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elf32-ppc.c revision 1.9
      1  1.1  christos /* PowerPC-specific support for 32-bit ELF
      2  1.9  christos    Copyright (C) 1994-2020 Free Software Foundation, Inc.
      3  1.1  christos    Written by Ian Lance Taylor, Cygnus Support.
      4  1.1  christos 
      5  1.1  christos    This file is part of BFD, the Binary File Descriptor library.
      6  1.1  christos 
      7  1.1  christos    This program is free software; you can redistribute it and/or modify
      8  1.1  christos    it under the terms of the GNU General Public License as published by
      9  1.1  christos    the Free Software Foundation; either version 3 of the License, or
     10  1.1  christos    (at your option) any later version.
     11  1.1  christos 
     12  1.1  christos    This program is distributed in the hope that it will be useful,
     13  1.1  christos    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  1.1  christos    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15  1.1  christos    GNU General Public License for more details.
     16  1.1  christos 
     17  1.1  christos    You should have received a copy of the GNU General Public License
     18  1.1  christos    along with this program; if not, write to the
     19  1.1  christos    Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
     20  1.1  christos    Boston, MA 02110-1301, USA.  */
     21  1.1  christos 
     22  1.1  christos 
     23  1.1  christos /* This file is based on a preliminary PowerPC ELF ABI.  The
     24  1.1  christos    information may not match the final PowerPC ELF ABI.  It includes
     25  1.1  christos    suggestions from the in-progress Embedded PowerPC ABI, and that
     26  1.1  christos    information may also not match.  */
     27  1.1  christos 
     28  1.1  christos #include "sysdep.h"
     29  1.1  christos #include <stdarg.h>
     30  1.1  christos #include "bfd.h"
     31  1.1  christos #include "bfdlink.h"
     32  1.1  christos #include "libbfd.h"
     33  1.1  christos #include "elf-bfd.h"
     34  1.1  christos #include "elf/ppc.h"
     35  1.1  christos #include "elf32-ppc.h"
     36  1.1  christos #include "elf-vxworks.h"
     37  1.1  christos #include "dwarf2.h"
     38  1.7  christos #include "opcode/ppc.h"
     39  1.1  christos 
     40  1.9  christos /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
     41  1.9  christos #define OCTETS_PER_BYTE(ABFD, SEC) 1
     42  1.9  christos 
     43  1.1  christos typedef enum split16_format_type
     44  1.1  christos {
     45  1.1  christos   split16a_type = 0,
     46  1.1  christos   split16d_type
     47  1.1  christos }
     48  1.1  christos split16_format_type;
     49  1.1  christos 
     50  1.1  christos /* RELA relocations are used here.  */
     51  1.1  christos 
     52  1.1  christos static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
     53  1.1  christos   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
     54  1.1  christos static bfd_reloc_status_type ppc_elf_unhandled_reloc
     55  1.1  christos   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
     56  1.1  christos 
     57  1.1  christos /* Branch prediction bit for branch taken relocs.  */
     58  1.1  christos #define BRANCH_PREDICT_BIT 0x200000
     59  1.1  christos /* Mask to set RA in memory instructions.  */
     60  1.1  christos #define RA_REGISTER_MASK 0x001f0000
     61  1.1  christos /* Value to shift register by to insert RA.  */
     62  1.1  christos #define RA_REGISTER_SHIFT 16
     63  1.1  christos 
     64  1.1  christos /* The name of the dynamic interpreter.  This is put in the .interp
     65  1.1  christos    section.  */
     66  1.1  christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
     67  1.1  christos 
     68  1.1  christos /* For old-style PLT.  */
     69  1.1  christos /* The number of single-slot PLT entries (the rest use two slots).  */
     70  1.1  christos #define PLT_NUM_SINGLE_ENTRIES 8192
     71  1.1  christos 
     72  1.1  christos /* For new-style .glink and .plt.  */
     73  1.1  christos #define GLINK_PLTRESOLVE 16*4
     74  1.7  christos #define GLINK_ENTRY_SIZE(htab, h)					\
     75  1.7  christos   ((4*4									\
     76  1.7  christos     + (h != NULL							\
     77  1.7  christos        && h == htab->tls_get_addr					\
     78  1.7  christos        && !htab->params->no_tls_get_addr_opt ? 8*4 : 0)			\
     79  1.7  christos     + (1u << htab->params->plt_stub_align) - 1)				\
     80  1.7  christos    & -(1u << htab->params->plt_stub_align))
     81  1.1  christos 
     82  1.1  christos /* VxWorks uses its own plt layout, filled in by the static linker.  */
     83  1.1  christos 
     84  1.1  christos /* The standard VxWorks PLT entry.  */
     85  1.1  christos #define VXWORKS_PLT_ENTRY_SIZE 32
     86  1.1  christos static const bfd_vma ppc_elf_vxworks_plt_entry
     87  1.1  christos     [VXWORKS_PLT_ENTRY_SIZE / 4] =
     88  1.1  christos   {
     89  1.7  christos     0x3d800000, /* lis	   r12,0		 */
     90  1.7  christos     0x818c0000, /* lwz	   r12,0(r12)		 */
     91  1.7  christos     0x7d8903a6, /* mtctr   r12			 */
     92  1.7  christos     0x4e800420, /* bctr				 */
     93  1.7  christos     0x39600000, /* li	   r11,0		 */
     94  1.7  christos     0x48000000, /* b	   14 <.PLT0resolve+0x4> */
     95  1.7  christos     0x60000000, /* nop				 */
     96  1.7  christos     0x60000000, /* nop				 */
     97  1.1  christos   };
     98  1.1  christos static const bfd_vma ppc_elf_vxworks_pic_plt_entry
     99  1.1  christos     [VXWORKS_PLT_ENTRY_SIZE / 4] =
    100  1.1  christos   {
    101  1.1  christos     0x3d9e0000, /* addis r12,r30,0 */
    102  1.1  christos     0x818c0000, /* lwz	 r12,0(r12) */
    103  1.1  christos     0x7d8903a6, /* mtctr r12 */
    104  1.1  christos     0x4e800420, /* bctr */
    105  1.1  christos     0x39600000, /* li	 r11,0 */
    106  1.1  christos     0x48000000, /* b	 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
    107  1.1  christos     0x60000000, /* nop */
    108  1.1  christos     0x60000000, /* nop */
    109  1.1  christos   };
    110  1.1  christos 
    111  1.1  christos /* The initial VxWorks PLT entry.  */
    112  1.1  christos #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
    113  1.1  christos static const bfd_vma ppc_elf_vxworks_plt0_entry
    114  1.1  christos     [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
    115  1.1  christos   {
    116  1.7  christos     0x3d800000, /* lis	   r12,0	*/
    117  1.7  christos     0x398c0000, /* addi	   r12,r12,0	*/
    118  1.7  christos     0x800c0008, /* lwz	   r0,8(r12)	*/
    119  1.7  christos     0x7c0903a6, /* mtctr   r0		*/
    120  1.7  christos     0x818c0004, /* lwz	   r12,4(r12)	*/
    121  1.7  christos     0x4e800420, /* bctr			*/
    122  1.7  christos     0x60000000, /* nop			*/
    123  1.7  christos     0x60000000, /* nop			*/
    124  1.1  christos   };
    125  1.1  christos static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
    126  1.1  christos     [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
    127  1.1  christos   {
    128  1.1  christos     0x819e0008, /* lwz	 r12,8(r30) */
    129  1.7  christos     0x7d8903a6, /* mtctr r12	    */
    130  1.1  christos     0x819e0004, /* lwz	 r12,4(r30) */
    131  1.7  christos     0x4e800420, /* bctr		    */
    132  1.7  christos     0x60000000, /* nop		    */
    133  1.7  christos     0x60000000, /* nop		    */
    134  1.7  christos     0x60000000, /* nop		    */
    135  1.7  christos     0x60000000, /* nop		    */
    136  1.1  christos   };
    137  1.1  christos 
    138  1.1  christos /* For executables, we have some additional relocations in
    139  1.1  christos    .rela.plt.unloaded, for the kernel loader.  */
    140  1.1  christos 
    141  1.1  christos /* The number of non-JMP_SLOT relocations per PLT0 slot. */
    142  1.1  christos #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
    143  1.1  christos /* The number of relocations in the PLTResolve slot. */
    144  1.1  christos #define VXWORKS_PLTRESOLVE_RELOCS 2
    145  1.7  christos /* The number of relocations in the PLTResolve slot when creating
    146  1.1  christos    a shared library. */
    147  1.1  christos #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
    148  1.1  christos 
    149  1.1  christos /* Some instructions.  */
    150  1.1  christos #define ADDIS_11_11	0x3d6b0000
    151  1.1  christos #define ADDIS_11_30	0x3d7e0000
    152  1.1  christos #define ADDIS_12_12	0x3d8c0000
    153  1.1  christos #define ADDI_11_11	0x396b0000
    154  1.1  christos #define ADD_0_11_11	0x7c0b5a14
    155  1.1  christos #define ADD_3_12_2	0x7c6c1214
    156  1.1  christos #define ADD_11_0_11	0x7d605a14
    157  1.1  christos #define B		0x48000000
    158  1.3  christos #define BA		0x48000002
    159  1.1  christos #define BCL_20_31	0x429f0005
    160  1.1  christos #define BCTR		0x4e800420
    161  1.1  christos #define BEQLR		0x4d820020
    162  1.1  christos #define CMPWI_11_0	0x2c0b0000
    163  1.1  christos #define LIS_11		0x3d600000
    164  1.1  christos #define LIS_12		0x3d800000
    165  1.1  christos #define LWZU_0_12	0x840c0000
    166  1.1  christos #define LWZ_0_12	0x800c0000
    167  1.1  christos #define LWZ_11_3	0x81630000
    168  1.1  christos #define LWZ_11_11	0x816b0000
    169  1.1  christos #define LWZ_11_30	0x817e0000
    170  1.1  christos #define LWZ_12_3	0x81830000
    171  1.1  christos #define LWZ_12_12	0x818c0000
    172  1.1  christos #define MR_0_3		0x7c601b78
    173  1.1  christos #define MR_3_0		0x7c030378
    174  1.1  christos #define MFLR_0		0x7c0802a6
    175  1.1  christos #define MFLR_12		0x7d8802a6
    176  1.1  christos #define MTCTR_0		0x7c0903a6
    177  1.1  christos #define MTCTR_11	0x7d6903a6
    178  1.1  christos #define MTLR_0		0x7c0803a6
    179  1.1  christos #define NOP		0x60000000
    180  1.1  christos #define SUB_11_11_12	0x7d6c5850
    181  1.1  christos 
    182  1.1  christos /* Offset of tp and dtp pointers from start of TLS block.  */
    183  1.1  christos #define TP_OFFSET	0x7000
    184  1.1  christos #define DTP_OFFSET	0x8000
    185  1.1  christos 
    186  1.1  christos /* The value of a defined global symbol.  */
    187  1.1  christos #define SYM_VAL(SYM) \
    188  1.1  christos   ((SYM)->root.u.def.section->output_section->vma	\
    189  1.1  christos    + (SYM)->root.u.def.section->output_offset		\
    190  1.1  christos    + (SYM)->root.u.def.value)
    191  1.1  christos 
    192  1.9  christos /* Relocation HOWTO's.  */
    194  1.9  christos /* Like other ELF RELA targets that don't apply multiple
    195  1.9  christos    field-altering relocations to the same localation, src_mask is
    196  1.9  christos    always zero and pcrel_offset is the same as pc_relative.
    197  1.9  christos    PowerPC can always use a zero bitpos, even when the field is not at
    198  1.9  christos    the LSB.  For example, a REL24 could use rightshift=2, bisize=24
    199  1.9  christos    and bitpos=2 which matches the ABI description, or as we do here,
    200  1.9  christos    rightshift=0, bitsize=26 and bitpos=0.  */
    201  1.9  christos #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \
    202  1.9  christos 	    complain, special_func)				\
    203  1.9  christos   HOWTO (type, rightshift, size, bitsize, pc_relative, 0,	\
    204  1.9  christos 	 complain_overflow_ ## complain, special_func,		\
    205  1.9  christos 	 #type, FALSE, 0, mask, pc_relative)
    206  1.1  christos 
    207  1.1  christos static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
    208  1.1  christos 
    209  1.1  christos static reloc_howto_type ppc_elf_howto_raw[] = {
    210  1.9  christos   /* This reloc does nothing.  */
    211  1.9  christos   HOW (R_PPC_NONE, 3, 0, 0, 0, FALSE, dont,
    212  1.1  christos        bfd_elf_generic_reloc),
    213  1.1  christos 
    214  1.9  christos   /* A standard 32 bit relocation.  */
    215  1.9  christos   HOW (R_PPC_ADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    216  1.1  christos        bfd_elf_generic_reloc),
    217  1.1  christos 
    218  1.1  christos   /* An absolute 26 bit branch; the lower two bits must be zero.
    219  1.9  christos      FIXME: we don't check that, we just clear them.  */
    220  1.9  christos   HOW (R_PPC_ADDR24, 2, 26, 0x3fffffc, 0, FALSE, signed,
    221  1.1  christos        bfd_elf_generic_reloc),
    222  1.1  christos 
    223  1.9  christos   /* A standard 16 bit relocation.  */
    224  1.9  christos   HOW (R_PPC_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
    225  1.1  christos        bfd_elf_generic_reloc),
    226  1.1  christos 
    227  1.9  christos   /* A 16 bit relocation without overflow.  */
    228  1.9  christos   HOW (R_PPC_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    229  1.1  christos        bfd_elf_generic_reloc),
    230  1.1  christos 
    231  1.9  christos   /* The high order 16 bits of an address.  */
    232  1.9  christos   HOW (R_PPC_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    233  1.1  christos        bfd_elf_generic_reloc),
    234  1.1  christos 
    235  1.1  christos   /* The high order 16 bits of an address, plus 1 if the contents of
    236  1.9  christos      the low 16 bits, treated as a signed number, is negative.  */
    237  1.9  christos   HOW (R_PPC_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    238  1.1  christos        ppc_elf_addr16_ha_reloc),
    239  1.1  christos 
    240  1.1  christos   /* An absolute 16 bit branch; the lower two bits must be zero.
    241  1.9  christos      FIXME: we don't check that, we just clear them.  */
    242  1.9  christos   HOW (R_PPC_ADDR14, 2, 16, 0xfffc, 0, FALSE, signed,
    243  1.1  christos        bfd_elf_generic_reloc),
    244  1.1  christos 
    245  1.1  christos   /* An absolute 16 bit branch, for which bit 10 should be set to
    246  1.1  christos      indicate that the branch is expected to be taken.	The lower two
    247  1.9  christos      bits must be zero.  */
    248  1.9  christos   HOW (R_PPC_ADDR14_BRTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
    249  1.1  christos        bfd_elf_generic_reloc),
    250  1.1  christos 
    251  1.1  christos   /* An absolute 16 bit branch, for which bit 10 should be set to
    252  1.1  christos      indicate that the branch is not expected to be taken.  The lower
    253  1.9  christos      two bits must be zero.  */
    254  1.9  christos   HOW (R_PPC_ADDR14_BRNTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
    255  1.1  christos        bfd_elf_generic_reloc),
    256  1.1  christos 
    257  1.9  christos   /* A relative 26 bit branch; the lower two bits must be zero.  */
    258  1.9  christos   HOW (R_PPC_REL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
    259  1.1  christos        bfd_elf_generic_reloc),
    260  1.1  christos 
    261  1.9  christos   /* A relative 16 bit branch; the lower two bits must be zero.  */
    262  1.9  christos   HOW (R_PPC_REL14, 2, 16, 0xfffc, 0, TRUE, signed,
    263  1.1  christos        bfd_elf_generic_reloc),
    264  1.1  christos 
    265  1.1  christos   /* A relative 16 bit branch.  Bit 10 should be set to indicate that
    266  1.1  christos      the branch is expected to be taken.  The lower two bits must be
    267  1.9  christos      zero.  */
    268  1.9  christos   HOW (R_PPC_REL14_BRTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
    269  1.1  christos        bfd_elf_generic_reloc),
    270  1.1  christos 
    271  1.1  christos   /* A relative 16 bit branch.  Bit 10 should be set to indicate that
    272  1.1  christos      the branch is not expected to be taken.  The lower two bits must
    273  1.9  christos      be zero.  */
    274  1.9  christos   HOW (R_PPC_REL14_BRNTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
    275  1.1  christos        bfd_elf_generic_reloc),
    276  1.1  christos 
    277  1.1  christos   /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
    278  1.9  christos      symbol.  */
    279  1.9  christos   HOW (R_PPC_GOT16, 1, 16, 0xffff, 0, FALSE, signed,
    280  1.1  christos        ppc_elf_unhandled_reloc),
    281  1.1  christos 
    282  1.1  christos   /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
    283  1.9  christos      the symbol.  */
    284  1.9  christos   HOW (R_PPC_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    285  1.1  christos        ppc_elf_unhandled_reloc),
    286  1.1  christos 
    287  1.1  christos   /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
    288  1.9  christos      the symbol.  */
    289  1.9  christos   HOW (R_PPC_GOT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    290  1.1  christos        ppc_elf_unhandled_reloc),
    291  1.1  christos 
    292  1.1  christos   /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
    293  1.9  christos      the symbol.  */
    294  1.9  christos   HOW (R_PPC_GOT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    295  1.1  christos        ppc_elf_unhandled_reloc),
    296  1.1  christos 
    297  1.1  christos   /* Like R_PPC_REL24, but referring to the procedure linkage table
    298  1.9  christos      entry for the symbol.  */
    299  1.9  christos   HOW (R_PPC_PLTREL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
    300  1.1  christos        ppc_elf_unhandled_reloc),
    301  1.1  christos 
    302  1.1  christos   /* This is used only by the dynamic linker.  The symbol should exist
    303  1.1  christos      both in the object being run and in some shared library.  The
    304  1.1  christos      dynamic linker copies the data addressed by the symbol from the
    305  1.1  christos      shared library into the object, because the object being
    306  1.9  christos      run has to have the data at some particular address.  */
    307  1.9  christos   HOW (R_PPC_COPY, 2, 32, 0, 0, FALSE, dont,
    308  1.1  christos        ppc_elf_unhandled_reloc),
    309  1.1  christos 
    310  1.1  christos   /* Like R_PPC_ADDR32, but used when setting global offset table
    311  1.9  christos      entries.  */
    312  1.9  christos   HOW (R_PPC_GLOB_DAT, 2, 32, 0xffffffff, 0, FALSE, dont,
    313  1.1  christos        ppc_elf_unhandled_reloc),
    314  1.1  christos 
    315  1.9  christos   /* Marks a procedure linkage table entry for a symbol.  */
    316  1.9  christos   HOW (R_PPC_JMP_SLOT, 2, 32, 0, 0, FALSE, dont,
    317  1.1  christos        ppc_elf_unhandled_reloc),
    318  1.1  christos 
    319  1.1  christos   /* Used only by the dynamic linker.  When the object is run, this
    320  1.1  christos      longword is set to the load address of the object, plus the
    321  1.9  christos      addend.  */
    322  1.9  christos   HOW (R_PPC_RELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
    323  1.1  christos        bfd_elf_generic_reloc),
    324  1.1  christos 
    325  1.1  christos   /* Like R_PPC_REL24, but uses the value of the symbol within the
    326  1.1  christos      object rather than the final value.  Normally used for
    327  1.9  christos      _GLOBAL_OFFSET_TABLE_.  */
    328  1.9  christos   HOW (R_PPC_LOCAL24PC, 2, 26, 0x3fffffc, 0, TRUE, signed,
    329  1.1  christos        bfd_elf_generic_reloc),
    330  1.1  christos 
    331  1.9  christos   /* Like R_PPC_ADDR32, but may be unaligned.  */
    332  1.9  christos   HOW (R_PPC_UADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    333  1.1  christos        bfd_elf_generic_reloc),
    334  1.1  christos 
    335  1.9  christos   /* Like R_PPC_ADDR16, but may be unaligned.  */
    336  1.9  christos   HOW (R_PPC_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
    337  1.1  christos        bfd_elf_generic_reloc),
    338  1.1  christos 
    339  1.9  christos   /* 32-bit PC relative */
    340  1.9  christos   HOW (R_PPC_REL32, 2, 32, 0xffffffff, 0, TRUE, dont,
    341  1.1  christos        bfd_elf_generic_reloc),
    342  1.1  christos 
    343  1.1  christos   /* 32-bit relocation to the symbol's procedure linkage table.
    344  1.9  christos      FIXME: not supported.  */
    345  1.9  christos   HOW (R_PPC_PLT32, 2, 32, 0, 0, FALSE, dont,
    346  1.1  christos        ppc_elf_unhandled_reloc),
    347  1.1  christos 
    348  1.1  christos   /* 32-bit PC relative relocation to the symbol's procedure linkage table.
    349  1.9  christos      FIXME: not supported.  */
    350  1.9  christos   HOW (R_PPC_PLTREL32, 2, 32, 0, 0, TRUE, dont,
    351  1.1  christos        ppc_elf_unhandled_reloc),
    352  1.1  christos 
    353  1.1  christos   /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
    354  1.9  christos      the symbol.  */
    355  1.9  christos   HOW (R_PPC_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    356  1.1  christos        ppc_elf_unhandled_reloc),
    357  1.1  christos 
    358  1.1  christos   /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
    359  1.9  christos      the symbol.  */
    360  1.9  christos   HOW (R_PPC_PLT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    361  1.1  christos        ppc_elf_unhandled_reloc),
    362  1.1  christos 
    363  1.1  christos   /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
    364  1.9  christos      the symbol.  */
    365  1.9  christos   HOW (R_PPC_PLT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    366  1.1  christos        ppc_elf_unhandled_reloc),
    367  1.1  christos 
    368  1.1  christos   /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
    369  1.9  christos      small data items.  */
    370  1.9  christos   HOW (R_PPC_SDAREL16, 1, 16, 0xffff, 0, FALSE, signed,
    371  1.1  christos        ppc_elf_unhandled_reloc),
    372  1.1  christos 
    373  1.9  christos   /* 16-bit section relative relocation.  */
    374  1.9  christos   HOW (R_PPC_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed,
    375  1.1  christos        ppc_elf_unhandled_reloc),
    376  1.1  christos 
    377  1.9  christos   /* 16-bit lower half section relative relocation.  */
    378  1.9  christos   HOW (R_PPC_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont,
    379  1.1  christos        ppc_elf_unhandled_reloc),
    380  1.1  christos 
    381  1.9  christos   /* 16-bit upper half section relative relocation.  */
    382  1.9  christos   HOW (R_PPC_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, dont,
    383  1.1  christos        ppc_elf_unhandled_reloc),
    384  1.1  christos 
    385  1.9  christos   /* 16-bit upper half adjusted section relative relocation.  */
    386  1.9  christos   HOW (R_PPC_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, dont,
    387  1.1  christos        ppc_elf_unhandled_reloc),
    388  1.1  christos 
    389  1.9  christos   /* Marker relocs for TLS.  */
    390  1.9  christos   HOW (R_PPC_TLS, 2, 32, 0, 0, FALSE, dont,
    391  1.9  christos        bfd_elf_generic_reloc),
    392  1.9  christos 
    393  1.9  christos   HOW (R_PPC_TLSGD, 2, 32, 0, 0, FALSE, dont,
    394  1.9  christos        bfd_elf_generic_reloc),
    395  1.9  christos 
    396  1.9  christos   HOW (R_PPC_TLSLD, 2, 32, 0, 0, FALSE, dont,
    397  1.1  christos        bfd_elf_generic_reloc),
    398  1.7  christos 
    399  1.9  christos   /* Marker relocs on inline plt call instructions.  */
    400  1.9  christos   HOW (R_PPC_PLTSEQ, 2, 32, 0, 0, FALSE, dont,
    401  1.9  christos        bfd_elf_generic_reloc),
    402  1.9  christos 
    403  1.9  christos   HOW (R_PPC_PLTCALL, 2, 32, 0, 0, FALSE, dont,
    404  1.7  christos        bfd_elf_generic_reloc),
    405  1.1  christos 
    406  1.1  christos   /* Computes the load module index of the load module that contains the
    407  1.9  christos      definition of its TLS sym.  */
    408  1.9  christos   HOW (R_PPC_DTPMOD32, 2, 32, 0xffffffff, 0, FALSE, dont,
    409  1.1  christos        ppc_elf_unhandled_reloc),
    410  1.1  christos 
    411  1.1  christos   /* Computes a dtv-relative displacement, the difference between the value
    412  1.1  christos      of sym+add and the base address of the thread-local storage block that
    413  1.9  christos      contains the definition of sym, minus 0x8000.  */
    414  1.9  christos   HOW (R_PPC_DTPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
    415  1.1  christos        ppc_elf_unhandled_reloc),
    416  1.1  christos 
    417  1.9  christos   /* A 16 bit dtprel reloc.  */
    418  1.9  christos   HOW (R_PPC_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    419  1.1  christos        ppc_elf_unhandled_reloc),
    420  1.1  christos 
    421  1.9  christos   /* Like DTPREL16, but no overflow.  */
    422  1.9  christos   HOW (R_PPC_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    423  1.1  christos        ppc_elf_unhandled_reloc),
    424  1.1  christos 
    425  1.9  christos   /* Like DTPREL16_LO, but next higher group of 16 bits.  */
    426  1.9  christos   HOW (R_PPC_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    427  1.1  christos        ppc_elf_unhandled_reloc),
    428  1.1  christos 
    429  1.9  christos   /* Like DTPREL16_HI, but adjust for low 16 bits.  */
    430  1.9  christos   HOW (R_PPC_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    431  1.1  christos        ppc_elf_unhandled_reloc),
    432  1.1  christos 
    433  1.1  christos   /* Computes a tp-relative displacement, the difference between the value of
    434  1.9  christos      sym+add and the value of the thread pointer (r13).  */
    435  1.9  christos   HOW (R_PPC_TPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
    436  1.1  christos        ppc_elf_unhandled_reloc),
    437  1.1  christos 
    438  1.9  christos   /* A 16 bit tprel reloc.  */
    439  1.9  christos   HOW (R_PPC_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    440  1.1  christos        ppc_elf_unhandled_reloc),
    441  1.1  christos 
    442  1.9  christos   /* Like TPREL16, but no overflow.  */
    443  1.9  christos   HOW (R_PPC_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    444  1.1  christos        ppc_elf_unhandled_reloc),
    445  1.1  christos 
    446  1.9  christos   /* Like TPREL16_LO, but next higher group of 16 bits.  */
    447  1.9  christos   HOW (R_PPC_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    448  1.1  christos        ppc_elf_unhandled_reloc),
    449  1.1  christos 
    450  1.9  christos   /* Like TPREL16_HI, but adjust for low 16 bits.  */
    451  1.9  christos   HOW (R_PPC_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    452  1.1  christos        ppc_elf_unhandled_reloc),
    453  1.1  christos 
    454  1.1  christos   /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
    455  1.1  christos      with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
    456  1.9  christos      to the first entry.  */
    457  1.9  christos   HOW (R_PPC_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed,
    458  1.1  christos        ppc_elf_unhandled_reloc),
    459  1.1  christos 
    460  1.9  christos   /* Like GOT_TLSGD16, but no overflow.  */
    461  1.9  christos   HOW (R_PPC_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    462  1.1  christos        ppc_elf_unhandled_reloc),
    463  1.1  christos 
    464  1.9  christos   /* Like GOT_TLSGD16_LO, but next higher group of 16 bits.  */
    465  1.9  christos   HOW (R_PPC_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    466  1.1  christos        ppc_elf_unhandled_reloc),
    467  1.1  christos 
    468  1.9  christos   /* Like GOT_TLSGD16_HI, but adjust for low 16 bits.  */
    469  1.9  christos   HOW (R_PPC_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    470  1.1  christos        ppc_elf_unhandled_reloc),
    471  1.1  christos 
    472  1.1  christos   /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
    473  1.1  christos      with values (sym+add)@dtpmod and zero, and computes the offset to the
    474  1.9  christos      first entry.  */
    475  1.9  christos   HOW (R_PPC_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed,
    476  1.1  christos        ppc_elf_unhandled_reloc),
    477  1.1  christos 
    478  1.9  christos   /* Like GOT_TLSLD16, but no overflow.  */
    479  1.9  christos   HOW (R_PPC_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    480  1.1  christos        ppc_elf_unhandled_reloc),
    481  1.1  christos 
    482  1.9  christos   /* Like GOT_TLSLD16_LO, but next higher group of 16 bits.  */
    483  1.9  christos   HOW (R_PPC_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    484  1.1  christos        ppc_elf_unhandled_reloc),
    485  1.1  christos 
    486  1.9  christos   /* Like GOT_TLSLD16_HI, but adjust for low 16 bits.  */
    487  1.9  christos   HOW (R_PPC_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    488  1.1  christos        ppc_elf_unhandled_reloc),
    489  1.1  christos 
    490  1.1  christos   /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
    491  1.9  christos      the offset to the entry.  */
    492  1.9  christos   HOW (R_PPC_GOT_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    493  1.1  christos        ppc_elf_unhandled_reloc),
    494  1.1  christos 
    495  1.9  christos   /* Like GOT_DTPREL16, but no overflow.  */
    496  1.9  christos   HOW (R_PPC_GOT_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    497  1.1  christos        ppc_elf_unhandled_reloc),
    498  1.1  christos 
    499  1.9  christos   /* Like GOT_DTPREL16_LO, but next higher group of 16 bits.  */
    500  1.9  christos   HOW (R_PPC_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    501  1.1  christos        ppc_elf_unhandled_reloc),
    502  1.1  christos 
    503  1.9  christos   /* Like GOT_DTPREL16_HI, but adjust for low 16 bits.  */
    504  1.9  christos   HOW (R_PPC_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    505  1.1  christos        ppc_elf_unhandled_reloc),
    506  1.1  christos 
    507  1.1  christos   /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
    508  1.9  christos      offset to the entry.  */
    509  1.9  christos   HOW (R_PPC_GOT_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    510  1.1  christos        ppc_elf_unhandled_reloc),
    511  1.1  christos 
    512  1.9  christos   /* Like GOT_TPREL16, but no overflow.  */
    513  1.9  christos   HOW (R_PPC_GOT_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    514  1.1  christos        ppc_elf_unhandled_reloc),
    515  1.1  christos 
    516  1.9  christos   /* Like GOT_TPREL16_LO, but next higher group of 16 bits.  */
    517  1.9  christos   HOW (R_PPC_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    518  1.1  christos        ppc_elf_unhandled_reloc),
    519  1.1  christos 
    520  1.9  christos   /* Like GOT_TPREL16_HI, but adjust for low 16 bits.  */
    521  1.9  christos   HOW (R_PPC_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    522  1.1  christos        ppc_elf_unhandled_reloc),
    523  1.1  christos 
    524  1.1  christos   /* The remaining relocs are from the Embedded ELF ABI, and are not
    525  1.1  christos      in the SVR4 ELF ABI.  */
    526  1.1  christos 
    527  1.9  christos   /* 32 bit value resulting from the addend minus the symbol.  */
    528  1.9  christos   HOW (R_PPC_EMB_NADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    529  1.1  christos        ppc_elf_unhandled_reloc),
    530  1.1  christos 
    531  1.9  christos   /* 16 bit value resulting from the addend minus the symbol.  */
    532  1.9  christos   HOW (R_PPC_EMB_NADDR16, 1, 16, 0xffff, 0, FALSE, signed,
    533  1.1  christos        ppc_elf_unhandled_reloc),
    534  1.1  christos 
    535  1.9  christos   /* 16 bit value resulting from the addend minus the symbol.  */
    536  1.9  christos   HOW (R_PPC_EMB_NADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    537  1.1  christos        ppc_elf_unhandled_reloc),
    538  1.1  christos 
    539  1.9  christos   /* The high order 16 bits of the addend minus the symbol.  */
    540  1.9  christos   HOW (R_PPC_EMB_NADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    541  1.1  christos        ppc_elf_unhandled_reloc),
    542  1.1  christos 
    543  1.1  christos   /* The high order 16 bits of the result of the addend minus the address,
    544  1.1  christos      plus 1 if the contents of the low 16 bits, treated as a signed number,
    545  1.9  christos      is negative.  */
    546  1.9  christos   HOW (R_PPC_EMB_NADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    547  1.1  christos        ppc_elf_unhandled_reloc),
    548  1.1  christos 
    549  1.1  christos   /* 16 bit value resulting from allocating a 4 byte word to hold an
    550  1.1  christos      address in the .sdata section, and returning the offset from
    551  1.9  christos      _SDA_BASE_ for that relocation.  */
    552  1.9  christos   HOW (R_PPC_EMB_SDAI16, 1, 16, 0xffff, 0, FALSE, signed,
    553  1.1  christos        ppc_elf_unhandled_reloc),
    554  1.1  christos 
    555  1.1  christos   /* 16 bit value resulting from allocating a 4 byte word to hold an
    556  1.1  christos      address in the .sdata2 section, and returning the offset from
    557  1.9  christos      _SDA2_BASE_ for that relocation.  */
    558  1.9  christos   HOW (R_PPC_EMB_SDA2I16, 1, 16, 0xffff, 0, FALSE, signed,
    559  1.1  christos        ppc_elf_unhandled_reloc),
    560  1.1  christos 
    561  1.1  christos   /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
    562  1.9  christos      small data items.	 */
    563  1.9  christos   HOW (R_PPC_EMB_SDA2REL, 1, 16, 0xffff, 0, FALSE, signed,
    564  1.1  christos        ppc_elf_unhandled_reloc),
    565  1.1  christos 
    566  1.1  christos   /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
    567  1.1  christos      signed offset from the appropriate base, and filling in the register
    568  1.9  christos      field with the appropriate register (0, 2, or 13).  */
    569  1.9  christos   HOW (R_PPC_EMB_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
    570  1.1  christos        ppc_elf_unhandled_reloc),
    571  1.1  christos 
    572  1.1  christos   /* Relocation not handled: R_PPC_EMB_MRKREF */
    573  1.1  christos   /* Relocation not handled: R_PPC_EMB_RELSEC16 */
    574  1.1  christos   /* Relocation not handled: R_PPC_EMB_RELST_LO */
    575  1.1  christos   /* Relocation not handled: R_PPC_EMB_RELST_HI */
    576  1.1  christos   /* Relocation not handled: R_PPC_EMB_RELST_HA */
    577  1.1  christos   /* Relocation not handled: R_PPC_EMB_BIT_FLD */
    578  1.1  christos 
    579  1.1  christos   /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
    580  1.1  christos      in the 16 bit signed offset from the appropriate base, and filling in the
    581  1.9  christos      register field with the appropriate register (0, 2, or 13).  */
    582  1.9  christos   HOW (R_PPC_EMB_RELSDA, 1, 16, 0xffff, 0, FALSE, signed,
    583  1.1  christos        ppc_elf_unhandled_reloc),
    584  1.1  christos 
    585  1.9  christos   /* A relative 8 bit branch.  */
    586  1.9  christos   HOW (R_PPC_VLE_REL8, 1, 8, 0xff, 1, TRUE, signed,
    587  1.3  christos        bfd_elf_generic_reloc),
    588  1.1  christos 
    589  1.9  christos   /* A relative 15 bit branch.  */
    590  1.9  christos   HOW (R_PPC_VLE_REL15, 2, 16, 0xfffe, 0, TRUE, signed,
    591  1.1  christos        bfd_elf_generic_reloc),
    592  1.3  christos 
    593  1.9  christos   /* A relative 24 bit branch.  */
    594  1.9  christos   HOW (R_PPC_VLE_REL24, 2, 25, 0x1fffffe, 0, TRUE, signed,
    595  1.1  christos        bfd_elf_generic_reloc),
    596  1.1  christos 
    597  1.9  christos   /* The 16 LSBS in split16a format.  */
    598  1.9  christos   HOW (R_PPC_VLE_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
    599  1.1  christos        ppc_elf_unhandled_reloc),
    600  1.1  christos 
    601  1.9  christos   /* The 16 LSBS in split16d format.  */
    602  1.9  christos   HOW (R_PPC_VLE_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
    603  1.1  christos        ppc_elf_unhandled_reloc),
    604  1.1  christos 
    605  1.9  christos   /* Bits 16-31 split16a format.  */
    606  1.9  christos   HOW (R_PPC_VLE_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    607  1.1  christos        ppc_elf_unhandled_reloc),
    608  1.1  christos 
    609  1.9  christos   /* Bits 16-31 split16d format.  */
    610  1.9  christos   HOW (R_PPC_VLE_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    611  1.1  christos        ppc_elf_unhandled_reloc),
    612  1.1  christos 
    613  1.9  christos   /* Bits 16-31 (High Adjusted) in split16a format.  */
    614  1.9  christos   HOW (R_PPC_VLE_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    615  1.1  christos        ppc_elf_unhandled_reloc),
    616  1.1  christos 
    617  1.9  christos   /* Bits 16-31 (High Adjusted) in split16d format.  */
    618  1.9  christos   HOW (R_PPC_VLE_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    619  1.1  christos        ppc_elf_unhandled_reloc),
    620  1.3  christos 
    621  1.3  christos   /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
    622  1.3  christos      instructions.  If the register base is 0 then the linker changes
    623  1.9  christos      the e_add16i to an e_li instruction.  */
    624  1.9  christos   HOW (R_PPC_VLE_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
    625  1.1  christos        ppc_elf_unhandled_reloc),
    626  1.3  christos 
    627  1.9  christos   /* Like R_PPC_VLE_SDA21 but ignore overflow.  */
    628  1.9  christos   HOW (R_PPC_VLE_SDA21_LO, 2, 16, 0xffff, 0, FALSE, dont,
    629  1.1  christos        ppc_elf_unhandled_reloc),
    630  1.1  christos 
    631  1.9  christos   /* The 16 LSBS relative to _SDA_BASE_ in split16a format.  */
    632  1.9  christos   HOW (R_PPC_VLE_SDAREL_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
    633  1.1  christos        ppc_elf_unhandled_reloc),
    634  1.1  christos 
    635  1.9  christos   /* The 16 LSBS relative to _SDA_BASE_ in split16d format.  */
    636  1.9  christos   HOW (R_PPC_VLE_SDAREL_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
    637  1.1  christos        ppc_elf_unhandled_reloc),
    638  1.1  christos 
    639  1.9  christos   /* Bits 16-31 relative to _SDA_BASE_ in split16a format.  */
    640  1.9  christos   HOW (R_PPC_VLE_SDAREL_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    641  1.1  christos        ppc_elf_unhandled_reloc),
    642  1.1  christos 
    643  1.9  christos   /* Bits 16-31 relative to _SDA_BASE_ in split16d format.  */
    644  1.9  christos   HOW (R_PPC_VLE_SDAREL_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    645  1.1  christos        ppc_elf_unhandled_reloc),
    646  1.1  christos 
    647  1.9  christos   /* Bits 16-31 (HA) relative to _SDA_BASE split16a format.  */
    648  1.9  christos   HOW (R_PPC_VLE_SDAREL_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    649  1.1  christos        ppc_elf_unhandled_reloc),
    650  1.1  christos 
    651  1.9  christos   /* Bits 16-31 (HA) relative to _SDA_BASE split16d format.  */
    652  1.9  christos   HOW (R_PPC_VLE_SDAREL_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    653  1.7  christos        ppc_elf_unhandled_reloc),
    654  1.7  christos 
    655  1.9  christos   /* e_li split20 format.  */
    656  1.9  christos   HOW (R_PPC_VLE_ADDR20, 2, 20, 0x1f7fff, 0, FALSE, dont,
    657  1.9  christos        ppc_elf_unhandled_reloc),
    658  1.9  christos 
    659  1.9  christos   HOW (R_PPC_IRELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
    660  1.1  christos        ppc_elf_unhandled_reloc),
    661  1.1  christos 
    662  1.9  christos   /* A 16 bit relative relocation.  */
    663  1.9  christos   HOW (R_PPC_REL16, 1, 16, 0xffff, 0, TRUE, signed,
    664  1.1  christos        bfd_elf_generic_reloc),
    665  1.1  christos 
    666  1.9  christos   /* A 16 bit relative relocation without overflow.  */
    667  1.9  christos   HOW (R_PPC_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont,
    668  1.1  christos        bfd_elf_generic_reloc),
    669  1.1  christos 
    670  1.9  christos   /* The high order 16 bits of a relative address.  */
    671  1.9  christos   HOW (R_PPC_REL16_HI, 1, 16, 0xffff, 16, TRUE, dont,
    672  1.1  christos        bfd_elf_generic_reloc),
    673  1.1  christos 
    674  1.1  christos   /* The high order 16 bits of a relative address, plus 1 if the contents of
    675  1.9  christos      the low 16 bits, treated as a signed number, is negative.  */
    676  1.9  christos   HOW (R_PPC_REL16_HA, 1, 16, 0xffff, 16, TRUE, dont,
    677  1.1  christos        ppc_elf_addr16_ha_reloc),
    678  1.3  christos 
    679  1.9  christos   /* Like R_PPC_REL16_HA but for split field in addpcis.  */
    680  1.9  christos   HOW (R_PPC_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed,
    681  1.3  christos        ppc_elf_addr16_ha_reloc),
    682  1.7  christos 
    683  1.9  christos   /* A split-field reloc for addpcis, non-relative (gas internal use only).  */
    684  1.9  christos   HOW (R_PPC_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed,
    685  1.7  christos        ppc_elf_addr16_ha_reloc),
    686  1.1  christos 
    687  1.9  christos   /* GNU extension to record C++ vtable hierarchy.  */
    688  1.9  christos   HOW (R_PPC_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont,
    689  1.1  christos        NULL),
    690  1.1  christos 
    691  1.9  christos   /* GNU extension to record C++ vtable member usage.  */
    692  1.9  christos   HOW (R_PPC_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont,
    693  1.1  christos        NULL),
    694  1.1  christos 
    695  1.9  christos   /* Phony reloc to handle AIX style TOC entries.  */
    696  1.9  christos   HOW (R_PPC_TOC16, 1, 16, 0xffff, 0, FALSE, signed,
    697  1.1  christos        ppc_elf_unhandled_reloc),
    698  1.1  christos };
    699  1.1  christos 
    700  1.1  christos /* Initialize the ppc_elf_howto_table, so that linear accesses can be done.  */
    702  1.1  christos 
    703  1.1  christos static void
    704  1.1  christos ppc_elf_howto_init (void)
    705  1.1  christos {
    706  1.1  christos   unsigned int i, type;
    707  1.1  christos 
    708  1.1  christos   for (i = 0;
    709  1.1  christos        i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
    710  1.1  christos        i++)
    711  1.1  christos     {
    712  1.1  christos       type = ppc_elf_howto_raw[i].type;
    713  1.1  christos       if (type >= (sizeof (ppc_elf_howto_table)
    714  1.1  christos 		   / sizeof (ppc_elf_howto_table[0])))
    715  1.1  christos 	abort ();
    716  1.1  christos       ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
    717  1.1  christos     }
    718  1.1  christos }
    719  1.1  christos 
    720  1.1  christos static reloc_howto_type *
    721  1.1  christos ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    722  1.1  christos 			   bfd_reloc_code_real_type code)
    723  1.1  christos {
    724  1.1  christos   enum elf_ppc_reloc_type r;
    725  1.1  christos 
    726  1.1  christos   /* Initialize howto table if not already done.  */
    727  1.1  christos   if (!ppc_elf_howto_table[R_PPC_ADDR32])
    728  1.1  christos     ppc_elf_howto_init ();
    729  1.1  christos 
    730  1.1  christos   switch (code)
    731  1.1  christos     {
    732  1.1  christos     default:
    733  1.1  christos       return NULL;
    734  1.1  christos 
    735  1.1  christos     case BFD_RELOC_NONE:		r = R_PPC_NONE;			break;
    736  1.1  christos     case BFD_RELOC_32:			r = R_PPC_ADDR32;		break;
    737  1.1  christos     case BFD_RELOC_PPC_BA26:		r = R_PPC_ADDR24;		break;
    738  1.1  christos     case BFD_RELOC_PPC64_ADDR16_DS:
    739  1.1  christos     case BFD_RELOC_16:			r = R_PPC_ADDR16;		break;
    740  1.1  christos     case BFD_RELOC_PPC64_ADDR16_LO_DS:
    741  1.1  christos     case BFD_RELOC_LO16:		r = R_PPC_ADDR16_LO;		break;
    742  1.1  christos     case BFD_RELOC_HI16:		r = R_PPC_ADDR16_HI;		break;
    743  1.1  christos     case BFD_RELOC_HI16_S:		r = R_PPC_ADDR16_HA;		break;
    744  1.1  christos     case BFD_RELOC_PPC_BA16:		r = R_PPC_ADDR14;		break;
    745  1.1  christos     case BFD_RELOC_PPC_BA16_BRTAKEN:	r = R_PPC_ADDR14_BRTAKEN;	break;
    746  1.1  christos     case BFD_RELOC_PPC_BA16_BRNTAKEN:	r = R_PPC_ADDR14_BRNTAKEN;	break;
    747  1.1  christos     case BFD_RELOC_PPC_B26:		r = R_PPC_REL24;		break;
    748  1.1  christos     case BFD_RELOC_PPC_B16:		r = R_PPC_REL14;		break;
    749  1.1  christos     case BFD_RELOC_PPC_B16_BRTAKEN:	r = R_PPC_REL14_BRTAKEN;	break;
    750  1.1  christos     case BFD_RELOC_PPC_B16_BRNTAKEN:	r = R_PPC_REL14_BRNTAKEN;	break;
    751  1.1  christos     case BFD_RELOC_PPC64_GOT16_DS:
    752  1.1  christos     case BFD_RELOC_16_GOTOFF:		r = R_PPC_GOT16;		break;
    753  1.1  christos     case BFD_RELOC_PPC64_GOT16_LO_DS:
    754  1.1  christos     case BFD_RELOC_LO16_GOTOFF:		r = R_PPC_GOT16_LO;		break;
    755  1.1  christos     case BFD_RELOC_HI16_GOTOFF:		r = R_PPC_GOT16_HI;		break;
    756  1.1  christos     case BFD_RELOC_HI16_S_GOTOFF:	r = R_PPC_GOT16_HA;		break;
    757  1.1  christos     case BFD_RELOC_24_PLT_PCREL:	r = R_PPC_PLTREL24;		break;
    758  1.1  christos     case BFD_RELOC_PPC_COPY:		r = R_PPC_COPY;			break;
    759  1.1  christos     case BFD_RELOC_PPC_GLOB_DAT:	r = R_PPC_GLOB_DAT;		break;
    760  1.1  christos     case BFD_RELOC_PPC_LOCAL24PC:	r = R_PPC_LOCAL24PC;		break;
    761  1.1  christos     case BFD_RELOC_32_PCREL:		r = R_PPC_REL32;		break;
    762  1.1  christos     case BFD_RELOC_32_PLTOFF:		r = R_PPC_PLT32;		break;
    763  1.1  christos     case BFD_RELOC_32_PLT_PCREL:	r = R_PPC_PLTREL32;		break;
    764  1.1  christos     case BFD_RELOC_PPC64_PLT16_LO_DS:
    765  1.1  christos     case BFD_RELOC_LO16_PLTOFF:		r = R_PPC_PLT16_LO;		break;
    766  1.1  christos     case BFD_RELOC_HI16_PLTOFF:		r = R_PPC_PLT16_HI;		break;
    767  1.1  christos     case BFD_RELOC_HI16_S_PLTOFF:	r = R_PPC_PLT16_HA;		break;
    768  1.1  christos     case BFD_RELOC_GPREL16:		r = R_PPC_SDAREL16;		break;
    769  1.1  christos     case BFD_RELOC_PPC64_SECTOFF_DS:
    770  1.1  christos     case BFD_RELOC_16_BASEREL:		r = R_PPC_SECTOFF;		break;
    771  1.1  christos     case BFD_RELOC_PPC64_SECTOFF_LO_DS:
    772  1.1  christos     case BFD_RELOC_LO16_BASEREL:	r = R_PPC_SECTOFF_LO;		break;
    773  1.1  christos     case BFD_RELOC_HI16_BASEREL:	r = R_PPC_SECTOFF_HI;		break;
    774  1.1  christos     case BFD_RELOC_HI16_S_BASEREL:	r = R_PPC_SECTOFF_HA;		break;
    775  1.1  christos     case BFD_RELOC_CTOR:		r = R_PPC_ADDR32;		break;
    776  1.1  christos     case BFD_RELOC_PPC64_TOC16_DS:
    777  1.1  christos     case BFD_RELOC_PPC_TOC16:		r = R_PPC_TOC16;		break;
    778  1.1  christos     case BFD_RELOC_PPC_TLS:		r = R_PPC_TLS;			break;
    779  1.1  christos     case BFD_RELOC_PPC_TLSGD:		r = R_PPC_TLSGD;		break;
    780  1.1  christos     case BFD_RELOC_PPC_TLSLD:		r = R_PPC_TLSLD;		break;
    781  1.1  christos     case BFD_RELOC_PPC_DTPMOD:		r = R_PPC_DTPMOD32;		break;
    782  1.1  christos     case BFD_RELOC_PPC64_TPREL16_DS:
    783  1.1  christos     case BFD_RELOC_PPC_TPREL16:		r = R_PPC_TPREL16;		break;
    784  1.1  christos     case BFD_RELOC_PPC64_TPREL16_LO_DS:
    785  1.1  christos     case BFD_RELOC_PPC_TPREL16_LO:	r = R_PPC_TPREL16_LO;		break;
    786  1.1  christos     case BFD_RELOC_PPC_TPREL16_HI:	r = R_PPC_TPREL16_HI;		break;
    787  1.1  christos     case BFD_RELOC_PPC_TPREL16_HA:	r = R_PPC_TPREL16_HA;		break;
    788  1.1  christos     case BFD_RELOC_PPC_TPREL:		r = R_PPC_TPREL32;		break;
    789  1.1  christos     case BFD_RELOC_PPC64_DTPREL16_DS:
    790  1.1  christos     case BFD_RELOC_PPC_DTPREL16:	r = R_PPC_DTPREL16;		break;
    791  1.1  christos     case BFD_RELOC_PPC64_DTPREL16_LO_DS:
    792  1.1  christos     case BFD_RELOC_PPC_DTPREL16_LO:	r = R_PPC_DTPREL16_LO;		break;
    793  1.1  christos     case BFD_RELOC_PPC_DTPREL16_HI:	r = R_PPC_DTPREL16_HI;		break;
    794  1.1  christos     case BFD_RELOC_PPC_DTPREL16_HA:	r = R_PPC_DTPREL16_HA;		break;
    795  1.1  christos     case BFD_RELOC_PPC_DTPREL:		r = R_PPC_DTPREL32;		break;
    796  1.1  christos     case BFD_RELOC_PPC_GOT_TLSGD16:	r = R_PPC_GOT_TLSGD16;		break;
    797  1.1  christos     case BFD_RELOC_PPC_GOT_TLSGD16_LO:	r = R_PPC_GOT_TLSGD16_LO;	break;
    798  1.1  christos     case BFD_RELOC_PPC_GOT_TLSGD16_HI:	r = R_PPC_GOT_TLSGD16_HI;	break;
    799  1.1  christos     case BFD_RELOC_PPC_GOT_TLSGD16_HA:	r = R_PPC_GOT_TLSGD16_HA;	break;
    800  1.1  christos     case BFD_RELOC_PPC_GOT_TLSLD16:	r = R_PPC_GOT_TLSLD16;		break;
    801  1.1  christos     case BFD_RELOC_PPC_GOT_TLSLD16_LO:	r = R_PPC_GOT_TLSLD16_LO;	break;
    802  1.1  christos     case BFD_RELOC_PPC_GOT_TLSLD16_HI:	r = R_PPC_GOT_TLSLD16_HI;	break;
    803  1.1  christos     case BFD_RELOC_PPC_GOT_TLSLD16_HA:	r = R_PPC_GOT_TLSLD16_HA;	break;
    804  1.1  christos     case BFD_RELOC_PPC_GOT_TPREL16:	r = R_PPC_GOT_TPREL16;		break;
    805  1.1  christos     case BFD_RELOC_PPC_GOT_TPREL16_LO:	r = R_PPC_GOT_TPREL16_LO;	break;
    806  1.1  christos     case BFD_RELOC_PPC_GOT_TPREL16_HI:	r = R_PPC_GOT_TPREL16_HI;	break;
    807  1.1  christos     case BFD_RELOC_PPC_GOT_TPREL16_HA:	r = R_PPC_GOT_TPREL16_HA;	break;
    808  1.1  christos     case BFD_RELOC_PPC_GOT_DTPREL16:	r = R_PPC_GOT_DTPREL16;		break;
    809  1.1  christos     case BFD_RELOC_PPC_GOT_DTPREL16_LO:	r = R_PPC_GOT_DTPREL16_LO;	break;
    810  1.1  christos     case BFD_RELOC_PPC_GOT_DTPREL16_HI:	r = R_PPC_GOT_DTPREL16_HI;	break;
    811  1.1  christos     case BFD_RELOC_PPC_GOT_DTPREL16_HA:	r = R_PPC_GOT_DTPREL16_HA;	break;
    812  1.1  christos     case BFD_RELOC_PPC_EMB_NADDR32:	r = R_PPC_EMB_NADDR32;		break;
    813  1.1  christos     case BFD_RELOC_PPC_EMB_NADDR16:	r = R_PPC_EMB_NADDR16;		break;
    814  1.1  christos     case BFD_RELOC_PPC_EMB_NADDR16_LO:	r = R_PPC_EMB_NADDR16_LO;	break;
    815  1.1  christos     case BFD_RELOC_PPC_EMB_NADDR16_HI:	r = R_PPC_EMB_NADDR16_HI;	break;
    816  1.1  christos     case BFD_RELOC_PPC_EMB_NADDR16_HA:	r = R_PPC_EMB_NADDR16_HA;	break;
    817  1.1  christos     case BFD_RELOC_PPC_EMB_SDAI16:	r = R_PPC_EMB_SDAI16;		break;
    818  1.1  christos     case BFD_RELOC_PPC_EMB_SDA2I16:	r = R_PPC_EMB_SDA2I16;		break;
    819  1.1  christos     case BFD_RELOC_PPC_EMB_SDA2REL:	r = R_PPC_EMB_SDA2REL;		break;
    820  1.1  christos     case BFD_RELOC_PPC_EMB_SDA21:	r = R_PPC_EMB_SDA21;		break;
    821  1.1  christos     case BFD_RELOC_PPC_EMB_MRKREF:	r = R_PPC_EMB_MRKREF;		break;
    822  1.1  christos     case BFD_RELOC_PPC_EMB_RELSEC16:	r = R_PPC_EMB_RELSEC16;		break;
    823  1.1  christos     case BFD_RELOC_PPC_EMB_RELST_LO:	r = R_PPC_EMB_RELST_LO;		break;
    824  1.1  christos     case BFD_RELOC_PPC_EMB_RELST_HI:	r = R_PPC_EMB_RELST_HI;		break;
    825  1.1  christos     case BFD_RELOC_PPC_EMB_RELST_HA:	r = R_PPC_EMB_RELST_HA;		break;
    826  1.1  christos     case BFD_RELOC_PPC_EMB_BIT_FLD:	r = R_PPC_EMB_BIT_FLD;		break;
    827  1.1  christos     case BFD_RELOC_PPC_EMB_RELSDA:	r = R_PPC_EMB_RELSDA;		break;
    828  1.1  christos     case BFD_RELOC_PPC_VLE_REL8:	r = R_PPC_VLE_REL8;		break;
    829  1.1  christos     case BFD_RELOC_PPC_VLE_REL15:	r = R_PPC_VLE_REL15;		break;
    830  1.1  christos     case BFD_RELOC_PPC_VLE_REL24:	r = R_PPC_VLE_REL24;		break;
    831  1.1  christos     case BFD_RELOC_PPC_VLE_LO16A:	r = R_PPC_VLE_LO16A;		break;
    832  1.1  christos     case BFD_RELOC_PPC_VLE_LO16D:	r = R_PPC_VLE_LO16D;		break;
    833  1.1  christos     case BFD_RELOC_PPC_VLE_HI16A:	r = R_PPC_VLE_HI16A;		break;
    834  1.1  christos     case BFD_RELOC_PPC_VLE_HI16D:	r = R_PPC_VLE_HI16D;		break;
    835  1.1  christos     case BFD_RELOC_PPC_VLE_HA16A:	r = R_PPC_VLE_HA16A;		break;
    836  1.1  christos     case BFD_RELOC_PPC_VLE_HA16D:	r = R_PPC_VLE_HA16D;		break;
    837  1.1  christos     case BFD_RELOC_PPC_VLE_SDA21:	r = R_PPC_VLE_SDA21;		break;
    838  1.1  christos     case BFD_RELOC_PPC_VLE_SDA21_LO:	r = R_PPC_VLE_SDA21_LO;		break;
    839  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
    840  1.1  christos       r = R_PPC_VLE_SDAREL_LO16A;
    841  1.1  christos       break;
    842  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
    843  1.1  christos       r = R_PPC_VLE_SDAREL_LO16D;
    844  1.1  christos       break;
    845  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
    846  1.1  christos       r = R_PPC_VLE_SDAREL_HI16A;
    847  1.1  christos       break;
    848  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
    849  1.1  christos       r = R_PPC_VLE_SDAREL_HI16D;
    850  1.1  christos       break;
    851  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
    852  1.1  christos       r = R_PPC_VLE_SDAREL_HA16A;
    853  1.1  christos       break;
    854  1.1  christos     case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
    855  1.1  christos       r = R_PPC_VLE_SDAREL_HA16D;
    856  1.1  christos       break;
    857  1.1  christos     case BFD_RELOC_16_PCREL:		r = R_PPC_REL16;		break;
    858  1.1  christos     case BFD_RELOC_LO16_PCREL:		r = R_PPC_REL16_LO;		break;
    859  1.7  christos     case BFD_RELOC_HI16_PCREL:		r = R_PPC_REL16_HI;		break;
    860  1.3  christos     case BFD_RELOC_HI16_S_PCREL:	r = R_PPC_REL16_HA;		break;
    861  1.1  christos     case BFD_RELOC_PPC_16DX_HA:		r = R_PPC_16DX_HA;		break;
    862  1.1  christos     case BFD_RELOC_PPC_REL16DX_HA:	r = R_PPC_REL16DX_HA;		break;
    863  1.1  christos     case BFD_RELOC_VTABLE_INHERIT:	r = R_PPC_GNU_VTINHERIT;	break;
    864  1.1  christos     case BFD_RELOC_VTABLE_ENTRY:	r = R_PPC_GNU_VTENTRY;		break;
    865  1.1  christos     }
    866  1.1  christos 
    867  1.1  christos   return ppc_elf_howto_table[r];
    868  1.1  christos };
    869  1.1  christos 
    870  1.1  christos static reloc_howto_type *
    871  1.1  christos ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    872  1.1  christos 			   const char *r_name)
    873  1.1  christos {
    874  1.1  christos   unsigned int i;
    875  1.1  christos 
    876  1.1  christos   for (i = 0;
    877  1.1  christos        i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
    878  1.1  christos        i++)
    879  1.1  christos     if (ppc_elf_howto_raw[i].name != NULL
    880  1.1  christos 	&& strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
    881  1.1  christos       return &ppc_elf_howto_raw[i];
    882  1.1  christos 
    883  1.1  christos   return NULL;
    884  1.1  christos }
    885  1.1  christos 
    886  1.7  christos /* Set the howto pointer for a PowerPC ELF reloc.  */
    887  1.7  christos 
    888  1.1  christos static bfd_boolean
    889  1.1  christos ppc_elf_info_to_howto (bfd *abfd,
    890  1.1  christos 		       arelent *cache_ptr,
    891  1.3  christos 		       Elf_Internal_Rela *dst)
    892  1.3  christos {
    893  1.1  christos   unsigned int r_type;
    894  1.1  christos 
    895  1.1  christos   /* Initialize howto table if not already done.  */
    896  1.1  christos   if (!ppc_elf_howto_table[R_PPC_ADDR32])
    897  1.3  christos     ppc_elf_howto_init ();
    898  1.3  christos 
    899  1.3  christos   r_type = ELF32_R_TYPE (dst->r_info);
    900  1.7  christos   if (r_type >= R_PPC_max)
    901  1.7  christos     {
    902  1.7  christos       /* xgettext:c-format */
    903  1.3  christos       _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
    904  1.7  christos 			  abfd, r_type);
    905  1.3  christos       bfd_set_error (bfd_error_bad_value);
    906  1.7  christos       return FALSE;
    907  1.3  christos     }
    908  1.1  christos 
    909  1.1  christos   cache_ptr->howto = ppc_elf_howto_table[r_type];
    910  1.1  christos 
    911  1.7  christos   /* Just because the above assert didn't trigger doesn't mean that
    912  1.1  christos      ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation.  */
    913  1.7  christos   if (cache_ptr->howto == NULL)
    914  1.7  christos     {
    915  1.7  christos       /* xgettext:c-format */
    916  1.1  christos       _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
    917  1.1  christos 			  abfd, r_type);
    918  1.7  christos       bfd_set_error (bfd_error_bad_value);
    919  1.1  christos 
    920  1.7  christos       return FALSE;
    921  1.7  christos     }
    922  1.1  christos 
    923  1.1  christos   return TRUE;
    924  1.1  christos }
    925  1.1  christos 
    926  1.1  christos /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs.  */
    927  1.7  christos 
    928  1.1  christos static bfd_reloc_status_type
    929  1.1  christos ppc_elf_addr16_ha_reloc (bfd *abfd,
    930  1.7  christos 			 arelent *reloc_entry,
    931  1.1  christos 			 asymbol *symbol,
    932  1.1  christos 			 void *data,
    933  1.1  christos 			 asection *input_section,
    934  1.1  christos 			 bfd *output_bfd,
    935  1.3  christos 			 char **error_message ATTRIBUTE_UNUSED)
    936  1.3  christos {
    937  1.3  christos   enum elf_ppc_reloc_type r_type;
    938  1.3  christos   long insn;
    939  1.1  christos   bfd_size_type octets;
    940  1.1  christos   bfd_vma value;
    941  1.1  christos 
    942  1.1  christos   if (output_bfd != NULL)
    943  1.1  christos     {
    944  1.1  christos       reloc_entry->address += input_section->output_offset;
    945  1.1  christos       return bfd_reloc_ok;
    946  1.3  christos     }
    947  1.3  christos 
    948  1.3  christos   reloc_entry->addend += 0x8000;
    949  1.3  christos   r_type = reloc_entry->howto->type;
    950  1.3  christos   if (r_type != R_PPC_REL16DX_HA)
    951  1.3  christos     return bfd_reloc_continue;
    952  1.3  christos 
    953  1.3  christos   value = 0;
    954  1.3  christos   if (!bfd_is_com_section (symbol->section))
    955  1.3  christos     value = symbol->value;
    956  1.3  christos   value += (reloc_entry->addend
    957  1.3  christos 	    + symbol->section->output_offset
    958  1.3  christos 	    + symbol->section->output_section->vma);
    959  1.3  christos   value -= (reloc_entry->address
    960  1.3  christos 	    + input_section->output_offset
    961  1.3  christos 	    + input_section->output_section->vma);
    962  1.9  christos   value >>= 16;
    963  1.3  christos 
    964  1.3  christos   octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section);
    965  1.3  christos   insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
    966  1.3  christos   insn &= ~0x1fffc1;
    967  1.3  christos   insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
    968  1.1  christos   bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
    969  1.1  christos   return bfd_reloc_ok;
    970  1.1  christos }
    971  1.1  christos 
    972  1.1  christos static bfd_reloc_status_type
    973  1.1  christos ppc_elf_unhandled_reloc (bfd *abfd,
    974  1.1  christos 			 arelent *reloc_entry,
    975  1.1  christos 			 asymbol *symbol,
    976  1.1  christos 			 void *data,
    977  1.1  christos 			 asection *input_section,
    978  1.1  christos 			 bfd *output_bfd,
    979  1.1  christos 			 char **error_message)
    980  1.1  christos {
    981  1.1  christos   /* If this is a relocatable link (output_bfd test tells us), just
    982  1.1  christos      call the generic function.  Any adjustment will be done at final
    983  1.1  christos      link time.  */
    984  1.1  christos   if (output_bfd != NULL)
    985  1.1  christos     return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
    986  1.1  christos 				  input_section, output_bfd, error_message);
    987  1.1  christos 
    988  1.1  christos   if (error_message != NULL)
    989  1.1  christos     {
    990  1.1  christos       static char buf[60];
    991  1.1  christos       sprintf (buf, _("generic linker can't handle %s"),
    992  1.1  christos 	       reloc_entry->howto->name);
    993  1.1  christos       *error_message = buf;
    994  1.1  christos     }
    995  1.1  christos   return bfd_reloc_dangerous;
    996  1.1  christos }
    997  1.1  christos 
    998  1.1  christos /* Sections created by the linker.  */
   1000  1.1  christos 
   1001  1.1  christos typedef struct elf_linker_section
   1002  1.1  christos {
   1003  1.1  christos   /* Pointer to the bfd section.  */
   1004  1.1  christos   asection *section;
   1005  1.1  christos   /* Section name.  */
   1006  1.1  christos   const char *name;
   1007  1.1  christos   /* Associated bss section name.  */
   1008  1.1  christos   const char *bss_name;
   1009  1.1  christos   /* Associated symbol name.  */
   1010  1.1  christos   const char *sym_name;
   1011  1.1  christos   /* Associated symbol.  */
   1012  1.1  christos   struct elf_link_hash_entry *sym;
   1013  1.1  christos } elf_linker_section_t;
   1014  1.1  christos 
   1015  1.1  christos /* Linked list of allocated pointer entries.  This hangs off of the
   1016  1.1  christos    symbol lists, and provides allows us to return different pointers,
   1017  1.1  christos    based on different addend's.  */
   1018  1.1  christos 
   1019  1.1  christos typedef struct elf_linker_section_pointers
   1020  1.1  christos {
   1021  1.1  christos   /* next allocated pointer for this symbol */
   1022  1.1  christos   struct elf_linker_section_pointers *next;
   1023  1.1  christos   /* offset of pointer from beginning of section */
   1024  1.1  christos   bfd_vma offset;
   1025  1.1  christos   /* addend used */
   1026  1.1  christos   bfd_vma addend;
   1027  1.1  christos   /* which linker section this is */
   1028  1.1  christos   elf_linker_section_t *lsect;
   1029  1.1  christos } elf_linker_section_pointers_t;
   1030  1.1  christos 
   1031  1.1  christos struct ppc_elf_obj_tdata
   1032  1.1  christos {
   1033  1.1  christos   struct elf_obj_tdata elf;
   1034  1.1  christos 
   1035  1.1  christos   /* A mapping from local symbols to offsets into the various linker
   1036  1.1  christos      sections added.  This is index by the symbol index.  */
   1037  1.1  christos   elf_linker_section_pointers_t **linker_section_pointers;
   1038  1.1  christos 
   1039  1.1  christos   /* Flags used to auto-detect plt type.  */
   1040  1.1  christos   unsigned int makes_plt_call : 1;
   1041  1.1  christos   unsigned int has_rel16 : 1;
   1042  1.1  christos };
   1043  1.1  christos 
   1044  1.1  christos #define ppc_elf_tdata(bfd) \
   1045  1.1  christos   ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
   1046  1.1  christos 
   1047  1.1  christos #define elf_local_ptr_offsets(bfd) \
   1048  1.1  christos   (ppc_elf_tdata (bfd)->linker_section_pointers)
   1049  1.1  christos 
   1050  1.1  christos #define is_ppc_elf(bfd) \
   1051  1.1  christos   (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
   1052  1.1  christos    && elf_object_id (bfd) == PPC32_ELF_DATA)
   1053  1.1  christos 
   1054  1.1  christos /* Override the generic function because we store some extras.  */
   1055  1.1  christos 
   1056  1.1  christos static bfd_boolean
   1057  1.1  christos ppc_elf_mkobject (bfd *abfd)
   1058  1.1  christos {
   1059  1.1  christos   return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
   1060  1.6  christos 				  PPC32_ELF_DATA);
   1061  1.6  christos }
   1062  1.6  christos 
   1063  1.6  christos /* When defaulting arch/mach, decode apuinfo to find a better match.  */
   1064  1.6  christos 
   1065  1.6  christos bfd_boolean
   1066  1.6  christos _bfd_elf_ppc_set_arch (bfd *abfd)
   1067  1.6  christos {
   1068  1.6  christos   unsigned long mach = 0;
   1069  1.6  christos   asection *s;
   1070  1.6  christos   unsigned char *contents;
   1071  1.6  christos 
   1072  1.6  christos   if (abfd->arch_info->bits_per_word == 32
   1073  1.6  christos       && bfd_big_endian (abfd))
   1074  1.6  christos     {
   1075  1.6  christos 
   1076  1.6  christos       for (s = abfd->sections; s != NULL; s = s->next)
   1077  1.6  christos 	if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
   1078  1.6  christos 	  break;
   1079  1.6  christos       if (s != NULL)
   1080  1.6  christos 	mach = bfd_mach_ppc_vle;
   1081  1.6  christos     }
   1082  1.6  christos 
   1083  1.9  christos   if (mach == 0)
   1084  1.9  christos     {
   1085  1.9  christos       s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1086  1.6  christos       if (s != NULL
   1087  1.6  christos 	  && s->size >= 24
   1088  1.6  christos 	  && bfd_malloc_and_get_section (abfd, s, &contents))
   1089  1.6  christos 	{
   1090  1.6  christos 	  unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
   1091  1.6  christos 	  unsigned int i;
   1092  1.6  christos 
   1093  1.6  christos 	  for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
   1094  1.6  christos 	    {
   1095  1.6  christos 	      unsigned int val = bfd_get_32 (abfd, contents + i);
   1096  1.6  christos 	      switch (val >> 16)
   1097  1.6  christos 		{
   1098  1.6  christos 		case PPC_APUINFO_PMR:
   1099  1.6  christos 		case PPC_APUINFO_RFMCI:
   1100  1.6  christos 		  if (mach == 0)
   1101  1.6  christos 		    mach = bfd_mach_ppc_titan;
   1102  1.6  christos 		  break;
   1103  1.6  christos 
   1104  1.6  christos 		case PPC_APUINFO_ISEL:
   1105  1.6  christos 		case PPC_APUINFO_CACHELCK:
   1106  1.6  christos 		  if (mach == bfd_mach_ppc_titan)
   1107  1.6  christos 		    mach = bfd_mach_ppc_e500mc;
   1108  1.6  christos 		  break;
   1109  1.6  christos 
   1110  1.6  christos 		case PPC_APUINFO_SPE:
   1111  1.6  christos 		case PPC_APUINFO_EFS:
   1112  1.7  christos 		case PPC_APUINFO_BRLOCK:
   1113  1.6  christos 		  if (mach != bfd_mach_ppc_vle)
   1114  1.6  christos 		    mach = bfd_mach_ppc_e500;
   1115  1.6  christos 		  break;
   1116  1.6  christos 
   1117  1.6  christos 		case PPC_APUINFO_VLE:
   1118  1.6  christos 		  mach = bfd_mach_ppc_vle;
   1119  1.6  christos 		  break;
   1120  1.6  christos 
   1121  1.6  christos 		default:
   1122  1.6  christos 		  mach = -1ul;
   1123  1.6  christos 		}
   1124  1.6  christos 	    }
   1125  1.6  christos 	  free (contents);
   1126  1.6  christos 	}
   1127  1.6  christos     }
   1128  1.6  christos 
   1129  1.6  christos   if (mach != 0 && mach != -1ul)
   1130  1.6  christos     {
   1131  1.6  christos       const bfd_arch_info_type *arch;
   1132  1.6  christos 
   1133  1.6  christos       for (arch = abfd->arch_info->next; arch; arch = arch->next)
   1134  1.6  christos 	if (arch->mach == mach)
   1135  1.6  christos 	  {
   1136  1.6  christos 	    abfd->arch_info = arch;
   1137  1.6  christos 	    break;
   1138  1.6  christos 	  }
   1139  1.6  christos     }
   1140  1.1  christos   return TRUE;
   1141  1.6  christos }
   1142  1.1  christos 
   1143  1.1  christos /* Fix bad default arch selected for a 32 bit input bfd when the
   1144  1.1  christos    default is 64 bit.  Also select arch based on apuinfo.  */
   1145  1.1  christos 
   1146  1.6  christos static bfd_boolean
   1147  1.6  christos ppc_elf_object_p (bfd *abfd)
   1148  1.6  christos {
   1149  1.6  christos   if (!abfd->arch_info->the_default)
   1150  1.1  christos     return TRUE;
   1151  1.1  christos 
   1152  1.1  christos   if (abfd->arch_info->bits_per_word == 64)
   1153  1.1  christos     {
   1154  1.1  christos       Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
   1155  1.1  christos 
   1156  1.1  christos       if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
   1157  1.1  christos 	{
   1158  1.1  christos 	  /* Relies on arch after 64 bit default being 32 bit default.  */
   1159  1.1  christos 	  abfd->arch_info = abfd->arch_info->next;
   1160  1.6  christos 	  BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
   1161  1.1  christos 	}
   1162  1.1  christos     }
   1163  1.1  christos   return _bfd_elf_ppc_set_arch (abfd);
   1164  1.1  christos }
   1165  1.1  christos 
   1166  1.1  christos /* Function to set whether a module needs the -mrelocatable bit set.  */
   1167  1.1  christos 
   1168  1.1  christos static bfd_boolean
   1169  1.1  christos ppc_elf_set_private_flags (bfd *abfd, flagword flags)
   1170  1.1  christos {
   1171  1.1  christos   BFD_ASSERT (!elf_flags_init (abfd)
   1172  1.1  christos 	      || elf_elfheader (abfd)->e_flags == flags);
   1173  1.1  christos 
   1174  1.1  christos   elf_elfheader (abfd)->e_flags = flags;
   1175  1.1  christos   elf_flags_init (abfd) = TRUE;
   1176  1.1  christos   return TRUE;
   1177  1.1  christos }
   1178  1.1  christos 
   1179  1.1  christos /* Support for core dump NOTE sections.  */
   1180  1.1  christos 
   1181  1.1  christos static bfd_boolean
   1182  1.1  christos ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
   1183  1.1  christos {
   1184  1.1  christos   int offset;
   1185  1.1  christos   unsigned int size;
   1186  1.1  christos 
   1187  1.1  christos   switch (note->descsz)
   1188  1.1  christos     {
   1189  1.1  christos     default:
   1190  1.1  christos       return FALSE;
   1191  1.3  christos 
   1192  1.1  christos     case 268:		/* Linux/PPC.  */
   1193  1.1  christos       /* pr_cursig */
   1194  1.3  christos       elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
   1195  1.1  christos 
   1196  1.1  christos       /* pr_pid */
   1197  1.1  christos       elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
   1198  1.1  christos 
   1199  1.1  christos       /* pr_reg */
   1200  1.1  christos       offset = 72;
   1201  1.1  christos       size = 192;
   1202  1.1  christos 
   1203  1.1  christos       break;
   1204  1.1  christos     }
   1205  1.1  christos 
   1206  1.1  christos   /* Make a ".reg/999" section.  */
   1207  1.1  christos   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
   1208  1.1  christos 					  size, note->descpos + offset);
   1209  1.1  christos }
   1210  1.1  christos 
   1211  1.1  christos static bfd_boolean
   1212  1.1  christos ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
   1213  1.1  christos {
   1214  1.1  christos   switch (note->descsz)
   1215  1.1  christos     {
   1216  1.1  christos     default:
   1217  1.3  christos       return FALSE;
   1218  1.1  christos 
   1219  1.3  christos     case 128:		/* Linux/PPC elf_prpsinfo.  */
   1220  1.1  christos       elf_tdata (abfd)->core->pid
   1221  1.3  christos 	= bfd_get_32 (abfd, note->descdata + 16);
   1222  1.1  christos       elf_tdata (abfd)->core->program
   1223  1.1  christos 	= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
   1224  1.1  christos       elf_tdata (abfd)->core->command
   1225  1.1  christos 	= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
   1226  1.1  christos     }
   1227  1.1  christos 
   1228  1.1  christos   /* Note that for some reason, a spurious space is tacked
   1229  1.1  christos      onto the end of the args in some (at least one anyway)
   1230  1.3  christos      implementations, so strip it off if it exists.  */
   1231  1.1  christos 
   1232  1.1  christos   {
   1233  1.1  christos     char *command = elf_tdata (abfd)->core->command;
   1234  1.1  christos     int n = strlen (command);
   1235  1.1  christos 
   1236  1.1  christos     if (0 < n && command[n - 1] == ' ')
   1237  1.1  christos       command[n - 1] = '\0';
   1238  1.1  christos   }
   1239  1.1  christos 
   1240  1.1  christos   return TRUE;
   1241  1.1  christos }
   1242  1.1  christos 
   1243  1.1  christos static char *
   1244  1.1  christos ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
   1245  1.1  christos {
   1246  1.1  christos   switch (note_type)
   1247  1.1  christos     {
   1248  1.1  christos     default:
   1249  1.1  christos       return NULL;
   1250  1.7  christos 
   1251  1.1  christos     case NT_PRPSINFO:
   1252  1.1  christos       {
   1253  1.1  christos 	char data[128] ATTRIBUTE_NONSTRING;
   1254  1.1  christos 	va_list ap;
   1255  1.1  christos 
   1256  1.9  christos 	va_start (ap, note_type);
   1257  1.7  christos 	memset (data, 0, sizeof (data));
   1258  1.9  christos 	strncpy (data + 32, va_arg (ap, const char *), 16);
   1259  1.7  christos #if GCC_VERSION == 8000 || GCC_VERSION == 8001
   1260  1.7  christos 	DIAGNOSTIC_PUSH;
   1261  1.7  christos 	/* GCC 8.0 and 8.1 warn about 80 equals destination size with
   1262  1.7  christos 	   -Wstringop-truncation:
   1263  1.7  christos 	   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
   1264  1.1  christos 	 */
   1265  1.9  christos 	DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
   1266  1.7  christos #endif
   1267  1.7  christos 	strncpy (data + 48, va_arg (ap, const char *), 80);
   1268  1.1  christos #if GCC_VERSION == 8000 || GCC_VERSION == 8001
   1269  1.1  christos 	DIAGNOSTIC_POP;
   1270  1.1  christos #endif
   1271  1.1  christos 	va_end (ap);
   1272  1.1  christos 	return elfcore_write_note (abfd, buf, bufsiz,
   1273  1.1  christos 				   "CORE", note_type, data, sizeof (data));
   1274  1.1  christos       }
   1275  1.1  christos 
   1276  1.1  christos     case NT_PRSTATUS:
   1277  1.1  christos       {
   1278  1.1  christos 	char data[268];
   1279  1.1  christos 	va_list ap;
   1280  1.1  christos 	long pid;
   1281  1.1  christos 	int cursig;
   1282  1.1  christos 	const void *greg;
   1283  1.1  christos 
   1284  1.1  christos 	va_start (ap, note_type);
   1285  1.1  christos 	memset (data, 0, 72);
   1286  1.1  christos 	pid = va_arg (ap, long);
   1287  1.1  christos 	bfd_put_32 (abfd, pid, data + 24);
   1288  1.1  christos 	cursig = va_arg (ap, int);
   1289  1.1  christos 	bfd_put_16 (abfd, cursig, data + 12);
   1290  1.1  christos 	greg = va_arg (ap, const void *);
   1291  1.1  christos 	memcpy (data + 72, greg, 192);
   1292  1.1  christos 	memset (data + 264, 0, 4);
   1293  1.1  christos 	va_end (ap);
   1294  1.1  christos 	return elfcore_write_note (abfd, buf, bufsiz,
   1295  1.1  christos 				   "CORE", note_type, data, sizeof (data));
   1296  1.1  christos       }
   1297  1.1  christos     }
   1298  1.3  christos }
   1299  1.1  christos 
   1300  1.1  christos static flagword
   1301  1.1  christos ppc_elf_lookup_section_flags (char *flag_name)
   1302  1.1  christos {
   1303  1.1  christos 
   1304  1.1  christos   if (!strcmp (flag_name, "SHF_PPC_VLE"))
   1305  1.1  christos     return SHF_PPC_VLE;
   1306  1.1  christos 
   1307  1.1  christos   return 0;
   1308  1.1  christos }
   1309  1.1  christos 
   1310  1.1  christos /* Return address for Ith PLT stub in section PLT, for relocation REL
   1311  1.1  christos    or (bfd_vma) -1 if it should not be included.  */
   1312  1.1  christos 
   1313  1.1  christos static bfd_vma
   1314  1.1  christos ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
   1315  1.1  christos 		     const asection *plt ATTRIBUTE_UNUSED,
   1316  1.1  christos 		     const arelent *rel)
   1317  1.1  christos {
   1318  1.1  christos   return rel->address;
   1319  1.1  christos }
   1320  1.1  christos 
   1321  1.1  christos /* Handle a PowerPC specific section when reading an object file.  This
   1322  1.1  christos    is called when bfd_section_from_shdr finds a section with an unknown
   1323  1.1  christos    type.  */
   1324  1.1  christos 
   1325  1.1  christos static bfd_boolean
   1326  1.1  christos ppc_elf_section_from_shdr (bfd *abfd,
   1327  1.1  christos 			   Elf_Internal_Shdr *hdr,
   1328  1.1  christos 			   const char *name,
   1329  1.1  christos 			   int shindex)
   1330  1.1  christos {
   1331  1.1  christos   asection *newsect;
   1332  1.1  christos   flagword flags;
   1333  1.1  christos 
   1334  1.1  christos   if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
   1335  1.9  christos     return FALSE;
   1336  1.1  christos 
   1337  1.1  christos   newsect = hdr->bfd_section;
   1338  1.1  christos   flags = bfd_section_flags (newsect);
   1339  1.1  christos   if (hdr->sh_flags & SHF_EXCLUDE)
   1340  1.1  christos     flags |= SEC_EXCLUDE;
   1341  1.1  christos 
   1342  1.9  christos   if (hdr->sh_type == SHT_ORDERED)
   1343  1.1  christos     flags |= SEC_SORT_ENTRIES;
   1344  1.1  christos 
   1345  1.1  christos   bfd_set_section_flags (newsect, flags);
   1346  1.1  christos   return TRUE;
   1347  1.1  christos }
   1348  1.1  christos 
   1349  1.1  christos /* Set up any other section flags and such that may be necessary.  */
   1350  1.1  christos 
   1351  1.1  christos static bfd_boolean
   1352  1.1  christos ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
   1353  1.1  christos 		       Elf_Internal_Shdr *shdr,
   1354  1.1  christos 		       asection *asect)
   1355  1.1  christos {
   1356  1.1  christos   if ((asect->flags & SEC_SORT_ENTRIES) != 0)
   1357  1.1  christos     shdr->sh_type = SHT_ORDERED;
   1358  1.1  christos 
   1359  1.1  christos   return TRUE;
   1360  1.1  christos }
   1361  1.1  christos 
   1362  1.1  christos /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
   1363  1.1  christos    need to bump up the number of section headers.  */
   1364  1.1  christos 
   1365  1.1  christos static int
   1366  1.1  christos ppc_elf_additional_program_headers (bfd *abfd,
   1367  1.1  christos 				    struct bfd_link_info *info ATTRIBUTE_UNUSED)
   1368  1.1  christos {
   1369  1.1  christos   asection *s;
   1370  1.1  christos   int ret = 0;
   1371  1.1  christos 
   1372  1.1  christos   s = bfd_get_section_by_name (abfd, ".sbss2");
   1373  1.1  christos   if (s != NULL && (s->flags & SEC_ALLOC) != 0)
   1374  1.1  christos     ++ret;
   1375  1.1  christos 
   1376  1.1  christos   s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
   1377  1.1  christos   if (s != NULL && (s->flags & SEC_ALLOC) != 0)
   1378  1.1  christos     ++ret;
   1379  1.1  christos 
   1380  1.3  christos   return ret;
   1381  1.1  christos }
   1382  1.1  christos 
   1383  1.1  christos /* Modify the segment map for VLE executables.  */
   1384  1.1  christos 
   1385  1.1  christos bfd_boolean
   1386  1.7  christos ppc_elf_modify_segment_map (bfd *abfd,
   1387  1.1  christos 			    struct bfd_link_info *info ATTRIBUTE_UNUSED)
   1388  1.1  christos {
   1389  1.1  christos   struct elf_segment_map *m;
   1390  1.1  christos 
   1391  1.1  christos   /* At this point in the link, output sections have already been sorted by
   1392  1.1  christos      LMA and assigned to segments.  All that is left to do is to ensure
   1393  1.1  christos      there is no mixing of VLE & non-VLE sections in a text segment.
   1394  1.3  christos      If we find that case, we split the segment.
   1395  1.1  christos      We maintain the original output section order.  */
   1396  1.7  christos 
   1397  1.7  christos   for (m = elf_seg_map (abfd); m != NULL; m = m->next)
   1398  1.7  christos     {
   1399  1.7  christos       struct elf_segment_map *n;
   1400  1.7  christos       bfd_size_type amt;
   1401  1.7  christos       unsigned int j, k;
   1402  1.1  christos       unsigned int p_flags;
   1403  1.1  christos 
   1404  1.7  christos       if (m->p_type != PT_LOAD || m->count == 0)
   1405  1.1  christos 	continue;
   1406  1.7  christos 
   1407  1.7  christos       for (p_flags = PF_R, j = 0; j != m->count; ++j)
   1408  1.7  christos 	{
   1409  1.7  christos 	  if ((m->sections[j]->flags & SEC_READONLY) == 0)
   1410  1.7  christos 	    p_flags |= PF_W;
   1411  1.7  christos 	  if ((m->sections[j]->flags & SEC_CODE) != 0)
   1412  1.7  christos 	    {
   1413  1.7  christos 	      p_flags |= PF_X;
   1414  1.7  christos 	      if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
   1415  1.7  christos 		p_flags |= PF_PPC_VLE;
   1416  1.7  christos 	      break;
   1417  1.7  christos 	    }
   1418  1.7  christos 	}
   1419  1.7  christos       if (j != m->count)
   1420  1.1  christos 	while (++j != m->count)
   1421  1.7  christos 	  {
   1422  1.7  christos 	    unsigned int p_flags1 = PF_R;
   1423  1.7  christos 
   1424  1.7  christos 	    if ((m->sections[j]->flags & SEC_READONLY) == 0)
   1425  1.7  christos 	      p_flags1 |= PF_W;
   1426  1.7  christos 	    if ((m->sections[j]->flags & SEC_CODE) != 0)
   1427  1.7  christos 	      {
   1428  1.7  christos 		p_flags1 |= PF_X;
   1429  1.7  christos 		if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
   1430  1.7  christos 		  p_flags1 |= PF_PPC_VLE;
   1431  1.7  christos 		if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
   1432  1.7  christos 		  break;
   1433  1.7  christos 	      }
   1434  1.7  christos 	    p_flags |= p_flags1;
   1435  1.7  christos 	  }
   1436  1.7  christos       /* If we're splitting a segment which originally contained rw
   1437  1.7  christos 	 sections then those sections might now only be in one of the
   1438  1.7  christos 	 two parts.  So always set p_flags if splitting, even if we
   1439  1.7  christos 	 are being called for objcopy with p_flags_valid set.  */
   1440  1.7  christos       if (j != m->count || !m->p_flags_valid)
   1441  1.7  christos 	{
   1442  1.7  christos 	  m->p_flags_valid = 1;
   1443  1.1  christos 	  m->p_flags = p_flags;
   1444  1.1  christos 	}
   1445  1.7  christos       if (j == m->count)
   1446  1.1  christos 	continue;
   1447  1.1  christos 
   1448  1.1  christos       /* Sections 0..j-1 stay in this (current) segment,
   1449  1.1  christos 	 the remainder are put in a new segment.
   1450  1.1  christos 	 The scan resumes with the new segment.  */
   1451  1.1  christos 
   1452  1.1  christos       amt = sizeof (struct elf_segment_map);
   1453  1.7  christos       amt += (m->count - j - 1) * sizeof (asection *);
   1454  1.1  christos       n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
   1455  1.1  christos       if (n == NULL)
   1456  1.1  christos 	return FALSE;
   1457  1.1  christos 
   1458  1.7  christos       n->p_type = PT_LOAD;
   1459  1.7  christos       n->count = m->count - j;
   1460  1.7  christos       for (k = 0; k < n->count; ++k)
   1461  1.1  christos 	n->sections[k] = m->sections[j + k];
   1462  1.1  christos       m->count = j;
   1463  1.1  christos       m->p_size_valid = 0;
   1464  1.1  christos       n->next = m->next;
   1465  1.1  christos       m->next = n;
   1466  1.1  christos     }
   1467  1.1  christos 
   1468  1.1  christos   return TRUE;
   1469  1.1  christos }
   1470  1.1  christos 
   1471  1.1  christos /* Add extra PPC sections -- Note, for now, make .sbss2 and
   1472  1.1  christos    .PPC.EMB.sbss0 a normal section, and not a bss section so
   1473  1.1  christos    that the linker doesn't crater when trying to make more than
   1474  1.1  christos    2 sections.  */
   1475  1.6  christos 
   1476  1.6  christos static const struct bfd_elf_special_section ppc_elf_special_sections[] =
   1477  1.6  christos {
   1478  1.6  christos   { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
   1479  1.6  christos   { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
   1480  1.6  christos   { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
   1481  1.6  christos   { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
   1482  1.6  christos   { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
   1483  1.6  christos   { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
   1484  1.6  christos   { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
   1485  1.1  christos   { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
   1486  1.1  christos   { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
   1487  1.1  christos   { NULL, 0, 0, 0, 0 }
   1488  1.1  christos };
   1489  1.7  christos 
   1490  1.1  christos /* This is what we want for new plt/got.  */
   1491  1.1  christos static struct bfd_elf_special_section ppc_alt_plt =
   1492  1.7  christos   { STRING_COMMA_LEN (".plt"),		   0, SHT_PROGBITS, SHF_ALLOC };
   1493  1.1  christos 
   1494  1.1  christos static const struct bfd_elf_special_section *
   1495  1.1  christos ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
   1496  1.1  christos {
   1497  1.1  christos   const struct bfd_elf_special_section *ssect;
   1498  1.1  christos 
   1499  1.1  christos   /* See if this is one of the special sections.  */
   1500  1.1  christos   if (sec->name == NULL)
   1501  1.1  christos     return NULL;
   1502  1.1  christos 
   1503  1.1  christos   ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
   1504  1.1  christos 					sec->use_rela_p);
   1505  1.1  christos   if (ssect != NULL)
   1506  1.1  christos     {
   1507  1.1  christos       if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
   1508  1.1  christos 	ssect = &ppc_alt_plt;
   1509  1.1  christos       return ssect;
   1510  1.1  christos     }
   1511  1.1  christos 
   1512  1.1  christos   return _bfd_elf_get_sec_type_attr (abfd, sec);
   1513  1.1  christos }
   1514  1.1  christos 
   1515  1.1  christos /* Very simple linked list structure for recording apuinfo values.  */
   1517  1.1  christos typedef struct apuinfo_list
   1518  1.1  christos {
   1519  1.1  christos   struct apuinfo_list *next;
   1520  1.1  christos   unsigned long value;
   1521  1.1  christos }
   1522  1.1  christos apuinfo_list;
   1523  1.1  christos 
   1524  1.1  christos static apuinfo_list *head;
   1525  1.1  christos static bfd_boolean apuinfo_set;
   1526  1.1  christos 
   1527  1.1  christos static void
   1528  1.1  christos apuinfo_list_init (void)
   1529  1.1  christos {
   1530  1.1  christos   head = NULL;
   1531  1.1  christos   apuinfo_set = FALSE;
   1532  1.1  christos }
   1533  1.1  christos 
   1534  1.1  christos static void
   1535  1.1  christos apuinfo_list_add (unsigned long value)
   1536  1.1  christos {
   1537  1.1  christos   apuinfo_list *entry = head;
   1538  1.1  christos 
   1539  1.1  christos   while (entry != NULL)
   1540  1.1  christos     {
   1541  1.1  christos       if (entry->value == value)
   1542  1.1  christos 	return;
   1543  1.1  christos       entry = entry->next;
   1544  1.1  christos     }
   1545  1.1  christos 
   1546  1.1  christos   entry = bfd_malloc (sizeof (* entry));
   1547  1.1  christos   if (entry == NULL)
   1548  1.1  christos     return;
   1549  1.1  christos 
   1550  1.1  christos   entry->value = value;
   1551  1.1  christos   entry->next  = head;
   1552  1.1  christos   head = entry;
   1553  1.1  christos }
   1554  1.1  christos 
   1555  1.1  christos static unsigned
   1556  1.1  christos apuinfo_list_length (void)
   1557  1.1  christos {
   1558  1.1  christos   apuinfo_list *entry;
   1559  1.1  christos   unsigned long count;
   1560  1.1  christos 
   1561  1.1  christos   for (entry = head, count = 0;
   1562  1.1  christos        entry;
   1563  1.1  christos        entry = entry->next)
   1564  1.1  christos     ++ count;
   1565  1.1  christos 
   1566  1.1  christos   return count;
   1567  1.1  christos }
   1568  1.1  christos 
   1569  1.1  christos static inline unsigned long
   1570  1.1  christos apuinfo_list_element (unsigned long number)
   1571  1.1  christos {
   1572  1.1  christos   apuinfo_list * entry;
   1573  1.1  christos 
   1574  1.1  christos   for (entry = head;
   1575  1.1  christos        entry && number --;
   1576  1.1  christos        entry = entry->next)
   1577  1.1  christos     ;
   1578  1.1  christos 
   1579  1.1  christos   return entry ? entry->value : 0;
   1580  1.1  christos }
   1581  1.1  christos 
   1582  1.1  christos static void
   1583  1.1  christos apuinfo_list_finish (void)
   1584  1.1  christos {
   1585  1.1  christos   apuinfo_list *entry;
   1586  1.1  christos 
   1587  1.1  christos   for (entry = head; entry;)
   1588  1.1  christos     {
   1589  1.1  christos       apuinfo_list *next = entry->next;
   1590  1.1  christos       free (entry);
   1591  1.1  christos       entry = next;
   1592  1.1  christos     }
   1593  1.1  christos 
   1594  1.1  christos   head = NULL;
   1595  1.1  christos }
   1596  1.1  christos 
   1597  1.1  christos /* Scan the input BFDs and create a linked list of
   1598  1.1  christos    the APUinfo values that will need to be emitted.  */
   1599  1.1  christos 
   1600  1.1  christos static void
   1601  1.1  christos ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
   1602  1.1  christos {
   1603  1.1  christos   bfd *ibfd;
   1604  1.1  christos   asection *asec;
   1605  1.1  christos   char *buffer = NULL;
   1606  1.1  christos   bfd_size_type largest_input_size = 0;
   1607  1.1  christos   unsigned i;
   1608  1.1  christos   unsigned long length;
   1609  1.1  christos   const char *error_message = NULL;
   1610  1.1  christos 
   1611  1.1  christos   if (link_info == NULL)
   1612  1.1  christos     return;
   1613  1.3  christos 
   1614  1.1  christos   apuinfo_list_init ();
   1615  1.1  christos 
   1616  1.1  christos   /* Read in the input sections contents.  */
   1617  1.1  christos   for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
   1618  1.1  christos     {
   1619  1.1  christos       unsigned long datum;
   1620  1.1  christos 
   1621  1.7  christos       asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
   1622  1.7  christos       if (asec == NULL)
   1623  1.1  christos 	continue;
   1624  1.1  christos 
   1625  1.1  christos       /* xgettext:c-format */
   1626  1.1  christos       error_message = _("corrupt %s section in %pB");
   1627  1.1  christos       length = asec->size;
   1628  1.1  christos       if (length < 20)
   1629  1.1  christos 	goto fail;
   1630  1.1  christos 
   1631  1.1  christos       apuinfo_set = TRUE;
   1632  1.1  christos       if (largest_input_size < asec->size)
   1633  1.1  christos 	{
   1634  1.1  christos 	  if (buffer)
   1635  1.1  christos 	    free (buffer);
   1636  1.1  christos 	  largest_input_size = asec->size;
   1637  1.1  christos 	  buffer = bfd_malloc (largest_input_size);
   1638  1.1  christos 	  if (!buffer)
   1639  1.1  christos 	    return;
   1640  1.1  christos 	}
   1641  1.7  christos 
   1642  1.7  christos       if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
   1643  1.1  christos 	  || (bfd_bread (buffer, length, ibfd) != length))
   1644  1.1  christos 	{
   1645  1.1  christos 	  /* xgettext:c-format */
   1646  1.1  christos 	  error_message = _("unable to read in %s section from %pB");
   1647  1.1  christos 	  goto fail;
   1648  1.1  christos 	}
   1649  1.1  christos 
   1650  1.1  christos       /* Verify the contents of the header.  Note - we have to
   1651  1.1  christos 	 extract the values this way in order to allow for a
   1652  1.1  christos 	 host whose endian-ness is different from the target.  */
   1653  1.1  christos       datum = bfd_get_32 (ibfd, buffer);
   1654  1.1  christos       if (datum != sizeof APUINFO_LABEL)
   1655  1.1  christos 	goto fail;
   1656  1.1  christos 
   1657  1.1  christos       datum = bfd_get_32 (ibfd, buffer + 8);
   1658  1.1  christos       if (datum != 0x2)
   1659  1.1  christos 	goto fail;
   1660  1.1  christos 
   1661  1.1  christos       if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
   1662  1.1  christos 	goto fail;
   1663  1.1  christos 
   1664  1.1  christos       /* Get the number of bytes used for apuinfo entries.  */
   1665  1.1  christos       datum = bfd_get_32 (ibfd, buffer + 4);
   1666  1.1  christos       if (datum + 20 != length)
   1667  1.1  christos 	goto fail;
   1668  1.1  christos 
   1669  1.1  christos       /* Scan the apuinfo section, building a list of apuinfo numbers.  */
   1670  1.1  christos       for (i = 0; i < datum; i += 4)
   1671  1.1  christos 	apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
   1672  1.1  christos     }
   1673  1.1  christos 
   1674  1.1  christos   error_message = NULL;
   1675  1.1  christos 
   1676  1.1  christos   if (apuinfo_set)
   1677  1.1  christos     {
   1678  1.1  christos       /* Compute the size of the output section.  */
   1679  1.1  christos       unsigned num_entries = apuinfo_list_length ();
   1680  1.9  christos 
   1681  1.1  christos       /* Set the output section size, if it exists.  */
   1682  1.1  christos       asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1683  1.7  christos 
   1684  1.7  christos       if (asec && !bfd_set_section_size (asec, 20 + num_entries * 4))
   1685  1.1  christos 	{
   1686  1.1  christos 	  ibfd = abfd;
   1687  1.1  christos 	  /* xgettext:c-format */
   1688  1.1  christos 	  error_message = _("warning: unable to set size of %s section in %pB");
   1689  1.1  christos 	}
   1690  1.1  christos     }
   1691  1.1  christos 
   1692  1.1  christos  fail:
   1693  1.7  christos   if (buffer)
   1694  1.1  christos     free (buffer);
   1695  1.1  christos 
   1696  1.1  christos   if (error_message)
   1697  1.1  christos     _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
   1698  1.1  christos }
   1699  1.1  christos 
   1700  1.1  christos /* Prevent the output section from accumulating the input sections'
   1701  1.1  christos    contents.  We have already stored this in our linked list structure.  */
   1702  1.1  christos 
   1703  1.1  christos static bfd_boolean
   1704  1.1  christos ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
   1705  1.1  christos 		       struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
   1706  1.1  christos 		       asection *asec,
   1707  1.1  christos 		       bfd_byte *contents ATTRIBUTE_UNUSED)
   1708  1.1  christos {
   1709  1.1  christos   return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
   1710  1.1  christos }
   1711  1.9  christos 
   1712  1.1  christos /* Finally we can generate the output section.  */
   1713  1.1  christos 
   1714  1.1  christos static void
   1715  1.1  christos ppc_final_write_processing (bfd *abfd)
   1716  1.1  christos {
   1717  1.1  christos   bfd_byte *buffer;
   1718  1.1  christos   asection *asec;
   1719  1.1  christos   unsigned i;
   1720  1.1  christos   unsigned num_entries;
   1721  1.1  christos   bfd_size_type length;
   1722  1.1  christos 
   1723  1.1  christos   asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1724  1.1  christos   if (asec == NULL)
   1725  1.1  christos     return;
   1726  1.1  christos 
   1727  1.1  christos   if (!apuinfo_set)
   1728  1.1  christos     return;
   1729  1.1  christos 
   1730  1.1  christos   length = asec->size;
   1731  1.1  christos   if (length < 20)
   1732  1.1  christos     return;
   1733  1.7  christos 
   1734  1.7  christos   buffer = bfd_malloc (length);
   1735  1.1  christos   if (buffer == NULL)
   1736  1.1  christos     {
   1737  1.1  christos       _bfd_error_handler
   1738  1.1  christos 	(_("failed to allocate space for new APUinfo section"));
   1739  1.1  christos       return;
   1740  1.1  christos     }
   1741  1.1  christos 
   1742  1.1  christos   /* Create the apuinfo header.  */
   1743  1.1  christos   num_entries = apuinfo_list_length ();
   1744  1.1  christos   bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
   1745  1.1  christos   bfd_put_32 (abfd, num_entries * 4, buffer + 4);
   1746  1.1  christos   bfd_put_32 (abfd, 0x2, buffer + 8);
   1747  1.1  christos   strcpy ((char *) buffer + 12, APUINFO_LABEL);
   1748  1.1  christos 
   1749  1.1  christos   length = 20;
   1750  1.1  christos   for (i = 0; i < num_entries; i++)
   1751  1.1  christos     {
   1752  1.1  christos       bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
   1753  1.7  christos       length += 4;
   1754  1.1  christos     }
   1755  1.1  christos 
   1756  1.7  christos   if (length != asec->size)
   1757  1.1  christos     _bfd_error_handler (_("failed to compute new APUinfo section"));
   1758  1.1  christos 
   1759  1.1  christos   if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
   1760  1.1  christos     _bfd_error_handler (_("failed to install new APUinfo section"));
   1761  1.1  christos 
   1762  1.9  christos   free (buffer);
   1763  1.9  christos 
   1764  1.9  christos   apuinfo_list_finish ();
   1765  1.9  christos }
   1766  1.9  christos 
   1767  1.9  christos static bfd_boolean
   1768  1.9  christos ppc_elf_final_write_processing (bfd *abfd)
   1769  1.1  christos {
   1770  1.1  christos   ppc_final_write_processing (abfd);
   1771  1.1  christos   return _bfd_elf_final_write_processing (abfd);
   1772  1.1  christos }
   1773  1.7  christos 
   1774  1.1  christos static bfd_boolean
   1776  1.1  christos is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
   1777  1.1  christos {
   1778  1.1  christos   bfd_byte buf[4 * 4];
   1779  1.1  christos 
   1780  1.1  christos   if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
   1781  1.1  christos     return FALSE;
   1782  1.1  christos 
   1783  1.1  christos   return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
   1784  1.1  christos 	  && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
   1785  1.1  christos 	  && bfd_get_32 (abfd, buf + 8) == MTCTR_11
   1786  1.1  christos 	  && bfd_get_32 (abfd, buf + 12) == BCTR);
   1787  1.1  christos }
   1788  1.1  christos 
   1789  1.1  christos static bfd_boolean
   1790  1.1  christos section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
   1791  1.1  christos {
   1792  1.1  christos   bfd_vma vma = *(bfd_vma *) ptr;
   1793  1.1  christos   return ((section->flags & SEC_ALLOC) != 0
   1794  1.1  christos 	  && section->vma <= vma
   1795  1.1  christos 	  && vma < section->vma + section->size);
   1796  1.1  christos }
   1797  1.1  christos 
   1798  1.1  christos static long
   1799  1.1  christos ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
   1800  1.1  christos 			      long dynsymcount, asymbol **dynsyms,
   1801  1.1  christos 			      asymbol **ret)
   1802  1.7  christos {
   1803  1.1  christos   bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
   1804  1.1  christos   asection *plt, *relplt, *dynamic, *glink;
   1805  1.9  christos   bfd_vma glink_vma = 0;
   1806  1.1  christos   bfd_vma resolv_vma = 0;
   1807  1.1  christos   bfd_vma stub_off;
   1808  1.1  christos   asymbol *s;
   1809  1.1  christos   arelent *p;
   1810  1.1  christos   size_t count, i, stub_delta;
   1811  1.1  christos   size_t size;
   1812  1.1  christos   char *names;
   1813  1.1  christos   bfd_byte buf[4];
   1814  1.1  christos 
   1815  1.1  christos   *ret = NULL;
   1816  1.1  christos 
   1817  1.1  christos   if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
   1818  1.1  christos     return 0;
   1819  1.1  christos 
   1820  1.1  christos   if (dynsymcount <= 0)
   1821  1.1  christos     return 0;
   1822  1.1  christos 
   1823  1.1  christos   relplt = bfd_get_section_by_name (abfd, ".rela.plt");
   1824  1.1  christos   if (relplt == NULL)
   1825  1.1  christos     return 0;
   1826  1.1  christos 
   1827  1.1  christos   plt = bfd_get_section_by_name (abfd, ".plt");
   1828  1.1  christos   if (plt == NULL)
   1829  1.1  christos     return 0;
   1830  1.1  christos 
   1831  1.1  christos   /* Call common code to handle old-style executable PLTs.  */
   1832  1.1  christos   if (elf_section_flags (plt) & SHF_EXECINSTR)
   1833  1.1  christos     return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
   1834  1.1  christos 					  dynsymcount, dynsyms, ret);
   1835  1.1  christos 
   1836  1.1  christos   /* If this object was prelinked, the prelinker stored the address
   1837  1.1  christos      of .glink at got[1].  If it wasn't prelinked, got[1] will be zero.  */
   1838  1.1  christos   dynamic = bfd_get_section_by_name (abfd, ".dynamic");
   1839  1.1  christos   if (dynamic != NULL)
   1840  1.1  christos     {
   1841  1.1  christos       bfd_byte *dynbuf, *extdyn, *extdynend;
   1842  1.1  christos       size_t extdynsize;
   1843  1.1  christos       void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
   1844  1.1  christos 
   1845  1.1  christos       if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
   1846  1.1  christos 	return -1;
   1847  1.1  christos 
   1848  1.1  christos       extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
   1849  1.1  christos       swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
   1850  1.1  christos 
   1851  1.1  christos       extdyn = dynbuf;
   1852  1.1  christos       extdynend = extdyn + dynamic->size;
   1853  1.1  christos       for (; extdyn < extdynend; extdyn += extdynsize)
   1854  1.1  christos 	{
   1855  1.1  christos 	  Elf_Internal_Dyn dyn;
   1856  1.1  christos 	  (*swap_dyn_in) (abfd, extdyn, &dyn);
   1857  1.1  christos 
   1858  1.1  christos 	  if (dyn.d_tag == DT_NULL)
   1859  1.1  christos 	    break;
   1860  1.1  christos 
   1861  1.1  christos 	  if (dyn.d_tag == DT_PPC_GOT)
   1862  1.1  christos 	    {
   1863  1.1  christos 	      unsigned int g_o_t = dyn.d_un.d_val;
   1864  1.1  christos 	      asection *got = bfd_get_section_by_name (abfd, ".got");
   1865  1.1  christos 	      if (got != NULL
   1866  1.1  christos 		  && bfd_get_section_contents (abfd, got, buf,
   1867  1.1  christos 					       g_o_t - got->vma + 4, 4))
   1868  1.1  christos 		glink_vma = bfd_get_32 (abfd, buf);
   1869  1.1  christos 	      break;
   1870  1.1  christos 	    }
   1871  1.1  christos 	}
   1872  1.1  christos       free (dynbuf);
   1873  1.1  christos     }
   1874  1.1  christos 
   1875  1.1  christos   /* Otherwise we read the first plt entry.  */
   1876  1.1  christos   if (glink_vma == 0)
   1877  1.1  christos     {
   1878  1.1  christos       if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
   1879  1.1  christos 	glink_vma = bfd_get_32 (abfd, buf);
   1880  1.1  christos     }
   1881  1.1  christos 
   1882  1.1  christos   if (glink_vma == 0)
   1883  1.1  christos     return 0;
   1884  1.1  christos 
   1885  1.1  christos   /* The .glink section usually does not survive the final
   1886  1.1  christos      link; search for the section (usually .text) where the
   1887  1.1  christos      glink stubs now reside.  */
   1888  1.1  christos   glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
   1889  1.1  christos   if (glink == NULL)
   1890  1.1  christos     return 0;
   1891  1.1  christos 
   1892  1.1  christos   /* Determine glink PLT resolver by reading the relative branch
   1893  1.1  christos      from the first glink stub.  */
   1894  1.1  christos   if (bfd_get_section_contents (abfd, glink, buf,
   1895  1.1  christos 				glink_vma - glink->vma, 4))
   1896  1.1  christos     {
   1897  1.1  christos       unsigned int insn = bfd_get_32 (abfd, buf);
   1898  1.1  christos 
   1899  1.1  christos       /* The first glink stub may either branch to the resolver ...  */
   1900  1.1  christos       insn ^= B;
   1901  1.1  christos       if ((insn & ~0x3fffffc) == 0)
   1902  1.1  christos 	resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
   1903  1.1  christos 
   1904  1.1  christos       /* ... or fall through a bunch of NOPs.  */
   1905  1.1  christos       else if ((insn ^ B ^ NOP) == 0)
   1906  1.1  christos 	for (i = 4;
   1907  1.1  christos 	     bfd_get_section_contents (abfd, glink, buf,
   1908  1.1  christos 				       glink_vma - glink->vma + i, 4);
   1909  1.1  christos 	     i += 4)
   1910  1.1  christos 	  if (bfd_get_32 (abfd, buf) != NOP)
   1911  1.1  christos 	    {
   1912  1.1  christos 	      resolv_vma = glink_vma + i;
   1913  1.1  christos 	      break;
   1914  1.1  christos 	    }
   1915  1.1  christos     }
   1916  1.7  christos 
   1917  1.7  christos   count = relplt->size / sizeof (Elf32_External_Rela);
   1918  1.7  christos   /* If the stubs are those for -shared/-pie then we might have
   1919  1.7  christos      multiple stubs for each plt entry.  If that is the case then
   1920  1.7  christos      there is no way to associate stubs with their plt entries short
   1921  1.7  christos      of figuring out the GOT pointer value used in the stub.
   1922  1.7  christos      The offsets tested here need to cover all possible values of
   1923  1.7  christos      GLINK_ENTRY_SIZE for other than __tls_get_addr_opt.  */
   1924  1.1  christos   stub_off = glink_vma - glink->vma;
   1925  1.1  christos   for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
   1926  1.1  christos     if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
   1927  1.1  christos       break;
   1928  1.1  christos   if (stub_delta > 32)
   1929  1.1  christos     return 0;
   1930  1.1  christos 
   1931  1.1  christos   slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
   1932  1.1  christos   if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
   1933  1.1  christos     return -1;
   1934  1.1  christos 
   1935  1.1  christos   size = count * sizeof (asymbol);
   1936  1.1  christos   p = relplt->relocation;
   1937  1.1  christos   for (i = 0; i < count; i++, p++)
   1938  1.1  christos     {
   1939  1.1  christos       size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
   1940  1.1  christos       if (p->addend != 0)
   1941  1.1  christos 	size += sizeof ("+0x") - 1 + 8;
   1942  1.1  christos     }
   1943  1.1  christos 
   1944  1.1  christos   size += sizeof (asymbol) + sizeof ("__glink");
   1945  1.1  christos 
   1946  1.1  christos   if (resolv_vma)
   1947  1.1  christos     size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
   1948  1.7  christos 
   1949  1.1  christos   s = *ret = bfd_malloc (size);
   1950  1.3  christos   if (s == NULL)
   1951  1.3  christos     return -1;
   1952  1.1  christos 
   1953  1.1  christos   stub_off = glink_vma - glink->vma;
   1954  1.1  christos   names = (char *) (s + count + 1 + (resolv_vma != 0));
   1955  1.7  christos   p = relplt->relocation + count - 1;
   1956  1.7  christos   for (i = 0; i < count; i++)
   1957  1.7  christos     {
   1958  1.1  christos       size_t len;
   1959  1.1  christos 
   1960  1.1  christos       stub_off -= stub_delta;
   1961  1.1  christos       if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
   1962  1.1  christos 	stub_off -= 32;
   1963  1.1  christos       *s = **p->sym_ptr_ptr;
   1964  1.1  christos       /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set.  Since
   1965  1.7  christos 	 we are defining a symbol, ensure one of them is set.  */
   1966  1.1  christos       if ((s->flags & BSF_LOCAL) == 0)
   1967  1.1  christos 	s->flags |= BSF_GLOBAL;
   1968  1.1  christos       s->flags |= BSF_SYNTHETIC;
   1969  1.1  christos       s->section = glink;
   1970  1.1  christos       s->value = stub_off;
   1971  1.1  christos       s->name = names;
   1972  1.1  christos       s->udata.p = NULL;
   1973  1.1  christos       len = strlen ((*p->sym_ptr_ptr)->name);
   1974  1.1  christos       memcpy (names, (*p->sym_ptr_ptr)->name, len);
   1975  1.1  christos       names += len;
   1976  1.1  christos       if (p->addend != 0)
   1977  1.1  christos 	{
   1978  1.1  christos 	  memcpy (names, "+0x", sizeof ("+0x") - 1);
   1979  1.1  christos 	  names += sizeof ("+0x") - 1;
   1980  1.1  christos 	  bfd_sprintf_vma (abfd, names, p->addend);
   1981  1.3  christos 	  names += strlen (names);
   1982  1.1  christos 	}
   1983  1.1  christos       memcpy (names, "@plt", sizeof ("@plt"));
   1984  1.1  christos       names += sizeof ("@plt");
   1985  1.1  christos       ++s;
   1986  1.1  christos       --p;
   1987  1.1  christos     }
   1988  1.1  christos 
   1989  1.1  christos   /* Add a symbol at the start of the glink branch table.  */
   1990  1.1  christos   memset (s, 0, sizeof *s);
   1991  1.1  christos   s->the_bfd = abfd;
   1992  1.1  christos   s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
   1993  1.1  christos   s->section = glink;
   1994  1.1  christos   s->value = glink_vma - glink->vma;
   1995  1.1  christos   s->name = names;
   1996  1.1  christos   memcpy (names, "__glink", sizeof ("__glink"));
   1997  1.1  christos   names += sizeof ("__glink");
   1998  1.1  christos   s++;
   1999  1.1  christos   count++;
   2000  1.1  christos 
   2001  1.1  christos   if (resolv_vma)
   2002  1.1  christos     {
   2003  1.1  christos       /* Add a symbol for the glink PLT resolver.  */
   2004  1.1  christos       memset (s, 0, sizeof *s);
   2005  1.1  christos       s->the_bfd = abfd;
   2006  1.1  christos       s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
   2007  1.1  christos       s->section = glink;
   2008  1.1  christos       s->value = resolv_vma - glink->vma;
   2009  1.1  christos       s->name = names;
   2010  1.1  christos       memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
   2011  1.1  christos       names += sizeof ("__glink_PLTresolve");
   2012  1.1  christos       s++;
   2013  1.1  christos       count++;
   2014  1.1  christos     }
   2015  1.1  christos 
   2016  1.1  christos   return count;
   2017  1.1  christos }
   2018  1.1  christos 
   2019  1.1  christos /* The following functions are specific to the ELF linker, while
   2021  1.1  christos    functions above are used generally.  They appear in this file more
   2022  1.1  christos    or less in the order in which they are called.  eg.
   2023  1.1  christos    ppc_elf_check_relocs is called early in the link process,
   2024  1.1  christos    ppc_elf_finish_dynamic_sections is one of the last functions
   2025  1.1  christos    called.  */
   2026  1.1  christos 
   2027  1.1  christos /* Track PLT entries needed for a given symbol.  We might need more
   2028  1.1  christos    than one glink entry per symbol when generating a pic binary.  */
   2029  1.1  christos struct plt_entry
   2030  1.1  christos {
   2031  1.1  christos   struct plt_entry *next;
   2032  1.1  christos 
   2033  1.1  christos   /* -fPIC uses multiple GOT sections, one per file, called ".got2".
   2034  1.1  christos      This field stores the offset into .got2 used to initialise the
   2035  1.1  christos      GOT pointer reg.  It will always be at least 32768.  (Current
   2036  1.1  christos      gcc always uses an offset of 32768, but ld -r will pack .got2
   2037  1.1  christos      sections together resulting in larger offsets).  */
   2038  1.1  christos   bfd_vma addend;
   2039  1.1  christos 
   2040  1.1  christos   /* The .got2 section.  */
   2041  1.1  christos   asection *sec;
   2042  1.1  christos 
   2043  1.1  christos   /* PLT refcount or offset.  */
   2044  1.1  christos   union
   2045  1.1  christos     {
   2046  1.1  christos       bfd_signed_vma refcount;
   2047  1.1  christos       bfd_vma offset;
   2048  1.7  christos     } plt;
   2049  1.7  christos 
   2050  1.7  christos   /* .glink stub offset.  */
   2051  1.1  christos   bfd_vma glink_offset;
   2052  1.1  christos };
   2053  1.1  christos 
   2054  1.1  christos /* Of those relocs that might be copied as dynamic relocs, this
   2055  1.1  christos    function selects those that must be copied when linking a shared
   2056  1.1  christos    library or PIE, even when the symbol is local.  */
   2057  1.1  christos 
   2058  1.1  christos static int
   2059  1.7  christos must_be_dyn_reloc (struct bfd_link_info *info,
   2060  1.7  christos 		   enum elf_ppc_reloc_type r_type)
   2061  1.7  christos {
   2062  1.7  christos   switch (r_type)
   2063  1.1  christos     {
   2064  1.1  christos     default:
   2065  1.1  christos       /* Only relative relocs can be resolved when the object load
   2066  1.1  christos 	 address isn't fixed.  DTPREL32 is excluded because the
   2067  1.1  christos 	 dynamic linker needs to differentiate global dynamic from
   2068  1.1  christos 	 local dynamic __tls_index pairs when PPC_OPT_TLS is set.  */
   2069  1.1  christos       return 1;
   2070  1.1  christos 
   2071  1.1  christos     case R_PPC_REL24:
   2072  1.1  christos     case R_PPC_REL14:
   2073  1.1  christos     case R_PPC_REL14_BRTAKEN:
   2074  1.1  christos     case R_PPC_REL14_BRNTAKEN:
   2075  1.1  christos     case R_PPC_REL32:
   2076  1.1  christos       return 0;
   2077  1.7  christos 
   2078  1.7  christos     case R_PPC_TPREL32:
   2079  1.7  christos     case R_PPC_TPREL16:
   2080  1.1  christos     case R_PPC_TPREL16_LO:
   2081  1.1  christos     case R_PPC_TPREL16_HI:
   2082  1.1  christos     case R_PPC_TPREL16_HA:
   2083  1.1  christos       /* These relocations are relative but in a shared library the
   2084  1.1  christos 	 linker doesn't know the thread pointer base.  */
   2085  1.1  christos       return bfd_link_dll (info);
   2086  1.1  christos     }
   2087  1.1  christos }
   2088  1.1  christos 
   2089  1.3  christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
   2090  1.3  christos    copying dynamic variables from a shared lib into an app's dynbss
   2091  1.3  christos    section, and instead use a dynamic relocation to point into the
   2092  1.3  christos    shared lib.  */
   2093  1.3  christos #define ELIMINATE_COPY_RELOCS 1
   2094  1.3  christos 
   2095  1.3  christos /* Used to track dynamic relocations for local symbols.  */
   2096  1.3  christos struct ppc_dyn_relocs
   2097  1.3  christos {
   2098  1.3  christos   struct ppc_dyn_relocs *next;
   2099  1.3  christos 
   2100  1.3  christos   /* The input section of the reloc.  */
   2101  1.3  christos   asection *sec;
   2102  1.3  christos 
   2103  1.3  christos   /* Total number of relocs copied for the input section.  */
   2104  1.1  christos   unsigned int count : 31;
   2105  1.1  christos 
   2106  1.1  christos   /* Whether this entry is for STT_GNU_IFUNC symbols.  */
   2107  1.1  christos   unsigned int ifunc : 1;
   2108  1.1  christos };
   2109  1.1  christos 
   2110  1.1  christos /* PPC ELF linker hash entry.  */
   2111  1.1  christos 
   2112  1.1  christos struct ppc_elf_link_hash_entry
   2113  1.1  christos {
   2114  1.1  christos   struct elf_link_hash_entry elf;
   2115  1.1  christos 
   2116  1.1  christos   /* If this symbol is used in the linker created sections, the processor
   2117  1.1  christos      specific backend uses this field to map the field into the offset
   2118  1.7  christos      from the beginning of the section.  */
   2119  1.7  christos   elf_linker_section_pointers_t *linker_section_pointer;
   2120  1.7  christos 
   2121  1.7  christos   /* Track dynamic relocs copied for this symbol.  */
   2122  1.7  christos   struct elf_dyn_relocs *dyn_relocs;
   2123  1.7  christos 
   2124  1.9  christos   /* Contexts in which symbol is used in the GOT.
   2125  1.7  christos      Bits are or'd into the mask as the corresponding relocs are
   2126  1.7  christos      encountered during check_relocs, with TLS_TLS being set when any
   2127  1.7  christos      of the other TLS bits are set.  tls_optimize clears bits when
   2128  1.7  christos      optimizing to indicate the corresponding GOT entry type is not
   2129  1.7  christos      needed.  If set, TLS_TLS is never cleared.  tls_optimize may also
   2130  1.7  christos      set TLS_GDIE when a GD reloc turns into an IE one.
   2131  1.7  christos      These flags are also kept for local symbols.  */
   2132  1.9  christos #define TLS_TLS		 1	/* Any TLS reloc.  */
   2133  1.7  christos #define TLS_GD		 2	/* GD reloc. */
   2134  1.7  christos #define TLS_LD		 4	/* LD reloc. */
   2135  1.7  christos #define TLS_TPREL	 8	/* TPREL reloc, => IE. */
   2136  1.7  christos #define TLS_DTPREL	16	/* DTPREL reloc, => LD. */
   2137  1.7  christos #define TLS_MARK	32	/* __tls_get_addr call marked. */
   2138  1.7  christos #define TLS_GDIE	64	/* GOT TPREL reloc resulting from GD->IE. */
   2139  1.7  christos   unsigned char tls_mask;
   2140  1.1  christos 
   2141  1.1  christos   /* The above field is also used to mark function symbols.  In which
   2142  1.1  christos      case TLS_TLS will be 0.  */
   2143  1.3  christos #define PLT_IFUNC	 2	/* STT_GNU_IFUNC.  */
   2144  1.3  christos #define PLT_KEEP	 4	/* inline plt call requires plt entry.  */
   2145  1.3  christos #define NON_GOT        256	/* local symbol plt, not stored.  */
   2146  1.3  christos 
   2147  1.3  christos   /* Nonzero if we have seen a small data relocation referring to this
   2148  1.1  christos      symbol.  */
   2149  1.1  christos   unsigned char has_sda_refs : 1;
   2150  1.1  christos 
   2151  1.1  christos   /* Flag use of given relocations.  */
   2152  1.1  christos   unsigned char has_addr16_ha : 1;
   2153  1.1  christos   unsigned char has_addr16_lo : 1;
   2154  1.1  christos };
   2155  1.1  christos 
   2156  1.1  christos #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
   2157  1.1  christos 
   2158  1.3  christos /* PPC ELF linker hash table.  */
   2159  1.3  christos 
   2160  1.3  christos struct ppc_elf_link_hash_table
   2161  1.1  christos {
   2162  1.1  christos   struct elf_link_hash_table elf;
   2163  1.1  christos 
   2164  1.1  christos   /* Various options passed from the linker.  */
   2165  1.1  christos   struct ppc_elf_params *params;
   2166  1.1  christos 
   2167  1.1  christos   /* Short-cuts to get to dynamic linker sections.  */
   2168  1.7  christos   asection *glink;
   2169  1.7  christos   asection *dynsbss;
   2170  1.1  christos   asection *relsbss;
   2171  1.1  christos   elf_linker_section_t sdata[2];
   2172  1.1  christos   asection *sbss;
   2173  1.1  christos   asection *glink_eh_frame;
   2174  1.1  christos   asection *pltlocal;
   2175  1.1  christos   asection *relpltlocal;
   2176  1.1  christos 
   2177  1.1  christos   /* The (unloaded but important) .rela.plt.unloaded on VxWorks.  */
   2178  1.1  christos   asection *srelplt2;
   2179  1.1  christos 
   2180  1.1  christos   /* Shortcut to __tls_get_addr.  */
   2181  1.1  christos   struct elf_link_hash_entry *tls_get_addr;
   2182  1.1  christos 
   2183  1.1  christos   /* The bfd that forced an old-style PLT.  */
   2184  1.1  christos   bfd *old_bfd;
   2185  1.1  christos 
   2186  1.1  christos   /* TLS local dynamic got entry handling.  */
   2187  1.1  christos   union {
   2188  1.1  christos     bfd_signed_vma refcount;
   2189  1.1  christos     bfd_vma offset;
   2190  1.1  christos   } tlsld_got;
   2191  1.1  christos 
   2192  1.1  christos   /* Offset of branch table to PltResolve function in glink.  */
   2193  1.1  christos   bfd_vma glink_pltresolve;
   2194  1.1  christos 
   2195  1.1  christos   /* Size of reserved GOT entries.  */
   2196  1.1  christos   unsigned int got_header_size;
   2197  1.1  christos   /* Non-zero if allocating the header left a gap.  */
   2198  1.1  christos   unsigned int got_gap;
   2199  1.1  christos 
   2200  1.7  christos   /* The type of PLT we have chosen to use.  */
   2201  1.7  christos   enum ppc_elf_plt_type plt_type;
   2202  1.7  christos 
   2203  1.7  christos   /* True if the target system is VxWorks.  */
   2204  1.7  christos   unsigned int is_vxworks:1;
   2205  1.7  christos 
   2206  1.7  christos   /* Whether there exist local gnu indirect function resolvers,
   2207  1.7  christos      referenced by dynamic relocations.  */
   2208  1.7  christos   unsigned int local_ifunc_resolver:1;
   2209  1.7  christos   unsigned int maybe_local_ifunc_resolver:1;
   2210  1.7  christos 
   2211  1.1  christos   /* Set if tls optimization is enabled.  */
   2212  1.1  christos   unsigned int do_tls_opt:1;
   2213  1.1  christos 
   2214  1.1  christos   /* Set if inline plt calls should be converted to direct calls.  */
   2215  1.1  christos   unsigned int can_convert_all_inline_plt:1;
   2216  1.1  christos 
   2217  1.1  christos   /* The size of PLT entries.  */
   2218  1.1  christos   int plt_entry_size;
   2219  1.1  christos   /* The distance between adjacent PLT slots.  */
   2220  1.1  christos   int plt_slot_size;
   2221  1.1  christos   /* The size of the first PLT entry.  */
   2222  1.1  christos   int plt_initial_entry_size;
   2223  1.1  christos 
   2224  1.1  christos   /* Small local sym cache.  */
   2225  1.1  christos   struct sym_cache sym_cache;
   2226  1.1  christos };
   2227  1.1  christos 
   2228  1.9  christos /* Rename some of the generic section flags to better document how they
   2229  1.9  christos    are used for ppc32.  The flags are only valid for ppc32 elf objects.  */
   2230  1.9  christos 
   2231  1.1  christos /* Nonzero if this section has TLS related relocations.  */
   2232  1.7  christos #define has_tls_reloc sec_flg0
   2233  1.7  christos 
   2234  1.7  christos /* Nonzero if this section has a call to __tls_get_addr lacking marker
   2235  1.1  christos    relocs.  */
   2236  1.1  christos #define nomark_tls_get_addr sec_flg1
   2237  1.1  christos 
   2238  1.1  christos   /* Flag set when PLTCALL relocs are detected.  */
   2239  1.1  christos #define has_pltcall sec_flg2
   2240  1.1  christos 
   2241  1.1  christos /* Get the PPC ELF linker hash table from a link_info structure.  */
   2242  1.1  christos 
   2243  1.1  christos #define ppc_elf_hash_table(p) \
   2244  1.1  christos   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
   2245  1.1  christos   == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
   2246  1.1  christos 
   2247  1.1  christos /* Create an entry in a PPC ELF linker hash table.  */
   2248  1.1  christos 
   2249  1.1  christos static struct bfd_hash_entry *
   2250  1.1  christos ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
   2251  1.1  christos 			   struct bfd_hash_table *table,
   2252  1.1  christos 			   const char *string)
   2253  1.1  christos {
   2254  1.1  christos   /* Allocate the structure if it has not already been allocated by a
   2255  1.1  christos      subclass.  */
   2256  1.1  christos   if (entry == NULL)
   2257  1.1  christos     {
   2258  1.1  christos       entry = bfd_hash_allocate (table,
   2259  1.1  christos 				 sizeof (struct ppc_elf_link_hash_entry));
   2260  1.1  christos       if (entry == NULL)
   2261  1.1  christos 	return entry;
   2262  1.1  christos     }
   2263  1.1  christos 
   2264  1.1  christos   /* Call the allocation method of the superclass.  */
   2265  1.1  christos   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
   2266  1.1  christos   if (entry != NULL)
   2267  1.1  christos     {
   2268  1.1  christos       ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
   2269  1.1  christos       ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
   2270  1.1  christos       ppc_elf_hash_entry (entry)->tls_mask = 0;
   2271  1.1  christos       ppc_elf_hash_entry (entry)->has_sda_refs = 0;
   2272  1.1  christos     }
   2273  1.1  christos 
   2274  1.1  christos   return entry;
   2275  1.1  christos }
   2276  1.1  christos 
   2277  1.7  christos /* Create a PPC ELF linker hash table.  */
   2278  1.7  christos 
   2279  1.1  christos static struct bfd_link_hash_table *
   2280  1.1  christos ppc_elf_link_hash_table_create (bfd *abfd)
   2281  1.1  christos {
   2282  1.1  christos   struct ppc_elf_link_hash_table *ret;
   2283  1.1  christos   static struct ppc_elf_params default_params
   2284  1.1  christos     = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
   2285  1.1  christos 
   2286  1.1  christos   ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
   2287  1.1  christos   if (ret == NULL)
   2288  1.1  christos     return NULL;
   2289  1.1  christos 
   2290  1.1  christos   if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
   2291  1.1  christos 				      ppc_elf_link_hash_newfunc,
   2292  1.1  christos 				      sizeof (struct ppc_elf_link_hash_entry),
   2293  1.1  christos 				      PPC32_ELF_DATA))
   2294  1.1  christos     {
   2295  1.1  christos       free (ret);
   2296  1.1  christos       return NULL;
   2297  1.1  christos     }
   2298  1.3  christos 
   2299  1.3  christos   ret->elf.init_plt_refcount.refcount = 0;
   2300  1.1  christos   ret->elf.init_plt_refcount.glist = NULL;
   2301  1.1  christos   ret->elf.init_plt_offset.offset = 0;
   2302  1.1  christos   ret->elf.init_plt_offset.glist = NULL;
   2303  1.1  christos 
   2304  1.1  christos   ret->params = &default_params;
   2305  1.1  christos 
   2306  1.1  christos   ret->sdata[0].name = ".sdata";
   2307  1.1  christos   ret->sdata[0].sym_name = "_SDA_BASE_";
   2308  1.1  christos   ret->sdata[0].bss_name = ".sbss";
   2309  1.1  christos 
   2310  1.1  christos   ret->sdata[1].name = ".sdata2";
   2311  1.1  christos   ret->sdata[1].sym_name = "_SDA2_BASE_";
   2312  1.1  christos   ret->sdata[1].bss_name = ".sbss2";
   2313  1.1  christos 
   2314  1.1  christos   ret->plt_entry_size = 12;
   2315  1.3  christos   ret->plt_slot_size = 8;
   2316  1.3  christos   ret->plt_initial_entry_size = 72;
   2317  1.3  christos 
   2318  1.3  christos   return &ret->elf.root;
   2319  1.3  christos }
   2320  1.3  christos 
   2321  1.3  christos /* Hook linker params into hash table.  */
   2322  1.3  christos 
   2323  1.3  christos void
   2324  1.7  christos ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
   2325  1.3  christos {
   2326  1.3  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   2327  1.1  christos 
   2328  1.1  christos   if (htab)
   2329  1.1  christos     htab->params = params;
   2330  1.1  christos   params->pagesize_p2 = bfd_log2 (params->pagesize);
   2331  1.1  christos }
   2332  1.1  christos 
   2333  1.1  christos /* Create .got and the related sections.  */
   2334  1.1  christos 
   2335  1.1  christos static bfd_boolean
   2336  1.1  christos ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
   2337  1.1  christos {
   2338  1.7  christos   struct ppc_elf_link_hash_table *htab;
   2339  1.1  christos 
   2340  1.1  christos   if (!_bfd_elf_create_got_section (abfd, info))
   2341  1.1  christos     return FALSE;
   2342  1.7  christos 
   2343  1.7  christos   htab = ppc_elf_hash_table (info);
   2344  1.9  christos   if (!htab->is_vxworks)
   2345  1.1  christos     {
   2346  1.1  christos       /* The powerpc .got has a blrl instruction in it.  Mark it
   2347  1.1  christos 	 executable.  */
   2348  1.1  christos       flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
   2349  1.1  christos 			| SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2350  1.1  christos       if (!bfd_set_section_flags (htab->elf.sgot, flags))
   2351  1.3  christos 	return FALSE;
   2352  1.3  christos     }
   2353  1.3  christos 
   2354  1.3  christos   return TRUE;
   2355  1.3  christos }
   2356  1.3  christos 
   2357  1.3  christos /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
   2358  1.3  christos    R_PPC_EMB_SDA2I16 pointers.  These sections become part of .sdata
   2359  1.3  christos    and .sdata2.  Create _SDA_BASE_ and _SDA2_BASE too.  */
   2360  1.3  christos 
   2361  1.3  christos static bfd_boolean
   2362  1.3  christos ppc_elf_create_linker_section (bfd *abfd,
   2363  1.3  christos 			       struct bfd_link_info *info,
   2364  1.3  christos 			       flagword flags,
   2365  1.3  christos 			       elf_linker_section_t *lsect)
   2366  1.3  christos {
   2367  1.3  christos   asection *s;
   2368  1.3  christos 
   2369  1.3  christos   flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
   2370  1.3  christos 	    | SEC_LINKER_CREATED);
   2371  1.3  christos 
   2372  1.3  christos   s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
   2373  1.3  christos   if (s == NULL)
   2374  1.3  christos     return FALSE;
   2375  1.3  christos   lsect->section = s;
   2376  1.3  christos 
   2377  1.3  christos   /* Define the sym on the first section of this name.  */
   2378  1.3  christos   s = bfd_get_section_by_name (abfd, lsect->name);
   2379  1.3  christos 
   2380  1.3  christos   lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
   2381  1.1  christos   if (lsect->sym == NULL)
   2382  1.1  christos     return FALSE;
   2383  1.1  christos   lsect->sym->root.u.def.value = 0x8000;
   2384  1.1  christos   return TRUE;
   2385  1.1  christos }
   2386  1.1  christos 
   2387  1.7  christos static bfd_boolean
   2388  1.1  christos ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
   2389  1.1  christos {
   2390  1.1  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   2391  1.1  christos   asection *s;
   2392  1.1  christos   flagword flags;
   2393  1.7  christos   int p2align;
   2394  1.7  christos 
   2395  1.7  christos   flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
   2396  1.1  christos 	   | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2397  1.9  christos   s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
   2398  1.1  christos   htab->glink = s;
   2399  1.1  christos   p2align = htab->params->ppc476_workaround ? 6 : 4;
   2400  1.1  christos   if (p2align < htab->params->plt_stub_align)
   2401  1.1  christos     p2align = htab->params->plt_stub_align;
   2402  1.1  christos   if (s == NULL
   2403  1.1  christos       || !bfd_set_section_alignment (s, p2align))
   2404  1.1  christos     return FALSE;
   2405  1.1  christos 
   2406  1.1  christos   if (!info->no_ld_generated_unwind_info)
   2407  1.9  christos     {
   2408  1.1  christos       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2409  1.1  christos 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2410  1.1  christos       s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
   2411  1.1  christos       htab->glink_eh_frame = s;
   2412  1.1  christos       if (s == NULL
   2413  1.7  christos 	  || !bfd_set_section_alignment (s, 2))
   2414  1.1  christos 	return FALSE;
   2415  1.9  christos     }
   2416  1.1  christos 
   2417  1.1  christos   flags = SEC_ALLOC | SEC_LINKER_CREATED;
   2418  1.1  christos   s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
   2419  1.1  christos   htab->elf.iplt = s;
   2420  1.1  christos   if (s == NULL
   2421  1.7  christos       || !bfd_set_section_alignment (s, 4))
   2422  1.1  christos     return FALSE;
   2423  1.9  christos 
   2424  1.1  christos   flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2425  1.3  christos 	   | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2426  1.7  christos   s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
   2427  1.7  christos   htab->elf.irelplt = s;
   2428  1.7  christos   if (s == NULL
   2429  1.7  christos       || ! bfd_set_section_alignment (s, 2))
   2430  1.7  christos     return FALSE;
   2431  1.7  christos 
   2432  1.9  christos   /* Local plt entries.  */
   2433  1.7  christos   flags = (SEC_ALLOC | SEC_LOAD
   2434  1.7  christos 	   | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2435  1.7  christos   htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt",
   2436  1.7  christos 						       flags);
   2437  1.7  christos   if (htab->pltlocal == NULL
   2438  1.7  christos       || !bfd_set_section_alignment (htab->pltlocal, 2))
   2439  1.7  christos     return FALSE;
   2440  1.7  christos 
   2441  1.7  christos   if (bfd_link_pic (info))
   2442  1.9  christos     {
   2443  1.7  christos       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
   2444  1.7  christos 	       | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2445  1.7  christos       htab->relpltlocal
   2446  1.3  christos 	= bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags);
   2447  1.3  christos       if (htab->relpltlocal == NULL
   2448  1.3  christos 	  || !bfd_set_section_alignment (htab->relpltlocal, 2))
   2449  1.3  christos 	return FALSE;
   2450  1.3  christos     }
   2451  1.3  christos 
   2452  1.3  christos   if (!ppc_elf_create_linker_section (abfd, info, 0,
   2453  1.3  christos 				      &htab->sdata[0]))
   2454  1.1  christos     return FALSE;
   2455  1.1  christos 
   2456  1.1  christos   if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
   2457  1.1  christos 				      &htab->sdata[1]))
   2458  1.1  christos     return FALSE;
   2459  1.1  christos 
   2460  1.1  christos   return TRUE;
   2461  1.1  christos }
   2462  1.1  christos 
   2463  1.1  christos /* We have to create .dynsbss and .rela.sbss here so that they get mapped
   2464  1.1  christos    to output sections (just like _bfd_elf_create_dynamic_sections has
   2465  1.1  christos    to create .dynbss and .rela.bss).  */
   2466  1.1  christos 
   2467  1.1  christos static bfd_boolean
   2468  1.1  christos ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
   2469  1.1  christos {
   2470  1.7  christos   struct ppc_elf_link_hash_table *htab;
   2471  1.1  christos   asection *s;
   2472  1.1  christos   flagword flags;
   2473  1.1  christos 
   2474  1.1  christos   htab = ppc_elf_hash_table (info);
   2475  1.1  christos 
   2476  1.1  christos   if (htab->elf.sgot == NULL
   2477  1.1  christos       && !ppc_elf_create_got (abfd, info))
   2478  1.1  christos     return FALSE;
   2479  1.1  christos 
   2480  1.1  christos   if (!_bfd_elf_create_dynamic_sections (abfd, info))
   2481  1.1  christos     return FALSE;
   2482  1.1  christos 
   2483  1.1  christos   if (htab->glink == NULL
   2484  1.1  christos       && !ppc_elf_create_glink (abfd, info))
   2485  1.1  christos     return FALSE;
   2486  1.1  christos 
   2487  1.3  christos   s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
   2488  1.1  christos 					  SEC_ALLOC | SEC_LINKER_CREATED);
   2489  1.1  christos   htab->dynsbss = s;
   2490  1.1  christos   if (s == NULL)
   2491  1.1  christos     return FALSE;
   2492  1.1  christos 
   2493  1.1  christos   if (! bfd_link_pic (info))
   2494  1.9  christos     {
   2495  1.1  christos       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2496  1.1  christos 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2497  1.1  christos       s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
   2498  1.1  christos       htab->relsbss = s;
   2499  1.1  christos       if (s == NULL
   2500  1.1  christos 	  || !bfd_set_section_alignment (s, 2))
   2501  1.1  christos 	return FALSE;
   2502  1.7  christos     }
   2503  1.1  christos 
   2504  1.1  christos   if (htab->is_vxworks
   2505  1.1  christos       && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
   2506  1.1  christos     return FALSE;
   2507  1.9  christos 
   2508  1.1  christos   s = htab->elf.splt;
   2509  1.1  christos   flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
   2510  1.1  christos   if (htab->plt_type == PLT_VXWORKS)
   2511  1.1  christos     /* The VxWorks PLT is a loaded section with contents.  */
   2512  1.1  christos     flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
   2513  1.1  christos   return bfd_set_section_flags (s, flags);
   2514  1.1  christos }
   2515  1.1  christos 
   2516  1.1  christos /* Copy the extra info we tack onto an elf_link_hash_entry.  */
   2517  1.1  christos 
   2518  1.1  christos static void
   2519  1.1  christos ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
   2520  1.1  christos 			      struct elf_link_hash_entry *dir,
   2521  1.1  christos 			      struct elf_link_hash_entry *ind)
   2522  1.1  christos {
   2523  1.1  christos   struct ppc_elf_link_hash_entry *edir, *eind;
   2524  1.1  christos 
   2525  1.7  christos   edir = (struct ppc_elf_link_hash_entry *) dir;
   2526  1.7  christos   eind = (struct ppc_elf_link_hash_entry *) ind;
   2527  1.1  christos 
   2528  1.1  christos   edir->tls_mask |= eind->tls_mask;
   2529  1.7  christos   edir->has_sda_refs |= eind->has_sda_refs;
   2530  1.1  christos 
   2531  1.1  christos   if (edir->elf.versioned != versioned_hidden)
   2532  1.1  christos     edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
   2533  1.7  christos   edir->elf.ref_regular |= eind->elf.ref_regular;
   2534  1.7  christos   edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
   2535  1.7  christos   edir->elf.non_got_ref |= eind->elf.non_got_ref;
   2536  1.7  christos   edir->elf.needs_plt |= eind->elf.needs_plt;
   2537  1.1  christos   edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
   2538  1.1  christos 
   2539  1.1  christos   /* If we were called to copy over info for a weak sym, that's all.  */
   2540  1.1  christos   if (eind->elf.root.type != bfd_link_hash_indirect)
   2541  1.1  christos     return;
   2542  1.1  christos 
   2543  1.1  christos   if (eind->dyn_relocs != NULL)
   2544  1.1  christos     {
   2545  1.1  christos       if (edir->dyn_relocs != NULL)
   2546  1.1  christos 	{
   2547  1.1  christos 	  struct elf_dyn_relocs **pp;
   2548  1.1  christos 	  struct elf_dyn_relocs *p;
   2549  1.1  christos 
   2550  1.1  christos 	  /* Add reloc counts against the indirect sym to the direct sym
   2551  1.1  christos 	     list.  Merge any entries against the same section.  */
   2552  1.1  christos 	  for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
   2553  1.1  christos 	    {
   2554  1.1  christos 	      struct elf_dyn_relocs *q;
   2555  1.1  christos 
   2556  1.1  christos 	      for (q = edir->dyn_relocs; q != NULL; q = q->next)
   2557  1.1  christos 		if (q->sec == p->sec)
   2558  1.1  christos 		  {
   2559  1.1  christos 		    q->pc_count += p->pc_count;
   2560  1.1  christos 		    q->count += p->count;
   2561  1.1  christos 		    *pp = p->next;
   2562  1.1  christos 		    break;
   2563  1.1  christos 		  }
   2564  1.1  christos 	      if (q == NULL)
   2565  1.1  christos 		pp = &p->next;
   2566  1.1  christos 	    }
   2567  1.1  christos 	  *pp = edir->dyn_relocs;
   2568  1.1  christos 	}
   2569  1.1  christos 
   2570  1.1  christos       edir->dyn_relocs = eind->dyn_relocs;
   2571  1.1  christos       eind->dyn_relocs = NULL;
   2572  1.1  christos     }
   2573  1.1  christos 
   2574  1.1  christos   /* Copy over the GOT refcount entries that we may have already seen to
   2575  1.1  christos      the symbol which just became indirect.  */
   2576  1.1  christos   edir->elf.got.refcount += eind->elf.got.refcount;
   2577  1.1  christos   eind->elf.got.refcount = 0;
   2578  1.1  christos 
   2579  1.1  christos   /* And plt entries.  */
   2580  1.1  christos   if (eind->elf.plt.plist != NULL)
   2581  1.1  christos     {
   2582  1.1  christos       if (edir->elf.plt.plist != NULL)
   2583  1.1  christos 	{
   2584  1.1  christos 	  struct plt_entry **entp;
   2585  1.1  christos 	  struct plt_entry *ent;
   2586  1.1  christos 
   2587  1.1  christos 	  for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
   2588  1.1  christos 	    {
   2589  1.1  christos 	      struct plt_entry *dent;
   2590  1.1  christos 
   2591  1.1  christos 	      for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
   2592  1.1  christos 		if (dent->sec == ent->sec && dent->addend == ent->addend)
   2593  1.1  christos 		  {
   2594  1.1  christos 		    dent->plt.refcount += ent->plt.refcount;
   2595  1.1  christos 		    *entp = ent->next;
   2596  1.1  christos 		    break;
   2597  1.1  christos 		  }
   2598  1.1  christos 	      if (dent == NULL)
   2599  1.1  christos 		entp = &ent->next;
   2600  1.1  christos 	    }
   2601  1.1  christos 	  *entp = edir->elf.plt.plist;
   2602  1.1  christos 	}
   2603  1.1  christos 
   2604  1.1  christos       edir->elf.plt.plist = eind->elf.plt.plist;
   2605  1.1  christos       eind->elf.plt.plist = NULL;
   2606  1.1  christos     }
   2607  1.1  christos 
   2608  1.1  christos   if (eind->elf.dynindx != -1)
   2609  1.1  christos     {
   2610  1.1  christos       if (edir->elf.dynindx != -1)
   2611  1.1  christos 	_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
   2612  1.1  christos 				edir->elf.dynstr_index);
   2613  1.1  christos       edir->elf.dynindx = eind->elf.dynindx;
   2614  1.1  christos       edir->elf.dynstr_index = eind->elf.dynstr_index;
   2615  1.1  christos       eind->elf.dynindx = -1;
   2616  1.1  christos       eind->elf.dynstr_index = 0;
   2617  1.1  christos     }
   2618  1.1  christos }
   2619  1.1  christos 
   2620  1.1  christos /* Hook called by the linker routine which adds symbols from an object
   2621  1.1  christos    file.  We use it to put .comm items in .sbss, and not .bss.  */
   2622  1.1  christos 
   2623  1.1  christos static bfd_boolean
   2624  1.1  christos ppc_elf_add_symbol_hook (bfd *abfd,
   2625  1.1  christos 			 struct bfd_link_info *info,
   2626  1.1  christos 			 Elf_Internal_Sym *sym,
   2627  1.3  christos 			 const char **namep ATTRIBUTE_UNUSED,
   2628  1.1  christos 			 flagword *flagsp ATTRIBUTE_UNUSED,
   2629  1.1  christos 			 asection **secp,
   2630  1.1  christos 			 bfd_vma *valp)
   2631  1.1  christos {
   2632  1.1  christos   if (sym->st_shndx == SHN_COMMON
   2633  1.1  christos       && !bfd_link_relocatable (info)
   2634  1.1  christos       && is_ppc_elf (info->output_bfd)
   2635  1.1  christos       && sym->st_size <= elf_gp_size (abfd))
   2636  1.1  christos     {
   2637  1.1  christos       /* Common symbols less than or equal to -G nn bytes are automatically
   2638  1.1  christos 	 put into .sbss.  */
   2639  1.1  christos       struct ppc_elf_link_hash_table *htab;
   2640  1.1  christos 
   2641  1.1  christos       htab = ppc_elf_hash_table (info);
   2642  1.1  christos       if (htab->sbss == NULL)
   2643  1.1  christos 	{
   2644  1.1  christos 	  flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
   2645  1.1  christos 
   2646  1.1  christos 	  if (!htab->elf.dynobj)
   2647  1.1  christos 	    htab->elf.dynobj = abfd;
   2648  1.1  christos 
   2649  1.1  christos 	  htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
   2650  1.1  christos 							   ".sbss",
   2651  1.1  christos 							   flags);
   2652  1.1  christos 	  if (htab->sbss == NULL)
   2653  1.1  christos 	    return FALSE;
   2654  1.1  christos 	}
   2655  1.1  christos 
   2656  1.1  christos       *secp = htab->sbss;
   2657  1.1  christos       *valp = sym->st_size;
   2658  1.1  christos     }
   2659  1.1  christos 
   2660  1.1  christos   return TRUE;
   2661  1.1  christos }
   2662  1.1  christos 
   2663  1.1  christos /* Find a linker generated pointer with a given addend and type.  */
   2665  1.1  christos 
   2666  1.1  christos static elf_linker_section_pointers_t *
   2667  1.1  christos elf_find_pointer_linker_section
   2668  1.1  christos   (elf_linker_section_pointers_t *linker_pointers,
   2669  1.1  christos    bfd_vma addend,
   2670  1.1  christos    elf_linker_section_t *lsect)
   2671  1.1  christos {
   2672  1.1  christos   for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
   2673  1.1  christos     if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
   2674  1.1  christos       return linker_pointers;
   2675  1.3  christos 
   2676  1.3  christos   return NULL;
   2677  1.3  christos }
   2678  1.3  christos 
   2679  1.1  christos /* Allocate a pointer to live in a linker created section.  */
   2680  1.1  christos 
   2681  1.1  christos static bfd_boolean
   2682  1.1  christos elf_allocate_pointer_linker_section (bfd *abfd,
   2683  1.1  christos 				     elf_linker_section_t *lsect,
   2684  1.1  christos 				     struct elf_link_hash_entry *h,
   2685  1.1  christos 				     const Elf_Internal_Rela *rel)
   2686  1.1  christos {
   2687  1.1  christos   elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
   2688  1.1  christos   elf_linker_section_pointers_t *linker_section_ptr;
   2689  1.1  christos   unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
   2690  1.1  christos   bfd_size_type amt;
   2691  1.1  christos 
   2692  1.1  christos   BFD_ASSERT (lsect != NULL);
   2693  1.1  christos 
   2694  1.1  christos   /* Is this a global symbol?  */
   2695  1.1  christos   if (h != NULL)
   2696  1.1  christos     {
   2697  1.1  christos       struct ppc_elf_link_hash_entry *eh;
   2698  1.1  christos 
   2699  1.1  christos       /* Has this symbol already been allocated?  If so, our work is done.  */
   2700  1.1  christos       eh = (struct ppc_elf_link_hash_entry *) h;
   2701  1.1  christos       if (elf_find_pointer_linker_section (eh->linker_section_pointer,
   2702  1.1  christos 					   rel->r_addend,
   2703  1.1  christos 					   lsect))
   2704  1.1  christos 	return TRUE;
   2705  1.1  christos 
   2706  1.1  christos       ptr_linker_section_ptr = &eh->linker_section_pointer;
   2707  1.1  christos     }
   2708  1.1  christos   else
   2709  1.1  christos     {
   2710  1.1  christos       BFD_ASSERT (is_ppc_elf (abfd));
   2711  1.1  christos 
   2712  1.1  christos       /* Allocation of a pointer to a local symbol.  */
   2713  1.1  christos       elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
   2714  1.1  christos 
   2715  1.1  christos       /* Allocate a table to hold the local symbols if first time.  */
   2716  1.1  christos       if (!ptr)
   2717  1.1  christos 	{
   2718  1.1  christos 	  unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
   2719  1.1  christos 
   2720  1.1  christos 	  amt = num_symbols;
   2721  1.1  christos 	  amt *= sizeof (elf_linker_section_pointers_t *);
   2722  1.1  christos 	  ptr = bfd_zalloc (abfd, amt);
   2723  1.1  christos 
   2724  1.1  christos 	  if (!ptr)
   2725  1.1  christos 	    return FALSE;
   2726  1.1  christos 
   2727  1.1  christos 	  elf_local_ptr_offsets (abfd) = ptr;
   2728  1.1  christos 	}
   2729  1.1  christos 
   2730  1.1  christos       /* Has this symbol already been allocated?  If so, our work is done.  */
   2731  1.1  christos       if (elf_find_pointer_linker_section (ptr[r_symndx],
   2732  1.1  christos 					   rel->r_addend,
   2733  1.1  christos 					   lsect))
   2734  1.1  christos 	return TRUE;
   2735  1.1  christos 
   2736  1.1  christos       ptr_linker_section_ptr = &ptr[r_symndx];
   2737  1.1  christos     }
   2738  1.1  christos 
   2739  1.1  christos   /* Allocate space for a pointer in the linker section, and allocate
   2740  1.1  christos      a new pointer record from internal memory.  */
   2741  1.1  christos   BFD_ASSERT (ptr_linker_section_ptr != NULL);
   2742  1.1  christos   amt = sizeof (elf_linker_section_pointers_t);
   2743  1.1  christos   linker_section_ptr = bfd_alloc (abfd, amt);
   2744  1.1  christos 
   2745  1.1  christos   if (!linker_section_ptr)
   2746  1.9  christos     return FALSE;
   2747  1.3  christos 
   2748  1.1  christos   linker_section_ptr->next = *ptr_linker_section_ptr;
   2749  1.1  christos   linker_section_ptr->addend = rel->r_addend;
   2750  1.1  christos   linker_section_ptr->lsect = lsect;
   2751  1.1  christos   *ptr_linker_section_ptr = linker_section_ptr;
   2752  1.1  christos 
   2753  1.1  christos   if (!bfd_set_section_alignment (lsect->section, 2))
   2754  1.1  christos     return FALSE;
   2755  1.1  christos   linker_section_ptr->offset = lsect->section->size;
   2756  1.1  christos   lsect->section->size += 4;
   2757  1.1  christos 
   2758  1.1  christos #ifdef DEBUG
   2759  1.1  christos   fprintf (stderr,
   2760  1.1  christos 	   "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
   2761  1.1  christos 	   lsect->name, (long) linker_section_ptr->offset,
   2762  1.1  christos 	   (long) lsect->section->size);
   2763  1.1  christos #endif
   2764  1.1  christos 
   2765  1.1  christos   return TRUE;
   2766  1.1  christos }
   2767  1.1  christos 
   2768  1.1  christos static struct plt_entry **
   2769  1.7  christos update_local_sym_info (bfd *abfd,
   2770  1.1  christos 		       Elf_Internal_Shdr *symtab_hdr,
   2771  1.1  christos 		       unsigned long r_symndx,
   2772  1.1  christos 		       int tls_type)
   2773  1.1  christos {
   2774  1.1  christos   bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
   2775  1.1  christos   struct plt_entry **local_plt;
   2776  1.1  christos   unsigned char *local_got_tls_masks;
   2777  1.1  christos 
   2778  1.1  christos   if (local_got_refcounts == NULL)
   2779  1.1  christos     {
   2780  1.1  christos       bfd_size_type size = symtab_hdr->sh_info;
   2781  1.1  christos 
   2782  1.1  christos       size *= (sizeof (*local_got_refcounts)
   2783  1.1  christos 	       + sizeof (*local_plt)
   2784  1.1  christos 	       + sizeof (*local_got_tls_masks));
   2785  1.7  christos       local_got_refcounts = bfd_zalloc (abfd, size);
   2786  1.7  christos       if (local_got_refcounts == NULL)
   2787  1.7  christos 	return NULL;
   2788  1.1  christos       elf_local_got_refcounts (abfd) = local_got_refcounts;
   2789  1.1  christos     }
   2790  1.1  christos 
   2791  1.1  christos   local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
   2792  1.1  christos   local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
   2793  1.1  christos   local_got_tls_masks[r_symndx] |= tls_type & 0xff;
   2794  1.1  christos   if ((tls_type & NON_GOT) == 0)
   2795  1.1  christos     local_got_refcounts[r_symndx] += 1;
   2796  1.1  christos   return local_plt + r_symndx;
   2797  1.1  christos }
   2798  1.1  christos 
   2799  1.1  christos static bfd_boolean
   2800  1.1  christos update_plt_info (bfd *abfd, struct plt_entry **plist,
   2801  1.1  christos 		 asection *sec, bfd_vma addend)
   2802  1.1  christos {
   2803  1.1  christos   struct plt_entry *ent;
   2804  1.1  christos 
   2805  1.1  christos   if (addend < 32768)
   2806  1.1  christos     sec = NULL;
   2807  1.1  christos   for (ent = *plist; ent != NULL; ent = ent->next)
   2808  1.1  christos     if (ent->sec == sec && ent->addend == addend)
   2809  1.1  christos       break;
   2810  1.1  christos   if (ent == NULL)
   2811  1.1  christos     {
   2812  1.1  christos       bfd_size_type amt = sizeof (*ent);
   2813  1.1  christos       ent = bfd_alloc (abfd, amt);
   2814  1.1  christos       if (ent == NULL)
   2815  1.1  christos 	return FALSE;
   2816  1.1  christos       ent->next = *plist;
   2817  1.1  christos       ent->sec = sec;
   2818  1.1  christos       ent->addend = addend;
   2819  1.1  christos       ent->plt.refcount = 0;
   2820  1.1  christos       *plist = ent;
   2821  1.1  christos     }
   2822  1.1  christos   ent->plt.refcount += 1;
   2823  1.1  christos   return TRUE;
   2824  1.1  christos }
   2825  1.1  christos 
   2826  1.1  christos static struct plt_entry *
   2827  1.1  christos find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
   2828  1.1  christos {
   2829  1.1  christos   struct plt_entry *ent;
   2830  1.1  christos 
   2831  1.1  christos   if (addend < 32768)
   2832  1.1  christos     sec = NULL;
   2833  1.1  christos   for (ent = *plist; ent != NULL; ent = ent->next)
   2834  1.1  christos     if (ent->sec == sec && ent->addend == addend)
   2835  1.1  christos       break;
   2836  1.1  christos   return ent;
   2837  1.1  christos }
   2838  1.1  christos 
   2839  1.1  christos static bfd_boolean
   2840  1.1  christos is_branch_reloc (enum elf_ppc_reloc_type r_type)
   2841  1.1  christos {
   2842  1.1  christos   return (r_type == R_PPC_PLTREL24
   2843  1.1  christos 	  || r_type == R_PPC_LOCAL24PC
   2844  1.7  christos 	  || r_type == R_PPC_REL24
   2845  1.7  christos 	  || r_type == R_PPC_REL14
   2846  1.7  christos 	  || r_type == R_PPC_REL14_BRTAKEN
   2847  1.7  christos 	  || r_type == R_PPC_REL14_BRNTAKEN
   2848  1.7  christos 	  || r_type == R_PPC_ADDR24
   2849  1.7  christos 	  || r_type == R_PPC_ADDR14
   2850  1.7  christos 	  || r_type == R_PPC_ADDR14_BRTAKEN
   2851  1.7  christos 	  || r_type == R_PPC_ADDR14_BRNTAKEN
   2852  1.7  christos 	  || r_type == R_PPC_VLE_REL24);
   2853  1.7  christos }
   2854  1.7  christos 
   2855  1.7  christos /* Relocs on inline plt call sequence insns prior to the call.  */
   2856  1.7  christos 
   2857  1.1  christos static bfd_boolean
   2858  1.1  christos is_plt_seq_reloc (enum elf_ppc_reloc_type r_type)
   2859  1.1  christos {
   2860  1.1  christos   return (r_type == R_PPC_PLT16_HA
   2861  1.1  christos 	  || r_type == R_PPC_PLT16_HI
   2862  1.7  christos 	  || r_type == R_PPC_PLT16_LO
   2863  1.7  christos 	  || r_type == R_PPC_PLTSEQ);
   2864  1.7  christos }
   2865  1.1  christos 
   2866  1.1  christos static void
   2867  1.1  christos bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
   2868  1.1  christos {
   2869  1.1  christos   _bfd_error_handler
   2870  1.1  christos     /* xgettext:c-format */
   2871  1.1  christos     (_("%pB: relocation %s cannot be used when making a shared object"),
   2872  1.1  christos      abfd,
   2873  1.1  christos      ppc_elf_howto_table[r_type]->name);
   2874  1.1  christos   bfd_set_error (bfd_error_bad_value);
   2875  1.1  christos }
   2876  1.1  christos 
   2877  1.1  christos /* Look through the relocs for a section during the first phase, and
   2878  1.1  christos    allocate space in the global offset table or procedure linkage
   2879  1.1  christos    table.  */
   2880  1.1  christos 
   2881  1.1  christos static bfd_boolean
   2882  1.1  christos ppc_elf_check_relocs (bfd *abfd,
   2883  1.1  christos 		      struct bfd_link_info *info,
   2884  1.1  christos 		      asection *sec,
   2885  1.1  christos 		      const Elf_Internal_Rela *relocs)
   2886  1.1  christos {
   2887  1.1  christos   struct ppc_elf_link_hash_table *htab;
   2888  1.3  christos   Elf_Internal_Shdr *symtab_hdr;
   2889  1.1  christos   struct elf_link_hash_entry **sym_hashes;
   2890  1.1  christos   const Elf_Internal_Rela *rel;
   2891  1.1  christos   const Elf_Internal_Rela *rel_end;
   2892  1.1  christos   asection *got2, *sreloc;
   2893  1.1  christos   struct elf_link_hash_entry *tga;
   2894  1.1  christos 
   2895  1.1  christos   if (bfd_link_relocatable (info))
   2896  1.1  christos     return TRUE;
   2897  1.1  christos 
   2898  1.1  christos   /* Don't do anything special with non-loaded, non-alloced sections.
   2899  1.1  christos      In particular, any relocs in such sections should not affect GOT
   2900  1.1  christos      and PLT reference counting (ie. we don't allow them to create GOT
   2901  1.7  christos      or PLT entries), there's no possibility or desire to optimize TLS
   2902  1.1  christos      relocs, and there's not much point in propagating relocs to shared
   2903  1.1  christos      libs that the dynamic linker won't relocate.  */
   2904  1.1  christos   if ((sec->flags & SEC_ALLOC) == 0)
   2905  1.1  christos     return TRUE;
   2906  1.1  christos 
   2907  1.1  christos #ifdef DEBUG
   2908  1.1  christos   _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
   2909  1.1  christos 		      sec, abfd);
   2910  1.1  christos #endif
   2911  1.1  christos 
   2912  1.1  christos   BFD_ASSERT (is_ppc_elf (abfd));
   2913  1.1  christos 
   2914  1.1  christos   /* Initialize howto table if not already done.  */
   2915  1.1  christos   if (!ppc_elf_howto_table[R_PPC_ADDR32])
   2916  1.1  christos     ppc_elf_howto_init ();
   2917  1.1  christos 
   2918  1.1  christos   htab = ppc_elf_hash_table (info);
   2919  1.1  christos   if (htab->glink == NULL)
   2920  1.1  christos     {
   2921  1.1  christos       if (htab->elf.dynobj == NULL)
   2922  1.1  christos 	htab->elf.dynobj = abfd;
   2923  1.1  christos       if (!ppc_elf_create_glink (htab->elf.dynobj, info))
   2924  1.1  christos 	return FALSE;
   2925  1.1  christos     }
   2926  1.1  christos   tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
   2927  1.1  christos 			      FALSE, FALSE, TRUE);
   2928  1.1  christos   symtab_hdr = &elf_symtab_hdr (abfd);
   2929  1.1  christos   sym_hashes = elf_sym_hashes (abfd);
   2930  1.1  christos   got2 = bfd_get_section_by_name (abfd, ".got2");
   2931  1.1  christos   sreloc = NULL;
   2932  1.1  christos 
   2933  1.3  christos   rel_end = relocs + sec->reloc_count;
   2934  1.7  christos   for (rel = relocs; rel < rel_end; rel++)
   2935  1.7  christos     {
   2936  1.1  christos       unsigned long r_symndx;
   2937  1.1  christos       enum elf_ppc_reloc_type r_type;
   2938  1.1  christos       struct elf_link_hash_entry *h;
   2939  1.1  christos       int tls_type;
   2940  1.1  christos       struct plt_entry **ifunc;
   2941  1.1  christos       struct plt_entry **pltent;
   2942  1.1  christos       bfd_vma addend;
   2943  1.1  christos 
   2944  1.1  christos       r_symndx = ELF32_R_SYM (rel->r_info);
   2945  1.1  christos       if (r_symndx < symtab_hdr->sh_info)
   2946  1.1  christos 	h = NULL;
   2947  1.1  christos       else
   2948  1.1  christos 	{
   2949  1.1  christos 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   2950  1.1  christos 	  while (h->root.type == bfd_link_hash_indirect
   2951  1.1  christos 		 || h->root.type == bfd_link_hash_warning)
   2952  1.7  christos 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   2953  1.1  christos 	}
   2954  1.1  christos 
   2955  1.1  christos       /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
   2956  1.1  christos 	 This shows up in particular in an R_PPC_ADDR32 in the eabi
   2957  1.1  christos 	 startup code.  */
   2958  1.1  christos       if (h != NULL
   2959  1.1  christos 	  && htab->elf.sgot == NULL
   2960  1.1  christos 	  && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
   2961  1.1  christos 	{
   2962  1.1  christos 	  if (htab->elf.dynobj == NULL)
   2963  1.1  christos 	    htab->elf.dynobj = abfd;
   2964  1.3  christos 	  if (!ppc_elf_create_got (htab->elf.dynobj, info))
   2965  1.1  christos 	    return FALSE;
   2966  1.1  christos 	  BFD_ASSERT (h == htab->elf.hgot);
   2967  1.1  christos 	}
   2968  1.1  christos 
   2969  1.1  christos       tls_type = 0;
   2970  1.1  christos       r_type = ELF32_R_TYPE (rel->r_info);
   2971  1.1  christos       ifunc = NULL;
   2972  1.3  christos       if (h == NULL && !htab->is_vxworks)
   2973  1.1  christos 	{
   2974  1.3  christos 	  Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   2975  1.1  christos 							  abfd, r_symndx);
   2976  1.7  christos 	  if (isym == NULL)
   2977  1.1  christos 	    return FALSE;
   2978  1.1  christos 
   2979  1.1  christos 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   2980  1.1  christos 	    {
   2981  1.1  christos 	      /* Set PLT_IFUNC flag for this sym, no GOT entry yet.  */
   2982  1.1  christos 	      ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
   2983  1.3  christos 					     NON_GOT | PLT_IFUNC);
   2984  1.7  christos 	      if (ifunc == NULL)
   2985  1.7  christos 		return FALSE;
   2986  1.7  christos 
   2987  1.7  christos 	      /* STT_GNU_IFUNC symbols must have a PLT entry;
   2988  1.1  christos 		 In a non-pie executable even when there are
   2989  1.7  christos 		 no plt calls.  */
   2990  1.3  christos 	      if (!bfd_link_pic (info)
   2991  1.7  christos 		  || is_branch_reloc (r_type)
   2992  1.7  christos 		  || r_type == R_PPC_PLT16_LO
   2993  1.7  christos 		  || r_type == R_PPC_PLT16_HI
   2994  1.7  christos 		  || r_type == R_PPC_PLT16_HA)
   2995  1.7  christos 		{
   2996  1.7  christos 		  addend = 0;
   2997  1.7  christos 		  if (r_type == R_PPC_PLTREL24)
   2998  1.3  christos 		    ppc_elf_tdata (abfd)->makes_plt_call = 1;
   2999  1.3  christos 		  if (bfd_link_pic (info)
   3000  1.1  christos 		      && (r_type == R_PPC_PLTREL24
   3001  1.1  christos 			  || r_type == R_PPC_PLT16_LO
   3002  1.1  christos 			  || r_type == R_PPC_PLT16_HI
   3003  1.1  christos 			  || r_type == R_PPC_PLT16_HA))
   3004  1.1  christos 		    addend = rel->r_addend;
   3005  1.1  christos 		  if (!update_plt_info (abfd, ifunc, got2, addend))
   3006  1.1  christos 		    return FALSE;
   3007  1.1  christos 		}
   3008  1.1  christos 	    }
   3009  1.1  christos 	}
   3010  1.1  christos 
   3011  1.1  christos       if (!htab->is_vxworks
   3012  1.1  christos 	  && is_branch_reloc (r_type)
   3013  1.1  christos 	  && h != NULL
   3014  1.1  christos 	  && h == tga)
   3015  1.1  christos 	{
   3016  1.1  christos 	  if (rel != relocs
   3017  1.9  christos 	      && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
   3018  1.1  christos 		  || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
   3019  1.1  christos 	    /* We have a new-style __tls_get_addr call with a marker
   3020  1.1  christos 	       reloc.  */
   3021  1.1  christos 	    ;
   3022  1.1  christos 	  else
   3023  1.1  christos 	    /* Mark this section as having an old-style call.  */
   3024  1.1  christos 	    sec->nomark_tls_get_addr = 1;
   3025  1.1  christos 	}
   3026  1.7  christos 
   3027  1.7  christos       switch ((int)r_type)
   3028  1.7  christos 	{
   3029  1.7  christos 	case R_PPC_TLSGD:
   3030  1.7  christos 	case R_PPC_TLSLD:
   3031  1.7  christos 	  /* These special tls relocs tie a call to __tls_get_addr with
   3032  1.7  christos 	     its parameter symbol.  */
   3033  1.7  christos 	  if (h != NULL)
   3034  1.7  christos 	    ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
   3035  1.1  christos 	  else
   3036  1.1  christos 	    if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
   3037  1.1  christos 					NON_GOT | TLS_TLS | TLS_MARK))
   3038  1.1  christos 	      return FALSE;
   3039  1.1  christos 	  break;
   3040  1.1  christos 
   3041  1.1  christos 	case R_PPC_PLTSEQ:
   3042  1.1  christos 	  break;
   3043  1.1  christos 
   3044  1.1  christos 	case R_PPC_GOT_TLSLD16:
   3045  1.1  christos 	case R_PPC_GOT_TLSLD16_LO:
   3046  1.1  christos 	case R_PPC_GOT_TLSLD16_HI:
   3047  1.1  christos 	case R_PPC_GOT_TLSLD16_HA:
   3048  1.1  christos 	  tls_type = TLS_TLS | TLS_LD;
   3049  1.1  christos 	  goto dogottls;
   3050  1.1  christos 
   3051  1.1  christos 	case R_PPC_GOT_TLSGD16:
   3052  1.1  christos 	case R_PPC_GOT_TLSGD16_LO:
   3053  1.1  christos 	case R_PPC_GOT_TLSGD16_HI:
   3054  1.1  christos 	case R_PPC_GOT_TLSGD16_HA:
   3055  1.7  christos 	  tls_type = TLS_TLS | TLS_GD;
   3056  1.1  christos 	  goto dogottls;
   3057  1.1  christos 
   3058  1.1  christos 	case R_PPC_GOT_TPREL16:
   3059  1.1  christos 	case R_PPC_GOT_TPREL16_LO:
   3060  1.1  christos 	case R_PPC_GOT_TPREL16_HI:
   3061  1.1  christos 	case R_PPC_GOT_TPREL16_HA:
   3062  1.1  christos 	  if (bfd_link_dll (info))
   3063  1.1  christos 	    info->flags |= DF_STATIC_TLS;
   3064  1.1  christos 	  tls_type = TLS_TLS | TLS_TPREL;
   3065  1.1  christos 	  goto dogottls;
   3066  1.1  christos 
   3067  1.7  christos 	case R_PPC_GOT_DTPREL16:
   3068  1.1  christos 	case R_PPC_GOT_DTPREL16_LO:
   3069  1.1  christos 	case R_PPC_GOT_DTPREL16_HI:
   3070  1.1  christos 	case R_PPC_GOT_DTPREL16_HA:
   3071  1.1  christos 	  tls_type = TLS_TLS | TLS_DTPREL;
   3072  1.1  christos 	dogottls:
   3073  1.1  christos 	  sec->has_tls_reloc = 1;
   3074  1.1  christos 	  /* Fall through.  */
   3075  1.7  christos 
   3076  1.1  christos 	  /* GOT16 relocations */
   3077  1.1  christos 	case R_PPC_GOT16:
   3078  1.1  christos 	case R_PPC_GOT16_LO:
   3079  1.1  christos 	case R_PPC_GOT16_HI:
   3080  1.1  christos 	case R_PPC_GOT16_HA:
   3081  1.1  christos 	  /* This symbol requires a global offset table entry.  */
   3082  1.1  christos 	  if (htab->elf.sgot == NULL)
   3083  1.1  christos 	    {
   3084  1.1  christos 	      if (htab->elf.dynobj == NULL)
   3085  1.1  christos 		htab->elf.dynobj = abfd;
   3086  1.1  christos 	      if (!ppc_elf_create_got (htab->elf.dynobj, info))
   3087  1.1  christos 		return FALSE;
   3088  1.1  christos 	    }
   3089  1.1  christos 	  if (h != NULL)
   3090  1.1  christos 	    {
   3091  1.1  christos 	      h->got.refcount += 1;
   3092  1.1  christos 	      ppc_elf_hash_entry (h)->tls_mask |= tls_type;
   3093  1.1  christos 	    }
   3094  1.3  christos 	  else
   3095  1.1  christos 	    /* This is a global offset table entry for a local symbol.  */
   3096  1.1  christos 	    if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
   3097  1.1  christos 	      return FALSE;
   3098  1.1  christos 
   3099  1.1  christos 	  /* We may also need a plt entry if the symbol turns out to be
   3100  1.1  christos 	     an ifunc.  */
   3101  1.1  christos 	  if (h != NULL && !bfd_link_pic (info))
   3102  1.1  christos 	    {
   3103  1.3  christos 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3104  1.3  christos 		return FALSE;
   3105  1.3  christos 	    }
   3106  1.1  christos 	  break;
   3107  1.1  christos 
   3108  1.1  christos 	  /* Indirect .sdata relocation.  */
   3109  1.1  christos 	case R_PPC_EMB_SDAI16:
   3110  1.1  christos 	  htab->sdata[0].sym->ref_regular = 1;
   3111  1.1  christos 	  if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
   3112  1.1  christos 						    h, rel))
   3113  1.1  christos 	    return FALSE;
   3114  1.1  christos 	  if (h != NULL)
   3115  1.1  christos 	    {
   3116  1.9  christos 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3117  1.1  christos 	      h->non_got_ref = TRUE;
   3118  1.1  christos 	    }
   3119  1.1  christos 	  break;
   3120  1.1  christos 
   3121  1.3  christos 	  /* Indirect .sdata2 relocation.  */
   3122  1.3  christos 	case R_PPC_EMB_SDA2I16:
   3123  1.3  christos 	  if (!bfd_link_executable (info))
   3124  1.1  christos 	    {
   3125  1.1  christos 	      bad_shared_reloc (abfd, r_type);
   3126  1.1  christos 	      return FALSE;
   3127  1.1  christos 	    }
   3128  1.1  christos 	  htab->sdata[1].sym->ref_regular = 1;
   3129  1.1  christos 	  if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
   3130  1.1  christos 						    h, rel))
   3131  1.1  christos 	    return FALSE;
   3132  1.3  christos 	  if (h != NULL)
   3133  1.3  christos 	    {
   3134  1.7  christos 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3135  1.3  christos 	      h->non_got_ref = TRUE;
   3136  1.1  christos 	    }
   3137  1.1  christos 	  break;
   3138  1.1  christos 
   3139  1.1  christos 	case R_PPC_SDAREL16:
   3140  1.1  christos 	  htab->sdata[0].sym->ref_regular = 1;
   3141  1.1  christos 	  /* Fall through.  */
   3142  1.1  christos 
   3143  1.1  christos 	case R_PPC_VLE_SDAREL_LO16A:
   3144  1.1  christos 	case R_PPC_VLE_SDAREL_LO16D:
   3145  1.1  christos 	case R_PPC_VLE_SDAREL_HI16A:
   3146  1.1  christos 	case R_PPC_VLE_SDAREL_HI16D:
   3147  1.1  christos 	case R_PPC_VLE_SDAREL_HA16A:
   3148  1.1  christos 	case R_PPC_VLE_SDAREL_HA16D:
   3149  1.1  christos 	  if (h != NULL)
   3150  1.1  christos 	    {
   3151  1.1  christos 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3152  1.1  christos 	      h->non_got_ref = TRUE;
   3153  1.1  christos 	    }
   3154  1.1  christos 	  break;
   3155  1.1  christos 
   3156  1.1  christos 	case R_PPC_VLE_REL8:
   3157  1.1  christos 	case R_PPC_VLE_REL15:
   3158  1.7  christos 	case R_PPC_VLE_REL24:
   3159  1.1  christos 	case R_PPC_VLE_LO16A:
   3160  1.1  christos 	case R_PPC_VLE_LO16D:
   3161  1.1  christos 	case R_PPC_VLE_HI16A:
   3162  1.9  christos 	case R_PPC_VLE_HI16D:
   3163  1.1  christos 	case R_PPC_VLE_HA16A:
   3164  1.1  christos 	case R_PPC_VLE_HA16D:
   3165  1.1  christos 	case R_PPC_VLE_ADDR20:
   3166  1.1  christos 	  break;
   3167  1.3  christos 
   3168  1.1  christos 	case R_PPC_EMB_SDA2REL:
   3169  1.1  christos 	  if (!bfd_link_executable (info))
   3170  1.1  christos 	    {
   3171  1.1  christos 	      bad_shared_reloc (abfd, r_type);
   3172  1.1  christos 	      return FALSE;
   3173  1.1  christos 	    }
   3174  1.1  christos 	  htab->sdata[1].sym->ref_regular = 1;
   3175  1.1  christos 	  if (h != NULL)
   3176  1.1  christos 	    {
   3177  1.1  christos 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3178  1.1  christos 	      h->non_got_ref = TRUE;
   3179  1.1  christos 	    }
   3180  1.1  christos 	  break;
   3181  1.1  christos 
   3182  1.1  christos 	case R_PPC_VLE_SDA21_LO:
   3183  1.1  christos 	case R_PPC_VLE_SDA21:
   3184  1.1  christos 	case R_PPC_EMB_SDA21:
   3185  1.1  christos 	case R_PPC_EMB_RELSDA:
   3186  1.1  christos 	  if (h != NULL)
   3187  1.1  christos 	    {
   3188  1.1  christos 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3189  1.1  christos 	      h->non_got_ref = TRUE;
   3190  1.1  christos 	    }
   3191  1.1  christos 	  break;
   3192  1.1  christos 
   3193  1.1  christos 	case R_PPC_EMB_NADDR32:
   3194  1.1  christos 	case R_PPC_EMB_NADDR16:
   3195  1.1  christos 	case R_PPC_EMB_NADDR16_LO:
   3196  1.1  christos 	case R_PPC_EMB_NADDR16_HI:
   3197  1.1  christos 	case R_PPC_EMB_NADDR16_HA:
   3198  1.7  christos 	  if (h != NULL)
   3199  1.7  christos 	    h->non_got_ref = TRUE;
   3200  1.7  christos 	  break;
   3201  1.7  christos 
   3202  1.7  christos 	case R_PPC_PLTREL24:
   3203  1.7  christos 	  if (h == NULL)
   3204  1.7  christos 	    break;
   3205  1.1  christos 	  ppc_elf_tdata (abfd)->makes_plt_call = 1;
   3206  1.1  christos 	  goto pltentry;
   3207  1.1  christos 
   3208  1.1  christos 	case R_PPC_PLTCALL:
   3209  1.1  christos 	  sec->has_pltcall = 1;
   3210  1.7  christos 	  /* Fall through.  */
   3211  1.1  christos 
   3212  1.1  christos 	case R_PPC_PLT32:
   3213  1.1  christos 	case R_PPC_PLTREL32:
   3214  1.3  christos 	case R_PPC_PLT16_LO:
   3215  1.1  christos 	case R_PPC_PLT16_HI:
   3216  1.1  christos 	case R_PPC_PLT16_HA:
   3217  1.7  christos 	pltentry:
   3218  1.7  christos #ifdef DEBUG
   3219  1.7  christos 	  fprintf (stderr, "Reloc requires a PLT entry\n");
   3220  1.7  christos #endif
   3221  1.7  christos 	  /* This symbol requires a procedure linkage table entry.  */
   3222  1.7  christos 	  if (h == NULL)
   3223  1.1  christos 	    {
   3224  1.7  christos 	      pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx,
   3225  1.7  christos 					      NON_GOT | PLT_KEEP);
   3226  1.1  christos 	      if (pltent == NULL)
   3227  1.7  christos 		return FALSE;
   3228  1.1  christos 	    }
   3229  1.7  christos 	  else
   3230  1.7  christos 	    {
   3231  1.7  christos 	      if (r_type != R_PPC_PLTREL24)
   3232  1.7  christos 		ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP;
   3233  1.7  christos 	      h->needs_plt = 1;
   3234  1.7  christos 	      pltent = &h->plt.plist;
   3235  1.7  christos 	    }
   3236  1.7  christos 	  addend = 0;
   3237  1.7  christos 	  if (bfd_link_pic (info)
   3238  1.1  christos 	      && (r_type == R_PPC_PLTREL24
   3239  1.1  christos 		  || r_type == R_PPC_PLT16_LO
   3240  1.1  christos 		  || r_type == R_PPC_PLT16_HI
   3241  1.1  christos 		  || r_type == R_PPC_PLT16_HA))
   3242  1.1  christos 	    addend = rel->r_addend;
   3243  1.1  christos 	  if (!update_plt_info (abfd, pltent, got2, addend))
   3244  1.1  christos 	    return FALSE;
   3245  1.1  christos 	  break;
   3246  1.1  christos 
   3247  1.1  christos 	  /* The following relocations don't need to propagate the
   3248  1.1  christos 	     relocation if linking a shared object since they are
   3249  1.1  christos 	     section relative.  */
   3250  1.1  christos 	case R_PPC_SECTOFF:
   3251  1.1  christos 	case R_PPC_SECTOFF_LO:
   3252  1.1  christos 	case R_PPC_SECTOFF_HI:
   3253  1.1  christos 	case R_PPC_SECTOFF_HA:
   3254  1.1  christos 	case R_PPC_DTPREL16:
   3255  1.1  christos 	case R_PPC_DTPREL16_LO:
   3256  1.1  christos 	case R_PPC_DTPREL16_HI:
   3257  1.1  christos 	case R_PPC_DTPREL16_HA:
   3258  1.3  christos 	case R_PPC_TOC16:
   3259  1.1  christos 	  break;
   3260  1.1  christos 
   3261  1.1  christos 	case R_PPC_REL16:
   3262  1.1  christos 	case R_PPC_REL16_LO:
   3263  1.1  christos 	case R_PPC_REL16_HI:
   3264  1.1  christos 	case R_PPC_REL16_HA:
   3265  1.1  christos 	case R_PPC_REL16DX_HA:
   3266  1.1  christos 	  ppc_elf_tdata (abfd)->has_rel16 = 1;
   3267  1.1  christos 	  break;
   3268  1.1  christos 
   3269  1.1  christos 	  /* These are just markers.  */
   3270  1.7  christos 	case R_PPC_TLS:
   3271  1.1  christos 	case R_PPC_EMB_MRKREF:
   3272  1.1  christos 	case R_PPC_NONE:
   3273  1.1  christos 	case R_PPC_max:
   3274  1.1  christos 	case R_PPC_RELAX:
   3275  1.1  christos 	case R_PPC_RELAX_PLT:
   3276  1.1  christos 	case R_PPC_RELAX_PLTREL24:
   3277  1.1  christos 	case R_PPC_16DX_HA:
   3278  1.1  christos 	  break;
   3279  1.1  christos 
   3280  1.1  christos 	  /* These should only appear in dynamic objects.  */
   3281  1.1  christos 	case R_PPC_COPY:
   3282  1.1  christos 	case R_PPC_GLOB_DAT:
   3283  1.1  christos 	case R_PPC_JMP_SLOT:
   3284  1.1  christos 	case R_PPC_RELATIVE:
   3285  1.1  christos 	case R_PPC_IRELATIVE:
   3286  1.1  christos 	  break;
   3287  1.1  christos 
   3288  1.1  christos 	  /* These aren't handled yet.  We'll report an error later.  */
   3289  1.1  christos 	case R_PPC_ADDR30:
   3290  1.1  christos 	case R_PPC_EMB_RELSEC16:
   3291  1.1  christos 	case R_PPC_EMB_RELST_LO:
   3292  1.1  christos 	case R_PPC_EMB_RELST_HI:
   3293  1.1  christos 	case R_PPC_EMB_RELST_HA:
   3294  1.1  christos 	case R_PPC_EMB_BIT_FLD:
   3295  1.1  christos 	  break;
   3296  1.1  christos 
   3297  1.3  christos 	  /* This refers only to functions defined in the shared library.  */
   3298  1.3  christos 	case R_PPC_LOCAL24PC:
   3299  1.3  christos 	  if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
   3300  1.3  christos 	    {
   3301  1.3  christos 	      htab->plt_type = PLT_OLD;
   3302  1.3  christos 	      htab->old_bfd = abfd;
   3303  1.1  christos 	    }
   3304  1.1  christos 	  if (h != NULL && h->type == STT_GNU_IFUNC)
   3305  1.1  christos 	    {
   3306  1.1  christos 	      h->needs_plt = 1;
   3307  1.1  christos 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3308  1.1  christos 		return FALSE;
   3309  1.1  christos 	    }
   3310  1.1  christos 	  break;
   3311  1.1  christos 
   3312  1.1  christos 	  /* This relocation describes the C++ object vtable hierarchy.
   3313  1.1  christos 	     Reconstruct it for later use during GC.  */
   3314  1.1  christos 	case R_PPC_GNU_VTINHERIT:
   3315  1.9  christos 	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
   3316  1.1  christos 	    return FALSE;
   3317  1.1  christos 	  break;
   3318  1.1  christos 
   3319  1.7  christos 	  /* This relocation describes which C++ vtable entries are actually
   3320  1.1  christos 	     used.  Record for later use during GC.  */
   3321  1.1  christos 	case R_PPC_GNU_VTENTRY:
   3322  1.1  christos 	  if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
   3323  1.1  christos 	    return FALSE;
   3324  1.1  christos 	  break;
   3325  1.7  christos 
   3326  1.1  christos 	  /* We shouldn't really be seeing TPREL32.  */
   3327  1.1  christos 	case R_PPC_TPREL32:
   3328  1.1  christos 	case R_PPC_TPREL16:
   3329  1.1  christos 	case R_PPC_TPREL16_LO:
   3330  1.1  christos 	case R_PPC_TPREL16_HI:
   3331  1.1  christos 	case R_PPC_TPREL16_HA:
   3332  1.1  christos 	  if (bfd_link_dll (info))
   3333  1.1  christos 	    info->flags |= DF_STATIC_TLS;
   3334  1.1  christos 	  goto dodyn;
   3335  1.1  christos 
   3336  1.1  christos 	  /* Nor these.  */
   3337  1.1  christos 	case R_PPC_DTPMOD32:
   3338  1.3  christos 	case R_PPC_DTPREL32:
   3339  1.1  christos 	  goto dodyn;
   3340  1.1  christos 
   3341  1.1  christos 	case R_PPC_REL32:
   3342  1.1  christos 	  if (h == NULL
   3343  1.1  christos 	      && got2 != NULL
   3344  1.1  christos 	      && (sec->flags & SEC_CODE) != 0
   3345  1.1  christos 	      && bfd_link_pic (info)
   3346  1.1  christos 	      && htab->plt_type == PLT_UNSET)
   3347  1.1  christos 	    {
   3348  1.1  christos 	      /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
   3349  1.1  christos 		 the start of a function, which assembles to a REL32
   3350  1.1  christos 		 reference to .got2.  If we detect one of these, then
   3351  1.1  christos 		 force the old PLT layout because the linker cannot
   3352  1.1  christos 		 reliably deduce the GOT pointer value needed for
   3353  1.1  christos 		 PLT call stubs.  */
   3354  1.1  christos 	      asection *s;
   3355  1.1  christos 	      Elf_Internal_Sym *isym;
   3356  1.1  christos 
   3357  1.1  christos 	      isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   3358  1.1  christos 					    abfd, r_symndx);
   3359  1.1  christos 	      if (isym == NULL)
   3360  1.1  christos 		return FALSE;
   3361  1.1  christos 
   3362  1.1  christos 	      s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   3363  1.1  christos 	      if (s == got2)
   3364  1.1  christos 		{
   3365  1.1  christos 		  htab->plt_type = PLT_OLD;
   3366  1.1  christos 		  htab->old_bfd = abfd;
   3367  1.1  christos 		}
   3368  1.1  christos 	    }
   3369  1.1  christos 	  if (h == NULL || h == htab->elf.hgot)
   3370  1.1  christos 	    break;
   3371  1.1  christos 	  /* fall through */
   3372  1.1  christos 
   3373  1.3  christos 	case R_PPC_ADDR32:
   3374  1.1  christos 	case R_PPC_ADDR16:
   3375  1.1  christos 	case R_PPC_ADDR16_LO:
   3376  1.1  christos 	case R_PPC_ADDR16_HI:
   3377  1.1  christos 	case R_PPC_ADDR16_HA:
   3378  1.1  christos 	case R_PPC_UADDR32:
   3379  1.1  christos 	case R_PPC_UADDR16:
   3380  1.1  christos 	  if (h != NULL && !bfd_link_pic (info))
   3381  1.1  christos 	    {
   3382  1.1  christos 	      /* We may need a plt entry if the symbol turns out to be
   3383  1.3  christos 		 a function defined in a dynamic object.  */
   3384  1.3  christos 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3385  1.3  christos 		return FALSE;
   3386  1.3  christos 
   3387  1.1  christos 	      /* We may need a copy reloc too.  */
   3388  1.1  christos 	      h->non_got_ref = 1;
   3389  1.1  christos 	      h->pointer_equality_needed = 1;
   3390  1.1  christos 	      if (r_type == R_PPC_ADDR16_HA)
   3391  1.1  christos 		ppc_elf_hash_entry (h)->has_addr16_ha = 1;
   3392  1.1  christos 	      if (r_type == R_PPC_ADDR16_LO)
   3393  1.1  christos 		ppc_elf_hash_entry (h)->has_addr16_lo = 1;
   3394  1.1  christos 	    }
   3395  1.1  christos 	  goto dodyn;
   3396  1.1  christos 
   3397  1.1  christos 	case R_PPC_REL24:
   3398  1.1  christos 	case R_PPC_REL14:
   3399  1.1  christos 	case R_PPC_REL14_BRTAKEN:
   3400  1.1  christos 	case R_PPC_REL14_BRNTAKEN:
   3401  1.1  christos 	  if (h == NULL)
   3402  1.1  christos 	    break;
   3403  1.1  christos 	  if (h == htab->elf.hgot)
   3404  1.1  christos 	    {
   3405  1.1  christos 	      if (htab->plt_type == PLT_UNSET)
   3406  1.1  christos 		{
   3407  1.1  christos 		  htab->plt_type = PLT_OLD;
   3408  1.1  christos 		  htab->old_bfd = abfd;
   3409  1.1  christos 		}
   3410  1.1  christos 	      break;
   3411  1.3  christos 	    }
   3412  1.1  christos 	  /* fall through */
   3413  1.1  christos 
   3414  1.1  christos 	case R_PPC_ADDR24:
   3415  1.1  christos 	case R_PPC_ADDR14:
   3416  1.1  christos 	case R_PPC_ADDR14_BRTAKEN:
   3417  1.1  christos 	case R_PPC_ADDR14_BRNTAKEN:
   3418  1.1  christos 	  if (h != NULL && !bfd_link_pic (info))
   3419  1.1  christos 	    {
   3420  1.1  christos 	      /* We may need a plt entry if the symbol turns out to be
   3421  1.1  christos 		 a function defined in a dynamic object.  */
   3422  1.1  christos 	      h->needs_plt = 1;
   3423  1.1  christos 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3424  1.1  christos 		return FALSE;
   3425  1.1  christos 	      break;
   3426  1.1  christos 	    }
   3427  1.1  christos 
   3428  1.1  christos 	dodyn:
   3429  1.1  christos 	  /* If we are creating a shared library, and this is a reloc
   3430  1.1  christos 	     against a global symbol, or a non PC relative reloc
   3431  1.1  christos 	     against a local symbol, then we need to copy the reloc
   3432  1.1  christos 	     into the shared library.  However, if we are linking with
   3433  1.1  christos 	     -Bsymbolic, we do not need to copy a reloc against a
   3434  1.1  christos 	     global symbol which is defined in an object we are
   3435  1.1  christos 	     including in the link (i.e., DEF_REGULAR is set).  At
   3436  1.1  christos 	     this point we have not seen all the input files, so it is
   3437  1.1  christos 	     possible that DEF_REGULAR is not set now but will be set
   3438  1.1  christos 	     later (it is never cleared).  In case of a weak definition,
   3439  1.1  christos 	     DEF_REGULAR may be cleared later by a strong definition in
   3440  1.1  christos 	     a shared library.  We account for that possibility below by
   3441  1.1  christos 	     storing information in the dyn_relocs field of the hash
   3442  1.1  christos 	     table entry.  A similar situation occurs when creating
   3443  1.3  christos 	     shared libraries and symbol visibility changes render the
   3444  1.1  christos 	     symbol local.
   3445  1.1  christos 
   3446  1.3  christos 	     If on the other hand, we are creating an executable, we
   3447  1.1  christos 	     may need to keep relocations for symbols satisfied by a
   3448  1.1  christos 	     dynamic library if we manage to avoid copy relocs for the
   3449  1.1  christos 	     symbol.  */
   3450  1.3  christos 	  if ((bfd_link_pic (info)
   3451  1.1  christos 	       && (must_be_dyn_reloc (info, r_type)
   3452  1.1  christos 		   || (h != NULL
   3453  1.1  christos 		       && (!SYMBOLIC_BIND (info, h)
   3454  1.1  christos 			   || h->root.type == bfd_link_hash_defweak
   3455  1.1  christos 			   || !h->def_regular))))
   3456  1.1  christos 	      || (ELIMINATE_COPY_RELOCS
   3457  1.1  christos 		  && !bfd_link_pic (info)
   3458  1.1  christos 		  && h != NULL
   3459  1.1  christos 		  && (h->root.type == bfd_link_hash_defweak
   3460  1.1  christos 		      || !h->def_regular)))
   3461  1.1  christos 	    {
   3462  1.1  christos #ifdef DEBUG
   3463  1.1  christos 	      fprintf (stderr,
   3464  1.1  christos 		       "ppc_elf_check_relocs needs to "
   3465  1.1  christos 		       "create relocation for %s\n",
   3466  1.1  christos 		       (h && h->root.root.string
   3467  1.1  christos 			? h->root.root.string : "<unknown>"));
   3468  1.1  christos #endif
   3469  1.1  christos 	      if (sreloc == NULL)
   3470  1.1  christos 		{
   3471  1.1  christos 		  if (htab->elf.dynobj == NULL)
   3472  1.1  christos 		    htab->elf.dynobj = abfd;
   3473  1.1  christos 
   3474  1.1  christos 		  sreloc = _bfd_elf_make_dynamic_reloc_section
   3475  1.1  christos 		    (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
   3476  1.1  christos 
   3477  1.1  christos 		  if (sreloc == NULL)
   3478  1.3  christos 		    return FALSE;
   3479  1.3  christos 		}
   3480  1.3  christos 
   3481  1.1  christos 	      /* If this is a global symbol, we count the number of
   3482  1.3  christos 		 relocations we need for this symbol.  */
   3483  1.3  christos 	      if (h != NULL)
   3484  1.3  christos 		{
   3485  1.3  christos 		  struct elf_dyn_relocs *p;
   3486  1.3  christos 		  struct elf_dyn_relocs **rel_head;
   3487  1.3  christos 
   3488  1.3  christos 		  rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
   3489  1.3  christos 		  p = *rel_head;
   3490  1.3  christos 		  if (p == NULL || p->sec != sec)
   3491  1.3  christos 		    {
   3492  1.3  christos 		      p = bfd_alloc (htab->elf.dynobj, sizeof *p);
   3493  1.3  christos 		      if (p == NULL)
   3494  1.3  christos 			return FALSE;
   3495  1.3  christos 		      p->next = *rel_head;
   3496  1.3  christos 		      *rel_head = p;
   3497  1.1  christos 		      p->sec = sec;
   3498  1.1  christos 		      p->count = 0;
   3499  1.1  christos 		      p->pc_count = 0;
   3500  1.1  christos 		    }
   3501  1.1  christos 		  p->count += 1;
   3502  1.1  christos 		  if (!must_be_dyn_reloc (info, r_type))
   3503  1.3  christos 		    p->pc_count += 1;
   3504  1.3  christos 		}
   3505  1.3  christos 	      else
   3506  1.1  christos 		{
   3507  1.1  christos 		  /* Track dynamic relocs needed for local syms too.
   3508  1.1  christos 		     We really need local syms available to do this
   3509  1.1  christos 		     easily.  Oh well.  */
   3510  1.1  christos 		  struct ppc_dyn_relocs *p;
   3511  1.1  christos 		  struct ppc_dyn_relocs **rel_head;
   3512  1.1  christos 		  bfd_boolean is_ifunc;
   3513  1.1  christos 		  asection *s;
   3514  1.1  christos 		  void *vpp;
   3515  1.1  christos 		  Elf_Internal_Sym *isym;
   3516  1.1  christos 
   3517  1.1  christos 		  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   3518  1.1  christos 						abfd, r_symndx);
   3519  1.1  christos 		  if (isym == NULL)
   3520  1.3  christos 		    return FALSE;
   3521  1.3  christos 
   3522  1.3  christos 		  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   3523  1.3  christos 		  if (s == NULL)
   3524  1.3  christos 		    s = sec;
   3525  1.3  christos 
   3526  1.3  christos 		  vpp = &elf_section_data (s)->local_dynrel;
   3527  1.3  christos 		  rel_head = (struct ppc_dyn_relocs **) vpp;
   3528  1.3  christos 		  is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
   3529  1.3  christos 		  p = *rel_head;
   3530  1.3  christos 		  if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
   3531  1.3  christos 		    p = p->next;
   3532  1.3  christos 		  if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
   3533  1.3  christos 		    {
   3534  1.3  christos 		      p = bfd_alloc (htab->elf.dynobj, sizeof *p);
   3535  1.3  christos 		      if (p == NULL)
   3536  1.3  christos 			return FALSE;
   3537  1.1  christos 		      p->next = *rel_head;
   3538  1.1  christos 		      *rel_head = p;
   3539  1.1  christos 		      p->sec = sec;
   3540  1.1  christos 		      p->ifunc = is_ifunc;
   3541  1.1  christos 		      p->count = 0;
   3542  1.1  christos 		    }
   3543  1.1  christos 		  p->count += 1;
   3544  1.1  christos 		}
   3545  1.1  christos 	    }
   3546  1.1  christos 
   3547  1.7  christos 	  break;
   3548  1.7  christos 	}
   3549  1.7  christos     }
   3550  1.7  christos 
   3551  1.1  christos   return TRUE;
   3552  1.7  christos }
   3553  1.1  christos 
   3554  1.1  christos /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
   3556  1.1  christos    and OBFD, and merge non-conflicting ones.  */
   3557  1.1  christos bfd_boolean
   3558  1.1  christos _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
   3559  1.1  christos {
   3560  1.1  christos   bfd *obfd = info->output_bfd;
   3561  1.1  christos   obj_attribute *in_attr, *in_attrs;
   3562  1.7  christos   obj_attribute *out_attr, *out_attrs;
   3563  1.1  christos   bfd_boolean ret = TRUE;
   3564  1.1  christos 
   3565  1.7  christos   in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
   3566  1.7  christos   out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
   3567  1.7  christos 
   3568  1.7  christos   in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
   3569  1.7  christos   out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
   3570  1.7  christos 
   3571  1.7  christos   if (in_attr->i != out_attr->i)
   3572  1.7  christos     {
   3573  1.7  christos       int in_fp = in_attr->i & 3;
   3574  1.7  christos       int out_fp = out_attr->i & 3;
   3575  1.7  christos       static bfd *last_fp, *last_ld;
   3576  1.7  christos 
   3577  1.7  christos       if (in_fp == 0)
   3578  1.7  christos 	;
   3579  1.7  christos       else if (out_fp == 0)
   3580  1.7  christos 	{
   3581  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3582  1.7  christos 	  out_attr->i ^= in_fp;
   3583  1.7  christos 	  last_fp = ibfd;
   3584  1.7  christos 	}
   3585  1.7  christos       else if (out_fp != 2 && in_fp == 2)
   3586  1.7  christos 	{
   3587  1.7  christos 	  _bfd_error_handler
   3588  1.7  christos 	    /* xgettext:c-format */
   3589  1.7  christos 	    (_("%pB uses hard float, %pB uses soft float"),
   3590  1.7  christos 	     last_fp, ibfd);
   3591  1.7  christos 	  ret = FALSE;
   3592  1.7  christos 	}
   3593  1.7  christos       else if (out_fp == 2 && in_fp != 2)
   3594  1.7  christos 	{
   3595  1.7  christos 	  _bfd_error_handler
   3596  1.7  christos 	    /* xgettext:c-format */
   3597  1.7  christos 	    (_("%pB uses hard float, %pB uses soft float"),
   3598  1.7  christos 	     ibfd, last_fp);
   3599  1.7  christos 	  ret = FALSE;
   3600  1.7  christos 	}
   3601  1.7  christos       else if (out_fp == 1 && in_fp == 3)
   3602  1.7  christos 	{
   3603  1.7  christos 	  _bfd_error_handler
   3604  1.7  christos 	    /* xgettext:c-format */
   3605  1.7  christos 	    (_("%pB uses double-precision hard float, "
   3606  1.7  christos 	       "%pB uses single-precision hard float"), last_fp, ibfd);
   3607  1.7  christos 	  ret = FALSE;
   3608  1.7  christos 	}
   3609  1.7  christos       else if (out_fp == 3 && in_fp == 1)
   3610  1.7  christos 	{
   3611  1.7  christos 	  _bfd_error_handler
   3612  1.7  christos 	    /* xgettext:c-format */
   3613  1.1  christos 	    (_("%pB uses double-precision hard float, "
   3614  1.7  christos 	       "%pB uses single-precision hard float"), ibfd, last_fp);
   3615  1.7  christos 	  ret = FALSE;
   3616  1.7  christos 	}
   3617  1.7  christos 
   3618  1.7  christos       in_fp = in_attr->i & 0xc;
   3619  1.7  christos       out_fp = out_attr->i & 0xc;
   3620  1.7  christos       if (in_fp == 0)
   3621  1.7  christos 	;
   3622  1.7  christos       else if (out_fp == 0)
   3623  1.7  christos 	{
   3624  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3625  1.7  christos 	  out_attr->i ^= in_fp;
   3626  1.7  christos 	  last_ld = ibfd;
   3627  1.7  christos 	}
   3628  1.7  christos       else if (out_fp != 2 * 4 && in_fp == 2 * 4)
   3629  1.7  christos 	{
   3630  1.7  christos 	  _bfd_error_handler
   3631  1.7  christos 	    /* xgettext:c-format */
   3632  1.7  christos 	    (_("%pB uses 64-bit long double, "
   3633  1.7  christos 	       "%pB uses 128-bit long double"), ibfd, last_ld);
   3634  1.7  christos 	  ret = FALSE;
   3635  1.7  christos 	}
   3636  1.7  christos       else if (in_fp != 2 * 4 && out_fp == 2 * 4)
   3637  1.7  christos 	{
   3638  1.7  christos 	  _bfd_error_handler
   3639  1.7  christos 	    /* xgettext:c-format */
   3640  1.7  christos 	    (_("%pB uses 64-bit long double, "
   3641  1.7  christos 	       "%pB uses 128-bit long double"), last_ld, ibfd);
   3642  1.7  christos 	  ret = FALSE;
   3643  1.7  christos 	}
   3644  1.7  christos       else if (out_fp == 1 * 4 && in_fp == 3 * 4)
   3645  1.7  christos 	{
   3646  1.7  christos 	  _bfd_error_handler
   3647  1.7  christos 	    /* xgettext:c-format */
   3648  1.7  christos 	    (_("%pB uses IBM long double, "
   3649  1.7  christos 	       "%pB uses IEEE long double"), last_ld, ibfd);
   3650  1.7  christos 	  ret = FALSE;
   3651  1.7  christos 	}
   3652  1.7  christos       else if (out_fp == 3 * 4 && in_fp == 1 * 4)
   3653  1.7  christos 	{
   3654  1.7  christos 	  _bfd_error_handler
   3655  1.7  christos 	    /* xgettext:c-format */
   3656  1.7  christos 	    (_("%pB uses IBM long double, "
   3657  1.7  christos 	       "%pB uses IEEE long double"), ibfd, last_ld);
   3658  1.1  christos 	  ret = FALSE;
   3659  1.7  christos 	}
   3660  1.7  christos     }
   3661  1.7  christos 
   3662  1.7  christos   if (!ret)
   3663  1.7  christos     {
   3664  1.7  christos       out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3665  1.7  christos       bfd_set_error (bfd_error_bad_value);
   3666  1.7  christos     }
   3667  1.7  christos   return ret;
   3668  1.7  christos }
   3669  1.7  christos 
   3670  1.7  christos /* Merge object attributes from IBFD into OBFD.  Warn if
   3671  1.7  christos    there are conflicting attributes.  */
   3672  1.7  christos static bfd_boolean
   3673  1.7  christos ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
   3674  1.7  christos {
   3675  1.7  christos   bfd *obfd;
   3676  1.7  christos   obj_attribute *in_attr, *in_attrs;
   3677  1.7  christos   obj_attribute *out_attr, *out_attrs;
   3678  1.1  christos   bfd_boolean ret;
   3679  1.1  christos 
   3680  1.1  christos   if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info))
   3681  1.1  christos     return FALSE;
   3682  1.1  christos 
   3683  1.7  christos   obfd = info->output_bfd;
   3684  1.1  christos   in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
   3685  1.1  christos   out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
   3686  1.7  christos 
   3687  1.7  christos   /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
   3688  1.7  christos      merge non-conflicting ones.  */
   3689  1.1  christos   in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
   3690  1.7  christos   out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
   3691  1.7  christos   ret = TRUE;
   3692  1.7  christos   if (in_attr->i != out_attr->i)
   3693  1.1  christos     {
   3694  1.7  christos       int in_vec = in_attr->i & 3;
   3695  1.7  christos       int out_vec = out_attr->i & 3;
   3696  1.7  christos       static bfd *last_vec;
   3697  1.1  christos 
   3698  1.1  christos       if (in_vec == 0)
   3699  1.1  christos 	;
   3700  1.1  christos       else if (out_vec == 0)
   3701  1.1  christos 	{
   3702  1.1  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3703  1.7  christos 	  out_attr->i = in_vec;
   3704  1.1  christos 	  last_vec = ibfd;
   3705  1.7  christos 	}
   3706  1.7  christos       /* For now, allow generic to transition to AltiVec or SPE
   3707  1.7  christos 	 without a warning.  If GCC marked files with their stack
   3708  1.7  christos 	 alignment and used don't-care markings for files which are
   3709  1.7  christos 	 not affected by the vector ABI, we could warn about this
   3710  1.7  christos 	 case too.  */
   3711  1.7  christos       else if (in_vec == 1)
   3712  1.7  christos 	;
   3713  1.7  christos       else if (out_vec == 1)
   3714  1.7  christos 	{
   3715  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3716  1.7  christos 	  out_attr->i = in_vec;
   3717  1.7  christos 	  last_vec = ibfd;
   3718  1.7  christos 	}
   3719  1.7  christos       else if (out_vec < in_vec)
   3720  1.7  christos 	{
   3721  1.7  christos 	  _bfd_error_handler
   3722  1.7  christos 	    /* xgettext:c-format */
   3723  1.7  christos 	    (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
   3724  1.7  christos 	     last_vec, ibfd);
   3725  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3726  1.7  christos 	  ret = FALSE;
   3727  1.7  christos 	}
   3728  1.7  christos       else if (out_vec > in_vec)
   3729  1.1  christos 	{
   3730  1.1  christos 	  _bfd_error_handler
   3731  1.1  christos 	    /* xgettext:c-format */
   3732  1.1  christos 	    (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
   3733  1.1  christos 	     ibfd, last_vec);
   3734  1.1  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3735  1.1  christos 	  ret = FALSE;
   3736  1.1  christos 	}
   3737  1.7  christos     }
   3738  1.7  christos 
   3739  1.7  christos   /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
   3740  1.7  christos      and merge non-conflicting ones.  */
   3741  1.7  christos   in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
   3742  1.1  christos   out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
   3743  1.7  christos   if (in_attr->i != out_attr->i)
   3744  1.7  christos     {
   3745  1.7  christos       int in_struct = in_attr->i & 3;
   3746  1.7  christos       int out_struct = out_attr->i & 3;
   3747  1.7  christos       static bfd *last_struct;
   3748  1.7  christos 
   3749  1.7  christos       if (in_struct == 0 || in_struct == 3)
   3750  1.7  christos        ;
   3751  1.7  christos       else if (out_struct == 0)
   3752  1.7  christos 	{
   3753  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3754  1.7  christos 	  out_attr->i = in_struct;
   3755  1.7  christos 	  last_struct = ibfd;
   3756  1.7  christos 	}
   3757  1.7  christos       else if (out_struct < in_struct)
   3758  1.7  christos 	{
   3759  1.7  christos 	  _bfd_error_handler
   3760  1.7  christos 	    /* xgettext:c-format */
   3761  1.7  christos 	    (_("%pB uses r3/r4 for small structure returns, "
   3762  1.7  christos 	       "%pB uses memory"), last_struct, ibfd);
   3763  1.7  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3764  1.7  christos 	  ret = FALSE;
   3765  1.7  christos 	}
   3766  1.7  christos       else if (out_struct > in_struct)
   3767  1.7  christos 	{
   3768  1.7  christos 	  _bfd_error_handler
   3769  1.7  christos 	    /* xgettext:c-format */
   3770  1.7  christos 	    (_("%pB uses r3/r4 for small structure returns, "
   3771  1.7  christos 	       "%pB uses memory"), ibfd, last_struct);
   3772  1.1  christos 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3773  1.1  christos 	  ret = FALSE;
   3774  1.1  christos 	}
   3775  1.7  christos     }
   3776  1.1  christos   if (!ret)
   3777  1.1  christos     {
   3778  1.1  christos       bfd_set_error (bfd_error_bad_value);
   3779  1.1  christos       return FALSE;
   3780  1.1  christos     }
   3781  1.1  christos 
   3782  1.7  christos   /* Merge Tag_compatibility attributes and any common GNU ones.  */
   3783  1.1  christos   return _bfd_elf_merge_object_attributes (ibfd, info);
   3784  1.7  christos }
   3785  1.1  christos 
   3786  1.1  christos /* Merge backend specific data from an object file to the output
   3787  1.1  christos    object file when linking.  */
   3788  1.1  christos 
   3789  1.1  christos static bfd_boolean
   3790  1.1  christos ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
   3791  1.1  christos {
   3792  1.1  christos   bfd *obfd = info->output_bfd;
   3793  1.7  christos   flagword old_flags;
   3794  1.1  christos   flagword new_flags;
   3795  1.1  christos   bfd_boolean error;
   3796  1.7  christos 
   3797  1.1  christos   if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
   3798  1.1  christos     return TRUE;
   3799  1.1  christos 
   3800  1.1  christos   /* Check if we have the same endianness.  */
   3801  1.1  christos   if (! _bfd_generic_verify_endian_match (ibfd, info))
   3802  1.1  christos     return FALSE;
   3803  1.1  christos 
   3804  1.1  christos   if (!ppc_elf_merge_obj_attributes (ibfd, info))
   3805  1.1  christos     return FALSE;
   3806  1.1  christos 
   3807  1.1  christos   new_flags = elf_elfheader (ibfd)->e_flags;
   3808  1.1  christos   old_flags = elf_elfheader (obfd)->e_flags;
   3809  1.1  christos   if (!elf_flags_init (obfd))
   3810  1.1  christos     {
   3811  1.1  christos       /* First call, no flags set.  */
   3812  1.1  christos       elf_flags_init (obfd) = TRUE;
   3813  1.1  christos       elf_elfheader (obfd)->e_flags = new_flags;
   3814  1.1  christos     }
   3815  1.1  christos 
   3816  1.1  christos   /* Compatible flags are ok.  */
   3817  1.1  christos   else if (new_flags == old_flags)
   3818  1.1  christos     ;
   3819  1.1  christos 
   3820  1.1  christos   /* Incompatible flags.  */
   3821  1.1  christos   else
   3822  1.7  christos     {
   3823  1.7  christos       /* Warn about -mrelocatable mismatch.  Allow -mrelocatable-lib
   3824  1.1  christos 	 to be linked with either.  */
   3825  1.1  christos       error = FALSE;
   3826  1.1  christos       if ((new_flags & EF_PPC_RELOCATABLE) != 0
   3827  1.1  christos 	  && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
   3828  1.1  christos 	{
   3829  1.1  christos 	  error = TRUE;
   3830  1.7  christos 	  _bfd_error_handler
   3831  1.7  christos 	    (_("%pB: compiled with -mrelocatable and linked with "
   3832  1.1  christos 	       "modules compiled normally"), ibfd);
   3833  1.1  christos 	}
   3834  1.1  christos       else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
   3835  1.1  christos 	       && (old_flags & EF_PPC_RELOCATABLE) != 0)
   3836  1.1  christos 	{
   3837  1.1  christos 	  error = TRUE;
   3838  1.1  christos 	  _bfd_error_handler
   3839  1.1  christos 	    (_("%pB: compiled normally and linked with "
   3840  1.1  christos 	       "modules compiled with -mrelocatable"), ibfd);
   3841  1.1  christos 	}
   3842  1.1  christos 
   3843  1.1  christos       /* The output is -mrelocatable-lib iff both the input files are.  */
   3844  1.1  christos       if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
   3845  1.1  christos 	elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
   3846  1.1  christos 
   3847  1.1  christos       /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
   3848  1.1  christos 	 but each input file is either -mrelocatable or -mrelocatable-lib.  */
   3849  1.1  christos       if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
   3850  1.1  christos 	  && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
   3851  1.1  christos 	  && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
   3852  1.1  christos 	elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
   3853  1.1  christos 
   3854  1.1  christos       /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
   3855  1.1  christos 	 any module uses it.  */
   3856  1.1  christos       elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
   3857  1.7  christos 
   3858  1.7  christos       new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
   3859  1.7  christos       old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
   3860  1.7  christos 
   3861  1.7  christos       /* Warn about any other mismatches.  */
   3862  1.1  christos       if (new_flags != old_flags)
   3863  1.1  christos 	{
   3864  1.1  christos 	  error = TRUE;
   3865  1.1  christos 	  _bfd_error_handler
   3866  1.1  christos 	    /* xgettext:c-format */
   3867  1.1  christos 	    (_("%pB: uses different e_flags (%#x) fields "
   3868  1.1  christos 	       "than previous modules (%#x)"),
   3869  1.1  christos 	     ibfd, new_flags, old_flags);
   3870  1.1  christos 	}
   3871  1.1  christos 
   3872  1.1  christos       if (error)
   3873  1.1  christos 	{
   3874  1.1  christos 	  bfd_set_error (bfd_error_bad_value);
   3875  1.7  christos 	  return FALSE;
   3876  1.7  christos 	}
   3877  1.7  christos     }
   3878  1.7  christos 
   3879  1.3  christos   return TRUE;
   3880  1.7  christos }
   3881  1.7  christos 
   3882  1.7  christos static void
   3883  1.9  christos ppc_elf_vle_split16 (bfd *input_bfd,
   3884  1.7  christos 		     asection *input_section,
   3885  1.7  christos 		     unsigned long offset,
   3886  1.9  christos 		     bfd_byte *loc,
   3887  1.7  christos 		     bfd_vma value,
   3888  1.7  christos 		     split16_format_type split16_format,
   3889  1.7  christos 		     bfd_boolean fixup)
   3890  1.7  christos {
   3891  1.7  christos   unsigned int insn, opcode;
   3892  1.7  christos 
   3893  1.7  christos   insn = bfd_get_32 (input_bfd, loc);
   3894  1.7  christos   opcode = insn & E_OPCODE_MASK;
   3895  1.7  christos   if (opcode == E_OR2I_INSN
   3896  1.7  christos       || opcode == E_AND2I_DOT_INSN
   3897  1.7  christos       || opcode == E_OR2IS_INSN
   3898  1.7  christos       || opcode == E_LIS_INSN
   3899  1.7  christos       || opcode == E_AND2IS_DOT_INSN)
   3900  1.7  christos     {
   3901  1.7  christos       if (split16_format != split16a_type)
   3902  1.7  christos 	{
   3903  1.7  christos 	  if (fixup)
   3904  1.7  christos 	    split16_format = split16a_type;
   3905  1.7  christos 	  else
   3906  1.7  christos 	    _bfd_error_handler
   3907  1.7  christos 	      /* xgettext:c-format */
   3908  1.7  christos 	      (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
   3909  1.7  christos 	       input_bfd, input_section, offset, opcode);
   3910  1.7  christos 	}
   3911  1.7  christos     }
   3912  1.7  christos   else if (opcode == E_ADD2I_DOT_INSN
   3913  1.7  christos 	   || opcode == E_ADD2IS_INSN
   3914  1.7  christos 	   || opcode == E_CMP16I_INSN
   3915  1.7  christos 	   || opcode == E_MULL2I_INSN
   3916  1.7  christos 	   || opcode == E_CMPL16I_INSN
   3917  1.7  christos 	   || opcode == E_CMPH16I_INSN
   3918  1.7  christos 	   || opcode == E_CMPHL16I_INSN)
   3919  1.7  christos     {
   3920  1.7  christos       if (split16_format != split16d_type)
   3921  1.7  christos 	{
   3922  1.7  christos 	  if (fixup)
   3923  1.9  christos 	    split16_format = split16d_type;
   3924  1.9  christos 	  else
   3925  1.9  christos 	    _bfd_error_handler
   3926  1.9  christos 	      /* xgettext:c-format */
   3927  1.9  christos 	      (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
   3928  1.9  christos 	       input_bfd, input_section, offset, opcode);
   3929  1.9  christos 	}
   3930  1.9  christos     }
   3931  1.9  christos   if (split16_format == split16a_type)
   3932  1.9  christos     {
   3933  1.9  christos       insn &= ~((0xf800 << 5) | 0x7ff);
   3934  1.9  christos       insn |= (value & 0xf800) << 5;
   3935  1.9  christos       if ((insn & E_LI_MASK) == E_LI_INSN)
   3936  1.9  christos 	{
   3937  1.9  christos 	  /* Hack for e_li.  Extend sign.  */
   3938  1.9  christos 	  insn &= ~(0xf0000 >> 5);
   3939  1.7  christos 	  insn |= (-(value & 0x8000) & 0xf0000) >> 5;
   3940  1.7  christos 	}
   3941  1.7  christos     }
   3942  1.1  christos   else
   3943  1.7  christos     {
   3944  1.7  christos       insn &= ~((0xf800 << 10) | 0x7ff);
   3945  1.1  christos       insn |= (value & 0xf800) << 10;
   3946  1.7  christos     }
   3947  1.1  christos   insn |= value & 0x7ff;
   3948  1.3  christos   bfd_put_32 (input_bfd, insn, loc);
   3949  1.7  christos }
   3950  1.7  christos 
   3951  1.7  christos static void
   3952  1.7  christos ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
   3953  1.7  christos {
   3954  1.7  christos   unsigned int insn;
   3955  1.3  christos 
   3956  1.3  christos   insn = bfd_get_32 (output_bfd, loc);
   3957  1.1  christos   /* We have an li20 field, bits 17..20, 11..15, 21..31.  */
   3958  1.1  christos   /* Top 4 bits of value to 17..20.  */
   3959  1.1  christos   insn |= (value & 0xf0000) >> 5;
   3960  1.1  christos   /* Next 5 bits of the value to 11..15.  */
   3961  1.1  christos   insn |= (value & 0xf800) << 5;
   3962  1.1  christos   /* And the final 11 bits of the value to bits 21 to 31.  */
   3963  1.1  christos   insn |= value & 0x7ff;
   3964  1.3  christos   bfd_put_32 (output_bfd, insn, loc);
   3965  1.1  christos }
   3966  1.1  christos 
   3967  1.1  christos 
   3968  1.1  christos /* Choose which PLT scheme to use, and set .plt flags appropriately.
   3970  1.1  christos    Returns -1 on error, 0 for old PLT, 1 for new PLT.  */
   3971  1.1  christos int
   3972  1.1  christos ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
   3973  1.1  christos 			   struct bfd_link_info *info)
   3974  1.1  christos {
   3975  1.3  christos   struct ppc_elf_link_hash_table *htab;
   3976  1.1  christos   flagword flags;
   3977  1.3  christos 
   3978  1.1  christos   htab = ppc_elf_hash_table (info);
   3979  1.1  christos 
   3980  1.1  christos   if (htab->plt_type == PLT_UNSET)
   3981  1.1  christos     {
   3982  1.1  christos       struct elf_link_hash_entry *h;
   3983  1.1  christos 
   3984  1.1  christos       if (htab->params->plt_style == PLT_OLD)
   3985  1.7  christos 	htab->plt_type = PLT_OLD;
   3986  1.1  christos       else if (bfd_link_pic (info)
   3987  1.1  christos 	       && htab->elf.dynamic_sections_created
   3988  1.1  christos 	       && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
   3989  1.1  christos 					     FALSE, FALSE, TRUE)) != NULL
   3990  1.1  christos 	       && (h->type == STT_FUNC
   3991  1.1  christos 		   || h->needs_plt)
   3992  1.1  christos 	       && h->ref_regular
   3993  1.1  christos 	       && !(SYMBOL_CALLS_LOCAL (info, h)
   3994  1.1  christos 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
   3995  1.1  christos 	{
   3996  1.3  christos 	  /* Profiling of shared libs (and pies) is not supported with
   3997  1.1  christos 	     secure plt, because ppc32 does profiling before a
   3998  1.1  christos 	     function prologue and a secure plt pic call stubs needs
   3999  1.1  christos 	     r30 to be set up.  */
   4000  1.1  christos 	  htab->plt_type = PLT_OLD;
   4001  1.1  christos 	}
   4002  1.1  christos       else
   4003  1.1  christos 	{
   4004  1.3  christos 	  bfd *ibfd;
   4005  1.1  christos 	  enum ppc_elf_plt_type plt_type = htab->params->plt_style;
   4006  1.1  christos 
   4007  1.1  christos 	  /* Look through the reloc flags left by ppc_elf_check_relocs.
   4008  1.1  christos 	     Use the old style bss plt if a file makes plt calls
   4009  1.1  christos 	     without using the new relocs, and if ld isn't given
   4010  1.1  christos 	     --secure-plt and we never see REL16 relocs.  */
   4011  1.1  christos 	  if (plt_type == PLT_UNSET)
   4012  1.1  christos 	    plt_type = PLT_OLD;
   4013  1.1  christos 	  for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
   4014  1.1  christos 	    if (is_ppc_elf (ibfd))
   4015  1.1  christos 	      {
   4016  1.1  christos 		if (ppc_elf_tdata (ibfd)->has_rel16)
   4017  1.1  christos 		  plt_type = PLT_NEW;
   4018  1.1  christos 		else if (ppc_elf_tdata (ibfd)->makes_plt_call)
   4019  1.3  christos 		  {
   4020  1.1  christos 		    plt_type = PLT_OLD;
   4021  1.1  christos 		    htab->old_bfd = ibfd;
   4022  1.7  christos 		    break;
   4023  1.1  christos 		  }
   4024  1.7  christos 	      }
   4025  1.1  christos 	  htab->plt_type = plt_type;
   4026  1.1  christos 	}
   4027  1.1  christos     }
   4028  1.1  christos   if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
   4029  1.1  christos     {
   4030  1.1  christos       if (htab->old_bfd != NULL)
   4031  1.1  christos 	_bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
   4032  1.1  christos       else
   4033  1.1  christos 	_bfd_error_handler (_("bss-plt forced by profiling"));
   4034  1.1  christos     }
   4035  1.7  christos 
   4036  1.9  christos   BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
   4037  1.1  christos 
   4038  1.1  christos   if (htab->plt_type == PLT_NEW)
   4039  1.1  christos     {
   4040  1.7  christos       flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
   4041  1.9  christos 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   4042  1.1  christos 
   4043  1.1  christos       /* The new PLT is a loaded section.  */
   4044  1.1  christos       if (htab->elf.splt != NULL
   4045  1.1  christos 	  && !bfd_set_section_flags (htab->elf.splt, flags))
   4046  1.1  christos 	return -1;
   4047  1.1  christos 
   4048  1.9  christos       /* The new GOT is not executable.  */
   4049  1.1  christos       if (htab->elf.sgot != NULL
   4050  1.1  christos 	  && !bfd_set_section_flags (htab->elf.sgot, flags))
   4051  1.1  christos 	return -1;
   4052  1.1  christos     }
   4053  1.1  christos   else
   4054  1.1  christos     {
   4055  1.1  christos       /* Stop an unused .glink section from affecting .text alignment.  */
   4056  1.1  christos       if (htab->glink != NULL
   4057  1.1  christos 	  && !bfd_set_section_alignment (htab->glink, 0))
   4058  1.1  christos 	return -1;
   4059  1.1  christos     }
   4060  1.1  christos   return htab->plt_type == PLT_NEW;
   4061  1.1  christos }
   4062  1.1  christos 
   4063  1.1  christos /* Return the section that should be marked against GC for a given
   4065  1.1  christos    relocation.  */
   4066  1.1  christos 
   4067  1.1  christos static asection *
   4068  1.1  christos ppc_elf_gc_mark_hook (asection *sec,
   4069  1.1  christos 		      struct bfd_link_info *info,
   4070  1.1  christos 		      Elf_Internal_Rela *rel,
   4071  1.1  christos 		      struct elf_link_hash_entry *h,
   4072  1.1  christos 		      Elf_Internal_Sym *sym)
   4073  1.1  christos {
   4074  1.1  christos   if (h != NULL)
   4075  1.1  christos     switch (ELF32_R_TYPE (rel->r_info))
   4076  1.7  christos       {
   4077  1.7  christos       case R_PPC_GNU_VTINHERIT:
   4078  1.7  christos       case R_PPC_GNU_VTENTRY:
   4079  1.7  christos 	return NULL;
   4080  1.7  christos       }
   4081  1.7  christos 
   4082  1.7  christos   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
   4083  1.1  christos }
   4084  1.7  christos 
   4085  1.1  christos static bfd_boolean
   4086  1.7  christos get_sym_h (struct elf_link_hash_entry **hp,
   4087  1.7  christos 	   Elf_Internal_Sym **symp,
   4088  1.7  christos 	   asection **symsecp,
   4089  1.7  christos 	   unsigned char **tls_maskp,
   4090  1.1  christos 	   Elf_Internal_Sym **locsymsp,
   4091  1.7  christos 	   unsigned long r_symndx,
   4092  1.7  christos 	   bfd *ibfd)
   4093  1.7  christos {
   4094  1.7  christos   Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4095  1.1  christos 
   4096  1.7  christos   if (r_symndx >= symtab_hdr->sh_info)
   4097  1.7  christos     {
   4098  1.1  christos       struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
   4099  1.7  christos       struct elf_link_hash_entry *h;
   4100  1.7  christos 
   4101  1.1  christos       h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4102  1.7  christos       while (h->root.type == bfd_link_hash_indirect
   4103  1.1  christos 	     || h->root.type == bfd_link_hash_warning)
   4104  1.7  christos 	h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4105  1.7  christos 
   4106  1.7  christos       if (hp != NULL)
   4107  1.7  christos 	*hp = h;
   4108  1.7  christos 
   4109  1.1  christos       if (symp != NULL)
   4110  1.1  christos 	*symp = NULL;
   4111  1.7  christos 
   4112  1.7  christos       if (symsecp != NULL)
   4113  1.7  christos 	{
   4114  1.7  christos 	  asection *symsec = NULL;
   4115  1.7  christos 	  if (h->root.type == bfd_link_hash_defined
   4116  1.7  christos 	      || h->root.type == bfd_link_hash_defweak)
   4117  1.7  christos 	    symsec = h->root.u.def.section;
   4118  1.1  christos 	  *symsecp = symsec;
   4119  1.7  christos 	}
   4120  1.7  christos 
   4121  1.7  christos       if (tls_maskp != NULL)
   4122  1.7  christos 	*tls_maskp = &ppc_elf_hash_entry (h)->tls_mask;
   4123  1.7  christos     }
   4124  1.7  christos   else
   4125  1.7  christos     {
   4126  1.7  christos       Elf_Internal_Sym *sym;
   4127  1.7  christos       Elf_Internal_Sym *locsyms = *locsymsp;
   4128  1.7  christos 
   4129  1.1  christos       if (locsyms == NULL)
   4130  1.7  christos 	{
   4131  1.1  christos 	  locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
   4132  1.7  christos 	  if (locsyms == NULL)
   4133  1.7  christos 	    locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
   4134  1.1  christos 					    symtab_hdr->sh_info,
   4135  1.7  christos 					    0, NULL, NULL, NULL);
   4136  1.7  christos 	  if (locsyms == NULL)
   4137  1.1  christos 	    return FALSE;
   4138  1.7  christos 	  *locsymsp = locsyms;
   4139  1.7  christos 	}
   4140  1.1  christos       sym = locsyms + r_symndx;
   4141  1.7  christos 
   4142  1.7  christos       if (hp != NULL)
   4143  1.7  christos 	*hp = NULL;
   4144  1.7  christos 
   4145  1.1  christos       if (symp != NULL)
   4146  1.7  christos 	*symp = sym;
   4147  1.7  christos 
   4148  1.7  christos       if (symsecp != NULL)
   4149  1.1  christos 	*symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
   4150  1.7  christos 
   4151  1.7  christos       if (tls_maskp != NULL)
   4152  1.7  christos 	{
   4153  1.7  christos 	  bfd_signed_vma *local_got;
   4154  1.7  christos 	  unsigned char *tls_mask;
   4155  1.1  christos 
   4156  1.7  christos 	  tls_mask = NULL;
   4157  1.1  christos 	  local_got = elf_local_got_refcounts (ibfd);
   4158  1.1  christos 	  if (local_got != NULL)
   4159  1.1  christos 	    {
   4160  1.1  christos 	      struct plt_entry **local_plt = (struct plt_entry **)
   4161  1.1  christos 		(local_got + symtab_hdr->sh_info);
   4162  1.7  christos 	      unsigned char *lgot_masks = (unsigned char *)
   4163  1.7  christos 		(local_plt + symtab_hdr->sh_info);
   4164  1.1  christos 	      tls_mask = &lgot_masks[r_symndx];
   4165  1.7  christos 	    }
   4166  1.7  christos 	  *tls_maskp = tls_mask;
   4167  1.1  christos 	}
   4168  1.1  christos     }
   4169  1.7  christos   return TRUE;
   4170  1.7  christos }
   4171  1.7  christos 
   4172  1.1  christos /* Analyze inline PLT call relocations to see whether calls to locally
   4174  1.7  christos    defined functions can be converted to direct calls.  */
   4175  1.7  christos 
   4176  1.7  christos bfd_boolean
   4177  1.7  christos ppc_elf_inline_plt (struct bfd_link_info *info)
   4178  1.7  christos {
   4179  1.7  christos   struct ppc_elf_link_hash_table *htab;
   4180  1.7  christos   bfd *ibfd;
   4181  1.7  christos   asection *sec;
   4182  1.7  christos   bfd_vma low_vma, high_vma, limit;
   4183  1.7  christos 
   4184  1.7  christos   htab = ppc_elf_hash_table (info);
   4185  1.7  christos   if (htab == NULL)
   4186  1.7  christos     return FALSE;
   4187  1.7  christos 
   4188  1.7  christos   /* A bl insn can reach -0x2000000 to 0x1fffffc.  The limit is
   4189  1.7  christos      reduced somewhat to cater for possible stubs that might be added
   4190  1.7  christos      between the call and its destination.  */
   4191  1.3  christos   limit = 0x1e00000;
   4192  1.7  christos   low_vma = -1;
   4193  1.7  christos   high_vma = 0;
   4194  1.7  christos   for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
   4195  1.7  christos     if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
   4196  1.7  christos       {
   4197  1.7  christos 	if (low_vma > sec->vma)
   4198  1.7  christos 	  low_vma = sec->vma;
   4199  1.7  christos 	if (high_vma < sec->vma + sec->size)
   4200  1.7  christos 	  high_vma = sec->vma + sec->size;
   4201  1.7  christos       }
   4202  1.7  christos 
   4203  1.7  christos   /* If a "bl" can reach anywhere in local code sections, then we can
   4204  1.7  christos      convert all inline PLT sequences to direct calls when the symbol
   4205  1.7  christos      is local.  */
   4206  1.7  christos   if (high_vma - low_vma < limit)
   4207  1.7  christos     {
   4208  1.7  christos       htab->can_convert_all_inline_plt = 1;
   4209  1.7  christos       return TRUE;
   4210  1.7  christos     }
   4211  1.7  christos 
   4212  1.7  christos   /* Otherwise, go looking through relocs for cases where a direct
   4213  1.7  christos      call won't reach.  Mark the symbol on any such reloc to disable
   4214  1.7  christos      the optimization and keep the PLT entry as it seems likely that
   4215  1.7  christos      this will be better than creating trampolines.  Note that this
   4216  1.7  christos      will disable the optimization for all inline PLT calls to a
   4217  1.7  christos      particular symbol, not just those that won't reach.  The
   4218  1.7  christos      difficulty in doing a more precise optimization is that the
   4219  1.7  christos      linker needs to make a decision depending on whether a
   4220  1.7  christos      particular R_PPC_PLTCALL insn can be turned into a direct
   4221  1.7  christos      call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in
   4222  1.7  christos      the sequence, and there is nothing that ties those relocs
   4223  1.7  christos      together except their symbol.  */
   4224  1.7  christos 
   4225  1.7  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   4226  1.7  christos     {
   4227  1.7  christos       Elf_Internal_Shdr *symtab_hdr;
   4228  1.7  christos       Elf_Internal_Sym *local_syms;
   4229  1.7  christos 
   4230  1.7  christos       if (!is_ppc_elf (ibfd))
   4231  1.7  christos 	continue;
   4232  1.7  christos 
   4233  1.7  christos       local_syms = NULL;
   4234  1.7  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   4235  1.7  christos 
   4236  1.7  christos       for (sec = ibfd->sections; sec != NULL; sec = sec->next)
   4237  1.7  christos 	if (sec->has_pltcall
   4238  1.8       rin 	    && !bfd_is_abs_section (sec->output_section))
   4239  1.7  christos 	  {
   4240  1.7  christos 	    Elf_Internal_Rela *relstart, *rel, *relend;
   4241  1.7  christos 
   4242  1.7  christos 	    /* Read the relocations.  */
   4243  1.7  christos 	    relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
   4244  1.7  christos 						  info->keep_memory);
   4245  1.7  christos 	    if (relstart == NULL)
   4246  1.7  christos 	      return FALSE;
   4247  1.7  christos 
   4248  1.7  christos 	    relend = relstart + sec->reloc_count;
   4249  1.7  christos 	    for (rel = relstart; rel < relend; rel++)
   4250  1.7  christos 	      {
   4251  1.7  christos 		enum elf_ppc_reloc_type r_type;
   4252  1.7  christos 		unsigned long r_symndx;
   4253  1.7  christos 		asection *sym_sec;
   4254  1.7  christos 		struct elf_link_hash_entry *h;
   4255  1.7  christos 		Elf_Internal_Sym *sym;
   4256  1.7  christos 		unsigned char *tls_maskp;
   4257  1.7  christos 
   4258  1.7  christos 		r_type = ELF32_R_TYPE (rel->r_info);
   4259  1.7  christos 		if (r_type != R_PPC_PLTCALL)
   4260  1.7  christos 		  continue;
   4261  1.7  christos 
   4262  1.7  christos 		r_symndx = ELF32_R_SYM (rel->r_info);
   4263  1.7  christos 		if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
   4264  1.7  christos 				r_symndx, ibfd))
   4265  1.7  christos 		  {
   4266  1.7  christos 		    if (elf_section_data (sec)->relocs != relstart)
   4267  1.7  christos 		      free (relstart);
   4268  1.7  christos 		    if (local_syms != NULL
   4269  1.7  christos 			&& symtab_hdr->contents != (unsigned char *) local_syms)
   4270  1.7  christos 		      free (local_syms);
   4271  1.7  christos 		    return FALSE;
   4272  1.7  christos 		  }
   4273  1.7  christos 
   4274  1.7  christos 		if (sym_sec != NULL && sym_sec->output_section != NULL)
   4275  1.7  christos 		  {
   4276  1.7  christos 		    bfd_vma from, to;
   4277  1.7  christos 		    if (h != NULL)
   4278  1.7  christos 		      to = h->root.u.def.value;
   4279  1.7  christos 		    else
   4280  1.7  christos 		      to = sym->st_value;
   4281  1.7  christos 		    to += (rel->r_addend
   4282  1.7  christos 			   + sym_sec->output_offset
   4283  1.7  christos 			   + sym_sec->output_section->vma);
   4284  1.7  christos 		    from = (rel->r_offset
   4285  1.7  christos 			    + sec->output_offset
   4286  1.7  christos 			    + sec->output_section->vma);
   4287  1.7  christos 		    if (to - from + limit < 2 * limit)
   4288  1.7  christos 		      *tls_maskp &= ~PLT_KEEP;
   4289  1.7  christos 		  }
   4290  1.7  christos 	      }
   4291  1.7  christos 	    if (elf_section_data (sec)->relocs != relstart)
   4292  1.7  christos 	      free (relstart);
   4293  1.7  christos 	  }
   4294  1.7  christos 
   4295  1.7  christos       if (local_syms != NULL
   4296  1.7  christos 	  && symtab_hdr->contents != (unsigned char *) local_syms)
   4297  1.7  christos 	{
   4298  1.7  christos 	  if (!info->keep_memory)
   4299  1.7  christos 	    free (local_syms);
   4300  1.7  christos 	  else
   4301  1.7  christos 	    symtab_hdr->contents = (unsigned char *) local_syms;
   4302  1.7  christos 	}
   4303  1.7  christos     }
   4304  1.7  christos 
   4305  1.7  christos   return TRUE;
   4306  1.7  christos }
   4307  1.7  christos 
   4308  1.7  christos /* Set plt output section type, htab->tls_get_addr, and call the
   4309  1.7  christos    generic ELF tls_setup function.  */
   4310  1.7  christos 
   4311  1.7  christos asection *
   4312  1.1  christos ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
   4313  1.1  christos {
   4314  1.1  christos   struct ppc_elf_link_hash_table *htab;
   4315  1.1  christos 
   4316  1.1  christos   htab = ppc_elf_hash_table (info);
   4317  1.1  christos   htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
   4318  1.1  christos 					     FALSE, FALSE, TRUE);
   4319  1.1  christos   if (htab->plt_type != PLT_NEW)
   4320  1.1  christos     htab->params->no_tls_get_addr_opt = TRUE;
   4321  1.1  christos 
   4322  1.1  christos   if (!htab->params->no_tls_get_addr_opt)
   4323  1.1  christos     {
   4324  1.1  christos       struct elf_link_hash_entry *opt, *tga;
   4325  1.1  christos       opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
   4326  1.1  christos 				  FALSE, FALSE, TRUE);
   4327  1.1  christos       if (opt != NULL
   4328  1.1  christos 	  && (opt->root.type == bfd_link_hash_defined
   4329  1.1  christos 	      || opt->root.type == bfd_link_hash_defweak))
   4330  1.7  christos 	{
   4331  1.1  christos 	  /* If glibc supports an optimized __tls_get_addr call stub,
   4332  1.1  christos 	     signalled by the presence of __tls_get_addr_opt, and we'll
   4333  1.1  christos 	     be calling __tls_get_addr via a plt call stub, then
   4334  1.1  christos 	     make __tls_get_addr point to __tls_get_addr_opt.  */
   4335  1.1  christos 	  tga = htab->tls_get_addr;
   4336  1.1  christos 	  if (htab->elf.dynamic_sections_created
   4337  1.1  christos 	      && tga != NULL
   4338  1.1  christos 	      && (tga->type == STT_FUNC
   4339  1.1  christos 		  || tga->needs_plt)
   4340  1.1  christos 	      && !(SYMBOL_CALLS_LOCAL (info, tga)
   4341  1.7  christos 		   || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
   4342  1.1  christos 	    {
   4343  1.1  christos 	      struct plt_entry *ent;
   4344  1.1  christos 	      for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
   4345  1.1  christos 		if (ent->plt.refcount > 0)
   4346  1.1  christos 		  break;
   4347  1.1  christos 	      if (ent != NULL)
   4348  1.1  christos 		{
   4349  1.1  christos 		  tga->root.type = bfd_link_hash_indirect;
   4350  1.1  christos 		  tga->root.u.i.link = &opt->root;
   4351  1.1  christos 		  ppc_elf_copy_indirect_symbol (info, opt, tga);
   4352  1.1  christos 		  opt->mark = 1;
   4353  1.1  christos 		  if (opt->dynindx != -1)
   4354  1.1  christos 		    {
   4355  1.1  christos 		      /* Use __tls_get_addr_opt in dynamic relocations.  */
   4356  1.3  christos 		      opt->dynindx = -1;
   4357  1.1  christos 		      _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
   4358  1.1  christos 					      opt->dynstr_index);
   4359  1.7  christos 		      if (!bfd_elf_link_record_dynamic_symbol (info, opt))
   4360  1.7  christos 			return FALSE;
   4361  1.1  christos 		    }
   4362  1.7  christos 		  htab->tls_get_addr = opt;
   4363  1.7  christos 		}
   4364  1.1  christos 	    }
   4365  1.1  christos 	}
   4366  1.1  christos       else
   4367  1.1  christos 	htab->params->no_tls_get_addr_opt = TRUE;
   4368  1.1  christos     }
   4369  1.1  christos   if (htab->plt_type == PLT_NEW
   4370  1.1  christos       && htab->elf.splt != NULL
   4371  1.1  christos       && htab->elf.splt->output_section != NULL)
   4372  1.1  christos     {
   4373  1.1  christos       elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
   4374  1.1  christos       elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
   4375  1.1  christos     }
   4376  1.1  christos 
   4377  1.1  christos   return _bfd_elf_tls_setup (obfd, info);
   4378  1.1  christos }
   4379  1.1  christos 
   4380  1.1  christos /* Return TRUE iff REL is a branch reloc with a global symbol matching
   4381  1.1  christos    HASH.  */
   4382  1.1  christos 
   4383  1.1  christos static bfd_boolean
   4384  1.1  christos branch_reloc_hash_match (const bfd *ibfd,
   4385  1.1  christos 			 const Elf_Internal_Rela *rel,
   4386  1.1  christos 			 const struct elf_link_hash_entry *hash)
   4387  1.1  christos {
   4388  1.1  christos   Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4389  1.1  christos   enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
   4390  1.1  christos   unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
   4391  1.1  christos 
   4392  1.1  christos   if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
   4393  1.1  christos     {
   4394  1.1  christos       struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
   4395  1.1  christos       struct elf_link_hash_entry *h;
   4396  1.1  christos 
   4397  1.1  christos       h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4398  1.1  christos       while (h->root.type == bfd_link_hash_indirect
   4399  1.1  christos 	     || h->root.type == bfd_link_hash_warning)
   4400  1.1  christos 	h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4401  1.1  christos       if (h == hash)
   4402  1.1  christos 	return TRUE;
   4403  1.1  christos     }
   4404  1.1  christos   return FALSE;
   4405  1.1  christos }
   4406  1.1  christos 
   4407  1.1  christos /* Run through all the TLS relocs looking for optimization
   4408  1.3  christos    opportunities.  */
   4409  1.1  christos 
   4410  1.1  christos bfd_boolean
   4411  1.1  christos ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
   4412  1.1  christos 		      struct bfd_link_info *info)
   4413  1.1  christos {
   4414  1.1  christos   bfd *ibfd;
   4415  1.1  christos   asection *sec;
   4416  1.1  christos   struct ppc_elf_link_hash_table *htab;
   4417  1.1  christos   int pass;
   4418  1.1  christos 
   4419  1.1  christos   if (!bfd_link_executable (info))
   4420  1.1  christos     return TRUE;
   4421  1.1  christos 
   4422  1.3  christos   htab = ppc_elf_hash_table (info);
   4423  1.1  christos   if (htab == NULL)
   4424  1.1  christos     return FALSE;
   4425  1.1  christos 
   4426  1.1  christos   /* Make two passes through the relocs.  First time check that tls
   4427  1.1  christos      relocs involved in setting up a tls_get_addr call are indeed
   4428  1.1  christos      followed by such a call.  If they are not, don't do any tls
   4429  1.1  christos      optimization.  On the second pass twiddle tls_mask flags to
   4430  1.1  christos      notify relocate_section that optimization can be done, and
   4431  1.1  christos      adjust got and plt refcounts.  */
   4432  1.1  christos   for (pass = 0; pass < 2; ++pass)
   4433  1.1  christos     for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   4434  1.1  christos       {
   4435  1.1  christos 	Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4436  1.1  christos 	asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
   4437  1.1  christos 
   4438  1.1  christos 	for (sec = ibfd->sections; sec != NULL; sec = sec->next)
   4439  1.1  christos 	  if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
   4440  1.1  christos 	    {
   4441  1.1  christos 	      Elf_Internal_Rela *relstart, *rel, *relend;
   4442  1.1  christos 	      int expecting_tls_get_addr = 0;
   4443  1.1  christos 
   4444  1.1  christos 	      /* Read the relocations.  */
   4445  1.7  christos 	      relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
   4446  1.7  christos 						    info->keep_memory);
   4447  1.1  christos 	      if (relstart == NULL)
   4448  1.1  christos 		return FALSE;
   4449  1.1  christos 
   4450  1.1  christos 	      relend = relstart + sec->reloc_count;
   4451  1.1  christos 	      for (rel = relstart; rel < relend; rel++)
   4452  1.1  christos 		{
   4453  1.1  christos 		  enum elf_ppc_reloc_type r_type;
   4454  1.1  christos 		  unsigned long r_symndx;
   4455  1.1  christos 		  struct elf_link_hash_entry *h = NULL;
   4456  1.1  christos 		  unsigned char *tls_mask;
   4457  1.1  christos 		  unsigned char tls_set, tls_clear;
   4458  1.1  christos 		  bfd_boolean is_local;
   4459  1.1  christos 		  bfd_signed_vma *got_count;
   4460  1.1  christos 
   4461  1.1  christos 		  r_symndx = ELF32_R_SYM (rel->r_info);
   4462  1.9  christos 		  if (r_symndx >= symtab_hdr->sh_info)
   4463  1.1  christos 		    {
   4464  1.1  christos 		      struct elf_link_hash_entry **sym_hashes;
   4465  1.1  christos 
   4466  1.1  christos 		      sym_hashes = elf_sym_hashes (ibfd);
   4467  1.1  christos 		      h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4468  1.1  christos 		      while (h->root.type == bfd_link_hash_indirect
   4469  1.1  christos 			     || h->root.type == bfd_link_hash_warning)
   4470  1.1  christos 			h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4471  1.9  christos 		    }
   4472  1.1  christos 
   4473  1.1  christos 		  is_local = SYMBOL_REFERENCES_LOCAL (info, h);
   4474  1.1  christos 		  r_type = ELF32_R_TYPE (rel->r_info);
   4475  1.1  christos 		  /* If this section has old-style __tls_get_addr calls
   4476  1.1  christos 		     without marker relocs, then check that each
   4477  1.1  christos 		     __tls_get_addr call reloc is preceded by a reloc
   4478  1.1  christos 		     that conceivably belongs to the __tls_get_addr arg
   4479  1.1  christos 		     setup insn.  If we don't find matching arg setup
   4480  1.1  christos 		     relocs, don't do any tls optimization.  */
   4481  1.1  christos 		  if (pass == 0
   4482  1.1  christos 		      && sec->nomark_tls_get_addr
   4483  1.1  christos 		      && h != NULL
   4484  1.1  christos 		      && h == htab->tls_get_addr
   4485  1.1  christos 		      && !expecting_tls_get_addr
   4486  1.1  christos 		      && is_branch_reloc (r_type))
   4487  1.1  christos 		    {
   4488  1.1  christos 		      info->callbacks->minfo ("%H __tls_get_addr lost arg, "
   4489  1.1  christos 					      "TLS optimization disabled\n",
   4490  1.1  christos 					      ibfd, sec, rel->r_offset);
   4491  1.7  christos 		      if (elf_section_data (sec)->relocs != relstart)
   4492  1.1  christos 			free (relstart);
   4493  1.1  christos 		      return TRUE;
   4494  1.1  christos 		    }
   4495  1.1  christos 
   4496  1.1  christos 		  expecting_tls_get_addr = 0;
   4497  1.1  christos 		  switch (r_type)
   4498  1.1  christos 		    {
   4499  1.1  christos 		    case R_PPC_GOT_TLSLD16:
   4500  1.1  christos 		    case R_PPC_GOT_TLSLD16_LO:
   4501  1.1  christos 		      expecting_tls_get_addr = 1;
   4502  1.1  christos 		      /* Fall through.  */
   4503  1.1  christos 
   4504  1.1  christos 		    case R_PPC_GOT_TLSLD16_HI:
   4505  1.1  christos 		    case R_PPC_GOT_TLSLD16_HA:
   4506  1.1  christos 		      /* These relocs should never be against a symbol
   4507  1.1  christos 			 defined in a shared lib.  Leave them alone if
   4508  1.1  christos 			 that turns out to be the case.  */
   4509  1.7  christos 		      if (!is_local)
   4510  1.1  christos 			continue;
   4511  1.1  christos 
   4512  1.1  christos 		      /* LD -> LE */
   4513  1.1  christos 		      tls_set = 0;
   4514  1.1  christos 		      tls_clear = TLS_LD;
   4515  1.1  christos 		      break;
   4516  1.1  christos 
   4517  1.1  christos 		    case R_PPC_GOT_TLSGD16:
   4518  1.9  christos 		    case R_PPC_GOT_TLSGD16_LO:
   4519  1.1  christos 		      expecting_tls_get_addr = 1;
   4520  1.1  christos 		      /* Fall through.  */
   4521  1.1  christos 
   4522  1.1  christos 		    case R_PPC_GOT_TLSGD16_HI:
   4523  1.1  christos 		    case R_PPC_GOT_TLSGD16_HA:
   4524  1.1  christos 		      if (is_local)
   4525  1.1  christos 			/* GD -> LE */
   4526  1.1  christos 			tls_set = 0;
   4527  1.1  christos 		      else
   4528  1.1  christos 			/* GD -> IE */
   4529  1.1  christos 			tls_set = TLS_TLS | TLS_GDIE;
   4530  1.1  christos 		      tls_clear = TLS_GD;
   4531  1.1  christos 		      break;
   4532  1.1  christos 
   4533  1.1  christos 		    case R_PPC_GOT_TPREL16:
   4534  1.1  christos 		    case R_PPC_GOT_TPREL16_LO:
   4535  1.1  christos 		    case R_PPC_GOT_TPREL16_HI:
   4536  1.9  christos 		    case R_PPC_GOT_TPREL16_HA:
   4537  1.9  christos 		      if (is_local)
   4538  1.9  christos 			{
   4539  1.9  christos 			  /* IE -> LE */
   4540  1.1  christos 			  tls_set = 0;
   4541  1.7  christos 			  tls_clear = TLS_TPREL;
   4542  1.7  christos 			  break;
   4543  1.7  christos 			}
   4544  1.7  christos 		      else
   4545  1.7  christos 			continue;
   4546  1.7  christos 
   4547  1.7  christos 		    case R_PPC_TLSLD:
   4548  1.7  christos 		      if (!is_local)
   4549  1.7  christos 			continue;
   4550  1.7  christos 		      /* Fall through.  */
   4551  1.7  christos 		    case R_PPC_TLSGD:
   4552  1.7  christos 		      if (rel + 1 < relend
   4553  1.7  christos 			  && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   4554  1.7  christos 			{
   4555  1.7  christos 			  if (pass != 0
   4556  1.7  christos 			      && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ)
   4557  1.7  christos 			    {
   4558  1.7  christos 			      r_type = ELF32_R_TYPE (rel[1].r_info);
   4559  1.7  christos 			      r_symndx = ELF32_R_SYM (rel[1].r_info);
   4560  1.7  christos 			      if (r_symndx >= symtab_hdr->sh_info)
   4561  1.7  christos 				{
   4562  1.7  christos 				  struct elf_link_hash_entry **sym_hashes;
   4563  1.7  christos 
   4564  1.7  christos 				  sym_hashes = elf_sym_hashes (ibfd);
   4565  1.7  christos 				  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4566  1.7  christos 				  while (h->root.type == bfd_link_hash_indirect
   4567  1.7  christos 					 || h->root.type == bfd_link_hash_warning)
   4568  1.7  christos 				    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4569  1.7  christos 				  if (h != NULL)
   4570  1.7  christos 				    {
   4571  1.7  christos 				      struct plt_entry *ent = NULL;
   4572  1.7  christos 				      bfd_vma addend = 0;
   4573  1.7  christos 
   4574  1.7  christos 				      if (bfd_link_pic (info))
   4575  1.1  christos 					addend = rel->r_addend;
   4576  1.1  christos 				      ent = find_plt_ent (&h->plt.plist,
   4577  1.1  christos 							  got2, addend);
   4578  1.1  christos 				      if (ent != NULL
   4579  1.1  christos 					  && ent->plt.refcount > 0)
   4580  1.1  christos 					ent->plt.refcount -= 1;
   4581  1.1  christos 				    }
   4582  1.1  christos 				}
   4583  1.1  christos 			    }
   4584  1.1  christos 			  continue;
   4585  1.1  christos 			}
   4586  1.1  christos 		      expecting_tls_get_addr = 2;
   4587  1.9  christos 		      tls_set = 0;
   4588  1.1  christos 		      tls_clear = 0;
   4589  1.1  christos 		      break;
   4590  1.1  christos 
   4591  1.1  christos 		    default:
   4592  1.1  christos 		      continue;
   4593  1.1  christos 		    }
   4594  1.1  christos 
   4595  1.1  christos 		  if (pass == 0)
   4596  1.1  christos 		    {
   4597  1.1  christos 		      if (!expecting_tls_get_addr
   4598  1.1  christos 			  || !sec->nomark_tls_get_addr)
   4599  1.1  christos 			continue;
   4600  1.1  christos 
   4601  1.1  christos 		      if (rel + 1 < relend
   4602  1.1  christos 			  && branch_reloc_hash_match (ibfd, rel + 1,
   4603  1.1  christos 						      htab->tls_get_addr))
   4604  1.1  christos 			continue;
   4605  1.1  christos 
   4606  1.1  christos 		      /* Uh oh, we didn't find the expected call.  We
   4607  1.1  christos 			 could just mark this symbol to exclude it
   4608  1.1  christos 			 from tls optimization but it's safer to skip
   4609  1.1  christos 			 the entire optimization.  */
   4610  1.1  christos 		      info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
   4611  1.1  christos 						"TLS optimization disabled\n"),
   4612  1.1  christos 					      ibfd, sec, rel->r_offset);
   4613  1.1  christos 		      if (elf_section_data (sec)->relocs != relstart)
   4614  1.1  christos 			free (relstart);
   4615  1.1  christos 		      return TRUE;
   4616  1.7  christos 		    }
   4617  1.1  christos 
   4618  1.1  christos 		  if (h != NULL)
   4619  1.1  christos 		    {
   4620  1.1  christos 		      tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
   4621  1.1  christos 		      got_count = &h->got.refcount;
   4622  1.1  christos 		    }
   4623  1.7  christos 		  else
   4624  1.7  christos 		    {
   4625  1.1  christos 		      bfd_signed_vma *lgot_refs;
   4626  1.1  christos 		      struct plt_entry **local_plt;
   4627  1.1  christos 		      unsigned char *lgot_masks;
   4628  1.1  christos 
   4629  1.7  christos 		      lgot_refs = elf_local_got_refcounts (ibfd);
   4630  1.7  christos 		      if (lgot_refs == NULL)
   4631  1.7  christos 			abort ();
   4632  1.7  christos 		      local_plt = (struct plt_entry **)
   4633  1.7  christos 			(lgot_refs + symtab_hdr->sh_info);
   4634  1.7  christos 		      lgot_masks = (unsigned char *)
   4635  1.7  christos 			(local_plt + symtab_hdr->sh_info);
   4636  1.7  christos 		      tls_mask = &lgot_masks[r_symndx];
   4637  1.9  christos 		      got_count = &lgot_refs[r_symndx];
   4638  1.7  christos 		    }
   4639  1.7  christos 
   4640  1.7  christos 		  /* If we don't have old-style __tls_get_addr calls
   4641  1.7  christos 		     without TLSGD/TLSLD marker relocs, and we haven't
   4642  1.9  christos 		     found a new-style __tls_get_addr call with a
   4643  1.7  christos 		     marker for this symbol, then we either have a
   4644  1.7  christos 		     broken object file or an -mlongcall style
   4645  1.7  christos 		     indirect call to __tls_get_addr without a marker.
   4646  1.7  christos 		     Disable optimization in this case.  */
   4647  1.7  christos 		  if ((tls_clear & (TLS_GD | TLS_LD)) != 0
   4648  1.7  christos 		      && !sec->nomark_tls_get_addr
   4649  1.7  christos 		      && ((*tls_mask & (TLS_TLS | TLS_MARK))
   4650  1.7  christos 			  != (TLS_TLS | TLS_MARK)))
   4651  1.7  christos 		    continue;
   4652  1.7  christos 
   4653  1.7  christos 		  if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr)
   4654  1.7  christos 		    {
   4655  1.7  christos 		      struct plt_entry *ent;
   4656  1.9  christos 		      bfd_vma addend = 0;
   4657  1.9  christos 
   4658  1.7  christos 		      if (bfd_link_pic (info)
   4659  1.1  christos 			  && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24
   4660  1.1  christos 			      || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL))
   4661  1.1  christos 			addend = rel[1].r_addend;
   4662  1.1  christos 		      ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
   4663  1.1  christos 					  got2, addend);
   4664  1.1  christos 		      if (ent != NULL && ent->plt.refcount > 0)
   4665  1.1  christos 			ent->plt.refcount -= 1;
   4666  1.1  christos 		    }
   4667  1.1  christos 		  if (tls_clear == 0)
   4668  1.1  christos 		    continue;
   4669  1.1  christos 
   4670  1.1  christos 		  if (tls_set == 0)
   4671  1.1  christos 		    {
   4672  1.1  christos 		      /* We managed to get rid of a got entry.  */
   4673  1.1  christos 		      if (*got_count > 0)
   4674  1.7  christos 			*got_count -= 1;
   4675  1.1  christos 		    }
   4676  1.1  christos 
   4677  1.1  christos 		  *tls_mask |= tls_set;
   4678  1.7  christos 		  *tls_mask &= ~tls_clear;
   4679  1.1  christos 		}
   4680  1.7  christos 
   4681  1.7  christos 	      if (elf_section_data (sec)->relocs != relstart)
   4682  1.1  christos 		free (relstart);
   4683  1.1  christos 	    }
   4684  1.1  christos       }
   4685  1.1  christos   htab->do_tls_opt = 1;
   4686  1.1  christos   return TRUE;
   4687  1.1  christos }
   4688  1.1  christos 
   4689  1.7  christos /* Find dynamic relocs for H that apply to read-only sections.  */
   4691  1.1  christos 
   4692  1.7  christos static asection *
   4693  1.7  christos readonly_dynrelocs (struct elf_link_hash_entry *h)
   4694  1.7  christos {
   4695  1.7  christos   struct elf_dyn_relocs *p;
   4696  1.7  christos 
   4697  1.7  christos   for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
   4698  1.7  christos     {
   4699  1.7  christos       asection *s = p->sec->output_section;
   4700  1.7  christos 
   4701  1.7  christos       if (s != NULL && (s->flags & SEC_READONLY) != 0)
   4702  1.7  christos 	return p->sec;
   4703  1.7  christos     }
   4704  1.7  christos   return NULL;
   4705  1.7  christos }
   4706  1.7  christos 
   4707  1.7  christos /* Return true if we have dynamic relocs against H or any of its weak
   4708  1.7  christos    aliases, that apply to read-only sections.  Cannot be used after
   4709  1.7  christos    size_dynamic_sections.  */
   4710  1.7  christos 
   4711  1.7  christos static bfd_boolean
   4712  1.7  christos alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
   4713  1.7  christos {
   4714  1.7  christos   struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
   4715  1.7  christos   do
   4716  1.7  christos     {
   4717  1.7  christos       if (readonly_dynrelocs (&eh->elf))
   4718  1.7  christos 	return TRUE;
   4719  1.7  christos       eh = ppc_elf_hash_entry (eh->elf.u.alias);
   4720  1.7  christos     } while (eh != NULL && &eh->elf != h);
   4721  1.7  christos 
   4722  1.7  christos   return FALSE;
   4723  1.1  christos }
   4724  1.1  christos 
   4725  1.1  christos /* Return whether H has pc-relative dynamic relocs.  */
   4726  1.1  christos 
   4727  1.1  christos static bfd_boolean
   4728  1.1  christos pc_dynrelocs (struct elf_link_hash_entry *h)
   4729  1.1  christos {
   4730  1.1  christos   struct elf_dyn_relocs *p;
   4731  1.1  christos 
   4732  1.1  christos   for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
   4733  1.1  christos     if (p->pc_count != 0)
   4734  1.1  christos       return TRUE;
   4735  1.1  christos   return FALSE;
   4736  1.1  christos }
   4737  1.1  christos 
   4738  1.1  christos /* Adjust a symbol defined by a dynamic object and referenced by a
   4739  1.1  christos    regular object.  The current definition is in some section of the
   4740  1.1  christos    dynamic object, but we're not including those sections.  We have to
   4741  1.1  christos    change the definition to something the rest of the link can
   4742  1.1  christos    understand.  */
   4743  1.1  christos 
   4744  1.1  christos static bfd_boolean
   4745  1.1  christos ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
   4746  1.1  christos 			       struct elf_link_hash_entry *h)
   4747  1.1  christos {
   4748  1.1  christos   struct ppc_elf_link_hash_table *htab;
   4749  1.7  christos   asection *s;
   4750  1.1  christos 
   4751  1.1  christos #ifdef DEBUG
   4752  1.1  christos   fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
   4753  1.1  christos 	   h->root.root.string);
   4754  1.1  christos #endif
   4755  1.1  christos 
   4756  1.1  christos   /* Make sure we know what is going on here.  */
   4757  1.1  christos   htab = ppc_elf_hash_table (info);
   4758  1.1  christos   BFD_ASSERT (htab->elf.dynobj != NULL
   4759  1.7  christos 	      && (h->needs_plt
   4760  1.7  christos 		  || h->type == STT_GNU_IFUNC
   4761  1.7  christos 		  || h->is_weakalias
   4762  1.7  christos 		  || (h->def_dynamic
   4763  1.7  christos 		      && h->ref_regular
   4764  1.7  christos 		      && !h->def_regular)));
   4765  1.7  christos 
   4766  1.1  christos   /* Deal with function syms.  */
   4767  1.1  christos   if (h->type == STT_FUNC
   4768  1.1  christos       || h->type == STT_GNU_IFUNC
   4769  1.1  christos       || h->needs_plt)
   4770  1.1  christos     {
   4771  1.1  christos       bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
   4772  1.1  christos 			   || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
   4773  1.1  christos       /* Discard dyn_relocs when non-pic if we've decided that a
   4774  1.7  christos 	 function symbol is local.  */
   4775  1.7  christos       if (!bfd_link_pic (info) && local)
   4776  1.7  christos 	ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4777  1.7  christos 
   4778  1.1  christos       /* Clear procedure linkage table information for any symbol that
   4779  1.1  christos 	 won't need a .plt entry.  */
   4780  1.1  christos       struct plt_entry *ent;
   4781  1.1  christos       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   4782  1.1  christos 	if (ent->plt.refcount > 0)
   4783  1.1  christos 	  break;
   4784  1.1  christos       if (ent == NULL
   4785  1.1  christos 	  || (h->type != STT_GNU_IFUNC
   4786  1.1  christos 	      && local
   4787  1.1  christos 	      && (htab->can_convert_all_inline_plt
   4788  1.1  christos 		  || (ppc_elf_hash_entry (h)->tls_mask
   4789  1.1  christos 		      & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
   4790  1.1  christos 	{
   4791  1.3  christos 	  /* A PLT entry is not required/allowed when:
   4792  1.1  christos 
   4793  1.1  christos 	     1. We are not using ld.so; because then the PLT entry
   4794  1.1  christos 	     can't be set up, so we can't use one.  In this case,
   4795  1.3  christos 	     ppc_elf_adjust_dynamic_symbol won't even be called.
   4796  1.3  christos 
   4797  1.3  christos 	     2. GC has rendered the entry unused.
   4798  1.7  christos 
   4799  1.7  christos 	     3. We know for certain that a call to this symbol
   4800  1.7  christos 	     will go to this object, or will remain undefined.  */
   4801  1.7  christos 	  h->plt.plist = NULL;
   4802  1.7  christos 	  h->needs_plt = 0;
   4803  1.7  christos 	  h->pointer_equality_needed = 0;
   4804  1.7  christos 	}
   4805  1.7  christos       else
   4806  1.7  christos 	{
   4807  1.7  christos 	  /* Taking a function's address in a read/write section
   4808  1.3  christos 	     doesn't require us to define the function symbol in the
   4809  1.3  christos 	     executable on a plt call stub.  A dynamic reloc can
   4810  1.7  christos 	     be used instead, giving better runtime performance.
   4811  1.3  christos 	     (Calls via that function pointer don't need to bounce
   4812  1.3  christos 	     through the plt call stub.)  Similarly, use a dynamic
   4813  1.7  christos 	     reloc for a weak reference when possible, allowing the
   4814  1.7  christos 	     resolution of the symbol to be set at load time rather
   4815  1.7  christos 	     than link time.  */
   4816  1.7  christos 	  if ((h->pointer_equality_needed
   4817  1.7  christos 	       || (h->non_got_ref
   4818  1.7  christos 		   && !h->ref_regular_nonweak
   4819  1.7  christos 		   && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
   4820  1.7  christos 	      && !htab->is_vxworks
   4821  1.7  christos 	      && !ppc_elf_hash_entry (h)->has_sda_refs
   4822  1.1  christos 	      && !readonly_dynrelocs (h))
   4823  1.3  christos 	    {
   4824  1.7  christos 	      h->pointer_equality_needed = 0;
   4825  1.1  christos 	      /* If we haven't seen a branch reloc and the symbol
   4826  1.1  christos 		 isn't an ifunc then we don't need a plt entry.  */
   4827  1.1  christos 	      if (!h->needs_plt && h->type != STT_GNU_IFUNC)
   4828  1.1  christos 		h->plt.plist = NULL;
   4829  1.1  christos 	    }
   4830  1.1  christos 	  else if (!bfd_link_pic (info))
   4831  1.1  christos 	    /* We are going to be defining the function symbol on the
   4832  1.1  christos 	       plt stub, so no dyn_relocs needed when non-pic.  */
   4833  1.7  christos 	    ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4834  1.1  christos 	}
   4835  1.7  christos       h->protected_def = 0;
   4836  1.7  christos       /* Function symbols can't have copy relocs.  */
   4837  1.7  christos       return TRUE;
   4838  1.7  christos     }
   4839  1.7  christos   else
   4840  1.7  christos     h->plt.plist = NULL;
   4841  1.7  christos 
   4842  1.7  christos   /* If this is a weak symbol, and there is a real definition, the
   4843  1.1  christos      processor independent code will have arranged for us to see the
   4844  1.1  christos      real definition first, and we can just use the same value.  */
   4845  1.1  christos   if (h->is_weakalias)
   4846  1.1  christos     {
   4847  1.1  christos       struct elf_link_hash_entry *def = weakdef (h);
   4848  1.1  christos       BFD_ASSERT (def->root.type == bfd_link_hash_defined);
   4849  1.1  christos       h->root.u.def.section = def->root.u.def.section;
   4850  1.1  christos       h->root.u.def.value = def->root.u.def.value;
   4851  1.1  christos       if (def->root.u.def.section == htab->elf.sdynbss
   4852  1.1  christos 	  || def->root.u.def.section == htab->elf.sdynrelro
   4853  1.3  christos 	  || def->root.u.def.section == htab->dynsbss)
   4854  1.3  christos 	ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4855  1.3  christos       return TRUE;
   4856  1.3  christos     }
   4857  1.3  christos 
   4858  1.1  christos   /* This is a reference to a symbol defined by a dynamic object which
   4859  1.1  christos      is not a function.  */
   4860  1.1  christos 
   4861  1.1  christos   /* If we are creating a shared library, we must presume that the
   4862  1.3  christos      only references to the symbol are via the global offset table.
   4863  1.3  christos      For such cases we need not do anything here; the relocations will
   4864  1.3  christos      be handled correctly by relocate_section.  */
   4865  1.3  christos   if (bfd_link_pic (info))
   4866  1.3  christos     {
   4867  1.3  christos       h->protected_def = 0;
   4868  1.3  christos       return TRUE;
   4869  1.3  christos     }
   4870  1.3  christos 
   4871  1.3  christos   /* If there are no references to this symbol that do not use the
   4872  1.3  christos      GOT, we don't need to generate a copy reloc.  */
   4873  1.3  christos   if (!h->non_got_ref)
   4874  1.3  christos     {
   4875  1.3  christos       h->protected_def = 0;
   4876  1.3  christos       return TRUE;
   4877  1.3  christos     }
   4878  1.3  christos 
   4879  1.3  christos   /* Protected variables do not work with .dynbss.  The copy in
   4880  1.3  christos      .dynbss won't be used by the shared library with the protected
   4881  1.3  christos      definition for the variable.  Editing to PIC, or text relocations
   4882  1.3  christos      are preferable to an incorrect program.  */
   4883  1.3  christos   if (h->protected_def)
   4884  1.7  christos     {
   4885  1.1  christos       if (ELIMINATE_COPY_RELOCS
   4886  1.7  christos 	  && ppc_elf_hash_entry (h)->has_addr16_ha
   4887  1.1  christos 	  && ppc_elf_hash_entry (h)->has_addr16_lo
   4888  1.1  christos 	  && htab->params->pic_fixup == 0
   4889  1.1  christos 	  && info->disable_target_specific_optimizations <= 1)
   4890  1.1  christos 	htab->params->pic_fixup = 1;
   4891  1.1  christos       return TRUE;
   4892  1.1  christos     }
   4893  1.1  christos 
   4894  1.1  christos   /* If -z nocopyreloc was given, we won't generate them either.  */
   4895  1.1  christos   if (info->nocopyreloc)
   4896  1.7  christos     return TRUE;
   4897  1.7  christos 
   4898  1.1  christos    /* If we don't find any dynamic relocs in read-only sections, then
   4899  1.1  christos       we'll be keeping the dynamic relocs and avoiding the copy reloc.
   4900  1.1  christos       We can't do this if there are any small data relocations.  This
   4901  1.1  christos       doesn't work on VxWorks, where we can not have dynamic
   4902  1.1  christos       relocations (other than copy and jump slot relocations) in an
   4903  1.1  christos       executable.  */
   4904  1.1  christos   if (ELIMINATE_COPY_RELOCS
   4905  1.1  christos       && !ppc_elf_hash_entry (h)->has_sda_refs
   4906  1.1  christos       && !htab->is_vxworks
   4907  1.1  christos       && !h->def_regular
   4908  1.1  christos       && !alias_readonly_dynrelocs (h))
   4909  1.1  christos     return TRUE;
   4910  1.1  christos 
   4911  1.1  christos   /* We must allocate the symbol in our .dynbss section, which will
   4912  1.1  christos      become part of the .bss section of the executable.  There will be
   4913  1.7  christos      an entry for this symbol in the .dynsym section.  The dynamic
   4914  1.7  christos      object will contain position independent code, so all references
   4915  1.1  christos      from the dynamic object to this symbol will go through the global
   4916  1.7  christos      offset table.  The dynamic linker will use the .dynsym entry to
   4917  1.1  christos      determine the address it must put in the global offset table, so
   4918  1.1  christos      both the dynamic object and the regular object will refer to the
   4919  1.1  christos      same memory location for the variable.
   4920  1.1  christos 
   4921  1.1  christos      Of course, if the symbol is referenced using SDAREL relocs, we
   4922  1.1  christos      must instead allocate it in .sbss.  */
   4923  1.7  christos   if (ppc_elf_hash_entry (h)->has_sda_refs)
   4924  1.7  christos     s = htab->dynsbss;
   4925  1.7  christos   else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
   4926  1.1  christos     s = htab->elf.sdynrelro;
   4927  1.1  christos   else
   4928  1.7  christos     s = htab->elf.sdynbss;
   4929  1.7  christos   BFD_ASSERT (s != NULL);
   4930  1.1  christos 
   4931  1.7  christos   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
   4932  1.1  christos     {
   4933  1.1  christos       asection *srel;
   4934  1.1  christos 
   4935  1.1  christos       /* We must generate a R_PPC_COPY reloc to tell the dynamic
   4936  1.1  christos 	 linker to copy the initial value out of the dynamic object
   4937  1.7  christos 	 and into the runtime process image.  */
   4938  1.7  christos       if (ppc_elf_hash_entry (h)->has_sda_refs)
   4939  1.3  christos 	srel = htab->relsbss;
   4940  1.1  christos       else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
   4941  1.1  christos 	srel = htab->elf.sreldynrelro;
   4942  1.1  christos       else
   4943  1.1  christos 	srel = htab->elf.srelbss;
   4944  1.1  christos       BFD_ASSERT (srel != NULL);
   4945  1.1  christos       srel->size += sizeof (Elf32_External_Rela);
   4946  1.1  christos       h->needs_copy = 1;
   4947  1.1  christos     }
   4948  1.1  christos 
   4949  1.1  christos   /* We no longer want dyn_relocs.  */
   4950  1.1  christos   ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4951  1.1  christos   return _bfd_elf_adjust_dynamic_copy (info, h, s);
   4952  1.1  christos }
   4953  1.1  christos 
   4954  1.1  christos /* Generate a symbol to mark plt call stubs.  For non-PIC code the sym is
   4956  1.1  christos    xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
   4957  1.1  christos    specifying the addend on the plt relocation.  For -fpic code, the sym
   4958  1.1  christos    is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
   4959  1.3  christos    xxxxxxxx.got2.plt_pic32.<callee>.  */
   4960  1.1  christos 
   4961  1.1  christos static bfd_boolean
   4962  1.1  christos add_stub_sym (struct plt_entry *ent,
   4963  1.1  christos 	      struct elf_link_hash_entry *h,
   4964  1.1  christos 	      struct bfd_link_info *info)
   4965  1.1  christos {
   4966  1.1  christos   struct elf_link_hash_entry *sh;
   4967  1.1  christos   size_t len1, len2, len3;
   4968  1.1  christos   char *name;
   4969  1.1  christos   const char *stub;
   4970  1.1  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   4971  1.1  christos 
   4972  1.1  christos   if (bfd_link_pic (info))
   4973  1.1  christos     stub = ".plt_pic32.";
   4974  1.1  christos   else
   4975  1.1  christos     stub = ".plt_call32.";
   4976  1.1  christos 
   4977  1.1  christos   len1 = strlen (h->root.root.string);
   4978  1.1  christos   len2 = strlen (stub);
   4979  1.1  christos   len3 = 0;
   4980  1.1  christos   if (ent->sec)
   4981  1.1  christos     len3 = strlen (ent->sec->name);
   4982  1.1  christos   name = bfd_malloc (len1 + len2 + len3 + 9);
   4983  1.1  christos   if (name == NULL)
   4984  1.1  christos     return FALSE;
   4985  1.1  christos   sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
   4986  1.1  christos   if (ent->sec)
   4987  1.1  christos     memcpy (name + 8, ent->sec->name, len3);
   4988  1.1  christos   memcpy (name + 8 + len3, stub, len2);
   4989  1.1  christos   memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
   4990  1.3  christos   sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
   4991  1.1  christos   if (sh == NULL)
   4992  1.1  christos     return FALSE;
   4993  1.1  christos   if (sh->root.type == bfd_link_hash_new)
   4994  1.1  christos     {
   4995  1.1  christos       sh->root.type = bfd_link_hash_defined;
   4996  1.1  christos       sh->root.u.def.section = htab->glink;
   4997  1.1  christos       sh->root.u.def.value = ent->glink_offset;
   4998  1.1  christos       sh->ref_regular = 1;
   4999  1.1  christos       sh->def_regular = 1;
   5000  1.1  christos       sh->ref_regular_nonweak = 1;
   5001  1.1  christos       sh->forced_local = 1;
   5002  1.1  christos       sh->non_elf = 0;
   5003  1.1  christos       sh->root.linker_def = 1;
   5004  1.1  christos     }
   5005  1.1  christos   return TRUE;
   5006  1.7  christos }
   5007  1.7  christos 
   5008  1.1  christos /* Allocate NEED contiguous space in .got, and return the offset.
   5009  1.1  christos    Handles allocation of the got header when crossing 32k.  */
   5010  1.1  christos 
   5011  1.1  christos static bfd_vma
   5012  1.1  christos allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
   5013  1.1  christos {
   5014  1.1  christos   bfd_vma where;
   5015  1.1  christos   unsigned int max_before_header;
   5016  1.1  christos 
   5017  1.1  christos   if (htab->plt_type == PLT_VXWORKS)
   5018  1.1  christos     {
   5019  1.7  christos       where = htab->elf.sgot->size;
   5020  1.7  christos       htab->elf.sgot->size += need;
   5021  1.1  christos     }
   5022  1.7  christos   else
   5023  1.7  christos     {
   5024  1.1  christos       max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
   5025  1.7  christos       if (need <= htab->got_gap)
   5026  1.7  christos 	{
   5027  1.1  christos 	  where = max_before_header - htab->got_gap;
   5028  1.1  christos 	  htab->got_gap -= need;
   5029  1.1  christos 	}
   5030  1.1  christos       else
   5031  1.1  christos 	{
   5032  1.7  christos 	  if (htab->elf.sgot->size + need > max_before_header
   5033  1.7  christos 	      && htab->elf.sgot->size <= max_before_header)
   5034  1.7  christos 	    {
   5035  1.7  christos 	      htab->got_gap = max_before_header - htab->elf.sgot->size;
   5036  1.7  christos 	      htab->elf.sgot->size = max_before_header + htab->got_header_size;
   5037  1.7  christos 	    }
   5038  1.7  christos 	  where = htab->elf.sgot->size;
   5039  1.7  christos 	  htab->elf.sgot->size += need;
   5040  1.7  christos 	}
   5041  1.7  christos     }
   5042  1.7  christos   return where;
   5043  1.7  christos }
   5044  1.7  christos 
   5045  1.7  christos /* Calculate size of GOT entries for symbol given its TLS_MASK.
   5046  1.9  christos    TLS_LD is excluded because those go in a special GOT slot.  */
   5047  1.7  christos 
   5048  1.7  christos static inline unsigned int
   5049  1.7  christos got_entries_needed (int tls_mask)
   5050  1.7  christos {
   5051  1.7  christos   unsigned int need;
   5052  1.7  christos   if ((tls_mask & TLS_TLS) == 0)
   5053  1.7  christos     need = 4;
   5054  1.7  christos   else
   5055  1.7  christos     {
   5056  1.7  christos       need = 0;
   5057  1.7  christos       if ((tls_mask & TLS_GD) != 0)
   5058  1.7  christos 	need += 8;
   5059  1.7  christos       if ((tls_mask & (TLS_TPREL | TLS_GDIE)) != 0)
   5060  1.7  christos 	need += 4;
   5061  1.7  christos       if ((tls_mask & TLS_DTPREL) != 0)
   5062  1.7  christos 	need += 4;
   5063  1.7  christos     }
   5064  1.7  christos   return need;
   5065  1.7  christos }
   5066  1.7  christos 
   5067  1.7  christos /* If H is undefined, make it dynamic if that makes sense.  */
   5068  1.7  christos 
   5069  1.7  christos static bfd_boolean
   5070  1.7  christos ensure_undef_dynamic (struct bfd_link_info *info,
   5071  1.7  christos 		      struct elf_link_hash_entry *h)
   5072  1.7  christos {
   5073  1.1  christos   struct elf_link_hash_table *htab = elf_hash_table (info);
   5074  1.1  christos 
   5075  1.1  christos   if (htab->dynamic_sections_created
   5076  1.1  christos       && ((info->dynamic_undefined_weak != 0
   5077  1.1  christos 	   && h->root.type == bfd_link_hash_undefweak)
   5078  1.1  christos 	  || h->root.type == bfd_link_hash_undefined)
   5079  1.1  christos       && h->dynindx == -1
   5080  1.1  christos       && !h->forced_local
   5081  1.1  christos       && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
   5082  1.7  christos     return bfd_elf_link_record_dynamic_symbol (info, h);
   5083  1.1  christos   return TRUE;
   5084  1.1  christos }
   5085  1.1  christos 
   5086  1.1  christos /* Allocate space in associated reloc sections for dynamic relocs.  */
   5087  1.1  christos 
   5088  1.1  christos static bfd_boolean
   5089  1.3  christos allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
   5090  1.3  christos {
   5091  1.3  christos   struct bfd_link_info *info = inf;
   5092  1.3  christos   struct ppc_elf_link_hash_entry *eh;
   5093  1.3  christos   struct ppc_elf_link_hash_table *htab;
   5094  1.3  christos   struct elf_dyn_relocs *p;
   5095  1.3  christos   bfd_boolean dyn;
   5096  1.1  christos 
   5097  1.1  christos   if (h->root.type == bfd_link_hash_indirect)
   5098  1.1  christos     return TRUE;
   5099  1.1  christos 
   5100  1.7  christos   htab = ppc_elf_hash_table (info);
   5101  1.7  christos   eh = (struct ppc_elf_link_hash_entry *) h;
   5102  1.1  christos   if (eh->elf.got.refcount > 0
   5103  1.1  christos       || (ELIMINATE_COPY_RELOCS
   5104  1.7  christos 	  && !eh->elf.def_regular
   5105  1.1  christos 	  && eh->elf.protected_def
   5106  1.9  christos 	  && eh->has_addr16_ha
   5107  1.7  christos 	  && eh->has_addr16_lo
   5108  1.7  christos 	  && htab->params->pic_fixup > 0))
   5109  1.7  christos     {
   5110  1.7  christos       unsigned int need;
   5111  1.7  christos 
   5112  1.1  christos       /* Make sure this symbol is output as a dynamic symbol.  */
   5113  1.1  christos       if (!ensure_undef_dynamic (info, &eh->elf))
   5114  1.7  christos 	return FALSE;
   5115  1.1  christos 
   5116  1.1  christos       need = 0;
   5117  1.1  christos       if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5118  1.1  christos 	{
   5119  1.1  christos 	  if (SYMBOL_REFERENCES_LOCAL (info, &eh->elf))
   5120  1.9  christos 	    /* We'll just use htab->tlsld_got.offset.  This should
   5121  1.9  christos 	       always be the case.  It's a little odd if we have
   5122  1.9  christos 	       a local dynamic reloc against a non-local symbol.  */
   5123  1.9  christos 	    htab->tlsld_got.refcount += 1;
   5124  1.7  christos 	  else
   5125  1.7  christos 	    need += 8;
   5126  1.7  christos 	}
   5127  1.7  christos       need += got_entries_needed (eh->tls_mask);
   5128  1.7  christos       if (need == 0)
   5129  1.7  christos 	eh->elf.got.offset = (bfd_vma) -1;
   5130  1.9  christos       else
   5131  1.9  christos 	{
   5132  1.9  christos 	  eh->elf.got.offset = allocate_got (htab, need);
   5133  1.7  christos 	  if (((bfd_link_pic (info)
   5134  1.7  christos 		&& !((eh->tls_mask & TLS_TLS) != 0
   5135  1.3  christos 		     && bfd_link_executable (info)
   5136  1.7  christos 		     && SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
   5137  1.7  christos 	       || (htab->elf.dynamic_sections_created
   5138  1.1  christos 		   && eh->elf.dynindx != -1
   5139  1.1  christos 		   && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
   5140  1.1  christos 	      && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
   5141  1.1  christos 	    {
   5142  1.1  christos 	      asection *rsec;
   5143  1.1  christos 
   5144  1.7  christos 	      need *= sizeof (Elf32_External_Rela) / 4;
   5145  1.7  christos 	      if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5146  1.7  christos 		need -= sizeof (Elf32_External_Rela);
   5147  1.7  christos 	      rsec = htab->elf.srelgot;
   5148  1.7  christos 	      if (eh->elf.type == STT_GNU_IFUNC)
   5149  1.7  christos 		rsec = htab->elf.irelplt;
   5150  1.7  christos 	      rsec->size += need;
   5151  1.7  christos 	    }
   5152  1.7  christos 	}
   5153  1.7  christos     }
   5154  1.7  christos   else
   5155  1.7  christos     eh->elf.got.offset = (bfd_vma) -1;
   5156  1.7  christos 
   5157  1.7  christos   /* If no dynamic sections we can't have dynamic relocs, except for
   5158  1.7  christos      IFUNCs which are handled even in static executables.  */
   5159  1.7  christos   if (!htab->elf.dynamic_sections_created
   5160  1.7  christos       && h->type != STT_GNU_IFUNC)
   5161  1.7  christos     eh->dyn_relocs = NULL;
   5162  1.1  christos 
   5163  1.1  christos   /* Discard relocs on undefined symbols that must be local.  */
   5164  1.1  christos   else if (h->root.type == bfd_link_hash_undefined
   5165  1.1  christos 	   && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   5166  1.1  christos     eh->dyn_relocs = NULL;
   5167  1.1  christos 
   5168  1.7  christos   /* Also discard relocs on undefined weak syms with non-default
   5169  1.1  christos      visibility, or when dynamic_undefined_weak says so.  */
   5170  1.1  christos   else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   5171  1.1  christos     eh->dyn_relocs = NULL;
   5172  1.1  christos 
   5173  1.1  christos   if (eh->dyn_relocs == NULL)
   5174  1.1  christos     ;
   5175  1.1  christos 
   5176  1.1  christos   /* In the shared -Bsymbolic case, discard space allocated for
   5177  1.1  christos      dynamic pc-relative relocs against symbols which turn out to be
   5178  1.1  christos      defined in regular objects.  For the normal shared case, discard
   5179  1.1  christos      space for relocs that have become local due to symbol visibility
   5180  1.1  christos      changes.  */
   5181  1.1  christos   else if (bfd_link_pic (info))
   5182  1.1  christos     {
   5183  1.1  christos       /* Relocs that use pc_count are those that appear on a call insn,
   5184  1.1  christos 	 or certain REL relocs (see must_be_dyn_reloc) that can be
   5185  1.7  christos 	 generated via assembly.  We want calls to protected symbols to
   5186  1.7  christos 	 resolve directly to the function rather than going via the plt.
   5187  1.7  christos 	 If people want function pointer comparisons to work as expected
   5188  1.7  christos 	 then they should avoid writing weird assembly.  */
   5189  1.7  christos       if (SYMBOL_CALLS_LOCAL (info, h))
   5190  1.7  christos 	{
   5191  1.7  christos 	  struct elf_dyn_relocs **pp;
   5192  1.7  christos 
   5193  1.7  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   5194  1.7  christos 	    {
   5195  1.7  christos 	      p->count -= p->pc_count;
   5196  1.7  christos 	      p->pc_count = 0;
   5197  1.7  christos 	      if (p->count == 0)
   5198  1.7  christos 		*pp = p->next;
   5199  1.7  christos 	      else
   5200  1.7  christos 		pp = &p->next;
   5201  1.7  christos 	    }
   5202  1.7  christos 	}
   5203  1.7  christos 
   5204  1.7  christos       if (htab->is_vxworks)
   5205  1.7  christos 	{
   5206  1.7  christos 	  struct elf_dyn_relocs **pp;
   5207  1.7  christos 
   5208  1.7  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   5209  1.7  christos 	    {
   5210  1.7  christos 	      if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
   5211  1.7  christos 		*pp = p->next;
   5212  1.7  christos 	      else
   5213  1.7  christos 		pp = &p->next;
   5214  1.7  christos 	    }
   5215  1.7  christos 	}
   5216  1.7  christos 
   5217  1.7  christos       if (eh->dyn_relocs != NULL)
   5218  1.7  christos 	{
   5219  1.7  christos 	  /* Make sure this symbol is output as a dynamic symbol.  */
   5220  1.7  christos 	  if (!ensure_undef_dynamic (info, h))
   5221  1.7  christos 	    return FALSE;
   5222  1.7  christos 	}
   5223  1.7  christos     }
   5224  1.7  christos   else if (ELIMINATE_COPY_RELOCS)
   5225  1.7  christos     {
   5226  1.7  christos       /* For the non-pic case, discard space for relocs against
   5227  1.7  christos 	 symbols which turn out to need copy relocs or are not
   5228  1.7  christos 	 dynamic.  */
   5229  1.7  christos       if (h->dynamic_adjusted
   5230  1.7  christos 	  && !h->def_regular
   5231  1.7  christos 	  && !ELF_COMMON_DEF_P (h)
   5232  1.7  christos 	  && !(h->protected_def
   5233  1.7  christos 	       && eh->has_addr16_ha
   5234  1.7  christos 	       && eh->has_addr16_lo
   5235  1.7  christos 	       && htab->params->pic_fixup > 0))
   5236  1.7  christos 	{
   5237  1.7  christos 	  /* Make sure this symbol is output as a dynamic symbol.  */
   5238  1.7  christos 	  if (!ensure_undef_dynamic (info, h))
   5239  1.7  christos 	    return FALSE;
   5240  1.7  christos 
   5241  1.7  christos 	  if (h->dynindx == -1)
   5242  1.7  christos 	    eh->dyn_relocs = NULL;
   5243  1.7  christos 	}
   5244  1.7  christos       else
   5245  1.7  christos 	eh->dyn_relocs = NULL;
   5246  1.7  christos     }
   5247  1.7  christos 
   5248  1.7  christos   /* Allocate space.  */
   5249  1.7  christos   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   5250  1.7  christos     {
   5251  1.7  christos       asection *sreloc = elf_section_data (p->sec)->sreloc;
   5252  1.7  christos       if (eh->elf.type == STT_GNU_IFUNC)
   5253  1.7  christos 	sreloc = htab->elf.irelplt;
   5254  1.7  christos       sreloc->size += p->count * sizeof (Elf32_External_Rela);
   5255  1.7  christos     }
   5256  1.7  christos 
   5257  1.7  christos   /* Handle PLT relocs.  Done last, after dynindx has settled.
   5258  1.7  christos      We might need a PLT entry when the symbol
   5259  1.7  christos      a) is dynamic, or
   5260  1.7  christos      b) is an ifunc, or
   5261  1.7  christos      c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
   5262  1.7  christos      d) has plt16 relocs and we are linking statically.  */
   5263  1.7  christos   dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
   5264  1.7  christos   if (dyn
   5265  1.7  christos       || h->type == STT_GNU_IFUNC
   5266  1.7  christos       || (h->needs_plt && h->dynamic_adjusted)
   5267  1.7  christos       || (h->needs_plt
   5268  1.7  christos 	  && h->def_regular
   5269  1.7  christos 	  && !htab->elf.dynamic_sections_created
   5270  1.7  christos 	  && !htab->can_convert_all_inline_plt
   5271  1.7  christos 	  && (ppc_elf_hash_entry (h)->tls_mask
   5272  1.7  christos 	      & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
   5273  1.7  christos     {
   5274  1.7  christos       struct plt_entry *ent;
   5275  1.7  christos       bfd_boolean doneone = FALSE;
   5276  1.7  christos       bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
   5277  1.7  christos 
   5278  1.7  christos       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   5279  1.7  christos 	if (ent->plt.refcount > 0)
   5280  1.7  christos 	  {
   5281  1.7  christos 	    asection *s = htab->elf.splt;
   5282  1.7  christos 
   5283  1.7  christos 	    if (!dyn)
   5284  1.7  christos 	      {
   5285  1.7  christos 		if (h->type == STT_GNU_IFUNC)
   5286  1.7  christos 		  s = htab->elf.iplt;
   5287  1.7  christos 		else
   5288  1.7  christos 		  s = htab->pltlocal;
   5289  1.7  christos 	      }
   5290  1.7  christos 
   5291  1.7  christos 	    if (htab->plt_type == PLT_NEW || !dyn)
   5292  1.7  christos 	      {
   5293  1.7  christos 		if (!doneone)
   5294  1.7  christos 		  {
   5295  1.7  christos 		    plt_offset = s->size;
   5296  1.7  christos 		    s->size += 4;
   5297  1.7  christos 		  }
   5298  1.7  christos 		ent->plt.offset = plt_offset;
   5299  1.7  christos 
   5300  1.7  christos 		if (s == htab->pltlocal)
   5301  1.7  christos 		  ent->glink_offset = glink_offset;
   5302  1.7  christos 		else
   5303  1.7  christos 		  {
   5304  1.7  christos 		    s = htab->glink;
   5305  1.7  christos 		    if (!doneone || bfd_link_pic (info))
   5306  1.7  christos 		      {
   5307  1.7  christos 			glink_offset = s->size;
   5308  1.7  christos 			s->size += GLINK_ENTRY_SIZE (htab, h);
   5309  1.7  christos 		      }
   5310  1.7  christos 		    if (!doneone
   5311  1.7  christos 			&& !bfd_link_pic (info)
   5312  1.7  christos 			&& h->def_dynamic
   5313  1.7  christos 			&& !h->def_regular)
   5314  1.7  christos 		      {
   5315  1.7  christos 			h->root.u.def.section = s;
   5316  1.7  christos 			h->root.u.def.value = glink_offset;
   5317  1.7  christos 		      }
   5318  1.7  christos 		    ent->glink_offset = glink_offset;
   5319  1.7  christos 
   5320  1.7  christos 		    if (htab->params->emit_stub_syms
   5321  1.7  christos 			&& !add_stub_sym (ent, h, info))
   5322  1.7  christos 		      return FALSE;
   5323  1.7  christos 		  }
   5324  1.7  christos 	      }
   5325  1.7  christos 	    else
   5326  1.7  christos 	      {
   5327  1.7  christos 		if (!doneone)
   5328  1.7  christos 		  {
   5329  1.7  christos 		    /* If this is the first .plt entry, make room
   5330  1.7  christos 		       for the special first entry.  */
   5331  1.7  christos 		    if (s->size == 0)
   5332  1.7  christos 		      s->size += htab->plt_initial_entry_size;
   5333  1.7  christos 
   5334  1.7  christos 		    /* The PowerPC PLT is actually composed of two
   5335  1.7  christos 		       parts, the first part is 2 words (for a load
   5336  1.7  christos 		       and a jump), and then there is a remaining
   5337  1.7  christos 		       word available at the end.  */
   5338  1.7  christos 		    plt_offset = (htab->plt_initial_entry_size
   5339  1.7  christos 				  + (htab->plt_slot_size
   5340  1.7  christos 				     * ((s->size
   5341  1.7  christos 					 - htab->plt_initial_entry_size)
   5342  1.7  christos 					/ htab->plt_entry_size)));
   5343  1.7  christos 
   5344  1.7  christos 		    /* If this symbol is not defined in a regular
   5345  1.1  christos 		       file, and we are not generating a shared
   5346  1.7  christos 		       library, then set the symbol to this location
   5347  1.7  christos 		       in the .plt.  This is to avoid text
   5348  1.7  christos 		       relocations, and is required to make
   5349  1.7  christos 		       function pointers compare as equal between
   5350  1.7  christos 		       the normal executable and the shared library.  */
   5351  1.7  christos 		    if (! bfd_link_pic (info)
   5352  1.7  christos 			&& h->def_dynamic
   5353  1.7  christos 			&& !h->def_regular)
   5354  1.7  christos 		      {
   5355  1.7  christos 			h->root.u.def.section = s;
   5356  1.7  christos 			h->root.u.def.value = plt_offset;
   5357  1.7  christos 		      }
   5358  1.1  christos 
   5359  1.7  christos 		    /* Make room for this entry.  */
   5360  1.7  christos 		    s->size += htab->plt_entry_size;
   5361  1.7  christos 		    /* After the 8192nd entry, room for two entries
   5362  1.7  christos 		       is allocated.  */
   5363  1.7  christos 		    if (htab->plt_type == PLT_OLD
   5364  1.7  christos 			&& (s->size - htab->plt_initial_entry_size)
   5365  1.7  christos 			/ htab->plt_entry_size
   5366  1.7  christos 			> PLT_NUM_SINGLE_ENTRIES)
   5367  1.7  christos 		      s->size += htab->plt_entry_size;
   5368  1.7  christos 		  }
   5369  1.7  christos 		ent->plt.offset = plt_offset;
   5370  1.7  christos 	      }
   5371  1.7  christos 
   5372  1.7  christos 	    /* We also need to make an entry in the .rela.plt section.  */
   5373  1.7  christos 	    if (!doneone)
   5374  1.7  christos 	      {
   5375  1.7  christos 		if (!dyn)
   5376  1.7  christos 		  {
   5377  1.7  christos 		    if (h->type == STT_GNU_IFUNC)
   5378  1.1  christos 		      {
   5379  1.7  christos 			s = htab->elf.irelplt;
   5380  1.7  christos 			s->size += sizeof (Elf32_External_Rela);
   5381  1.7  christos 		      }
   5382  1.7  christos 		    else if (bfd_link_pic (info))
   5383  1.7  christos 		      {
   5384  1.7  christos 			s = htab->relpltlocal;
   5385  1.7  christos 			s->size += sizeof (Elf32_External_Rela);
   5386  1.7  christos 		      }
   5387  1.7  christos 		  }
   5388  1.7  christos 		else
   5389  1.7  christos 		  {
   5390  1.7  christos 		    htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
   5391  1.7  christos 
   5392  1.1  christos 		    if (htab->plt_type == PLT_VXWORKS)
   5393  1.7  christos 		      {
   5394  1.7  christos 			/* Allocate space for the unloaded relocations.  */
   5395  1.7  christos 			if (!bfd_link_pic (info)
   5396  1.7  christos 			    && htab->elf.dynamic_sections_created)
   5397  1.1  christos 			  {
   5398  1.7  christos 			    if (ent->plt.offset
   5399  1.7  christos 				== (bfd_vma) htab->plt_initial_entry_size)
   5400  1.7  christos 			      {
   5401  1.7  christos 				htab->srelplt2->size
   5402  1.7  christos 				  += (sizeof (Elf32_External_Rela)
   5403  1.7  christos 				      * VXWORKS_PLTRESOLVE_RELOCS);
   5404  1.7  christos 			      }
   5405  1.7  christos 
   5406  1.7  christos 			    htab->srelplt2->size
   5407  1.7  christos 			      += (sizeof (Elf32_External_Rela)
   5408  1.1  christos 				  * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
   5409  1.7  christos 			  }
   5410  1.1  christos 
   5411  1.7  christos 			/* Every PLT entry has an associated GOT entry in
   5412  1.7  christos 			   .got.plt.  */
   5413  1.1  christos 			htab->elf.sgotplt->size += 4;
   5414  1.1  christos 		      }
   5415  1.7  christos 		  }
   5416  1.1  christos 		doneone = TRUE;
   5417  1.7  christos 	      }
   5418  1.7  christos 	  }
   5419  1.1  christos 	else
   5420  1.1  christos 	  ent->plt.offset = (bfd_vma) -1;
   5421  1.1  christos 
   5422  1.1  christos       if (!doneone)
   5423  1.1  christos 	{
   5424  1.1  christos 	  h->plt.plist = NULL;
   5425  1.1  christos 	  h->needs_plt = 0;
   5426  1.1  christos 	}
   5427  1.1  christos     }
   5428  1.7  christos   else
   5429  1.1  christos     {
   5430  1.7  christos       h->plt.plist = NULL;
   5431  1.7  christos       h->needs_plt = 0;
   5432  1.1  christos     }
   5433  1.1  christos 
   5434  1.1  christos   return TRUE;
   5435  1.7  christos }
   5436  1.7  christos 
   5437  1.1  christos /* Set DF_TEXTREL if we find any dynamic relocs that apply to
   5438  1.7  christos    read-only sections.  */
   5439  1.7  christos 
   5440  1.7  christos static bfd_boolean
   5441  1.7  christos maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
   5442  1.7  christos {
   5443  1.7  christos   asection *sec;
   5444  1.7  christos 
   5445  1.7  christos   if (h->root.type == bfd_link_hash_indirect)
   5446  1.7  christos     return TRUE;
   5447  1.7  christos 
   5448  1.7  christos   sec = readonly_dynrelocs (h);
   5449  1.7  christos   if (sec != NULL)
   5450  1.7  christos     {
   5451  1.1  christos       struct bfd_link_info *info = (struct bfd_link_info *) info_p;
   5452  1.1  christos 
   5453  1.1  christos       info->flags |= DF_TEXTREL;
   5454  1.1  christos       /* xgettext:c-format */
   5455  1.1  christos       info->callbacks->minfo (_("%pB: dynamic relocation against `%pT' "
   5456  1.1  christos 				"in read-only section `%pA'\n"),
   5457  1.1  christos 			      sec->owner, h->root.root.string, sec);
   5458  1.1  christos       if ((info->warn_shared_textrel && bfd_link_pic (info))
   5459  1.1  christos 	  || info->error_textrel)
   5460  1.1  christos 	/* xgettext:c-format */
   5461  1.1  christos 	info->callbacks->einfo (_("%P: %pB: warning: relocation against `%s' "
   5462  1.1  christos 				  "in read-only section `%pA'\n"),
   5463  1.1  christos 				sec->owner, h->root.root.string, sec);
   5464  1.1  christos 
   5465  1.1  christos       /* Not an error, just cut short the traversal.  */
   5466  1.1  christos       return FALSE;
   5467  1.1  christos     }
   5468  1.1  christos   return TRUE;
   5469  1.1  christos }
   5470  1.1  christos 
   5471  1.1  christos static const unsigned char glink_eh_frame_cie[] =
   5472  1.1  christos {
   5473  1.1  christos   0, 0, 0, 16,				/* length.  */
   5474  1.1  christos   0, 0, 0, 0,				/* id.  */
   5475  1.3  christos   1,					/* CIE version.  */
   5476  1.1  christos   'z', 'R', 0,				/* Augmentation string.  */
   5477  1.1  christos   4,					/* Code alignment.  */
   5478  1.1  christos   0x7c,					/* Data alignment.  */
   5479  1.1  christos   65,					/* RA reg.  */
   5480  1.1  christos   1,					/* Augmentation size.  */
   5481  1.1  christos   DW_EH_PE_pcrel | DW_EH_PE_sdata4,	/* FDE encoding.  */
   5482  1.1  christos   DW_CFA_def_cfa, 1, 0			/* def_cfa: r1 offset 0.  */
   5483  1.1  christos };
   5484  1.1  christos 
   5485  1.1  christos /* Set the sizes of the dynamic sections.  */
   5486  1.1  christos 
   5487  1.1  christos static bfd_boolean
   5488  1.1  christos ppc_elf_size_dynamic_sections (bfd *output_bfd,
   5489  1.1  christos 			       struct bfd_link_info *info)
   5490  1.1  christos {
   5491  1.1  christos   struct ppc_elf_link_hash_table *htab;
   5492  1.1  christos   asection *s;
   5493  1.3  christos   bfd_boolean relocs;
   5494  1.1  christos   bfd *ibfd;
   5495  1.1  christos 
   5496  1.1  christos #ifdef DEBUG
   5497  1.1  christos   fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
   5498  1.1  christos #endif
   5499  1.1  christos 
   5500  1.1  christos   htab = ppc_elf_hash_table (info);
   5501  1.1  christos   BFD_ASSERT (htab->elf.dynobj != NULL);
   5502  1.1  christos 
   5503  1.1  christos   if (elf_hash_table (info)->dynamic_sections_created)
   5504  1.1  christos     {
   5505  1.1  christos       /* Set the contents of the .interp section to the interpreter.  */
   5506  1.1  christos       if (bfd_link_executable (info) && !info->nointerp)
   5507  1.1  christos 	{
   5508  1.1  christos 	  s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
   5509  1.3  christos 	  BFD_ASSERT (s != NULL);
   5510  1.1  christos 	  s->size = sizeof ELF_DYNAMIC_INTERPRETER;
   5511  1.1  christos 	  s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
   5512  1.1  christos 	}
   5513  1.1  christos     }
   5514  1.1  christos 
   5515  1.1  christos   if (htab->plt_type == PLT_OLD)
   5516  1.1  christos     htab->got_header_size = 16;
   5517  1.1  christos   else if (htab->plt_type == PLT_NEW)
   5518  1.1  christos     htab->got_header_size = 12;
   5519  1.1  christos 
   5520  1.1  christos   /* Set up .got offsets for local syms, and space for local dynamic
   5521  1.1  christos      relocs.  */
   5522  1.1  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   5523  1.1  christos     {
   5524  1.3  christos       bfd_signed_vma *local_got;
   5525  1.1  christos       bfd_signed_vma *end_local_got;
   5526  1.3  christos       struct plt_entry **local_plt;
   5527  1.1  christos       struct plt_entry **end_local_plt;
   5528  1.1  christos       char *lgot_masks;
   5529  1.1  christos       bfd_size_type locsymcount;
   5530  1.1  christos       Elf_Internal_Shdr *symtab_hdr;
   5531  1.1  christos 
   5532  1.1  christos       if (!is_ppc_elf (ibfd))
   5533  1.1  christos 	continue;
   5534  1.1  christos 
   5535  1.1  christos       for (s = ibfd->sections; s != NULL; s = s->next)
   5536  1.1  christos 	{
   5537  1.1  christos 	  struct ppc_dyn_relocs *p;
   5538  1.1  christos 
   5539  1.1  christos 	  for (p = ((struct ppc_dyn_relocs *)
   5540  1.1  christos 		    elf_section_data (s)->local_dynrel);
   5541  1.1  christos 	       p != NULL;
   5542  1.1  christos 	       p = p->next)
   5543  1.1  christos 	    {
   5544  1.1  christos 	      if (!bfd_is_abs_section (p->sec)
   5545  1.1  christos 		  && bfd_is_abs_section (p->sec->output_section))
   5546  1.1  christos 		{
   5547  1.1  christos 		  /* Input section has been discarded, either because
   5548  1.1  christos 		     it is a copy of a linkonce section or due to
   5549  1.3  christos 		     linker script /DISCARD/, so we'll be discarding
   5550  1.7  christos 		     the relocs too.  */
   5551  1.1  christos 		}
   5552  1.1  christos 	      else if (htab->is_vxworks
   5553  1.1  christos 		       && strcmp (p->sec->output_section->name,
   5554  1.1  christos 				  ".tls_vars") == 0)
   5555  1.7  christos 		{
   5556  1.7  christos 		  /* Relocations in vxworks .tls_vars sections are
   5557  1.7  christos 		     handled specially by the loader.  */
   5558  1.7  christos 		}
   5559  1.7  christos 	      else if (p->count != 0)
   5560  1.1  christos 		{
   5561  1.1  christos 		  asection *sreloc = elf_section_data (p->sec)->sreloc;
   5562  1.1  christos 		  if (p->ifunc)
   5563  1.1  christos 		    sreloc = htab->elf.irelplt;
   5564  1.1  christos 		  sreloc->size += p->count * sizeof (Elf32_External_Rela);
   5565  1.1  christos 		  if ((p->sec->output_section->flags
   5566  1.1  christos 		       & (SEC_READONLY | SEC_ALLOC))
   5567  1.1  christos 		      == (SEC_READONLY | SEC_ALLOC))
   5568  1.1  christos 		    {
   5569  1.1  christos 		      info->flags |= DF_TEXTREL;
   5570  1.1  christos 		      info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
   5571  1.1  christos 					      p->sec->owner, p->sec);
   5572  1.1  christos 		    }
   5573  1.1  christos 		}
   5574  1.1  christos 	    }
   5575  1.1  christos 	}
   5576  1.1  christos 
   5577  1.1  christos       local_got = elf_local_got_refcounts (ibfd);
   5578  1.7  christos       if (!local_got)
   5579  1.7  christos 	continue;
   5580  1.7  christos 
   5581  1.7  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   5582  1.1  christos       locsymcount = symtab_hdr->sh_info;
   5583  1.1  christos       end_local_got = local_got + locsymcount;
   5584  1.1  christos       local_plt = (struct plt_entry **) end_local_got;
   5585  1.1  christos       end_local_plt = local_plt + locsymcount;
   5586  1.1  christos       lgot_masks = (char *) end_local_plt;
   5587  1.9  christos 
   5588  1.9  christos       for (; local_got < end_local_got; ++local_got, ++lgot_masks)
   5589  1.9  christos 	if (*local_got > 0)
   5590  1.3  christos 	  {
   5591  1.7  christos 	    unsigned int need;
   5592  1.7  christos 	    if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5593  1.9  christos 	      htab->tlsld_got.refcount += 1;
   5594  1.7  christos 	    need = got_entries_needed (*lgot_masks);
   5595  1.7  christos 	    if (need == 0)
   5596  1.7  christos 	      *local_got = (bfd_vma) -1;
   5597  1.7  christos 	    else
   5598  1.3  christos 	      {
   5599  1.1  christos 		*local_got = allocate_got (htab, need);
   5600  1.1  christos 		if (bfd_link_pic (info)
   5601  1.1  christos 		    && !((*lgot_masks & TLS_TLS) != 0
   5602  1.1  christos 			 && bfd_link_executable (info)))
   5603  1.1  christos 		  {
   5604  1.1  christos 		    asection *srel;
   5605  1.1  christos 
   5606  1.1  christos 		    need *= sizeof (Elf32_External_Rela) / 4;
   5607  1.1  christos 		    srel = htab->elf.srelgot;
   5608  1.7  christos 		    if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5609  1.7  christos 		      srel = htab->elf.irelplt;
   5610  1.1  christos 		    srel->size += need;
   5611  1.1  christos 		  }
   5612  1.1  christos 	      }
   5613  1.7  christos 	  }
   5614  1.1  christos 	else
   5615  1.1  christos 	  *local_got = (bfd_vma) -1;
   5616  1.1  christos 
   5617  1.1  christos       if (htab->is_vxworks)
   5618  1.7  christos 	continue;
   5619  1.7  christos 
   5620  1.7  christos       /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt.  */
   5621  1.7  christos       lgot_masks = (char *) end_local_plt;
   5622  1.7  christos       for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
   5623  1.7  christos 	{
   5624  1.7  christos 	  struct plt_entry *ent;
   5625  1.7  christos 	  bfd_boolean doneone = FALSE;
   5626  1.7  christos 	  bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
   5627  1.7  christos 
   5628  1.1  christos 	  for (ent = *local_plt; ent != NULL; ent = ent->next)
   5629  1.1  christos 	    if (ent->plt.refcount > 0)
   5630  1.1  christos 	      {
   5631  1.1  christos 		if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5632  1.1  christos 		  s = htab->elf.iplt;
   5633  1.1  christos 		else if (htab->can_convert_all_inline_plt
   5634  1.1  christos 			 || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
   5635  1.1  christos 		  {
   5636  1.7  christos 		    ent->plt.offset = (bfd_vma) -1;
   5637  1.1  christos 		    continue;
   5638  1.7  christos 		  }
   5639  1.1  christos 		else
   5640  1.7  christos 		  s = htab->pltlocal;
   5641  1.1  christos 
   5642  1.1  christos 		if (!doneone)
   5643  1.1  christos 		  {
   5644  1.1  christos 		    plt_offset = s->size;
   5645  1.1  christos 		    s->size += 4;
   5646  1.7  christos 		  }
   5647  1.7  christos 		ent->plt.offset = plt_offset;
   5648  1.7  christos 
   5649  1.7  christos 		if (s != htab->pltlocal && (!doneone || bfd_link_pic (info)))
   5650  1.7  christos 		  {
   5651  1.7  christos 		    s = htab->glink;
   5652  1.7  christos 		    glink_offset = s->size;
   5653  1.7  christos 		    s->size += GLINK_ENTRY_SIZE (htab, NULL);
   5654  1.7  christos 		  }
   5655  1.7  christos 		ent->glink_offset = glink_offset;
   5656  1.1  christos 
   5657  1.1  christos 		if (!doneone)
   5658  1.1  christos 		  {
   5659  1.1  christos 		    if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5660  1.1  christos 		      {
   5661  1.1  christos 			s = htab->elf.irelplt;
   5662  1.1  christos 			s->size += sizeof (Elf32_External_Rela);
   5663  1.1  christos 		      }
   5664  1.1  christos 		    else if (bfd_link_pic (info))
   5665  1.1  christos 		      {
   5666  1.1  christos 			s = htab->relpltlocal;
   5667  1.1  christos 			s->size += sizeof (Elf32_External_Rela);
   5668  1.1  christos 		      }
   5669  1.1  christos 		    doneone = TRUE;
   5670  1.9  christos 		  }
   5671  1.7  christos 	      }
   5672  1.1  christos 	    else
   5673  1.1  christos 	      ent->plt.offset = (bfd_vma) -1;
   5674  1.1  christos 	}
   5675  1.1  christos     }
   5676  1.7  christos 
   5677  1.1  christos   /* Allocate space for global sym dynamic relocs.  */
   5678  1.1  christos   elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
   5679  1.1  christos 
   5680  1.1  christos   if (htab->tlsld_got.refcount > 0)
   5681  1.1  christos     {
   5682  1.1  christos       htab->tlsld_got.offset = allocate_got (htab, 8);
   5683  1.1  christos       if (bfd_link_dll (info))
   5684  1.7  christos 	htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
   5685  1.1  christos     }
   5686  1.7  christos   else
   5687  1.1  christos     htab->tlsld_got.offset = (bfd_vma) -1;
   5688  1.1  christos 
   5689  1.7  christos   if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
   5690  1.1  christos     {
   5691  1.1  christos       unsigned int g_o_t = 32768;
   5692  1.1  christos 
   5693  1.1  christos       /* If we haven't allocated the header, do so now.  When we get here,
   5694  1.3  christos 	 for old plt/got the got size will be 0 to 32764 (not allocated),
   5695  1.1  christos 	 or 32780 to 65536 (header allocated).  For new plt/got, the
   5696  1.1  christos 	 corresponding ranges are 0 to 32768 and 32780 to 65536.  */
   5697  1.3  christos       if (htab->elf.sgot->size <= 32768)
   5698  1.3  christos 	{
   5699  1.3  christos 	  g_o_t = htab->elf.sgot->size;
   5700  1.3  christos 	  if (htab->plt_type == PLT_OLD)
   5701  1.3  christos 	    g_o_t += 4;
   5702  1.3  christos 	  htab->elf.sgot->size += htab->got_header_size;
   5703  1.3  christos 	}
   5704  1.3  christos 
   5705  1.3  christos       htab->elf.hgot->root.u.def.value = g_o_t;
   5706  1.3  christos     }
   5707  1.3  christos   if (bfd_link_pic (info))
   5708  1.3  christos     {
   5709  1.3  christos       struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   5710  1.1  christos 
   5711  1.1  christos       sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
   5712  1.1  christos       sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
   5713  1.1  christos     }
   5714  1.1  christos   if (info->emitrelocations)
   5715  1.1  christos     {
   5716  1.1  christos       struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   5717  1.1  christos 
   5718  1.7  christos       if (sda != NULL && sda->ref_regular)
   5719  1.7  christos 	sda->root.u.def.section->flags |= SEC_KEEP;
   5720  1.1  christos       sda = htab->sdata[1].sym;
   5721  1.3  christos       if (sda != NULL && sda->ref_regular)
   5722  1.3  christos 	sda->root.u.def.section->flags |= SEC_KEEP;
   5723  1.1  christos     }
   5724  1.1  christos 
   5725  1.3  christos   if (htab->glink != NULL
   5726  1.1  christos       && htab->glink->size != 0
   5727  1.1  christos       && htab->elf.dynamic_sections_created)
   5728  1.1  christos     {
   5729  1.1  christos       htab->glink_pltresolve = htab->glink->size;
   5730  1.1  christos       /* Space for the branch table.  */
   5731  1.1  christos       htab->glink->size
   5732  1.1  christos 	+= htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
   5733  1.1  christos       /* Pad out to align the start of PLTresolve.  */
   5734  1.1  christos       htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
   5735  1.1  christos 						 ? 63 : 15);
   5736  1.1  christos       htab->glink->size += GLINK_PLTRESOLVE;
   5737  1.1  christos 
   5738  1.1  christos       if (htab->params->emit_stub_syms)
   5739  1.1  christos 	{
   5740  1.1  christos 	  struct elf_link_hash_entry *sh;
   5741  1.1  christos 	  sh = elf_link_hash_lookup (&htab->elf, "__glink",
   5742  1.3  christos 				     TRUE, FALSE, FALSE);
   5743  1.1  christos 	  if (sh == NULL)
   5744  1.1  christos 	    return FALSE;
   5745  1.1  christos 	  if (sh->root.type == bfd_link_hash_new)
   5746  1.1  christos 	    {
   5747  1.1  christos 	      sh->root.type = bfd_link_hash_defined;
   5748  1.1  christos 	      sh->root.u.def.section = htab->glink;
   5749  1.1  christos 	      sh->root.u.def.value = htab->glink_pltresolve;
   5750  1.1  christos 	      sh->ref_regular = 1;
   5751  1.1  christos 	      sh->def_regular = 1;
   5752  1.1  christos 	      sh->ref_regular_nonweak = 1;
   5753  1.1  christos 	      sh->forced_local = 1;
   5754  1.1  christos 	      sh->non_elf = 0;
   5755  1.1  christos 	      sh->root.linker_def = 1;
   5756  1.1  christos 	    }
   5757  1.1  christos 	  sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
   5758  1.3  christos 				     TRUE, FALSE, FALSE);
   5759  1.1  christos 	  if (sh == NULL)
   5760  1.1  christos 	    return FALSE;
   5761  1.1  christos 	  if (sh->root.type == bfd_link_hash_new)
   5762  1.1  christos 	    {
   5763  1.1  christos 	      sh->root.type = bfd_link_hash_defined;
   5764  1.1  christos 	      sh->root.u.def.section = htab->glink;
   5765  1.1  christos 	      sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
   5766  1.1  christos 	      sh->ref_regular = 1;
   5767  1.1  christos 	      sh->def_regular = 1;
   5768  1.1  christos 	      sh->ref_regular_nonweak = 1;
   5769  1.1  christos 	      sh->forced_local = 1;
   5770  1.1  christos 	      sh->non_elf = 0;
   5771  1.3  christos 	      sh->root.linker_def = 1;
   5772  1.1  christos 	    }
   5773  1.1  christos 	}
   5774  1.1  christos     }
   5775  1.1  christos 
   5776  1.1  christos   if (htab->glink != NULL
   5777  1.1  christos       && htab->glink->size != 0
   5778  1.1  christos       && htab->glink_eh_frame != NULL
   5779  1.1  christos       && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
   5780  1.1  christos       && _bfd_elf_eh_frame_present (info))
   5781  1.1  christos     {
   5782  1.1  christos       s = htab->glink_eh_frame;
   5783  1.1  christos       s->size = sizeof (glink_eh_frame_cie) + 20;
   5784  1.1  christos       if (bfd_link_pic (info))
   5785  1.1  christos 	{
   5786  1.1  christos 	  s->size += 4;
   5787  1.1  christos 	  if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
   5788  1.1  christos 	    s->size += 4;
   5789  1.7  christos 	}
   5790  1.7  christos     }
   5791  1.1  christos 
   5792  1.1  christos   /* We've now determined the sizes of the various dynamic sections.
   5793  1.1  christos      Allocate memory for them.  */
   5794  1.1  christos   relocs = FALSE;
   5795  1.1  christos   for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
   5796  1.1  christos     {
   5797  1.1  christos       bfd_boolean strip_section = TRUE;
   5798  1.1  christos 
   5799  1.1  christos       if ((s->flags & SEC_LINKER_CREATED) == 0)
   5800  1.7  christos 	continue;
   5801  1.7  christos 
   5802  1.1  christos       if (s == htab->elf.splt
   5803  1.1  christos 	  || s == htab->elf.sgot)
   5804  1.7  christos 	{
   5805  1.1  christos 	  /* We'd like to strip these sections if they aren't needed, but if
   5806  1.7  christos 	     we've exported dynamic symbols from them we must leave them.
   5807  1.7  christos 	     It's too late to tell BFD to get rid of the symbols.  */
   5808  1.3  christos 	  if (htab->elf.hplt != NULL)
   5809  1.3  christos 	    strip_section = FALSE;
   5810  1.3  christos 	  /* Strip this section if we don't need it; see the
   5811  1.3  christos 	     comment below.  */
   5812  1.3  christos 	}
   5813  1.1  christos       else if (s == htab->elf.iplt
   5814  1.1  christos 	       || s == htab->pltlocal
   5815  1.3  christos 	       || s == htab->glink
   5816  1.1  christos 	       || s == htab->glink_eh_frame
   5817  1.9  christos 	       || s == htab->elf.sgotplt
   5818  1.1  christos 	       || s == htab->sbss
   5819  1.1  christos 	       || s == htab->elf.sdynbss
   5820  1.1  christos 	       || s == htab->elf.sdynrelro
   5821  1.1  christos 	       || s == htab->dynsbss)
   5822  1.1  christos 	{
   5823  1.1  christos 	  /* Strip these too.  */
   5824  1.1  christos 	}
   5825  1.1  christos       else if (s == htab->sdata[0].section
   5826  1.1  christos 	       || s == htab->sdata[1].section)
   5827  1.1  christos 	{
   5828  1.1  christos 	  strip_section = (s->flags & SEC_KEEP) == 0;
   5829  1.1  christos 	}
   5830  1.1  christos       else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
   5831  1.1  christos 	{
   5832  1.1  christos 	  if (s->size != 0)
   5833  1.1  christos 	    {
   5834  1.1  christos 	      /* Remember whether there are any relocation sections.  */
   5835  1.1  christos 	      relocs = TRUE;
   5836  1.1  christos 
   5837  1.1  christos 	      /* We use the reloc_count field as a counter if we need
   5838  1.1  christos 		 to copy relocs into the output file.  */
   5839  1.1  christos 	      s->reloc_count = 0;
   5840  1.1  christos 	    }
   5841  1.1  christos 	}
   5842  1.1  christos       else
   5843  1.1  christos 	{
   5844  1.1  christos 	  /* It's not one of our sections, so don't allocate space.  */
   5845  1.1  christos 	  continue;
   5846  1.1  christos 	}
   5847  1.1  christos 
   5848  1.1  christos       if (s->size == 0 && strip_section)
   5849  1.1  christos 	{
   5850  1.1  christos 	  /* If we don't need this section, strip it from the
   5851  1.1  christos 	     output file.  This is mostly to handle .rela.bss and
   5852  1.1  christos 	     .rela.plt.  We must create both sections in
   5853  1.1  christos 	     create_dynamic_sections, because they must be created
   5854  1.1  christos 	     before the linker maps input sections to output
   5855  1.1  christos 	     sections.  The linker does that before
   5856  1.1  christos 	     adjust_dynamic_symbol is called, and it is that
   5857  1.1  christos 	     function which decides whether anything needs to go
   5858  1.1  christos 	     into these sections.  */
   5859  1.1  christos 	  s->flags |= SEC_EXCLUDE;
   5860  1.1  christos 	  continue;
   5861  1.1  christos 	}
   5862  1.1  christos 
   5863  1.1  christos       if ((s->flags & SEC_HAS_CONTENTS) == 0)
   5864  1.1  christos 	continue;
   5865  1.1  christos 
   5866  1.1  christos       /* Allocate memory for the section contents.  */
   5867  1.1  christos       s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
   5868  1.1  christos       if (s->contents == NULL)
   5869  1.3  christos 	return FALSE;
   5870  1.1  christos     }
   5871  1.1  christos 
   5872  1.1  christos   if (htab->elf.dynamic_sections_created)
   5873  1.1  christos     {
   5874  1.1  christos       /* Add some entries to the .dynamic section.  We fill in the
   5875  1.7  christos 	 values later, in ppc_elf_finish_dynamic_sections, but we
   5876  1.1  christos 	 must add the entries now so that we get the correct size for
   5877  1.1  christos 	 the .dynamic section.  The DT_DEBUG entry is filled in by the
   5878  1.1  christos 	 dynamic linker and used by the debugger.  */
   5879  1.1  christos #define add_dynamic_entry(TAG, VAL) \
   5880  1.1  christos   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
   5881  1.1  christos 
   5882  1.1  christos       if (bfd_link_executable (info))
   5883  1.1  christos 	{
   5884  1.3  christos 	  if (!add_dynamic_entry (DT_DEBUG, 0))
   5885  1.3  christos 	    return FALSE;
   5886  1.3  christos 	}
   5887  1.1  christos 
   5888  1.1  christos       if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
   5889  1.1  christos 	{
   5890  1.3  christos 	  if (!add_dynamic_entry (DT_PLTGOT, 0)
   5891  1.1  christos 	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
   5892  1.1  christos 	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
   5893  1.3  christos 	      || !add_dynamic_entry (DT_JMPREL, 0))
   5894  1.1  christos 	    return FALSE;
   5895  1.1  christos 	}
   5896  1.1  christos 
   5897  1.1  christos       if (htab->plt_type == PLT_NEW
   5898  1.1  christos 	  && htab->glink != NULL
   5899  1.1  christos 	  && htab->glink->size != 0)
   5900  1.1  christos 	{
   5901  1.1  christos 	  if (!add_dynamic_entry (DT_PPC_GOT, 0))
   5902  1.1  christos 	    return FALSE;
   5903  1.1  christos 	  if (!htab->params->no_tls_get_addr_opt
   5904  1.1  christos 	      && htab->tls_get_addr != NULL
   5905  1.1  christos 	      && htab->tls_get_addr->plt.plist != NULL
   5906  1.1  christos 	      && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
   5907  1.1  christos 	    return FALSE;
   5908  1.1  christos 	}
   5909  1.1  christos 
   5910  1.1  christos       if (relocs)
   5911  1.1  christos 	{
   5912  1.1  christos 	  if (!add_dynamic_entry (DT_RELA, 0)
   5913  1.1  christos 	      || !add_dynamic_entry (DT_RELASZ, 0)
   5914  1.1  christos 	      || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
   5915  1.1  christos 	    return FALSE;
   5916  1.1  christos 	}
   5917  1.1  christos 
   5918  1.1  christos       /* If any dynamic relocs apply to a read-only section, then we
   5919  1.1  christos 	 need a DT_TEXTREL entry.  */
   5920  1.1  christos       if ((info->flags & DF_TEXTREL) == 0)
   5921  1.1  christos 	elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
   5922  1.1  christos 				info);
   5923  1.1  christos 
   5924  1.1  christos       if ((info->flags & DF_TEXTREL) != 0)
   5925  1.1  christos 	{
   5926  1.1  christos 	  if (!add_dynamic_entry (DT_TEXTREL, 0))
   5927  1.1  christos 	    return FALSE;
   5928  1.1  christos 	}
   5929  1.1  christos       if (htab->is_vxworks
   5930  1.1  christos 	  && !elf_vxworks_add_dynamic_entries (output_bfd, info))
   5931  1.1  christos 	return FALSE;
   5932  1.1  christos    }
   5933  1.1  christos #undef add_dynamic_entry
   5934  1.1  christos 
   5935  1.1  christos   if (htab->glink_eh_frame != NULL
   5936  1.1  christos       && htab->glink_eh_frame->contents != NULL)
   5937  1.1  christos     {
   5938  1.1  christos       unsigned char *p = htab->glink_eh_frame->contents;
   5939  1.1  christos       bfd_vma val;
   5940  1.1  christos 
   5941  1.1  christos       memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
   5942  1.1  christos       /* CIE length (rewrite in case little-endian).  */
   5943  1.1  christos       bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
   5944  1.1  christos       p += sizeof (glink_eh_frame_cie);
   5945  1.1  christos       /* FDE length.  */
   5946  1.1  christos       val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
   5947  1.1  christos       bfd_put_32 (htab->elf.dynobj, val, p);
   5948  1.3  christos       p += 4;
   5949  1.1  christos       /* CIE pointer.  */
   5950  1.1  christos       val = p - htab->glink_eh_frame->contents;
   5951  1.1  christos       bfd_put_32 (htab->elf.dynobj, val, p);
   5952  1.1  christos       p += 4;
   5953  1.1  christos       /* Offset to .glink.  Set later.  */
   5954  1.1  christos       p += 4;
   5955  1.1  christos       /* .glink size.  */
   5956  1.1  christos       bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
   5957  1.1  christos       p += 4;
   5958  1.1  christos       /* Augmentation.  */
   5959  1.1  christos       p += 1;
   5960  1.1  christos 
   5961  1.1  christos       if (bfd_link_pic (info)
   5962  1.1  christos 	  && htab->elf.dynamic_sections_created)
   5963  1.1  christos 	{
   5964  1.1  christos 	  bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
   5965  1.1  christos 	  if (adv < 64)
   5966  1.1  christos 	    *p++ = DW_CFA_advance_loc + adv;
   5967  1.1  christos 	  else if (adv < 256)
   5968  1.1  christos 	    {
   5969  1.1  christos 	      *p++ = DW_CFA_advance_loc1;
   5970  1.1  christos 	      *p++ = adv;
   5971  1.1  christos 	    }
   5972  1.1  christos 	  else if (adv < 65536)
   5973  1.1  christos 	    {
   5974  1.1  christos 	      *p++ = DW_CFA_advance_loc2;
   5975  1.1  christos 	      bfd_put_16 (htab->elf.dynobj, adv, p);
   5976  1.1  christos 	      p += 2;
   5977  1.1  christos 	    }
   5978  1.1  christos 	  else
   5979  1.1  christos 	    {
   5980  1.1  christos 	      *p++ = DW_CFA_advance_loc4;
   5981  1.1  christos 	      bfd_put_32 (htab->elf.dynobj, adv, p);
   5982  1.1  christos 	      p += 4;
   5983  1.1  christos 	    }
   5984  1.1  christos 	  *p++ = DW_CFA_register;
   5985  1.3  christos 	  *p++ = 65;
   5986  1.3  christos 	  p++;
   5987  1.3  christos 	  *p++ = DW_CFA_advance_loc + 4;
   5988  1.3  christos 	  *p++ = DW_CFA_restore_extended;
   5989  1.3  christos 	  *p++ = 65;
   5990  1.3  christos 	}
   5991  1.3  christos       BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
   5992  1.3  christos 		  == htab->glink_eh_frame->size);
   5993  1.3  christos     }
   5994  1.3  christos 
   5995  1.3  christos   return TRUE;
   5996  1.3  christos }
   5997  1.3  christos 
   5998  1.3  christos /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
   5999  1.3  christos    if it looks like nothing is using them.  */
   6000  1.3  christos 
   6001  1.3  christos static void
   6002  1.3  christos maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
   6003  1.3  christos {
   6004  1.3  christos   struct elf_link_hash_entry *sda = lsect->sym;
   6005  1.3  christos 
   6006  1.3  christos   if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
   6007  1.3  christos     {
   6008  1.3  christos       asection *s;
   6009  1.3  christos 
   6010  1.3  christos       s = bfd_get_section_by_name (output_bfd, lsect->name);
   6011  1.3  christos       if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
   6012  1.3  christos 	{
   6013  1.3  christos 	  s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
   6014  1.3  christos 	  if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
   6015  1.3  christos 	    {
   6016  1.3  christos 	      sda->def_regular = 0;
   6017  1.3  christos 	      /* This is somewhat magic.  See elf_link_output_extsym.  */
   6018  1.3  christos 	      sda->ref_dynamic = 1;
   6019  1.3  christos 	      sda->forced_local = 0;
   6020  1.3  christos 	    }
   6021  1.3  christos 	}
   6022  1.3  christos     }
   6023  1.3  christos }
   6024  1.3  christos 
   6025  1.1  christos void
   6026  1.1  christos ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
   6027  1.1  christos {
   6028  1.1  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   6029  1.1  christos 
   6030  1.1  christos   if (htab != NULL)
   6031  1.1  christos     {
   6032  1.1  christos       maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
   6033  1.1  christos       maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
   6034  1.1  christos     }
   6035  1.1  christos }
   6036  1.1  christos 
   6037  1.1  christos 
   6038  1.1  christos /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
   6039  1.1  christos 
   6040  1.1  christos static bfd_boolean
   6041  1.1  christos ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
   6042  1.1  christos {
   6043  1.1  christos   if (h->plt.plist != NULL
   6044  1.1  christos       && !h->def_regular
   6045  1.1  christos       && (!h->pointer_equality_needed
   6046  1.1  christos 	  || !h->ref_regular_nonweak))
   6047  1.1  christos     return FALSE;
   6048  1.1  christos 
   6049  1.3  christos   return _bfd_elf_hash_symbol (h);
   6050  1.1  christos }
   6051  1.1  christos 
   6052  1.1  christos #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
   6054  1.1  christos 
   6055  1.1  christos /* Relaxation trampolines.  r12 is available for clobbering (r11, is
   6056  1.1  christos    used for some functions that are allowed to break the ABI).  */
   6057  1.1  christos static const int shared_stub_entry[] =
   6058  1.1  christos   {
   6059  1.1  christos     0x7c0802a6, /* mflr 0 */
   6060  1.1  christos     0x429f0005, /* bcl 20, 31, .Lxxx */
   6061  1.1  christos     0x7d8802a6, /* mflr 12 */
   6062  1.1  christos     0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
   6063  1.3  christos     0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
   6064  1.3  christos     0x7c0803a6, /* mtlr 0 */
   6065  1.3  christos     0x7d8903a6, /* mtctr 12 */
   6066  1.3  christos     0x4e800420, /* bctr */
   6067  1.3  christos   };
   6068  1.3  christos 
   6069  1.3  christos static const int stub_entry[] =
   6070  1.3  christos   {
   6071  1.3  christos     0x3d800000, /* lis 12,xxx@ha */
   6072  1.3  christos     0x398c0000, /* addi 12,12,xxx@l */
   6073  1.3  christos     0x7d8903a6, /* mtctr 12 */
   6074  1.1  christos     0x4e800420, /* bctr */
   6075  1.1  christos   };
   6076  1.1  christos 
   6077  1.1  christos struct ppc_elf_relax_info
   6078  1.1  christos {
   6079  1.1  christos   unsigned int workaround_size;
   6080  1.3  christos   unsigned int picfixup_size;
   6081  1.1  christos };
   6082  1.3  christos 
   6083  1.1  christos /* This function implements long branch trampolines, and the ppc476
   6084  1.1  christos    icache bug workaround.  Any section needing trampolines or patch
   6085  1.1  christos    space for the workaround has its size extended so that we can
   6086  1.1  christos    add trampolines at the end of the section.  */
   6087  1.1  christos 
   6088  1.1  christos static bfd_boolean
   6089  1.1  christos ppc_elf_relax_section (bfd *abfd,
   6090  1.1  christos 		       asection *isec,
   6091  1.1  christos 		       struct bfd_link_info *link_info,
   6092  1.1  christos 		       bfd_boolean *again)
   6093  1.1  christos {
   6094  1.3  christos   struct one_branch_fixup
   6095  1.3  christos   {
   6096  1.3  christos     struct one_branch_fixup *next;
   6097  1.1  christos     asection *tsec;
   6098  1.3  christos     /* Final link, can use the symbol offset.  For a
   6099  1.1  christos        relocatable link we use the symbol's index.  */
   6100  1.3  christos     bfd_vma toff;
   6101  1.1  christos     bfd_vma trampoff;
   6102  1.1  christos   };
   6103  1.1  christos 
   6104  1.1  christos   Elf_Internal_Shdr *symtab_hdr;
   6105  1.1  christos   bfd_byte *contents = NULL;
   6106  1.3  christos   Elf_Internal_Sym *isymbuf = NULL;
   6107  1.1  christos   Elf_Internal_Rela *internal_relocs = NULL;
   6108  1.1  christos   Elf_Internal_Rela *irel, *irelend = NULL;
   6109  1.3  christos   struct one_branch_fixup *branch_fixups = NULL;
   6110  1.3  christos   struct ppc_elf_relax_info *relax_info = NULL;
   6111  1.1  christos   unsigned changes = 0;
   6112  1.1  christos   bfd_boolean workaround_change;
   6113  1.1  christos   struct ppc_elf_link_hash_table *htab;
   6114  1.1  christos   bfd_size_type trampbase, trampoff, newsize, picfixup_size;
   6115  1.1  christos   asection *got2;
   6116  1.3  christos   bfd_boolean maybe_pasted;
   6117  1.3  christos 
   6118  1.3  christos   *again = FALSE;
   6119  1.3  christos 
   6120  1.3  christos   /* No need to do anything with non-alloc or non-code sections.  */
   6121  1.3  christos   if ((isec->flags & SEC_ALLOC) == 0
   6122  1.3  christos       || (isec->flags & SEC_CODE) == 0
   6123  1.3  christos       || (isec->flags & SEC_LINKER_CREATED) != 0
   6124  1.3  christos       || isec->size < 4)
   6125  1.3  christos     return TRUE;
   6126  1.3  christos 
   6127  1.3  christos   /* We cannot represent the required PIC relocs in the output, so don't
   6128  1.3  christos      do anything.  The linker doesn't support mixing -shared and -r
   6129  1.3  christos      anyway.  */
   6130  1.3  christos   if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
   6131  1.3  christos     return TRUE;
   6132  1.3  christos 
   6133  1.3  christos   htab = ppc_elf_hash_table (link_info);
   6134  1.3  christos   if (htab == NULL)
   6135  1.3  christos     return TRUE;
   6136  1.3  christos 
   6137  1.3  christos   isec->size = (isec->size + 3) & -4;
   6138  1.3  christos   if (isec->rawsize == 0)
   6139  1.3  christos     isec->rawsize = isec->size;
   6140  1.3  christos   trampbase = isec->size;
   6141  1.3  christos 
   6142  1.3  christos   BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
   6143  1.3  christos 	      || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
   6144  1.3  christos   isec->sec_info_type = SEC_INFO_TYPE_TARGET;
   6145  1.1  christos 
   6146  1.1  christos   if (htab->params->ppc476_workaround
   6147  1.1  christos       || htab->params->pic_fixup > 0)
   6148  1.1  christos     {
   6149  1.3  christos       if (elf_section_data (isec)->sec_info == NULL)
   6150  1.3  christos 	{
   6151  1.1  christos 	  elf_section_data (isec)->sec_info
   6152  1.1  christos 	    = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
   6153  1.1  christos 	  if (elf_section_data (isec)->sec_info == NULL)
   6154  1.3  christos 	    return FALSE;
   6155  1.3  christos 	}
   6156  1.3  christos       relax_info = elf_section_data (isec)->sec_info;
   6157  1.3  christos       trampbase -= relax_info->workaround_size;
   6158  1.3  christos     }
   6159  1.3  christos 
   6160  1.3  christos   maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
   6161  1.3  christos 		  || strcmp (isec->output_section->name, ".fini") == 0);
   6162  1.3  christos   /* Space for a branch around any trampolines.  */
   6163  1.3  christos   trampoff = trampbase;
   6164  1.3  christos   if (maybe_pasted && trampbase == isec->rawsize)
   6165  1.3  christos     trampoff += 4;
   6166  1.1  christos 
   6167  1.3  christos   symtab_hdr = &elf_symtab_hdr (abfd);
   6168  1.1  christos   picfixup_size = 0;
   6169  1.3  christos   if (htab->params->branch_trampolines
   6170  1.3  christos       || htab->params->pic_fixup > 0)
   6171  1.1  christos     {
   6172  1.3  christos       /* Get a copy of the native relocations.  */
   6173  1.3  christos       if (isec->reloc_count != 0)
   6174  1.3  christos 	{
   6175  1.3  christos 	  internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
   6176  1.3  christos 						       link_info->keep_memory);
   6177  1.3  christos 	  if (internal_relocs == NULL)
   6178  1.3  christos 	    goto error_return;
   6179  1.3  christos 	}
   6180  1.3  christos 
   6181  1.7  christos       got2 = bfd_get_section_by_name (abfd, ".got2");
   6182  1.3  christos 
   6183  1.3  christos       irelend = internal_relocs + isec->reloc_count;
   6184  1.3  christos       for (irel = internal_relocs; irel < irelend; irel++)
   6185  1.3  christos 	{
   6186  1.3  christos 	  unsigned long r_type = ELF32_R_TYPE (irel->r_info);
   6187  1.3  christos 	  bfd_vma toff, roff;
   6188  1.3  christos 	  asection *tsec;
   6189  1.3  christos 	  struct one_branch_fixup *f;
   6190  1.7  christos 	  size_t insn_offset = 0;
   6191  1.3  christos 	  bfd_vma max_branch_offset = 0, val;
   6192  1.3  christos 	  bfd_byte *hit_addr;
   6193  1.1  christos 	  unsigned long t0;
   6194  1.3  christos 	  struct elf_link_hash_entry *h;
   6195  1.3  christos 	  Elf_Internal_Sym *isym;
   6196  1.3  christos 	  struct plt_entry **plist;
   6197  1.3  christos 	  unsigned char sym_type;
   6198  1.3  christos 
   6199  1.1  christos 	  switch (r_type)
   6200  1.3  christos 	    {
   6201  1.3  christos 	    case R_PPC_REL24:
   6202  1.3  christos 	    case R_PPC_LOCAL24PC:
   6203  1.3  christos 	    case R_PPC_PLTREL24:
   6204  1.1  christos 	    case R_PPC_PLTCALL:
   6205  1.3  christos 	      max_branch_offset = 1 << 25;
   6206  1.3  christos 	      break;
   6207  1.3  christos 
   6208  1.1  christos 	    case R_PPC_REL14:
   6209  1.3  christos 	    case R_PPC_REL14_BRTAKEN:
   6210  1.7  christos 	    case R_PPC_REL14_BRNTAKEN:
   6211  1.7  christos 	      max_branch_offset = 1 << 15;
   6212  1.7  christos 	      break;
   6213  1.7  christos 
   6214  1.7  christos 	    case R_PPC_ADDR16_HA:
   6215  1.1  christos 	      if (htab->params->pic_fixup > 0)
   6216  1.7  christos 		break;
   6217  1.7  christos 	      continue;
   6218  1.3  christos 
   6219  1.3  christos 	    default:
   6220  1.9  christos 	      continue;
   6221  1.9  christos 	    }
   6222  1.3  christos 
   6223  1.3  christos 	  /* Get the value of the symbol referred to by the reloc.  */
   6224  1.3  christos 	  if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf,
   6225  1.1  christos 			  ELF32_R_SYM (irel->r_info), abfd))
   6226  1.1  christos 	    goto error_return;
   6227  1.3  christos 
   6228  1.7  christos 	  if (isym != NULL)
   6229  1.7  christos 	    {
   6230  1.3  christos 	      if (tsec != NULL)
   6231  1.3  christos 		;
   6232  1.3  christos 	      else if (isym->st_shndx == SHN_ABS)
   6233  1.7  christos 		tsec = bfd_abs_section_ptr;
   6234  1.7  christos 	      else
   6235  1.7  christos 		continue;
   6236  1.3  christos 
   6237  1.3  christos 	      toff = isym->st_value;
   6238  1.3  christos 	      sym_type = ELF_ST_TYPE (isym->st_info);
   6239  1.3  christos 	    }
   6240  1.3  christos 	  else
   6241  1.3  christos 	    {
   6242  1.3  christos 	      if (tsec != NULL)
   6243  1.3  christos 		toff = h->root.u.def.value;
   6244  1.3  christos 	      else if (h->root.type == bfd_link_hash_undefined
   6245  1.3  christos 		       || h->root.type == bfd_link_hash_undefweak)
   6246  1.3  christos 		{
   6247  1.3  christos 		  unsigned long indx;
   6248  1.3  christos 
   6249  1.3  christos 		  indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
   6250  1.3  christos 		  tsec = bfd_und_section_ptr;
   6251  1.3  christos 		  toff = bfd_link_relocatable (link_info) ? indx : 0;
   6252  1.3  christos 		}
   6253  1.3  christos 	      else
   6254  1.3  christos 		continue;
   6255  1.3  christos 
   6256  1.3  christos 	      /* If this branch is to __tls_get_addr then we may later
   6257  1.3  christos 		 optimise away the call.  We won't be needing a long-
   6258  1.3  christos 		 branch stub in that case.  */
   6259  1.3  christos 	      if (bfd_link_executable (link_info)
   6260  1.3  christos 		  && h == htab->tls_get_addr
   6261  1.3  christos 		  && irel != internal_relocs)
   6262  1.3  christos 		{
   6263  1.3  christos 		  unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
   6264  1.3  christos 		  unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
   6265  1.3  christos 		  unsigned int tls_mask = 0;
   6266  1.3  christos 
   6267  1.3  christos 		  /* The previous reloc should be one of R_PPC_TLSGD or
   6268  1.3  christos 		     R_PPC_TLSLD, or for older object files, a reloc
   6269  1.3  christos 		     on the __tls_get_addr arg setup insn.  Get tls
   6270  1.3  christos 		     mask bits from the symbol on that reloc.  */
   6271  1.3  christos 		  if (t_symndx < symtab_hdr->sh_info)
   6272  1.3  christos 		    {
   6273  1.3  christos 		      bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
   6274  1.3  christos 
   6275  1.3  christos 		      if (local_got_offsets != NULL)
   6276  1.3  christos 			{
   6277  1.3  christos 			  struct plt_entry **local_plt = (struct plt_entry **)
   6278  1.1  christos 			    (local_got_offsets + symtab_hdr->sh_info);
   6279  1.3  christos 			  char *lgot_masks = (char *)
   6280  1.3  christos 			    (local_plt + symtab_hdr->sh_info);
   6281  1.3  christos 			  tls_mask = lgot_masks[t_symndx];
   6282  1.1  christos 			}
   6283  1.3  christos 		    }
   6284  1.3  christos 		  else
   6285  1.3  christos 		    {
   6286  1.3  christos 		      struct elf_link_hash_entry *th
   6287  1.3  christos 			= elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
   6288  1.3  christos 
   6289  1.3  christos 		      while (th->root.type == bfd_link_hash_indirect
   6290  1.3  christos 			     || th->root.type == bfd_link_hash_warning)
   6291  1.3  christos 			th = (struct elf_link_hash_entry *) th->root.u.i.link;
   6292  1.3  christos 
   6293  1.3  christos 		      tls_mask
   6294  1.3  christos 			= ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
   6295  1.3  christos 		    }
   6296  1.1  christos 
   6297  1.3  christos 		  /* The mask bits tell us if the call will be
   6298  1.3  christos 		     optimised away.  */
   6299  1.1  christos 		  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
   6300  1.3  christos 		      && (t_rtype == R_PPC_TLSGD
   6301  1.1  christos 			  || t_rtype == R_PPC_GOT_TLSGD16
   6302  1.3  christos 			  || t_rtype == R_PPC_GOT_TLSGD16_LO))
   6303  1.3  christos 		    continue;
   6304  1.3  christos 		  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
   6305  1.3  christos 		      && (t_rtype == R_PPC_TLSLD
   6306  1.3  christos 			  || t_rtype == R_PPC_GOT_TLSLD16
   6307  1.3  christos 			  || t_rtype == R_PPC_GOT_TLSLD16_LO))
   6308  1.3  christos 		    continue;
   6309  1.1  christos 		}
   6310  1.3  christos 
   6311  1.3  christos 	      sym_type = h->type;
   6312  1.3  christos 	    }
   6313  1.3  christos 
   6314  1.3  christos 	  if (r_type == R_PPC_ADDR16_HA)
   6315  1.3  christos 	    {
   6316  1.3  christos 	      if (h != NULL
   6317  1.1  christos 		  && !h->def_regular
   6318  1.3  christos 		  && h->protected_def
   6319  1.3  christos 		  && ppc_elf_hash_entry (h)->has_addr16_ha
   6320  1.3  christos 		  && ppc_elf_hash_entry (h)->has_addr16_lo)
   6321  1.3  christos 		picfixup_size += 12;
   6322  1.3  christos 	      continue;
   6323  1.3  christos 	    }
   6324  1.3  christos 
   6325  1.3  christos 	  /* The condition here under which we call find_plt_ent must
   6326  1.3  christos 	     match that in relocate_section.  If we call find_plt_ent here
   6327  1.3  christos 	     but not in relocate_section, or vice versa, then the branch
   6328  1.3  christos 	     destination used here may be incorrect.  */
   6329  1.3  christos 	  plist = NULL;
   6330  1.1  christos 	  if (h != NULL)
   6331  1.3  christos 	    {
   6332  1.3  christos 	      /* We know is_branch_reloc (r_type) is true.  */
   6333  1.3  christos 	      if (h->type == STT_GNU_IFUNC
   6334  1.3  christos 		  || r_type == R_PPC_PLTREL24)
   6335  1.1  christos 		plist = &h->plt.plist;
   6336  1.3  christos 	    }
   6337  1.3  christos 	  else if (sym_type == STT_GNU_IFUNC
   6338  1.3  christos 		   && elf_local_got_offsets (abfd) != NULL)
   6339  1.3  christos 	    {
   6340  1.1  christos 	      bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
   6341  1.3  christos 	      struct plt_entry **local_plt = (struct plt_entry **)
   6342  1.3  christos 		(local_got_offsets + symtab_hdr->sh_info);
   6343  1.3  christos 	      plist = local_plt + ELF32_R_SYM (irel->r_info);
   6344  1.3  christos 	    }
   6345  1.3  christos 	  if (plist != NULL)
   6346  1.3  christos 	    {
   6347  1.3  christos 	      bfd_vma addend = 0;
   6348  1.3  christos 	      struct plt_entry *ent;
   6349  1.3  christos 
   6350  1.3  christos 	      if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
   6351  1.7  christos 		addend = irel->r_addend;
   6352  1.3  christos 	      ent = find_plt_ent (plist, got2, addend);
   6353  1.3  christos 	      if (ent != NULL)
   6354  1.1  christos 		{
   6355  1.1  christos 		  if (htab->plt_type == PLT_NEW
   6356  1.1  christos 		      || h == NULL
   6357  1.3  christos 		      || !htab->elf.dynamic_sections_created
   6358  1.3  christos 		      || h->dynindx == -1)
   6359  1.3  christos 		    {
   6360  1.3  christos 		      tsec = htab->glink;
   6361  1.3  christos 		      toff = ent->glink_offset;
   6362  1.3  christos 		    }
   6363  1.9  christos 		  else
   6364  1.9  christos 		    {
   6365  1.9  christos 		      tsec = htab->elf.splt;
   6366  1.9  christos 		      toff = ent->plt.offset;
   6367  1.9  christos 		    }
   6368  1.9  christos 		}
   6369  1.9  christos 	    }
   6370  1.9  christos 
   6371  1.9  christos 	  /* If the branch and target are in the same section, you have
   6372  1.9  christos 	     no hope of adding stubs.  We'll error out later should the
   6373  1.9  christos 	     branch overflow.  */
   6374  1.3  christos 	  if (tsec == isec)
   6375  1.3  christos 	    continue;
   6376  1.3  christos 
   6377  1.3  christos 	  /* toff is used for the symbol index when the symbol is
   6378  1.3  christos 	     undefined and we're doing a relocatable link, so we can't
   6379  1.3  christos 	     support addends.  It would be possible to do so by
   6380  1.3  christos 	     putting the addend in one_branch_fixup but addends on
   6381  1.3  christos 	     branches are rare so it hardly seems worth supporting.  */
   6382  1.3  christos 	  if (bfd_link_relocatable (link_info)
   6383  1.3  christos 	      && tsec == bfd_und_section_ptr
   6384  1.3  christos 	      && r_type != R_PPC_PLTREL24
   6385  1.3  christos 	      && irel->r_addend != 0)
   6386  1.3  christos 	    continue;
   6387  1.3  christos 
   6388  1.3  christos 	  /* There probably isn't any reason to handle symbols in
   6389  1.3  christos 	     SEC_MERGE sections;  SEC_MERGE doesn't seem a likely
   6390  1.3  christos 	     attribute for a code section, and we are only looking at
   6391  1.3  christos 	     branches.  However, implement it correctly here as a
   6392  1.3  christos 	     reference for other target relax_section functions.  */
   6393  1.3  christos 	  if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
   6394  1.3  christos 	    {
   6395  1.3  christos 	      /* At this stage in linking, no SEC_MERGE symbol has been
   6396  1.3  christos 		 adjusted, so all references to such symbols need to be
   6397  1.9  christos 		 passed through _bfd_merged_section_offset.  (Later, in
   6398  1.9  christos 		 relocate_section, all SEC_MERGE symbols *except* for
   6399  1.3  christos 		 section symbols have been adjusted.)
   6400  1.3  christos 
   6401  1.3  christos 		 gas may reduce relocations against symbols in SEC_MERGE
   6402  1.3  christos 		 sections to a relocation against the section symbol when
   6403  1.3  christos 		 the original addend was zero.  When the reloc is against
   6404  1.3  christos 		 a section symbol we should include the addend in the
   6405  1.1  christos 		 offset passed to _bfd_merged_section_offset, since the
   6406  1.9  christos 		 location of interest is the original symbol.  On the
   6407  1.9  christos 		 other hand, an access to "sym+addend" where "sym" is not
   6408  1.3  christos 		 a section symbol should not include the addend;  Such an
   6409  1.3  christos 		 access is presumed to be an offset from "sym";  The
   6410  1.3  christos 		 location of interest is just "sym".  */
   6411  1.3  christos 	      if (sym_type == STT_SECTION
   6412  1.1  christos 		  && r_type != R_PPC_PLTREL24)
   6413  1.1  christos 		toff += irel->r_addend;
   6414  1.3  christos 
   6415  1.3  christos 	      toff
   6416  1.3  christos 		= _bfd_merged_section_offset (abfd, &tsec,
   6417  1.3  christos 					      elf_section_data (tsec)->sec_info,
   6418  1.3  christos 					      toff);
   6419  1.3  christos 
   6420  1.3  christos 	      if (sym_type != STT_SECTION
   6421  1.1  christos 		  && r_type != R_PPC_PLTREL24)
   6422  1.3  christos 		toff += irel->r_addend;
   6423  1.1  christos 	    }
   6424  1.9  christos 	  /* PLTREL24 addends are special.  */
   6425  1.9  christos 	  else if (r_type != R_PPC_PLTREL24)
   6426  1.9  christos 	    toff += irel->r_addend;
   6427  1.9  christos 
   6428  1.9  christos 	  /* Attempted -shared link of non-pic code loses.  */
   6429  1.9  christos 	  if ((!bfd_link_relocatable (link_info)
   6430  1.9  christos 	       && tsec == bfd_und_section_ptr)
   6431  1.9  christos 	      || tsec->output_section == NULL
   6432  1.9  christos 	      || (tsec->owner != NULL
   6433  1.9  christos 		  && (tsec->owner->flags & BFD_PLUGIN) != 0))
   6434  1.3  christos 	    continue;
   6435  1.3  christos 
   6436  1.3  christos 	  roff = irel->r_offset;
   6437  1.3  christos 
   6438  1.3  christos 	  /* Avoid creating a lot of unnecessary fixups when
   6439  1.3  christos 	     relocatable if the output section size is such that a
   6440  1.3  christos 	     fixup can be created at final link.
   6441  1.3  christos 	     The max_branch_offset adjustment allows for some number
   6442  1.3  christos 	     of other fixups being needed at final link.  */
   6443  1.3  christos 	  if (bfd_link_relocatable (link_info)
   6444  1.3  christos 	      && (isec->output_section->rawsize - (isec->output_offset + roff)
   6445  1.3  christos 		  < max_branch_offset - (max_branch_offset >> 4)))
   6446  1.3  christos 	    continue;
   6447  1.3  christos 
   6448  1.3  christos 	  /* If the branch is in range, no need to do anything.  */
   6449  1.1  christos 	  if (tsec != bfd_und_section_ptr
   6450  1.3  christos 	      && (!bfd_link_relocatable (link_info)
   6451  1.3  christos 		  /* A relocatable link may have sections moved during
   6452  1.3  christos 		     final link, so do not presume they remain in range.  */
   6453  1.3  christos 		  || tsec->output_section == isec->output_section))
   6454  1.1  christos 	    {
   6455  1.3  christos 	      bfd_vma symaddr, reladdr;
   6456  1.3  christos 
   6457  1.3  christos 	      symaddr = tsec->output_section->vma + tsec->output_offset + toff;
   6458  1.3  christos 	      reladdr = isec->output_section->vma + isec->output_offset + roff;
   6459  1.1  christos 	      if (symaddr - reladdr + max_branch_offset
   6460  1.3  christos 		  < 2 * max_branch_offset)
   6461  1.3  christos 		continue;
   6462  1.3  christos 	    }
   6463  1.3  christos 
   6464  1.3  christos 	  /* Look for an existing fixup to this address.  */
   6465  1.1  christos 	  for (f = branch_fixups; f ; f = f->next)
   6466  1.3  christos 	    if (f->tsec == tsec && f->toff == toff)
   6467  1.3  christos 	      break;
   6468  1.3  christos 
   6469  1.3  christos 	  if (f == NULL)
   6470  1.3  christos 	    {
   6471  1.3  christos 	      size_t size;
   6472  1.3  christos 	      unsigned long stub_rtype;
   6473  1.3  christos 
   6474  1.3  christos 	      val = trampoff - roff;
   6475  1.3  christos 	      if (val >= max_branch_offset)
   6476  1.3  christos 		/* Oh dear, we can't reach a trampoline.  Don't try to add
   6477  1.7  christos 		   one.  We'll report an error later.  */
   6478  1.3  christos 		continue;
   6479  1.3  christos 
   6480  1.3  christos 	      if (bfd_link_pic (link_info))
   6481  1.3  christos 		{
   6482  1.3  christos 		  size = 4 * ARRAY_SIZE (shared_stub_entry);
   6483  1.3  christos 		  insn_offset = 12;
   6484  1.1  christos 		}
   6485  1.3  christos 	      else
   6486  1.3  christos 		{
   6487  1.3  christos 		  size = 4 * ARRAY_SIZE (stub_entry);
   6488  1.3  christos 		  insn_offset = 0;
   6489  1.3  christos 		}
   6490  1.3  christos 	      stub_rtype = R_PPC_RELAX;
   6491  1.3  christos 	      if (tsec == htab->elf.splt
   6492  1.3  christos 		  || tsec == htab->glink)
   6493  1.3  christos 		{
   6494  1.3  christos 		  stub_rtype = R_PPC_RELAX_PLT;
   6495  1.3  christos 		  if (r_type == R_PPC_PLTREL24)
   6496  1.3  christos 		    stub_rtype = R_PPC_RELAX_PLTREL24;
   6497  1.3  christos 		}
   6498  1.3  christos 
   6499  1.3  christos 	      /* Hijack the old relocation.  Since we need two
   6500  1.3  christos 		 relocations for this use a "composite" reloc.  */
   6501  1.1  christos 	      irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
   6502  1.3  christos 					   stub_rtype);
   6503  1.3  christos 	      irel->r_offset = trampoff + insn_offset;
   6504  1.1  christos 	      if (r_type == R_PPC_PLTREL24
   6505  1.1  christos 		  && stub_rtype != R_PPC_RELAX_PLTREL24)
   6506  1.1  christos 		irel->r_addend = 0;
   6507  1.3  christos 
   6508  1.3  christos 	      /* Record the fixup so we don't do it again this section.  */
   6509  1.3  christos 	      f = bfd_malloc (sizeof (*f));
   6510  1.3  christos 	      f->next = branch_fixups;
   6511  1.3  christos 	      f->tsec = tsec;
   6512  1.3  christos 	      f->toff = toff;
   6513  1.1  christos 	      f->trampoff = trampoff;
   6514  1.1  christos 	      branch_fixups = f;
   6515  1.3  christos 
   6516  1.3  christos 	      trampoff += size;
   6517  1.1  christos 	      changes++;
   6518  1.3  christos 	    }
   6519  1.3  christos 	  else
   6520  1.3  christos 	    {
   6521  1.1  christos 	      val = f->trampoff - roff;
   6522  1.3  christos 	      if (val >= max_branch_offset)
   6523  1.1  christos 		continue;
   6524  1.1  christos 
   6525  1.1  christos 	      /* Nop out the reloc, since we're finalizing things here.  */
   6526  1.3  christos 	      irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
   6527  1.3  christos 	    }
   6528  1.3  christos 
   6529  1.3  christos 	  /* Get the section contents.  */
   6530  1.3  christos 	  if (contents == NULL)
   6531  1.3  christos 	    {
   6532  1.3  christos 	      /* Get cached copy if it exists.  */
   6533  1.3  christos 	      if (elf_section_data (isec)->this_hdr.contents != NULL)
   6534  1.3  christos 		contents = elf_section_data (isec)->this_hdr.contents;
   6535  1.3  christos 	      /* Go get them off disk.  */
   6536  1.3  christos 	      else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
   6537  1.3  christos 		goto error_return;
   6538  1.1  christos 	    }
   6539  1.3  christos 
   6540  1.3  christos 	  /* Fix up the existing branch to hit the trampoline.  */
   6541  1.3  christos 	  hit_addr = contents + roff;
   6542  1.3  christos 	  switch (r_type)
   6543  1.3  christos 	    {
   6544  1.3  christos 	    case R_PPC_REL24:
   6545  1.3  christos 	    case R_PPC_LOCAL24PC:
   6546  1.3  christos 	    case R_PPC_PLTREL24:
   6547  1.3  christos 	      t0 = bfd_get_32 (abfd, hit_addr);
   6548  1.1  christos 	      t0 &= ~0x3fffffc;
   6549  1.1  christos 	      t0 |= val & 0x3fffffc;
   6550  1.3  christos 	      bfd_put_32 (abfd, t0, hit_addr);
   6551  1.1  christos 	      break;
   6552  1.3  christos 
   6553  1.3  christos 	    case R_PPC_REL14:
   6554  1.1  christos 	    case R_PPC_REL14_BRTAKEN:
   6555  1.1  christos 	    case R_PPC_REL14_BRNTAKEN:
   6556  1.3  christos 	      t0 = bfd_get_32 (abfd, hit_addr);
   6557  1.1  christos 	      t0 &= ~0xfffc;
   6558  1.3  christos 	      t0 |= val & 0xfffc;
   6559  1.3  christos 	      bfd_put_32 (abfd, t0, hit_addr);
   6560  1.3  christos 	      break;
   6561  1.3  christos 	    }
   6562  1.3  christos 	}
   6563  1.3  christos 
   6564  1.3  christos       while (branch_fixups != NULL)
   6565  1.3  christos 	{
   6566  1.3  christos 	  struct one_branch_fixup *f = branch_fixups;
   6567  1.1  christos 	  branch_fixups = branch_fixups->next;
   6568  1.3  christos 	  free (f);
   6569  1.3  christos 	}
   6570  1.3  christos     }
   6571  1.3  christos 
   6572  1.3  christos   workaround_change = FALSE;
   6573  1.1  christos   newsize = trampoff;
   6574  1.3  christos   if (htab->params->ppc476_workaround
   6575  1.3  christos       && (!bfd_link_relocatable (link_info)
   6576  1.3  christos 	  || isec->output_section->alignment_power >= htab->params->pagesize_p2))
   6577  1.3  christos     {
   6578  1.3  christos       bfd_vma addr, end_addr;
   6579  1.3  christos       unsigned int crossings;
   6580  1.3  christos       bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   6581  1.3  christos 
   6582  1.3  christos       addr = isec->output_section->vma + isec->output_offset;
   6583  1.3  christos       end_addr = addr + trampoff;
   6584  1.3  christos       addr &= -pagesize;
   6585  1.3  christos       crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
   6586  1.1  christos       if (crossings != 0)
   6587  1.3  christos 	{
   6588  1.3  christos 	  /* Keep space aligned, to ensure the patch code itself does
   6589  1.1  christos 	     not cross a page.  Don't decrease size calculated on a
   6590  1.3  christos 	     previous pass as otherwise we might never settle on a layout.  */
   6591  1.3  christos 	  newsize = 15 - ((end_addr - 1) & 15);
   6592  1.3  christos 	  newsize += crossings * 16;
   6593  1.3  christos 	  if (relax_info->workaround_size < newsize)
   6594  1.3  christos 	    {
   6595  1.3  christos 	      relax_info->workaround_size = newsize;
   6596  1.3  christos 	      workaround_change = TRUE;
   6597  1.1  christos 	    }
   6598  1.3  christos 	  /* Ensure relocate_section is called.  */
   6599  1.3  christos 	  isec->flags |= SEC_RELOC;
   6600  1.1  christos 	}
   6601  1.1  christos       newsize = trampoff + relax_info->workaround_size;
   6602  1.1  christos     }
   6603  1.1  christos 
   6604  1.1  christos   if (htab->params->pic_fixup > 0)
   6605  1.1  christos     {
   6606  1.1  christos       picfixup_size -= relax_info->picfixup_size;
   6607  1.1  christos       if (picfixup_size != 0)
   6608  1.1  christos 	relax_info->picfixup_size += picfixup_size;
   6609  1.1  christos       newsize += relax_info->picfixup_size;
   6610  1.1  christos     }
   6611  1.1  christos 
   6612  1.1  christos   if (changes != 0 || picfixup_size != 0 || workaround_change)
   6613  1.1  christos     isec->size = newsize;
   6614  1.1  christos 
   6615  1.1  christos   if (isymbuf != NULL
   6616  1.1  christos       && symtab_hdr->contents != (unsigned char *) isymbuf)
   6617  1.1  christos     {
   6618  1.1  christos       if (! link_info->keep_memory)
   6619  1.1  christos 	free (isymbuf);
   6620  1.1  christos       else
   6621  1.1  christos 	{
   6622  1.1  christos 	  /* Cache the symbols for elf_link_input_bfd.  */
   6623  1.1  christos 	  symtab_hdr->contents = (unsigned char *) isymbuf;
   6624  1.1  christos 	}
   6625  1.3  christos     }
   6626  1.1  christos 
   6627  1.1  christos   if (contents != NULL
   6628  1.1  christos       && elf_section_data (isec)->this_hdr.contents != contents)
   6629  1.1  christos     {
   6630  1.1  christos       if (!changes && !link_info->keep_memory)
   6631  1.1  christos 	free (contents);
   6632  1.1  christos       else
   6633  1.1  christos 	{
   6634  1.1  christos 	  /* Cache the section contents for elf_link_input_bfd.  */
   6635  1.1  christos 	  elf_section_data (isec)->this_hdr.contents = contents;
   6636  1.1  christos 	}
   6637  1.1  christos     }
   6638  1.1  christos 
   6639  1.1  christos   changes += picfixup_size;
   6640  1.1  christos   if (changes != 0)
   6641  1.1  christos     {
   6642  1.1  christos       /* Append sufficient NOP relocs so we can write out relocation
   6643  1.1  christos 	 information for the trampolines.  */
   6644  1.1  christos       Elf_Internal_Shdr *rel_hdr;
   6645  1.1  christos       Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
   6646  1.1  christos 						  * sizeof (*new_relocs));
   6647  1.1  christos       unsigned ix;
   6648  1.1  christos 
   6649  1.1  christos       if (!new_relocs)
   6650  1.1  christos 	goto error_return;
   6651  1.1  christos       memcpy (new_relocs, internal_relocs,
   6652  1.3  christos 	      isec->reloc_count * sizeof (*new_relocs));
   6653  1.3  christos       for (ix = changes; ix--;)
   6654  1.1  christos 	{
   6655  1.1  christos 	  irel = new_relocs + ix + isec->reloc_count;
   6656  1.3  christos 
   6657  1.1  christos 	  irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
   6658  1.1  christos 	}
   6659  1.1  christos       if (internal_relocs != elf_section_data (isec)->relocs)
   6660  1.3  christos 	free (internal_relocs);
   6661  1.3  christos       elf_section_data (isec)->relocs = new_relocs;
   6662  1.3  christos       isec->reloc_count += changes;
   6663  1.3  christos       rel_hdr = _bfd_elf_single_rel_hdr (isec);
   6664  1.3  christos       rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
   6665  1.3  christos     }
   6666  1.1  christos   else if (internal_relocs != NULL
   6667  1.1  christos 	   && elf_section_data (isec)->relocs != internal_relocs)
   6668  1.1  christos     free (internal_relocs);
   6669  1.1  christos 
   6670  1.1  christos   *again = changes != 0 || workaround_change;
   6671  1.1  christos   return TRUE;
   6672  1.1  christos 
   6673  1.1  christos  error_return:
   6674  1.1  christos   while (branch_fixups != NULL)
   6675  1.1  christos     {
   6676  1.1  christos       struct one_branch_fixup *f = branch_fixups;
   6677  1.1  christos       branch_fixups = branch_fixups->next;
   6678  1.1  christos       free (f);
   6679  1.1  christos     }
   6680  1.1  christos   if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
   6681  1.1  christos     free (isymbuf);
   6682  1.1  christos   if (contents != NULL
   6683  1.1  christos       && elf_section_data (isec)->this_hdr.contents != contents)
   6684  1.1  christos     free (contents);
   6685  1.1  christos   if (internal_relocs != NULL
   6686  1.1  christos       && elf_section_data (isec)->relocs != internal_relocs)
   6687  1.1  christos     free (internal_relocs);
   6688  1.1  christos   return FALSE;
   6689  1.1  christos }
   6690  1.1  christos 
   6691  1.1  christos /* What to do when ld finds relocations against symbols defined in
   6693  1.1  christos    discarded sections.  */
   6694  1.1  christos 
   6695  1.1  christos static unsigned int
   6696  1.1  christos ppc_elf_action_discarded (asection *sec)
   6697  1.1  christos {
   6698  1.1  christos   if (strcmp (".fixup", sec->name) == 0)
   6699  1.1  christos     return 0;
   6700  1.1  christos 
   6701  1.1  christos   if (strcmp (".got2", sec->name) == 0)
   6702  1.1  christos     return 0;
   6703  1.1  christos 
   6704  1.1  christos   return _bfd_elf_default_action_discarded (sec);
   6705  1.1  christos }
   6706  1.1  christos 
   6707  1.1  christos /* Fill in the address for a pointer generated in a linker section.  */
   6709  1.1  christos 
   6710  1.1  christos static bfd_vma
   6711  1.1  christos elf_finish_pointer_linker_section (bfd *input_bfd,
   6712  1.1  christos 				   elf_linker_section_t *lsect,
   6713  1.1  christos 				   struct elf_link_hash_entry *h,
   6714  1.1  christos 				   bfd_vma relocation,
   6715  1.1  christos 				   const Elf_Internal_Rela *rel)
   6716  1.1  christos {
   6717  1.1  christos   elf_linker_section_pointers_t *linker_section_ptr;
   6718  1.1  christos 
   6719  1.1  christos   BFD_ASSERT (lsect != NULL);
   6720  1.1  christos 
   6721  1.1  christos   if (h != NULL)
   6722  1.1  christos     {
   6723  1.1  christos       /* Handle global symbol.  */
   6724  1.1  christos       struct ppc_elf_link_hash_entry *eh;
   6725  1.1  christos 
   6726  1.1  christos       eh = (struct ppc_elf_link_hash_entry *) h;
   6727  1.1  christos       BFD_ASSERT (eh->elf.def_regular);
   6728  1.1  christos       linker_section_ptr = eh->linker_section_pointer;
   6729  1.1  christos     }
   6730  1.1  christos   else
   6731  1.1  christos     {
   6732  1.1  christos       /* Handle local symbol.  */
   6733  1.1  christos       unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
   6734  1.1  christos 
   6735  1.1  christos       BFD_ASSERT (is_ppc_elf (input_bfd));
   6736  1.1  christos       BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
   6737  1.1  christos       linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
   6738  1.1  christos     }
   6739  1.1  christos 
   6740  1.1  christos   linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
   6741  1.1  christos 							rel->r_addend,
   6742  1.1  christos 							lsect);
   6743  1.1  christos   BFD_ASSERT (linker_section_ptr != NULL);
   6744  1.1  christos 
   6745  1.1  christos   /* Offset will always be a multiple of four, so use the bottom bit
   6746  1.1  christos      as a "written" flag.  */
   6747  1.1  christos   if ((linker_section_ptr->offset & 1) == 0)
   6748  1.1  christos     {
   6749  1.1  christos       bfd_put_32 (lsect->section->owner,
   6750  1.1  christos 		  relocation + linker_section_ptr->addend,
   6751  1.1  christos 		  lsect->section->contents + linker_section_ptr->offset);
   6752  1.1  christos       linker_section_ptr->offset += 1;
   6753  1.1  christos     }
   6754  1.1  christos 
   6755  1.1  christos   relocation = (lsect->section->output_section->vma
   6756  1.1  christos 		+ lsect->section->output_offset
   6757  1.1  christos 		+ linker_section_ptr->offset - 1
   6758  1.7  christos 		- SYM_VAL (lsect->sym));
   6759  1.7  christos 
   6760  1.1  christos #ifdef DEBUG
   6761  1.1  christos   fprintf (stderr,
   6762  1.1  christos 	   "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
   6763  1.1  christos 	   lsect->name, (long) relocation, (long) relocation);
   6764  1.1  christos #endif
   6765  1.7  christos 
   6766  1.7  christos   return relocation;
   6767  1.7  christos }
   6768  1.7  christos 
   6769  1.7  christos #define PPC_LO(v) ((v) & 0xffff)
   6770  1.7  christos #define PPC_HI(v) (((v) >> 16) & 0xffff)
   6771  1.7  christos #define PPC_HA(v) PPC_HI ((v) + 0x8000)
   6772  1.7  christos 
   6773  1.7  christos static void
   6774  1.7  christos write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
   6775  1.7  christos 		  asection *plt_sec, unsigned char *p,
   6776  1.7  christos 		  struct bfd_link_info *info)
   6777  1.7  christos {
   6778  1.7  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   6779  1.7  christos   bfd *output_bfd = info->output_bfd;
   6780  1.7  christos   bfd_vma plt;
   6781  1.7  christos   unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
   6782  1.7  christos 
   6783  1.7  christos   if (h != NULL
   6784  1.7  christos       && h == htab->tls_get_addr
   6785  1.7  christos       && !htab->params->no_tls_get_addr_opt)
   6786  1.7  christos     {
   6787  1.7  christos       bfd_put_32 (output_bfd, LWZ_11_3, p);
   6788  1.1  christos       p += 4;
   6789  1.1  christos       bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
   6790  1.1  christos       p += 4;
   6791  1.1  christos       bfd_put_32 (output_bfd, MR_0_3, p);
   6792  1.1  christos       p += 4;
   6793  1.3  christos       bfd_put_32 (output_bfd, CMPWI_11_0, p);
   6794  1.1  christos       p += 4;
   6795  1.1  christos       bfd_put_32 (output_bfd, ADD_3_12_2, p);
   6796  1.1  christos       p += 4;
   6797  1.1  christos       bfd_put_32 (output_bfd, BEQLR, p);
   6798  1.1  christos       p += 4;
   6799  1.1  christos       bfd_put_32 (output_bfd, MR_3_0, p);
   6800  1.1  christos       p += 4;
   6801  1.1  christos       bfd_put_32 (output_bfd, NOP, p);
   6802  1.1  christos       p += 4;
   6803  1.1  christos     }
   6804  1.1  christos 
   6805  1.1  christos   plt = ((ent->plt.offset & ~1)
   6806  1.1  christos 	 + plt_sec->output_section->vma
   6807  1.7  christos 	 + plt_sec->output_offset);
   6808  1.1  christos 
   6809  1.1  christos   if (bfd_link_pic (info))
   6810  1.1  christos     {
   6811  1.1  christos       bfd_vma got = 0;
   6812  1.1  christos 
   6813  1.1  christos       if (ent->addend >= 32768)
   6814  1.1  christos 	got = (ent->addend
   6815  1.1  christos 	       + ent->sec->output_section->vma
   6816  1.1  christos 	       + ent->sec->output_offset);
   6817  1.1  christos       else if (htab->elf.hgot != NULL)
   6818  1.1  christos 	got = SYM_VAL (htab->elf.hgot);
   6819  1.1  christos 
   6820  1.7  christos       plt -= got;
   6821  1.7  christos 
   6822  1.7  christos       if (plt + 0x8000 < 0x10000)
   6823  1.7  christos 	bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
   6824  1.7  christos       else
   6825  1.7  christos 	{
   6826  1.7  christos 	  bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
   6827  1.7  christos 	  p += 4;
   6828  1.7  christos 	  bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
   6829  1.1  christos 	}
   6830  1.1  christos     }
   6831  1.1  christos   else
   6832  1.1  christos     {
   6833  1.1  christos       bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
   6834  1.1  christos       p += 4;
   6835  1.1  christos       bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
   6836  1.1  christos     }
   6837  1.1  christos   p += 4;
   6838  1.1  christos   bfd_put_32 (output_bfd, MTCTR_11, p);
   6839  1.1  christos   p += 4;
   6840  1.1  christos   bfd_put_32 (output_bfd, BCTR, p);
   6841  1.1  christos   p += 4;
   6842  1.1  christos   while (p < end)
   6843  1.1  christos     {
   6844  1.1  christos       bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
   6845  1.1  christos       p += 4;
   6846  1.1  christos     }
   6847  1.1  christos }
   6848  1.1  christos 
   6849  1.1  christos /* Return true if symbol is defined statically.  */
   6850  1.1  christos 
   6851  1.1  christos static bfd_boolean
   6852  1.1  christos is_static_defined (struct elf_link_hash_entry *h)
   6853  1.9  christos {
   6854  1.1  christos   return ((h->root.type == bfd_link_hash_defined
   6855  1.1  christos 	   || h->root.type == bfd_link_hash_defweak)
   6856  1.1  christos 	  && h->root.u.def.section != NULL
   6857  1.1  christos 	  && h->root.u.def.section->output_section != NULL);
   6858  1.1  christos }
   6859  1.1  christos 
   6860  1.1  christos /* If INSN is an opcode that may be used with an @tls operand, return
   6861  1.1  christos    the transformed insn for TLS optimisation, otherwise return 0.  If
   6862  1.1  christos    REG is non-zero only match an insn with RB or RA equal to REG.  */
   6863  1.1  christos 
   6864  1.1  christos unsigned int
   6865  1.1  christos _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
   6866  1.1  christos {
   6867  1.1  christos   unsigned int rtra;
   6868  1.1  christos 
   6869  1.1  christos   if ((insn & (0x3fu << 26)) != 31 << 26)
   6870  1.1  christos     return 0;
   6871  1.9  christos 
   6872  1.1  christos   if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
   6873  1.1  christos     rtra = insn & ((1 << 26) - (1 << 16));
   6874  1.9  christos   else if (((insn >> 16) & 0x1f) == reg)
   6875  1.1  christos     rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
   6876  1.1  christos   else
   6877  1.9  christos     return 0;
   6878  1.1  christos 
   6879  1.1  christos   if ((insn & (0x3ff << 1)) == 266 << 1)
   6880  1.1  christos     /* add -> addi.  */
   6881  1.1  christos     insn = 14 << 26;
   6882  1.1  christos   else if ((insn & (0x1f << 1)) == 23 << 1
   6883  1.1  christos 	   && ((insn & (0x1f << 6)) < 14 << 6
   6884  1.1  christos 	       || ((insn & (0x1f << 6)) >= 16 << 6
   6885  1.1  christos 		   && (insn & (0x1f << 6)) < 24 << 6)))
   6886  1.1  christos     /* load and store indexed -> dform.  */
   6887  1.1  christos     insn = (32u | ((insn >> 6) & 0x1f)) << 26;
   6888  1.1  christos   else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
   6889  1.1  christos     /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu.  */
   6890  1.1  christos     insn = ((58u | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
   6891  1.1  christos   else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
   6892  1.9  christos     /* lwax -> lwa.  */
   6893  1.9  christos     insn = (58u << 26) | 2;
   6894  1.9  christos   else
   6895  1.9  christos     return 0;
   6896  1.9  christos   insn |= rtra;
   6897  1.9  christos   return insn;
   6898  1.9  christos }
   6899  1.9  christos 
   6900  1.9  christos /* If INSN is an opcode that may be used with an @tprel operand, return
   6901  1.9  christos    the transformed insn for an undefined weak symbol, ie. with the
   6902  1.9  christos    thread pointer REG operand removed.  Otherwise return 0.  */
   6903  1.9  christos 
   6904  1.9  christos unsigned int
   6905  1.9  christos _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
   6906  1.9  christos {
   6907  1.9  christos   if ((insn & (0x1f << 16)) == reg << 16
   6908  1.1  christos       && ((insn & (0x3fu << 26)) == 14u << 26 /* addi */
   6909  1.9  christos 	  || (insn & (0x3fu << 26)) == 15u << 26 /* addis */
   6910  1.1  christos 	  || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */
   6911  1.1  christos 	  || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */
   6912  1.1  christos 	  || (insn & (0x3fu << 26)) == 36u << 26 /* stw */
   6913  1.1  christos 	  || (insn & (0x3fu << 26)) == 38u << 26 /* stb */
   6914  1.1  christos 	  || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */
   6915  1.9  christos 	  || (insn & (0x3fu << 26)) == 42u << 26 /* lha */
   6916  1.9  christos 	  || (insn & (0x3fu << 26)) == 44u << 26 /* sth */
   6917  1.9  christos 	  || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */
   6918  1.1  christos 	  || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */
   6919  1.1  christos 	  || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */
   6920  1.1  christos 	  || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */
   6921  1.9  christos 	  || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */
   6922  1.1  christos 	  || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */
   6923  1.1  christos 	  || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */
   6924  1.1  christos 	      && (insn & 3) != 1)
   6925  1.1  christos 	  || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */
   6926  1.1  christos 	      && ((insn & 3) == 0 || (insn & 3) == 3))))
   6927  1.1  christos     {
   6928  1.1  christos       insn &= ~(0x1f << 16);
   6929  1.1  christos     }
   6930  1.1  christos   else if ((insn & (0x1f << 21)) == reg << 21
   6931  1.1  christos 	   && ((insn & (0x3eu << 26)) == 24u << 26 /* ori, oris */
   6932  1.9  christos 	       || (insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */
   6933  1.9  christos 	       || (insn & (0x3eu << 26)) == 28u << 26 /* andi,andis */))
   6934  1.9  christos     {
   6935  1.9  christos       insn &= ~(0x1f << 21);
   6936  1.1  christos       insn |= (insn & (0x1f << 16)) << 5;
   6937  1.1  christos       if ((insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */)
   6938  1.1  christos 	insn -= 2 >> 26;  /* convert to ori,oris */
   6939  1.1  christos     }
   6940  1.1  christos   else
   6941  1.9  christos     insn = 0;
   6942  1.9  christos   return insn;
   6943  1.3  christos }
   6944  1.1  christos 
   6945  1.1  christos static bfd_boolean
   6946  1.1  christos is_insn_ds_form (unsigned int insn)
   6947  1.1  christos {
   6948  1.1  christos   return ((insn & (0x3fu << 26)) == 58u << 26 /* ld,ldu,lwa */
   6949  1.1  christos 	  || (insn & (0x3fu << 26)) == 62u << 26 /* std,stdu,stq */
   6950  1.1  christos 	  || (insn & (0x3fu << 26)) == 57u << 26 /* lfdp */
   6951  1.1  christos 	  || (insn & (0x3fu << 26)) == 61u << 26 /* stfdp */);
   6952  1.1  christos }
   6953  1.1  christos 
   6954  1.1  christos static bfd_boolean
   6955  1.1  christos is_insn_dq_form (unsigned int insn)
   6956  1.1  christos {
   6957  1.1  christos   return ((insn & (0x3fu << 26)) == 56u << 26 /* lq */
   6958  1.1  christos 	  || ((insn & (0x3fu << 26)) == (61u << 26) /* lxv, stxv */
   6959  1.1  christos 	      && (insn & 3) == 1));
   6960  1.1  christos }
   6961  1.1  christos 
   6962  1.1  christos /* The RELOCATE_SECTION function is called by the ELF backend linker
   6963  1.1  christos    to handle the relocations for a section.
   6964  1.1  christos 
   6965  1.1  christos    The relocs are always passed as Rela structures; if the section
   6966  1.1  christos    actually uses Rel structures, the r_addend field will always be
   6967  1.1  christos    zero.
   6968  1.1  christos 
   6969  1.1  christos    This function is responsible for adjust the section contents as
   6970  1.1  christos    necessary, and (if using Rela relocs and generating a
   6971  1.1  christos    relocatable output file) adjusting the reloc addend as
   6972  1.1  christos    necessary.
   6973  1.1  christos 
   6974  1.1  christos    This function does not have to worry about setting the reloc
   6975  1.1  christos    address or the reloc symbol index.
   6976  1.1  christos 
   6977  1.1  christos    LOCAL_SYMS is a pointer to the swapped in local symbols.
   6978  1.1  christos 
   6979  1.1  christos    LOCAL_SECTIONS is an array giving the section in the input file
   6980  1.1  christos    corresponding to the st_shndx field of each local symbol.
   6981  1.1  christos 
   6982  1.1  christos    The global hash table entry for the global symbols can be found
   6983  1.1  christos    via elf_sym_hashes (input_bfd).
   6984  1.1  christos 
   6985  1.1  christos    When generating relocatable output, this function must handle
   6986  1.1  christos    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
   6987  1.1  christos    going to be the section symbol corresponding to the output
   6988  1.1  christos    section, which means that the addend must be adjusted
   6989  1.3  christos    accordingly.  */
   6990  1.1  christos 
   6991  1.1  christos static bfd_boolean
   6992  1.3  christos ppc_elf_relocate_section (bfd *output_bfd,
   6993  1.1  christos 			  struct bfd_link_info *info,
   6994  1.1  christos 			  bfd *input_bfd,
   6995  1.7  christos 			  asection *input_section,
   6996  1.1  christos 			  bfd_byte *contents,
   6997  1.3  christos 			  Elf_Internal_Rela *relocs,
   6998  1.3  christos 			  Elf_Internal_Sym *local_syms,
   6999  1.1  christos 			  asection **local_sections)
   7000  1.1  christos {
   7001  1.7  christos   Elf_Internal_Shdr *symtab_hdr;
   7002  1.1  christos   struct elf_link_hash_entry **sym_hashes;
   7003  1.1  christos   struct ppc_elf_link_hash_table *htab;
   7004  1.1  christos   Elf_Internal_Rela *rel;
   7005  1.3  christos   Elf_Internal_Rela *wrel;
   7006  1.1  christos   Elf_Internal_Rela *relend;
   7007  1.1  christos   Elf_Internal_Rela outrel;
   7008  1.9  christos   asection *got2;
   7009  1.9  christos   bfd_vma *local_got_offsets;
   7010  1.9  christos   bfd_boolean ret = TRUE;
   7011  1.9  christos   bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
   7012  1.9  christos   bfd_boolean is_vxworks_tls;
   7013  1.9  christos   unsigned int picfixup_size = 0;
   7014  1.1  christos   struct ppc_elf_relax_info *relax_info = NULL;
   7015  1.1  christos 
   7016  1.1  christos #ifdef DEBUG
   7017  1.1  christos   _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
   7018  1.1  christos 		      "%ld relocations%s",
   7019  1.1  christos 		      input_bfd, input_section,
   7020  1.1  christos 		      (long) input_section->reloc_count,
   7021  1.1  christos 		      (bfd_link_relocatable (info)) ? " (relocatable)" : "");
   7022  1.1  christos #endif
   7023  1.1  christos 
   7024  1.1  christos   if (!is_ppc_elf (input_bfd))
   7025  1.1  christos     {
   7026  1.3  christos       bfd_set_error (bfd_error_wrong_format);
   7027  1.1  christos       return FALSE;
   7028  1.1  christos     }
   7029  1.3  christos 
   7030  1.3  christos   got2 = bfd_get_section_by_name (input_bfd, ".got2");
   7031  1.3  christos 
   7032  1.1  christos   /* Initialize howto table if not already done.  */
   7033  1.3  christos   if (!ppc_elf_howto_table[R_PPC_ADDR32])
   7034  1.1  christos     ppc_elf_howto_init ();
   7035  1.1  christos 
   7036  1.1  christos   htab = ppc_elf_hash_table (info);
   7037  1.1  christos   local_got_offsets = elf_local_got_offsets (input_bfd);
   7038  1.1  christos   symtab_hdr = &elf_symtab_hdr (input_bfd);
   7039  1.1  christos   sym_hashes = elf_sym_hashes (input_bfd);
   7040  1.1  christos   /* We have to handle relocations in vxworks .tls_vars sections
   7041  1.1  christos      specially, because the dynamic loader is 'weird'.  */
   7042  1.1  christos   is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
   7043  1.1  christos 		    && !strcmp (input_section->output_section->name,
   7044  1.1  christos 				".tls_vars"));
   7045  1.1  christos   if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
   7046  1.7  christos     relax_info = elf_section_data (input_section)->sec_info;
   7047  1.1  christos   rel = wrel = relocs;
   7048  1.1  christos   relend = relocs + input_section->reloc_count;
   7049  1.7  christos   for (; rel < relend; wrel++, rel++)
   7050  1.3  christos     {
   7051  1.1  christos       enum elf_ppc_reloc_type r_type;
   7052  1.3  christos       bfd_vma addend;
   7053  1.1  christos       bfd_reloc_status_type r;
   7054  1.1  christos       Elf_Internal_Sym *sym;
   7055  1.1  christos       asection *sec;
   7056  1.1  christos       struct elf_link_hash_entry *h;
   7057  1.1  christos       const char *sym_name;
   7058  1.1  christos       reloc_howto_type *howto;
   7059  1.1  christos       unsigned long r_symndx;
   7060  1.1  christos       bfd_vma relocation;
   7061  1.1  christos       bfd_vma branch_bit, from;
   7062  1.1  christos       bfd_boolean unresolved_reloc, save_unresolved_reloc;
   7063  1.1  christos       bfd_boolean warned;
   7064  1.1  christos       unsigned int tls_type, tls_mask, tls_gd;
   7065  1.1  christos       struct plt_entry **ifunc, **plt_list;
   7066  1.1  christos       struct reloc_howto_struct alt_howto;
   7067  1.1  christos 
   7068  1.1  christos     again:
   7069  1.1  christos       r_type = ELF32_R_TYPE (rel->r_info);
   7070  1.1  christos       sym = NULL;
   7071  1.3  christos       sec = NULL;
   7072  1.3  christos       h = NULL;
   7073  1.1  christos       unresolved_reloc = FALSE;
   7074  1.1  christos       warned = FALSE;
   7075  1.1  christos       r_symndx = ELF32_R_SYM (rel->r_info);
   7076  1.3  christos 
   7077  1.1  christos       if (r_symndx < symtab_hdr->sh_info)
   7078  1.1  christos 	{
   7079  1.1  christos 	  sym = local_syms + r_symndx;
   7080  1.1  christos 	  sec = local_sections[r_symndx];
   7081  1.1  christos 	  sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
   7082  1.1  christos 
   7083  1.1  christos 	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
   7084  1.1  christos 	}
   7085  1.1  christos       else
   7086  1.1  christos 	{
   7087  1.1  christos 	  bfd_boolean ignored;
   7088  1.1  christos 
   7089  1.3  christos 	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
   7090  1.3  christos 				   r_symndx, symtab_hdr, sym_hashes,
   7091  1.9  christos 				   h, sec, relocation,
   7092  1.3  christos 				   unresolved_reloc, warned, ignored);
   7093  1.3  christos 
   7094  1.3  christos 	  sym_name = h->root.root.string;
   7095  1.3  christos 	}
   7096  1.3  christos 
   7097  1.7  christos       if (sec != NULL && discarded_section (sec))
   7098  1.3  christos 	{
   7099  1.3  christos 	  /* For relocs against symbols from removed linkonce sections,
   7100  1.3  christos 	     or sections discarded by a linker script, we just want the
   7101  1.3  christos 	     section contents zeroed.  Avoid any special processing.  */
   7102  1.3  christos 	  howto = NULL;
   7103  1.3  christos 	  if (r_type < R_PPC_max)
   7104  1.3  christos 	    howto = ppc_elf_howto_table[r_type];
   7105  1.1  christos 
   7106  1.1  christos 	  _bfd_clear_contents (howto, input_bfd, input_section,
   7107  1.3  christos 			       contents, rel->r_offset);
   7108  1.1  christos 	  wrel->r_offset = rel->r_offset;
   7109  1.1  christos 	  wrel->r_info = 0;
   7110  1.1  christos 	  wrel->r_addend = 0;
   7111  1.1  christos 
   7112  1.1  christos 	  /* For ld -r, remove relocations in debug sections against
   7113  1.1  christos 	     symbols defined in discarded sections.  Not done for
   7114  1.1  christos 	     non-debug to preserve relocs in .eh_frame which the
   7115  1.1  christos 	     eh_frame editing code expects to be present.  */
   7116  1.1  christos 	  if (bfd_link_relocatable (info)
   7117  1.3  christos 	      && (input_section->flags & SEC_DEBUGGING))
   7118  1.3  christos 	    wrel--;
   7119  1.3  christos 
   7120  1.3  christos 	  continue;
   7121  1.1  christos 	}
   7122  1.1  christos 
   7123  1.1  christos       if (bfd_link_relocatable (info))
   7124  1.1  christos 	{
   7125  1.1  christos 	  if (got2 != NULL
   7126  1.1  christos 	      && r_type == R_PPC_PLTREL24
   7127  1.1  christos 	      && rel->r_addend != 0)
   7128  1.1  christos 	    {
   7129  1.1  christos 	      /* R_PPC_PLTREL24 is rather special.  If non-zero, the
   7130  1.1  christos 		 addend specifies the GOT pointer offset within .got2.  */
   7131  1.1  christos 	      rel->r_addend += got2->output_offset;
   7132  1.1  christos 	    }
   7133  1.1  christos 	  if (r_type != R_PPC_RELAX_PLT
   7134  1.1  christos 	      && r_type != R_PPC_RELAX_PLTREL24
   7135  1.1  christos 	      && r_type != R_PPC_RELAX)
   7136  1.1  christos 	    goto copy_reloc;
   7137  1.1  christos 	}
   7138  1.1  christos 
   7139  1.1  christos       /* TLS optimizations.  Replace instruction sequences and relocs
   7140  1.1  christos 	 based on information we collected in tls_optimize.  We edit
   7141  1.1  christos 	 RELOCS so that --emit-relocs will output something sensible
   7142  1.1  christos 	 for the final instruction stream.  */
   7143  1.1  christos       tls_mask = 0;
   7144  1.1  christos       tls_gd = 0;
   7145  1.1  christos       if (h != NULL)
   7146  1.1  christos 	tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
   7147  1.1  christos       else if (local_got_offsets != NULL)
   7148  1.1  christos 	{
   7149  1.1  christos 	  struct plt_entry **local_plt;
   7150  1.1  christos 	  char *lgot_masks;
   7151  1.1  christos 	  local_plt
   7152  1.1  christos 	    = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
   7153  1.1  christos 	  lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
   7154  1.1  christos 	  tls_mask = lgot_masks[r_symndx];
   7155  1.1  christos 	}
   7156  1.1  christos 
   7157  1.1  christos       /* Ensure reloc mapping code below stays sane.  */
   7158  1.1  christos       if ((R_PPC_GOT_TLSLD16 & 3)    != (R_PPC_GOT_TLSGD16 & 3)
   7159  1.1  christos 	  || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
   7160  1.1  christos 	  || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
   7161  1.1  christos 	  || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
   7162  1.1  christos 	  || (R_PPC_GOT_TLSLD16 & 3)    != (R_PPC_GOT_TPREL16 & 3)
   7163  1.7  christos 	  || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
   7164  1.3  christos 	  || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
   7165  1.1  christos 	  || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
   7166  1.1  christos 	abort ();
   7167  1.7  christos       switch (r_type)
   7168  1.3  christos 	{
   7169  1.1  christos 	default:
   7170  1.1  christos 	  break;
   7171  1.1  christos 
   7172  1.1  christos 	case R_PPC_GOT_TPREL16:
   7173  1.1  christos 	case R_PPC_GOT_TPREL16_LO:
   7174  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0
   7175  1.1  christos 	      && (tls_mask & TLS_TPREL) == 0)
   7176  1.1  christos 	    {
   7177  1.1  christos 	      bfd_vma insn;
   7178  1.1  christos 
   7179  1.1  christos 	      insn = bfd_get_32 (input_bfd,
   7180  1.7  christos 				 contents + rel->r_offset - d_offset);
   7181  1.1  christos 	      insn &= 31 << 21;
   7182  1.1  christos 	      insn |= 0x3c020000;	/* addis 0,2,0 */
   7183  1.1  christos 	      bfd_put_32 (input_bfd, insn,
   7184  1.7  christos 			  contents + rel->r_offset - d_offset);
   7185  1.1  christos 	      r_type = R_PPC_TPREL16_HA;
   7186  1.1  christos 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7187  1.1  christos 	    }
   7188  1.1  christos 	  break;
   7189  1.1  christos 
   7190  1.1  christos 	case R_PPC_TLS:
   7191  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0
   7192  1.1  christos 	      && (tls_mask & TLS_TPREL) == 0)
   7193  1.1  christos 	    {
   7194  1.1  christos 	      bfd_vma insn;
   7195  1.1  christos 
   7196  1.9  christos 	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   7197  1.1  christos 	      insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
   7198  1.1  christos 	      if (insn == 0)
   7199  1.1  christos 		abort ();
   7200  1.1  christos 	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   7201  1.1  christos 	      r_type = R_PPC_TPREL16_LO;
   7202  1.1  christos 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7203  1.1  christos 
   7204  1.1  christos 	      /* Was PPC_TLS which sits on insn boundary, now
   7205  1.1  christos 		 PPC_TPREL16_LO which is at low-order half-word.  */
   7206  1.1  christos 	      rel->r_offset += d_offset;
   7207  1.1  christos 	    }
   7208  1.1  christos 	  break;
   7209  1.1  christos 
   7210  1.1  christos 	case R_PPC_GOT_TLSGD16_HI:
   7211  1.3  christos 	case R_PPC_GOT_TLSGD16_HA:
   7212  1.7  christos 	  tls_gd = TLS_GDIE;
   7213  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
   7214  1.1  christos 	    goto tls_gdld_hi;
   7215  1.1  christos 	  break;
   7216  1.1  christos 
   7217  1.1  christos 	case R_PPC_GOT_TLSLD16_HI:
   7218  1.1  christos 	case R_PPC_GOT_TLSLD16_HA:
   7219  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
   7220  1.1  christos 	    {
   7221  1.9  christos 	    tls_gdld_hi:
   7222  1.1  christos 	      if ((tls_mask & tls_gd) != 0)
   7223  1.1  christos 		r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
   7224  1.1  christos 			  + R_PPC_GOT_TPREL16);
   7225  1.1  christos 	      else
   7226  1.1  christos 		{
   7227  1.1  christos 		  rel->r_offset -= d_offset;
   7228  1.1  christos 		  bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
   7229  1.1  christos 		  r_type = R_PPC_NONE;
   7230  1.1  christos 		}
   7231  1.1  christos 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7232  1.1  christos 	    }
   7233  1.1  christos 	  break;
   7234  1.1  christos 
   7235  1.1  christos 	case R_PPC_GOT_TLSGD16:
   7236  1.1  christos 	case R_PPC_GOT_TLSGD16_LO:
   7237  1.1  christos 	  tls_gd = TLS_GDIE;
   7238  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
   7239  1.1  christos 	    goto tls_ldgd_opt;
   7240  1.9  christos 	  break;
   7241  1.1  christos 
   7242  1.1  christos 	case R_PPC_GOT_TLSLD16:
   7243  1.1  christos 	case R_PPC_GOT_TLSLD16_LO:
   7244  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
   7245  1.3  christos 	    {
   7246  1.3  christos 	      unsigned int insn1, insn2;
   7247  1.3  christos 	      bfd_vma offset;
   7248  1.3  christos 
   7249  1.7  christos 	    tls_ldgd_opt:
   7250  1.3  christos 	      offset = (bfd_vma) -1;
   7251  1.1  christos 	      /* If not using the newer R_PPC_TLSGD/LD to mark
   7252  1.1  christos 		 __tls_get_addr calls, we must trust that the call
   7253  1.1  christos 		 stays with its arg setup insns, ie. that the next
   7254  1.3  christos 		 reloc is the __tls_get_addr call associated with
   7255  1.9  christos 		 the current reloc.  Edit both insns.  */
   7256  1.1  christos 	      if (input_section->nomark_tls_get_addr
   7257  1.1  christos 		  && rel + 1 < relend
   7258  1.1  christos 		  && branch_reloc_hash_match (input_bfd, rel + 1,
   7259  1.1  christos 					      htab->tls_get_addr))
   7260  1.7  christos 		offset = rel[1].r_offset;
   7261  1.1  christos 	      /* We read the low GOT_TLS insn because we need to keep
   7262  1.1  christos 		 the destination reg.  It may be something other than
   7263  1.1  christos 		 the usual r3, and moved to r3 before the call by
   7264  1.1  christos 		 intervening code.  */
   7265  1.1  christos 	      insn1 = bfd_get_32 (input_bfd,
   7266  1.1  christos 				  contents + rel->r_offset - d_offset);
   7267  1.1  christos 	      if ((tls_mask & tls_gd) != 0)
   7268  1.1  christos 		{
   7269  1.3  christos 		  /* IE */
   7270  1.3  christos 		  insn1 &= (0x1f << 21) | (0x1f << 16);
   7271  1.1  christos 		  insn1 |= 32u << 26;	/* lwz */
   7272  1.1  christos 		  if (offset != (bfd_vma) -1)
   7273  1.1  christos 		    {
   7274  1.1  christos 		      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7275  1.1  christos 		      insn2 = 0x7c631214;	/* add 3,3,2 */
   7276  1.1  christos 		      bfd_put_32 (input_bfd, insn2, contents + offset);
   7277  1.1  christos 		    }
   7278  1.1  christos 		  r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
   7279  1.1  christos 			    + R_PPC_GOT_TPREL16);
   7280  1.1  christos 		  rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7281  1.1  christos 		}
   7282  1.1  christos 	      else
   7283  1.1  christos 		{
   7284  1.1  christos 		  /* LE */
   7285  1.1  christos 		  insn1 &= 0x1f << 21;
   7286  1.1  christos 		  insn1 |= 0x3c020000;	/* addis r,2,0 */
   7287  1.1  christos 		  if (tls_gd == 0)
   7288  1.1  christos 		    {
   7289  1.1  christos 		      /* Was an LD reloc.  */
   7290  1.1  christos 		      for (r_symndx = 0;
   7291  1.1  christos 			   r_symndx < symtab_hdr->sh_info;
   7292  1.1  christos 			   r_symndx++)
   7293  1.1  christos 			if (local_sections[r_symndx] == sec)
   7294  1.1  christos 			  break;
   7295  1.7  christos 		      if (r_symndx >= symtab_hdr->sh_info)
   7296  1.1  christos 			r_symndx = STN_UNDEF;
   7297  1.1  christos 		      rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
   7298  1.7  christos 		      if (r_symndx != STN_UNDEF)
   7299  1.1  christos 			rel->r_addend -= (local_syms[r_symndx].st_value
   7300  1.1  christos 					  + sec->output_offset
   7301  1.1  christos 					  + sec->output_section->vma);
   7302  1.1  christos 		    }
   7303  1.1  christos 		  r_type = R_PPC_TPREL16_HA;
   7304  1.3  christos 		  rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7305  1.1  christos 		  if (offset != (bfd_vma) -1)
   7306  1.1  christos 		    {
   7307  1.1  christos 		      rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
   7308  1.1  christos 		      rel[1].r_offset = offset + d_offset;
   7309  1.1  christos 		      rel[1].r_addend = rel->r_addend;
   7310  1.7  christos 		      insn2 = 0x38630000;	/* addi 3,3,0 */
   7311  1.7  christos 		      bfd_put_32 (input_bfd, insn2, contents + offset);
   7312  1.1  christos 		    }
   7313  1.1  christos 		}
   7314  1.1  christos 	      bfd_put_32 (input_bfd, insn1,
   7315  1.1  christos 			  contents + rel->r_offset - d_offset);
   7316  1.7  christos 	      if (tls_gd == 0)
   7317  1.7  christos 		{
   7318  1.7  christos 		  /* We changed the symbol on an LD reloc.  Start over
   7319  1.7  christos 		     in order to get h, sym, sec etc. right.  */
   7320  1.7  christos 		  goto again;
   7321  1.7  christos 		}
   7322  1.7  christos 	    }
   7323  1.9  christos 	  break;
   7324  1.1  christos 
   7325  1.1  christos 	case R_PPC_TLSGD:
   7326  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
   7327  1.1  christos 	      && rel + 1 < relend)
   7328  1.1  christos 	    {
   7329  1.1  christos 	      unsigned int insn2;
   7330  1.1  christos 	      bfd_vma offset = rel->r_offset;
   7331  1.1  christos 
   7332  1.1  christos 	      if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   7333  1.1  christos 		{
   7334  1.1  christos 		  bfd_put_32 (input_bfd, NOP, contents + offset);
   7335  1.1  christos 		  rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7336  1.1  christos 		  break;
   7337  1.7  christos 		}
   7338  1.1  christos 
   7339  1.1  christos 	      if ((tls_mask & TLS_GDIE) != 0)
   7340  1.1  christos 		{
   7341  1.1  christos 		  /* IE */
   7342  1.1  christos 		  r_type = R_PPC_NONE;
   7343  1.1  christos 		  insn2 = 0x7c631214;	/* add 3,3,2 */
   7344  1.1  christos 		}
   7345  1.7  christos 	      else
   7346  1.7  christos 		{
   7347  1.1  christos 		  /* LE */
   7348  1.1  christos 		  r_type = R_PPC_TPREL16_LO;
   7349  1.1  christos 		  rel->r_offset += d_offset;
   7350  1.7  christos 		  insn2 = 0x38630000;	/* addi 3,3,0 */
   7351  1.7  christos 		}
   7352  1.7  christos 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7353  1.7  christos 	      bfd_put_32 (input_bfd, insn2, contents + offset);
   7354  1.7  christos 	      /* Zap the reloc on the _tls_get_addr call too.  */
   7355  1.7  christos 	      BFD_ASSERT (offset == rel[1].r_offset);
   7356  1.7  christos 	      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7357  1.1  christos 	    }
   7358  1.1  christos 	  break;
   7359  1.1  christos 
   7360  1.1  christos 	case R_PPC_TLSLD:
   7361  1.1  christos 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
   7362  1.1  christos 	      && rel + 1 < relend)
   7363  1.1  christos 	    {
   7364  1.1  christos 	      unsigned int insn2;
   7365  1.1  christos 
   7366  1.1  christos 	      if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   7367  1.1  christos 		{
   7368  1.1  christos 		  bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
   7369  1.1  christos 		  rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7370  1.1  christos 		  break;
   7371  1.1  christos 		}
   7372  1.1  christos 
   7373  1.7  christos 	      for (r_symndx = 0;
   7374  1.1  christos 		   r_symndx < symtab_hdr->sh_info;
   7375  1.1  christos 		   r_symndx++)
   7376  1.1  christos 		if (local_sections[r_symndx] == sec)
   7377  1.1  christos 		  break;
   7378  1.3  christos 	      if (r_symndx >= symtab_hdr->sh_info)
   7379  1.1  christos 		r_symndx = STN_UNDEF;
   7380  1.1  christos 	      rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
   7381  1.1  christos 	      if (r_symndx != STN_UNDEF)
   7382  1.1  christos 		rel->r_addend -= (local_syms[r_symndx].st_value
   7383  1.1  christos 				  + sec->output_offset
   7384  1.1  christos 				  + sec->output_section->vma);
   7385  1.1  christos 
   7386  1.1  christos 	      rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
   7387  1.1  christos 	      rel->r_offset += d_offset;
   7388  1.1  christos 	      insn2 = 0x38630000;	/* addi 3,3,0 */
   7389  1.1  christos 	      bfd_put_32 (input_bfd, insn2,
   7390  1.1  christos 			  contents + rel->r_offset - d_offset);
   7391  1.1  christos 	      /* Zap the reloc on the _tls_get_addr call too.  */
   7392  1.1  christos 	      BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
   7393  1.1  christos 	      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7394  1.7  christos 	      goto again;
   7395  1.1  christos 	    }
   7396  1.1  christos 	  break;
   7397  1.1  christos 	}
   7398  1.1  christos 
   7399  1.1  christos       /* Handle other relocations that tweak non-addend part of insn.  */
   7400  1.7  christos       branch_bit = 0;
   7401  1.1  christos       switch (r_type)
   7402  1.7  christos 	{
   7403  1.1  christos 	default:
   7404  1.1  christos 	  break;
   7405  1.1  christos 
   7406  1.1  christos 	  /* Branch taken prediction relocations.  */
   7407  1.1  christos 	case R_PPC_ADDR14_BRTAKEN:
   7408  1.1  christos 	case R_PPC_REL14_BRTAKEN:
   7409  1.1  christos 	  branch_bit = BRANCH_PREDICT_BIT;
   7410  1.1  christos 	  /* Fall through.  */
   7411  1.1  christos 
   7412  1.1  christos 	  /* Branch not taken prediction relocations.  */
   7413  1.1  christos 	case R_PPC_ADDR14_BRNTAKEN:
   7414  1.7  christos 	case R_PPC_REL14_BRNTAKEN:
   7415  1.7  christos 	  {
   7416  1.7  christos 	    unsigned int insn;
   7417  1.7  christos 
   7418  1.7  christos 	    insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   7419  1.7  christos 	    insn &= ~BRANCH_PREDICT_BIT;
   7420  1.7  christos 	    insn |= branch_bit;
   7421  1.7  christos 
   7422  1.7  christos 	    from = (rel->r_offset
   7423  1.7  christos 		    + input_section->output_offset
   7424  1.9  christos 		    + input_section->output_section->vma);
   7425  1.7  christos 
   7426  1.7  christos 	    /* Invert 'y' bit if not the default.  */
   7427  1.7  christos 	    if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
   7428  1.7  christos 	      insn ^= BRANCH_PREDICT_BIT;
   7429  1.7  christos 
   7430  1.7  christos 	    bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   7431  1.7  christos 	  }
   7432  1.7  christos 	  break;
   7433  1.7  christos 
   7434  1.7  christos 	case R_PPC_PLT16_HA:
   7435  1.7  christos 	  {
   7436  1.7  christos 	    unsigned int insn;
   7437  1.7  christos 
   7438  1.7  christos 	    insn = bfd_get_32 (input_bfd,
   7439  1.7  christos 			       contents + rel->r_offset - d_offset);
   7440  1.1  christos 	    if ((insn & (0x3fu << 26)) == 15u << 26
   7441  1.7  christos 		&& (insn & (0x1f << 16)) != 0)
   7442  1.1  christos 	      {
   7443  1.1  christos 		if (!bfd_link_pic (info))
   7444  1.3  christos 		  {
   7445  1.3  christos 		    /* Convert addis to lis.  */
   7446  1.3  christos 		    insn &= ~(0x1f << 16);
   7447  1.3  christos 		    bfd_put_32 (input_bfd, insn,
   7448  1.3  christos 				contents + rel->r_offset - d_offset);
   7449  1.3  christos 		  }
   7450  1.3  christos 	      }
   7451  1.3  christos 	    else if (bfd_link_pic (info))
   7452  1.3  christos 	      info->callbacks->einfo
   7453  1.3  christos 		(_("%P: %H: error: %s with unexpected instruction %x\n"),
   7454  1.3  christos 		 input_bfd, input_section, rel->r_offset,
   7455  1.3  christos 		 "R_PPC_PLT16_HA", insn);
   7456  1.3  christos 	  }
   7457  1.3  christos 	  break;
   7458  1.7  christos 	}
   7459  1.3  christos 
   7460  1.9  christos       if (ELIMINATE_COPY_RELOCS
   7461  1.3  christos 	  && h != NULL
   7462  1.3  christos 	  && !h->def_regular
   7463  1.3  christos 	  && h->protected_def
   7464  1.3  christos 	  && ppc_elf_hash_entry (h)->has_addr16_ha
   7465  1.3  christos 	  && ppc_elf_hash_entry (h)->has_addr16_lo
   7466  1.3  christos 	  && htab->params->pic_fixup > 0)
   7467  1.3  christos 	{
   7468  1.3  christos 	  /* Convert lis;addi or lis;load/store accessing a protected
   7469  1.3  christos 	     variable defined in a shared library to PIC.  */
   7470  1.3  christos 	  unsigned int insn;
   7471  1.3  christos 
   7472  1.3  christos 	  if (r_type == R_PPC_ADDR16_HA)
   7473  1.3  christos 	    {
   7474  1.7  christos 	      insn = bfd_get_32 (input_bfd,
   7475  1.3  christos 				 contents + rel->r_offset - d_offset);
   7476  1.3  christos 	      if ((insn & (0x3fu << 26)) == (15u << 26)
   7477  1.7  christos 		  && (insn & (0x1f << 16)) == 0 /* lis */)
   7478  1.3  christos 		{
   7479  1.7  christos 		  bfd_byte *p;
   7480  1.7  christos 		  bfd_vma off;
   7481  1.3  christos 		  bfd_vma got_addr;
   7482  1.3  christos 
   7483  1.3  christos 		  p = (contents + input_section->size
   7484  1.3  christos 		       - relax_info->workaround_size
   7485  1.3  christos 		       - relax_info->picfixup_size
   7486  1.7  christos 		       + picfixup_size);
   7487  1.7  christos 		  off = (p - contents) - (rel->r_offset - d_offset);
   7488  1.3  christos 		  if (off > 0x1fffffc || (off & 3) != 0)
   7489  1.3  christos 		    info->callbacks->einfo
   7490  1.3  christos 		      (_("%H: fixup branch overflow\n"),
   7491  1.3  christos 		       input_bfd, input_section, rel->r_offset);
   7492  1.3  christos 
   7493  1.3  christos 		  bfd_put_32 (input_bfd, B | off,
   7494  1.7  christos 			      contents + rel->r_offset - d_offset);
   7495  1.3  christos 		  got_addr = (htab->elf.sgot->output_section->vma
   7496  1.7  christos 			      + htab->elf.sgot->output_offset
   7497  1.3  christos 			      + (h->got.offset & ~1));
   7498  1.3  christos 		  wrel->r_offset = (p - contents) + d_offset;
   7499  1.3  christos 		  wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
   7500  1.3  christos 		  wrel->r_addend = got_addr;
   7501  1.3  christos 		  insn &= ~0xffff;
   7502  1.3  christos 		  insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
   7503  1.3  christos 		  bfd_put_32 (input_bfd, insn, p);
   7504  1.3  christos 
   7505  1.3  christos 		  /* Convert lis to lwz, loading address from GOT.  */
   7506  1.3  christos 		  insn &= ~0xffff;
   7507  1.3  christos 		  insn ^= (32u ^ 15u) << 26;
   7508  1.3  christos 		  insn |= (insn & (0x1f << 21)) >> 5;
   7509  1.3  christos 		  insn |= got_addr & 0xffff;
   7510  1.3  christos 		  bfd_put_32 (input_bfd, insn, p + 4);
   7511  1.3  christos 
   7512  1.7  christos 		  bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
   7513  1.7  christos 		  picfixup_size += 12;
   7514  1.7  christos 
   7515  1.7  christos 		  /* Use one of the spare relocs, so --emit-relocs
   7516  1.7  christos 		     output is reasonable.  */
   7517  1.3  christos 		  memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
   7518  1.3  christos 		  wrel++, rel++;
   7519  1.3  christos 		  rel->r_offset = wrel[-1].r_offset + 4;
   7520  1.3  christos 		  rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
   7521  1.7  christos 		  rel->r_addend = wrel[-1].r_addend;
   7522  1.3  christos 
   7523  1.9  christos 		  /* Continue on as if we had a got reloc, to output
   7524  1.9  christos 		     dynamic reloc.  */
   7525  1.9  christos 		  r_type = R_PPC_GOT16_LO;
   7526  1.9  christos 		}
   7527  1.9  christos 	      else
   7528  1.9  christos 		_bfd_error_handler
   7529  1.9  christos 		  /* xgettext:c-format */
   7530  1.9  christos 		  (_("%pB(%pA+%#" PRIx64 "): error: "
   7531  1.9  christos 		     "%s with unexpected instruction %#x"),
   7532  1.9  christos 		   input_bfd, input_section, (uint64_t) rel->r_offset,
   7533  1.9  christos 		   "R_PPC_ADDR16_HA", insn);
   7534  1.9  christos 	    }
   7535  1.9  christos 	  else if (r_type == R_PPC_ADDR16_LO)
   7536  1.9  christos 	    {
   7537  1.9  christos 	      insn = bfd_get_32 (input_bfd,
   7538  1.3  christos 				 contents + rel->r_offset - d_offset);
   7539  1.9  christos 	      if ((insn & (0x3fu << 26)) == 14u << 26    /* addi */
   7540  1.3  christos 		  || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */
   7541  1.3  christos 		  || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */
   7542  1.3  christos 		  || (insn & (0x3fu << 26)) == 36u << 26 /* stw */
   7543  1.3  christos 		  || (insn & (0x3fu << 26)) == 38u << 26 /* stb */
   7544  1.3  christos 		  || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */
   7545  1.3  christos 		  || (insn & (0x3fu << 26)) == 42u << 26 /* lha */
   7546  1.3  christos 		  || (insn & (0x3fu << 26)) == 44u << 26 /* sth */
   7547  1.3  christos 		  || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */
   7548  1.7  christos 		  || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */
   7549  1.7  christos 		  || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */
   7550  1.7  christos 		  || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */
   7551  1.7  christos 		  || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */
   7552  1.7  christos 		  || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */
   7553  1.3  christos 		  || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */
   7554  1.3  christos 		      && (insn & 3) != 1)
   7555  1.3  christos 		  || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */
   7556  1.3  christos 		      && ((insn & 3) == 0 || (insn & 3) == 3)))
   7557  1.1  christos 		{
   7558  1.1  christos 		  /* Arrange to apply the reloc addend, if any.  */
   7559  1.1  christos 		  relocation = 0;
   7560  1.1  christos 		  unresolved_reloc = FALSE;
   7561  1.1  christos 		  rel->r_info = ELF32_R_INFO (0, r_type);
   7562  1.1  christos 		}
   7563  1.1  christos 	      else
   7564  1.1  christos 		_bfd_error_handler
   7565  1.1  christos 		  /* xgettext:c-format */
   7566  1.1  christos 		  (_("%pB(%pA+%#" PRIx64 "): error: "
   7567  1.1  christos 		     "%s with unexpected instruction %#x"),
   7568  1.1  christos 		   input_bfd, input_section, (uint64_t) rel->r_offset,
   7569  1.1  christos 		   "R_PPC_ADDR16_LO", insn);
   7570  1.1  christos 	    }
   7571  1.1  christos 	}
   7572  1.1  christos 
   7573  1.1  christos       ifunc = NULL;
   7574  1.1  christos       if (!htab->is_vxworks)
   7575  1.1  christos 	{
   7576  1.1  christos 	  struct plt_entry *ent;
   7577  1.1  christos 
   7578  1.1  christos 	  if (h != NULL)
   7579  1.3  christos 	    {
   7580  1.7  christos 	      if (h->type == STT_GNU_IFUNC)
   7581  1.7  christos 		ifunc = &h->plt.plist;
   7582  1.7  christos 	    }
   7583  1.7  christos 	  else if (local_got_offsets != NULL
   7584  1.1  christos 		   && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   7585  1.1  christos 	    {
   7586  1.7  christos 	      struct plt_entry **local_plt;
   7587  1.7  christos 
   7588  1.7  christos 	      local_plt = (struct plt_entry **) (local_got_offsets
   7589  1.7  christos 						 + symtab_hdr->sh_info);
   7590  1.7  christos 	      ifunc = local_plt + r_symndx;
   7591  1.1  christos 	    }
   7592  1.1  christos 
   7593  1.1  christos 	  ent = NULL;
   7594  1.1  christos 	  if (ifunc != NULL
   7595  1.1  christos 	      && (!bfd_link_pic (info)
   7596  1.7  christos 		  || is_branch_reloc (r_type)
   7597  1.7  christos 		  || r_type == R_PPC_PLT16_LO
   7598  1.7  christos 		  || r_type == R_PPC_PLT16_HI
   7599  1.7  christos 		  || r_type == R_PPC_PLT16_HA))
   7600  1.7  christos 	    {
   7601  1.7  christos 	      addend = 0;
   7602  1.1  christos 	      if (bfd_link_pic (info)
   7603  1.7  christos 		  && (r_type == R_PPC_PLTREL24
   7604  1.7  christos 		      || r_type == R_PPC_PLT16_LO
   7605  1.7  christos 		      || r_type == R_PPC_PLT16_HI
   7606  1.7  christos 		      || r_type == R_PPC_PLT16_HA))
   7607  1.7  christos 		addend = rel->r_addend;
   7608  1.7  christos 	      ent = find_plt_ent (ifunc, got2, addend);
   7609  1.7  christos 	    }
   7610  1.7  christos 	  if (ent != NULL)
   7611  1.7  christos 	    {
   7612  1.7  christos 	      if (bfd_link_pic (info)
   7613  1.7  christos 		  && ent->sec != got2
   7614  1.7  christos 		  && htab->plt_type != PLT_NEW
   7615  1.7  christos 		  && (!htab->elf.dynamic_sections_created
   7616  1.1  christos 		      || h == NULL
   7617  1.1  christos 		      || h->dynindx == -1))
   7618  1.1  christos 		{
   7619  1.1  christos 		  /* Uh oh, we are going to create a pic glink stub
   7620  1.1  christos 		     for an ifunc (here for h == NULL and later in
   7621  1.3  christos 		     finish_dynamic_symbol for h != NULL), and
   7622  1.3  christos 		     apparently are using code compiled with
   7623  1.1  christos 		     -mbss-plt.  The difficulty is that -mbss-plt code
   7624  1.1  christos 		     gives no indication via a magic PLTREL24 addend
   7625  1.1  christos 		     whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
   7626  1.1  christos 		     is pointing into a .got2 section (and how far
   7627  1.7  christos 		     into .got2).  */
   7628  1.7  christos 		    info->callbacks->einfo
   7629  1.1  christos 		      /* xgettext:c-format */
   7630  1.1  christos 		      (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
   7631  1.1  christos 		       input_bfd, input_section, rel->r_offset, sym_name);
   7632  1.1  christos 		}
   7633  1.1  christos 
   7634  1.7  christos 	      unresolved_reloc = FALSE;
   7635  1.1  christos 	      if (htab->plt_type == PLT_NEW
   7636  1.1  christos 		  || !htab->elf.dynamic_sections_created
   7637  1.1  christos 		  || h == NULL
   7638  1.7  christos 		  || h->dynindx == -1)
   7639  1.7  christos 		relocation = (htab->glink->output_section->vma
   7640  1.7  christos 			      + htab->glink->output_offset
   7641  1.7  christos 			      + (ent->glink_offset & ~1));
   7642  1.7  christos 	      else
   7643  1.7  christos 		relocation = (htab->elf.splt->output_section->vma
   7644  1.7  christos 			      + htab->elf.splt->output_offset
   7645  1.7  christos 			      + ent->plt.offset);
   7646  1.7  christos 	    }
   7647  1.7  christos 	}
   7648  1.7  christos 
   7649  1.9  christos       addend = rel->r_addend;
   7650  1.7  christos       save_unresolved_reloc = unresolved_reloc;
   7651  1.7  christos       howto = NULL;
   7652  1.7  christos       if (r_type < R_PPC_max)
   7653  1.7  christos 	howto = ppc_elf_howto_table[r_type];
   7654  1.7  christos 
   7655  1.7  christos       switch (r_type)
   7656  1.7  christos 	{
   7657  1.7  christos 	default:
   7658  1.7  christos 	  break;
   7659  1.7  christos 
   7660  1.7  christos 	case R_PPC_TPREL16_HA:
   7661  1.7  christos 	  if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
   7662  1.7  christos 	    {
   7663  1.7  christos 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   7664  1.7  christos 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   7665  1.7  christos 	      if ((insn & ((0x3fu << 26) | 0x1f << 16))
   7666  1.7  christos 		  != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
   7667  1.7  christos 		/* xgettext:c-format */
   7668  1.7  christos 		info->callbacks->minfo
   7669  1.7  christos 		  (_("%H: warning: %s unexpected insn %#x.\n"),
   7670  1.7  christos 		   input_bfd, input_section, rel->r_offset, howto->name, insn);
   7671  1.7  christos 	      else
   7672  1.7  christos 		bfd_put_32 (input_bfd, NOP, p);
   7673  1.7  christos 	    }
   7674  1.1  christos 	  break;
   7675  1.1  christos 
   7676  1.7  christos 	case R_PPC_TPREL16_LO:
   7677  1.7  christos 	  if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
   7678  1.7  christos 	    {
   7679  1.1  christos 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   7680  1.1  christos 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   7681  1.1  christos 	      insn &= ~(0x1f << 16);
   7682  1.3  christos 	      insn |= 2 << 16;
   7683  1.1  christos 	      bfd_put_32 (input_bfd, insn, p);
   7684  1.1  christos 	    }
   7685  1.1  christos 	  break;
   7686  1.1  christos 	}
   7687  1.1  christos 
   7688  1.1  christos       tls_type = 0;
   7689  1.1  christos       switch (r_type)
   7690  1.1  christos 	{
   7691  1.3  christos 	default:
   7692  1.1  christos 	  /* xgettext:c-format */
   7693  1.1  christos 	  _bfd_error_handler (_("%pB: %s unsupported"),
   7694  1.1  christos 			      input_bfd, howto->name);
   7695  1.1  christos 
   7696  1.1  christos 	  bfd_set_error (bfd_error_bad_value);
   7697  1.1  christos 	  ret = FALSE;
   7698  1.1  christos 	  goto copy_reloc;
   7699  1.1  christos 
   7700  1.1  christos 	case R_PPC_NONE:
   7701  1.1  christos 	case R_PPC_TLS:
   7702  1.1  christos 	case R_PPC_TLSGD:
   7703  1.1  christos 	case R_PPC_TLSLD:
   7704  1.1  christos 	case R_PPC_EMB_MRKREF:
   7705  1.1  christos 	case R_PPC_GNU_VTINHERIT:
   7706  1.1  christos 	case R_PPC_GNU_VTENTRY:
   7707  1.1  christos 	  goto copy_reloc;
   7708  1.1  christos 
   7709  1.1  christos 	  /* GOT16 relocations.  Like an ADDR16 using the symbol's
   7710  1.1  christos 	     address in the GOT as relocation value instead of the
   7711  1.1  christos 	     symbol's value itself.  Also, create a GOT entry for the
   7712  1.1  christos 	     symbol and put the symbol value there.  */
   7713  1.1  christos 	case R_PPC_GOT_TLSGD16:
   7714  1.1  christos 	case R_PPC_GOT_TLSGD16_LO:
   7715  1.1  christos 	case R_PPC_GOT_TLSGD16_HI:
   7716  1.1  christos 	case R_PPC_GOT_TLSGD16_HA:
   7717  1.1  christos 	  tls_type = TLS_TLS | TLS_GD;
   7718  1.1  christos 	  goto dogot;
   7719  1.1  christos 
   7720  1.1  christos 	case R_PPC_GOT_TLSLD16:
   7721  1.1  christos 	case R_PPC_GOT_TLSLD16_LO:
   7722  1.1  christos 	case R_PPC_GOT_TLSLD16_HI:
   7723  1.1  christos 	case R_PPC_GOT_TLSLD16_HA:
   7724  1.1  christos 	  tls_type = TLS_TLS | TLS_LD;
   7725  1.1  christos 	  goto dogot;
   7726  1.1  christos 
   7727  1.1  christos 	case R_PPC_GOT_TPREL16:
   7728  1.1  christos 	case R_PPC_GOT_TPREL16_LO:
   7729  1.1  christos 	case R_PPC_GOT_TPREL16_HI:
   7730  1.1  christos 	case R_PPC_GOT_TPREL16_HA:
   7731  1.1  christos 	  tls_type = TLS_TLS | TLS_TPREL;
   7732  1.1  christos 	  goto dogot;
   7733  1.1  christos 
   7734  1.1  christos 	case R_PPC_GOT_DTPREL16:
   7735  1.1  christos 	case R_PPC_GOT_DTPREL16_LO:
   7736  1.1  christos 	case R_PPC_GOT_DTPREL16_HI:
   7737  1.1  christos 	case R_PPC_GOT_DTPREL16_HA:
   7738  1.7  christos 	  tls_type = TLS_TLS | TLS_DTPREL;
   7739  1.1  christos 	  goto dogot;
   7740  1.1  christos 
   7741  1.1  christos 	case R_PPC_GOT16:
   7742  1.1  christos 	case R_PPC_GOT16_LO:
   7743  1.9  christos 	case R_PPC_GOT16_HI:
   7744  1.1  christos 	case R_PPC_GOT16_HA:
   7745  1.1  christos 	  tls_mask = 0;
   7746  1.1  christos 	dogot:
   7747  1.7  christos 	  {
   7748  1.7  christos 	    /* Relocation is to the entry for this symbol in the global
   7749  1.7  christos 	       offset table.  */
   7750  1.7  christos 	    bfd_vma off;
   7751  1.1  christos 	    bfd_vma *offp;
   7752  1.1  christos 	    unsigned long indx;
   7753  1.1  christos 
   7754  1.1  christos 	    if (htab->elf.sgot == NULL)
   7755  1.1  christos 	      abort ();
   7756  1.1  christos 
   7757  1.1  christos 	    indx = 0;
   7758  1.1  christos 	    if (tls_type == (TLS_TLS | TLS_LD)
   7759  1.1  christos 		&& SYMBOL_REFERENCES_LOCAL (info, h))
   7760  1.1  christos 	      offp = &htab->tlsld_got.offset;
   7761  1.1  christos 	    else if (h != NULL)
   7762  1.1  christos 	      {
   7763  1.1  christos 		if (!htab->elf.dynamic_sections_created
   7764  1.1  christos 		    || h->dynindx == -1
   7765  1.1  christos 		    || SYMBOL_REFERENCES_LOCAL (info, h)
   7766  1.1  christos 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   7767  1.1  christos 		  /* This is actually a static link, or it is a
   7768  1.1  christos 		     -Bsymbolic link and the symbol is defined
   7769  1.1  christos 		     locally, or the symbol was forced to be local
   7770  1.1  christos 		     because of a version file.  */
   7771  1.1  christos 		  ;
   7772  1.1  christos 		else
   7773  1.1  christos 		  {
   7774  1.1  christos 		    indx = h->dynindx;
   7775  1.1  christos 		    unresolved_reloc = FALSE;
   7776  1.1  christos 		  }
   7777  1.1  christos 		offp = &h->got.offset;
   7778  1.7  christos 	      }
   7779  1.7  christos 	    else
   7780  1.9  christos 	      {
   7781  1.7  christos 		if (local_got_offsets == NULL)
   7782  1.1  christos 		  abort ();
   7783  1.1  christos 		offp = &local_got_offsets[r_symndx];
   7784  1.1  christos 	      }
   7785  1.9  christos 
   7786  1.9  christos 	    /* The offset must always be a multiple of 4.  We use the
   7787  1.1  christos 	       least significant bit to record whether we have already
   7788  1.1  christos 	       processed this entry.  */
   7789  1.1  christos 	    off = *offp;
   7790  1.1  christos 	    if ((off & 1) != 0)
   7791  1.1  christos 	      off &= ~1;
   7792  1.1  christos 	    else
   7793  1.1  christos 	      {
   7794  1.1  christos 		unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
   7795  1.1  christos 				      ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
   7796  1.1  christos 						    | TLS_TPREL | TLS_GDIE)
   7797  1.1  christos 				      : 0);
   7798  1.1  christos 
   7799  1.1  christos 		if (offp == &htab->tlsld_got.offset)
   7800  1.1  christos 		  tls_m = TLS_LD;
   7801  1.1  christos 		else if ((tls_m & TLS_LD) != 0
   7802  1.1  christos 			 && SYMBOL_REFERENCES_LOCAL (info, h))
   7803  1.1  christos 		  tls_m &= ~TLS_LD;
   7804  1.1  christos 
   7805  1.1  christos 		/* We might have multiple got entries for this sym.
   7806  1.1  christos 		   Initialize them all.  */
   7807  1.1  christos 		do
   7808  1.1  christos 		  {
   7809  1.1  christos 		    int tls_ty = 0;
   7810  1.9  christos 
   7811  1.1  christos 		    if ((tls_m & TLS_LD) != 0)
   7812  1.1  christos 		      {
   7813  1.1  christos 			tls_ty = TLS_TLS | TLS_LD;
   7814  1.1  christos 			tls_m &= ~TLS_LD;
   7815  1.1  christos 		      }
   7816  1.1  christos 		    else if ((tls_m & TLS_GD) != 0)
   7817  1.7  christos 		      {
   7818  1.7  christos 			tls_ty = TLS_TLS | TLS_GD;
   7819  1.7  christos 			tls_m &= ~TLS_GD;
   7820  1.9  christos 		      }
   7821  1.9  christos 		    else if ((tls_m & TLS_DTPREL) != 0)
   7822  1.7  christos 		      {
   7823  1.7  christos 			tls_ty = TLS_TLS | TLS_DTPREL;
   7824  1.1  christos 			tls_m &= ~TLS_DTPREL;
   7825  1.7  christos 		      }
   7826  1.1  christos 		    else if ((tls_m & (TLS_TPREL | TLS_GDIE)) != 0)
   7827  1.1  christos 		      {
   7828  1.3  christos 			tls_ty = TLS_TLS | TLS_TPREL;
   7829  1.7  christos 			tls_m = 0;
   7830  1.7  christos 		      }
   7831  1.7  christos 
   7832  1.7  christos 		    /* Generate relocs for the dynamic linker.  */
   7833  1.7  christos 		    if (indx != 0
   7834  1.7  christos 			|| (bfd_link_pic (info)
   7835  1.7  christos 			    && (h == NULL
   7836  1.7  christos 				|| !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   7837  1.7  christos 			    && !(tls_ty != 0
   7838  1.1  christos 				 && bfd_link_executable (info)
   7839  1.1  christos 				 && SYMBOL_REFERENCES_LOCAL (info, h))))
   7840  1.1  christos 		      {
   7841  1.1  christos 			asection *rsec = htab->elf.srelgot;
   7842  1.1  christos 			bfd_byte * loc;
   7843  1.1  christos 
   7844  1.1  christos 			if (ifunc != NULL)
   7845  1.1  christos 			  {
   7846  1.1  christos 			    rsec = htab->elf.irelplt;
   7847  1.1  christos 			    if (indx == 0)
   7848  1.1  christos 			      htab->local_ifunc_resolver = 1;
   7849  1.1  christos 			    else if (is_static_defined (h))
   7850  1.1  christos 			      htab->maybe_local_ifunc_resolver = 1;
   7851  1.1  christos 			  }
   7852  1.1  christos 			outrel.r_offset = (htab->elf.sgot->output_section->vma
   7853  1.1  christos 					   + htab->elf.sgot->output_offset
   7854  1.1  christos 					   + off);
   7855  1.1  christos 			outrel.r_addend = 0;
   7856  1.1  christos 			if (tls_ty & (TLS_LD | TLS_GD))
   7857  1.1  christos 			  {
   7858  1.1  christos 			    outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
   7859  1.1  christos 			    if (tls_ty == (TLS_TLS | TLS_GD))
   7860  1.1  christos 			      {
   7861  1.1  christos 				loc = rsec->contents;
   7862  1.1  christos 				loc += (rsec->reloc_count++
   7863  1.1  christos 					* sizeof (Elf32_External_Rela));
   7864  1.1  christos 				bfd_elf32_swap_reloca_out (output_bfd,
   7865  1.1  christos 							   &outrel, loc);
   7866  1.1  christos 				outrel.r_offset += 4;
   7867  1.1  christos 				outrel.r_info
   7868  1.1  christos 				  = ELF32_R_INFO (indx, R_PPC_DTPREL32);
   7869  1.3  christos 			      }
   7870  1.3  christos 			  }
   7871  1.3  christos 			else if (tls_ty == (TLS_TLS | TLS_DTPREL))
   7872  1.3  christos 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
   7873  1.3  christos 			else if (tls_ty == (TLS_TLS | TLS_TPREL))
   7874  1.3  christos 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
   7875  1.1  christos 			else if (indx != 0)
   7876  1.1  christos 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
   7877  1.1  christos 			else if (ifunc != NULL)
   7878  1.1  christos 			  outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   7879  1.1  christos 			else
   7880  1.1  christos 			  outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   7881  1.1  christos 			if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
   7882  1.1  christos 			  {
   7883  1.1  christos 			    outrel.r_addend += relocation;
   7884  1.1  christos 			    if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
   7885  1.1  christos 			      {
   7886  1.1  christos 				if (htab->elf.tls_sec == NULL)
   7887  1.1  christos 				  outrel.r_addend = 0;
   7888  1.7  christos 				else
   7889  1.1  christos 				  outrel.r_addend -= htab->elf.tls_sec->vma;
   7890  1.3  christos 			      }
   7891  1.3  christos 			  }
   7892  1.3  christos 			loc = rsec->contents;
   7893  1.3  christos 			loc += (rsec->reloc_count++
   7894  1.7  christos 				* sizeof (Elf32_External_Rela));
   7895  1.7  christos 			bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   7896  1.7  christos 		      }
   7897  1.7  christos 
   7898  1.7  christos 		    /* Init the .got section contents if we're not
   7899  1.3  christos 		       emitting a reloc.  */
   7900  1.3  christos 		    else
   7901  1.1  christos 		      {
   7902  1.7  christos 			bfd_vma value = relocation;
   7903  1.1  christos 
   7904  1.7  christos 			if (tls_ty != 0)
   7905  1.7  christos 			  {
   7906  1.1  christos 			    if (htab->elf.tls_sec == NULL)
   7907  1.1  christos 			      value = 0;
   7908  1.1  christos 			    else
   7909  1.7  christos 			      {
   7910  1.7  christos 				if (tls_ty & TLS_LD)
   7911  1.1  christos 				  value = 0;
   7912  1.1  christos 				else
   7913  1.1  christos 				  value -= htab->elf.tls_sec->vma + DTP_OFFSET;
   7914  1.1  christos 				if (tls_ty & TLS_TPREL)
   7915  1.1  christos 				  value += DTP_OFFSET - TP_OFFSET;
   7916  1.1  christos 			      }
   7917  1.1  christos 
   7918  1.1  christos 			    if (tls_ty & (TLS_LD | TLS_GD))
   7919  1.1  christos 			      {
   7920  1.1  christos 				bfd_put_32 (input_bfd, value,
   7921  1.1  christos 					    htab->elf.sgot->contents + off + 4);
   7922  1.1  christos 				value = 1;
   7923  1.1  christos 			      }
   7924  1.1  christos 			  }
   7925  1.1  christos 			bfd_put_32 (input_bfd, value,
   7926  1.1  christos 				    htab->elf.sgot->contents + off);
   7927  1.1  christos 		      }
   7928  1.1  christos 
   7929  1.1  christos 		    off += 4;
   7930  1.1  christos 		    if (tls_ty & (TLS_LD | TLS_GD))
   7931  1.9  christos 		      off += 4;
   7932  1.1  christos 		  }
   7933  1.1  christos 		while (tls_m != 0);
   7934  1.1  christos 
   7935  1.1  christos 		off = *offp;
   7936  1.1  christos 		*offp = off | 1;
   7937  1.1  christos 	      }
   7938  1.1  christos 
   7939  1.1  christos 	    if (off >= (bfd_vma) -2)
   7940  1.1  christos 	      abort ();
   7941  1.1  christos 
   7942  1.1  christos 	    if ((tls_type & TLS_TLS) != 0)
   7943  1.1  christos 	      {
   7944  1.1  christos 		if (tls_type != (TLS_TLS | TLS_LD))
   7945  1.1  christos 		  {
   7946  1.3  christos 		    if ((tls_mask & TLS_LD) != 0
   7947  1.3  christos 			&& !SYMBOL_REFERENCES_LOCAL (info, h))
   7948  1.3  christos 		      off += 8;
   7949  1.3  christos 		    if (tls_type != (TLS_TLS | TLS_GD))
   7950  1.7  christos 		      {
   7951  1.7  christos 			if ((tls_mask & TLS_GD) != 0)
   7952  1.1  christos 			  off += 8;
   7953  1.1  christos 			if (tls_type != (TLS_TLS | TLS_DTPREL))
   7954  1.1  christos 			  {
   7955  1.1  christos 			    if ((tls_mask & TLS_DTPREL) != 0)
   7956  1.1  christos 			      off += 4;
   7957  1.1  christos 			  }
   7958  1.1  christos 		      }
   7959  1.1  christos 		  }
   7960  1.1  christos 	      }
   7961  1.7  christos 
   7962  1.7  christos 	    /* If here for a picfixup, we're done.  */
   7963  1.1  christos 	    if (r_type != ELF32_R_TYPE (rel->r_info))
   7964  1.1  christos 	      goto copy_reloc;
   7965  1.1  christos 
   7966  1.1  christos 	    relocation = (htab->elf.sgot->output_section->vma
   7967  1.3  christos 			  + htab->elf.sgot->output_offset
   7968  1.1  christos 			  + off
   7969  1.3  christos 			  - SYM_VAL (htab->elf.hgot));
   7970  1.1  christos 
   7971  1.1  christos 	    /* Addends on got relocations don't make much sense.
   7972  1.1  christos 	       x+off@got is actually x@got+off, and since the got is
   7973  1.1  christos 	       generated by a hash table traversal, the value in the
   7974  1.1  christos 	       got at entry m+n bears little relation to the entry m.  */
   7975  1.6  christos 	    if (addend != 0)
   7976  1.6  christos 	      info->callbacks->einfo
   7977  1.6  christos 		/* xgettext:c-format */
   7978  1.6  christos 		(_("%H: non-zero addend on %s reloc against `%s'\n"),
   7979  1.6  christos 		 input_bfd, input_section, rel->r_offset,
   7980  1.6  christos 		 howto->name,
   7981  1.3  christos 		 sym_name);
   7982  1.1  christos 	  }
   7983  1.7  christos 	  break;
   7984  1.7  christos 
   7985  1.7  christos 	  /* Relocations that need no special processing.  */
   7986  1.7  christos 	case R_PPC_LOCAL24PC:
   7987  1.7  christos 	  /* It makes no sense to point a local relocation
   7988  1.7  christos 	     at a symbol not in this object.  */
   7989  1.7  christos 	  if (unresolved_reloc)
   7990  1.7  christos 	    {
   7991  1.7  christos 	      (*info->callbacks->undefined_symbol) (info,
   7992  1.7  christos 						    h->root.root.string,
   7993  1.7  christos 						    input_bfd,
   7994  1.7  christos 						    input_section,
   7995  1.7  christos 						    rel->r_offset,
   7996  1.7  christos 						    TRUE);
   7997  1.7  christos 	      goto copy_reloc;
   7998  1.1  christos 	    }
   7999  1.1  christos 	  if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
   8000  1.1  christos 	    {
   8001  1.1  christos 	      /* @local on an ifunc does not really make sense since
   8002  1.1  christos 		 the ifunc resolver can take you anywhere.  More
   8003  1.1  christos 		 seriously, calls to ifuncs must go through a plt call
   8004  1.3  christos 		 stub, and for pic the plt call stubs uses r30 to
   8005  1.3  christos 		 access the PLT.  The problem is that a call that is
   8006  1.1  christos 		 local won't have the +32k reloc addend trick marking
   8007  1.1  christos 		 -fPIC code, so the linker won't know whether r30 is
   8008  1.1  christos 		 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section.  */
   8009  1.1  christos 	      /* xgettext:c-format */
   8010  1.1  christos 	      info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
   8011  1.1  christos 				      input_bfd, input_section, rel->r_offset,
   8012  1.1  christos 				      h->root.root.string);
   8013  1.1  christos 	    }
   8014  1.1  christos 	  break;
   8015  1.1  christos 
   8016  1.1  christos 	case R_PPC_DTPREL16:
   8017  1.1  christos 	case R_PPC_DTPREL16_LO:
   8018  1.1  christos 	case R_PPC_DTPREL16_HI:
   8019  1.1  christos 	case R_PPC_DTPREL16_HA:
   8020  1.1  christos 	  if (htab->elf.tls_sec != NULL)
   8021  1.1  christos 	    addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
   8022  1.1  christos 	  break;
   8023  1.7  christos 
   8024  1.1  christos 	  /* Relocations that may need to be propagated if this is a shared
   8025  1.1  christos 	     object.  */
   8026  1.7  christos 	case R_PPC_TPREL16:
   8027  1.1  christos 	case R_PPC_TPREL16_LO:
   8028  1.1  christos 	case R_PPC_TPREL16_HI:
   8029  1.3  christos 	case R_PPC_TPREL16_HA:
   8030  1.3  christos 	  if (h != NULL
   8031  1.1  christos 	      && h->root.type == bfd_link_hash_undefweak
   8032  1.7  christos 	      && h->dynindx == -1)
   8033  1.7  christos 	    {
   8034  1.1  christos 	      /* Make this relocation against an undefined weak symbol
   8035  1.1  christos 		 resolve to zero.  This is really just a tweak, since
   8036  1.1  christos 		 code using weak externs ought to check that they are
   8037  1.3  christos 		 defined before using them.  */
   8038  1.3  christos 	      bfd_byte *p = contents + rel->r_offset - d_offset;
   8039  1.1  christos 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   8040  1.1  christos 	      insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
   8041  1.1  christos 	      if (insn != 0)
   8042  1.3  christos 		bfd_put_32 (input_bfd, insn, p);
   8043  1.3  christos 	      break;
   8044  1.1  christos 	    }
   8045  1.1  christos 	  if (htab->elf.tls_sec != NULL)
   8046  1.1  christos 	    addend -= htab->elf.tls_sec->vma + TP_OFFSET;
   8047  1.1  christos 	  /* The TPREL16 relocs shouldn't really be used in shared
   8048  1.1  christos 	     libs or with non-local symbols as that will result in
   8049  1.1  christos 	     DT_TEXTREL being set, but support them anyway.  */
   8050  1.1  christos 	  goto dodyn;
   8051  1.1  christos 
   8052  1.1  christos 	case R_PPC_TPREL32:
   8053  1.1  christos 	  if (htab->elf.tls_sec != NULL)
   8054  1.1  christos 	    addend -= htab->elf.tls_sec->vma + TP_OFFSET;
   8055  1.3  christos 	  goto dodyn;
   8056  1.1  christos 
   8057  1.1  christos 	case R_PPC_DTPREL32:
   8058  1.1  christos 	  if (htab->elf.tls_sec != NULL)
   8059  1.1  christos 	    addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
   8060  1.1  christos 	  goto dodyn;
   8061  1.1  christos 
   8062  1.1  christos 	case R_PPC_DTPMOD32:
   8063  1.1  christos 	  relocation = 1;
   8064  1.1  christos 	  addend = 0;
   8065  1.1  christos 	  goto dodyn;
   8066  1.1  christos 
   8067  1.1  christos 	case R_PPC_REL16:
   8068  1.1  christos 	case R_PPC_REL16_LO:
   8069  1.1  christos 	case R_PPC_REL16_HI:
   8070  1.1  christos 	case R_PPC_REL16_HA:
   8071  1.1  christos 	case R_PPC_REL16DX_HA:
   8072  1.1  christos 	  break;
   8073  1.1  christos 
   8074  1.1  christos 	case R_PPC_REL32:
   8075  1.1  christos 	  if (h == NULL || h == htab->elf.hgot)
   8076  1.1  christos 	    break;
   8077  1.1  christos 	  /* fall through */
   8078  1.1  christos 
   8079  1.1  christos 	case R_PPC_ADDR32:
   8080  1.1  christos 	case R_PPC_ADDR16:
   8081  1.1  christos 	case R_PPC_ADDR16_LO:
   8082  1.1  christos 	case R_PPC_ADDR16_HI:
   8083  1.1  christos 	case R_PPC_ADDR16_HA:
   8084  1.1  christos 	case R_PPC_UADDR32:
   8085  1.1  christos 	case R_PPC_UADDR16:
   8086  1.1  christos 	  goto dodyn;
   8087  1.1  christos 
   8088  1.1  christos 	case R_PPC_VLE_REL8:
   8089  1.1  christos 	case R_PPC_VLE_REL15:
   8090  1.3  christos 	case R_PPC_VLE_REL24:
   8091  1.1  christos 	case R_PPC_REL24:
   8092  1.1  christos 	case R_PPC_REL14:
   8093  1.1  christos 	case R_PPC_REL14_BRTAKEN:
   8094  1.1  christos 	case R_PPC_REL14_BRNTAKEN:
   8095  1.1  christos 	  /* If these relocations are not to a named symbol, they can be
   8096  1.1  christos 	     handled right here, no need to bother the dynamic linker.  */
   8097  1.1  christos 	  if (SYMBOL_CALLS_LOCAL (info, h)
   8098  1.1  christos 	      || h == htab->elf.hgot)
   8099  1.7  christos 	    break;
   8100  1.7  christos 	  /* fall through */
   8101  1.7  christos 
   8102  1.7  christos 	case R_PPC_ADDR24:
   8103  1.7  christos 	case R_PPC_ADDR14:
   8104  1.7  christos 	case R_PPC_ADDR14_BRTAKEN:
   8105  1.7  christos 	case R_PPC_ADDR14_BRNTAKEN:
   8106  1.1  christos 	  if (h != NULL && !bfd_link_pic (info))
   8107  1.1  christos 	    break;
   8108  1.3  christos 	  /* fall through */
   8109  1.3  christos 
   8110  1.7  christos 	dodyn:
   8111  1.7  christos 	  if ((input_section->flags & SEC_ALLOC) == 0
   8112  1.1  christos 	      || is_vxworks_tls)
   8113  1.1  christos 	    break;
   8114  1.1  christos 
   8115  1.1  christos 	  if (bfd_link_pic (info)
   8116  1.1  christos 	      ? ((h == NULL
   8117  1.1  christos 		  || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
   8118  1.1  christos 		 && ((h != NULL && pc_dynrelocs (h))
   8119  1.1  christos 		     || must_be_dyn_reloc (info, r_type)))
   8120  1.1  christos 	      : (h != NULL
   8121  1.1  christos 		 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
   8122  1.1  christos 	    {
   8123  1.1  christos 	      int skip;
   8124  1.1  christos 	      bfd_byte *loc;
   8125  1.1  christos 	      asection *sreloc;
   8126  1.1  christos 	      long indx = 0;
   8127  1.1  christos 
   8128  1.1  christos #ifdef DEBUG
   8129  1.1  christos 	      fprintf (stderr, "ppc_elf_relocate_section needs to "
   8130  1.1  christos 		       "create relocation for %s\n",
   8131  1.1  christos 		       (h && h->root.root.string
   8132  1.9  christos 			? h->root.root.string : "<unknown>"));
   8133  1.9  christos #endif
   8134  1.9  christos 
   8135  1.9  christos 	      /* When generating a shared object, these relocations
   8136  1.9  christos 		 are copied into the output file to be resolved at run
   8137  1.9  christos 		 time.  */
   8138  1.9  christos 	      skip = 0;
   8139  1.9  christos 	      outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
   8140  1.1  christos 							 input_section,
   8141  1.1  christos 							 rel->r_offset);
   8142  1.7  christos 	      if (outrel.r_offset == (bfd_vma) -1
   8143  1.1  christos 		  || outrel.r_offset == (bfd_vma) -2)
   8144  1.7  christos 		skip = (int) outrel.r_offset;
   8145  1.7  christos 	      outrel.r_offset += (input_section->output_section->vma
   8146  1.1  christos 				  + input_section->output_offset);
   8147  1.7  christos 
   8148  1.1  christos 	      /* Optimize unaligned reloc use.  */
   8149  1.1  christos 	      if ((r_type == R_PPC_ADDR32 && (outrel.r_offset & 3) != 0)
   8150  1.1  christos 		  || (r_type == R_PPC_UADDR32 && (outrel.r_offset & 3) == 0))
   8151  1.1  christos 		r_type ^= R_PPC_ADDR32 ^ R_PPC_UADDR32;
   8152  1.1  christos 	      if ((r_type == R_PPC_ADDR16 && (outrel.r_offset & 1) != 0)
   8153  1.1  christos 		  || (r_type == R_PPC_UADDR16 && (outrel.r_offset & 1) == 0))
   8154  1.1  christos 		r_type ^= R_PPC_ADDR16 ^ R_PPC_UADDR16;
   8155  1.1  christos 
   8156  1.1  christos 	      if (skip)
   8157  1.1  christos 		memset (&outrel, 0, sizeof outrel);
   8158  1.1  christos 	      else if (!SYMBOL_REFERENCES_LOCAL (info, h))
   8159  1.1  christos 		{
   8160  1.1  christos 		  indx = h->dynindx;
   8161  1.1  christos 		  BFD_ASSERT (indx != -1);
   8162  1.1  christos 		  unresolved_reloc = FALSE;
   8163  1.1  christos 		  outrel.r_info = ELF32_R_INFO (indx, r_type);
   8164  1.1  christos 		  outrel.r_addend = rel->r_addend;
   8165  1.1  christos 		}
   8166  1.1  christos 	      else
   8167  1.1  christos 		{
   8168  1.1  christos 		  outrel.r_addend = relocation + rel->r_addend;
   8169  1.1  christos 
   8170  1.1  christos 		  if (r_type != R_PPC_ADDR32)
   8171  1.7  christos 		    {
   8172  1.7  christos 		      if (ifunc != NULL)
   8173  1.1  christos 			{
   8174  1.1  christos 			  /* If we get here when building a static
   8175  1.1  christos 			     executable, then the libc startup function
   8176  1.1  christos 			     responsible for applying indirect function
   8177  1.1  christos 			     relocations is going to complain about
   8178  1.1  christos 			     the reloc type.
   8179  1.1  christos 			     If we get here when building a dynamic
   8180  1.1  christos 			     executable, it will be because we have
   8181  1.1  christos 			     a text relocation.  The dynamic loader
   8182  1.1  christos 			     will set the text segment writable and
   8183  1.1  christos 			     non-executable to apply text relocations.
   8184  1.1  christos 			     So we'll segfault when trying to run the
   8185  1.1  christos 			     indirection function to resolve the reloc.  */
   8186  1.1  christos 			  info->callbacks->einfo
   8187  1.1  christos 			    /* xgettext:c-format */
   8188  1.1  christos 			    (_("%H: relocation %s for indirect "
   8189  1.1  christos 			       "function %s unsupported\n"),
   8190  1.1  christos 			     input_bfd, input_section, rel->r_offset,
   8191  1.1  christos 			     howto->name,
   8192  1.1  christos 			     sym_name);
   8193  1.1  christos 			  ret = FALSE;
   8194  1.1  christos 			}
   8195  1.1  christos 		      else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
   8196  1.1  christos 			;
   8197  1.9  christos 		      else if (sec == NULL || sec->owner == NULL)
   8198  1.9  christos 			{
   8199  1.9  christos 			  bfd_set_error (bfd_error_bad_value);
   8200  1.9  christos 			  ret = FALSE;
   8201  1.9  christos 			}
   8202  1.9  christos 		      else
   8203  1.1  christos 			{
   8204  1.1  christos 			  asection *osec;
   8205  1.9  christos 
   8206  1.9  christos 			  /* We are turning this relocation into one
   8207  1.9  christos 			     against a section symbol.  It would be
   8208  1.9  christos 			     proper to subtract the symbol's value,
   8209  1.9  christos 			     osec->vma, from the emitted reloc addend,
   8210  1.9  christos 			     but ld.so expects buggy relocs.
   8211  1.1  christos 			     FIXME: Why not always use a zero index?  */
   8212  1.9  christos 			  osec = sec->output_section;
   8213  1.9  christos 			  if ((osec->flags & SEC_THREAD_LOCAL) != 0)
   8214  1.9  christos 			    {
   8215  1.9  christos 			      osec = htab->elf.tls_sec;
   8216  1.9  christos 			      indx = 0;
   8217  1.9  christos 			    }
   8218  1.1  christos 			  else
   8219  1.1  christos 			    {
   8220  1.1  christos 			      indx = elf_section_data (osec)->dynindx;
   8221  1.1  christos 			      if (indx == 0)
   8222  1.1  christos 				{
   8223  1.1  christos 				  osec = htab->elf.text_index_section;
   8224  1.1  christos 				  indx = elf_section_data (osec)->dynindx;
   8225  1.1  christos 				}
   8226  1.1  christos 			      BFD_ASSERT (indx != 0);
   8227  1.1  christos 			    }
   8228  1.7  christos 
   8229  1.7  christos 			  /* ld.so doesn't expect buggy TLS relocs.
   8230  1.7  christos 			     Don't leave the symbol value in the
   8231  1.7  christos 			     addend for them.  */
   8232  1.7  christos 			  if (IS_PPC_TLS_RELOC (r_type))
   8233  1.7  christos 			    outrel.r_addend -= osec->vma;
   8234  1.7  christos 			}
   8235  1.7  christos 
   8236  1.7  christos 		      outrel.r_info = ELF32_R_INFO (indx, r_type);
   8237  1.7  christos 		    }
   8238  1.7  christos 		  else if (ifunc != NULL)
   8239  1.7  christos 		    outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   8240  1.1  christos 		  else
   8241  1.1  christos 		    outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   8242  1.1  christos 		}
   8243  1.1  christos 
   8244  1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   8245  1.3  christos 	      if (ifunc)
   8246  1.1  christos 		{
   8247  1.7  christos 		  sreloc = htab->elf.irelplt;
   8248  1.7  christos 		  if (indx == 0)
   8249  1.7  christos 		    htab->local_ifunc_resolver = 1;
   8250  1.1  christos 		  else if (is_static_defined (h))
   8251  1.1  christos 		    htab->maybe_local_ifunc_resolver = 1;
   8252  1.1  christos 		}
   8253  1.1  christos 	      if (sreloc == NULL)
   8254  1.1  christos 		return FALSE;
   8255  1.1  christos 
   8256  1.1  christos 	      loc = sreloc->contents;
   8257  1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
   8258  1.1  christos 	      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   8259  1.1  christos 
   8260  1.1  christos 	      if (skip == -1)
   8261  1.1  christos 		goto copy_reloc;
   8262  1.1  christos 
   8263  1.1  christos 	      /* This reloc will be computed at runtime.  Clear the memory
   8264  1.1  christos 		 so that it contains a predictable value for prelink.  */
   8265  1.1  christos 	      if (!skip)
   8266  1.1  christos 		{
   8267  1.3  christos 		  relocation = howto->pc_relative ? outrel.r_offset : 0;
   8268  1.1  christos 		  addend = 0;
   8269  1.1  christos 		  break;
   8270  1.1  christos 		}
   8271  1.1  christos 	    }
   8272  1.1  christos 	  break;
   8273  1.1  christos 
   8274  1.1  christos 	case R_PPC_RELAX_PLT:
   8275  1.1  christos 	case R_PPC_RELAX_PLTREL24:
   8276  1.1  christos 	  if (h != NULL)
   8277  1.7  christos 	    {
   8278  1.7  christos 	      struct plt_entry *ent;
   8279  1.1  christos 	      bfd_vma got2_addend = 0;
   8280  1.1  christos 
   8281  1.7  christos 	      if (r_type == R_PPC_RELAX_PLTREL24)
   8282  1.1  christos 		{
   8283  1.1  christos 		  if (bfd_link_pic (info))
   8284  1.1  christos 		    got2_addend = addend;
   8285  1.3  christos 		  addend = 0;
   8286  1.3  christos 		}
   8287  1.3  christos 	      ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
   8288  1.3  christos 	      if (htab->plt_type == PLT_NEW)
   8289  1.3  christos 		relocation = (htab->glink->output_section->vma
   8290  1.3  christos 			      + htab->glink->output_offset
   8291  1.3  christos 			      + ent->glink_offset);
   8292  1.3  christos 	      else
   8293  1.3  christos 		relocation = (htab->elf.splt->output_section->vma
   8294  1.3  christos 			      + htab->elf.splt->output_offset
   8295  1.3  christos 			      + ent->plt.offset);
   8296  1.7  christos 	    }
   8297  1.7  christos 	  /* Fall through.  */
   8298  1.7  christos 
   8299  1.3  christos 	case R_PPC_RELAX:
   8300  1.3  christos 	  {
   8301  1.3  christos 	    const int *stub;
   8302  1.3  christos 	    size_t size;
   8303  1.3  christos 	    size_t insn_offset = rel->r_offset;
   8304  1.3  christos 	    unsigned int insn;
   8305  1.3  christos 
   8306  1.3  christos 	    if (bfd_link_pic (info))
   8307  1.1  christos 	      {
   8308  1.1  christos 		relocation -= (input_section->output_section->vma
   8309  1.3  christos 			       + input_section->output_offset
   8310  1.3  christos 			       + rel->r_offset - 4);
   8311  1.1  christos 		stub = shared_stub_entry;
   8312  1.3  christos 		bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
   8313  1.3  christos 		bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
   8314  1.3  christos 		bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
   8315  1.7  christos 		stub += 3;
   8316  1.3  christos 		size = ARRAY_SIZE (shared_stub_entry) - 3;
   8317  1.3  christos 	      }
   8318  1.3  christos 	    else
   8319  1.3  christos 	      {
   8320  1.7  christos 		stub = stub_entry;
   8321  1.3  christos 		size = ARRAY_SIZE (stub_entry);
   8322  1.3  christos 	      }
   8323  1.3  christos 
   8324  1.3  christos 	    relocation += addend;
   8325  1.3  christos 	    if (bfd_link_relocatable (info))
   8326  1.3  christos 	      relocation = 0;
   8327  1.3  christos 
   8328  1.7  christos 	    /* First insn is HA, second is LO.  */
   8329  1.3  christos 	    insn = *stub++;
   8330  1.3  christos 	    insn |= ((relocation + 0x8000) >> 16) & 0xffff;
   8331  1.1  christos 	    bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8332  1.1  christos 	    insn_offset += 4;
   8333  1.1  christos 
   8334  1.1  christos 	    insn = *stub++;
   8335  1.1  christos 	    insn |= relocation & 0xffff;
   8336  1.3  christos 	    bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8337  1.3  christos 	    insn_offset += 4;
   8338  1.3  christos 	    size -= 2;
   8339  1.3  christos 
   8340  1.3  christos 	    while (size != 0)
   8341  1.3  christos 	      {
   8342  1.3  christos 		insn = *stub++;
   8343  1.1  christos 		--size;
   8344  1.1  christos 		bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8345  1.1  christos 		insn_offset += 4;
   8346  1.1  christos 	      }
   8347  1.1  christos 
   8348  1.1  christos 	    /* Rewrite the reloc and convert one of the trailing nop
   8349  1.1  christos 	       relocs to describe this relocation.  */
   8350  1.1  christos 	    BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
   8351  1.1  christos 	    /* The relocs are at the bottom 2 bytes */
   8352  1.1  christos 	    wrel->r_offset = rel->r_offset + d_offset;
   8353  1.1  christos 	    wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
   8354  1.1  christos 	    wrel->r_addend = rel->r_addend;
   8355  1.1  christos 	    memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
   8356  1.1  christos 	    wrel++, rel++;
   8357  1.1  christos 	    wrel->r_offset += 4;
   8358  1.1  christos 	    wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
   8359  1.1  christos 	  }
   8360  1.1  christos 	  continue;
   8361  1.1  christos 
   8362  1.1  christos 	  /* Indirect .sdata relocation.  */
   8363  1.1  christos 	case R_PPC_EMB_SDAI16:
   8364  1.1  christos 	  BFD_ASSERT (htab->sdata[0].section != NULL);
   8365  1.1  christos 	  if (!is_static_defined (htab->sdata[0].sym))
   8366  1.1  christos 	    {
   8367  1.1  christos 	      unresolved_reloc = TRUE;
   8368  1.1  christos 	      break;
   8369  1.1  christos 	    }
   8370  1.1  christos 	  relocation
   8371  1.1  christos 	    = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
   8372  1.1  christos 						 h, relocation, rel);
   8373  1.1  christos 	  addend = 0;
   8374  1.1  christos 	  break;
   8375  1.1  christos 
   8376  1.1  christos 	  /* Indirect .sdata2 relocation.  */
   8377  1.1  christos 	case R_PPC_EMB_SDA2I16:
   8378  1.1  christos 	  BFD_ASSERT (htab->sdata[1].section != NULL);
   8379  1.1  christos 	  if (!is_static_defined (htab->sdata[1].sym))
   8380  1.1  christos 	    {
   8381  1.1  christos 	      unresolved_reloc = TRUE;
   8382  1.1  christos 	      break;
   8383  1.1  christos 	    }
   8384  1.9  christos 	  relocation
   8385  1.9  christos 	    = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
   8386  1.1  christos 						 h, relocation, rel);
   8387  1.1  christos 	  addend = 0;
   8388  1.1  christos 	  break;
   8389  1.1  christos 
   8390  1.1  christos 	  /* Handle the TOC16 reloc.  We want to use the offset within the .got
   8391  1.1  christos 	     section, not the actual VMA.  This is appropriate when generating
   8392  1.1  christos 	     an embedded ELF object, for which the .got section acts like the
   8393  1.3  christos 	     AIX .toc section.  */
   8394  1.3  christos 	case R_PPC_TOC16:			/* phony GOT16 relocations */
   8395  1.3  christos 	  if (sec == NULL || sec->output_section == NULL)
   8396  1.3  christos 	    {
   8397  1.1  christos 	      unresolved_reloc = TRUE;
   8398  1.7  christos 	      break;
   8399  1.1  christos 	    }
   8400  1.1  christos 	  BFD_ASSERT (strcmp (bfd_section_name (sec), ".got") == 0
   8401  1.1  christos 		      || strcmp (bfd_section_name (sec), ".cgot") == 0);
   8402  1.1  christos 
   8403  1.1  christos 	  addend -= sec->output_section->vma + sec->output_offset + 0x8000;
   8404  1.1  christos 	  break;
   8405  1.1  christos 
   8406  1.1  christos 	case R_PPC_PLTREL24:
   8407  1.1  christos 	  if (h != NULL && ifunc == NULL)
   8408  1.1  christos 	    {
   8409  1.1  christos 	      struct plt_entry *ent;
   8410  1.1  christos 
   8411  1.1  christos 	      ent = find_plt_ent (&h->plt.plist, got2,
   8412  1.1  christos 				  bfd_link_pic (info) ? addend : 0);
   8413  1.1  christos 	      if (ent == NULL
   8414  1.7  christos 		  || htab->elf.splt == NULL)
   8415  1.7  christos 		{
   8416  1.1  christos 		  /* We didn't make a PLT entry for this symbol.  This
   8417  1.1  christos 		     happens when statically linking PIC code, or when
   8418  1.1  christos 		     using -Bsymbolic.  */
   8419  1.1  christos 		}
   8420  1.1  christos 	      else
   8421  1.1  christos 		{
   8422  1.1  christos 		  /* Relocation is to the entry for this symbol in the
   8423  1.1  christos 		     procedure linkage table.  */
   8424  1.1  christos 		  unresolved_reloc = FALSE;
   8425  1.1  christos 		  if (htab->plt_type == PLT_NEW)
   8426  1.7  christos 		    relocation = (htab->glink->output_section->vma
   8427  1.7  christos 				  + htab->glink->output_offset
   8428  1.7  christos 				  + ent->glink_offset);
   8429  1.7  christos 		  else
   8430  1.7  christos 		    relocation = (htab->elf.splt->output_section->vma
   8431  1.7  christos 				  + htab->elf.splt->output_offset
   8432  1.7  christos 				  + ent->plt.offset);
   8433  1.7  christos 		}
   8434  1.7  christos 	    }
   8435  1.7  christos 
   8436  1.7  christos 	  /* R_PPC_PLTREL24 is rather special.  If non-zero, the
   8437  1.7  christos 	     addend specifies the GOT pointer offset within .got2.
   8438  1.7  christos 	     Don't apply it to the relocation field.  */
   8439  1.7  christos 	  addend = 0;
   8440  1.7  christos 	  break;
   8441  1.7  christos 
   8442  1.7  christos 	case R_PPC_PLTSEQ:
   8443  1.7  christos 	case R_PPC_PLTCALL:
   8444  1.7  christos 	case R_PPC_PLT16_LO:
   8445  1.7  christos 	case R_PPC_PLT16_HI:
   8446  1.7  christos 	case R_PPC_PLT16_HA:
   8447  1.7  christos 	  plt_list = NULL;
   8448  1.7  christos 	  if (h != NULL)
   8449  1.7  christos 	    plt_list = &h->plt.plist;
   8450  1.7  christos 	  else if (ifunc != NULL)
   8451  1.7  christos 	    plt_list = ifunc;
   8452  1.7  christos 	  else if (local_got_offsets != NULL)
   8453  1.7  christos 	    {
   8454  1.7  christos 	      struct plt_entry **local_plt;
   8455  1.7  christos 	      local_plt = (struct plt_entry **) (local_got_offsets
   8456  1.7  christos 						 + symtab_hdr->sh_info);
   8457  1.7  christos 	      plt_list = local_plt + r_symndx;
   8458  1.7  christos 	    }
   8459  1.7  christos 	  unresolved_reloc = TRUE;
   8460  1.7  christos 	  if (plt_list != NULL)
   8461  1.7  christos 	    {
   8462  1.7  christos 	      struct plt_entry *ent;
   8463  1.7  christos 
   8464  1.7  christos 	      ent = find_plt_ent (plt_list, got2,
   8465  1.7  christos 				  bfd_link_pic (info) ? addend : 0);
   8466  1.7  christos 	      if (ent != NULL && ent->plt.offset != (bfd_vma) -1)
   8467  1.7  christos 		{
   8468  1.7  christos 		  asection *plt;
   8469  1.7  christos 
   8470  1.7  christos 		  unresolved_reloc = FALSE;
   8471  1.7  christos 		  plt = htab->elf.splt;
   8472  1.7  christos 		  if (!htab->elf.dynamic_sections_created
   8473  1.7  christos 		      || h == NULL
   8474  1.7  christos 		      || h->dynindx == -1)
   8475  1.7  christos 		    {
   8476  1.7  christos 		      if (ifunc != NULL)
   8477  1.7  christos 			plt = htab->elf.iplt;
   8478  1.7  christos 		      else
   8479  1.7  christos 			plt = htab->pltlocal;
   8480  1.7  christos 		    }
   8481  1.7  christos 		  relocation = (plt->output_section->vma
   8482  1.7  christos 				+ plt->output_offset
   8483  1.7  christos 				+ ent->plt.offset);
   8484  1.7  christos 		  if (bfd_link_pic (info))
   8485  1.1  christos 		    {
   8486  1.1  christos 		      bfd_vma got = 0;
   8487  1.1  christos 
   8488  1.1  christos 		      if (ent->addend >= 32768)
   8489  1.1  christos 			got = (ent->addend
   8490  1.1  christos 			       + ent->sec->output_section->vma
   8491  1.1  christos 			       + ent->sec->output_offset);
   8492  1.1  christos 		      else
   8493  1.1  christos 			got = SYM_VAL (htab->elf.hgot);
   8494  1.1  christos 		      relocation -= got;
   8495  1.1  christos 		    }
   8496  1.1  christos 		}
   8497  1.1  christos 	    }
   8498  1.1  christos 	  addend = 0;
   8499  1.1  christos 	  break;
   8500  1.9  christos 
   8501  1.3  christos 	  /* Relocate against _SDA_BASE_.  */
   8502  1.3  christos 	case R_PPC_SDAREL16:
   8503  1.1  christos 	  {
   8504  1.7  christos 	    const char *name;
   8505  1.7  christos 	    struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   8506  1.7  christos 
   8507  1.7  christos 	    if (sec == NULL
   8508  1.1  christos 		|| sec->output_section == NULL
   8509  1.1  christos 		|| !is_static_defined (sda))
   8510  1.1  christos 	      {
   8511  1.1  christos 		unresolved_reloc = TRUE;
   8512  1.1  christos 		break;
   8513  1.1  christos 	      }
   8514  1.1  christos 	    addend -= SYM_VAL (sda);
   8515  1.1  christos 
   8516  1.1  christos 	    name = bfd_section_name (sec->output_section);
   8517  1.1  christos 	    if (!(strcmp (name, ".sdata") == 0
   8518  1.1  christos 		  || strcmp (name, ".sbss") == 0))
   8519  1.1  christos 	      {
   8520  1.1  christos 		_bfd_error_handler
   8521  1.1  christos 		  /* xgettext:c-format */
   8522  1.1  christos 		  (_("%pB: the target (%s) of a %s relocation is "
   8523  1.1  christos 		     "in the wrong output section (%s)"),
   8524  1.1  christos 		   input_bfd,
   8525  1.1  christos 		   sym_name,
   8526  1.1  christos 		   howto->name,
   8527  1.1  christos 		   name);
   8528  1.1  christos 	      }
   8529  1.1  christos 	  }
   8530  1.1  christos 	  break;
   8531  1.9  christos 
   8532  1.3  christos 	  /* Relocate against _SDA2_BASE_.  */
   8533  1.3  christos 	case R_PPC_EMB_SDA2REL:
   8534  1.1  christos 	  {
   8535  1.7  christos 	    const char *name;
   8536  1.7  christos 	    struct elf_link_hash_entry *sda = htab->sdata[1].sym;
   8537  1.7  christos 
   8538  1.7  christos 	    if (sec == NULL
   8539  1.1  christos 		|| sec->output_section == NULL
   8540  1.1  christos 		|| !is_static_defined (sda))
   8541  1.1  christos 	      {
   8542  1.1  christos 		unresolved_reloc = TRUE;
   8543  1.1  christos 		break;
   8544  1.1  christos 	      }
   8545  1.1  christos 	    addend -= SYM_VAL (sda);
   8546  1.1  christos 
   8547  1.1  christos 	    name = bfd_section_name (sec->output_section);
   8548  1.3  christos 	    if (!(strcmp (name, ".sdata2") == 0
   8549  1.7  christos 		  || strcmp (name, ".sbss2") == 0))
   8550  1.7  christos 	      {
   8551  1.7  christos 		_bfd_error_handler
   8552  1.3  christos 		  /* xgettext:c-format */
   8553  1.1  christos 		  (_("%pB: the target (%s) of a %s relocation is "
   8554  1.1  christos 		     "in the wrong output section (%s)"),
   8555  1.3  christos 		   input_bfd,
   8556  1.7  christos 		   sym_name,
   8557  1.7  christos 		   howto->name,
   8558  1.7  christos 		   name);
   8559  1.3  christos 	      }
   8560  1.1  christos 	  }
   8561  1.1  christos 	  break;
   8562  1.3  christos 
   8563  1.7  christos 	case R_PPC_VLE_LO16A:
   8564  1.7  christos 	  relocation = relocation + addend;
   8565  1.7  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8566  1.3  christos 			       contents + rel->r_offset, relocation,
   8567  1.1  christos 			       split16a_type, htab->params->vle_reloc_fixup);
   8568  1.1  christos 	  goto copy_reloc;
   8569  1.3  christos 
   8570  1.7  christos 	case R_PPC_VLE_LO16D:
   8571  1.7  christos 	  relocation = relocation + addend;
   8572  1.7  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8573  1.3  christos 			       contents + rel->r_offset, relocation,
   8574  1.1  christos 			       split16d_type, htab->params->vle_reloc_fixup);
   8575  1.1  christos 	  goto copy_reloc;
   8576  1.3  christos 
   8577  1.7  christos 	case R_PPC_VLE_HI16A:
   8578  1.7  christos 	  relocation = (relocation + addend) >> 16;
   8579  1.7  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8580  1.3  christos 			       contents + rel->r_offset, relocation,
   8581  1.1  christos 			       split16a_type, htab->params->vle_reloc_fixup);
   8582  1.1  christos 	  goto copy_reloc;
   8583  1.3  christos 
   8584  1.7  christos 	case R_PPC_VLE_HI16D:
   8585  1.7  christos 	  relocation = (relocation + addend) >> 16;
   8586  1.7  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8587  1.3  christos 			       contents + rel->r_offset, relocation,
   8588  1.1  christos 			       split16d_type, htab->params->vle_reloc_fixup);
   8589  1.1  christos 	  goto copy_reloc;
   8590  1.1  christos 
   8591  1.1  christos 	case R_PPC_VLE_HA16A:
   8592  1.1  christos 	  relocation = (relocation + addend + 0x8000) >> 16;
   8593  1.1  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8594  1.1  christos 			       contents + rel->r_offset, relocation,
   8595  1.1  christos 			       split16a_type, htab->params->vle_reloc_fixup);
   8596  1.1  christos 	  goto copy_reloc;
   8597  1.3  christos 
   8598  1.1  christos 	case R_PPC_VLE_HA16D:
   8599  1.1  christos 	  relocation = (relocation + addend + 0x8000) >> 16;
   8600  1.1  christos 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8601  1.1  christos 			       contents + rel->r_offset, relocation,
   8602  1.1  christos 			       split16d_type, htab->params->vle_reloc_fixup);
   8603  1.1  christos 	  goto copy_reloc;
   8604  1.1  christos 
   8605  1.1  christos 	  /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0.  */
   8606  1.9  christos 	case R_PPC_EMB_SDA21:
   8607  1.3  christos 	case R_PPC_VLE_SDA21:
   8608  1.3  christos 	case R_PPC_EMB_RELSDA:
   8609  1.1  christos 	case R_PPC_VLE_SDA21_LO:
   8610  1.1  christos 	  {
   8611  1.1  christos 	    const char *name;
   8612  1.1  christos 	    int reg;
   8613  1.3  christos 	    unsigned int insn;
   8614  1.3  christos 	    struct elf_link_hash_entry *sda = NULL;
   8615  1.1  christos 
   8616  1.1  christos 	    if (sec == NULL || sec->output_section == NULL)
   8617  1.1  christos 	      {
   8618  1.1  christos 		unresolved_reloc = TRUE;
   8619  1.1  christos 		break;
   8620  1.1  christos 	      }
   8621  1.1  christos 
   8622  1.1  christos 	    name = bfd_section_name (sec->output_section);
   8623  1.1  christos 	    if (strcmp (name, ".sdata") == 0
   8624  1.1  christos 		|| strcmp (name, ".sbss") == 0)
   8625  1.1  christos 	      {
   8626  1.7  christos 		reg = 13;
   8627  1.7  christos 		sda = htab->sdata[0].sym;
   8628  1.7  christos 	      }
   8629  1.7  christos 	    else if (strcmp (name, ".sdata2") == 0
   8630  1.1  christos 		     || strcmp (name, ".sbss2") == 0)
   8631  1.1  christos 	      {
   8632  1.1  christos 		reg = 2;
   8633  1.1  christos 		sda = htab->sdata[1].sym;
   8634  1.1  christos 	      }
   8635  1.1  christos 	    else if (strcmp (name, ".PPC.EMB.sdata0") == 0
   8636  1.1  christos 		     || strcmp (name, ".PPC.EMB.sbss0") == 0)
   8637  1.3  christos 	      {
   8638  1.1  christos 		reg = 0;
   8639  1.1  christos 	      }
   8640  1.1  christos 	    else
   8641  1.1  christos 	      {
   8642  1.1  christos 		_bfd_error_handler
   8643  1.1  christos 		  /* xgettext:c-format */
   8644  1.1  christos 		  (_("%pB: the target (%s) of a %s relocation is "
   8645  1.1  christos 		     "in the wrong output section (%s)"),
   8646  1.1  christos 		   input_bfd,
   8647  1.1  christos 		   sym_name,
   8648  1.1  christos 		   howto->name,
   8649  1.1  christos 		   name);
   8650  1.9  christos 
   8651  1.9  christos 		bfd_set_error (bfd_error_bad_value);
   8652  1.9  christos 		ret = FALSE;
   8653  1.9  christos 		goto copy_reloc;
   8654  1.9  christos 	      }
   8655  1.9  christos 
   8656  1.9  christos 	    if (sda != NULL)
   8657  1.9  christos 	      {
   8658  1.9  christos 		if (!is_static_defined (sda))
   8659  1.9  christos 		  {
   8660  1.9  christos 		    unresolved_reloc = TRUE;
   8661  1.9  christos 		    break;
   8662  1.9  christos 		  }
   8663  1.7  christos 		addend -= SYM_VAL (sda);
   8664  1.1  christos 	      }
   8665  1.1  christos 
   8666  1.1  christos 	    if (r_type == R_PPC_EMB_RELSDA)
   8667  1.1  christos 	      break;
   8668  1.3  christos 
   8669  1.3  christos 	    /* The PowerPC Embedded Application Binary Interface
   8670  1.3  christos 	       version 1.0 insanely chose to specify R_PPC_EMB_SDA21
   8671  1.3  christos 	       operating on a 24-bit field at r_offset.  GNU as and
   8672  1.3  christos 	       GNU ld have always assumed R_PPC_EMB_SDA21 operates on
   8673  1.3  christos 	       a 32-bit bit insn at r_offset.  Cope with object file
   8674  1.3  christos 	       producers that possibly comply with the EABI in
   8675  1.3  christos 	       generating an odd r_offset for big-endian objects.  */
   8676  1.3  christos 	    if (r_type == R_PPC_EMB_SDA21)
   8677  1.3  christos 	      rel->r_offset &= ~1;
   8678  1.3  christos 
   8679  1.3  christos 	    insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   8680  1.3  christos 	    if (reg == 0
   8681  1.3  christos 		&& (r_type == R_PPC_VLE_SDA21
   8682  1.3  christos 		    || r_type == R_PPC_VLE_SDA21_LO))
   8683  1.7  christos 	      {
   8684  1.3  christos 		relocation = relocation + addend;
   8685  1.3  christos 		addend = 0;
   8686  1.3  christos 
   8687  1.3  christos 		/* Force e_li insn, keeping RT from original insn.  */
   8688  1.3  christos 		insn &= 0x1f << 21;
   8689  1.1  christos 		insn |= 28u << 26;
   8690  1.9  christos 
   8691  1.9  christos 		/* We have an li20 field, bits 17..20, 11..15, 21..31.  */
   8692  1.7  christos 		/* Top 4 bits of value to 17..20.  */
   8693  1.1  christos 		insn |= (relocation & 0xf0000) >> 5;
   8694  1.1  christos 		/* Next 5 bits of the value to 11..15.  */
   8695  1.1  christos 		insn |= (relocation & 0xf800) << 5;
   8696  1.1  christos 		/* And the final 11 bits of the value to bits 21 to 31.  */
   8697  1.1  christos 		insn |= relocation & 0x7ff;
   8698  1.1  christos 
   8699  1.1  christos 		bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   8700  1.1  christos 
   8701  1.1  christos 		if (r_type == R_PPC_VLE_SDA21
   8702  1.1  christos 		    && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
   8703  1.1  christos 		  goto overflow;
   8704  1.1  christos 		goto copy_reloc;
   8705  1.1  christos 	      }
   8706  1.1  christos 	    /* Fill in register field.  */
   8707  1.1  christos 	    insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
   8708  1.1  christos 	    bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   8709  1.1  christos 	  }
   8710  1.1  christos 	  break;
   8711  1.1  christos 
   8712  1.1  christos 	case R_PPC_VLE_SDAREL_LO16A:
   8713  1.9  christos 	case R_PPC_VLE_SDAREL_LO16D:
   8714  1.3  christos 	case R_PPC_VLE_SDAREL_HI16A:
   8715  1.3  christos 	case R_PPC_VLE_SDAREL_HI16D:
   8716  1.7  christos 	case R_PPC_VLE_SDAREL_HA16A:
   8717  1.3  christos 	case R_PPC_VLE_SDAREL_HA16D:
   8718  1.3  christos 	  {
   8719  1.7  christos 	    bfd_vma value;
   8720  1.1  christos 	    const char *name;
   8721  1.1  christos 	    struct elf_link_hash_entry *sda = NULL;
   8722  1.7  christos 
   8723  1.7  christos 	    if (sec == NULL || sec->output_section == NULL)
   8724  1.7  christos 	      {
   8725  1.1  christos 		unresolved_reloc = TRUE;
   8726  1.1  christos 		break;
   8727  1.1  christos 	      }
   8728  1.1  christos 
   8729  1.1  christos 	    name = bfd_section_name (sec->output_section);
   8730  1.1  christos 	    if (strcmp (name, ".sdata") == 0
   8731  1.1  christos 		|| strcmp (name, ".sbss") == 0)
   8732  1.1  christos 	      sda = htab->sdata[0].sym;
   8733  1.3  christos 	    else if (strcmp (name, ".sdata2") == 0
   8734  1.1  christos 		     || strcmp (name, ".sbss2") == 0)
   8735  1.1  christos 	      sda = htab->sdata[1].sym;
   8736  1.7  christos 	    else
   8737  1.1  christos 	      {
   8738  1.7  christos 		_bfd_error_handler
   8739  1.7  christos 		  /* xgettext:c-format */
   8740  1.1  christos 		  (_("%pB: the target (%s) of a %s relocation is "
   8741  1.7  christos 		     "in the wrong output section (%s)"),
   8742  1.3  christos 		   input_bfd,
   8743  1.3  christos 		   sym_name,
   8744  1.7  christos 		   howto->name,
   8745  1.7  christos 		   name);
   8746  1.7  christos 
   8747  1.7  christos 		bfd_set_error (bfd_error_bad_value);
   8748  1.3  christos 		ret = FALSE;
   8749  1.7  christos 		goto copy_reloc;
   8750  1.7  christos 	      }
   8751  1.7  christos 
   8752  1.7  christos 	    if (sda == NULL || !is_static_defined (sda))
   8753  1.3  christos 	      {
   8754  1.3  christos 		unresolved_reloc = TRUE;
   8755  1.3  christos 		break;
   8756  1.7  christos 	      }
   8757  1.7  christos 	    value = relocation + addend - SYM_VAL (sda);
   8758  1.7  christos 
   8759  1.7  christos 	    if (r_type == R_PPC_VLE_SDAREL_LO16A)
   8760  1.3  christos 	      ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8761  1.3  christos 				   contents + rel->r_offset, value,
   8762  1.3  christos 				   split16a_type,
   8763  1.3  christos 				   htab->params->vle_reloc_fixup);
   8764  1.7  christos 	    else if (r_type == R_PPC_VLE_SDAREL_LO16D)
   8765  1.7  christos 	      ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8766  1.7  christos 				   contents + rel->r_offset, value,
   8767  1.7  christos 				   split16d_type,
   8768  1.3  christos 				   htab->params->vle_reloc_fixup);
   8769  1.3  christos 	    else if (r_type == R_PPC_VLE_SDAREL_HI16A)
   8770  1.3  christos 	      {
   8771  1.3  christos 		value = value >> 16;
   8772  1.7  christos 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8773  1.7  christos 				     contents + rel->r_offset, value,
   8774  1.7  christos 				     split16a_type,
   8775  1.7  christos 				     htab->params->vle_reloc_fixup);
   8776  1.3  christos 	      }
   8777  1.3  christos 	    else if (r_type == R_PPC_VLE_SDAREL_HI16D)
   8778  1.3  christos 	      {
   8779  1.3  christos 		value = value >> 16;
   8780  1.7  christos 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8781  1.7  christos 				     contents + rel->r_offset, value,
   8782  1.7  christos 				     split16d_type,
   8783  1.7  christos 				     htab->params->vle_reloc_fixup);
   8784  1.1  christos 	      }
   8785  1.1  christos 	    else if (r_type == R_PPC_VLE_SDAREL_HA16A)
   8786  1.3  christos 	      {
   8787  1.1  christos 		value = (value + 0x8000) >> 16;
   8788  1.7  christos 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8789  1.7  christos 				     contents + rel->r_offset, value,
   8790  1.7  christos 				     split16a_type,
   8791  1.7  christos 				     htab->params->vle_reloc_fixup);
   8792  1.1  christos 	      }
   8793  1.1  christos 	    else if (r_type == R_PPC_VLE_SDAREL_HA16D)
   8794  1.1  christos 	      {
   8795  1.1  christos 		value = (value + 0x8000) >> 16;
   8796  1.1  christos 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8797  1.1  christos 				     contents + rel->r_offset, value,
   8798  1.1  christos 				     split16d_type,
   8799  1.1  christos 				     htab->params->vle_reloc_fixup);
   8800  1.1  christos 	      }
   8801  1.1  christos 	  }
   8802  1.1  christos 	  goto copy_reloc;
   8803  1.1  christos 
   8804  1.1  christos 	case R_PPC_VLE_ADDR20:
   8805  1.1  christos 	  ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
   8806  1.1  christos 	  continue;
   8807  1.1  christos 
   8808  1.1  christos 	  /* Relocate against the beginning of the section.  */
   8809  1.1  christos 	case R_PPC_SECTOFF:
   8810  1.1  christos 	case R_PPC_SECTOFF_LO:
   8811  1.1  christos 	case R_PPC_SECTOFF_HI:
   8812  1.1  christos 	case R_PPC_SECTOFF_HA:
   8813  1.1  christos 	  if (sec == NULL || sec->output_section == NULL)
   8814  1.1  christos 	    {
   8815  1.1  christos 	      unresolved_reloc = TRUE;
   8816  1.1  christos 	      break;
   8817  1.1  christos 	    }
   8818  1.1  christos 	  addend -= sec->output_section->vma;
   8819  1.1  christos 	  break;
   8820  1.1  christos 
   8821  1.1  christos 	  /* Negative relocations.  */
   8822  1.1  christos 	case R_PPC_EMB_NADDR32:
   8823  1.1  christos 	case R_PPC_EMB_NADDR16:
   8824  1.1  christos 	case R_PPC_EMB_NADDR16_LO:
   8825  1.1  christos 	case R_PPC_EMB_NADDR16_HI:
   8826  1.1  christos 	case R_PPC_EMB_NADDR16_HA:
   8827  1.7  christos 	  addend -= 2 * relocation;
   8828  1.7  christos 	  break;
   8829  1.7  christos 
   8830  1.1  christos 	case R_PPC_COPY:
   8831  1.1  christos 	case R_PPC_GLOB_DAT:
   8832  1.1  christos 	case R_PPC_JMP_SLOT:
   8833  1.3  christos 	case R_PPC_RELATIVE:
   8834  1.1  christos 	case R_PPC_IRELATIVE:
   8835  1.1  christos 	case R_PPC_PLT32:
   8836  1.7  christos 	case R_PPC_PLTREL32:
   8837  1.7  christos 	case R_PPC_ADDR30:
   8838  1.7  christos 	case R_PPC_EMB_RELSEC16:
   8839  1.7  christos 	case R_PPC_EMB_RELST_LO:
   8840  1.7  christos 	case R_PPC_EMB_RELST_HI:
   8841  1.7  christos 	case R_PPC_EMB_RELST_HA:
   8842  1.7  christos 	case R_PPC_EMB_BIT_FLD:
   8843  1.7  christos 	  /* xgettext:c-format */
   8844  1.7  christos 	  _bfd_error_handler (_("%pB: %s unsupported"),
   8845  1.7  christos 			      input_bfd, howto->name);
   8846  1.7  christos 
   8847  1.7  christos 	  bfd_set_error (bfd_error_invalid_operation);
   8848  1.7  christos 	  ret = FALSE;
   8849  1.7  christos 	  goto copy_reloc;
   8850  1.7  christos 	}
   8851  1.7  christos 
   8852  1.7  christos       switch (r_type)
   8853  1.7  christos 	{
   8854  1.9  christos 	default:
   8855  1.7  christos 	  break;
   8856  1.7  christos 
   8857  1.7  christos 	case R_PPC_PLTCALL:
   8858  1.7  christos 	  if (unresolved_reloc)
   8859  1.7  christos 	    {
   8860  1.7  christos 	      bfd_byte *p = contents + rel->r_offset;
   8861  1.7  christos 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   8862  1.7  christos 	      insn &= 1;
   8863  1.7  christos 	      bfd_put_32 (input_bfd, B | insn, p);
   8864  1.7  christos 	      unresolved_reloc = save_unresolved_reloc;
   8865  1.7  christos 	      r_type = R_PPC_REL24;
   8866  1.7  christos 	      howto = ppc_elf_howto_table[r_type];
   8867  1.7  christos 	    }
   8868  1.7  christos 	  else if (htab->plt_type != PLT_NEW)
   8869  1.7  christos 	    info->callbacks->einfo
   8870  1.7  christos 	      (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
   8871  1.7  christos 	       input_bfd, input_section, rel->r_offset,
   8872  1.9  christos 	       howto->name);
   8873  1.7  christos 	  break;
   8874  1.7  christos 
   8875  1.7  christos 	case R_PPC_PLTSEQ:
   8876  1.7  christos 	case R_PPC_PLT16_HA:
   8877  1.7  christos 	case R_PPC_PLT16_LO:
   8878  1.1  christos 	  if (unresolved_reloc)
   8879  1.1  christos 	    {
   8880  1.1  christos 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   8881  1.1  christos 	      bfd_put_32 (input_bfd, NOP, p);
   8882  1.1  christos 	      unresolved_reloc = FALSE;
   8883  1.1  christos 	      r_type = R_PPC_NONE;
   8884  1.1  christos 	      howto = ppc_elf_howto_table[r_type];
   8885  1.1  christos 	    }
   8886  1.3  christos 	  else if (htab->plt_type != PLT_NEW)
   8887  1.1  christos 	    info->callbacks->einfo
   8888  1.1  christos 	      (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
   8889  1.1  christos 	       input_bfd, input_section, rel->r_offset,
   8890  1.1  christos 	       howto->name);
   8891  1.1  christos 	  break;
   8892  1.1  christos 	}
   8893  1.1  christos 
   8894  1.1  christos       /* Do any further special processing.  */
   8895  1.1  christos       switch (r_type)
   8896  1.1  christos 	{
   8897  1.1  christos 	default:
   8898  1.7  christos 	  break;
   8899  1.1  christos 
   8900  1.1  christos 	case R_PPC_ADDR16_HA:
   8901  1.1  christos 	case R_PPC_REL16_HA:
   8902  1.1  christos 	case R_PPC_REL16DX_HA:
   8903  1.1  christos 	case R_PPC_SECTOFF_HA:
   8904  1.1  christos 	case R_PPC_TPREL16_HA:
   8905  1.1  christos 	case R_PPC_DTPREL16_HA:
   8906  1.1  christos 	case R_PPC_EMB_NADDR16_HA:
   8907  1.1  christos 	case R_PPC_EMB_RELST_HA:
   8908  1.1  christos 	  /* It's just possible that this symbol is a weak symbol
   8909  1.1  christos 	     that's not actually defined anywhere.  In that case,
   8910  1.1  christos 	     'sec' would be NULL, and we should leave the symbol
   8911  1.1  christos 	     alone (it will be set to zero elsewhere in the link).  */
   8912  1.1  christos 	  if (sec == NULL)
   8913  1.1  christos 	    break;
   8914  1.1  christos 	  /* Fall through.  */
   8915  1.1  christos 
   8916  1.1  christos 	case R_PPC_PLT16_HA:
   8917  1.1  christos 	case R_PPC_GOT16_HA:
   8918  1.1  christos 	case R_PPC_GOT_TLSGD16_HA:
   8919  1.1  christos 	case R_PPC_GOT_TLSLD16_HA:
   8920  1.1  christos 	case R_PPC_GOT_TPREL16_HA:
   8921  1.1  christos 	case R_PPC_GOT_DTPREL16_HA:
   8922  1.1  christos 	  /* Add 0x10000 if sign bit in 0:15 is set.
   8923  1.1  christos 	     Bits 0:15 are not used.  */
   8924  1.1  christos 	  addend += 0x8000;
   8925  1.1  christos 	  break;
   8926  1.1  christos 
   8927  1.1  christos 	case R_PPC_ADDR16:
   8928  1.1  christos 	case R_PPC_ADDR16_LO:
   8929  1.1  christos 	case R_PPC_GOT16:
   8930  1.1  christos 	case R_PPC_GOT16_LO:
   8931  1.1  christos 	case R_PPC_SDAREL16:
   8932  1.1  christos 	case R_PPC_SECTOFF:
   8933  1.1  christos 	case R_PPC_SECTOFF_LO:
   8934  1.1  christos 	case R_PPC_DTPREL16:
   8935  1.1  christos 	case R_PPC_DTPREL16_LO:
   8936  1.7  christos 	case R_PPC_TPREL16:
   8937  1.3  christos 	case R_PPC_TPREL16_LO:
   8938  1.1  christos 	case R_PPC_GOT_TLSGD16:
   8939  1.1  christos 	case R_PPC_GOT_TLSGD16_LO:
   8940  1.1  christos 	case R_PPC_GOT_TLSLD16:
   8941  1.1  christos 	case R_PPC_GOT_TLSLD16_LO:
   8942  1.1  christos 	case R_PPC_GOT_DTPREL16:
   8943  1.1  christos 	case R_PPC_GOT_DTPREL16_LO:
   8944  1.1  christos 	case R_PPC_GOT_TPREL16:
   8945  1.3  christos 	case R_PPC_GOT_TPREL16_LO:
   8946  1.3  christos 	  {
   8947  1.3  christos 	    /* The 32-bit ABI lacks proper relocations to deal with
   8948  1.1  christos 	       certain 64-bit instructions.  Prevent damage to bits
   8949  1.1  christos 	       that make up part of the insn opcode.  */
   8950  1.3  christos 	    unsigned int insn, mask, lobit;
   8951  1.1  christos 
   8952  1.7  christos 	    insn = bfd_get_32 (input_bfd,
   8953  1.7  christos 			       contents + rel->r_offset - d_offset);
   8954  1.1  christos 	    mask = 0;
   8955  1.1  christos 	    if (is_insn_ds_form (insn))
   8956  1.1  christos 	      mask = 3;
   8957  1.1  christos 	    else if (is_insn_dq_form (insn))
   8958  1.1  christos 	      mask = 15;
   8959  1.1  christos 	    else
   8960  1.1  christos 	      break;
   8961  1.1  christos 	    relocation += addend;
   8962  1.1  christos 	    addend = insn & mask;
   8963  1.1  christos 	    lobit = mask & relocation;
   8964  1.1  christos 	    if (lobit != 0)
   8965  1.1  christos 	      {
   8966  1.1  christos 		relocation ^= lobit;
   8967  1.1  christos 		info->callbacks->einfo
   8968  1.1  christos 		  /* xgettext:c-format */
   8969  1.1  christos 		  (_("%H: error: %s against `%s' not a multiple of %u\n"),
   8970  1.1  christos 		   input_bfd, input_section, rel->r_offset,
   8971  1.1  christos 		   howto->name, sym_name, mask + 1);
   8972  1.1  christos 		bfd_set_error (bfd_error_bad_value);
   8973  1.1  christos 		ret = FALSE;
   8974  1.1  christos 	      }
   8975  1.1  christos 	  }
   8976  1.1  christos 	  break;
   8977  1.1  christos 	}
   8978  1.1  christos 
   8979  1.1  christos #ifdef DEBUG
   8980  1.1  christos       fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
   8981  1.7  christos 	       "offset = %ld, addend = %ld\n",
   8982  1.7  christos 	       howto->name,
   8983  1.1  christos 	       (int) r_type,
   8984  1.1  christos 	       sym_name,
   8985  1.1  christos 	       r_symndx,
   8986  1.1  christos 	       (long) rel->r_offset,
   8987  1.1  christos 	       (long) addend);
   8988  1.1  christos #endif
   8989  1.3  christos 
   8990  1.3  christos       if (unresolved_reloc
   8991  1.3  christos 	  && !((input_section->flags & SEC_DEBUGGING) != 0
   8992  1.3  christos 	       && h->def_dynamic)
   8993  1.3  christos 	  && _bfd_elf_section_offset (output_bfd, info, input_section,
   8994  1.3  christos 				      rel->r_offset) != (bfd_vma) -1)
   8995  1.3  christos 	{
   8996  1.3  christos 	  info->callbacks->einfo
   8997  1.3  christos 	    /* xgettext:c-format */
   8998  1.3  christos 	    (_("%H: unresolvable %s relocation against symbol `%s'\n"),
   8999  1.3  christos 	     input_bfd, input_section, rel->r_offset,
   9000  1.3  christos 	     howto->name,
   9001  1.3  christos 	     sym_name);
   9002  1.3  christos 	  ret = FALSE;
   9003  1.9  christos 	}
   9004  1.3  christos 
   9005  1.9  christos       /* 16-bit fields in insns mostly have signed values, but a
   9006  1.9  christos 	 few insns have 16-bit unsigned values.  Really, we should
   9007  1.9  christos 	 have different reloc types.  */
   9008  1.3  christos       if (howto->complain_on_overflow != complain_overflow_dont
   9009  1.3  christos 	  && howto->dst_mask == 0xffff
   9010  1.3  christos 	  && (input_section->flags & SEC_CODE) != 0)
   9011  1.3  christos 	{
   9012  1.3  christos 	  enum complain_overflow complain = complain_overflow_signed;
   9013  1.3  christos 
   9014  1.3  christos 	  if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
   9015  1.3  christos 	    {
   9016  1.3  christos 	      unsigned int insn;
   9017  1.3  christos 
   9018  1.3  christos 	      insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
   9019  1.3  christos 	      if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */)
   9020  1.3  christos 		complain = complain_overflow_bitfield;
   9021  1.3  christos 	      else if ((insn & (0x3fu << 26)) == 28u << 26 /* andi */
   9022  1.3  christos 		       || (insn & (0x3fu << 26)) == 24u << 26 /* ori */
   9023  1.3  christos 		       || (insn & (0x3fu << 26)) == 26u << 26 /* xori */)
   9024  1.3  christos 		complain = complain_overflow_unsigned;
   9025  1.3  christos 	    }
   9026  1.3  christos 	  if (howto->complain_on_overflow != complain)
   9027  1.3  christos 	    {
   9028  1.3  christos 	      alt_howto = *howto;
   9029  1.3  christos 	      alt_howto.complain_on_overflow = complain;
   9030  1.3  christos 	      howto = &alt_howto;
   9031  1.3  christos 	    }
   9032  1.3  christos 	}
   9033  1.3  christos 
   9034  1.3  christos       if (r_type == R_PPC_REL16DX_HA)
   9035  1.3  christos 	{
   9036  1.3  christos 	  /* Split field reloc isn't handled by _bfd_final_link_relocate.  */
   9037  1.3  christos 	  if (rel->r_offset + 4 > input_section->size)
   9038  1.3  christos 	    r = bfd_reloc_outofrange;
   9039  1.3  christos 	  else
   9040  1.3  christos 	    {
   9041  1.3  christos 	      unsigned int insn;
   9042  1.1  christos 
   9043  1.1  christos 	      relocation += addend;
   9044  1.1  christos 	      relocation -= (rel->r_offset
   9045  1.1  christos 			     + input_section->output_offset
   9046  1.1  christos 			     + input_section->output_section->vma);
   9047  1.3  christos 	      relocation >>= 16;
   9048  1.3  christos 	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   9049  1.3  christos 	      insn &= ~0x1fffc1;
   9050  1.3  christos 	      insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
   9051  1.3  christos 	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   9052  1.3  christos 	      r = bfd_reloc_ok;
   9053  1.3  christos 	    }
   9054  1.3  christos 	}
   9055  1.6  christos       else
   9056  1.6  christos 	r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
   9057  1.6  christos 				      rel->r_offset, relocation, addend);
   9058  1.1  christos 
   9059  1.1  christos       if (r != bfd_reloc_ok)
   9060  1.1  christos 	{
   9061  1.1  christos 	  if (r == bfd_reloc_overflow)
   9062  1.7  christos 	    {
   9063  1.7  christos 	    overflow:
   9064  1.1  christos 	      /* On code like "if (foo) foo();" don't report overflow
   9065  1.1  christos 		 on a branch to zero when foo is undefined.  */
   9066  1.1  christos 	      if (!warned
   9067  1.1  christos 		  && !(h != NULL
   9068  1.1  christos 		       && (h->root.type == bfd_link_hash_undefweak
   9069  1.3  christos 			   || h->root.type == bfd_link_hash_undefined)
   9070  1.3  christos 		       && is_branch_reloc (r_type)))
   9071  1.3  christos 		info->callbacks->reloc_overflow
   9072  1.3  christos 		  (info, (h ? &h->root : NULL), sym_name, howto->name,
   9073  1.3  christos 		   rel->r_addend, input_bfd, input_section, rel->r_offset);
   9074  1.3  christos 	    }
   9075  1.3  christos 	  else
   9076  1.3  christos 	    {
   9077  1.3  christos 	      info->callbacks->einfo
   9078  1.3  christos 		/* xgettext:c-format */
   9079  1.3  christos 		(_("%H: %s reloc against `%s': error %d\n"),
   9080  1.3  christos 		 input_bfd, input_section, rel->r_offset,
   9081  1.3  christos 		 howto->name, sym_name, (int) r);
   9082  1.3  christos 	      ret = FALSE;
   9083  1.3  christos 	    }
   9084  1.3  christos 	}
   9085  1.3  christos     copy_reloc:
   9086  1.3  christos       if (wrel != rel)
   9087  1.3  christos 	*wrel = *rel;
   9088  1.3  christos     }
   9089  1.3  christos 
   9090  1.3  christos   if (wrel != rel)
   9091  1.3  christos     {
   9092  1.3  christos       Elf_Internal_Shdr *rel_hdr;
   9093  1.3  christos       size_t deleted = rel - wrel;
   9094  1.1  christos 
   9095  1.1  christos       rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
   9096  1.1  christos       rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
   9097  1.1  christos       if (rel_hdr->sh_size == 0)
   9098  1.1  christos 	{
   9099  1.1  christos 	  /* It is too late to remove an empty reloc section.  Leave
   9100  1.3  christos 	     one NONE reloc.
   9101  1.3  christos 	     ??? What is wrong with an empty section???  */
   9102  1.3  christos 	  rel_hdr->sh_size = rel_hdr->sh_entsize;
   9103  1.3  christos 	  deleted -= 1;
   9104  1.3  christos 	  wrel++;
   9105  1.3  christos 	}
   9106  1.3  christos       relend = wrel;
   9107  1.3  christos       rel_hdr = _bfd_elf_single_rel_hdr (input_section);
   9108  1.3  christos       rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
   9109  1.3  christos       input_section->reloc_count -= deleted;
   9110  1.3  christos     }
   9111  1.3  christos 
   9112  1.3  christos #ifdef DEBUG
   9113  1.3  christos   fprintf (stderr, "\n");
   9114  1.3  christos #endif
   9115  1.3  christos 
   9116  1.3  christos   if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
   9117  1.3  christos       && input_section->size != input_section->rawsize
   9118  1.3  christos       && (strcmp (input_section->output_section->name, ".init") == 0
   9119  1.3  christos 	  || strcmp (input_section->output_section->name, ".fini") == 0))
   9120  1.3  christos     {
   9121  1.3  christos       /* Branch around the trampolines.  */
   9122  1.3  christos       unsigned int insn = B + input_section->size - input_section->rawsize;
   9123  1.3  christos       bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
   9124  1.3  christos     }
   9125  1.3  christos 
   9126  1.3  christos   if (htab->params->ppc476_workaround
   9127  1.3  christos       && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
   9128  1.3  christos       && (!bfd_link_relocatable (info)
   9129  1.3  christos 	  || (input_section->output_section->alignment_power
   9130  1.3  christos 	      >= htab->params->pagesize_p2)))
   9131  1.3  christos     {
   9132  1.3  christos       bfd_vma start_addr, end_addr, addr;
   9133  1.3  christos       bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   9134  1.3  christos 
   9135  1.3  christos       if (relax_info->workaround_size != 0)
   9136  1.3  christos 	{
   9137  1.3  christos 	  bfd_byte *p;
   9138  1.3  christos 	  unsigned int n;
   9139  1.3  christos 	  bfd_byte fill[4];
   9140  1.3  christos 
   9141  1.3  christos 	  bfd_put_32 (input_bfd, BA, fill);
   9142  1.3  christos 	  p = contents + input_section->size - relax_info->workaround_size;
   9143  1.3  christos 	  n = relax_info->workaround_size >> 2;
   9144  1.3  christos 	  while (n--)
   9145  1.3  christos 	    {
   9146  1.3  christos 	      memcpy (p, fill, 4);
   9147  1.3  christos 	      p += 4;
   9148  1.3  christos 	    }
   9149  1.3  christos 	}
   9150  1.3  christos 
   9151  1.3  christos       /* The idea is: Replace the last instruction on a page with a
   9152  1.3  christos 	 branch to a patch area.  Put the insn there followed by a
   9153  1.3  christos 	 branch back to the next page.  Complicated a little by
   9154  1.3  christos 	 needing to handle moved conditional branches, and by not
   9155  1.3  christos 	 wanting to touch data-in-text.  */
   9156  1.3  christos 
   9157  1.3  christos       start_addr = (input_section->output_section->vma
   9158  1.3  christos 		    + input_section->output_offset);
   9159  1.3  christos       end_addr = (start_addr + input_section->size
   9160  1.3  christos 		  - relax_info->workaround_size);
   9161  1.3  christos       for (addr = ((start_addr & -pagesize) + pagesize - 4);
   9162  1.3  christos 	   addr < end_addr;
   9163  1.3  christos 	   addr += pagesize)
   9164  1.3  christos 	{
   9165  1.3  christos 	  bfd_vma offset = addr - start_addr;
   9166  1.3  christos 	  Elf_Internal_Rela *lo, *hi;
   9167  1.3  christos 	  bfd_boolean is_data;
   9168  1.3  christos 	  bfd_vma patch_off, patch_addr;
   9169  1.3  christos 	  unsigned int insn;
   9170  1.3  christos 
   9171  1.3  christos 	  /* Do we have a data reloc at this offset?  If so, leave
   9172  1.3  christos 	     the word alone.  */
   9173  1.3  christos 	  is_data = FALSE;
   9174  1.3  christos 	  lo = relocs;
   9175  1.3  christos 	  hi = relend;
   9176  1.3  christos 	  rel = NULL;
   9177  1.3  christos 	  while (lo < hi)
   9178  1.3  christos 	    {
   9179  1.3  christos 	      rel = lo + (hi - lo) / 2;
   9180  1.3  christos 	      if (rel->r_offset < offset)
   9181  1.3  christos 		lo = rel + 1;
   9182  1.3  christos 	      else if (rel->r_offset > offset + 3)
   9183  1.3  christos 		hi = rel;
   9184  1.3  christos 	      else
   9185  1.3  christos 		{
   9186  1.3  christos 		  switch (ELF32_R_TYPE (rel->r_info))
   9187  1.3  christos 		    {
   9188  1.3  christos 		    case R_PPC_ADDR32:
   9189  1.3  christos 		    case R_PPC_UADDR32:
   9190  1.3  christos 		    case R_PPC_REL32:
   9191  1.3  christos 		    case R_PPC_ADDR30:
   9192  1.3  christos 		      is_data = TRUE;
   9193  1.3  christos 		      break;
   9194  1.3  christos 		    default:
   9195  1.3  christos 		      break;
   9196  1.3  christos 		    }
   9197  1.3  christos 		  break;
   9198  1.3  christos 		}
   9199  1.3  christos 	    }
   9200  1.3  christos 	  if (is_data)
   9201  1.3  christos 	    continue;
   9202  1.3  christos 
   9203  1.3  christos 	  /* Some instructions can be left alone too.  Unconditional
   9204  1.3  christos 	     branches, except for bcctr with BO=0x14 (bctr, bctrl),
   9205  1.3  christos 	     avoid the icache failure.
   9206  1.3  christos 
   9207  1.3  christos 	     The problem occurs due to prefetch across a page boundary
   9208  1.3  christos 	     where stale instructions can be fetched from the next
   9209  1.3  christos 	     page, and the mechanism for flushing these bad
   9210  1.3  christos 	     instructions fails under certain circumstances.  The
   9211  1.3  christos 	     unconditional branches:
   9212  1.3  christos 	     1) Branch: b, bl, ba, bla,
   9213  1.3  christos 	     2) Branch Conditional: bc, bca, bcl, bcla,
   9214  1.3  christos 	     3) Branch Conditional to Link Register: bclr, bclrl,
   9215  1.3  christos 	     where (2) and (3) have BO=0x14 making them unconditional,
   9216  1.3  christos 	     prevent the bad prefetch because the prefetch itself is
   9217  1.3  christos 	     affected by these instructions.  This happens even if the
   9218  1.3  christos 	     instruction is not executed.
   9219  1.3  christos 
   9220  1.3  christos 	     A bctr example:
   9221  1.3  christos 	     .
   9222  1.3  christos 	     .	lis 9,new_page@ha
   9223  1.3  christos 	     .	addi 9,9,new_page@l
   9224  1.3  christos 	     .	mtctr 9
   9225  1.3  christos 	     .	bctr
   9226  1.3  christos 	     .	nop
   9227  1.3  christos 	     .	nop
   9228  1.3  christos 	     . new_page:
   9229  1.3  christos 	     .
   9230  1.3  christos 	     The bctr is not predicted taken due to ctr not being
   9231  1.9  christos 	     ready, so prefetch continues on past the bctr into the
   9232  1.9  christos 	     new page which might have stale instructions.  If they
   9233  1.7  christos 	     fail to be flushed, then they will be executed after the
   9234  1.9  christos 	     bctr executes.  Either of the following modifications
   9235  1.3  christos 	     prevent the bad prefetch from happening in the first
   9236  1.7  christos 	     place:
   9237  1.3  christos 	     .
   9238  1.3  christos 	     .	lis 9,new_page@ha	 lis 9,new_page@ha
   9239  1.3  christos 	     .	addi 9,9,new_page@l	 addi 9,9,new_page@l
   9240  1.3  christos 	     .	mtctr 9			 mtctr 9
   9241  1.3  christos 	     .	bctr			 bctr
   9242  1.3  christos 	     .	nop			 b somewhere_else
   9243  1.3  christos 	     .	b somewhere_else	 nop
   9244  1.3  christos 	     . new_page:		new_page:
   9245  1.3  christos 	     .  */
   9246  1.3  christos 	  insn = bfd_get_32 (input_bfd, contents + offset);
   9247  1.3  christos 	  if ((insn & (0x3fu << 26)) == (18u << 26)	    /* b,bl,ba,bla */
   9248  1.3  christos 	      || ((insn & (0x3fu << 26)) == (16u << 26)	    /* bc,bcl,bca,bcla*/
   9249  1.3  christos 		  && (insn & (0x14 << 21)) == (0x14 << 21)) /*	 with BO=0x14 */
   9250  1.3  christos 	      || ((insn & (0x3fu << 26)) == (19u << 26)
   9251  1.3  christos 		  && (insn & (0x3ff << 1)) == (16u << 1)    /* bclr,bclrl */
   9252  1.3  christos 		  && (insn & (0x14 << 21)) == (0x14 << 21)))/*	 with BO=0x14 */
   9253  1.3  christos 	    continue;
   9254  1.3  christos 
   9255  1.3  christos 	  patch_addr = (start_addr + input_section->size
   9256  1.3  christos 			- relax_info->workaround_size);
   9257  1.3  christos 	  patch_addr = (patch_addr + 15) & -16;
   9258  1.3  christos 	  patch_off = patch_addr - start_addr;
   9259  1.3  christos 	  bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
   9260  1.3  christos 
   9261  1.3  christos 	  if (rel != NULL
   9262  1.3  christos 	      && rel->r_offset >= offset
   9263  1.3  christos 	      && rel->r_offset < offset + 4)
   9264  1.3  christos 	    {
   9265  1.3  christos 	      asection *sreloc;
   9266  1.3  christos 
   9267  1.3  christos 	      /* If the insn we are patching had a reloc, adjust the
   9268  1.3  christos 		 reloc r_offset so that the reloc applies to the moved
   9269  1.3  christos 		 location.  This matters for -r and --emit-relocs.  */
   9270  1.3  christos 	      if (rel + 1 != relend)
   9271  1.3  christos 		{
   9272  1.3  christos 		  Elf_Internal_Rela tmp = *rel;
   9273  1.3  christos 
   9274  1.3  christos 		  /* Keep the relocs sorted by r_offset.  */
   9275  1.3  christos 		  memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
   9276  1.3  christos 		  relend[-1] = tmp;
   9277  1.3  christos 		}
   9278  1.3  christos 	      relend[-1].r_offset += patch_off - offset;
   9279  1.3  christos 
   9280  1.3  christos 	      /* Adjust REL16 addends too.  */
   9281  1.3  christos 	      switch (ELF32_R_TYPE (relend[-1].r_info))
   9282  1.3  christos 		{
   9283  1.3  christos 		case R_PPC_REL16:
   9284  1.3  christos 		case R_PPC_REL16_LO:
   9285  1.3  christos 		case R_PPC_REL16_HI:
   9286  1.3  christos 		case R_PPC_REL16_HA:
   9287  1.3  christos 		  relend[-1].r_addend += patch_off - offset;
   9288  1.3  christos 		  break;
   9289  1.3  christos 		default:
   9290  1.3  christos 		  break;
   9291  1.3  christos 		}
   9292  1.3  christos 
   9293  1.3  christos 	      /* If we are building a PIE or shared library with
   9294  1.3  christos 		 non-PIC objects, perhaps we had a dynamic reloc too?
   9295  1.3  christos 		 If so, the dynamic reloc must move with the insn.  */
   9296  1.3  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   9297  1.3  christos 	      if (sreloc != NULL)
   9298  1.3  christos 		{
   9299  1.3  christos 		  Elf32_External_Rela *slo, *shi, *srelend;
   9300  1.3  christos 		  bfd_vma soffset;
   9301  1.3  christos 
   9302  1.3  christos 		  slo = (Elf32_External_Rela *) sreloc->contents;
   9303  1.3  christos 		  shi = srelend = slo + sreloc->reloc_count;
   9304  1.3  christos 		  soffset = (offset + input_section->output_section->vma
   9305  1.3  christos 			     + input_section->output_offset);
   9306  1.3  christos 		  while (slo < shi)
   9307  1.3  christos 		    {
   9308  1.3  christos 		      Elf32_External_Rela *srel = slo + (shi - slo) / 2;
   9309  1.3  christos 		      bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
   9310  1.3  christos 						&outrel);
   9311  1.3  christos 		      if (outrel.r_offset < soffset)
   9312  1.3  christos 			slo = srel + 1;
   9313  1.3  christos 		      else if (outrel.r_offset > soffset + 3)
   9314  1.3  christos 			shi = srel;
   9315  1.3  christos 		      else
   9316  1.3  christos 			{
   9317  1.3  christos 			  if (srel + 1 != srelend)
   9318  1.9  christos 			    {
   9319  1.3  christos 			      memmove (srel, srel + 1,
   9320  1.3  christos 				       (srelend - (srel + 1)) * sizeof (*srel));
   9321  1.3  christos 			      srel = srelend - 1;
   9322  1.3  christos 			    }
   9323  1.3  christos 			  outrel.r_offset += patch_off - offset;
   9324  1.3  christos 			  bfd_elf32_swap_reloca_out (output_bfd, &outrel,
   9325  1.3  christos 						     (bfd_byte *) srel);
   9326  1.3  christos 			  break;
   9327  1.3  christos 			}
   9328  1.3  christos 		    }
   9329  1.3  christos 		}
   9330  1.3  christos 	    }
   9331  1.3  christos 	  else
   9332  1.3  christos 	    rel = NULL;
   9333  1.3  christos 
   9334  1.3  christos 	  if ((insn & (0x3fu << 26)) == (16u << 26) /* bc */
   9335  1.3  christos 	      && (insn & 2) == 0 /* relative */)
   9336  1.3  christos 	    {
   9337  1.3  christos 	      bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
   9338  1.3  christos 
   9339  1.3  christos 	      delta += offset - patch_off;
   9340  1.3  christos 	      if (bfd_link_relocatable (info) && rel != NULL)
   9341  1.3  christos 		delta = 0;
   9342  1.3  christos 	      if (!bfd_link_relocatable (info) && rel != NULL)
   9343  1.3  christos 		{
   9344  1.3  christos 		  enum elf_ppc_reloc_type r_type;
   9345  1.3  christos 
   9346  1.3  christos 		  r_type = ELF32_R_TYPE (relend[-1].r_info);
   9347  1.3  christos 		  if (r_type == R_PPC_REL14_BRTAKEN)
   9348  1.3  christos 		    insn |= BRANCH_PREDICT_BIT;
   9349  1.3  christos 		  else if (r_type == R_PPC_REL14_BRNTAKEN)
   9350  1.3  christos 		    insn &= ~BRANCH_PREDICT_BIT;
   9351  1.3  christos 		  else
   9352  1.3  christos 		    BFD_ASSERT (r_type == R_PPC_REL14);
   9353  1.3  christos 
   9354  1.3  christos 		  if ((r_type == R_PPC_REL14_BRTAKEN
   9355  1.3  christos 		       || r_type == R_PPC_REL14_BRNTAKEN)
   9356  1.3  christos 		      && delta + 0x8000 < 0x10000
   9357  1.3  christos 		      && (bfd_signed_vma) delta < 0)
   9358  1.3  christos 		    insn ^= BRANCH_PREDICT_BIT;
   9359  1.3  christos 		}
   9360  1.3  christos 	      if (delta + 0x8000 < 0x10000)
   9361  1.3  christos 		{
   9362  1.3  christos 		  bfd_put_32 (input_bfd,
   9363  1.3  christos 			      (insn & ~0xfffc) | (delta & 0xfffc),
   9364  1.3  christos 			      contents + patch_off);
   9365  1.3  christos 		  patch_off += 4;
   9366  1.3  christos 		  bfd_put_32 (input_bfd,
   9367  1.3  christos 			      B | ((offset + 4 - patch_off) & 0x3fffffc),
   9368  1.3  christos 			      contents + patch_off);
   9369  1.3  christos 		  patch_off += 4;
   9370  1.3  christos 		}
   9371  1.3  christos 	      else
   9372  1.3  christos 		{
   9373  1.3  christos 		  if (rel != NULL)
   9374  1.3  christos 		    {
   9375  1.3  christos 		      unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
   9376  1.3  christos 
   9377  1.3  christos 		      relend[-1].r_offset += 8;
   9378  1.3  christos 		      relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
   9379  1.3  christos 		    }
   9380  1.3  christos 		  bfd_put_32 (input_bfd,
   9381  1.3  christos 			      (insn & ~0xfffc) | 8,
   9382  1.3  christos 			      contents + patch_off);
   9383  1.3  christos 		  patch_off += 4;
   9384  1.3  christos 		  bfd_put_32 (input_bfd,
   9385  1.3  christos 			      B | ((offset + 4 - patch_off) & 0x3fffffc),
   9386  1.3  christos 			      contents + patch_off);
   9387  1.3  christos 		  patch_off += 4;
   9388  1.3  christos 		  bfd_put_32 (input_bfd,
   9389  1.3  christos 			      B | ((delta - 8) & 0x3fffffc),
   9390  1.3  christos 			      contents + patch_off);
   9391  1.3  christos 		  patch_off += 4;
   9392  1.1  christos 		}
   9393  1.1  christos 	    }
   9394  1.1  christos 	  else
   9395  1.7  christos 	    {
   9396  1.1  christos 	      bfd_put_32 (input_bfd, insn, contents + patch_off);
   9397  1.1  christos 	      patch_off += 4;
   9398  1.7  christos 	      bfd_put_32 (input_bfd,
   9399  1.1  christos 			  B | ((offset + 4 - patch_off) & 0x3fffffc),
   9400  1.7  christos 			  contents + patch_off);
   9401  1.7  christos 	      patch_off += 4;
   9402  1.1  christos 	    }
   9403  1.1  christos 	  BFD_ASSERT (patch_off <= input_section->size);
   9404  1.1  christos 	  relax_info->workaround_size = input_section->size - patch_off;
   9405  1.1  christos 	}
   9406  1.1  christos     }
   9407  1.1  christos 
   9408  1.1  christos   return ret;
   9409  1.1  christos }
   9410  1.1  christos 
   9411  1.1  christos /* Write out the PLT relocs and entries for H.  */
   9413  1.1  christos 
   9414  1.7  christos static bfd_boolean
   9415  1.7  christos write_global_sym_plt (struct elf_link_hash_entry *h, void *inf)
   9416  1.1  christos {
   9417  1.1  christos   struct bfd_link_info *info = (struct bfd_link_info *) inf;
   9418  1.1  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9419  1.1  christos   struct plt_entry *ent;
   9420  1.1  christos   bfd_boolean doneone;
   9421  1.1  christos 
   9422  1.1  christos   doneone = FALSE;
   9423  1.1  christos   for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   9424  1.1  christos     if (ent->plt.offset != (bfd_vma) -1)
   9425  1.1  christos       {
   9426  1.1  christos 	if (!doneone)
   9427  1.1  christos 	  {
   9428  1.1  christos 	    Elf_Internal_Rela rela;
   9429  1.1  christos 	    bfd_byte *loc;
   9430  1.1  christos 	    bfd_vma reloc_index;
   9431  1.1  christos 	    asection *plt = htab->elf.splt;
   9432  1.1  christos 	    asection *relplt = htab->elf.srelplt;
   9433  1.1  christos 
   9434  1.1  christos 	    if (htab->plt_type == PLT_NEW
   9435  1.1  christos 		|| !htab->elf.dynamic_sections_created
   9436  1.1  christos 		|| h->dynindx == -1)
   9437  1.1  christos 	      reloc_index = ent->plt.offset / 4;
   9438  1.1  christos 	    else
   9439  1.1  christos 	      {
   9440  1.1  christos 		reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
   9441  1.1  christos 			       / htab->plt_slot_size);
   9442  1.1  christos 		if (reloc_index > PLT_NUM_SINGLE_ENTRIES
   9443  1.3  christos 		    && htab->plt_type == PLT_OLD)
   9444  1.1  christos 		  reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
   9445  1.1  christos 	      }
   9446  1.1  christos 
   9447  1.3  christos 	    /* This symbol has an entry in the procedure linkage table.
   9448  1.1  christos 	       Set it up.  */
   9449  1.7  christos 	    if (htab->plt_type == PLT_VXWORKS
   9450  1.1  christos 		&& htab->elf.dynamic_sections_created
   9451  1.7  christos 		&& h->dynindx != -1)
   9452  1.7  christos 	      {
   9453  1.1  christos 		bfd_vma got_offset;
   9454  1.7  christos 		const bfd_vma *plt_entry;
   9455  1.1  christos 
   9456  1.1  christos 		/* The first three entries in .got.plt are reserved.  */
   9457  1.1  christos 		got_offset = (reloc_index + 3) * 4;
   9458  1.1  christos 
   9459  1.1  christos 		/* Use the right PLT. */
   9460  1.7  christos 		plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
   9461  1.1  christos 			    : ppc_elf_vxworks_plt_entry;
   9462  1.7  christos 
   9463  1.7  christos 		/* Fill in the .plt on VxWorks.  */
   9464  1.1  christos 		if (bfd_link_pic (info))
   9465  1.7  christos 		  {
   9466  1.1  christos 		    bfd_put_32 (info->output_bfd,
   9467  1.1  christos 				plt_entry[0] | PPC_HA (got_offset),
   9468  1.7  christos 				plt->contents + ent->plt.offset + 0);
   9469  1.7  christos 		    bfd_put_32 (info->output_bfd,
   9470  1.7  christos 				plt_entry[1] | PPC_LO (got_offset),
   9471  1.7  christos 				plt->contents + ent->plt.offset + 4);
   9472  1.1  christos 		  }
   9473  1.1  christos 		else
   9474  1.1  christos 		  {
   9475  1.1  christos 		    bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
   9476  1.1  christos 
   9477  1.1  christos 		    bfd_put_32 (info->output_bfd,
   9478  1.1  christos 				plt_entry[0] | PPC_HA (got_loc),
   9479  1.7  christos 				plt->contents + ent->plt.offset + 0);
   9480  1.1  christos 		    bfd_put_32 (info->output_bfd,
   9481  1.7  christos 				plt_entry[1] | PPC_LO (got_loc),
   9482  1.1  christos 				plt->contents + ent->plt.offset + 4);
   9483  1.1  christos 		  }
   9484  1.1  christos 
   9485  1.1  christos 		bfd_put_32 (info->output_bfd, plt_entry[2],
   9486  1.1  christos 			    plt->contents + ent->plt.offset + 8);
   9487  1.1  christos 		bfd_put_32 (info->output_bfd, plt_entry[3],
   9488  1.7  christos 			    plt->contents + ent->plt.offset + 12);
   9489  1.1  christos 
   9490  1.1  christos 		/* This instruction is an immediate load.  The value loaded is
   9491  1.7  christos 		   the byte offset of the R_PPC_JMP_SLOT relocation from the
   9492  1.7  christos 		   start of the .rela.plt section.  The value is stored in the
   9493  1.7  christos 		   low-order 16 bits of the load instruction.  */
   9494  1.7  christos 		/* NOTE: It appears that this is now an index rather than a
   9495  1.7  christos 		   prescaled offset.  */
   9496  1.1  christos 		bfd_put_32 (info->output_bfd,
   9497  1.1  christos 			    plt_entry[4] | reloc_index,
   9498  1.1  christos 			    plt->contents + ent->plt.offset + 16);
   9499  1.1  christos 		/* This instruction is a PC-relative branch whose target is
   9500  1.7  christos 		   the start of the PLT section.  The address of this branch
   9501  1.7  christos 		   instruction is 20 bytes beyond the start of this PLT entry.
   9502  1.7  christos 		   The address is encoded in bits 6-29, inclusive.  The value
   9503  1.7  christos 		   stored is right-shifted by two bits, permitting a 26-bit
   9504  1.1  christos 		   offset.  */
   9505  1.3  christos 		bfd_put_32 (info->output_bfd,
   9506  1.1  christos 			    (plt_entry[5]
   9507  1.1  christos 			     | (-(ent->plt.offset + 20) & 0x03fffffc)),
   9508  1.1  christos 			    plt->contents + ent->plt.offset + 20);
   9509  1.1  christos 		bfd_put_32 (info->output_bfd, plt_entry[6],
   9510  1.1  christos 			    plt->contents + ent->plt.offset + 24);
   9511  1.1  christos 		bfd_put_32 (info->output_bfd, plt_entry[7],
   9512  1.1  christos 			    plt->contents + ent->plt.offset + 28);
   9513  1.1  christos 
   9514  1.7  christos 		/* Fill in the GOT entry corresponding to this PLT slot with
   9515  1.7  christos 		   the address immediately after the "bctr" instruction
   9516  1.1  christos 		   in this PLT entry.  */
   9517  1.1  christos 		bfd_put_32 (info->output_bfd, (plt->output_section->vma
   9518  1.1  christos 					       + plt->output_offset
   9519  1.1  christos 					       + ent->plt.offset + 16),
   9520  1.7  christos 			    htab->elf.sgotplt->contents + got_offset);
   9521  1.1  christos 
   9522  1.1  christos 		if (!bfd_link_pic (info))
   9523  1.1  christos 		  {
   9524  1.7  christos 		    /* Fill in a couple of entries in .rela.plt.unloaded.  */
   9525  1.7  christos 		    loc = htab->srelplt2->contents
   9526  1.1  christos 		      + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
   9527  1.1  christos 			  * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
   9528  1.1  christos 			 * sizeof (Elf32_External_Rela));
   9529  1.1  christos 
   9530  1.7  christos 		    /* Provide the @ha relocation for the first instruction.  */
   9531  1.1  christos 		    rela.r_offset = (plt->output_section->vma
   9532  1.1  christos 				     + plt->output_offset
   9533  1.1  christos 				     + ent->plt.offset + 2);
   9534  1.1  christos 		    rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
   9535  1.7  christos 						R_PPC_ADDR16_HA);
   9536  1.7  christos 		    rela.r_addend = got_offset;
   9537  1.1  christos 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9538  1.1  christos 		    loc += sizeof (Elf32_External_Rela);
   9539  1.1  christos 
   9540  1.1  christos 		    /* Provide the @l relocation for the second instruction.  */
   9541  1.7  christos 		    rela.r_offset = (plt->output_section->vma
   9542  1.1  christos 				     + plt->output_offset
   9543  1.1  christos 				     + ent->plt.offset + 6);
   9544  1.1  christos 		    rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
   9545  1.1  christos 						R_PPC_ADDR16_LO);
   9546  1.1  christos 		    rela.r_addend = got_offset;
   9547  1.1  christos 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9548  1.1  christos 		    loc += sizeof (Elf32_External_Rela);
   9549  1.7  christos 
   9550  1.7  christos 		    /* Provide a relocation for the GOT entry corresponding to this
   9551  1.1  christos 		       PLT slot.  Point it at the middle of the .plt entry.  */
   9552  1.7  christos 		    rela.r_offset = (htab->elf.sgotplt->output_section->vma
   9553  1.1  christos 				     + htab->elf.sgotplt->output_offset
   9554  1.1  christos 				     + got_offset);
   9555  1.1  christos 		    rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
   9556  1.7  christos 						R_PPC_ADDR32);
   9557  1.1  christos 		    rela.r_addend = ent->plt.offset + 16;
   9558  1.1  christos 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9559  1.7  christos 		  }
   9560  1.7  christos 
   9561  1.7  christos 		/* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
   9562  1.7  christos 		   In particular, the offset for the relocation is not the
   9563  1.7  christos 		   address of the PLT entry for this function, as specified
   9564  1.7  christos 		   by the ABI.  Instead, the offset is set to the address of
   9565  1.7  christos 		   the GOT slot for this function.  See EABI 4.4.4.1.  */
   9566  1.7  christos 		rela.r_offset = (htab->elf.sgotplt->output_section->vma
   9567  1.7  christos 				 + htab->elf.sgotplt->output_offset
   9568  1.7  christos 				 + got_offset);
   9569  1.7  christos 		rela.r_addend = 0;
   9570  1.7  christos 	      }
   9571  1.7  christos 	    else
   9572  1.7  christos 	      {
   9573  1.7  christos 		rela.r_addend = 0;
   9574  1.7  christos 		if (!htab->elf.dynamic_sections_created
   9575  1.1  christos 		    || h->dynindx == -1)
   9576  1.7  christos 		  {
   9577  1.1  christos 		    if (h->type == STT_GNU_IFUNC)
   9578  1.7  christos 		      {
   9579  1.7  christos 			plt = htab->elf.iplt;
   9580  1.1  christos 			relplt = htab->elf.irelplt;
   9581  1.1  christos 		      }
   9582  1.1  christos 		    else
   9583  1.7  christos 		      {
   9584  1.7  christos 			plt = htab->pltlocal;
   9585  1.7  christos 			relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
   9586  1.7  christos 		      }
   9587  1.7  christos 		    if (h->def_regular
   9588  1.7  christos 			&& (h->root.type == bfd_link_hash_defined
   9589  1.7  christos 			    || h->root.type == bfd_link_hash_defweak))
   9590  1.7  christos 		      rela.r_addend = SYM_VAL (h);
   9591  1.7  christos 		  }
   9592  1.7  christos 
   9593  1.7  christos 		if (relplt == NULL)
   9594  1.7  christos 		  {
   9595  1.7  christos 		    loc = plt->contents + ent->plt.offset;
   9596  1.7  christos 		    bfd_put_32 (info->output_bfd, rela.r_addend, loc);
   9597  1.7  christos 		  }
   9598  1.7  christos 		else
   9599  1.7  christos 		  {
   9600  1.7  christos 		    rela.r_offset = (plt->output_section->vma
   9601  1.7  christos 				     + plt->output_offset
   9602  1.1  christos 				     + ent->plt.offset);
   9603  1.1  christos 
   9604  1.1  christos 		    if (htab->plt_type == PLT_OLD
   9605  1.7  christos 			|| !htab->elf.dynamic_sections_created
   9606  1.1  christos 			|| h->dynindx == -1)
   9607  1.7  christos 		      {
   9608  1.7  christos 			/* We don't need to fill in the .plt.  The ppc dynamic
   9609  1.7  christos 			   linker will fill it in.  */
   9610  1.7  christos 		      }
   9611  1.7  christos 		    else
   9612  1.7  christos 		      {
   9613  1.7  christos 			bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
   9614  1.7  christos 				       + htab->glink->output_section->vma
   9615  1.7  christos 				       + htab->glink->output_offset);
   9616  1.7  christos 			bfd_put_32 (info->output_bfd, val,
   9617  1.7  christos 				    plt->contents + ent->plt.offset);
   9618  1.7  christos 		      }
   9619  1.7  christos 		  }
   9620  1.1  christos 	      }
   9621  1.7  christos 
   9622  1.7  christos 	    if (relplt != NULL)
   9623  1.7  christos 	      {
   9624  1.7  christos 		/* Fill in the entry in the .rela.plt section.  */
   9625  1.7  christos 		if (!htab->elf.dynamic_sections_created
   9626  1.1  christos 		    || h->dynindx == -1)
   9627  1.7  christos 		  {
   9628  1.1  christos 		    if (h->type == STT_GNU_IFUNC)
   9629  1.1  christos 		      rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   9630  1.1  christos 		    else
   9631  1.1  christos 		      rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   9632  1.1  christos 		    loc = relplt->contents + (relplt->reloc_count++
   9633  1.1  christos 					      * sizeof (Elf32_External_Rela));
   9634  1.1  christos 		    htab->local_ifunc_resolver = 1;
   9635  1.1  christos 		  }
   9636  1.1  christos 		else
   9637  1.7  christos 		  {
   9638  1.7  christos 		    rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
   9639  1.1  christos 		    loc = relplt->contents + (reloc_index
   9640  1.1  christos 					      * sizeof (Elf32_External_Rela));
   9641  1.1  christos 		    if (h->type == STT_GNU_IFUNC && is_static_defined (h))
   9642  1.7  christos 		      htab->maybe_local_ifunc_resolver = 1;
   9643  1.7  christos 		  }
   9644  1.7  christos 		bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9645  1.7  christos 	      }
   9646  1.1  christos 	    doneone = TRUE;
   9647  1.1  christos 	  }
   9648  1.7  christos 
   9649  1.7  christos 	if (htab->plt_type == PLT_NEW
   9650  1.1  christos 	    || !htab->elf.dynamic_sections_created
   9651  1.3  christos 	    || h->dynindx == -1)
   9652  1.1  christos 	  {
   9653  1.1  christos 	    unsigned char *p;
   9654  1.1  christos 	    asection *plt = htab->elf.splt;
   9655  1.1  christos 
   9656  1.1  christos 	    if (!htab->elf.dynamic_sections_created
   9657  1.1  christos 		|| h->dynindx == -1)
   9658  1.7  christos 	      {
   9659  1.7  christos 		if (h->type == STT_GNU_IFUNC)
   9660  1.7  christos 		  plt = htab->elf.iplt;
   9661  1.7  christos 		else
   9662  1.7  christos 		  break;
   9663  1.7  christos 	      }
   9664  1.7  christos 
   9665  1.7  christos 	    p = (unsigned char *) htab->glink->contents + ent->glink_offset;
   9666  1.7  christos 	    write_glink_stub (h, ent, plt, p, info);
   9667  1.7  christos 
   9668  1.7  christos 	    if (!bfd_link_pic (info))
   9669  1.7  christos 	      /* We only need one non-PIC glink stub.  */
   9670  1.7  christos 	      break;
   9671  1.7  christos 	  }
   9672  1.7  christos 	else
   9673  1.7  christos 	  break;
   9674  1.7  christos       }
   9675  1.7  christos   return TRUE;
   9676  1.7  christos }
   9677  1.7  christos 
   9678  1.7  christos /* Finish up PLT handling.  */
   9679  1.7  christos 
   9680  1.7  christos bfd_boolean
   9681  1.7  christos ppc_finish_symbols (struct bfd_link_info *info)
   9682  1.7  christos {
   9683  1.7  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9684  1.7  christos   bfd *ibfd;
   9685  1.7  christos 
   9686  1.7  christos   if (!htab)
   9687  1.7  christos     return TRUE;
   9688  1.7  christos 
   9689  1.7  christos   elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info);
   9690  1.7  christos 
   9691  1.7  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   9692  1.7  christos     {
   9693  1.7  christos       bfd_vma *local_got, *end_local_got;
   9694  1.7  christos       struct plt_entry **local_plt, **lplt, **end_local_plt;
   9695  1.7  christos       Elf_Internal_Shdr *symtab_hdr;
   9696  1.7  christos       bfd_size_type locsymcount;
   9697  1.7  christos       Elf_Internal_Sym *local_syms = NULL;
   9698  1.7  christos       struct plt_entry *ent;
   9699  1.7  christos 
   9700  1.7  christos       if (!is_ppc_elf (ibfd))
   9701  1.7  christos 	continue;
   9702  1.7  christos 
   9703  1.7  christos       local_got = elf_local_got_offsets (ibfd);
   9704  1.7  christos       if (!local_got)
   9705  1.7  christos 	continue;
   9706  1.9  christos 
   9707  1.7  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   9708  1.7  christos       locsymcount = symtab_hdr->sh_info;
   9709  1.7  christos       end_local_got = local_got + locsymcount;
   9710  1.7  christos       local_plt = (struct plt_entry **) end_local_got;
   9711  1.7  christos       end_local_plt = local_plt + locsymcount;
   9712  1.7  christos       for (lplt = local_plt; lplt < end_local_plt; ++lplt)
   9713  1.7  christos 	for (ent = *lplt; ent != NULL; ent = ent->next)
   9714  1.7  christos 	  {
   9715  1.7  christos 	    if (ent->plt.offset != (bfd_vma) -1)
   9716  1.7  christos 	      {
   9717  1.7  christos 		Elf_Internal_Sym *sym;
   9718  1.7  christos 		asection *sym_sec;
   9719  1.7  christos 		asection *plt, *relplt;
   9720  1.7  christos 		bfd_byte *loc;
   9721  1.7  christos 		bfd_vma val;
   9722  1.7  christos 		Elf_Internal_Rela rela;
   9723  1.7  christos 		unsigned char *p;
   9724  1.7  christos 
   9725  1.7  christos 		if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
   9726  1.7  christos 				lplt - local_plt, ibfd))
   9727  1.7  christos 		  {
   9728  1.7  christos 		    if (local_syms != NULL
   9729  1.7  christos 			&& symtab_hdr->contents != (unsigned char *) local_syms)
   9730  1.7  christos 		      free (local_syms);
   9731  1.7  christos 		    return FALSE;
   9732  1.7  christos 		  }
   9733  1.7  christos 
   9734  1.7  christos 		val = sym->st_value;
   9735  1.7  christos 		if (sym_sec != NULL && sym_sec->output_section != NULL)
   9736  1.7  christos 		  val += sym_sec->output_offset + sym_sec->output_section->vma;
   9737  1.7  christos 
   9738  1.7  christos 		if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   9739  1.7  christos 		  {
   9740  1.7  christos 		    htab->local_ifunc_resolver = 1;
   9741  1.7  christos 		    plt = htab->elf.iplt;
   9742  1.7  christos 		    relplt = htab->elf.irelplt;
   9743  1.7  christos 		    rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   9744  1.7  christos 		  }
   9745  1.7  christos 		else
   9746  1.7  christos 		  {
   9747  1.7  christos 		    plt = htab->pltlocal;
   9748  1.7  christos 		    if (bfd_link_pic (info))
   9749  1.7  christos 		      {
   9750  1.7  christos 			relplt = htab->relpltlocal;
   9751  1.7  christos 			rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   9752  1.9  christos 		      }
   9753  1.7  christos 		    else
   9754  1.7  christos 		      {
   9755  1.7  christos 			loc = plt->contents + ent->plt.offset;
   9756  1.7  christos 			bfd_put_32 (info->output_bfd, val, loc);
   9757  1.7  christos 			continue;
   9758  1.7  christos 		      }
   9759  1.7  christos 		  }
   9760  1.7  christos 
   9761  1.7  christos 		rela.r_offset = (ent->plt.offset
   9762  1.7  christos 				 + plt->output_offset
   9763  1.7  christos 				 + plt->output_section->vma);
   9764  1.7  christos 		rela.r_addend = val;
   9765  1.7  christos 		loc = relplt->contents + (relplt->reloc_count++
   9766  1.7  christos 					  * sizeof (Elf32_External_Rela));
   9767  1.7  christos 		bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9768  1.7  christos 
   9769  1.7  christos 		p = (unsigned char *) htab->glink->contents + ent->glink_offset;
   9770  1.7  christos 		write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
   9771  1.7  christos 	      }
   9772  1.7  christos 	  }
   9773  1.7  christos 
   9774  1.7  christos       if (local_syms != NULL
   9775  1.7  christos 	  && symtab_hdr->contents != (unsigned char *) local_syms)
   9776  1.7  christos 	{
   9777  1.7  christos 	  if (!info->keep_memory)
   9778  1.7  christos 	    free (local_syms);
   9779  1.7  christos 	  else
   9780  1.7  christos 	    symtab_hdr->contents = (unsigned char *) local_syms;
   9781  1.7  christos 	}
   9782  1.7  christos     }
   9783  1.7  christos   return TRUE;
   9784  1.7  christos }
   9785  1.7  christos 
   9786  1.7  christos /* Finish up dynamic symbol handling.  We set the contents of various
   9787  1.7  christos    dynamic sections here.  */
   9788  1.7  christos 
   9789  1.7  christos static bfd_boolean
   9790  1.7  christos ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
   9791  1.7  christos 			       struct bfd_link_info *info,
   9792  1.7  christos 			       struct elf_link_hash_entry *h,
   9793  1.7  christos 			       Elf_Internal_Sym *sym)
   9794  1.7  christos {
   9795  1.7  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9796  1.7  christos   struct plt_entry *ent;
   9797  1.7  christos 
   9798  1.7  christos #ifdef DEBUG
   9799  1.7  christos   fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
   9800  1.7  christos 	   h->root.root.string);
   9801  1.7  christos #endif
   9802  1.7  christos 
   9803  1.7  christos   if (!h->def_regular
   9804  1.7  christos       || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info)))
   9805  1.7  christos     for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   9806  1.7  christos       if (ent->plt.offset != (bfd_vma) -1)
   9807  1.7  christos 	{
   9808  1.7  christos 	  if (!h->def_regular)
   9809  1.7  christos 	    {
   9810  1.7  christos 	      /* Mark the symbol as undefined, rather than as
   9811  1.7  christos 		 defined in the .plt section.  Leave the value if
   9812  1.7  christos 		 there were any relocations where pointer equality
   9813  1.7  christos 		 matters (this is a clue for the dynamic linker, to
   9814  1.7  christos 		 make function pointer comparisons work between an
   9815  1.7  christos 		 application and shared library), otherwise set it
   9816  1.7  christos 		 to zero.  */
   9817  1.7  christos 	      sym->st_shndx = SHN_UNDEF;
   9818  1.7  christos 	      if (!h->pointer_equality_needed)
   9819  1.7  christos 		sym->st_value = 0;
   9820  1.7  christos 	      else if (!h->ref_regular_nonweak)
   9821  1.7  christos 		{
   9822  1.7  christos 		  /* This breaks function pointer comparisons, but
   9823  1.7  christos 		     that is better than breaking tests for a NULL
   9824  1.7  christos 		     function pointer.  */
   9825  1.7  christos 		  sym->st_value = 0;
   9826  1.7  christos 		}
   9827  1.7  christos 	    }
   9828  1.7  christos 	  else
   9829  1.1  christos 	    {
   9830  1.1  christos 	      /* Set the value of ifunc symbols in a non-pie
   9831  1.1  christos 		 executable to the glink entry.  This is to avoid
   9832  1.1  christos 		 text relocations.  We can't do this for ifunc in
   9833  1.1  christos 		 allocate_dynrelocs, as we do for normal dynamic
   9834  1.1  christos 		 function symbols with plt entries, because we need
   9835  1.1  christos 		 to keep the original value around for the ifunc
   9836  1.1  christos 		 relocation.  */
   9837  1.1  christos 	      sym->st_shndx
   9838  1.1  christos 		= (_bfd_elf_section_from_bfd_section
   9839  1.1  christos 		   (info->output_bfd, htab->glink->output_section));
   9840  1.1  christos 	      sym->st_value = (ent->glink_offset
   9841  1.1  christos 			       + htab->glink->output_offset
   9842  1.1  christos 			       + htab->glink->output_section->vma);
   9843  1.1  christos 	    }
   9844  1.1  christos 	  break;
   9845  1.1  christos 	}
   9846  1.7  christos 
   9847  1.7  christos   if (h->needs_copy)
   9848  1.1  christos     {
   9849  1.7  christos       asection *s;
   9850  1.1  christos       Elf_Internal_Rela rela;
   9851  1.1  christos       bfd_byte *loc;
   9852  1.1  christos 
   9853  1.1  christos       /* This symbols needs a copy reloc.  Set it up.  */
   9854  1.1  christos 
   9855  1.1  christos #ifdef DEBUG
   9856  1.1  christos       fprintf (stderr, ", copy");
   9857  1.1  christos #endif
   9858  1.1  christos 
   9859  1.1  christos       BFD_ASSERT (h->dynindx != -1);
   9860  1.1  christos 
   9861  1.1  christos       if (ppc_elf_hash_entry (h)->has_sda_refs)
   9862  1.1  christos 	s = htab->relsbss;
   9863  1.1  christos       else if (h->root.u.def.section == htab->elf.sdynrelro)
   9864  1.1  christos 	s = htab->elf.sreldynrelro;
   9865  1.1  christos       else
   9866  1.1  christos 	s = htab->elf.srelbss;
   9867  1.3  christos       BFD_ASSERT (s != NULL);
   9868  1.3  christos 
   9869  1.3  christos       rela.r_offset = SYM_VAL (h);
   9870  1.1  christos       rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
   9871  1.3  christos       rela.r_addend = 0;
   9872  1.3  christos       loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
   9873  1.7  christos       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   9874  1.3  christos     }
   9875  1.3  christos 
   9876  1.1  christos #ifdef DEBUG
   9877  1.1  christos   fprintf (stderr, "\n");
   9878  1.1  christos #endif
   9879  1.1  christos 
   9880  1.1  christos   return TRUE;
   9881  1.1  christos }
   9882  1.1  christos 
   9883  1.1  christos static enum elf_reloc_type_class
   9885  1.1  christos ppc_elf_reloc_type_class (const struct bfd_link_info *info,
   9886  1.1  christos 			  const asection *rel_sec,
   9887  1.1  christos 			  const Elf_Internal_Rela *rela)
   9888  1.1  christos {
   9889  1.1  christos   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9890  1.1  christos 
   9891  1.1  christos   if (rel_sec == htab->elf.irelplt)
   9892  1.1  christos     return reloc_class_ifunc;
   9893  1.1  christos 
   9894  1.1  christos   switch (ELF32_R_TYPE (rela->r_info))
   9895  1.1  christos     {
   9896  1.1  christos     case R_PPC_RELATIVE:
   9897  1.1  christos       return reloc_class_relative;
   9898  1.1  christos     case R_PPC_JMP_SLOT:
   9899  1.1  christos       return reloc_class_plt;
   9900  1.1  christos     case R_PPC_COPY:
   9901  1.1  christos       return reloc_class_copy;
   9902  1.1  christos     default:
   9903  1.1  christos       return reloc_class_normal;
   9904  1.1  christos     }
   9905  1.1  christos }
   9906  1.7  christos 
   9907  1.1  christos /* Finish up the dynamic sections.  */
   9909  1.1  christos 
   9910  1.1  christos static bfd_boolean
   9911  1.1  christos ppc_elf_finish_dynamic_sections (bfd *output_bfd,
   9912  1.1  christos 				 struct bfd_link_info *info)
   9913  1.1  christos {
   9914  1.1  christos   asection *sdyn;
   9915  1.1  christos   struct ppc_elf_link_hash_table *htab;
   9916  1.1  christos   bfd_vma got;
   9917  1.7  christos   bfd *dynobj;
   9918  1.1  christos   bfd_boolean ret = TRUE;
   9919  1.1  christos 
   9920  1.1  christos #ifdef DEBUG
   9921  1.1  christos   fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
   9922  1.1  christos #endif
   9923  1.1  christos 
   9924  1.1  christos   htab = ppc_elf_hash_table (info);
   9925  1.1  christos   dynobj = htab->elf.dynobj;
   9926  1.1  christos   sdyn = bfd_get_linker_section (dynobj, ".dynamic");
   9927  1.1  christos 
   9928  1.1  christos   got = 0;
   9929  1.1  christos   if (htab->elf.hgot != NULL)
   9930  1.1  christos     got = SYM_VAL (htab->elf.hgot);
   9931  1.1  christos 
   9932  1.7  christos   if (htab->elf.dynamic_sections_created)
   9933  1.1  christos     {
   9934  1.7  christos       Elf32_External_Dyn *dyncon, *dynconend;
   9935  1.1  christos 
   9936  1.1  christos       BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
   9937  1.1  christos 
   9938  1.1  christos       dyncon = (Elf32_External_Dyn *) sdyn->contents;
   9939  1.7  christos       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
   9940  1.1  christos       for (; dyncon < dynconend; dyncon++)
   9941  1.1  christos 	{
   9942  1.1  christos 	  Elf_Internal_Dyn dyn;
   9943  1.7  christos 	  asection *s;
   9944  1.1  christos 
   9945  1.1  christos 	  bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
   9946  1.1  christos 
   9947  1.1  christos 	  switch (dyn.d_tag)
   9948  1.1  christos 	    {
   9949  1.1  christos 	    case DT_PLTGOT:
   9950  1.1  christos 	      if (htab->is_vxworks)
   9951  1.7  christos 		s = htab->elf.sgotplt;
   9952  1.7  christos 	      else
   9953  1.7  christos 		s = htab->elf.splt;
   9954  1.7  christos 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   9955  1.7  christos 	      break;
   9956  1.7  christos 
   9957  1.7  christos 	    case DT_PLTRELSZ:
   9958  1.7  christos 	      dyn.d_un.d_val = htab->elf.srelplt->size;
   9959  1.7  christos 	      break;
   9960  1.1  christos 
   9961  1.1  christos 	    case DT_JMPREL:
   9962  1.1  christos 	      s = htab->elf.srelplt;
   9963  1.1  christos 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   9964  1.1  christos 	      break;
   9965  1.1  christos 
   9966  1.1  christos 	    case DT_PPC_GOT:
   9967  1.1  christos 	      dyn.d_un.d_ptr = got;
   9968  1.1  christos 	      break;
   9969  1.1  christos 
   9970  1.1  christos 	    case DT_TEXTREL:
   9971  1.1  christos 	      if (htab->local_ifunc_resolver)
   9972  1.1  christos 		info->callbacks->einfo
   9973  1.7  christos 		  (_("%X%P: text relocations and GNU indirect "
   9974  1.7  christos 		     "functions will result in a segfault at runtime\n"));
   9975  1.1  christos 	      else if (htab->maybe_local_ifunc_resolver)
   9976  1.7  christos 		info->callbacks->einfo
   9977  1.7  christos 		  (_("%P: warning: text relocations and GNU indirect "
   9978  1.1  christos 		     "functions may result in a segfault at runtime\n"));
   9979  1.1  christos 	      continue;
   9980  1.1  christos 
   9981  1.1  christos 	    default:
   9982  1.1  christos 	      if (htab->is_vxworks
   9983  1.1  christos 		  && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
   9984  1.1  christos 		break;
   9985  1.1  christos 	      continue;
   9986  1.1  christos 	    }
   9987  1.1  christos 
   9988  1.1  christos 	  bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
   9989  1.1  christos 	}
   9990  1.1  christos     }
   9991  1.1  christos 
   9992  1.1  christos   if (htab->elf.sgot != NULL
   9993  1.1  christos       && htab->elf.sgot->output_section != bfd_abs_section_ptr)
   9994  1.1  christos     {
   9995  1.1  christos       if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
   9996  1.1  christos 	  || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
   9997  1.1  christos 	{
   9998  1.1  christos 	  unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
   9999  1.1  christos 
   10000  1.1  christos 	  p += htab->elf.hgot->root.u.def.value;
   10001  1.1  christos 	  if (htab->plt_type == PLT_OLD)
   10002  1.7  christos 	    {
   10003  1.7  christos 	      /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
   10004  1.7  christos 		 so that a function can easily find the address of
   10005  1.7  christos 		 _GLOBAL_OFFSET_TABLE_.  */
   10006  1.7  christos 	      BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
   10007  1.1  christos 			  < htab->elf.hgot->root.u.def.section->size);
   10008  1.1  christos 	      bfd_put_32 (output_bfd, 0x4e800021, p - 4);
   10009  1.1  christos 	    }
   10010  1.1  christos 
   10011  1.7  christos 	  if (sdyn != NULL)
   10012  1.1  christos 	    {
   10013  1.1  christos 	      bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
   10014  1.1  christos 	      BFD_ASSERT (htab->elf.hgot->root.u.def.value
   10015  1.7  christos 			  < htab->elf.hgot->root.u.def.section->size);
   10016  1.7  christos 	      bfd_put_32 (output_bfd, val, p);
   10017  1.7  christos 	    }
   10018  1.7  christos 	}
   10019  1.1  christos       else
   10020  1.7  christos 	{
   10021  1.1  christos 	  /* xgettext:c-format */
   10022  1.3  christos 	  _bfd_error_handler (_("%s not defined in linker created %pA"),
   10023  1.1  christos 			      htab->elf.hgot->root.root.string,
   10024  1.1  christos 			      (htab->elf.sgotplt != NULL
   10025  1.1  christos 			       ? htab->elf.sgotplt : htab->elf.sgot));
   10026  1.3  christos 	  bfd_set_error (bfd_error_bad_value);
   10027  1.1  christos 	  ret = FALSE;
   10028  1.1  christos 	}
   10029  1.1  christos 
   10030  1.1  christos       elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
   10031  1.1  christos     }
   10032  1.1  christos 
   10033  1.1  christos   /* Fill in the first entry in the VxWorks procedure linkage table.  */
   10034  1.1  christos   if (htab->is_vxworks
   10035  1.1  christos       && htab->elf.splt != NULL
   10036  1.1  christos       && htab->elf.splt->size != 0
   10037  1.1  christos       && htab->elf.splt->output_section != bfd_abs_section_ptr)
   10038  1.1  christos     {
   10039  1.1  christos       asection *splt = htab->elf.splt;
   10040  1.1  christos       /* Use the right PLT. */
   10041  1.1  christos       const bfd_vma *plt_entry = (bfd_link_pic (info)
   10042  1.1  christos 				  ? ppc_elf_vxworks_pic_plt0_entry
   10043  1.1  christos 				  : ppc_elf_vxworks_plt0_entry);
   10044  1.1  christos 
   10045  1.1  christos       if (!bfd_link_pic (info))
   10046  1.1  christos 	{
   10047  1.3  christos 	  bfd_vma got_value = SYM_VAL (htab->elf.hgot);
   10048  1.1  christos 
   10049  1.1  christos 	  bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
   10050  1.1  christos 		      splt->contents +  0);
   10051  1.1  christos 	  bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
   10052  1.1  christos 		      splt->contents +  4);
   10053  1.1  christos 	}
   10054  1.1  christos       else
   10055  1.7  christos 	{
   10056  1.7  christos 	  bfd_put_32 (output_bfd, plt_entry[0], splt->contents +  0);
   10057  1.1  christos 	  bfd_put_32 (output_bfd, plt_entry[1], splt->contents +  4);
   10058  1.1  christos 	}
   10059  1.1  christos       bfd_put_32 (output_bfd, plt_entry[2], splt->contents +  8);
   10060  1.1  christos       bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
   10061  1.1  christos       bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
   10062  1.1  christos       bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
   10063  1.1  christos       bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
   10064  1.7  christos       bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
   10065  1.7  christos 
   10066  1.1  christos       if (! bfd_link_pic (info))
   10067  1.1  christos 	{
   10068  1.1  christos 	  Elf_Internal_Rela rela;
   10069  1.1  christos 	  bfd_byte *loc;
   10070  1.1  christos 
   10071  1.1  christos 	  loc = htab->srelplt2->contents;
   10072  1.1  christos 
   10073  1.1  christos 	  /* Output the @ha relocation for the first instruction.  */
   10074  1.1  christos 	  rela.r_offset = (htab->elf.splt->output_section->vma
   10075  1.1  christos 			   + htab->elf.splt->output_offset
   10076  1.1  christos 			   + 2);
   10077  1.1  christos 	  rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
   10078  1.1  christos 	  rela.r_addend = 0;
   10079  1.1  christos 	  bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   10080  1.1  christos 	  loc += sizeof (Elf32_External_Rela);
   10081  1.1  christos 
   10082  1.1  christos 	  /* Output the @l relocation for the second instruction.  */
   10083  1.1  christos 	  rela.r_offset = (htab->elf.splt->output_section->vma
   10084  1.1  christos 			   + htab->elf.splt->output_offset
   10085  1.1  christos 			   + 6);
   10086  1.1  christos 	  rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
   10087  1.1  christos 	  rela.r_addend = 0;
   10088  1.1  christos 	  bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   10089  1.1  christos 	  loc += sizeof (Elf32_External_Rela);
   10090  1.1  christos 
   10091  1.1  christos 	  /* Fix up the remaining relocations.  They may have the wrong
   10092  1.1  christos 	     symbol index for _G_O_T_ or _P_L_T_ depending on the order
   10093  1.1  christos 	     in which symbols were output.  */
   10094  1.1  christos 	  while (loc < htab->srelplt2->contents + htab->srelplt2->size)
   10095  1.1  christos 	    {
   10096  1.1  christos 	      Elf_Internal_Rela rel;
   10097  1.1  christos 
   10098  1.1  christos 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10099  1.1  christos 	      rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
   10100  1.1  christos 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10101  1.1  christos 	      loc += sizeof (Elf32_External_Rela);
   10102  1.1  christos 
   10103  1.1  christos 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10104  1.1  christos 	      rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
   10105  1.1  christos 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10106  1.1  christos 	      loc += sizeof (Elf32_External_Rela);
   10107  1.1  christos 
   10108  1.1  christos 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10109  1.1  christos 	      rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
   10110  1.1  christos 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10111  1.1  christos 	      loc += sizeof (Elf32_External_Rela);
   10112  1.1  christos 	    }
   10113  1.1  christos 	}
   10114  1.1  christos     }
   10115  1.1  christos 
   10116  1.1  christos   if (htab->glink != NULL
   10117  1.1  christos       && htab->glink->contents != NULL
   10118  1.1  christos       && htab->elf.dynamic_sections_created)
   10119  1.1  christos     {
   10120  1.1  christos       unsigned char *p;
   10121  1.1  christos       unsigned char *endp;
   10122  1.1  christos       bfd_vma res0;
   10123  1.1  christos 
   10124  1.1  christos       /*
   10125  1.1  christos        * PIC glink code is the following:
   10126  1.1  christos        *
   10127  1.1  christos        * # ith PLT code stub.
   10128  1.1  christos        *   addis 11,30,(plt+(i-1)*4-got)@ha
   10129  1.1  christos        *   lwz 11,(plt+(i-1)*4-got)@l(11)
   10130  1.1  christos        *   mtctr 11
   10131  1.1  christos        *   bctr
   10132  1.7  christos        *
   10133  1.1  christos        * # A table of branches, one for each plt entry.
   10134  1.7  christos        * # The idea is that the plt call stub loads ctr and r11 with these
   10135  1.7  christos        * # addresses, so (r11 - res_0) gives the plt index * 4.
   10136  1.1  christos        * res_0:	b PLTresolve
   10137  1.1  christos        * res_1:	b PLTresolve
   10138  1.7  christos        * .
   10139  1.1  christos        * # Some number of entries towards the end can be nops
   10140  1.7  christos        * res_n_m3: nop
   10141  1.1  christos        * res_n_m2: nop
   10142  1.1  christos        * res_n_m1:
   10143  1.1  christos        *
   10144  1.1  christos        * PLTresolve:
   10145  1.1  christos        *    addis 11,11,(1f-res_0)@ha
   10146  1.1  christos        *    mflr 0
   10147  1.1  christos        *    bcl 20,31,1f
   10148  1.1  christos        * 1: addi 11,11,(1b-res_0)@l
   10149  1.1  christos        *    mflr 12
   10150  1.1  christos        *    mtlr 0
   10151  1.1  christos        *    sub 11,11,12		# r11 = index * 4
   10152  1.1  christos        *    addis 12,12,(got+4-1b)@ha
   10153  1.1  christos        *    lwz 0,(got+4-1b)@l(12)	# got[1] address of dl_runtime_resolve
   10154  1.7  christos        *    lwz 12,(got+8-1b)@l(12)	# got[2] contains the map address
   10155  1.7  christos        *    mtctr 0
   10156  1.1  christos        *    add 0,11,11
   10157  1.1  christos        *    add 11,0,11			# r11 = index * 12 = reloc offset.
   10158  1.7  christos        *    bctr
   10159  1.7  christos        *
   10160  1.1  christos        * Non-PIC glink code is a little simpler.
   10161  1.1  christos        *
   10162  1.1  christos        * # ith PLT code stub.
   10163  1.1  christos        *   lis 11,(plt+(i-1)*4)@ha
   10164  1.1  christos        *   lwz 11,(plt+(i-1)*4)@l(11)
   10165  1.1  christos        *   mtctr 11
   10166  1.1  christos        *   bctr
   10167  1.1  christos        *
   10168  1.1  christos        * The branch table is the same, then comes
   10169  1.3  christos        *
   10170  1.1  christos        * PLTresolve:
   10171  1.1  christos        *    lis 12,(got+4)@ha
   10172  1.1  christos        *    addis 11,11,(-res_0)@ha
   10173  1.1  christos        *    lwz 0,(got+4)@l(12)		# got[1] address of dl_runtime_resolve
   10174  1.1  christos        *    addi 11,11,(-res_0)@l	# r11 = index * 4
   10175  1.1  christos        *    mtctr 0
   10176  1.1  christos        *    add 0,11,11
   10177  1.1  christos        *    lwz 12,(got+8)@l(12)	# got[2] contains the map address
   10178  1.1  christos        *    add 11,0,11			# r11 = index * 12 = reloc offset.
   10179  1.1  christos        *    bctr
   10180  1.1  christos        */
   10181  1.1  christos 
   10182  1.1  christos       /* Build the branch table, one for each plt entry (less one),
   10183  1.1  christos 	 and perhaps some padding.  */
   10184  1.3  christos       p = htab->glink->contents;
   10185  1.3  christos       p += htab->glink_pltresolve;
   10186  1.3  christos       endp = htab->glink->contents;
   10187  1.3  christos       endp += htab->glink->size - GLINK_PLTRESOLVE;
   10188  1.3  christos       while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
   10189  1.3  christos 	{
   10190  1.3  christos 	  bfd_put_32 (output_bfd, B + endp - p, p);
   10191  1.3  christos 	  p += 4;
   10192  1.3  christos 	}
   10193  1.3  christos       while (p < endp)
   10194  1.3  christos 	{
   10195  1.3  christos 	  bfd_put_32 (output_bfd, NOP, p);
   10196  1.3  christos 	  p += 4;
   10197  1.3  christos 	}
   10198  1.3  christos 
   10199  1.3  christos       res0 = (htab->glink_pltresolve
   10200  1.3  christos 	      + htab->glink->output_section->vma
   10201  1.3  christos 	      + htab->glink->output_offset);
   10202  1.3  christos 
   10203  1.3  christos       if (htab->params->ppc476_workaround)
   10204  1.3  christos 	{
   10205  1.3  christos 	  /* Ensure that a call stub at the end of a page doesn't
   10206  1.3  christos 	     result in prefetch over the end of the page into the
   10207  1.3  christos 	     glink branch table.  */
   10208  1.3  christos 	  bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   10209  1.3  christos 	  bfd_vma page_addr;
   10210  1.3  christos 	  bfd_vma glink_start = (htab->glink->output_section->vma
   10211  1.3  christos 				 + htab->glink->output_offset);
   10212  1.3  christos 
   10213  1.3  christos 	  for (page_addr = res0 & -pagesize;
   10214  1.3  christos 	       page_addr > glink_start;
   10215  1.3  christos 	       page_addr -= pagesize)
   10216  1.3  christos 	    {
   10217  1.1  christos 	      /* We have a plt call stub that may need fixing.  */
   10218  1.7  christos 	      bfd_byte *loc;
   10219  1.3  christos 	      unsigned int insn;
   10220  1.1  christos 
   10221  1.1  christos 	      loc = htab->glink->contents + page_addr - 4 - glink_start;
   10222  1.1  christos 	      insn = bfd_get_32 (output_bfd, loc);
   10223  1.1  christos 	      if (insn == BCTR)
   10224  1.1  christos 		{
   10225  1.1  christos 		  /* By alignment, we know that there must be at least
   10226  1.1  christos 		     one other call stub before this one.  */
   10227  1.7  christos 		  insn = bfd_get_32 (output_bfd, loc - 16);
   10228  1.7  christos 		  if (insn == BCTR)
   10229  1.7  christos 		    bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
   10230  1.7  christos 		  else
   10231  1.7  christos 		    bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
   10232  1.7  christos 		}
   10233  1.7  christos 	    }
   10234  1.7  christos 	}
   10235  1.7  christos 
   10236  1.7  christos       /* Last comes the PLTresolve stub.  */
   10237  1.7  christos       endp = p + GLINK_PLTRESOLVE;
   10238  1.7  christos       if (bfd_link_pic (info))
   10239  1.7  christos 	{
   10240  1.7  christos 	  bfd_vma bcl;
   10241  1.7  christos 
   10242  1.7  christos 	  bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
   10243  1.1  christos 		 + htab->glink->output_section->vma
   10244  1.1  christos 		 + htab->glink->output_offset);
   10245  1.7  christos 
   10246  1.7  christos 	  bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
   10247  1.7  christos 	  p += 4;
   10248  1.7  christos 	  bfd_put_32 (output_bfd, MFLR_0, p);
   10249  1.1  christos 	  p += 4;
   10250  1.1  christos 	  bfd_put_32 (output_bfd, BCL_20_31, p);
   10251  1.1  christos 	  p += 4;
   10252  1.7  christos 	  bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
   10253  1.7  christos 	  p += 4;
   10254  1.7  christos 	  bfd_put_32 (output_bfd, MFLR_12, p);
   10255  1.7  christos 	  p += 4;
   10256  1.1  christos 	  bfd_put_32 (output_bfd, MTLR_0, p);
   10257  1.7  christos 	  p += 4;
   10258  1.7  christos 	  bfd_put_32 (output_bfd, SUB_11_11_12, p);
   10259  1.7  christos 	  p += 4;
   10260  1.1  christos 	  bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
   10261  1.1  christos 	  p += 4;
   10262  1.1  christos 	  if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
   10263  1.7  christos 	    {
   10264  1.7  christos 	      bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
   10265  1.7  christos 	      p += 4;
   10266  1.7  christos 	      bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
   10267  1.7  christos 	      p += 4;
   10268  1.7  christos 	    }
   10269  1.7  christos 	  else
   10270  1.7  christos 	    {
   10271  1.7  christos 	      bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
   10272  1.7  christos 	      p += 4;
   10273  1.7  christos 	      bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
   10274  1.7  christos 	      p += 4;
   10275  1.7  christos 	    }
   10276  1.7  christos 	  bfd_put_32 (output_bfd, MTCTR_0, p);
   10277  1.7  christos 	  p += 4;
   10278  1.1  christos 	  bfd_put_32 (output_bfd, ADD_0_11_11, p);
   10279  1.7  christos 	}
   10280  1.1  christos       else
   10281  1.7  christos 	{
   10282  1.7  christos 	  bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
   10283  1.7  christos 	  p += 4;
   10284  1.7  christos 	  bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
   10285  1.7  christos 	  p += 4;
   10286  1.7  christos 	  if (PPC_HA (got + 4) == PPC_HA (got + 8))
   10287  1.7  christos 	    bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
   10288  1.7  christos 	  else
   10289  1.7  christos 	    bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
   10290  1.7  christos 	  p += 4;
   10291  1.7  christos 	  bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
   10292  1.7  christos 	  p += 4;
   10293  1.1  christos 	  bfd_put_32 (output_bfd, MTCTR_0, p);
   10294  1.7  christos 	  p += 4;
   10295  1.1  christos 	  bfd_put_32 (output_bfd, ADD_0_11_11, p);
   10296  1.1  christos 	  p += 4;
   10297  1.1  christos 	  if (PPC_HA (got + 4) == PPC_HA (got + 8))
   10298  1.1  christos 	    bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
   10299  1.1  christos 	  else
   10300  1.1  christos 	    bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
   10301  1.1  christos 	}
   10302  1.1  christos       p += 4;
   10303  1.1  christos       bfd_put_32 (output_bfd, ADD_11_0_11, p);
   10304  1.1  christos       p += 4;
   10305  1.1  christos       bfd_put_32 (output_bfd, BCTR, p);
   10306  1.1  christos       p += 4;
   10307  1.1  christos       while (p < endp)
   10308  1.1  christos 	{
   10309  1.1  christos 	  bfd_put_32 (output_bfd,
   10310  1.1  christos 		      htab->params->ppc476_workaround ? BA : NOP, p);
   10311  1.1  christos 	  p += 4;
   10312  1.1  christos 	}
   10313  1.1  christos       BFD_ASSERT (p == endp);
   10314  1.1  christos     }
   10315  1.1  christos 
   10316  1.1  christos   if (htab->glink_eh_frame != NULL
   10317  1.1  christos       && htab->glink_eh_frame->contents != NULL)
   10318  1.1  christos     {
   10319  1.1  christos       unsigned char *p = htab->glink_eh_frame->contents;
   10320  1.1  christos       bfd_vma val;
   10321  1.1  christos 
   10322  1.1  christos       p += sizeof (glink_eh_frame_cie);
   10323  1.1  christos       /* FDE length.  */
   10324  1.1  christos       p += 4;
   10325  1.1  christos       /* CIE pointer.  */
   10326  1.3  christos       p += 4;
   10327  1.1  christos       /* Offset to .glink.  */
   10328  1.3  christos       val = (htab->glink->output_section->vma
   10329  1.1  christos 	     + htab->glink->output_offset);
   10330  1.1  christos       val -= (htab->glink_eh_frame->output_section->vma
   10331  1.1  christos 	      + htab->glink_eh_frame->output_offset);
   10332  1.1  christos       val -= p - htab->glink_eh_frame->contents;
   10333  1.7  christos       bfd_put_32 (htab->elf.dynobj, val, p);
   10334  1.3  christos 
   10335  1.7  christos       if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
   10336  1.1  christos 	  && !_bfd_elf_write_section_eh_frame (output_bfd, info,
   10337  1.1  christos 					       htab->glink_eh_frame,
   10338  1.1  christos 					       htab->glink_eh_frame->contents))
   10339  1.1  christos 	return FALSE;
   10340  1.1  christos     }
   10341  1.1  christos 
   10342  1.1  christos   return ret;
   10343  1.1  christos }
   10344  1.1  christos 
   10345  1.1  christos #define TARGET_LITTLE_SYM	powerpc_elf32_le_vec
   10347  1.7  christos #define TARGET_LITTLE_NAME	"elf32-powerpcle"
   10348  1.1  christos #define TARGET_BIG_SYM		powerpc_elf32_vec
   10349  1.1  christos #define TARGET_BIG_NAME		"elf32-powerpc"
   10350  1.1  christos #define ELF_ARCH		bfd_arch_powerpc
   10351  1.3  christos #define ELF_TARGET_ID		PPC32_ELF_DATA
   10352  1.1  christos #define ELF_MACHINE_CODE	EM_PPC
   10353  1.1  christos #define ELF_MAXPAGESIZE		0x10000
   10354  1.1  christos #define ELF_COMMONPAGESIZE	0x1000
   10355  1.1  christos #define ELF_RELROPAGESIZE	ELF_MAXPAGESIZE
   10356  1.1  christos #define elf_info_to_howto	ppc_elf_info_to_howto
   10357  1.1  christos 
   10358  1.1  christos #ifdef  EM_CYGNUS_POWERPC
   10359  1.1  christos #define ELF_MACHINE_ALT1	EM_CYGNUS_POWERPC
   10360  1.1  christos #endif
   10361  1.1  christos 
   10362  1.1  christos #ifdef EM_PPC_OLD
   10363  1.1  christos #define ELF_MACHINE_ALT2	EM_PPC_OLD
   10364  1.1  christos #endif
   10365  1.1  christos 
   10366  1.1  christos #define elf_backend_plt_not_loaded	1
   10367  1.1  christos #define elf_backend_want_dynrelro	1
   10368  1.7  christos #define elf_backend_can_gc_sections	1
   10369  1.1  christos #define elf_backend_can_refcount	1
   10370  1.1  christos #define elf_backend_rela_normal		1
   10371  1.1  christos #define elf_backend_caches_rawsize	1
   10372  1.1  christos 
   10373  1.1  christos #define bfd_elf32_mkobject			ppc_elf_mkobject
   10374  1.1  christos #define bfd_elf32_bfd_merge_private_bfd_data	ppc_elf_merge_private_bfd_data
   10375  1.1  christos #define bfd_elf32_bfd_relax_section		ppc_elf_relax_section
   10376  1.1  christos #define bfd_elf32_bfd_reloc_type_lookup		ppc_elf_reloc_type_lookup
   10377  1.1  christos #define bfd_elf32_bfd_reloc_name_lookup		ppc_elf_reloc_name_lookup
   10378  1.7  christos #define bfd_elf32_bfd_set_private_flags		ppc_elf_set_private_flags
   10379  1.1  christos #define bfd_elf32_bfd_link_hash_table_create	ppc_elf_link_hash_table_create
   10380  1.1  christos #define bfd_elf32_get_synthetic_symtab		ppc_elf_get_synthetic_symtab
   10381  1.1  christos 
   10382  1.1  christos #define elf_backend_object_p			ppc_elf_object_p
   10383  1.1  christos #define elf_backend_gc_mark_hook		ppc_elf_gc_mark_hook
   10384  1.1  christos #define elf_backend_section_from_shdr		ppc_elf_section_from_shdr
   10385  1.1  christos #define elf_backend_relocate_section		ppc_elf_relocate_section
   10386  1.1  christos #define elf_backend_create_dynamic_sections	ppc_elf_create_dynamic_sections
   10387  1.1  christos #define elf_backend_check_relocs		ppc_elf_check_relocs
   10388  1.1  christos #define elf_backend_relocs_compatible		_bfd_elf_relocs_compatible
   10389  1.1  christos #define elf_backend_copy_indirect_symbol	ppc_elf_copy_indirect_symbol
   10390  1.1  christos #define elf_backend_adjust_dynamic_symbol	ppc_elf_adjust_dynamic_symbol
   10391  1.1  christos #define elf_backend_add_symbol_hook		ppc_elf_add_symbol_hook
   10392  1.1  christos #define elf_backend_size_dynamic_sections	ppc_elf_size_dynamic_sections
   10393  1.1  christos #define elf_backend_hash_symbol			ppc_elf_hash_symbol
   10394  1.1  christos #define elf_backend_finish_dynamic_symbol	ppc_elf_finish_dynamic_symbol
   10395  1.1  christos #define elf_backend_finish_dynamic_sections	ppc_elf_finish_dynamic_sections
   10396  1.1  christos #define elf_backend_fake_sections		ppc_elf_fake_sections
   10397  1.1  christos #define elf_backend_additional_program_headers	ppc_elf_additional_program_headers
   10398  1.1  christos #define elf_backend_modify_segment_map		ppc_elf_modify_segment_map
   10399  1.1  christos #define elf_backend_grok_prstatus		ppc_elf_grok_prstatus
   10400  1.3  christos #define elf_backend_grok_psinfo			ppc_elf_grok_psinfo
   10401  1.1  christos #define elf_backend_write_core_note		ppc_elf_write_core_note
   10402  1.1  christos #define elf_backend_reloc_type_class		ppc_elf_reloc_type_class
   10403  1.1  christos #define elf_backend_begin_write_processing	ppc_elf_begin_write_processing
   10404  1.1  christos #define elf_backend_final_write_processing	ppc_elf_final_write_processing
   10405  1.1  christos #define elf_backend_write_section		ppc_elf_write_section
   10406  1.1  christos #define elf_backend_get_sec_type_attr		ppc_elf_get_sec_type_attr
   10407  1.1  christos #define elf_backend_plt_sym_val			ppc_elf_plt_sym_val
   10408  1.1  christos #define elf_backend_action_discarded		ppc_elf_action_discarded
   10409  1.1  christos #define elf_backend_init_index_section		_bfd_elf_init_1_index_section
   10410  1.1  christos #define elf_backend_lookup_section_flags_hook	ppc_elf_lookup_section_flags
   10411  1.1  christos 
   10412  1.1  christos #include "elf32-target.h"
   10413  1.1  christos 
   10414  1.1  christos /* FreeBSD Target */
   10415  1.1  christos 
   10416  1.1  christos #undef  TARGET_LITTLE_SYM
   10417  1.1  christos #undef  TARGET_LITTLE_NAME
   10418  1.3  christos 
   10419  1.1  christos #undef  TARGET_BIG_SYM
   10420  1.1  christos #define TARGET_BIG_SYM  powerpc_elf32_fbsd_vec
   10421  1.1  christos #undef  TARGET_BIG_NAME
   10422  1.1  christos #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
   10423  1.1  christos 
   10424  1.1  christos #undef  ELF_OSABI
   10425  1.1  christos #define ELF_OSABI	ELFOSABI_FREEBSD
   10426  1.7  christos 
   10427  1.1  christos #undef  elf32_bed
   10428  1.1  christos #define elf32_bed	elf32_powerpc_fbsd_bed
   10429  1.1  christos 
   10430  1.1  christos #include "elf32-target.h"
   10431  1.1  christos 
   10432  1.1  christos /* VxWorks Target */
   10433  1.1  christos 
   10434  1.1  christos #undef TARGET_LITTLE_SYM
   10435  1.1  christos #undef TARGET_LITTLE_NAME
   10436  1.1  christos 
   10437  1.1  christos #undef TARGET_BIG_SYM
   10438  1.1  christos #define TARGET_BIG_SYM		powerpc_elf32_vxworks_vec
   10439  1.1  christos #undef TARGET_BIG_NAME
   10440  1.1  christos #define TARGET_BIG_NAME		"elf32-powerpc-vxworks"
   10441  1.1  christos 
   10442  1.1  christos #undef  ELF_OSABI
   10443  1.1  christos 
   10444  1.1  christos /* VxWorks uses the elf default section flags for .plt.  */
   10445  1.1  christos static const struct bfd_elf_special_section *
   10446  1.1  christos ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
   10447  1.1  christos {
   10448  1.7  christos   if (sec->name == NULL)
   10449  1.1  christos     return NULL;
   10450  1.1  christos 
   10451  1.1  christos   if (strcmp (sec->name, ".plt") == 0)
   10452  1.1  christos     return _bfd_elf_get_sec_type_attr (abfd, sec);
   10453  1.1  christos 
   10454  1.1  christos   return ppc_elf_get_sec_type_attr (abfd, sec);
   10455  1.1  christos }
   10456  1.1  christos 
   10457  1.1  christos /* Like ppc_elf_link_hash_table_create, but overrides
   10458  1.1  christos    appropriately for VxWorks.  */
   10459  1.1  christos static struct bfd_link_hash_table *
   10460  1.1  christos ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
   10461  1.1  christos {
   10462  1.1  christos   struct bfd_link_hash_table *ret;
   10463  1.7  christos 
   10464  1.7  christos   ret = ppc_elf_link_hash_table_create (abfd);
   10465  1.1  christos   if (ret)
   10466  1.1  christos     {
   10467  1.1  christos       struct ppc_elf_link_hash_table *htab
   10468  1.7  christos 	= (struct ppc_elf_link_hash_table *)ret;
   10469  1.7  christos       htab->is_vxworks = 1;
   10470  1.1  christos       htab->plt_type = PLT_VXWORKS;
   10471  1.1  christos       htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
   10472  1.7  christos       htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
   10473  1.1  christos       htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
   10474  1.1  christos     }
   10475  1.9  christos   return ret;
   10476  1.9  christos }
   10477  1.1  christos 
   10478  1.9  christos /* Tweak magic VxWorks symbols as they are loaded.  */
   10479  1.9  christos static bfd_boolean
   10480  1.1  christos ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
   10481  1.1  christos 				 struct bfd_link_info *info,
   10482  1.1  christos 				 Elf_Internal_Sym *sym,
   10483  1.1  christos 				 const char **namep,
   10484  1.1  christos 				 flagword *flagsp,
   10485  1.1  christos 				 asection **secp,
   10486  1.1  christos 				 bfd_vma *valp)
   10487  1.1  christos {
   10488  1.1  christos   if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
   10489  1.1  christos 				    valp))
   10490  1.1  christos     return FALSE;
   10491  1.1  christos 
   10492  1.1  christos   return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
   10493  1.1  christos }
   10494  1.1  christos 
   10495  1.1  christos static bfd_boolean
   10496  1.7  christos ppc_elf_vxworks_final_write_processing (bfd *abfd)
   10497  1.7  christos {
   10498  1.1  christos   ppc_final_write_processing (abfd);
   10499  1.1  christos   return elf_vxworks_final_write_processing (abfd);
   10500  1.1  christos }
   10501  1.1  christos 
   10502  1.1  christos /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
   10503  1.1  christos    define it.  */
   10504  1.1  christos #undef elf_backend_want_plt_sym
   10505  1.1  christos #define elf_backend_want_plt_sym		1
   10506  1.1  christos #undef elf_backend_want_got_plt
   10507  1.1  christos #define elf_backend_want_got_plt		1
   10508  1.1  christos #undef elf_backend_got_symbol_offset
   10509  1.1  christos #define elf_backend_got_symbol_offset		0
   10510  1.1  christos #undef elf_backend_plt_not_loaded
   10511  1.1  christos #define elf_backend_plt_not_loaded		0
   10512  1.1  christos #undef elf_backend_plt_readonly
   10513  1.1  christos #define elf_backend_plt_readonly		1
   10514  1.1  christos #undef elf_backend_got_header_size
   10515  1.1  christos #define elf_backend_got_header_size		12
   10516  1.1  christos #undef elf_backend_dtrel_excludes_plt
   10517  1.1  christos #define elf_backend_dtrel_excludes_plt		1
   10518  1.1  christos 
   10519  1.1  christos #undef bfd_elf32_get_synthetic_symtab
   10520  1.1  christos 
   10521  1.1  christos #undef bfd_elf32_bfd_link_hash_table_create
   10522  1.1  christos #define bfd_elf32_bfd_link_hash_table_create \
   10523  1.1  christos   ppc_elf_vxworks_link_hash_table_create
   10524                #undef elf_backend_add_symbol_hook
   10525                #define elf_backend_add_symbol_hook \
   10526                  ppc_elf_vxworks_add_symbol_hook
   10527                #undef elf_backend_link_output_symbol_hook
   10528                #define elf_backend_link_output_symbol_hook \
   10529                  elf_vxworks_link_output_symbol_hook
   10530                #undef elf_backend_final_write_processing
   10531                #define elf_backend_final_write_processing \
   10532                  ppc_elf_vxworks_final_write_processing
   10533                #undef elf_backend_get_sec_type_attr
   10534                #define elf_backend_get_sec_type_attr \
   10535                  ppc_elf_vxworks_get_sec_type_attr
   10536                #undef elf_backend_emit_relocs
   10537                #define elf_backend_emit_relocs \
   10538                  elf_vxworks_emit_relocs
   10539                
   10540                #undef elf32_bed
   10541                #define elf32_bed				ppc_elf_vxworks_bed
   10542                
   10543                #include "elf32-target.h"
   10544