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elf32-ppc.c revision 1.9
      1 /* PowerPC-specific support for 32-bit ELF
      2    Copyright (C) 1994-2020 Free Software Foundation, Inc.
      3    Written by Ian Lance Taylor, Cygnus Support.
      4 
      5    This file is part of BFD, the Binary File Descriptor library.
      6 
      7    This program is free software; you can redistribute it and/or modify
      8    it under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3 of the License, or
     10    (at your option) any later version.
     11 
     12    This program is distributed in the hope that it will be useful,
     13    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15    GNU General Public License for more details.
     16 
     17    You should have received a copy of the GNU General Public License
     18    along with this program; if not, write to the
     19    Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
     20    Boston, MA 02110-1301, USA.  */
     21 
     22 
     23 /* This file is based on a preliminary PowerPC ELF ABI.  The
     24    information may not match the final PowerPC ELF ABI.  It includes
     25    suggestions from the in-progress Embedded PowerPC ABI, and that
     26    information may also not match.  */
     27 
     28 #include "sysdep.h"
     29 #include <stdarg.h>
     30 #include "bfd.h"
     31 #include "bfdlink.h"
     32 #include "libbfd.h"
     33 #include "elf-bfd.h"
     34 #include "elf/ppc.h"
     35 #include "elf32-ppc.h"
     36 #include "elf-vxworks.h"
     37 #include "dwarf2.h"
     38 #include "opcode/ppc.h"
     39 
     40 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
     41 #define OCTETS_PER_BYTE(ABFD, SEC) 1
     42 
     43 typedef enum split16_format_type
     44 {
     45   split16a_type = 0,
     46   split16d_type
     47 }
     48 split16_format_type;
     49 
     50 /* RELA relocations are used here.  */
     51 
     52 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
     53   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
     54 static bfd_reloc_status_type ppc_elf_unhandled_reloc
     55   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
     56 
     57 /* Branch prediction bit for branch taken relocs.  */
     58 #define BRANCH_PREDICT_BIT 0x200000
     59 /* Mask to set RA in memory instructions.  */
     60 #define RA_REGISTER_MASK 0x001f0000
     61 /* Value to shift register by to insert RA.  */
     62 #define RA_REGISTER_SHIFT 16
     63 
     64 /* The name of the dynamic interpreter.  This is put in the .interp
     65    section.  */
     66 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
     67 
     68 /* For old-style PLT.  */
     69 /* The number of single-slot PLT entries (the rest use two slots).  */
     70 #define PLT_NUM_SINGLE_ENTRIES 8192
     71 
     72 /* For new-style .glink and .plt.  */
     73 #define GLINK_PLTRESOLVE 16*4
     74 #define GLINK_ENTRY_SIZE(htab, h)					\
     75   ((4*4									\
     76     + (h != NULL							\
     77        && h == htab->tls_get_addr					\
     78        && !htab->params->no_tls_get_addr_opt ? 8*4 : 0)			\
     79     + (1u << htab->params->plt_stub_align) - 1)				\
     80    & -(1u << htab->params->plt_stub_align))
     81 
     82 /* VxWorks uses its own plt layout, filled in by the static linker.  */
     83 
     84 /* The standard VxWorks PLT entry.  */
     85 #define VXWORKS_PLT_ENTRY_SIZE 32
     86 static const bfd_vma ppc_elf_vxworks_plt_entry
     87     [VXWORKS_PLT_ENTRY_SIZE / 4] =
     88   {
     89     0x3d800000, /* lis	   r12,0		 */
     90     0x818c0000, /* lwz	   r12,0(r12)		 */
     91     0x7d8903a6, /* mtctr   r12			 */
     92     0x4e800420, /* bctr				 */
     93     0x39600000, /* li	   r11,0		 */
     94     0x48000000, /* b	   14 <.PLT0resolve+0x4> */
     95     0x60000000, /* nop				 */
     96     0x60000000, /* nop				 */
     97   };
     98 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
     99     [VXWORKS_PLT_ENTRY_SIZE / 4] =
    100   {
    101     0x3d9e0000, /* addis r12,r30,0 */
    102     0x818c0000, /* lwz	 r12,0(r12) */
    103     0x7d8903a6, /* mtctr r12 */
    104     0x4e800420, /* bctr */
    105     0x39600000, /* li	 r11,0 */
    106     0x48000000, /* b	 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
    107     0x60000000, /* nop */
    108     0x60000000, /* nop */
    109   };
    110 
    111 /* The initial VxWorks PLT entry.  */
    112 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
    113 static const bfd_vma ppc_elf_vxworks_plt0_entry
    114     [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
    115   {
    116     0x3d800000, /* lis	   r12,0	*/
    117     0x398c0000, /* addi	   r12,r12,0	*/
    118     0x800c0008, /* lwz	   r0,8(r12)	*/
    119     0x7c0903a6, /* mtctr   r0		*/
    120     0x818c0004, /* lwz	   r12,4(r12)	*/
    121     0x4e800420, /* bctr			*/
    122     0x60000000, /* nop			*/
    123     0x60000000, /* nop			*/
    124   };
    125 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
    126     [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
    127   {
    128     0x819e0008, /* lwz	 r12,8(r30) */
    129     0x7d8903a6, /* mtctr r12	    */
    130     0x819e0004, /* lwz	 r12,4(r30) */
    131     0x4e800420, /* bctr		    */
    132     0x60000000, /* nop		    */
    133     0x60000000, /* nop		    */
    134     0x60000000, /* nop		    */
    135     0x60000000, /* nop		    */
    136   };
    137 
    138 /* For executables, we have some additional relocations in
    139    .rela.plt.unloaded, for the kernel loader.  */
    140 
    141 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
    142 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
    143 /* The number of relocations in the PLTResolve slot. */
    144 #define VXWORKS_PLTRESOLVE_RELOCS 2
    145 /* The number of relocations in the PLTResolve slot when creating
    146    a shared library. */
    147 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
    148 
    149 /* Some instructions.  */
    150 #define ADDIS_11_11	0x3d6b0000
    151 #define ADDIS_11_30	0x3d7e0000
    152 #define ADDIS_12_12	0x3d8c0000
    153 #define ADDI_11_11	0x396b0000
    154 #define ADD_0_11_11	0x7c0b5a14
    155 #define ADD_3_12_2	0x7c6c1214
    156 #define ADD_11_0_11	0x7d605a14
    157 #define B		0x48000000
    158 #define BA		0x48000002
    159 #define BCL_20_31	0x429f0005
    160 #define BCTR		0x4e800420
    161 #define BEQLR		0x4d820020
    162 #define CMPWI_11_0	0x2c0b0000
    163 #define LIS_11		0x3d600000
    164 #define LIS_12		0x3d800000
    165 #define LWZU_0_12	0x840c0000
    166 #define LWZ_0_12	0x800c0000
    167 #define LWZ_11_3	0x81630000
    168 #define LWZ_11_11	0x816b0000
    169 #define LWZ_11_30	0x817e0000
    170 #define LWZ_12_3	0x81830000
    171 #define LWZ_12_12	0x818c0000
    172 #define MR_0_3		0x7c601b78
    173 #define MR_3_0		0x7c030378
    174 #define MFLR_0		0x7c0802a6
    175 #define MFLR_12		0x7d8802a6
    176 #define MTCTR_0		0x7c0903a6
    177 #define MTCTR_11	0x7d6903a6
    178 #define MTLR_0		0x7c0803a6
    179 #define NOP		0x60000000
    180 #define SUB_11_11_12	0x7d6c5850
    181 
    182 /* Offset of tp and dtp pointers from start of TLS block.  */
    183 #define TP_OFFSET	0x7000
    184 #define DTP_OFFSET	0x8000
    185 
    186 /* The value of a defined global symbol.  */
    187 #define SYM_VAL(SYM) \
    188   ((SYM)->root.u.def.section->output_section->vma	\
    189    + (SYM)->root.u.def.section->output_offset		\
    190    + (SYM)->root.u.def.value)
    191 
    192 /* Relocation HOWTO's.  */
    194 /* Like other ELF RELA targets that don't apply multiple
    195    field-altering relocations to the same localation, src_mask is
    196    always zero and pcrel_offset is the same as pc_relative.
    197    PowerPC can always use a zero bitpos, even when the field is not at
    198    the LSB.  For example, a REL24 could use rightshift=2, bisize=24
    199    and bitpos=2 which matches the ABI description, or as we do here,
    200    rightshift=0, bitsize=26 and bitpos=0.  */
    201 #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \
    202 	    complain, special_func)				\
    203   HOWTO (type, rightshift, size, bitsize, pc_relative, 0,	\
    204 	 complain_overflow_ ## complain, special_func,		\
    205 	 #type, FALSE, 0, mask, pc_relative)
    206 
    207 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
    208 
    209 static reloc_howto_type ppc_elf_howto_raw[] = {
    210   /* This reloc does nothing.  */
    211   HOW (R_PPC_NONE, 3, 0, 0, 0, FALSE, dont,
    212        bfd_elf_generic_reloc),
    213 
    214   /* A standard 32 bit relocation.  */
    215   HOW (R_PPC_ADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    216        bfd_elf_generic_reloc),
    217 
    218   /* An absolute 26 bit branch; the lower two bits must be zero.
    219      FIXME: we don't check that, we just clear them.  */
    220   HOW (R_PPC_ADDR24, 2, 26, 0x3fffffc, 0, FALSE, signed,
    221        bfd_elf_generic_reloc),
    222 
    223   /* A standard 16 bit relocation.  */
    224   HOW (R_PPC_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
    225        bfd_elf_generic_reloc),
    226 
    227   /* A 16 bit relocation without overflow.  */
    228   HOW (R_PPC_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    229        bfd_elf_generic_reloc),
    230 
    231   /* The high order 16 bits of an address.  */
    232   HOW (R_PPC_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    233        bfd_elf_generic_reloc),
    234 
    235   /* The high order 16 bits of an address, plus 1 if the contents of
    236      the low 16 bits, treated as a signed number, is negative.  */
    237   HOW (R_PPC_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    238        ppc_elf_addr16_ha_reloc),
    239 
    240   /* An absolute 16 bit branch; the lower two bits must be zero.
    241      FIXME: we don't check that, we just clear them.  */
    242   HOW (R_PPC_ADDR14, 2, 16, 0xfffc, 0, FALSE, signed,
    243        bfd_elf_generic_reloc),
    244 
    245   /* An absolute 16 bit branch, for which bit 10 should be set to
    246      indicate that the branch is expected to be taken.	The lower two
    247      bits must be zero.  */
    248   HOW (R_PPC_ADDR14_BRTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
    249        bfd_elf_generic_reloc),
    250 
    251   /* An absolute 16 bit branch, for which bit 10 should be set to
    252      indicate that the branch is not expected to be taken.  The lower
    253      two bits must be zero.  */
    254   HOW (R_PPC_ADDR14_BRNTAKEN, 2, 16, 0xfffc, 0, FALSE, signed,
    255        bfd_elf_generic_reloc),
    256 
    257   /* A relative 26 bit branch; the lower two bits must be zero.  */
    258   HOW (R_PPC_REL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
    259        bfd_elf_generic_reloc),
    260 
    261   /* A relative 16 bit branch; the lower two bits must be zero.  */
    262   HOW (R_PPC_REL14, 2, 16, 0xfffc, 0, TRUE, signed,
    263        bfd_elf_generic_reloc),
    264 
    265   /* A relative 16 bit branch.  Bit 10 should be set to indicate that
    266      the branch is expected to be taken.  The lower two bits must be
    267      zero.  */
    268   HOW (R_PPC_REL14_BRTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
    269        bfd_elf_generic_reloc),
    270 
    271   /* A relative 16 bit branch.  Bit 10 should be set to indicate that
    272      the branch is not expected to be taken.  The lower two bits must
    273      be zero.  */
    274   HOW (R_PPC_REL14_BRNTAKEN, 2, 16, 0xfffc, 0, TRUE, signed,
    275        bfd_elf_generic_reloc),
    276 
    277   /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
    278      symbol.  */
    279   HOW (R_PPC_GOT16, 1, 16, 0xffff, 0, FALSE, signed,
    280        ppc_elf_unhandled_reloc),
    281 
    282   /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
    283      the symbol.  */
    284   HOW (R_PPC_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    285        ppc_elf_unhandled_reloc),
    286 
    287   /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
    288      the symbol.  */
    289   HOW (R_PPC_GOT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    290        ppc_elf_unhandled_reloc),
    291 
    292   /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
    293      the symbol.  */
    294   HOW (R_PPC_GOT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    295        ppc_elf_unhandled_reloc),
    296 
    297   /* Like R_PPC_REL24, but referring to the procedure linkage table
    298      entry for the symbol.  */
    299   HOW (R_PPC_PLTREL24, 2, 26, 0x3fffffc, 0, TRUE, signed,
    300        ppc_elf_unhandled_reloc),
    301 
    302   /* This is used only by the dynamic linker.  The symbol should exist
    303      both in the object being run and in some shared library.  The
    304      dynamic linker copies the data addressed by the symbol from the
    305      shared library into the object, because the object being
    306      run has to have the data at some particular address.  */
    307   HOW (R_PPC_COPY, 2, 32, 0, 0, FALSE, dont,
    308        ppc_elf_unhandled_reloc),
    309 
    310   /* Like R_PPC_ADDR32, but used when setting global offset table
    311      entries.  */
    312   HOW (R_PPC_GLOB_DAT, 2, 32, 0xffffffff, 0, FALSE, dont,
    313        ppc_elf_unhandled_reloc),
    314 
    315   /* Marks a procedure linkage table entry for a symbol.  */
    316   HOW (R_PPC_JMP_SLOT, 2, 32, 0, 0, FALSE, dont,
    317        ppc_elf_unhandled_reloc),
    318 
    319   /* Used only by the dynamic linker.  When the object is run, this
    320      longword is set to the load address of the object, plus the
    321      addend.  */
    322   HOW (R_PPC_RELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
    323        bfd_elf_generic_reloc),
    324 
    325   /* Like R_PPC_REL24, but uses the value of the symbol within the
    326      object rather than the final value.  Normally used for
    327      _GLOBAL_OFFSET_TABLE_.  */
    328   HOW (R_PPC_LOCAL24PC, 2, 26, 0x3fffffc, 0, TRUE, signed,
    329        bfd_elf_generic_reloc),
    330 
    331   /* Like R_PPC_ADDR32, but may be unaligned.  */
    332   HOW (R_PPC_UADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    333        bfd_elf_generic_reloc),
    334 
    335   /* Like R_PPC_ADDR16, but may be unaligned.  */
    336   HOW (R_PPC_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield,
    337        bfd_elf_generic_reloc),
    338 
    339   /* 32-bit PC relative */
    340   HOW (R_PPC_REL32, 2, 32, 0xffffffff, 0, TRUE, dont,
    341        bfd_elf_generic_reloc),
    342 
    343   /* 32-bit relocation to the symbol's procedure linkage table.
    344      FIXME: not supported.  */
    345   HOW (R_PPC_PLT32, 2, 32, 0, 0, FALSE, dont,
    346        ppc_elf_unhandled_reloc),
    347 
    348   /* 32-bit PC relative relocation to the symbol's procedure linkage table.
    349      FIXME: not supported.  */
    350   HOW (R_PPC_PLTREL32, 2, 32, 0, 0, TRUE, dont,
    351        ppc_elf_unhandled_reloc),
    352 
    353   /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
    354      the symbol.  */
    355   HOW (R_PPC_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    356        ppc_elf_unhandled_reloc),
    357 
    358   /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
    359      the symbol.  */
    360   HOW (R_PPC_PLT16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    361        ppc_elf_unhandled_reloc),
    362 
    363   /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
    364      the symbol.  */
    365   HOW (R_PPC_PLT16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    366        ppc_elf_unhandled_reloc),
    367 
    368   /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
    369      small data items.  */
    370   HOW (R_PPC_SDAREL16, 1, 16, 0xffff, 0, FALSE, signed,
    371        ppc_elf_unhandled_reloc),
    372 
    373   /* 16-bit section relative relocation.  */
    374   HOW (R_PPC_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed,
    375        ppc_elf_unhandled_reloc),
    376 
    377   /* 16-bit lower half section relative relocation.  */
    378   HOW (R_PPC_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont,
    379        ppc_elf_unhandled_reloc),
    380 
    381   /* 16-bit upper half section relative relocation.  */
    382   HOW (R_PPC_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, dont,
    383        ppc_elf_unhandled_reloc),
    384 
    385   /* 16-bit upper half adjusted section relative relocation.  */
    386   HOW (R_PPC_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, dont,
    387        ppc_elf_unhandled_reloc),
    388 
    389   /* Marker relocs for TLS.  */
    390   HOW (R_PPC_TLS, 2, 32, 0, 0, FALSE, dont,
    391        bfd_elf_generic_reloc),
    392 
    393   HOW (R_PPC_TLSGD, 2, 32, 0, 0, FALSE, dont,
    394        bfd_elf_generic_reloc),
    395 
    396   HOW (R_PPC_TLSLD, 2, 32, 0, 0, FALSE, dont,
    397        bfd_elf_generic_reloc),
    398 
    399   /* Marker relocs on inline plt call instructions.  */
    400   HOW (R_PPC_PLTSEQ, 2, 32, 0, 0, FALSE, dont,
    401        bfd_elf_generic_reloc),
    402 
    403   HOW (R_PPC_PLTCALL, 2, 32, 0, 0, FALSE, dont,
    404        bfd_elf_generic_reloc),
    405 
    406   /* Computes the load module index of the load module that contains the
    407      definition of its TLS sym.  */
    408   HOW (R_PPC_DTPMOD32, 2, 32, 0xffffffff, 0, FALSE, dont,
    409        ppc_elf_unhandled_reloc),
    410 
    411   /* Computes a dtv-relative displacement, the difference between the value
    412      of sym+add and the base address of the thread-local storage block that
    413      contains the definition of sym, minus 0x8000.  */
    414   HOW (R_PPC_DTPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
    415        ppc_elf_unhandled_reloc),
    416 
    417   /* A 16 bit dtprel reloc.  */
    418   HOW (R_PPC_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    419        ppc_elf_unhandled_reloc),
    420 
    421   /* Like DTPREL16, but no overflow.  */
    422   HOW (R_PPC_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    423        ppc_elf_unhandled_reloc),
    424 
    425   /* Like DTPREL16_LO, but next higher group of 16 bits.  */
    426   HOW (R_PPC_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    427        ppc_elf_unhandled_reloc),
    428 
    429   /* Like DTPREL16_HI, but adjust for low 16 bits.  */
    430   HOW (R_PPC_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    431        ppc_elf_unhandled_reloc),
    432 
    433   /* Computes a tp-relative displacement, the difference between the value of
    434      sym+add and the value of the thread pointer (r13).  */
    435   HOW (R_PPC_TPREL32, 2, 32, 0xffffffff, 0, FALSE, dont,
    436        ppc_elf_unhandled_reloc),
    437 
    438   /* A 16 bit tprel reloc.  */
    439   HOW (R_PPC_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    440        ppc_elf_unhandled_reloc),
    441 
    442   /* Like TPREL16, but no overflow.  */
    443   HOW (R_PPC_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    444        ppc_elf_unhandled_reloc),
    445 
    446   /* Like TPREL16_LO, but next higher group of 16 bits.  */
    447   HOW (R_PPC_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    448        ppc_elf_unhandled_reloc),
    449 
    450   /* Like TPREL16_HI, but adjust for low 16 bits.  */
    451   HOW (R_PPC_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    452        ppc_elf_unhandled_reloc),
    453 
    454   /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
    455      with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
    456      to the first entry.  */
    457   HOW (R_PPC_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed,
    458        ppc_elf_unhandled_reloc),
    459 
    460   /* Like GOT_TLSGD16, but no overflow.  */
    461   HOW (R_PPC_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    462        ppc_elf_unhandled_reloc),
    463 
    464   /* Like GOT_TLSGD16_LO, but next higher group of 16 bits.  */
    465   HOW (R_PPC_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    466        ppc_elf_unhandled_reloc),
    467 
    468   /* Like GOT_TLSGD16_HI, but adjust for low 16 bits.  */
    469   HOW (R_PPC_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    470        ppc_elf_unhandled_reloc),
    471 
    472   /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
    473      with values (sym+add)@dtpmod and zero, and computes the offset to the
    474      first entry.  */
    475   HOW (R_PPC_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed,
    476        ppc_elf_unhandled_reloc),
    477 
    478   /* Like GOT_TLSLD16, but no overflow.  */
    479   HOW (R_PPC_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    480        ppc_elf_unhandled_reloc),
    481 
    482   /* Like GOT_TLSLD16_LO, but next higher group of 16 bits.  */
    483   HOW (R_PPC_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    484        ppc_elf_unhandled_reloc),
    485 
    486   /* Like GOT_TLSLD16_HI, but adjust for low 16 bits.  */
    487   HOW (R_PPC_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    488        ppc_elf_unhandled_reloc),
    489 
    490   /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
    491      the offset to the entry.  */
    492   HOW (R_PPC_GOT_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    493        ppc_elf_unhandled_reloc),
    494 
    495   /* Like GOT_DTPREL16, but no overflow.  */
    496   HOW (R_PPC_GOT_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    497        ppc_elf_unhandled_reloc),
    498 
    499   /* Like GOT_DTPREL16_LO, but next higher group of 16 bits.  */
    500   HOW (R_PPC_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    501        ppc_elf_unhandled_reloc),
    502 
    503   /* Like GOT_DTPREL16_HI, but adjust for low 16 bits.  */
    504   HOW (R_PPC_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    505        ppc_elf_unhandled_reloc),
    506 
    507   /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
    508      offset to the entry.  */
    509   HOW (R_PPC_GOT_TPREL16, 1, 16, 0xffff, 0, FALSE, signed,
    510        ppc_elf_unhandled_reloc),
    511 
    512   /* Like GOT_TPREL16, but no overflow.  */
    513   HOW (R_PPC_GOT_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    514        ppc_elf_unhandled_reloc),
    515 
    516   /* Like GOT_TPREL16_LO, but next higher group of 16 bits.  */
    517   HOW (R_PPC_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    518        ppc_elf_unhandled_reloc),
    519 
    520   /* Like GOT_TPREL16_HI, but adjust for low 16 bits.  */
    521   HOW (R_PPC_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    522        ppc_elf_unhandled_reloc),
    523 
    524   /* The remaining relocs are from the Embedded ELF ABI, and are not
    525      in the SVR4 ELF ABI.  */
    526 
    527   /* 32 bit value resulting from the addend minus the symbol.  */
    528   HOW (R_PPC_EMB_NADDR32, 2, 32, 0xffffffff, 0, FALSE, dont,
    529        ppc_elf_unhandled_reloc),
    530 
    531   /* 16 bit value resulting from the addend minus the symbol.  */
    532   HOW (R_PPC_EMB_NADDR16, 1, 16, 0xffff, 0, FALSE, signed,
    533        ppc_elf_unhandled_reloc),
    534 
    535   /* 16 bit value resulting from the addend minus the symbol.  */
    536   HOW (R_PPC_EMB_NADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont,
    537        ppc_elf_unhandled_reloc),
    538 
    539   /* The high order 16 bits of the addend minus the symbol.  */
    540   HOW (R_PPC_EMB_NADDR16_HI, 1, 16, 0xffff, 16, FALSE, dont,
    541        ppc_elf_unhandled_reloc),
    542 
    543   /* The high order 16 bits of the result of the addend minus the address,
    544      plus 1 if the contents of the low 16 bits, treated as a signed number,
    545      is negative.  */
    546   HOW (R_PPC_EMB_NADDR16_HA, 1, 16, 0xffff, 16, FALSE, dont,
    547        ppc_elf_unhandled_reloc),
    548 
    549   /* 16 bit value resulting from allocating a 4 byte word to hold an
    550      address in the .sdata section, and returning the offset from
    551      _SDA_BASE_ for that relocation.  */
    552   HOW (R_PPC_EMB_SDAI16, 1, 16, 0xffff, 0, FALSE, signed,
    553        ppc_elf_unhandled_reloc),
    554 
    555   /* 16 bit value resulting from allocating a 4 byte word to hold an
    556      address in the .sdata2 section, and returning the offset from
    557      _SDA2_BASE_ for that relocation.  */
    558   HOW (R_PPC_EMB_SDA2I16, 1, 16, 0xffff, 0, FALSE, signed,
    559        ppc_elf_unhandled_reloc),
    560 
    561   /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
    562      small data items.	 */
    563   HOW (R_PPC_EMB_SDA2REL, 1, 16, 0xffff, 0, FALSE, signed,
    564        ppc_elf_unhandled_reloc),
    565 
    566   /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
    567      signed offset from the appropriate base, and filling in the register
    568      field with the appropriate register (0, 2, or 13).  */
    569   HOW (R_PPC_EMB_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
    570        ppc_elf_unhandled_reloc),
    571 
    572   /* Relocation not handled: R_PPC_EMB_MRKREF */
    573   /* Relocation not handled: R_PPC_EMB_RELSEC16 */
    574   /* Relocation not handled: R_PPC_EMB_RELST_LO */
    575   /* Relocation not handled: R_PPC_EMB_RELST_HI */
    576   /* Relocation not handled: R_PPC_EMB_RELST_HA */
    577   /* Relocation not handled: R_PPC_EMB_BIT_FLD */
    578 
    579   /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
    580      in the 16 bit signed offset from the appropriate base, and filling in the
    581      register field with the appropriate register (0, 2, or 13).  */
    582   HOW (R_PPC_EMB_RELSDA, 1, 16, 0xffff, 0, FALSE, signed,
    583        ppc_elf_unhandled_reloc),
    584 
    585   /* A relative 8 bit branch.  */
    586   HOW (R_PPC_VLE_REL8, 1, 8, 0xff, 1, TRUE, signed,
    587        bfd_elf_generic_reloc),
    588 
    589   /* A relative 15 bit branch.  */
    590   HOW (R_PPC_VLE_REL15, 2, 16, 0xfffe, 0, TRUE, signed,
    591        bfd_elf_generic_reloc),
    592 
    593   /* A relative 24 bit branch.  */
    594   HOW (R_PPC_VLE_REL24, 2, 25, 0x1fffffe, 0, TRUE, signed,
    595        bfd_elf_generic_reloc),
    596 
    597   /* The 16 LSBS in split16a format.  */
    598   HOW (R_PPC_VLE_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
    599        ppc_elf_unhandled_reloc),
    600 
    601   /* The 16 LSBS in split16d format.  */
    602   HOW (R_PPC_VLE_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
    603        ppc_elf_unhandled_reloc),
    604 
    605   /* Bits 16-31 split16a format.  */
    606   HOW (R_PPC_VLE_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    607        ppc_elf_unhandled_reloc),
    608 
    609   /* Bits 16-31 split16d format.  */
    610   HOW (R_PPC_VLE_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    611        ppc_elf_unhandled_reloc),
    612 
    613   /* Bits 16-31 (High Adjusted) in split16a format.  */
    614   HOW (R_PPC_VLE_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    615        ppc_elf_unhandled_reloc),
    616 
    617   /* Bits 16-31 (High Adjusted) in split16d format.  */
    618   HOW (R_PPC_VLE_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    619        ppc_elf_unhandled_reloc),
    620 
    621   /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
    622      instructions.  If the register base is 0 then the linker changes
    623      the e_add16i to an e_li instruction.  */
    624   HOW (R_PPC_VLE_SDA21, 2, 16, 0xffff, 0, FALSE, signed,
    625        ppc_elf_unhandled_reloc),
    626 
    627   /* Like R_PPC_VLE_SDA21 but ignore overflow.  */
    628   HOW (R_PPC_VLE_SDA21_LO, 2, 16, 0xffff, 0, FALSE, dont,
    629        ppc_elf_unhandled_reloc),
    630 
    631   /* The 16 LSBS relative to _SDA_BASE_ in split16a format.  */
    632   HOW (R_PPC_VLE_SDAREL_LO16A, 2, 16, 0x1f07ff, 0, FALSE, dont,
    633        ppc_elf_unhandled_reloc),
    634 
    635   /* The 16 LSBS relative to _SDA_BASE_ in split16d format.  */
    636   HOW (R_PPC_VLE_SDAREL_LO16D, 2, 16, 0x3e007ff, 0, FALSE, dont,
    637        ppc_elf_unhandled_reloc),
    638 
    639   /* Bits 16-31 relative to _SDA_BASE_ in split16a format.  */
    640   HOW (R_PPC_VLE_SDAREL_HI16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    641        ppc_elf_unhandled_reloc),
    642 
    643   /* Bits 16-31 relative to _SDA_BASE_ in split16d format.  */
    644   HOW (R_PPC_VLE_SDAREL_HI16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    645        ppc_elf_unhandled_reloc),
    646 
    647   /* Bits 16-31 (HA) relative to _SDA_BASE split16a format.  */
    648   HOW (R_PPC_VLE_SDAREL_HA16A, 2, 16, 0x1f07ff, 16, FALSE, dont,
    649        ppc_elf_unhandled_reloc),
    650 
    651   /* Bits 16-31 (HA) relative to _SDA_BASE split16d format.  */
    652   HOW (R_PPC_VLE_SDAREL_HA16D, 2, 16, 0x3e007ff, 16, FALSE, dont,
    653        ppc_elf_unhandled_reloc),
    654 
    655   /* e_li split20 format.  */
    656   HOW (R_PPC_VLE_ADDR20, 2, 20, 0x1f7fff, 0, FALSE, dont,
    657        ppc_elf_unhandled_reloc),
    658 
    659   HOW (R_PPC_IRELATIVE, 2, 32, 0xffffffff, 0, FALSE, dont,
    660        ppc_elf_unhandled_reloc),
    661 
    662   /* A 16 bit relative relocation.  */
    663   HOW (R_PPC_REL16, 1, 16, 0xffff, 0, TRUE, signed,
    664        bfd_elf_generic_reloc),
    665 
    666   /* A 16 bit relative relocation without overflow.  */
    667   HOW (R_PPC_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont,
    668        bfd_elf_generic_reloc),
    669 
    670   /* The high order 16 bits of a relative address.  */
    671   HOW (R_PPC_REL16_HI, 1, 16, 0xffff, 16, TRUE, dont,
    672        bfd_elf_generic_reloc),
    673 
    674   /* The high order 16 bits of a relative address, plus 1 if the contents of
    675      the low 16 bits, treated as a signed number, is negative.  */
    676   HOW (R_PPC_REL16_HA, 1, 16, 0xffff, 16, TRUE, dont,
    677        ppc_elf_addr16_ha_reloc),
    678 
    679   /* Like R_PPC_REL16_HA but for split field in addpcis.  */
    680   HOW (R_PPC_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed,
    681        ppc_elf_addr16_ha_reloc),
    682 
    683   /* A split-field reloc for addpcis, non-relative (gas internal use only).  */
    684   HOW (R_PPC_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed,
    685        ppc_elf_addr16_ha_reloc),
    686 
    687   /* GNU extension to record C++ vtable hierarchy.  */
    688   HOW (R_PPC_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont,
    689        NULL),
    690 
    691   /* GNU extension to record C++ vtable member usage.  */
    692   HOW (R_PPC_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont,
    693        NULL),
    694 
    695   /* Phony reloc to handle AIX style TOC entries.  */
    696   HOW (R_PPC_TOC16, 1, 16, 0xffff, 0, FALSE, signed,
    697        ppc_elf_unhandled_reloc),
    698 };
    699 
    700 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done.  */
    702 
    703 static void
    704 ppc_elf_howto_init (void)
    705 {
    706   unsigned int i, type;
    707 
    708   for (i = 0;
    709        i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
    710        i++)
    711     {
    712       type = ppc_elf_howto_raw[i].type;
    713       if (type >= (sizeof (ppc_elf_howto_table)
    714 		   / sizeof (ppc_elf_howto_table[0])))
    715 	abort ();
    716       ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
    717     }
    718 }
    719 
    720 static reloc_howto_type *
    721 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    722 			   bfd_reloc_code_real_type code)
    723 {
    724   enum elf_ppc_reloc_type r;
    725 
    726   /* Initialize howto table if not already done.  */
    727   if (!ppc_elf_howto_table[R_PPC_ADDR32])
    728     ppc_elf_howto_init ();
    729 
    730   switch (code)
    731     {
    732     default:
    733       return NULL;
    734 
    735     case BFD_RELOC_NONE:		r = R_PPC_NONE;			break;
    736     case BFD_RELOC_32:			r = R_PPC_ADDR32;		break;
    737     case BFD_RELOC_PPC_BA26:		r = R_PPC_ADDR24;		break;
    738     case BFD_RELOC_PPC64_ADDR16_DS:
    739     case BFD_RELOC_16:			r = R_PPC_ADDR16;		break;
    740     case BFD_RELOC_PPC64_ADDR16_LO_DS:
    741     case BFD_RELOC_LO16:		r = R_PPC_ADDR16_LO;		break;
    742     case BFD_RELOC_HI16:		r = R_PPC_ADDR16_HI;		break;
    743     case BFD_RELOC_HI16_S:		r = R_PPC_ADDR16_HA;		break;
    744     case BFD_RELOC_PPC_BA16:		r = R_PPC_ADDR14;		break;
    745     case BFD_RELOC_PPC_BA16_BRTAKEN:	r = R_PPC_ADDR14_BRTAKEN;	break;
    746     case BFD_RELOC_PPC_BA16_BRNTAKEN:	r = R_PPC_ADDR14_BRNTAKEN;	break;
    747     case BFD_RELOC_PPC_B26:		r = R_PPC_REL24;		break;
    748     case BFD_RELOC_PPC_B16:		r = R_PPC_REL14;		break;
    749     case BFD_RELOC_PPC_B16_BRTAKEN:	r = R_PPC_REL14_BRTAKEN;	break;
    750     case BFD_RELOC_PPC_B16_BRNTAKEN:	r = R_PPC_REL14_BRNTAKEN;	break;
    751     case BFD_RELOC_PPC64_GOT16_DS:
    752     case BFD_RELOC_16_GOTOFF:		r = R_PPC_GOT16;		break;
    753     case BFD_RELOC_PPC64_GOT16_LO_DS:
    754     case BFD_RELOC_LO16_GOTOFF:		r = R_PPC_GOT16_LO;		break;
    755     case BFD_RELOC_HI16_GOTOFF:		r = R_PPC_GOT16_HI;		break;
    756     case BFD_RELOC_HI16_S_GOTOFF:	r = R_PPC_GOT16_HA;		break;
    757     case BFD_RELOC_24_PLT_PCREL:	r = R_PPC_PLTREL24;		break;
    758     case BFD_RELOC_PPC_COPY:		r = R_PPC_COPY;			break;
    759     case BFD_RELOC_PPC_GLOB_DAT:	r = R_PPC_GLOB_DAT;		break;
    760     case BFD_RELOC_PPC_LOCAL24PC:	r = R_PPC_LOCAL24PC;		break;
    761     case BFD_RELOC_32_PCREL:		r = R_PPC_REL32;		break;
    762     case BFD_RELOC_32_PLTOFF:		r = R_PPC_PLT32;		break;
    763     case BFD_RELOC_32_PLT_PCREL:	r = R_PPC_PLTREL32;		break;
    764     case BFD_RELOC_PPC64_PLT16_LO_DS:
    765     case BFD_RELOC_LO16_PLTOFF:		r = R_PPC_PLT16_LO;		break;
    766     case BFD_RELOC_HI16_PLTOFF:		r = R_PPC_PLT16_HI;		break;
    767     case BFD_RELOC_HI16_S_PLTOFF:	r = R_PPC_PLT16_HA;		break;
    768     case BFD_RELOC_GPREL16:		r = R_PPC_SDAREL16;		break;
    769     case BFD_RELOC_PPC64_SECTOFF_DS:
    770     case BFD_RELOC_16_BASEREL:		r = R_PPC_SECTOFF;		break;
    771     case BFD_RELOC_PPC64_SECTOFF_LO_DS:
    772     case BFD_RELOC_LO16_BASEREL:	r = R_PPC_SECTOFF_LO;		break;
    773     case BFD_RELOC_HI16_BASEREL:	r = R_PPC_SECTOFF_HI;		break;
    774     case BFD_RELOC_HI16_S_BASEREL:	r = R_PPC_SECTOFF_HA;		break;
    775     case BFD_RELOC_CTOR:		r = R_PPC_ADDR32;		break;
    776     case BFD_RELOC_PPC64_TOC16_DS:
    777     case BFD_RELOC_PPC_TOC16:		r = R_PPC_TOC16;		break;
    778     case BFD_RELOC_PPC_TLS:		r = R_PPC_TLS;			break;
    779     case BFD_RELOC_PPC_TLSGD:		r = R_PPC_TLSGD;		break;
    780     case BFD_RELOC_PPC_TLSLD:		r = R_PPC_TLSLD;		break;
    781     case BFD_RELOC_PPC_DTPMOD:		r = R_PPC_DTPMOD32;		break;
    782     case BFD_RELOC_PPC64_TPREL16_DS:
    783     case BFD_RELOC_PPC_TPREL16:		r = R_PPC_TPREL16;		break;
    784     case BFD_RELOC_PPC64_TPREL16_LO_DS:
    785     case BFD_RELOC_PPC_TPREL16_LO:	r = R_PPC_TPREL16_LO;		break;
    786     case BFD_RELOC_PPC_TPREL16_HI:	r = R_PPC_TPREL16_HI;		break;
    787     case BFD_RELOC_PPC_TPREL16_HA:	r = R_PPC_TPREL16_HA;		break;
    788     case BFD_RELOC_PPC_TPREL:		r = R_PPC_TPREL32;		break;
    789     case BFD_RELOC_PPC64_DTPREL16_DS:
    790     case BFD_RELOC_PPC_DTPREL16:	r = R_PPC_DTPREL16;		break;
    791     case BFD_RELOC_PPC64_DTPREL16_LO_DS:
    792     case BFD_RELOC_PPC_DTPREL16_LO:	r = R_PPC_DTPREL16_LO;		break;
    793     case BFD_RELOC_PPC_DTPREL16_HI:	r = R_PPC_DTPREL16_HI;		break;
    794     case BFD_RELOC_PPC_DTPREL16_HA:	r = R_PPC_DTPREL16_HA;		break;
    795     case BFD_RELOC_PPC_DTPREL:		r = R_PPC_DTPREL32;		break;
    796     case BFD_RELOC_PPC_GOT_TLSGD16:	r = R_PPC_GOT_TLSGD16;		break;
    797     case BFD_RELOC_PPC_GOT_TLSGD16_LO:	r = R_PPC_GOT_TLSGD16_LO;	break;
    798     case BFD_RELOC_PPC_GOT_TLSGD16_HI:	r = R_PPC_GOT_TLSGD16_HI;	break;
    799     case BFD_RELOC_PPC_GOT_TLSGD16_HA:	r = R_PPC_GOT_TLSGD16_HA;	break;
    800     case BFD_RELOC_PPC_GOT_TLSLD16:	r = R_PPC_GOT_TLSLD16;		break;
    801     case BFD_RELOC_PPC_GOT_TLSLD16_LO:	r = R_PPC_GOT_TLSLD16_LO;	break;
    802     case BFD_RELOC_PPC_GOT_TLSLD16_HI:	r = R_PPC_GOT_TLSLD16_HI;	break;
    803     case BFD_RELOC_PPC_GOT_TLSLD16_HA:	r = R_PPC_GOT_TLSLD16_HA;	break;
    804     case BFD_RELOC_PPC_GOT_TPREL16:	r = R_PPC_GOT_TPREL16;		break;
    805     case BFD_RELOC_PPC_GOT_TPREL16_LO:	r = R_PPC_GOT_TPREL16_LO;	break;
    806     case BFD_RELOC_PPC_GOT_TPREL16_HI:	r = R_PPC_GOT_TPREL16_HI;	break;
    807     case BFD_RELOC_PPC_GOT_TPREL16_HA:	r = R_PPC_GOT_TPREL16_HA;	break;
    808     case BFD_RELOC_PPC_GOT_DTPREL16:	r = R_PPC_GOT_DTPREL16;		break;
    809     case BFD_RELOC_PPC_GOT_DTPREL16_LO:	r = R_PPC_GOT_DTPREL16_LO;	break;
    810     case BFD_RELOC_PPC_GOT_DTPREL16_HI:	r = R_PPC_GOT_DTPREL16_HI;	break;
    811     case BFD_RELOC_PPC_GOT_DTPREL16_HA:	r = R_PPC_GOT_DTPREL16_HA;	break;
    812     case BFD_RELOC_PPC_EMB_NADDR32:	r = R_PPC_EMB_NADDR32;		break;
    813     case BFD_RELOC_PPC_EMB_NADDR16:	r = R_PPC_EMB_NADDR16;		break;
    814     case BFD_RELOC_PPC_EMB_NADDR16_LO:	r = R_PPC_EMB_NADDR16_LO;	break;
    815     case BFD_RELOC_PPC_EMB_NADDR16_HI:	r = R_PPC_EMB_NADDR16_HI;	break;
    816     case BFD_RELOC_PPC_EMB_NADDR16_HA:	r = R_PPC_EMB_NADDR16_HA;	break;
    817     case BFD_RELOC_PPC_EMB_SDAI16:	r = R_PPC_EMB_SDAI16;		break;
    818     case BFD_RELOC_PPC_EMB_SDA2I16:	r = R_PPC_EMB_SDA2I16;		break;
    819     case BFD_RELOC_PPC_EMB_SDA2REL:	r = R_PPC_EMB_SDA2REL;		break;
    820     case BFD_RELOC_PPC_EMB_SDA21:	r = R_PPC_EMB_SDA21;		break;
    821     case BFD_RELOC_PPC_EMB_MRKREF:	r = R_PPC_EMB_MRKREF;		break;
    822     case BFD_RELOC_PPC_EMB_RELSEC16:	r = R_PPC_EMB_RELSEC16;		break;
    823     case BFD_RELOC_PPC_EMB_RELST_LO:	r = R_PPC_EMB_RELST_LO;		break;
    824     case BFD_RELOC_PPC_EMB_RELST_HI:	r = R_PPC_EMB_RELST_HI;		break;
    825     case BFD_RELOC_PPC_EMB_RELST_HA:	r = R_PPC_EMB_RELST_HA;		break;
    826     case BFD_RELOC_PPC_EMB_BIT_FLD:	r = R_PPC_EMB_BIT_FLD;		break;
    827     case BFD_RELOC_PPC_EMB_RELSDA:	r = R_PPC_EMB_RELSDA;		break;
    828     case BFD_RELOC_PPC_VLE_REL8:	r = R_PPC_VLE_REL8;		break;
    829     case BFD_RELOC_PPC_VLE_REL15:	r = R_PPC_VLE_REL15;		break;
    830     case BFD_RELOC_PPC_VLE_REL24:	r = R_PPC_VLE_REL24;		break;
    831     case BFD_RELOC_PPC_VLE_LO16A:	r = R_PPC_VLE_LO16A;		break;
    832     case BFD_RELOC_PPC_VLE_LO16D:	r = R_PPC_VLE_LO16D;		break;
    833     case BFD_RELOC_PPC_VLE_HI16A:	r = R_PPC_VLE_HI16A;		break;
    834     case BFD_RELOC_PPC_VLE_HI16D:	r = R_PPC_VLE_HI16D;		break;
    835     case BFD_RELOC_PPC_VLE_HA16A:	r = R_PPC_VLE_HA16A;		break;
    836     case BFD_RELOC_PPC_VLE_HA16D:	r = R_PPC_VLE_HA16D;		break;
    837     case BFD_RELOC_PPC_VLE_SDA21:	r = R_PPC_VLE_SDA21;		break;
    838     case BFD_RELOC_PPC_VLE_SDA21_LO:	r = R_PPC_VLE_SDA21_LO;		break;
    839     case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
    840       r = R_PPC_VLE_SDAREL_LO16A;
    841       break;
    842     case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
    843       r = R_PPC_VLE_SDAREL_LO16D;
    844       break;
    845     case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
    846       r = R_PPC_VLE_SDAREL_HI16A;
    847       break;
    848     case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
    849       r = R_PPC_VLE_SDAREL_HI16D;
    850       break;
    851     case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
    852       r = R_PPC_VLE_SDAREL_HA16A;
    853       break;
    854     case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
    855       r = R_PPC_VLE_SDAREL_HA16D;
    856       break;
    857     case BFD_RELOC_16_PCREL:		r = R_PPC_REL16;		break;
    858     case BFD_RELOC_LO16_PCREL:		r = R_PPC_REL16_LO;		break;
    859     case BFD_RELOC_HI16_PCREL:		r = R_PPC_REL16_HI;		break;
    860     case BFD_RELOC_HI16_S_PCREL:	r = R_PPC_REL16_HA;		break;
    861     case BFD_RELOC_PPC_16DX_HA:		r = R_PPC_16DX_HA;		break;
    862     case BFD_RELOC_PPC_REL16DX_HA:	r = R_PPC_REL16DX_HA;		break;
    863     case BFD_RELOC_VTABLE_INHERIT:	r = R_PPC_GNU_VTINHERIT;	break;
    864     case BFD_RELOC_VTABLE_ENTRY:	r = R_PPC_GNU_VTENTRY;		break;
    865     }
    866 
    867   return ppc_elf_howto_table[r];
    868 };
    869 
    870 static reloc_howto_type *
    871 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    872 			   const char *r_name)
    873 {
    874   unsigned int i;
    875 
    876   for (i = 0;
    877        i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
    878        i++)
    879     if (ppc_elf_howto_raw[i].name != NULL
    880 	&& strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
    881       return &ppc_elf_howto_raw[i];
    882 
    883   return NULL;
    884 }
    885 
    886 /* Set the howto pointer for a PowerPC ELF reloc.  */
    887 
    888 static bfd_boolean
    889 ppc_elf_info_to_howto (bfd *abfd,
    890 		       arelent *cache_ptr,
    891 		       Elf_Internal_Rela *dst)
    892 {
    893   unsigned int r_type;
    894 
    895   /* Initialize howto table if not already done.  */
    896   if (!ppc_elf_howto_table[R_PPC_ADDR32])
    897     ppc_elf_howto_init ();
    898 
    899   r_type = ELF32_R_TYPE (dst->r_info);
    900   if (r_type >= R_PPC_max)
    901     {
    902       /* xgettext:c-format */
    903       _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
    904 			  abfd, r_type);
    905       bfd_set_error (bfd_error_bad_value);
    906       return FALSE;
    907     }
    908 
    909   cache_ptr->howto = ppc_elf_howto_table[r_type];
    910 
    911   /* Just because the above assert didn't trigger doesn't mean that
    912      ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation.  */
    913   if (cache_ptr->howto == NULL)
    914     {
    915       /* xgettext:c-format */
    916       _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
    917 			  abfd, r_type);
    918       bfd_set_error (bfd_error_bad_value);
    919 
    920       return FALSE;
    921     }
    922 
    923   return TRUE;
    924 }
    925 
    926 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs.  */
    927 
    928 static bfd_reloc_status_type
    929 ppc_elf_addr16_ha_reloc (bfd *abfd,
    930 			 arelent *reloc_entry,
    931 			 asymbol *symbol,
    932 			 void *data,
    933 			 asection *input_section,
    934 			 bfd *output_bfd,
    935 			 char **error_message ATTRIBUTE_UNUSED)
    936 {
    937   enum elf_ppc_reloc_type r_type;
    938   long insn;
    939   bfd_size_type octets;
    940   bfd_vma value;
    941 
    942   if (output_bfd != NULL)
    943     {
    944       reloc_entry->address += input_section->output_offset;
    945       return bfd_reloc_ok;
    946     }
    947 
    948   reloc_entry->addend += 0x8000;
    949   r_type = reloc_entry->howto->type;
    950   if (r_type != R_PPC_REL16DX_HA)
    951     return bfd_reloc_continue;
    952 
    953   value = 0;
    954   if (!bfd_is_com_section (symbol->section))
    955     value = symbol->value;
    956   value += (reloc_entry->addend
    957 	    + symbol->section->output_offset
    958 	    + symbol->section->output_section->vma);
    959   value -= (reloc_entry->address
    960 	    + input_section->output_offset
    961 	    + input_section->output_section->vma);
    962   value >>= 16;
    963 
    964   octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section);
    965   insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
    966   insn &= ~0x1fffc1;
    967   insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
    968   bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
    969   return bfd_reloc_ok;
    970 }
    971 
    972 static bfd_reloc_status_type
    973 ppc_elf_unhandled_reloc (bfd *abfd,
    974 			 arelent *reloc_entry,
    975 			 asymbol *symbol,
    976 			 void *data,
    977 			 asection *input_section,
    978 			 bfd *output_bfd,
    979 			 char **error_message)
    980 {
    981   /* If this is a relocatable link (output_bfd test tells us), just
    982      call the generic function.  Any adjustment will be done at final
    983      link time.  */
    984   if (output_bfd != NULL)
    985     return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
    986 				  input_section, output_bfd, error_message);
    987 
    988   if (error_message != NULL)
    989     {
    990       static char buf[60];
    991       sprintf (buf, _("generic linker can't handle %s"),
    992 	       reloc_entry->howto->name);
    993       *error_message = buf;
    994     }
    995   return bfd_reloc_dangerous;
    996 }
    997 
    998 /* Sections created by the linker.  */
   1000 
   1001 typedef struct elf_linker_section
   1002 {
   1003   /* Pointer to the bfd section.  */
   1004   asection *section;
   1005   /* Section name.  */
   1006   const char *name;
   1007   /* Associated bss section name.  */
   1008   const char *bss_name;
   1009   /* Associated symbol name.  */
   1010   const char *sym_name;
   1011   /* Associated symbol.  */
   1012   struct elf_link_hash_entry *sym;
   1013 } elf_linker_section_t;
   1014 
   1015 /* Linked list of allocated pointer entries.  This hangs off of the
   1016    symbol lists, and provides allows us to return different pointers,
   1017    based on different addend's.  */
   1018 
   1019 typedef struct elf_linker_section_pointers
   1020 {
   1021   /* next allocated pointer for this symbol */
   1022   struct elf_linker_section_pointers *next;
   1023   /* offset of pointer from beginning of section */
   1024   bfd_vma offset;
   1025   /* addend used */
   1026   bfd_vma addend;
   1027   /* which linker section this is */
   1028   elf_linker_section_t *lsect;
   1029 } elf_linker_section_pointers_t;
   1030 
   1031 struct ppc_elf_obj_tdata
   1032 {
   1033   struct elf_obj_tdata elf;
   1034 
   1035   /* A mapping from local symbols to offsets into the various linker
   1036      sections added.  This is index by the symbol index.  */
   1037   elf_linker_section_pointers_t **linker_section_pointers;
   1038 
   1039   /* Flags used to auto-detect plt type.  */
   1040   unsigned int makes_plt_call : 1;
   1041   unsigned int has_rel16 : 1;
   1042 };
   1043 
   1044 #define ppc_elf_tdata(bfd) \
   1045   ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
   1046 
   1047 #define elf_local_ptr_offsets(bfd) \
   1048   (ppc_elf_tdata (bfd)->linker_section_pointers)
   1049 
   1050 #define is_ppc_elf(bfd) \
   1051   (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
   1052    && elf_object_id (bfd) == PPC32_ELF_DATA)
   1053 
   1054 /* Override the generic function because we store some extras.  */
   1055 
   1056 static bfd_boolean
   1057 ppc_elf_mkobject (bfd *abfd)
   1058 {
   1059   return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
   1060 				  PPC32_ELF_DATA);
   1061 }
   1062 
   1063 /* When defaulting arch/mach, decode apuinfo to find a better match.  */
   1064 
   1065 bfd_boolean
   1066 _bfd_elf_ppc_set_arch (bfd *abfd)
   1067 {
   1068   unsigned long mach = 0;
   1069   asection *s;
   1070   unsigned char *contents;
   1071 
   1072   if (abfd->arch_info->bits_per_word == 32
   1073       && bfd_big_endian (abfd))
   1074     {
   1075 
   1076       for (s = abfd->sections; s != NULL; s = s->next)
   1077 	if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
   1078 	  break;
   1079       if (s != NULL)
   1080 	mach = bfd_mach_ppc_vle;
   1081     }
   1082 
   1083   if (mach == 0)
   1084     {
   1085       s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1086       if (s != NULL
   1087 	  && s->size >= 24
   1088 	  && bfd_malloc_and_get_section (abfd, s, &contents))
   1089 	{
   1090 	  unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
   1091 	  unsigned int i;
   1092 
   1093 	  for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
   1094 	    {
   1095 	      unsigned int val = bfd_get_32 (abfd, contents + i);
   1096 	      switch (val >> 16)
   1097 		{
   1098 		case PPC_APUINFO_PMR:
   1099 		case PPC_APUINFO_RFMCI:
   1100 		  if (mach == 0)
   1101 		    mach = bfd_mach_ppc_titan;
   1102 		  break;
   1103 
   1104 		case PPC_APUINFO_ISEL:
   1105 		case PPC_APUINFO_CACHELCK:
   1106 		  if (mach == bfd_mach_ppc_titan)
   1107 		    mach = bfd_mach_ppc_e500mc;
   1108 		  break;
   1109 
   1110 		case PPC_APUINFO_SPE:
   1111 		case PPC_APUINFO_EFS:
   1112 		case PPC_APUINFO_BRLOCK:
   1113 		  if (mach != bfd_mach_ppc_vle)
   1114 		    mach = bfd_mach_ppc_e500;
   1115 		  break;
   1116 
   1117 		case PPC_APUINFO_VLE:
   1118 		  mach = bfd_mach_ppc_vle;
   1119 		  break;
   1120 
   1121 		default:
   1122 		  mach = -1ul;
   1123 		}
   1124 	    }
   1125 	  free (contents);
   1126 	}
   1127     }
   1128 
   1129   if (mach != 0 && mach != -1ul)
   1130     {
   1131       const bfd_arch_info_type *arch;
   1132 
   1133       for (arch = abfd->arch_info->next; arch; arch = arch->next)
   1134 	if (arch->mach == mach)
   1135 	  {
   1136 	    abfd->arch_info = arch;
   1137 	    break;
   1138 	  }
   1139     }
   1140   return TRUE;
   1141 }
   1142 
   1143 /* Fix bad default arch selected for a 32 bit input bfd when the
   1144    default is 64 bit.  Also select arch based on apuinfo.  */
   1145 
   1146 static bfd_boolean
   1147 ppc_elf_object_p (bfd *abfd)
   1148 {
   1149   if (!abfd->arch_info->the_default)
   1150     return TRUE;
   1151 
   1152   if (abfd->arch_info->bits_per_word == 64)
   1153     {
   1154       Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
   1155 
   1156       if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
   1157 	{
   1158 	  /* Relies on arch after 64 bit default being 32 bit default.  */
   1159 	  abfd->arch_info = abfd->arch_info->next;
   1160 	  BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
   1161 	}
   1162     }
   1163   return _bfd_elf_ppc_set_arch (abfd);
   1164 }
   1165 
   1166 /* Function to set whether a module needs the -mrelocatable bit set.  */
   1167 
   1168 static bfd_boolean
   1169 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
   1170 {
   1171   BFD_ASSERT (!elf_flags_init (abfd)
   1172 	      || elf_elfheader (abfd)->e_flags == flags);
   1173 
   1174   elf_elfheader (abfd)->e_flags = flags;
   1175   elf_flags_init (abfd) = TRUE;
   1176   return TRUE;
   1177 }
   1178 
   1179 /* Support for core dump NOTE sections.  */
   1180 
   1181 static bfd_boolean
   1182 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
   1183 {
   1184   int offset;
   1185   unsigned int size;
   1186 
   1187   switch (note->descsz)
   1188     {
   1189     default:
   1190       return FALSE;
   1191 
   1192     case 268:		/* Linux/PPC.  */
   1193       /* pr_cursig */
   1194       elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
   1195 
   1196       /* pr_pid */
   1197       elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
   1198 
   1199       /* pr_reg */
   1200       offset = 72;
   1201       size = 192;
   1202 
   1203       break;
   1204     }
   1205 
   1206   /* Make a ".reg/999" section.  */
   1207   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
   1208 					  size, note->descpos + offset);
   1209 }
   1210 
   1211 static bfd_boolean
   1212 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
   1213 {
   1214   switch (note->descsz)
   1215     {
   1216     default:
   1217       return FALSE;
   1218 
   1219     case 128:		/* Linux/PPC elf_prpsinfo.  */
   1220       elf_tdata (abfd)->core->pid
   1221 	= bfd_get_32 (abfd, note->descdata + 16);
   1222       elf_tdata (abfd)->core->program
   1223 	= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
   1224       elf_tdata (abfd)->core->command
   1225 	= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
   1226     }
   1227 
   1228   /* Note that for some reason, a spurious space is tacked
   1229      onto the end of the args in some (at least one anyway)
   1230      implementations, so strip it off if it exists.  */
   1231 
   1232   {
   1233     char *command = elf_tdata (abfd)->core->command;
   1234     int n = strlen (command);
   1235 
   1236     if (0 < n && command[n - 1] == ' ')
   1237       command[n - 1] = '\0';
   1238   }
   1239 
   1240   return TRUE;
   1241 }
   1242 
   1243 static char *
   1244 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
   1245 {
   1246   switch (note_type)
   1247     {
   1248     default:
   1249       return NULL;
   1250 
   1251     case NT_PRPSINFO:
   1252       {
   1253 	char data[128] ATTRIBUTE_NONSTRING;
   1254 	va_list ap;
   1255 
   1256 	va_start (ap, note_type);
   1257 	memset (data, 0, sizeof (data));
   1258 	strncpy (data + 32, va_arg (ap, const char *), 16);
   1259 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
   1260 	DIAGNOSTIC_PUSH;
   1261 	/* GCC 8.0 and 8.1 warn about 80 equals destination size with
   1262 	   -Wstringop-truncation:
   1263 	   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
   1264 	 */
   1265 	DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
   1266 #endif
   1267 	strncpy (data + 48, va_arg (ap, const char *), 80);
   1268 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
   1269 	DIAGNOSTIC_POP;
   1270 #endif
   1271 	va_end (ap);
   1272 	return elfcore_write_note (abfd, buf, bufsiz,
   1273 				   "CORE", note_type, data, sizeof (data));
   1274       }
   1275 
   1276     case NT_PRSTATUS:
   1277       {
   1278 	char data[268];
   1279 	va_list ap;
   1280 	long pid;
   1281 	int cursig;
   1282 	const void *greg;
   1283 
   1284 	va_start (ap, note_type);
   1285 	memset (data, 0, 72);
   1286 	pid = va_arg (ap, long);
   1287 	bfd_put_32 (abfd, pid, data + 24);
   1288 	cursig = va_arg (ap, int);
   1289 	bfd_put_16 (abfd, cursig, data + 12);
   1290 	greg = va_arg (ap, const void *);
   1291 	memcpy (data + 72, greg, 192);
   1292 	memset (data + 264, 0, 4);
   1293 	va_end (ap);
   1294 	return elfcore_write_note (abfd, buf, bufsiz,
   1295 				   "CORE", note_type, data, sizeof (data));
   1296       }
   1297     }
   1298 }
   1299 
   1300 static flagword
   1301 ppc_elf_lookup_section_flags (char *flag_name)
   1302 {
   1303 
   1304   if (!strcmp (flag_name, "SHF_PPC_VLE"))
   1305     return SHF_PPC_VLE;
   1306 
   1307   return 0;
   1308 }
   1309 
   1310 /* Return address for Ith PLT stub in section PLT, for relocation REL
   1311    or (bfd_vma) -1 if it should not be included.  */
   1312 
   1313 static bfd_vma
   1314 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
   1315 		     const asection *plt ATTRIBUTE_UNUSED,
   1316 		     const arelent *rel)
   1317 {
   1318   return rel->address;
   1319 }
   1320 
   1321 /* Handle a PowerPC specific section when reading an object file.  This
   1322    is called when bfd_section_from_shdr finds a section with an unknown
   1323    type.  */
   1324 
   1325 static bfd_boolean
   1326 ppc_elf_section_from_shdr (bfd *abfd,
   1327 			   Elf_Internal_Shdr *hdr,
   1328 			   const char *name,
   1329 			   int shindex)
   1330 {
   1331   asection *newsect;
   1332   flagword flags;
   1333 
   1334   if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
   1335     return FALSE;
   1336 
   1337   newsect = hdr->bfd_section;
   1338   flags = bfd_section_flags (newsect);
   1339   if (hdr->sh_flags & SHF_EXCLUDE)
   1340     flags |= SEC_EXCLUDE;
   1341 
   1342   if (hdr->sh_type == SHT_ORDERED)
   1343     flags |= SEC_SORT_ENTRIES;
   1344 
   1345   bfd_set_section_flags (newsect, flags);
   1346   return TRUE;
   1347 }
   1348 
   1349 /* Set up any other section flags and such that may be necessary.  */
   1350 
   1351 static bfd_boolean
   1352 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
   1353 		       Elf_Internal_Shdr *shdr,
   1354 		       asection *asect)
   1355 {
   1356   if ((asect->flags & SEC_SORT_ENTRIES) != 0)
   1357     shdr->sh_type = SHT_ORDERED;
   1358 
   1359   return TRUE;
   1360 }
   1361 
   1362 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
   1363    need to bump up the number of section headers.  */
   1364 
   1365 static int
   1366 ppc_elf_additional_program_headers (bfd *abfd,
   1367 				    struct bfd_link_info *info ATTRIBUTE_UNUSED)
   1368 {
   1369   asection *s;
   1370   int ret = 0;
   1371 
   1372   s = bfd_get_section_by_name (abfd, ".sbss2");
   1373   if (s != NULL && (s->flags & SEC_ALLOC) != 0)
   1374     ++ret;
   1375 
   1376   s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
   1377   if (s != NULL && (s->flags & SEC_ALLOC) != 0)
   1378     ++ret;
   1379 
   1380   return ret;
   1381 }
   1382 
   1383 /* Modify the segment map for VLE executables.  */
   1384 
   1385 bfd_boolean
   1386 ppc_elf_modify_segment_map (bfd *abfd,
   1387 			    struct bfd_link_info *info ATTRIBUTE_UNUSED)
   1388 {
   1389   struct elf_segment_map *m;
   1390 
   1391   /* At this point in the link, output sections have already been sorted by
   1392      LMA and assigned to segments.  All that is left to do is to ensure
   1393      there is no mixing of VLE & non-VLE sections in a text segment.
   1394      If we find that case, we split the segment.
   1395      We maintain the original output section order.  */
   1396 
   1397   for (m = elf_seg_map (abfd); m != NULL; m = m->next)
   1398     {
   1399       struct elf_segment_map *n;
   1400       bfd_size_type amt;
   1401       unsigned int j, k;
   1402       unsigned int p_flags;
   1403 
   1404       if (m->p_type != PT_LOAD || m->count == 0)
   1405 	continue;
   1406 
   1407       for (p_flags = PF_R, j = 0; j != m->count; ++j)
   1408 	{
   1409 	  if ((m->sections[j]->flags & SEC_READONLY) == 0)
   1410 	    p_flags |= PF_W;
   1411 	  if ((m->sections[j]->flags & SEC_CODE) != 0)
   1412 	    {
   1413 	      p_flags |= PF_X;
   1414 	      if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
   1415 		p_flags |= PF_PPC_VLE;
   1416 	      break;
   1417 	    }
   1418 	}
   1419       if (j != m->count)
   1420 	while (++j != m->count)
   1421 	  {
   1422 	    unsigned int p_flags1 = PF_R;
   1423 
   1424 	    if ((m->sections[j]->flags & SEC_READONLY) == 0)
   1425 	      p_flags1 |= PF_W;
   1426 	    if ((m->sections[j]->flags & SEC_CODE) != 0)
   1427 	      {
   1428 		p_flags1 |= PF_X;
   1429 		if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
   1430 		  p_flags1 |= PF_PPC_VLE;
   1431 		if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
   1432 		  break;
   1433 	      }
   1434 	    p_flags |= p_flags1;
   1435 	  }
   1436       /* If we're splitting a segment which originally contained rw
   1437 	 sections then those sections might now only be in one of the
   1438 	 two parts.  So always set p_flags if splitting, even if we
   1439 	 are being called for objcopy with p_flags_valid set.  */
   1440       if (j != m->count || !m->p_flags_valid)
   1441 	{
   1442 	  m->p_flags_valid = 1;
   1443 	  m->p_flags = p_flags;
   1444 	}
   1445       if (j == m->count)
   1446 	continue;
   1447 
   1448       /* Sections 0..j-1 stay in this (current) segment,
   1449 	 the remainder are put in a new segment.
   1450 	 The scan resumes with the new segment.  */
   1451 
   1452       amt = sizeof (struct elf_segment_map);
   1453       amt += (m->count - j - 1) * sizeof (asection *);
   1454       n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
   1455       if (n == NULL)
   1456 	return FALSE;
   1457 
   1458       n->p_type = PT_LOAD;
   1459       n->count = m->count - j;
   1460       for (k = 0; k < n->count; ++k)
   1461 	n->sections[k] = m->sections[j + k];
   1462       m->count = j;
   1463       m->p_size_valid = 0;
   1464       n->next = m->next;
   1465       m->next = n;
   1466     }
   1467 
   1468   return TRUE;
   1469 }
   1470 
   1471 /* Add extra PPC sections -- Note, for now, make .sbss2 and
   1472    .PPC.EMB.sbss0 a normal section, and not a bss section so
   1473    that the linker doesn't crater when trying to make more than
   1474    2 sections.  */
   1475 
   1476 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
   1477 {
   1478   { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
   1479   { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
   1480   { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
   1481   { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
   1482   { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
   1483   { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
   1484   { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
   1485   { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
   1486   { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
   1487   { NULL, 0, 0, 0, 0 }
   1488 };
   1489 
   1490 /* This is what we want for new plt/got.  */
   1491 static struct bfd_elf_special_section ppc_alt_plt =
   1492   { STRING_COMMA_LEN (".plt"),		   0, SHT_PROGBITS, SHF_ALLOC };
   1493 
   1494 static const struct bfd_elf_special_section *
   1495 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
   1496 {
   1497   const struct bfd_elf_special_section *ssect;
   1498 
   1499   /* See if this is one of the special sections.  */
   1500   if (sec->name == NULL)
   1501     return NULL;
   1502 
   1503   ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
   1504 					sec->use_rela_p);
   1505   if (ssect != NULL)
   1506     {
   1507       if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
   1508 	ssect = &ppc_alt_plt;
   1509       return ssect;
   1510     }
   1511 
   1512   return _bfd_elf_get_sec_type_attr (abfd, sec);
   1513 }
   1514 
   1515 /* Very simple linked list structure for recording apuinfo values.  */
   1517 typedef struct apuinfo_list
   1518 {
   1519   struct apuinfo_list *next;
   1520   unsigned long value;
   1521 }
   1522 apuinfo_list;
   1523 
   1524 static apuinfo_list *head;
   1525 static bfd_boolean apuinfo_set;
   1526 
   1527 static void
   1528 apuinfo_list_init (void)
   1529 {
   1530   head = NULL;
   1531   apuinfo_set = FALSE;
   1532 }
   1533 
   1534 static void
   1535 apuinfo_list_add (unsigned long value)
   1536 {
   1537   apuinfo_list *entry = head;
   1538 
   1539   while (entry != NULL)
   1540     {
   1541       if (entry->value == value)
   1542 	return;
   1543       entry = entry->next;
   1544     }
   1545 
   1546   entry = bfd_malloc (sizeof (* entry));
   1547   if (entry == NULL)
   1548     return;
   1549 
   1550   entry->value = value;
   1551   entry->next  = head;
   1552   head = entry;
   1553 }
   1554 
   1555 static unsigned
   1556 apuinfo_list_length (void)
   1557 {
   1558   apuinfo_list *entry;
   1559   unsigned long count;
   1560 
   1561   for (entry = head, count = 0;
   1562        entry;
   1563        entry = entry->next)
   1564     ++ count;
   1565 
   1566   return count;
   1567 }
   1568 
   1569 static inline unsigned long
   1570 apuinfo_list_element (unsigned long number)
   1571 {
   1572   apuinfo_list * entry;
   1573 
   1574   for (entry = head;
   1575        entry && number --;
   1576        entry = entry->next)
   1577     ;
   1578 
   1579   return entry ? entry->value : 0;
   1580 }
   1581 
   1582 static void
   1583 apuinfo_list_finish (void)
   1584 {
   1585   apuinfo_list *entry;
   1586 
   1587   for (entry = head; entry;)
   1588     {
   1589       apuinfo_list *next = entry->next;
   1590       free (entry);
   1591       entry = next;
   1592     }
   1593 
   1594   head = NULL;
   1595 }
   1596 
   1597 /* Scan the input BFDs and create a linked list of
   1598    the APUinfo values that will need to be emitted.  */
   1599 
   1600 static void
   1601 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
   1602 {
   1603   bfd *ibfd;
   1604   asection *asec;
   1605   char *buffer = NULL;
   1606   bfd_size_type largest_input_size = 0;
   1607   unsigned i;
   1608   unsigned long length;
   1609   const char *error_message = NULL;
   1610 
   1611   if (link_info == NULL)
   1612     return;
   1613 
   1614   apuinfo_list_init ();
   1615 
   1616   /* Read in the input sections contents.  */
   1617   for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
   1618     {
   1619       unsigned long datum;
   1620 
   1621       asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
   1622       if (asec == NULL)
   1623 	continue;
   1624 
   1625       /* xgettext:c-format */
   1626       error_message = _("corrupt %s section in %pB");
   1627       length = asec->size;
   1628       if (length < 20)
   1629 	goto fail;
   1630 
   1631       apuinfo_set = TRUE;
   1632       if (largest_input_size < asec->size)
   1633 	{
   1634 	  if (buffer)
   1635 	    free (buffer);
   1636 	  largest_input_size = asec->size;
   1637 	  buffer = bfd_malloc (largest_input_size);
   1638 	  if (!buffer)
   1639 	    return;
   1640 	}
   1641 
   1642       if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
   1643 	  || (bfd_bread (buffer, length, ibfd) != length))
   1644 	{
   1645 	  /* xgettext:c-format */
   1646 	  error_message = _("unable to read in %s section from %pB");
   1647 	  goto fail;
   1648 	}
   1649 
   1650       /* Verify the contents of the header.  Note - we have to
   1651 	 extract the values this way in order to allow for a
   1652 	 host whose endian-ness is different from the target.  */
   1653       datum = bfd_get_32 (ibfd, buffer);
   1654       if (datum != sizeof APUINFO_LABEL)
   1655 	goto fail;
   1656 
   1657       datum = bfd_get_32 (ibfd, buffer + 8);
   1658       if (datum != 0x2)
   1659 	goto fail;
   1660 
   1661       if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
   1662 	goto fail;
   1663 
   1664       /* Get the number of bytes used for apuinfo entries.  */
   1665       datum = bfd_get_32 (ibfd, buffer + 4);
   1666       if (datum + 20 != length)
   1667 	goto fail;
   1668 
   1669       /* Scan the apuinfo section, building a list of apuinfo numbers.  */
   1670       for (i = 0; i < datum; i += 4)
   1671 	apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
   1672     }
   1673 
   1674   error_message = NULL;
   1675 
   1676   if (apuinfo_set)
   1677     {
   1678       /* Compute the size of the output section.  */
   1679       unsigned num_entries = apuinfo_list_length ();
   1680 
   1681       /* Set the output section size, if it exists.  */
   1682       asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1683 
   1684       if (asec && !bfd_set_section_size (asec, 20 + num_entries * 4))
   1685 	{
   1686 	  ibfd = abfd;
   1687 	  /* xgettext:c-format */
   1688 	  error_message = _("warning: unable to set size of %s section in %pB");
   1689 	}
   1690     }
   1691 
   1692  fail:
   1693   if (buffer)
   1694     free (buffer);
   1695 
   1696   if (error_message)
   1697     _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
   1698 }
   1699 
   1700 /* Prevent the output section from accumulating the input sections'
   1701    contents.  We have already stored this in our linked list structure.  */
   1702 
   1703 static bfd_boolean
   1704 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
   1705 		       struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
   1706 		       asection *asec,
   1707 		       bfd_byte *contents ATTRIBUTE_UNUSED)
   1708 {
   1709   return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
   1710 }
   1711 
   1712 /* Finally we can generate the output section.  */
   1713 
   1714 static void
   1715 ppc_final_write_processing (bfd *abfd)
   1716 {
   1717   bfd_byte *buffer;
   1718   asection *asec;
   1719   unsigned i;
   1720   unsigned num_entries;
   1721   bfd_size_type length;
   1722 
   1723   asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
   1724   if (asec == NULL)
   1725     return;
   1726 
   1727   if (!apuinfo_set)
   1728     return;
   1729 
   1730   length = asec->size;
   1731   if (length < 20)
   1732     return;
   1733 
   1734   buffer = bfd_malloc (length);
   1735   if (buffer == NULL)
   1736     {
   1737       _bfd_error_handler
   1738 	(_("failed to allocate space for new APUinfo section"));
   1739       return;
   1740     }
   1741 
   1742   /* Create the apuinfo header.  */
   1743   num_entries = apuinfo_list_length ();
   1744   bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
   1745   bfd_put_32 (abfd, num_entries * 4, buffer + 4);
   1746   bfd_put_32 (abfd, 0x2, buffer + 8);
   1747   strcpy ((char *) buffer + 12, APUINFO_LABEL);
   1748 
   1749   length = 20;
   1750   for (i = 0; i < num_entries; i++)
   1751     {
   1752       bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
   1753       length += 4;
   1754     }
   1755 
   1756   if (length != asec->size)
   1757     _bfd_error_handler (_("failed to compute new APUinfo section"));
   1758 
   1759   if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
   1760     _bfd_error_handler (_("failed to install new APUinfo section"));
   1761 
   1762   free (buffer);
   1763 
   1764   apuinfo_list_finish ();
   1765 }
   1766 
   1767 static bfd_boolean
   1768 ppc_elf_final_write_processing (bfd *abfd)
   1769 {
   1770   ppc_final_write_processing (abfd);
   1771   return _bfd_elf_final_write_processing (abfd);
   1772 }
   1773 
   1774 static bfd_boolean
   1776 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
   1777 {
   1778   bfd_byte buf[4 * 4];
   1779 
   1780   if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
   1781     return FALSE;
   1782 
   1783   return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
   1784 	  && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
   1785 	  && bfd_get_32 (abfd, buf + 8) == MTCTR_11
   1786 	  && bfd_get_32 (abfd, buf + 12) == BCTR);
   1787 }
   1788 
   1789 static bfd_boolean
   1790 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
   1791 {
   1792   bfd_vma vma = *(bfd_vma *) ptr;
   1793   return ((section->flags & SEC_ALLOC) != 0
   1794 	  && section->vma <= vma
   1795 	  && vma < section->vma + section->size);
   1796 }
   1797 
   1798 static long
   1799 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
   1800 			      long dynsymcount, asymbol **dynsyms,
   1801 			      asymbol **ret)
   1802 {
   1803   bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
   1804   asection *plt, *relplt, *dynamic, *glink;
   1805   bfd_vma glink_vma = 0;
   1806   bfd_vma resolv_vma = 0;
   1807   bfd_vma stub_off;
   1808   asymbol *s;
   1809   arelent *p;
   1810   size_t count, i, stub_delta;
   1811   size_t size;
   1812   char *names;
   1813   bfd_byte buf[4];
   1814 
   1815   *ret = NULL;
   1816 
   1817   if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
   1818     return 0;
   1819 
   1820   if (dynsymcount <= 0)
   1821     return 0;
   1822 
   1823   relplt = bfd_get_section_by_name (abfd, ".rela.plt");
   1824   if (relplt == NULL)
   1825     return 0;
   1826 
   1827   plt = bfd_get_section_by_name (abfd, ".plt");
   1828   if (plt == NULL)
   1829     return 0;
   1830 
   1831   /* Call common code to handle old-style executable PLTs.  */
   1832   if (elf_section_flags (plt) & SHF_EXECINSTR)
   1833     return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
   1834 					  dynsymcount, dynsyms, ret);
   1835 
   1836   /* If this object was prelinked, the prelinker stored the address
   1837      of .glink at got[1].  If it wasn't prelinked, got[1] will be zero.  */
   1838   dynamic = bfd_get_section_by_name (abfd, ".dynamic");
   1839   if (dynamic != NULL)
   1840     {
   1841       bfd_byte *dynbuf, *extdyn, *extdynend;
   1842       size_t extdynsize;
   1843       void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
   1844 
   1845       if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
   1846 	return -1;
   1847 
   1848       extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
   1849       swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
   1850 
   1851       extdyn = dynbuf;
   1852       extdynend = extdyn + dynamic->size;
   1853       for (; extdyn < extdynend; extdyn += extdynsize)
   1854 	{
   1855 	  Elf_Internal_Dyn dyn;
   1856 	  (*swap_dyn_in) (abfd, extdyn, &dyn);
   1857 
   1858 	  if (dyn.d_tag == DT_NULL)
   1859 	    break;
   1860 
   1861 	  if (dyn.d_tag == DT_PPC_GOT)
   1862 	    {
   1863 	      unsigned int g_o_t = dyn.d_un.d_val;
   1864 	      asection *got = bfd_get_section_by_name (abfd, ".got");
   1865 	      if (got != NULL
   1866 		  && bfd_get_section_contents (abfd, got, buf,
   1867 					       g_o_t - got->vma + 4, 4))
   1868 		glink_vma = bfd_get_32 (abfd, buf);
   1869 	      break;
   1870 	    }
   1871 	}
   1872       free (dynbuf);
   1873     }
   1874 
   1875   /* Otherwise we read the first plt entry.  */
   1876   if (glink_vma == 0)
   1877     {
   1878       if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
   1879 	glink_vma = bfd_get_32 (abfd, buf);
   1880     }
   1881 
   1882   if (glink_vma == 0)
   1883     return 0;
   1884 
   1885   /* The .glink section usually does not survive the final
   1886      link; search for the section (usually .text) where the
   1887      glink stubs now reside.  */
   1888   glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
   1889   if (glink == NULL)
   1890     return 0;
   1891 
   1892   /* Determine glink PLT resolver by reading the relative branch
   1893      from the first glink stub.  */
   1894   if (bfd_get_section_contents (abfd, glink, buf,
   1895 				glink_vma - glink->vma, 4))
   1896     {
   1897       unsigned int insn = bfd_get_32 (abfd, buf);
   1898 
   1899       /* The first glink stub may either branch to the resolver ...  */
   1900       insn ^= B;
   1901       if ((insn & ~0x3fffffc) == 0)
   1902 	resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
   1903 
   1904       /* ... or fall through a bunch of NOPs.  */
   1905       else if ((insn ^ B ^ NOP) == 0)
   1906 	for (i = 4;
   1907 	     bfd_get_section_contents (abfd, glink, buf,
   1908 				       glink_vma - glink->vma + i, 4);
   1909 	     i += 4)
   1910 	  if (bfd_get_32 (abfd, buf) != NOP)
   1911 	    {
   1912 	      resolv_vma = glink_vma + i;
   1913 	      break;
   1914 	    }
   1915     }
   1916 
   1917   count = relplt->size / sizeof (Elf32_External_Rela);
   1918   /* If the stubs are those for -shared/-pie then we might have
   1919      multiple stubs for each plt entry.  If that is the case then
   1920      there is no way to associate stubs with their plt entries short
   1921      of figuring out the GOT pointer value used in the stub.
   1922      The offsets tested here need to cover all possible values of
   1923      GLINK_ENTRY_SIZE for other than __tls_get_addr_opt.  */
   1924   stub_off = glink_vma - glink->vma;
   1925   for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
   1926     if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
   1927       break;
   1928   if (stub_delta > 32)
   1929     return 0;
   1930 
   1931   slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
   1932   if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
   1933     return -1;
   1934 
   1935   size = count * sizeof (asymbol);
   1936   p = relplt->relocation;
   1937   for (i = 0; i < count; i++, p++)
   1938     {
   1939       size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
   1940       if (p->addend != 0)
   1941 	size += sizeof ("+0x") - 1 + 8;
   1942     }
   1943 
   1944   size += sizeof (asymbol) + sizeof ("__glink");
   1945 
   1946   if (resolv_vma)
   1947     size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
   1948 
   1949   s = *ret = bfd_malloc (size);
   1950   if (s == NULL)
   1951     return -1;
   1952 
   1953   stub_off = glink_vma - glink->vma;
   1954   names = (char *) (s + count + 1 + (resolv_vma != 0));
   1955   p = relplt->relocation + count - 1;
   1956   for (i = 0; i < count; i++)
   1957     {
   1958       size_t len;
   1959 
   1960       stub_off -= stub_delta;
   1961       if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
   1962 	stub_off -= 32;
   1963       *s = **p->sym_ptr_ptr;
   1964       /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set.  Since
   1965 	 we are defining a symbol, ensure one of them is set.  */
   1966       if ((s->flags & BSF_LOCAL) == 0)
   1967 	s->flags |= BSF_GLOBAL;
   1968       s->flags |= BSF_SYNTHETIC;
   1969       s->section = glink;
   1970       s->value = stub_off;
   1971       s->name = names;
   1972       s->udata.p = NULL;
   1973       len = strlen ((*p->sym_ptr_ptr)->name);
   1974       memcpy (names, (*p->sym_ptr_ptr)->name, len);
   1975       names += len;
   1976       if (p->addend != 0)
   1977 	{
   1978 	  memcpy (names, "+0x", sizeof ("+0x") - 1);
   1979 	  names += sizeof ("+0x") - 1;
   1980 	  bfd_sprintf_vma (abfd, names, p->addend);
   1981 	  names += strlen (names);
   1982 	}
   1983       memcpy (names, "@plt", sizeof ("@plt"));
   1984       names += sizeof ("@plt");
   1985       ++s;
   1986       --p;
   1987     }
   1988 
   1989   /* Add a symbol at the start of the glink branch table.  */
   1990   memset (s, 0, sizeof *s);
   1991   s->the_bfd = abfd;
   1992   s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
   1993   s->section = glink;
   1994   s->value = glink_vma - glink->vma;
   1995   s->name = names;
   1996   memcpy (names, "__glink", sizeof ("__glink"));
   1997   names += sizeof ("__glink");
   1998   s++;
   1999   count++;
   2000 
   2001   if (resolv_vma)
   2002     {
   2003       /* Add a symbol for the glink PLT resolver.  */
   2004       memset (s, 0, sizeof *s);
   2005       s->the_bfd = abfd;
   2006       s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
   2007       s->section = glink;
   2008       s->value = resolv_vma - glink->vma;
   2009       s->name = names;
   2010       memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
   2011       names += sizeof ("__glink_PLTresolve");
   2012       s++;
   2013       count++;
   2014     }
   2015 
   2016   return count;
   2017 }
   2018 
   2019 /* The following functions are specific to the ELF linker, while
   2021    functions above are used generally.  They appear in this file more
   2022    or less in the order in which they are called.  eg.
   2023    ppc_elf_check_relocs is called early in the link process,
   2024    ppc_elf_finish_dynamic_sections is one of the last functions
   2025    called.  */
   2026 
   2027 /* Track PLT entries needed for a given symbol.  We might need more
   2028    than one glink entry per symbol when generating a pic binary.  */
   2029 struct plt_entry
   2030 {
   2031   struct plt_entry *next;
   2032 
   2033   /* -fPIC uses multiple GOT sections, one per file, called ".got2".
   2034      This field stores the offset into .got2 used to initialise the
   2035      GOT pointer reg.  It will always be at least 32768.  (Current
   2036      gcc always uses an offset of 32768, but ld -r will pack .got2
   2037      sections together resulting in larger offsets).  */
   2038   bfd_vma addend;
   2039 
   2040   /* The .got2 section.  */
   2041   asection *sec;
   2042 
   2043   /* PLT refcount or offset.  */
   2044   union
   2045     {
   2046       bfd_signed_vma refcount;
   2047       bfd_vma offset;
   2048     } plt;
   2049 
   2050   /* .glink stub offset.  */
   2051   bfd_vma glink_offset;
   2052 };
   2053 
   2054 /* Of those relocs that might be copied as dynamic relocs, this
   2055    function selects those that must be copied when linking a shared
   2056    library or PIE, even when the symbol is local.  */
   2057 
   2058 static int
   2059 must_be_dyn_reloc (struct bfd_link_info *info,
   2060 		   enum elf_ppc_reloc_type r_type)
   2061 {
   2062   switch (r_type)
   2063     {
   2064     default:
   2065       /* Only relative relocs can be resolved when the object load
   2066 	 address isn't fixed.  DTPREL32 is excluded because the
   2067 	 dynamic linker needs to differentiate global dynamic from
   2068 	 local dynamic __tls_index pairs when PPC_OPT_TLS is set.  */
   2069       return 1;
   2070 
   2071     case R_PPC_REL24:
   2072     case R_PPC_REL14:
   2073     case R_PPC_REL14_BRTAKEN:
   2074     case R_PPC_REL14_BRNTAKEN:
   2075     case R_PPC_REL32:
   2076       return 0;
   2077 
   2078     case R_PPC_TPREL32:
   2079     case R_PPC_TPREL16:
   2080     case R_PPC_TPREL16_LO:
   2081     case R_PPC_TPREL16_HI:
   2082     case R_PPC_TPREL16_HA:
   2083       /* These relocations are relative but in a shared library the
   2084 	 linker doesn't know the thread pointer base.  */
   2085       return bfd_link_dll (info);
   2086     }
   2087 }
   2088 
   2089 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
   2090    copying dynamic variables from a shared lib into an app's dynbss
   2091    section, and instead use a dynamic relocation to point into the
   2092    shared lib.  */
   2093 #define ELIMINATE_COPY_RELOCS 1
   2094 
   2095 /* Used to track dynamic relocations for local symbols.  */
   2096 struct ppc_dyn_relocs
   2097 {
   2098   struct ppc_dyn_relocs *next;
   2099 
   2100   /* The input section of the reloc.  */
   2101   asection *sec;
   2102 
   2103   /* Total number of relocs copied for the input section.  */
   2104   unsigned int count : 31;
   2105 
   2106   /* Whether this entry is for STT_GNU_IFUNC symbols.  */
   2107   unsigned int ifunc : 1;
   2108 };
   2109 
   2110 /* PPC ELF linker hash entry.  */
   2111 
   2112 struct ppc_elf_link_hash_entry
   2113 {
   2114   struct elf_link_hash_entry elf;
   2115 
   2116   /* If this symbol is used in the linker created sections, the processor
   2117      specific backend uses this field to map the field into the offset
   2118      from the beginning of the section.  */
   2119   elf_linker_section_pointers_t *linker_section_pointer;
   2120 
   2121   /* Track dynamic relocs copied for this symbol.  */
   2122   struct elf_dyn_relocs *dyn_relocs;
   2123 
   2124   /* Contexts in which symbol is used in the GOT.
   2125      Bits are or'd into the mask as the corresponding relocs are
   2126      encountered during check_relocs, with TLS_TLS being set when any
   2127      of the other TLS bits are set.  tls_optimize clears bits when
   2128      optimizing to indicate the corresponding GOT entry type is not
   2129      needed.  If set, TLS_TLS is never cleared.  tls_optimize may also
   2130      set TLS_GDIE when a GD reloc turns into an IE one.
   2131      These flags are also kept for local symbols.  */
   2132 #define TLS_TLS		 1	/* Any TLS reloc.  */
   2133 #define TLS_GD		 2	/* GD reloc. */
   2134 #define TLS_LD		 4	/* LD reloc. */
   2135 #define TLS_TPREL	 8	/* TPREL reloc, => IE. */
   2136 #define TLS_DTPREL	16	/* DTPREL reloc, => LD. */
   2137 #define TLS_MARK	32	/* __tls_get_addr call marked. */
   2138 #define TLS_GDIE	64	/* GOT TPREL reloc resulting from GD->IE. */
   2139   unsigned char tls_mask;
   2140 
   2141   /* The above field is also used to mark function symbols.  In which
   2142      case TLS_TLS will be 0.  */
   2143 #define PLT_IFUNC	 2	/* STT_GNU_IFUNC.  */
   2144 #define PLT_KEEP	 4	/* inline plt call requires plt entry.  */
   2145 #define NON_GOT        256	/* local symbol plt, not stored.  */
   2146 
   2147   /* Nonzero if we have seen a small data relocation referring to this
   2148      symbol.  */
   2149   unsigned char has_sda_refs : 1;
   2150 
   2151   /* Flag use of given relocations.  */
   2152   unsigned char has_addr16_ha : 1;
   2153   unsigned char has_addr16_lo : 1;
   2154 };
   2155 
   2156 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
   2157 
   2158 /* PPC ELF linker hash table.  */
   2159 
   2160 struct ppc_elf_link_hash_table
   2161 {
   2162   struct elf_link_hash_table elf;
   2163 
   2164   /* Various options passed from the linker.  */
   2165   struct ppc_elf_params *params;
   2166 
   2167   /* Short-cuts to get to dynamic linker sections.  */
   2168   asection *glink;
   2169   asection *dynsbss;
   2170   asection *relsbss;
   2171   elf_linker_section_t sdata[2];
   2172   asection *sbss;
   2173   asection *glink_eh_frame;
   2174   asection *pltlocal;
   2175   asection *relpltlocal;
   2176 
   2177   /* The (unloaded but important) .rela.plt.unloaded on VxWorks.  */
   2178   asection *srelplt2;
   2179 
   2180   /* Shortcut to __tls_get_addr.  */
   2181   struct elf_link_hash_entry *tls_get_addr;
   2182 
   2183   /* The bfd that forced an old-style PLT.  */
   2184   bfd *old_bfd;
   2185 
   2186   /* TLS local dynamic got entry handling.  */
   2187   union {
   2188     bfd_signed_vma refcount;
   2189     bfd_vma offset;
   2190   } tlsld_got;
   2191 
   2192   /* Offset of branch table to PltResolve function in glink.  */
   2193   bfd_vma glink_pltresolve;
   2194 
   2195   /* Size of reserved GOT entries.  */
   2196   unsigned int got_header_size;
   2197   /* Non-zero if allocating the header left a gap.  */
   2198   unsigned int got_gap;
   2199 
   2200   /* The type of PLT we have chosen to use.  */
   2201   enum ppc_elf_plt_type plt_type;
   2202 
   2203   /* True if the target system is VxWorks.  */
   2204   unsigned int is_vxworks:1;
   2205 
   2206   /* Whether there exist local gnu indirect function resolvers,
   2207      referenced by dynamic relocations.  */
   2208   unsigned int local_ifunc_resolver:1;
   2209   unsigned int maybe_local_ifunc_resolver:1;
   2210 
   2211   /* Set if tls optimization is enabled.  */
   2212   unsigned int do_tls_opt:1;
   2213 
   2214   /* Set if inline plt calls should be converted to direct calls.  */
   2215   unsigned int can_convert_all_inline_plt:1;
   2216 
   2217   /* The size of PLT entries.  */
   2218   int plt_entry_size;
   2219   /* The distance between adjacent PLT slots.  */
   2220   int plt_slot_size;
   2221   /* The size of the first PLT entry.  */
   2222   int plt_initial_entry_size;
   2223 
   2224   /* Small local sym cache.  */
   2225   struct sym_cache sym_cache;
   2226 };
   2227 
   2228 /* Rename some of the generic section flags to better document how they
   2229    are used for ppc32.  The flags are only valid for ppc32 elf objects.  */
   2230 
   2231 /* Nonzero if this section has TLS related relocations.  */
   2232 #define has_tls_reloc sec_flg0
   2233 
   2234 /* Nonzero if this section has a call to __tls_get_addr lacking marker
   2235    relocs.  */
   2236 #define nomark_tls_get_addr sec_flg1
   2237 
   2238   /* Flag set when PLTCALL relocs are detected.  */
   2239 #define has_pltcall sec_flg2
   2240 
   2241 /* Get the PPC ELF linker hash table from a link_info structure.  */
   2242 
   2243 #define ppc_elf_hash_table(p) \
   2244   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
   2245   == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
   2246 
   2247 /* Create an entry in a PPC ELF linker hash table.  */
   2248 
   2249 static struct bfd_hash_entry *
   2250 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
   2251 			   struct bfd_hash_table *table,
   2252 			   const char *string)
   2253 {
   2254   /* Allocate the structure if it has not already been allocated by a
   2255      subclass.  */
   2256   if (entry == NULL)
   2257     {
   2258       entry = bfd_hash_allocate (table,
   2259 				 sizeof (struct ppc_elf_link_hash_entry));
   2260       if (entry == NULL)
   2261 	return entry;
   2262     }
   2263 
   2264   /* Call the allocation method of the superclass.  */
   2265   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
   2266   if (entry != NULL)
   2267     {
   2268       ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
   2269       ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
   2270       ppc_elf_hash_entry (entry)->tls_mask = 0;
   2271       ppc_elf_hash_entry (entry)->has_sda_refs = 0;
   2272     }
   2273 
   2274   return entry;
   2275 }
   2276 
   2277 /* Create a PPC ELF linker hash table.  */
   2278 
   2279 static struct bfd_link_hash_table *
   2280 ppc_elf_link_hash_table_create (bfd *abfd)
   2281 {
   2282   struct ppc_elf_link_hash_table *ret;
   2283   static struct ppc_elf_params default_params
   2284     = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
   2285 
   2286   ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
   2287   if (ret == NULL)
   2288     return NULL;
   2289 
   2290   if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
   2291 				      ppc_elf_link_hash_newfunc,
   2292 				      sizeof (struct ppc_elf_link_hash_entry),
   2293 				      PPC32_ELF_DATA))
   2294     {
   2295       free (ret);
   2296       return NULL;
   2297     }
   2298 
   2299   ret->elf.init_plt_refcount.refcount = 0;
   2300   ret->elf.init_plt_refcount.glist = NULL;
   2301   ret->elf.init_plt_offset.offset = 0;
   2302   ret->elf.init_plt_offset.glist = NULL;
   2303 
   2304   ret->params = &default_params;
   2305 
   2306   ret->sdata[0].name = ".sdata";
   2307   ret->sdata[0].sym_name = "_SDA_BASE_";
   2308   ret->sdata[0].bss_name = ".sbss";
   2309 
   2310   ret->sdata[1].name = ".sdata2";
   2311   ret->sdata[1].sym_name = "_SDA2_BASE_";
   2312   ret->sdata[1].bss_name = ".sbss2";
   2313 
   2314   ret->plt_entry_size = 12;
   2315   ret->plt_slot_size = 8;
   2316   ret->plt_initial_entry_size = 72;
   2317 
   2318   return &ret->elf.root;
   2319 }
   2320 
   2321 /* Hook linker params into hash table.  */
   2322 
   2323 void
   2324 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
   2325 {
   2326   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   2327 
   2328   if (htab)
   2329     htab->params = params;
   2330   params->pagesize_p2 = bfd_log2 (params->pagesize);
   2331 }
   2332 
   2333 /* Create .got and the related sections.  */
   2334 
   2335 static bfd_boolean
   2336 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
   2337 {
   2338   struct ppc_elf_link_hash_table *htab;
   2339 
   2340   if (!_bfd_elf_create_got_section (abfd, info))
   2341     return FALSE;
   2342 
   2343   htab = ppc_elf_hash_table (info);
   2344   if (!htab->is_vxworks)
   2345     {
   2346       /* The powerpc .got has a blrl instruction in it.  Mark it
   2347 	 executable.  */
   2348       flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
   2349 			| SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2350       if (!bfd_set_section_flags (htab->elf.sgot, flags))
   2351 	return FALSE;
   2352     }
   2353 
   2354   return TRUE;
   2355 }
   2356 
   2357 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
   2358    R_PPC_EMB_SDA2I16 pointers.  These sections become part of .sdata
   2359    and .sdata2.  Create _SDA_BASE_ and _SDA2_BASE too.  */
   2360 
   2361 static bfd_boolean
   2362 ppc_elf_create_linker_section (bfd *abfd,
   2363 			       struct bfd_link_info *info,
   2364 			       flagword flags,
   2365 			       elf_linker_section_t *lsect)
   2366 {
   2367   asection *s;
   2368 
   2369   flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
   2370 	    | SEC_LINKER_CREATED);
   2371 
   2372   s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
   2373   if (s == NULL)
   2374     return FALSE;
   2375   lsect->section = s;
   2376 
   2377   /* Define the sym on the first section of this name.  */
   2378   s = bfd_get_section_by_name (abfd, lsect->name);
   2379 
   2380   lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
   2381   if (lsect->sym == NULL)
   2382     return FALSE;
   2383   lsect->sym->root.u.def.value = 0x8000;
   2384   return TRUE;
   2385 }
   2386 
   2387 static bfd_boolean
   2388 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
   2389 {
   2390   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   2391   asection *s;
   2392   flagword flags;
   2393   int p2align;
   2394 
   2395   flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
   2396 	   | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2397   s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
   2398   htab->glink = s;
   2399   p2align = htab->params->ppc476_workaround ? 6 : 4;
   2400   if (p2align < htab->params->plt_stub_align)
   2401     p2align = htab->params->plt_stub_align;
   2402   if (s == NULL
   2403       || !bfd_set_section_alignment (s, p2align))
   2404     return FALSE;
   2405 
   2406   if (!info->no_ld_generated_unwind_info)
   2407     {
   2408       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2409 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2410       s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
   2411       htab->glink_eh_frame = s;
   2412       if (s == NULL
   2413 	  || !bfd_set_section_alignment (s, 2))
   2414 	return FALSE;
   2415     }
   2416 
   2417   flags = SEC_ALLOC | SEC_LINKER_CREATED;
   2418   s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
   2419   htab->elf.iplt = s;
   2420   if (s == NULL
   2421       || !bfd_set_section_alignment (s, 4))
   2422     return FALSE;
   2423 
   2424   flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2425 	   | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2426   s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
   2427   htab->elf.irelplt = s;
   2428   if (s == NULL
   2429       || ! bfd_set_section_alignment (s, 2))
   2430     return FALSE;
   2431 
   2432   /* Local plt entries.  */
   2433   flags = (SEC_ALLOC | SEC_LOAD
   2434 	   | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2435   htab->pltlocal = bfd_make_section_anyway_with_flags (abfd, ".branch_lt",
   2436 						       flags);
   2437   if (htab->pltlocal == NULL
   2438       || !bfd_set_section_alignment (htab->pltlocal, 2))
   2439     return FALSE;
   2440 
   2441   if (bfd_link_pic (info))
   2442     {
   2443       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
   2444 	       | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2445       htab->relpltlocal
   2446 	= bfd_make_section_anyway_with_flags (abfd, ".rela.branch_lt", flags);
   2447       if (htab->relpltlocal == NULL
   2448 	  || !bfd_set_section_alignment (htab->relpltlocal, 2))
   2449 	return FALSE;
   2450     }
   2451 
   2452   if (!ppc_elf_create_linker_section (abfd, info, 0,
   2453 				      &htab->sdata[0]))
   2454     return FALSE;
   2455 
   2456   if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
   2457 				      &htab->sdata[1]))
   2458     return FALSE;
   2459 
   2460   return TRUE;
   2461 }
   2462 
   2463 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
   2464    to output sections (just like _bfd_elf_create_dynamic_sections has
   2465    to create .dynbss and .rela.bss).  */
   2466 
   2467 static bfd_boolean
   2468 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
   2469 {
   2470   struct ppc_elf_link_hash_table *htab;
   2471   asection *s;
   2472   flagword flags;
   2473 
   2474   htab = ppc_elf_hash_table (info);
   2475 
   2476   if (htab->elf.sgot == NULL
   2477       && !ppc_elf_create_got (abfd, info))
   2478     return FALSE;
   2479 
   2480   if (!_bfd_elf_create_dynamic_sections (abfd, info))
   2481     return FALSE;
   2482 
   2483   if (htab->glink == NULL
   2484       && !ppc_elf_create_glink (abfd, info))
   2485     return FALSE;
   2486 
   2487   s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
   2488 					  SEC_ALLOC | SEC_LINKER_CREATED);
   2489   htab->dynsbss = s;
   2490   if (s == NULL)
   2491     return FALSE;
   2492 
   2493   if (! bfd_link_pic (info))
   2494     {
   2495       flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
   2496 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   2497       s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
   2498       htab->relsbss = s;
   2499       if (s == NULL
   2500 	  || !bfd_set_section_alignment (s, 2))
   2501 	return FALSE;
   2502     }
   2503 
   2504   if (htab->is_vxworks
   2505       && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
   2506     return FALSE;
   2507 
   2508   s = htab->elf.splt;
   2509   flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
   2510   if (htab->plt_type == PLT_VXWORKS)
   2511     /* The VxWorks PLT is a loaded section with contents.  */
   2512     flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
   2513   return bfd_set_section_flags (s, flags);
   2514 }
   2515 
   2516 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
   2517 
   2518 static void
   2519 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
   2520 			      struct elf_link_hash_entry *dir,
   2521 			      struct elf_link_hash_entry *ind)
   2522 {
   2523   struct ppc_elf_link_hash_entry *edir, *eind;
   2524 
   2525   edir = (struct ppc_elf_link_hash_entry *) dir;
   2526   eind = (struct ppc_elf_link_hash_entry *) ind;
   2527 
   2528   edir->tls_mask |= eind->tls_mask;
   2529   edir->has_sda_refs |= eind->has_sda_refs;
   2530 
   2531   if (edir->elf.versioned != versioned_hidden)
   2532     edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
   2533   edir->elf.ref_regular |= eind->elf.ref_regular;
   2534   edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
   2535   edir->elf.non_got_ref |= eind->elf.non_got_ref;
   2536   edir->elf.needs_plt |= eind->elf.needs_plt;
   2537   edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
   2538 
   2539   /* If we were called to copy over info for a weak sym, that's all.  */
   2540   if (eind->elf.root.type != bfd_link_hash_indirect)
   2541     return;
   2542 
   2543   if (eind->dyn_relocs != NULL)
   2544     {
   2545       if (edir->dyn_relocs != NULL)
   2546 	{
   2547 	  struct elf_dyn_relocs **pp;
   2548 	  struct elf_dyn_relocs *p;
   2549 
   2550 	  /* Add reloc counts against the indirect sym to the direct sym
   2551 	     list.  Merge any entries against the same section.  */
   2552 	  for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
   2553 	    {
   2554 	      struct elf_dyn_relocs *q;
   2555 
   2556 	      for (q = edir->dyn_relocs; q != NULL; q = q->next)
   2557 		if (q->sec == p->sec)
   2558 		  {
   2559 		    q->pc_count += p->pc_count;
   2560 		    q->count += p->count;
   2561 		    *pp = p->next;
   2562 		    break;
   2563 		  }
   2564 	      if (q == NULL)
   2565 		pp = &p->next;
   2566 	    }
   2567 	  *pp = edir->dyn_relocs;
   2568 	}
   2569 
   2570       edir->dyn_relocs = eind->dyn_relocs;
   2571       eind->dyn_relocs = NULL;
   2572     }
   2573 
   2574   /* Copy over the GOT refcount entries that we may have already seen to
   2575      the symbol which just became indirect.  */
   2576   edir->elf.got.refcount += eind->elf.got.refcount;
   2577   eind->elf.got.refcount = 0;
   2578 
   2579   /* And plt entries.  */
   2580   if (eind->elf.plt.plist != NULL)
   2581     {
   2582       if (edir->elf.plt.plist != NULL)
   2583 	{
   2584 	  struct plt_entry **entp;
   2585 	  struct plt_entry *ent;
   2586 
   2587 	  for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
   2588 	    {
   2589 	      struct plt_entry *dent;
   2590 
   2591 	      for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
   2592 		if (dent->sec == ent->sec && dent->addend == ent->addend)
   2593 		  {
   2594 		    dent->plt.refcount += ent->plt.refcount;
   2595 		    *entp = ent->next;
   2596 		    break;
   2597 		  }
   2598 	      if (dent == NULL)
   2599 		entp = &ent->next;
   2600 	    }
   2601 	  *entp = edir->elf.plt.plist;
   2602 	}
   2603 
   2604       edir->elf.plt.plist = eind->elf.plt.plist;
   2605       eind->elf.plt.plist = NULL;
   2606     }
   2607 
   2608   if (eind->elf.dynindx != -1)
   2609     {
   2610       if (edir->elf.dynindx != -1)
   2611 	_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
   2612 				edir->elf.dynstr_index);
   2613       edir->elf.dynindx = eind->elf.dynindx;
   2614       edir->elf.dynstr_index = eind->elf.dynstr_index;
   2615       eind->elf.dynindx = -1;
   2616       eind->elf.dynstr_index = 0;
   2617     }
   2618 }
   2619 
   2620 /* Hook called by the linker routine which adds symbols from an object
   2621    file.  We use it to put .comm items in .sbss, and not .bss.  */
   2622 
   2623 static bfd_boolean
   2624 ppc_elf_add_symbol_hook (bfd *abfd,
   2625 			 struct bfd_link_info *info,
   2626 			 Elf_Internal_Sym *sym,
   2627 			 const char **namep ATTRIBUTE_UNUSED,
   2628 			 flagword *flagsp ATTRIBUTE_UNUSED,
   2629 			 asection **secp,
   2630 			 bfd_vma *valp)
   2631 {
   2632   if (sym->st_shndx == SHN_COMMON
   2633       && !bfd_link_relocatable (info)
   2634       && is_ppc_elf (info->output_bfd)
   2635       && sym->st_size <= elf_gp_size (abfd))
   2636     {
   2637       /* Common symbols less than or equal to -G nn bytes are automatically
   2638 	 put into .sbss.  */
   2639       struct ppc_elf_link_hash_table *htab;
   2640 
   2641       htab = ppc_elf_hash_table (info);
   2642       if (htab->sbss == NULL)
   2643 	{
   2644 	  flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
   2645 
   2646 	  if (!htab->elf.dynobj)
   2647 	    htab->elf.dynobj = abfd;
   2648 
   2649 	  htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
   2650 							   ".sbss",
   2651 							   flags);
   2652 	  if (htab->sbss == NULL)
   2653 	    return FALSE;
   2654 	}
   2655 
   2656       *secp = htab->sbss;
   2657       *valp = sym->st_size;
   2658     }
   2659 
   2660   return TRUE;
   2661 }
   2662 
   2663 /* Find a linker generated pointer with a given addend and type.  */
   2665 
   2666 static elf_linker_section_pointers_t *
   2667 elf_find_pointer_linker_section
   2668   (elf_linker_section_pointers_t *linker_pointers,
   2669    bfd_vma addend,
   2670    elf_linker_section_t *lsect)
   2671 {
   2672   for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
   2673     if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
   2674       return linker_pointers;
   2675 
   2676   return NULL;
   2677 }
   2678 
   2679 /* Allocate a pointer to live in a linker created section.  */
   2680 
   2681 static bfd_boolean
   2682 elf_allocate_pointer_linker_section (bfd *abfd,
   2683 				     elf_linker_section_t *lsect,
   2684 				     struct elf_link_hash_entry *h,
   2685 				     const Elf_Internal_Rela *rel)
   2686 {
   2687   elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
   2688   elf_linker_section_pointers_t *linker_section_ptr;
   2689   unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
   2690   bfd_size_type amt;
   2691 
   2692   BFD_ASSERT (lsect != NULL);
   2693 
   2694   /* Is this a global symbol?  */
   2695   if (h != NULL)
   2696     {
   2697       struct ppc_elf_link_hash_entry *eh;
   2698 
   2699       /* Has this symbol already been allocated?  If so, our work is done.  */
   2700       eh = (struct ppc_elf_link_hash_entry *) h;
   2701       if (elf_find_pointer_linker_section (eh->linker_section_pointer,
   2702 					   rel->r_addend,
   2703 					   lsect))
   2704 	return TRUE;
   2705 
   2706       ptr_linker_section_ptr = &eh->linker_section_pointer;
   2707     }
   2708   else
   2709     {
   2710       BFD_ASSERT (is_ppc_elf (abfd));
   2711 
   2712       /* Allocation of a pointer to a local symbol.  */
   2713       elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
   2714 
   2715       /* Allocate a table to hold the local symbols if first time.  */
   2716       if (!ptr)
   2717 	{
   2718 	  unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
   2719 
   2720 	  amt = num_symbols;
   2721 	  amt *= sizeof (elf_linker_section_pointers_t *);
   2722 	  ptr = bfd_zalloc (abfd, amt);
   2723 
   2724 	  if (!ptr)
   2725 	    return FALSE;
   2726 
   2727 	  elf_local_ptr_offsets (abfd) = ptr;
   2728 	}
   2729 
   2730       /* Has this symbol already been allocated?  If so, our work is done.  */
   2731       if (elf_find_pointer_linker_section (ptr[r_symndx],
   2732 					   rel->r_addend,
   2733 					   lsect))
   2734 	return TRUE;
   2735 
   2736       ptr_linker_section_ptr = &ptr[r_symndx];
   2737     }
   2738 
   2739   /* Allocate space for a pointer in the linker section, and allocate
   2740      a new pointer record from internal memory.  */
   2741   BFD_ASSERT (ptr_linker_section_ptr != NULL);
   2742   amt = sizeof (elf_linker_section_pointers_t);
   2743   linker_section_ptr = bfd_alloc (abfd, amt);
   2744 
   2745   if (!linker_section_ptr)
   2746     return FALSE;
   2747 
   2748   linker_section_ptr->next = *ptr_linker_section_ptr;
   2749   linker_section_ptr->addend = rel->r_addend;
   2750   linker_section_ptr->lsect = lsect;
   2751   *ptr_linker_section_ptr = linker_section_ptr;
   2752 
   2753   if (!bfd_set_section_alignment (lsect->section, 2))
   2754     return FALSE;
   2755   linker_section_ptr->offset = lsect->section->size;
   2756   lsect->section->size += 4;
   2757 
   2758 #ifdef DEBUG
   2759   fprintf (stderr,
   2760 	   "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
   2761 	   lsect->name, (long) linker_section_ptr->offset,
   2762 	   (long) lsect->section->size);
   2763 #endif
   2764 
   2765   return TRUE;
   2766 }
   2767 
   2768 static struct plt_entry **
   2769 update_local_sym_info (bfd *abfd,
   2770 		       Elf_Internal_Shdr *symtab_hdr,
   2771 		       unsigned long r_symndx,
   2772 		       int tls_type)
   2773 {
   2774   bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
   2775   struct plt_entry **local_plt;
   2776   unsigned char *local_got_tls_masks;
   2777 
   2778   if (local_got_refcounts == NULL)
   2779     {
   2780       bfd_size_type size = symtab_hdr->sh_info;
   2781 
   2782       size *= (sizeof (*local_got_refcounts)
   2783 	       + sizeof (*local_plt)
   2784 	       + sizeof (*local_got_tls_masks));
   2785       local_got_refcounts = bfd_zalloc (abfd, size);
   2786       if (local_got_refcounts == NULL)
   2787 	return NULL;
   2788       elf_local_got_refcounts (abfd) = local_got_refcounts;
   2789     }
   2790 
   2791   local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
   2792   local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
   2793   local_got_tls_masks[r_symndx] |= tls_type & 0xff;
   2794   if ((tls_type & NON_GOT) == 0)
   2795     local_got_refcounts[r_symndx] += 1;
   2796   return local_plt + r_symndx;
   2797 }
   2798 
   2799 static bfd_boolean
   2800 update_plt_info (bfd *abfd, struct plt_entry **plist,
   2801 		 asection *sec, bfd_vma addend)
   2802 {
   2803   struct plt_entry *ent;
   2804 
   2805   if (addend < 32768)
   2806     sec = NULL;
   2807   for (ent = *plist; ent != NULL; ent = ent->next)
   2808     if (ent->sec == sec && ent->addend == addend)
   2809       break;
   2810   if (ent == NULL)
   2811     {
   2812       bfd_size_type amt = sizeof (*ent);
   2813       ent = bfd_alloc (abfd, amt);
   2814       if (ent == NULL)
   2815 	return FALSE;
   2816       ent->next = *plist;
   2817       ent->sec = sec;
   2818       ent->addend = addend;
   2819       ent->plt.refcount = 0;
   2820       *plist = ent;
   2821     }
   2822   ent->plt.refcount += 1;
   2823   return TRUE;
   2824 }
   2825 
   2826 static struct plt_entry *
   2827 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
   2828 {
   2829   struct plt_entry *ent;
   2830 
   2831   if (addend < 32768)
   2832     sec = NULL;
   2833   for (ent = *plist; ent != NULL; ent = ent->next)
   2834     if (ent->sec == sec && ent->addend == addend)
   2835       break;
   2836   return ent;
   2837 }
   2838 
   2839 static bfd_boolean
   2840 is_branch_reloc (enum elf_ppc_reloc_type r_type)
   2841 {
   2842   return (r_type == R_PPC_PLTREL24
   2843 	  || r_type == R_PPC_LOCAL24PC
   2844 	  || r_type == R_PPC_REL24
   2845 	  || r_type == R_PPC_REL14
   2846 	  || r_type == R_PPC_REL14_BRTAKEN
   2847 	  || r_type == R_PPC_REL14_BRNTAKEN
   2848 	  || r_type == R_PPC_ADDR24
   2849 	  || r_type == R_PPC_ADDR14
   2850 	  || r_type == R_PPC_ADDR14_BRTAKEN
   2851 	  || r_type == R_PPC_ADDR14_BRNTAKEN
   2852 	  || r_type == R_PPC_VLE_REL24);
   2853 }
   2854 
   2855 /* Relocs on inline plt call sequence insns prior to the call.  */
   2856 
   2857 static bfd_boolean
   2858 is_plt_seq_reloc (enum elf_ppc_reloc_type r_type)
   2859 {
   2860   return (r_type == R_PPC_PLT16_HA
   2861 	  || r_type == R_PPC_PLT16_HI
   2862 	  || r_type == R_PPC_PLT16_LO
   2863 	  || r_type == R_PPC_PLTSEQ);
   2864 }
   2865 
   2866 static void
   2867 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
   2868 {
   2869   _bfd_error_handler
   2870     /* xgettext:c-format */
   2871     (_("%pB: relocation %s cannot be used when making a shared object"),
   2872      abfd,
   2873      ppc_elf_howto_table[r_type]->name);
   2874   bfd_set_error (bfd_error_bad_value);
   2875 }
   2876 
   2877 /* Look through the relocs for a section during the first phase, and
   2878    allocate space in the global offset table or procedure linkage
   2879    table.  */
   2880 
   2881 static bfd_boolean
   2882 ppc_elf_check_relocs (bfd *abfd,
   2883 		      struct bfd_link_info *info,
   2884 		      asection *sec,
   2885 		      const Elf_Internal_Rela *relocs)
   2886 {
   2887   struct ppc_elf_link_hash_table *htab;
   2888   Elf_Internal_Shdr *symtab_hdr;
   2889   struct elf_link_hash_entry **sym_hashes;
   2890   const Elf_Internal_Rela *rel;
   2891   const Elf_Internal_Rela *rel_end;
   2892   asection *got2, *sreloc;
   2893   struct elf_link_hash_entry *tga;
   2894 
   2895   if (bfd_link_relocatable (info))
   2896     return TRUE;
   2897 
   2898   /* Don't do anything special with non-loaded, non-alloced sections.
   2899      In particular, any relocs in such sections should not affect GOT
   2900      and PLT reference counting (ie. we don't allow them to create GOT
   2901      or PLT entries), there's no possibility or desire to optimize TLS
   2902      relocs, and there's not much point in propagating relocs to shared
   2903      libs that the dynamic linker won't relocate.  */
   2904   if ((sec->flags & SEC_ALLOC) == 0)
   2905     return TRUE;
   2906 
   2907 #ifdef DEBUG
   2908   _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
   2909 		      sec, abfd);
   2910 #endif
   2911 
   2912   BFD_ASSERT (is_ppc_elf (abfd));
   2913 
   2914   /* Initialize howto table if not already done.  */
   2915   if (!ppc_elf_howto_table[R_PPC_ADDR32])
   2916     ppc_elf_howto_init ();
   2917 
   2918   htab = ppc_elf_hash_table (info);
   2919   if (htab->glink == NULL)
   2920     {
   2921       if (htab->elf.dynobj == NULL)
   2922 	htab->elf.dynobj = abfd;
   2923       if (!ppc_elf_create_glink (htab->elf.dynobj, info))
   2924 	return FALSE;
   2925     }
   2926   tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
   2927 			      FALSE, FALSE, TRUE);
   2928   symtab_hdr = &elf_symtab_hdr (abfd);
   2929   sym_hashes = elf_sym_hashes (abfd);
   2930   got2 = bfd_get_section_by_name (abfd, ".got2");
   2931   sreloc = NULL;
   2932 
   2933   rel_end = relocs + sec->reloc_count;
   2934   for (rel = relocs; rel < rel_end; rel++)
   2935     {
   2936       unsigned long r_symndx;
   2937       enum elf_ppc_reloc_type r_type;
   2938       struct elf_link_hash_entry *h;
   2939       int tls_type;
   2940       struct plt_entry **ifunc;
   2941       struct plt_entry **pltent;
   2942       bfd_vma addend;
   2943 
   2944       r_symndx = ELF32_R_SYM (rel->r_info);
   2945       if (r_symndx < symtab_hdr->sh_info)
   2946 	h = NULL;
   2947       else
   2948 	{
   2949 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   2950 	  while (h->root.type == bfd_link_hash_indirect
   2951 		 || h->root.type == bfd_link_hash_warning)
   2952 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   2953 	}
   2954 
   2955       /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
   2956 	 This shows up in particular in an R_PPC_ADDR32 in the eabi
   2957 	 startup code.  */
   2958       if (h != NULL
   2959 	  && htab->elf.sgot == NULL
   2960 	  && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
   2961 	{
   2962 	  if (htab->elf.dynobj == NULL)
   2963 	    htab->elf.dynobj = abfd;
   2964 	  if (!ppc_elf_create_got (htab->elf.dynobj, info))
   2965 	    return FALSE;
   2966 	  BFD_ASSERT (h == htab->elf.hgot);
   2967 	}
   2968 
   2969       tls_type = 0;
   2970       r_type = ELF32_R_TYPE (rel->r_info);
   2971       ifunc = NULL;
   2972       if (h == NULL && !htab->is_vxworks)
   2973 	{
   2974 	  Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   2975 							  abfd, r_symndx);
   2976 	  if (isym == NULL)
   2977 	    return FALSE;
   2978 
   2979 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   2980 	    {
   2981 	      /* Set PLT_IFUNC flag for this sym, no GOT entry yet.  */
   2982 	      ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
   2983 					     NON_GOT | PLT_IFUNC);
   2984 	      if (ifunc == NULL)
   2985 		return FALSE;
   2986 
   2987 	      /* STT_GNU_IFUNC symbols must have a PLT entry;
   2988 		 In a non-pie executable even when there are
   2989 		 no plt calls.  */
   2990 	      if (!bfd_link_pic (info)
   2991 		  || is_branch_reloc (r_type)
   2992 		  || r_type == R_PPC_PLT16_LO
   2993 		  || r_type == R_PPC_PLT16_HI
   2994 		  || r_type == R_PPC_PLT16_HA)
   2995 		{
   2996 		  addend = 0;
   2997 		  if (r_type == R_PPC_PLTREL24)
   2998 		    ppc_elf_tdata (abfd)->makes_plt_call = 1;
   2999 		  if (bfd_link_pic (info)
   3000 		      && (r_type == R_PPC_PLTREL24
   3001 			  || r_type == R_PPC_PLT16_LO
   3002 			  || r_type == R_PPC_PLT16_HI
   3003 			  || r_type == R_PPC_PLT16_HA))
   3004 		    addend = rel->r_addend;
   3005 		  if (!update_plt_info (abfd, ifunc, got2, addend))
   3006 		    return FALSE;
   3007 		}
   3008 	    }
   3009 	}
   3010 
   3011       if (!htab->is_vxworks
   3012 	  && is_branch_reloc (r_type)
   3013 	  && h != NULL
   3014 	  && h == tga)
   3015 	{
   3016 	  if (rel != relocs
   3017 	      && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
   3018 		  || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
   3019 	    /* We have a new-style __tls_get_addr call with a marker
   3020 	       reloc.  */
   3021 	    ;
   3022 	  else
   3023 	    /* Mark this section as having an old-style call.  */
   3024 	    sec->nomark_tls_get_addr = 1;
   3025 	}
   3026 
   3027       switch ((int)r_type)
   3028 	{
   3029 	case R_PPC_TLSGD:
   3030 	case R_PPC_TLSLD:
   3031 	  /* These special tls relocs tie a call to __tls_get_addr with
   3032 	     its parameter symbol.  */
   3033 	  if (h != NULL)
   3034 	    ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
   3035 	  else
   3036 	    if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
   3037 					NON_GOT | TLS_TLS | TLS_MARK))
   3038 	      return FALSE;
   3039 	  break;
   3040 
   3041 	case R_PPC_PLTSEQ:
   3042 	  break;
   3043 
   3044 	case R_PPC_GOT_TLSLD16:
   3045 	case R_PPC_GOT_TLSLD16_LO:
   3046 	case R_PPC_GOT_TLSLD16_HI:
   3047 	case R_PPC_GOT_TLSLD16_HA:
   3048 	  tls_type = TLS_TLS | TLS_LD;
   3049 	  goto dogottls;
   3050 
   3051 	case R_PPC_GOT_TLSGD16:
   3052 	case R_PPC_GOT_TLSGD16_LO:
   3053 	case R_PPC_GOT_TLSGD16_HI:
   3054 	case R_PPC_GOT_TLSGD16_HA:
   3055 	  tls_type = TLS_TLS | TLS_GD;
   3056 	  goto dogottls;
   3057 
   3058 	case R_PPC_GOT_TPREL16:
   3059 	case R_PPC_GOT_TPREL16_LO:
   3060 	case R_PPC_GOT_TPREL16_HI:
   3061 	case R_PPC_GOT_TPREL16_HA:
   3062 	  if (bfd_link_dll (info))
   3063 	    info->flags |= DF_STATIC_TLS;
   3064 	  tls_type = TLS_TLS | TLS_TPREL;
   3065 	  goto dogottls;
   3066 
   3067 	case R_PPC_GOT_DTPREL16:
   3068 	case R_PPC_GOT_DTPREL16_LO:
   3069 	case R_PPC_GOT_DTPREL16_HI:
   3070 	case R_PPC_GOT_DTPREL16_HA:
   3071 	  tls_type = TLS_TLS | TLS_DTPREL;
   3072 	dogottls:
   3073 	  sec->has_tls_reloc = 1;
   3074 	  /* Fall through.  */
   3075 
   3076 	  /* GOT16 relocations */
   3077 	case R_PPC_GOT16:
   3078 	case R_PPC_GOT16_LO:
   3079 	case R_PPC_GOT16_HI:
   3080 	case R_PPC_GOT16_HA:
   3081 	  /* This symbol requires a global offset table entry.  */
   3082 	  if (htab->elf.sgot == NULL)
   3083 	    {
   3084 	      if (htab->elf.dynobj == NULL)
   3085 		htab->elf.dynobj = abfd;
   3086 	      if (!ppc_elf_create_got (htab->elf.dynobj, info))
   3087 		return FALSE;
   3088 	    }
   3089 	  if (h != NULL)
   3090 	    {
   3091 	      h->got.refcount += 1;
   3092 	      ppc_elf_hash_entry (h)->tls_mask |= tls_type;
   3093 	    }
   3094 	  else
   3095 	    /* This is a global offset table entry for a local symbol.  */
   3096 	    if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
   3097 	      return FALSE;
   3098 
   3099 	  /* We may also need a plt entry if the symbol turns out to be
   3100 	     an ifunc.  */
   3101 	  if (h != NULL && !bfd_link_pic (info))
   3102 	    {
   3103 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3104 		return FALSE;
   3105 	    }
   3106 	  break;
   3107 
   3108 	  /* Indirect .sdata relocation.  */
   3109 	case R_PPC_EMB_SDAI16:
   3110 	  htab->sdata[0].sym->ref_regular = 1;
   3111 	  if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
   3112 						    h, rel))
   3113 	    return FALSE;
   3114 	  if (h != NULL)
   3115 	    {
   3116 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3117 	      h->non_got_ref = TRUE;
   3118 	    }
   3119 	  break;
   3120 
   3121 	  /* Indirect .sdata2 relocation.  */
   3122 	case R_PPC_EMB_SDA2I16:
   3123 	  if (!bfd_link_executable (info))
   3124 	    {
   3125 	      bad_shared_reloc (abfd, r_type);
   3126 	      return FALSE;
   3127 	    }
   3128 	  htab->sdata[1].sym->ref_regular = 1;
   3129 	  if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
   3130 						    h, rel))
   3131 	    return FALSE;
   3132 	  if (h != NULL)
   3133 	    {
   3134 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3135 	      h->non_got_ref = TRUE;
   3136 	    }
   3137 	  break;
   3138 
   3139 	case R_PPC_SDAREL16:
   3140 	  htab->sdata[0].sym->ref_regular = 1;
   3141 	  /* Fall through.  */
   3142 
   3143 	case R_PPC_VLE_SDAREL_LO16A:
   3144 	case R_PPC_VLE_SDAREL_LO16D:
   3145 	case R_PPC_VLE_SDAREL_HI16A:
   3146 	case R_PPC_VLE_SDAREL_HI16D:
   3147 	case R_PPC_VLE_SDAREL_HA16A:
   3148 	case R_PPC_VLE_SDAREL_HA16D:
   3149 	  if (h != NULL)
   3150 	    {
   3151 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3152 	      h->non_got_ref = TRUE;
   3153 	    }
   3154 	  break;
   3155 
   3156 	case R_PPC_VLE_REL8:
   3157 	case R_PPC_VLE_REL15:
   3158 	case R_PPC_VLE_REL24:
   3159 	case R_PPC_VLE_LO16A:
   3160 	case R_PPC_VLE_LO16D:
   3161 	case R_PPC_VLE_HI16A:
   3162 	case R_PPC_VLE_HI16D:
   3163 	case R_PPC_VLE_HA16A:
   3164 	case R_PPC_VLE_HA16D:
   3165 	case R_PPC_VLE_ADDR20:
   3166 	  break;
   3167 
   3168 	case R_PPC_EMB_SDA2REL:
   3169 	  if (!bfd_link_executable (info))
   3170 	    {
   3171 	      bad_shared_reloc (abfd, r_type);
   3172 	      return FALSE;
   3173 	    }
   3174 	  htab->sdata[1].sym->ref_regular = 1;
   3175 	  if (h != NULL)
   3176 	    {
   3177 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3178 	      h->non_got_ref = TRUE;
   3179 	    }
   3180 	  break;
   3181 
   3182 	case R_PPC_VLE_SDA21_LO:
   3183 	case R_PPC_VLE_SDA21:
   3184 	case R_PPC_EMB_SDA21:
   3185 	case R_PPC_EMB_RELSDA:
   3186 	  if (h != NULL)
   3187 	    {
   3188 	      ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
   3189 	      h->non_got_ref = TRUE;
   3190 	    }
   3191 	  break;
   3192 
   3193 	case R_PPC_EMB_NADDR32:
   3194 	case R_PPC_EMB_NADDR16:
   3195 	case R_PPC_EMB_NADDR16_LO:
   3196 	case R_PPC_EMB_NADDR16_HI:
   3197 	case R_PPC_EMB_NADDR16_HA:
   3198 	  if (h != NULL)
   3199 	    h->non_got_ref = TRUE;
   3200 	  break;
   3201 
   3202 	case R_PPC_PLTREL24:
   3203 	  if (h == NULL)
   3204 	    break;
   3205 	  ppc_elf_tdata (abfd)->makes_plt_call = 1;
   3206 	  goto pltentry;
   3207 
   3208 	case R_PPC_PLTCALL:
   3209 	  sec->has_pltcall = 1;
   3210 	  /* Fall through.  */
   3211 
   3212 	case R_PPC_PLT32:
   3213 	case R_PPC_PLTREL32:
   3214 	case R_PPC_PLT16_LO:
   3215 	case R_PPC_PLT16_HI:
   3216 	case R_PPC_PLT16_HA:
   3217 	pltentry:
   3218 #ifdef DEBUG
   3219 	  fprintf (stderr, "Reloc requires a PLT entry\n");
   3220 #endif
   3221 	  /* This symbol requires a procedure linkage table entry.  */
   3222 	  if (h == NULL)
   3223 	    {
   3224 	      pltent = update_local_sym_info (abfd, symtab_hdr, r_symndx,
   3225 					      NON_GOT | PLT_KEEP);
   3226 	      if (pltent == NULL)
   3227 		return FALSE;
   3228 	    }
   3229 	  else
   3230 	    {
   3231 	      if (r_type != R_PPC_PLTREL24)
   3232 		ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP;
   3233 	      h->needs_plt = 1;
   3234 	      pltent = &h->plt.plist;
   3235 	    }
   3236 	  addend = 0;
   3237 	  if (bfd_link_pic (info)
   3238 	      && (r_type == R_PPC_PLTREL24
   3239 		  || r_type == R_PPC_PLT16_LO
   3240 		  || r_type == R_PPC_PLT16_HI
   3241 		  || r_type == R_PPC_PLT16_HA))
   3242 	    addend = rel->r_addend;
   3243 	  if (!update_plt_info (abfd, pltent, got2, addend))
   3244 	    return FALSE;
   3245 	  break;
   3246 
   3247 	  /* The following relocations don't need to propagate the
   3248 	     relocation if linking a shared object since they are
   3249 	     section relative.  */
   3250 	case R_PPC_SECTOFF:
   3251 	case R_PPC_SECTOFF_LO:
   3252 	case R_PPC_SECTOFF_HI:
   3253 	case R_PPC_SECTOFF_HA:
   3254 	case R_PPC_DTPREL16:
   3255 	case R_PPC_DTPREL16_LO:
   3256 	case R_PPC_DTPREL16_HI:
   3257 	case R_PPC_DTPREL16_HA:
   3258 	case R_PPC_TOC16:
   3259 	  break;
   3260 
   3261 	case R_PPC_REL16:
   3262 	case R_PPC_REL16_LO:
   3263 	case R_PPC_REL16_HI:
   3264 	case R_PPC_REL16_HA:
   3265 	case R_PPC_REL16DX_HA:
   3266 	  ppc_elf_tdata (abfd)->has_rel16 = 1;
   3267 	  break;
   3268 
   3269 	  /* These are just markers.  */
   3270 	case R_PPC_TLS:
   3271 	case R_PPC_EMB_MRKREF:
   3272 	case R_PPC_NONE:
   3273 	case R_PPC_max:
   3274 	case R_PPC_RELAX:
   3275 	case R_PPC_RELAX_PLT:
   3276 	case R_PPC_RELAX_PLTREL24:
   3277 	case R_PPC_16DX_HA:
   3278 	  break;
   3279 
   3280 	  /* These should only appear in dynamic objects.  */
   3281 	case R_PPC_COPY:
   3282 	case R_PPC_GLOB_DAT:
   3283 	case R_PPC_JMP_SLOT:
   3284 	case R_PPC_RELATIVE:
   3285 	case R_PPC_IRELATIVE:
   3286 	  break;
   3287 
   3288 	  /* These aren't handled yet.  We'll report an error later.  */
   3289 	case R_PPC_ADDR30:
   3290 	case R_PPC_EMB_RELSEC16:
   3291 	case R_PPC_EMB_RELST_LO:
   3292 	case R_PPC_EMB_RELST_HI:
   3293 	case R_PPC_EMB_RELST_HA:
   3294 	case R_PPC_EMB_BIT_FLD:
   3295 	  break;
   3296 
   3297 	  /* This refers only to functions defined in the shared library.  */
   3298 	case R_PPC_LOCAL24PC:
   3299 	  if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
   3300 	    {
   3301 	      htab->plt_type = PLT_OLD;
   3302 	      htab->old_bfd = abfd;
   3303 	    }
   3304 	  if (h != NULL && h->type == STT_GNU_IFUNC)
   3305 	    {
   3306 	      h->needs_plt = 1;
   3307 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3308 		return FALSE;
   3309 	    }
   3310 	  break;
   3311 
   3312 	  /* This relocation describes the C++ object vtable hierarchy.
   3313 	     Reconstruct it for later use during GC.  */
   3314 	case R_PPC_GNU_VTINHERIT:
   3315 	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
   3316 	    return FALSE;
   3317 	  break;
   3318 
   3319 	  /* This relocation describes which C++ vtable entries are actually
   3320 	     used.  Record for later use during GC.  */
   3321 	case R_PPC_GNU_VTENTRY:
   3322 	  if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
   3323 	    return FALSE;
   3324 	  break;
   3325 
   3326 	  /* We shouldn't really be seeing TPREL32.  */
   3327 	case R_PPC_TPREL32:
   3328 	case R_PPC_TPREL16:
   3329 	case R_PPC_TPREL16_LO:
   3330 	case R_PPC_TPREL16_HI:
   3331 	case R_PPC_TPREL16_HA:
   3332 	  if (bfd_link_dll (info))
   3333 	    info->flags |= DF_STATIC_TLS;
   3334 	  goto dodyn;
   3335 
   3336 	  /* Nor these.  */
   3337 	case R_PPC_DTPMOD32:
   3338 	case R_PPC_DTPREL32:
   3339 	  goto dodyn;
   3340 
   3341 	case R_PPC_REL32:
   3342 	  if (h == NULL
   3343 	      && got2 != NULL
   3344 	      && (sec->flags & SEC_CODE) != 0
   3345 	      && bfd_link_pic (info)
   3346 	      && htab->plt_type == PLT_UNSET)
   3347 	    {
   3348 	      /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
   3349 		 the start of a function, which assembles to a REL32
   3350 		 reference to .got2.  If we detect one of these, then
   3351 		 force the old PLT layout because the linker cannot
   3352 		 reliably deduce the GOT pointer value needed for
   3353 		 PLT call stubs.  */
   3354 	      asection *s;
   3355 	      Elf_Internal_Sym *isym;
   3356 
   3357 	      isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   3358 					    abfd, r_symndx);
   3359 	      if (isym == NULL)
   3360 		return FALSE;
   3361 
   3362 	      s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   3363 	      if (s == got2)
   3364 		{
   3365 		  htab->plt_type = PLT_OLD;
   3366 		  htab->old_bfd = abfd;
   3367 		}
   3368 	    }
   3369 	  if (h == NULL || h == htab->elf.hgot)
   3370 	    break;
   3371 	  /* fall through */
   3372 
   3373 	case R_PPC_ADDR32:
   3374 	case R_PPC_ADDR16:
   3375 	case R_PPC_ADDR16_LO:
   3376 	case R_PPC_ADDR16_HI:
   3377 	case R_PPC_ADDR16_HA:
   3378 	case R_PPC_UADDR32:
   3379 	case R_PPC_UADDR16:
   3380 	  if (h != NULL && !bfd_link_pic (info))
   3381 	    {
   3382 	      /* We may need a plt entry if the symbol turns out to be
   3383 		 a function defined in a dynamic object.  */
   3384 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3385 		return FALSE;
   3386 
   3387 	      /* We may need a copy reloc too.  */
   3388 	      h->non_got_ref = 1;
   3389 	      h->pointer_equality_needed = 1;
   3390 	      if (r_type == R_PPC_ADDR16_HA)
   3391 		ppc_elf_hash_entry (h)->has_addr16_ha = 1;
   3392 	      if (r_type == R_PPC_ADDR16_LO)
   3393 		ppc_elf_hash_entry (h)->has_addr16_lo = 1;
   3394 	    }
   3395 	  goto dodyn;
   3396 
   3397 	case R_PPC_REL24:
   3398 	case R_PPC_REL14:
   3399 	case R_PPC_REL14_BRTAKEN:
   3400 	case R_PPC_REL14_BRNTAKEN:
   3401 	  if (h == NULL)
   3402 	    break;
   3403 	  if (h == htab->elf.hgot)
   3404 	    {
   3405 	      if (htab->plt_type == PLT_UNSET)
   3406 		{
   3407 		  htab->plt_type = PLT_OLD;
   3408 		  htab->old_bfd = abfd;
   3409 		}
   3410 	      break;
   3411 	    }
   3412 	  /* fall through */
   3413 
   3414 	case R_PPC_ADDR24:
   3415 	case R_PPC_ADDR14:
   3416 	case R_PPC_ADDR14_BRTAKEN:
   3417 	case R_PPC_ADDR14_BRNTAKEN:
   3418 	  if (h != NULL && !bfd_link_pic (info))
   3419 	    {
   3420 	      /* We may need a plt entry if the symbol turns out to be
   3421 		 a function defined in a dynamic object.  */
   3422 	      h->needs_plt = 1;
   3423 	      if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
   3424 		return FALSE;
   3425 	      break;
   3426 	    }
   3427 
   3428 	dodyn:
   3429 	  /* If we are creating a shared library, and this is a reloc
   3430 	     against a global symbol, or a non PC relative reloc
   3431 	     against a local symbol, then we need to copy the reloc
   3432 	     into the shared library.  However, if we are linking with
   3433 	     -Bsymbolic, we do not need to copy a reloc against a
   3434 	     global symbol which is defined in an object we are
   3435 	     including in the link (i.e., DEF_REGULAR is set).  At
   3436 	     this point we have not seen all the input files, so it is
   3437 	     possible that DEF_REGULAR is not set now but will be set
   3438 	     later (it is never cleared).  In case of a weak definition,
   3439 	     DEF_REGULAR may be cleared later by a strong definition in
   3440 	     a shared library.  We account for that possibility below by
   3441 	     storing information in the dyn_relocs field of the hash
   3442 	     table entry.  A similar situation occurs when creating
   3443 	     shared libraries and symbol visibility changes render the
   3444 	     symbol local.
   3445 
   3446 	     If on the other hand, we are creating an executable, we
   3447 	     may need to keep relocations for symbols satisfied by a
   3448 	     dynamic library if we manage to avoid copy relocs for the
   3449 	     symbol.  */
   3450 	  if ((bfd_link_pic (info)
   3451 	       && (must_be_dyn_reloc (info, r_type)
   3452 		   || (h != NULL
   3453 		       && (!SYMBOLIC_BIND (info, h)
   3454 			   || h->root.type == bfd_link_hash_defweak
   3455 			   || !h->def_regular))))
   3456 	      || (ELIMINATE_COPY_RELOCS
   3457 		  && !bfd_link_pic (info)
   3458 		  && h != NULL
   3459 		  && (h->root.type == bfd_link_hash_defweak
   3460 		      || !h->def_regular)))
   3461 	    {
   3462 #ifdef DEBUG
   3463 	      fprintf (stderr,
   3464 		       "ppc_elf_check_relocs needs to "
   3465 		       "create relocation for %s\n",
   3466 		       (h && h->root.root.string
   3467 			? h->root.root.string : "<unknown>"));
   3468 #endif
   3469 	      if (sreloc == NULL)
   3470 		{
   3471 		  if (htab->elf.dynobj == NULL)
   3472 		    htab->elf.dynobj = abfd;
   3473 
   3474 		  sreloc = _bfd_elf_make_dynamic_reloc_section
   3475 		    (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
   3476 
   3477 		  if (sreloc == NULL)
   3478 		    return FALSE;
   3479 		}
   3480 
   3481 	      /* If this is a global symbol, we count the number of
   3482 		 relocations we need for this symbol.  */
   3483 	      if (h != NULL)
   3484 		{
   3485 		  struct elf_dyn_relocs *p;
   3486 		  struct elf_dyn_relocs **rel_head;
   3487 
   3488 		  rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
   3489 		  p = *rel_head;
   3490 		  if (p == NULL || p->sec != sec)
   3491 		    {
   3492 		      p = bfd_alloc (htab->elf.dynobj, sizeof *p);
   3493 		      if (p == NULL)
   3494 			return FALSE;
   3495 		      p->next = *rel_head;
   3496 		      *rel_head = p;
   3497 		      p->sec = sec;
   3498 		      p->count = 0;
   3499 		      p->pc_count = 0;
   3500 		    }
   3501 		  p->count += 1;
   3502 		  if (!must_be_dyn_reloc (info, r_type))
   3503 		    p->pc_count += 1;
   3504 		}
   3505 	      else
   3506 		{
   3507 		  /* Track dynamic relocs needed for local syms too.
   3508 		     We really need local syms available to do this
   3509 		     easily.  Oh well.  */
   3510 		  struct ppc_dyn_relocs *p;
   3511 		  struct ppc_dyn_relocs **rel_head;
   3512 		  bfd_boolean is_ifunc;
   3513 		  asection *s;
   3514 		  void *vpp;
   3515 		  Elf_Internal_Sym *isym;
   3516 
   3517 		  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   3518 						abfd, r_symndx);
   3519 		  if (isym == NULL)
   3520 		    return FALSE;
   3521 
   3522 		  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   3523 		  if (s == NULL)
   3524 		    s = sec;
   3525 
   3526 		  vpp = &elf_section_data (s)->local_dynrel;
   3527 		  rel_head = (struct ppc_dyn_relocs **) vpp;
   3528 		  is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
   3529 		  p = *rel_head;
   3530 		  if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
   3531 		    p = p->next;
   3532 		  if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
   3533 		    {
   3534 		      p = bfd_alloc (htab->elf.dynobj, sizeof *p);
   3535 		      if (p == NULL)
   3536 			return FALSE;
   3537 		      p->next = *rel_head;
   3538 		      *rel_head = p;
   3539 		      p->sec = sec;
   3540 		      p->ifunc = is_ifunc;
   3541 		      p->count = 0;
   3542 		    }
   3543 		  p->count += 1;
   3544 		}
   3545 	    }
   3546 
   3547 	  break;
   3548 	}
   3549     }
   3550 
   3551   return TRUE;
   3552 }
   3553 
   3554 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
   3556    and OBFD, and merge non-conflicting ones.  */
   3557 bfd_boolean
   3558 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
   3559 {
   3560   bfd *obfd = info->output_bfd;
   3561   obj_attribute *in_attr, *in_attrs;
   3562   obj_attribute *out_attr, *out_attrs;
   3563   bfd_boolean ret = TRUE;
   3564 
   3565   in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
   3566   out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
   3567 
   3568   in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
   3569   out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
   3570 
   3571   if (in_attr->i != out_attr->i)
   3572     {
   3573       int in_fp = in_attr->i & 3;
   3574       int out_fp = out_attr->i & 3;
   3575       static bfd *last_fp, *last_ld;
   3576 
   3577       if (in_fp == 0)
   3578 	;
   3579       else if (out_fp == 0)
   3580 	{
   3581 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3582 	  out_attr->i ^= in_fp;
   3583 	  last_fp = ibfd;
   3584 	}
   3585       else if (out_fp != 2 && in_fp == 2)
   3586 	{
   3587 	  _bfd_error_handler
   3588 	    /* xgettext:c-format */
   3589 	    (_("%pB uses hard float, %pB uses soft float"),
   3590 	     last_fp, ibfd);
   3591 	  ret = FALSE;
   3592 	}
   3593       else if (out_fp == 2 && in_fp != 2)
   3594 	{
   3595 	  _bfd_error_handler
   3596 	    /* xgettext:c-format */
   3597 	    (_("%pB uses hard float, %pB uses soft float"),
   3598 	     ibfd, last_fp);
   3599 	  ret = FALSE;
   3600 	}
   3601       else if (out_fp == 1 && in_fp == 3)
   3602 	{
   3603 	  _bfd_error_handler
   3604 	    /* xgettext:c-format */
   3605 	    (_("%pB uses double-precision hard float, "
   3606 	       "%pB uses single-precision hard float"), last_fp, ibfd);
   3607 	  ret = FALSE;
   3608 	}
   3609       else if (out_fp == 3 && in_fp == 1)
   3610 	{
   3611 	  _bfd_error_handler
   3612 	    /* xgettext:c-format */
   3613 	    (_("%pB uses double-precision hard float, "
   3614 	       "%pB uses single-precision hard float"), ibfd, last_fp);
   3615 	  ret = FALSE;
   3616 	}
   3617 
   3618       in_fp = in_attr->i & 0xc;
   3619       out_fp = out_attr->i & 0xc;
   3620       if (in_fp == 0)
   3621 	;
   3622       else if (out_fp == 0)
   3623 	{
   3624 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3625 	  out_attr->i ^= in_fp;
   3626 	  last_ld = ibfd;
   3627 	}
   3628       else if (out_fp != 2 * 4 && in_fp == 2 * 4)
   3629 	{
   3630 	  _bfd_error_handler
   3631 	    /* xgettext:c-format */
   3632 	    (_("%pB uses 64-bit long double, "
   3633 	       "%pB uses 128-bit long double"), ibfd, last_ld);
   3634 	  ret = FALSE;
   3635 	}
   3636       else if (in_fp != 2 * 4 && out_fp == 2 * 4)
   3637 	{
   3638 	  _bfd_error_handler
   3639 	    /* xgettext:c-format */
   3640 	    (_("%pB uses 64-bit long double, "
   3641 	       "%pB uses 128-bit long double"), last_ld, ibfd);
   3642 	  ret = FALSE;
   3643 	}
   3644       else if (out_fp == 1 * 4 && in_fp == 3 * 4)
   3645 	{
   3646 	  _bfd_error_handler
   3647 	    /* xgettext:c-format */
   3648 	    (_("%pB uses IBM long double, "
   3649 	       "%pB uses IEEE long double"), last_ld, ibfd);
   3650 	  ret = FALSE;
   3651 	}
   3652       else if (out_fp == 3 * 4 && in_fp == 1 * 4)
   3653 	{
   3654 	  _bfd_error_handler
   3655 	    /* xgettext:c-format */
   3656 	    (_("%pB uses IBM long double, "
   3657 	       "%pB uses IEEE long double"), ibfd, last_ld);
   3658 	  ret = FALSE;
   3659 	}
   3660     }
   3661 
   3662   if (!ret)
   3663     {
   3664       out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3665       bfd_set_error (bfd_error_bad_value);
   3666     }
   3667   return ret;
   3668 }
   3669 
   3670 /* Merge object attributes from IBFD into OBFD.  Warn if
   3671    there are conflicting attributes.  */
   3672 static bfd_boolean
   3673 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
   3674 {
   3675   bfd *obfd;
   3676   obj_attribute *in_attr, *in_attrs;
   3677   obj_attribute *out_attr, *out_attrs;
   3678   bfd_boolean ret;
   3679 
   3680   if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info))
   3681     return FALSE;
   3682 
   3683   obfd = info->output_bfd;
   3684   in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
   3685   out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
   3686 
   3687   /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
   3688      merge non-conflicting ones.  */
   3689   in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
   3690   out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
   3691   ret = TRUE;
   3692   if (in_attr->i != out_attr->i)
   3693     {
   3694       int in_vec = in_attr->i & 3;
   3695       int out_vec = out_attr->i & 3;
   3696       static bfd *last_vec;
   3697 
   3698       if (in_vec == 0)
   3699 	;
   3700       else if (out_vec == 0)
   3701 	{
   3702 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3703 	  out_attr->i = in_vec;
   3704 	  last_vec = ibfd;
   3705 	}
   3706       /* For now, allow generic to transition to AltiVec or SPE
   3707 	 without a warning.  If GCC marked files with their stack
   3708 	 alignment and used don't-care markings for files which are
   3709 	 not affected by the vector ABI, we could warn about this
   3710 	 case too.  */
   3711       else if (in_vec == 1)
   3712 	;
   3713       else if (out_vec == 1)
   3714 	{
   3715 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3716 	  out_attr->i = in_vec;
   3717 	  last_vec = ibfd;
   3718 	}
   3719       else if (out_vec < in_vec)
   3720 	{
   3721 	  _bfd_error_handler
   3722 	    /* xgettext:c-format */
   3723 	    (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
   3724 	     last_vec, ibfd);
   3725 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3726 	  ret = FALSE;
   3727 	}
   3728       else if (out_vec > in_vec)
   3729 	{
   3730 	  _bfd_error_handler
   3731 	    /* xgettext:c-format */
   3732 	    (_("%pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
   3733 	     ibfd, last_vec);
   3734 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3735 	  ret = FALSE;
   3736 	}
   3737     }
   3738 
   3739   /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
   3740      and merge non-conflicting ones.  */
   3741   in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
   3742   out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
   3743   if (in_attr->i != out_attr->i)
   3744     {
   3745       int in_struct = in_attr->i & 3;
   3746       int out_struct = out_attr->i & 3;
   3747       static bfd *last_struct;
   3748 
   3749       if (in_struct == 0 || in_struct == 3)
   3750        ;
   3751       else if (out_struct == 0)
   3752 	{
   3753 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL;
   3754 	  out_attr->i = in_struct;
   3755 	  last_struct = ibfd;
   3756 	}
   3757       else if (out_struct < in_struct)
   3758 	{
   3759 	  _bfd_error_handler
   3760 	    /* xgettext:c-format */
   3761 	    (_("%pB uses r3/r4 for small structure returns, "
   3762 	       "%pB uses memory"), last_struct, ibfd);
   3763 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3764 	  ret = FALSE;
   3765 	}
   3766       else if (out_struct > in_struct)
   3767 	{
   3768 	  _bfd_error_handler
   3769 	    /* xgettext:c-format */
   3770 	    (_("%pB uses r3/r4 for small structure returns, "
   3771 	       "%pB uses memory"), ibfd, last_struct);
   3772 	  out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR;
   3773 	  ret = FALSE;
   3774 	}
   3775     }
   3776   if (!ret)
   3777     {
   3778       bfd_set_error (bfd_error_bad_value);
   3779       return FALSE;
   3780     }
   3781 
   3782   /* Merge Tag_compatibility attributes and any common GNU ones.  */
   3783   return _bfd_elf_merge_object_attributes (ibfd, info);
   3784 }
   3785 
   3786 /* Merge backend specific data from an object file to the output
   3787    object file when linking.  */
   3788 
   3789 static bfd_boolean
   3790 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
   3791 {
   3792   bfd *obfd = info->output_bfd;
   3793   flagword old_flags;
   3794   flagword new_flags;
   3795   bfd_boolean error;
   3796 
   3797   if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
   3798     return TRUE;
   3799 
   3800   /* Check if we have the same endianness.  */
   3801   if (! _bfd_generic_verify_endian_match (ibfd, info))
   3802     return FALSE;
   3803 
   3804   if (!ppc_elf_merge_obj_attributes (ibfd, info))
   3805     return FALSE;
   3806 
   3807   new_flags = elf_elfheader (ibfd)->e_flags;
   3808   old_flags = elf_elfheader (obfd)->e_flags;
   3809   if (!elf_flags_init (obfd))
   3810     {
   3811       /* First call, no flags set.  */
   3812       elf_flags_init (obfd) = TRUE;
   3813       elf_elfheader (obfd)->e_flags = new_flags;
   3814     }
   3815 
   3816   /* Compatible flags are ok.  */
   3817   else if (new_flags == old_flags)
   3818     ;
   3819 
   3820   /* Incompatible flags.  */
   3821   else
   3822     {
   3823       /* Warn about -mrelocatable mismatch.  Allow -mrelocatable-lib
   3824 	 to be linked with either.  */
   3825       error = FALSE;
   3826       if ((new_flags & EF_PPC_RELOCATABLE) != 0
   3827 	  && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
   3828 	{
   3829 	  error = TRUE;
   3830 	  _bfd_error_handler
   3831 	    (_("%pB: compiled with -mrelocatable and linked with "
   3832 	       "modules compiled normally"), ibfd);
   3833 	}
   3834       else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
   3835 	       && (old_flags & EF_PPC_RELOCATABLE) != 0)
   3836 	{
   3837 	  error = TRUE;
   3838 	  _bfd_error_handler
   3839 	    (_("%pB: compiled normally and linked with "
   3840 	       "modules compiled with -mrelocatable"), ibfd);
   3841 	}
   3842 
   3843       /* The output is -mrelocatable-lib iff both the input files are.  */
   3844       if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
   3845 	elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
   3846 
   3847       /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
   3848 	 but each input file is either -mrelocatable or -mrelocatable-lib.  */
   3849       if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
   3850 	  && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
   3851 	  && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
   3852 	elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
   3853 
   3854       /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
   3855 	 any module uses it.  */
   3856       elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
   3857 
   3858       new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
   3859       old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
   3860 
   3861       /* Warn about any other mismatches.  */
   3862       if (new_flags != old_flags)
   3863 	{
   3864 	  error = TRUE;
   3865 	  _bfd_error_handler
   3866 	    /* xgettext:c-format */
   3867 	    (_("%pB: uses different e_flags (%#x) fields "
   3868 	       "than previous modules (%#x)"),
   3869 	     ibfd, new_flags, old_flags);
   3870 	}
   3871 
   3872       if (error)
   3873 	{
   3874 	  bfd_set_error (bfd_error_bad_value);
   3875 	  return FALSE;
   3876 	}
   3877     }
   3878 
   3879   return TRUE;
   3880 }
   3881 
   3882 static void
   3883 ppc_elf_vle_split16 (bfd *input_bfd,
   3884 		     asection *input_section,
   3885 		     unsigned long offset,
   3886 		     bfd_byte *loc,
   3887 		     bfd_vma value,
   3888 		     split16_format_type split16_format,
   3889 		     bfd_boolean fixup)
   3890 {
   3891   unsigned int insn, opcode;
   3892 
   3893   insn = bfd_get_32 (input_bfd, loc);
   3894   opcode = insn & E_OPCODE_MASK;
   3895   if (opcode == E_OR2I_INSN
   3896       || opcode == E_AND2I_DOT_INSN
   3897       || opcode == E_OR2IS_INSN
   3898       || opcode == E_LIS_INSN
   3899       || opcode == E_AND2IS_DOT_INSN)
   3900     {
   3901       if (split16_format != split16a_type)
   3902 	{
   3903 	  if (fixup)
   3904 	    split16_format = split16a_type;
   3905 	  else
   3906 	    _bfd_error_handler
   3907 	      /* xgettext:c-format */
   3908 	      (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
   3909 	       input_bfd, input_section, offset, opcode);
   3910 	}
   3911     }
   3912   else if (opcode == E_ADD2I_DOT_INSN
   3913 	   || opcode == E_ADD2IS_INSN
   3914 	   || opcode == E_CMP16I_INSN
   3915 	   || opcode == E_MULL2I_INSN
   3916 	   || opcode == E_CMPL16I_INSN
   3917 	   || opcode == E_CMPH16I_INSN
   3918 	   || opcode == E_CMPHL16I_INSN)
   3919     {
   3920       if (split16_format != split16d_type)
   3921 	{
   3922 	  if (fixup)
   3923 	    split16_format = split16d_type;
   3924 	  else
   3925 	    _bfd_error_handler
   3926 	      /* xgettext:c-format */
   3927 	      (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
   3928 	       input_bfd, input_section, offset, opcode);
   3929 	}
   3930     }
   3931   if (split16_format == split16a_type)
   3932     {
   3933       insn &= ~((0xf800 << 5) | 0x7ff);
   3934       insn |= (value & 0xf800) << 5;
   3935       if ((insn & E_LI_MASK) == E_LI_INSN)
   3936 	{
   3937 	  /* Hack for e_li.  Extend sign.  */
   3938 	  insn &= ~(0xf0000 >> 5);
   3939 	  insn |= (-(value & 0x8000) & 0xf0000) >> 5;
   3940 	}
   3941     }
   3942   else
   3943     {
   3944       insn &= ~((0xf800 << 10) | 0x7ff);
   3945       insn |= (value & 0xf800) << 10;
   3946     }
   3947   insn |= value & 0x7ff;
   3948   bfd_put_32 (input_bfd, insn, loc);
   3949 }
   3950 
   3951 static void
   3952 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
   3953 {
   3954   unsigned int insn;
   3955 
   3956   insn = bfd_get_32 (output_bfd, loc);
   3957   /* We have an li20 field, bits 17..20, 11..15, 21..31.  */
   3958   /* Top 4 bits of value to 17..20.  */
   3959   insn |= (value & 0xf0000) >> 5;
   3960   /* Next 5 bits of the value to 11..15.  */
   3961   insn |= (value & 0xf800) << 5;
   3962   /* And the final 11 bits of the value to bits 21 to 31.  */
   3963   insn |= value & 0x7ff;
   3964   bfd_put_32 (output_bfd, insn, loc);
   3965 }
   3966 
   3967 
   3968 /* Choose which PLT scheme to use, and set .plt flags appropriately.
   3970    Returns -1 on error, 0 for old PLT, 1 for new PLT.  */
   3971 int
   3972 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
   3973 			   struct bfd_link_info *info)
   3974 {
   3975   struct ppc_elf_link_hash_table *htab;
   3976   flagword flags;
   3977 
   3978   htab = ppc_elf_hash_table (info);
   3979 
   3980   if (htab->plt_type == PLT_UNSET)
   3981     {
   3982       struct elf_link_hash_entry *h;
   3983 
   3984       if (htab->params->plt_style == PLT_OLD)
   3985 	htab->plt_type = PLT_OLD;
   3986       else if (bfd_link_pic (info)
   3987 	       && htab->elf.dynamic_sections_created
   3988 	       && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
   3989 					     FALSE, FALSE, TRUE)) != NULL
   3990 	       && (h->type == STT_FUNC
   3991 		   || h->needs_plt)
   3992 	       && h->ref_regular
   3993 	       && !(SYMBOL_CALLS_LOCAL (info, h)
   3994 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
   3995 	{
   3996 	  /* Profiling of shared libs (and pies) is not supported with
   3997 	     secure plt, because ppc32 does profiling before a
   3998 	     function prologue and a secure plt pic call stubs needs
   3999 	     r30 to be set up.  */
   4000 	  htab->plt_type = PLT_OLD;
   4001 	}
   4002       else
   4003 	{
   4004 	  bfd *ibfd;
   4005 	  enum ppc_elf_plt_type plt_type = htab->params->plt_style;
   4006 
   4007 	  /* Look through the reloc flags left by ppc_elf_check_relocs.
   4008 	     Use the old style bss plt if a file makes plt calls
   4009 	     without using the new relocs, and if ld isn't given
   4010 	     --secure-plt and we never see REL16 relocs.  */
   4011 	  if (plt_type == PLT_UNSET)
   4012 	    plt_type = PLT_OLD;
   4013 	  for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
   4014 	    if (is_ppc_elf (ibfd))
   4015 	      {
   4016 		if (ppc_elf_tdata (ibfd)->has_rel16)
   4017 		  plt_type = PLT_NEW;
   4018 		else if (ppc_elf_tdata (ibfd)->makes_plt_call)
   4019 		  {
   4020 		    plt_type = PLT_OLD;
   4021 		    htab->old_bfd = ibfd;
   4022 		    break;
   4023 		  }
   4024 	      }
   4025 	  htab->plt_type = plt_type;
   4026 	}
   4027     }
   4028   if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
   4029     {
   4030       if (htab->old_bfd != NULL)
   4031 	_bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
   4032       else
   4033 	_bfd_error_handler (_("bss-plt forced by profiling"));
   4034     }
   4035 
   4036   BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
   4037 
   4038   if (htab->plt_type == PLT_NEW)
   4039     {
   4040       flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
   4041 	       | SEC_IN_MEMORY | SEC_LINKER_CREATED);
   4042 
   4043       /* The new PLT is a loaded section.  */
   4044       if (htab->elf.splt != NULL
   4045 	  && !bfd_set_section_flags (htab->elf.splt, flags))
   4046 	return -1;
   4047 
   4048       /* The new GOT is not executable.  */
   4049       if (htab->elf.sgot != NULL
   4050 	  && !bfd_set_section_flags (htab->elf.sgot, flags))
   4051 	return -1;
   4052     }
   4053   else
   4054     {
   4055       /* Stop an unused .glink section from affecting .text alignment.  */
   4056       if (htab->glink != NULL
   4057 	  && !bfd_set_section_alignment (htab->glink, 0))
   4058 	return -1;
   4059     }
   4060   return htab->plt_type == PLT_NEW;
   4061 }
   4062 
   4063 /* Return the section that should be marked against GC for a given
   4065    relocation.  */
   4066 
   4067 static asection *
   4068 ppc_elf_gc_mark_hook (asection *sec,
   4069 		      struct bfd_link_info *info,
   4070 		      Elf_Internal_Rela *rel,
   4071 		      struct elf_link_hash_entry *h,
   4072 		      Elf_Internal_Sym *sym)
   4073 {
   4074   if (h != NULL)
   4075     switch (ELF32_R_TYPE (rel->r_info))
   4076       {
   4077       case R_PPC_GNU_VTINHERIT:
   4078       case R_PPC_GNU_VTENTRY:
   4079 	return NULL;
   4080       }
   4081 
   4082   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
   4083 }
   4084 
   4085 static bfd_boolean
   4086 get_sym_h (struct elf_link_hash_entry **hp,
   4087 	   Elf_Internal_Sym **symp,
   4088 	   asection **symsecp,
   4089 	   unsigned char **tls_maskp,
   4090 	   Elf_Internal_Sym **locsymsp,
   4091 	   unsigned long r_symndx,
   4092 	   bfd *ibfd)
   4093 {
   4094   Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4095 
   4096   if (r_symndx >= symtab_hdr->sh_info)
   4097     {
   4098       struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
   4099       struct elf_link_hash_entry *h;
   4100 
   4101       h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4102       while (h->root.type == bfd_link_hash_indirect
   4103 	     || h->root.type == bfd_link_hash_warning)
   4104 	h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4105 
   4106       if (hp != NULL)
   4107 	*hp = h;
   4108 
   4109       if (symp != NULL)
   4110 	*symp = NULL;
   4111 
   4112       if (symsecp != NULL)
   4113 	{
   4114 	  asection *symsec = NULL;
   4115 	  if (h->root.type == bfd_link_hash_defined
   4116 	      || h->root.type == bfd_link_hash_defweak)
   4117 	    symsec = h->root.u.def.section;
   4118 	  *symsecp = symsec;
   4119 	}
   4120 
   4121       if (tls_maskp != NULL)
   4122 	*tls_maskp = &ppc_elf_hash_entry (h)->tls_mask;
   4123     }
   4124   else
   4125     {
   4126       Elf_Internal_Sym *sym;
   4127       Elf_Internal_Sym *locsyms = *locsymsp;
   4128 
   4129       if (locsyms == NULL)
   4130 	{
   4131 	  locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
   4132 	  if (locsyms == NULL)
   4133 	    locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
   4134 					    symtab_hdr->sh_info,
   4135 					    0, NULL, NULL, NULL);
   4136 	  if (locsyms == NULL)
   4137 	    return FALSE;
   4138 	  *locsymsp = locsyms;
   4139 	}
   4140       sym = locsyms + r_symndx;
   4141 
   4142       if (hp != NULL)
   4143 	*hp = NULL;
   4144 
   4145       if (symp != NULL)
   4146 	*symp = sym;
   4147 
   4148       if (symsecp != NULL)
   4149 	*symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
   4150 
   4151       if (tls_maskp != NULL)
   4152 	{
   4153 	  bfd_signed_vma *local_got;
   4154 	  unsigned char *tls_mask;
   4155 
   4156 	  tls_mask = NULL;
   4157 	  local_got = elf_local_got_refcounts (ibfd);
   4158 	  if (local_got != NULL)
   4159 	    {
   4160 	      struct plt_entry **local_plt = (struct plt_entry **)
   4161 		(local_got + symtab_hdr->sh_info);
   4162 	      unsigned char *lgot_masks = (unsigned char *)
   4163 		(local_plt + symtab_hdr->sh_info);
   4164 	      tls_mask = &lgot_masks[r_symndx];
   4165 	    }
   4166 	  *tls_maskp = tls_mask;
   4167 	}
   4168     }
   4169   return TRUE;
   4170 }
   4171 
   4172 /* Analyze inline PLT call relocations to see whether calls to locally
   4174    defined functions can be converted to direct calls.  */
   4175 
   4176 bfd_boolean
   4177 ppc_elf_inline_plt (struct bfd_link_info *info)
   4178 {
   4179   struct ppc_elf_link_hash_table *htab;
   4180   bfd *ibfd;
   4181   asection *sec;
   4182   bfd_vma low_vma, high_vma, limit;
   4183 
   4184   htab = ppc_elf_hash_table (info);
   4185   if (htab == NULL)
   4186     return FALSE;
   4187 
   4188   /* A bl insn can reach -0x2000000 to 0x1fffffc.  The limit is
   4189      reduced somewhat to cater for possible stubs that might be added
   4190      between the call and its destination.  */
   4191   limit = 0x1e00000;
   4192   low_vma = -1;
   4193   high_vma = 0;
   4194   for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next)
   4195     if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE))
   4196       {
   4197 	if (low_vma > sec->vma)
   4198 	  low_vma = sec->vma;
   4199 	if (high_vma < sec->vma + sec->size)
   4200 	  high_vma = sec->vma + sec->size;
   4201       }
   4202 
   4203   /* If a "bl" can reach anywhere in local code sections, then we can
   4204      convert all inline PLT sequences to direct calls when the symbol
   4205      is local.  */
   4206   if (high_vma - low_vma < limit)
   4207     {
   4208       htab->can_convert_all_inline_plt = 1;
   4209       return TRUE;
   4210     }
   4211 
   4212   /* Otherwise, go looking through relocs for cases where a direct
   4213      call won't reach.  Mark the symbol on any such reloc to disable
   4214      the optimization and keep the PLT entry as it seems likely that
   4215      this will be better than creating trampolines.  Note that this
   4216      will disable the optimization for all inline PLT calls to a
   4217      particular symbol, not just those that won't reach.  The
   4218      difficulty in doing a more precise optimization is that the
   4219      linker needs to make a decision depending on whether a
   4220      particular R_PPC_PLTCALL insn can be turned into a direct
   4221      call, for each of the R_PPC_PLTSEQ and R_PPC_PLT16* insns in
   4222      the sequence, and there is nothing that ties those relocs
   4223      together except their symbol.  */
   4224 
   4225   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   4226     {
   4227       Elf_Internal_Shdr *symtab_hdr;
   4228       Elf_Internal_Sym *local_syms;
   4229 
   4230       if (!is_ppc_elf (ibfd))
   4231 	continue;
   4232 
   4233       local_syms = NULL;
   4234       symtab_hdr = &elf_symtab_hdr (ibfd);
   4235 
   4236       for (sec = ibfd->sections; sec != NULL; sec = sec->next)
   4237 	if (sec->has_pltcall
   4238 	    && !bfd_is_abs_section (sec->output_section))
   4239 	  {
   4240 	    Elf_Internal_Rela *relstart, *rel, *relend;
   4241 
   4242 	    /* Read the relocations.  */
   4243 	    relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
   4244 						  info->keep_memory);
   4245 	    if (relstart == NULL)
   4246 	      return FALSE;
   4247 
   4248 	    relend = relstart + sec->reloc_count;
   4249 	    for (rel = relstart; rel < relend; rel++)
   4250 	      {
   4251 		enum elf_ppc_reloc_type r_type;
   4252 		unsigned long r_symndx;
   4253 		asection *sym_sec;
   4254 		struct elf_link_hash_entry *h;
   4255 		Elf_Internal_Sym *sym;
   4256 		unsigned char *tls_maskp;
   4257 
   4258 		r_type = ELF32_R_TYPE (rel->r_info);
   4259 		if (r_type != R_PPC_PLTCALL)
   4260 		  continue;
   4261 
   4262 		r_symndx = ELF32_R_SYM (rel->r_info);
   4263 		if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms,
   4264 				r_symndx, ibfd))
   4265 		  {
   4266 		    if (elf_section_data (sec)->relocs != relstart)
   4267 		      free (relstart);
   4268 		    if (local_syms != NULL
   4269 			&& symtab_hdr->contents != (unsigned char *) local_syms)
   4270 		      free (local_syms);
   4271 		    return FALSE;
   4272 		  }
   4273 
   4274 		if (sym_sec != NULL && sym_sec->output_section != NULL)
   4275 		  {
   4276 		    bfd_vma from, to;
   4277 		    if (h != NULL)
   4278 		      to = h->root.u.def.value;
   4279 		    else
   4280 		      to = sym->st_value;
   4281 		    to += (rel->r_addend
   4282 			   + sym_sec->output_offset
   4283 			   + sym_sec->output_section->vma);
   4284 		    from = (rel->r_offset
   4285 			    + sec->output_offset
   4286 			    + sec->output_section->vma);
   4287 		    if (to - from + limit < 2 * limit)
   4288 		      *tls_maskp &= ~PLT_KEEP;
   4289 		  }
   4290 	      }
   4291 	    if (elf_section_data (sec)->relocs != relstart)
   4292 	      free (relstart);
   4293 	  }
   4294 
   4295       if (local_syms != NULL
   4296 	  && symtab_hdr->contents != (unsigned char *) local_syms)
   4297 	{
   4298 	  if (!info->keep_memory)
   4299 	    free (local_syms);
   4300 	  else
   4301 	    symtab_hdr->contents = (unsigned char *) local_syms;
   4302 	}
   4303     }
   4304 
   4305   return TRUE;
   4306 }
   4307 
   4308 /* Set plt output section type, htab->tls_get_addr, and call the
   4309    generic ELF tls_setup function.  */
   4310 
   4311 asection *
   4312 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
   4313 {
   4314   struct ppc_elf_link_hash_table *htab;
   4315 
   4316   htab = ppc_elf_hash_table (info);
   4317   htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
   4318 					     FALSE, FALSE, TRUE);
   4319   if (htab->plt_type != PLT_NEW)
   4320     htab->params->no_tls_get_addr_opt = TRUE;
   4321 
   4322   if (!htab->params->no_tls_get_addr_opt)
   4323     {
   4324       struct elf_link_hash_entry *opt, *tga;
   4325       opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
   4326 				  FALSE, FALSE, TRUE);
   4327       if (opt != NULL
   4328 	  && (opt->root.type == bfd_link_hash_defined
   4329 	      || opt->root.type == bfd_link_hash_defweak))
   4330 	{
   4331 	  /* If glibc supports an optimized __tls_get_addr call stub,
   4332 	     signalled by the presence of __tls_get_addr_opt, and we'll
   4333 	     be calling __tls_get_addr via a plt call stub, then
   4334 	     make __tls_get_addr point to __tls_get_addr_opt.  */
   4335 	  tga = htab->tls_get_addr;
   4336 	  if (htab->elf.dynamic_sections_created
   4337 	      && tga != NULL
   4338 	      && (tga->type == STT_FUNC
   4339 		  || tga->needs_plt)
   4340 	      && !(SYMBOL_CALLS_LOCAL (info, tga)
   4341 		   || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
   4342 	    {
   4343 	      struct plt_entry *ent;
   4344 	      for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
   4345 		if (ent->plt.refcount > 0)
   4346 		  break;
   4347 	      if (ent != NULL)
   4348 		{
   4349 		  tga->root.type = bfd_link_hash_indirect;
   4350 		  tga->root.u.i.link = &opt->root;
   4351 		  ppc_elf_copy_indirect_symbol (info, opt, tga);
   4352 		  opt->mark = 1;
   4353 		  if (opt->dynindx != -1)
   4354 		    {
   4355 		      /* Use __tls_get_addr_opt in dynamic relocations.  */
   4356 		      opt->dynindx = -1;
   4357 		      _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
   4358 					      opt->dynstr_index);
   4359 		      if (!bfd_elf_link_record_dynamic_symbol (info, opt))
   4360 			return FALSE;
   4361 		    }
   4362 		  htab->tls_get_addr = opt;
   4363 		}
   4364 	    }
   4365 	}
   4366       else
   4367 	htab->params->no_tls_get_addr_opt = TRUE;
   4368     }
   4369   if (htab->plt_type == PLT_NEW
   4370       && htab->elf.splt != NULL
   4371       && htab->elf.splt->output_section != NULL)
   4372     {
   4373       elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
   4374       elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
   4375     }
   4376 
   4377   return _bfd_elf_tls_setup (obfd, info);
   4378 }
   4379 
   4380 /* Return TRUE iff REL is a branch reloc with a global symbol matching
   4381    HASH.  */
   4382 
   4383 static bfd_boolean
   4384 branch_reloc_hash_match (const bfd *ibfd,
   4385 			 const Elf_Internal_Rela *rel,
   4386 			 const struct elf_link_hash_entry *hash)
   4387 {
   4388   Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4389   enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
   4390   unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
   4391 
   4392   if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
   4393     {
   4394       struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
   4395       struct elf_link_hash_entry *h;
   4396 
   4397       h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4398       while (h->root.type == bfd_link_hash_indirect
   4399 	     || h->root.type == bfd_link_hash_warning)
   4400 	h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4401       if (h == hash)
   4402 	return TRUE;
   4403     }
   4404   return FALSE;
   4405 }
   4406 
   4407 /* Run through all the TLS relocs looking for optimization
   4408    opportunities.  */
   4409 
   4410 bfd_boolean
   4411 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
   4412 		      struct bfd_link_info *info)
   4413 {
   4414   bfd *ibfd;
   4415   asection *sec;
   4416   struct ppc_elf_link_hash_table *htab;
   4417   int pass;
   4418 
   4419   if (!bfd_link_executable (info))
   4420     return TRUE;
   4421 
   4422   htab = ppc_elf_hash_table (info);
   4423   if (htab == NULL)
   4424     return FALSE;
   4425 
   4426   /* Make two passes through the relocs.  First time check that tls
   4427      relocs involved in setting up a tls_get_addr call are indeed
   4428      followed by such a call.  If they are not, don't do any tls
   4429      optimization.  On the second pass twiddle tls_mask flags to
   4430      notify relocate_section that optimization can be done, and
   4431      adjust got and plt refcounts.  */
   4432   for (pass = 0; pass < 2; ++pass)
   4433     for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   4434       {
   4435 	Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
   4436 	asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
   4437 
   4438 	for (sec = ibfd->sections; sec != NULL; sec = sec->next)
   4439 	  if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
   4440 	    {
   4441 	      Elf_Internal_Rela *relstart, *rel, *relend;
   4442 	      int expecting_tls_get_addr = 0;
   4443 
   4444 	      /* Read the relocations.  */
   4445 	      relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
   4446 						    info->keep_memory);
   4447 	      if (relstart == NULL)
   4448 		return FALSE;
   4449 
   4450 	      relend = relstart + sec->reloc_count;
   4451 	      for (rel = relstart; rel < relend; rel++)
   4452 		{
   4453 		  enum elf_ppc_reloc_type r_type;
   4454 		  unsigned long r_symndx;
   4455 		  struct elf_link_hash_entry *h = NULL;
   4456 		  unsigned char *tls_mask;
   4457 		  unsigned char tls_set, tls_clear;
   4458 		  bfd_boolean is_local;
   4459 		  bfd_signed_vma *got_count;
   4460 
   4461 		  r_symndx = ELF32_R_SYM (rel->r_info);
   4462 		  if (r_symndx >= symtab_hdr->sh_info)
   4463 		    {
   4464 		      struct elf_link_hash_entry **sym_hashes;
   4465 
   4466 		      sym_hashes = elf_sym_hashes (ibfd);
   4467 		      h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4468 		      while (h->root.type == bfd_link_hash_indirect
   4469 			     || h->root.type == bfd_link_hash_warning)
   4470 			h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4471 		    }
   4472 
   4473 		  is_local = SYMBOL_REFERENCES_LOCAL (info, h);
   4474 		  r_type = ELF32_R_TYPE (rel->r_info);
   4475 		  /* If this section has old-style __tls_get_addr calls
   4476 		     without marker relocs, then check that each
   4477 		     __tls_get_addr call reloc is preceded by a reloc
   4478 		     that conceivably belongs to the __tls_get_addr arg
   4479 		     setup insn.  If we don't find matching arg setup
   4480 		     relocs, don't do any tls optimization.  */
   4481 		  if (pass == 0
   4482 		      && sec->nomark_tls_get_addr
   4483 		      && h != NULL
   4484 		      && h == htab->tls_get_addr
   4485 		      && !expecting_tls_get_addr
   4486 		      && is_branch_reloc (r_type))
   4487 		    {
   4488 		      info->callbacks->minfo ("%H __tls_get_addr lost arg, "
   4489 					      "TLS optimization disabled\n",
   4490 					      ibfd, sec, rel->r_offset);
   4491 		      if (elf_section_data (sec)->relocs != relstart)
   4492 			free (relstart);
   4493 		      return TRUE;
   4494 		    }
   4495 
   4496 		  expecting_tls_get_addr = 0;
   4497 		  switch (r_type)
   4498 		    {
   4499 		    case R_PPC_GOT_TLSLD16:
   4500 		    case R_PPC_GOT_TLSLD16_LO:
   4501 		      expecting_tls_get_addr = 1;
   4502 		      /* Fall through.  */
   4503 
   4504 		    case R_PPC_GOT_TLSLD16_HI:
   4505 		    case R_PPC_GOT_TLSLD16_HA:
   4506 		      /* These relocs should never be against a symbol
   4507 			 defined in a shared lib.  Leave them alone if
   4508 			 that turns out to be the case.  */
   4509 		      if (!is_local)
   4510 			continue;
   4511 
   4512 		      /* LD -> LE */
   4513 		      tls_set = 0;
   4514 		      tls_clear = TLS_LD;
   4515 		      break;
   4516 
   4517 		    case R_PPC_GOT_TLSGD16:
   4518 		    case R_PPC_GOT_TLSGD16_LO:
   4519 		      expecting_tls_get_addr = 1;
   4520 		      /* Fall through.  */
   4521 
   4522 		    case R_PPC_GOT_TLSGD16_HI:
   4523 		    case R_PPC_GOT_TLSGD16_HA:
   4524 		      if (is_local)
   4525 			/* GD -> LE */
   4526 			tls_set = 0;
   4527 		      else
   4528 			/* GD -> IE */
   4529 			tls_set = TLS_TLS | TLS_GDIE;
   4530 		      tls_clear = TLS_GD;
   4531 		      break;
   4532 
   4533 		    case R_PPC_GOT_TPREL16:
   4534 		    case R_PPC_GOT_TPREL16_LO:
   4535 		    case R_PPC_GOT_TPREL16_HI:
   4536 		    case R_PPC_GOT_TPREL16_HA:
   4537 		      if (is_local)
   4538 			{
   4539 			  /* IE -> LE */
   4540 			  tls_set = 0;
   4541 			  tls_clear = TLS_TPREL;
   4542 			  break;
   4543 			}
   4544 		      else
   4545 			continue;
   4546 
   4547 		    case R_PPC_TLSLD:
   4548 		      if (!is_local)
   4549 			continue;
   4550 		      /* Fall through.  */
   4551 		    case R_PPC_TLSGD:
   4552 		      if (rel + 1 < relend
   4553 			  && is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   4554 			{
   4555 			  if (pass != 0
   4556 			      && ELF32_R_TYPE (rel[1].r_info) != R_PPC_PLTSEQ)
   4557 			    {
   4558 			      r_type = ELF32_R_TYPE (rel[1].r_info);
   4559 			      r_symndx = ELF32_R_SYM (rel[1].r_info);
   4560 			      if (r_symndx >= symtab_hdr->sh_info)
   4561 				{
   4562 				  struct elf_link_hash_entry **sym_hashes;
   4563 
   4564 				  sym_hashes = elf_sym_hashes (ibfd);
   4565 				  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   4566 				  while (h->root.type == bfd_link_hash_indirect
   4567 					 || h->root.type == bfd_link_hash_warning)
   4568 				    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   4569 				  if (h != NULL)
   4570 				    {
   4571 				      struct plt_entry *ent = NULL;
   4572 				      bfd_vma addend = 0;
   4573 
   4574 				      if (bfd_link_pic (info))
   4575 					addend = rel->r_addend;
   4576 				      ent = find_plt_ent (&h->plt.plist,
   4577 							  got2, addend);
   4578 				      if (ent != NULL
   4579 					  && ent->plt.refcount > 0)
   4580 					ent->plt.refcount -= 1;
   4581 				    }
   4582 				}
   4583 			    }
   4584 			  continue;
   4585 			}
   4586 		      expecting_tls_get_addr = 2;
   4587 		      tls_set = 0;
   4588 		      tls_clear = 0;
   4589 		      break;
   4590 
   4591 		    default:
   4592 		      continue;
   4593 		    }
   4594 
   4595 		  if (pass == 0)
   4596 		    {
   4597 		      if (!expecting_tls_get_addr
   4598 			  || !sec->nomark_tls_get_addr)
   4599 			continue;
   4600 
   4601 		      if (rel + 1 < relend
   4602 			  && branch_reloc_hash_match (ibfd, rel + 1,
   4603 						      htab->tls_get_addr))
   4604 			continue;
   4605 
   4606 		      /* Uh oh, we didn't find the expected call.  We
   4607 			 could just mark this symbol to exclude it
   4608 			 from tls optimization but it's safer to skip
   4609 			 the entire optimization.  */
   4610 		      info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
   4611 						"TLS optimization disabled\n"),
   4612 					      ibfd, sec, rel->r_offset);
   4613 		      if (elf_section_data (sec)->relocs != relstart)
   4614 			free (relstart);
   4615 		      return TRUE;
   4616 		    }
   4617 
   4618 		  if (h != NULL)
   4619 		    {
   4620 		      tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
   4621 		      got_count = &h->got.refcount;
   4622 		    }
   4623 		  else
   4624 		    {
   4625 		      bfd_signed_vma *lgot_refs;
   4626 		      struct plt_entry **local_plt;
   4627 		      unsigned char *lgot_masks;
   4628 
   4629 		      lgot_refs = elf_local_got_refcounts (ibfd);
   4630 		      if (lgot_refs == NULL)
   4631 			abort ();
   4632 		      local_plt = (struct plt_entry **)
   4633 			(lgot_refs + symtab_hdr->sh_info);
   4634 		      lgot_masks = (unsigned char *)
   4635 			(local_plt + symtab_hdr->sh_info);
   4636 		      tls_mask = &lgot_masks[r_symndx];
   4637 		      got_count = &lgot_refs[r_symndx];
   4638 		    }
   4639 
   4640 		  /* If we don't have old-style __tls_get_addr calls
   4641 		     without TLSGD/TLSLD marker relocs, and we haven't
   4642 		     found a new-style __tls_get_addr call with a
   4643 		     marker for this symbol, then we either have a
   4644 		     broken object file or an -mlongcall style
   4645 		     indirect call to __tls_get_addr without a marker.
   4646 		     Disable optimization in this case.  */
   4647 		  if ((tls_clear & (TLS_GD | TLS_LD)) != 0
   4648 		      && !sec->nomark_tls_get_addr
   4649 		      && ((*tls_mask & (TLS_TLS | TLS_MARK))
   4650 			  != (TLS_TLS | TLS_MARK)))
   4651 		    continue;
   4652 
   4653 		  if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr)
   4654 		    {
   4655 		      struct plt_entry *ent;
   4656 		      bfd_vma addend = 0;
   4657 
   4658 		      if (bfd_link_pic (info)
   4659 			  && (ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24
   4660 			      || ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTCALL))
   4661 			addend = rel[1].r_addend;
   4662 		      ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
   4663 					  got2, addend);
   4664 		      if (ent != NULL && ent->plt.refcount > 0)
   4665 			ent->plt.refcount -= 1;
   4666 		    }
   4667 		  if (tls_clear == 0)
   4668 		    continue;
   4669 
   4670 		  if (tls_set == 0)
   4671 		    {
   4672 		      /* We managed to get rid of a got entry.  */
   4673 		      if (*got_count > 0)
   4674 			*got_count -= 1;
   4675 		    }
   4676 
   4677 		  *tls_mask |= tls_set;
   4678 		  *tls_mask &= ~tls_clear;
   4679 		}
   4680 
   4681 	      if (elf_section_data (sec)->relocs != relstart)
   4682 		free (relstart);
   4683 	    }
   4684       }
   4685   htab->do_tls_opt = 1;
   4686   return TRUE;
   4687 }
   4688 
   4689 /* Find dynamic relocs for H that apply to read-only sections.  */
   4691 
   4692 static asection *
   4693 readonly_dynrelocs (struct elf_link_hash_entry *h)
   4694 {
   4695   struct elf_dyn_relocs *p;
   4696 
   4697   for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
   4698     {
   4699       asection *s = p->sec->output_section;
   4700 
   4701       if (s != NULL && (s->flags & SEC_READONLY) != 0)
   4702 	return p->sec;
   4703     }
   4704   return NULL;
   4705 }
   4706 
   4707 /* Return true if we have dynamic relocs against H or any of its weak
   4708    aliases, that apply to read-only sections.  Cannot be used after
   4709    size_dynamic_sections.  */
   4710 
   4711 static bfd_boolean
   4712 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
   4713 {
   4714   struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
   4715   do
   4716     {
   4717       if (readonly_dynrelocs (&eh->elf))
   4718 	return TRUE;
   4719       eh = ppc_elf_hash_entry (eh->elf.u.alias);
   4720     } while (eh != NULL && &eh->elf != h);
   4721 
   4722   return FALSE;
   4723 }
   4724 
   4725 /* Return whether H has pc-relative dynamic relocs.  */
   4726 
   4727 static bfd_boolean
   4728 pc_dynrelocs (struct elf_link_hash_entry *h)
   4729 {
   4730   struct elf_dyn_relocs *p;
   4731 
   4732   for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
   4733     if (p->pc_count != 0)
   4734       return TRUE;
   4735   return FALSE;
   4736 }
   4737 
   4738 /* Adjust a symbol defined by a dynamic object and referenced by a
   4739    regular object.  The current definition is in some section of the
   4740    dynamic object, but we're not including those sections.  We have to
   4741    change the definition to something the rest of the link can
   4742    understand.  */
   4743 
   4744 static bfd_boolean
   4745 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
   4746 			       struct elf_link_hash_entry *h)
   4747 {
   4748   struct ppc_elf_link_hash_table *htab;
   4749   asection *s;
   4750 
   4751 #ifdef DEBUG
   4752   fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
   4753 	   h->root.root.string);
   4754 #endif
   4755 
   4756   /* Make sure we know what is going on here.  */
   4757   htab = ppc_elf_hash_table (info);
   4758   BFD_ASSERT (htab->elf.dynobj != NULL
   4759 	      && (h->needs_plt
   4760 		  || h->type == STT_GNU_IFUNC
   4761 		  || h->is_weakalias
   4762 		  || (h->def_dynamic
   4763 		      && h->ref_regular
   4764 		      && !h->def_regular)));
   4765 
   4766   /* Deal with function syms.  */
   4767   if (h->type == STT_FUNC
   4768       || h->type == STT_GNU_IFUNC
   4769       || h->needs_plt)
   4770     {
   4771       bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
   4772 			   || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
   4773       /* Discard dyn_relocs when non-pic if we've decided that a
   4774 	 function symbol is local.  */
   4775       if (!bfd_link_pic (info) && local)
   4776 	ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4777 
   4778       /* Clear procedure linkage table information for any symbol that
   4779 	 won't need a .plt entry.  */
   4780       struct plt_entry *ent;
   4781       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   4782 	if (ent->plt.refcount > 0)
   4783 	  break;
   4784       if (ent == NULL
   4785 	  || (h->type != STT_GNU_IFUNC
   4786 	      && local
   4787 	      && (htab->can_convert_all_inline_plt
   4788 		  || (ppc_elf_hash_entry (h)->tls_mask
   4789 		      & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)))
   4790 	{
   4791 	  /* A PLT entry is not required/allowed when:
   4792 
   4793 	     1. We are not using ld.so; because then the PLT entry
   4794 	     can't be set up, so we can't use one.  In this case,
   4795 	     ppc_elf_adjust_dynamic_symbol won't even be called.
   4796 
   4797 	     2. GC has rendered the entry unused.
   4798 
   4799 	     3. We know for certain that a call to this symbol
   4800 	     will go to this object, or will remain undefined.  */
   4801 	  h->plt.plist = NULL;
   4802 	  h->needs_plt = 0;
   4803 	  h->pointer_equality_needed = 0;
   4804 	}
   4805       else
   4806 	{
   4807 	  /* Taking a function's address in a read/write section
   4808 	     doesn't require us to define the function symbol in the
   4809 	     executable on a plt call stub.  A dynamic reloc can
   4810 	     be used instead, giving better runtime performance.
   4811 	     (Calls via that function pointer don't need to bounce
   4812 	     through the plt call stub.)  Similarly, use a dynamic
   4813 	     reloc for a weak reference when possible, allowing the
   4814 	     resolution of the symbol to be set at load time rather
   4815 	     than link time.  */
   4816 	  if ((h->pointer_equality_needed
   4817 	       || (h->non_got_ref
   4818 		   && !h->ref_regular_nonweak
   4819 		   && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
   4820 	      && !htab->is_vxworks
   4821 	      && !ppc_elf_hash_entry (h)->has_sda_refs
   4822 	      && !readonly_dynrelocs (h))
   4823 	    {
   4824 	      h->pointer_equality_needed = 0;
   4825 	      /* If we haven't seen a branch reloc and the symbol
   4826 		 isn't an ifunc then we don't need a plt entry.  */
   4827 	      if (!h->needs_plt && h->type != STT_GNU_IFUNC)
   4828 		h->plt.plist = NULL;
   4829 	    }
   4830 	  else if (!bfd_link_pic (info))
   4831 	    /* We are going to be defining the function symbol on the
   4832 	       plt stub, so no dyn_relocs needed when non-pic.  */
   4833 	    ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4834 	}
   4835       h->protected_def = 0;
   4836       /* Function symbols can't have copy relocs.  */
   4837       return TRUE;
   4838     }
   4839   else
   4840     h->plt.plist = NULL;
   4841 
   4842   /* If this is a weak symbol, and there is a real definition, the
   4843      processor independent code will have arranged for us to see the
   4844      real definition first, and we can just use the same value.  */
   4845   if (h->is_weakalias)
   4846     {
   4847       struct elf_link_hash_entry *def = weakdef (h);
   4848       BFD_ASSERT (def->root.type == bfd_link_hash_defined);
   4849       h->root.u.def.section = def->root.u.def.section;
   4850       h->root.u.def.value = def->root.u.def.value;
   4851       if (def->root.u.def.section == htab->elf.sdynbss
   4852 	  || def->root.u.def.section == htab->elf.sdynrelro
   4853 	  || def->root.u.def.section == htab->dynsbss)
   4854 	ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4855       return TRUE;
   4856     }
   4857 
   4858   /* This is a reference to a symbol defined by a dynamic object which
   4859      is not a function.  */
   4860 
   4861   /* If we are creating a shared library, we must presume that the
   4862      only references to the symbol are via the global offset table.
   4863      For such cases we need not do anything here; the relocations will
   4864      be handled correctly by relocate_section.  */
   4865   if (bfd_link_pic (info))
   4866     {
   4867       h->protected_def = 0;
   4868       return TRUE;
   4869     }
   4870 
   4871   /* If there are no references to this symbol that do not use the
   4872      GOT, we don't need to generate a copy reloc.  */
   4873   if (!h->non_got_ref)
   4874     {
   4875       h->protected_def = 0;
   4876       return TRUE;
   4877     }
   4878 
   4879   /* Protected variables do not work with .dynbss.  The copy in
   4880      .dynbss won't be used by the shared library with the protected
   4881      definition for the variable.  Editing to PIC, or text relocations
   4882      are preferable to an incorrect program.  */
   4883   if (h->protected_def)
   4884     {
   4885       if (ELIMINATE_COPY_RELOCS
   4886 	  && ppc_elf_hash_entry (h)->has_addr16_ha
   4887 	  && ppc_elf_hash_entry (h)->has_addr16_lo
   4888 	  && htab->params->pic_fixup == 0
   4889 	  && info->disable_target_specific_optimizations <= 1)
   4890 	htab->params->pic_fixup = 1;
   4891       return TRUE;
   4892     }
   4893 
   4894   /* If -z nocopyreloc was given, we won't generate them either.  */
   4895   if (info->nocopyreloc)
   4896     return TRUE;
   4897 
   4898    /* If we don't find any dynamic relocs in read-only sections, then
   4899       we'll be keeping the dynamic relocs and avoiding the copy reloc.
   4900       We can't do this if there are any small data relocations.  This
   4901       doesn't work on VxWorks, where we can not have dynamic
   4902       relocations (other than copy and jump slot relocations) in an
   4903       executable.  */
   4904   if (ELIMINATE_COPY_RELOCS
   4905       && !ppc_elf_hash_entry (h)->has_sda_refs
   4906       && !htab->is_vxworks
   4907       && !h->def_regular
   4908       && !alias_readonly_dynrelocs (h))
   4909     return TRUE;
   4910 
   4911   /* We must allocate the symbol in our .dynbss section, which will
   4912      become part of the .bss section of the executable.  There will be
   4913      an entry for this symbol in the .dynsym section.  The dynamic
   4914      object will contain position independent code, so all references
   4915      from the dynamic object to this symbol will go through the global
   4916      offset table.  The dynamic linker will use the .dynsym entry to
   4917      determine the address it must put in the global offset table, so
   4918      both the dynamic object and the regular object will refer to the
   4919      same memory location for the variable.
   4920 
   4921      Of course, if the symbol is referenced using SDAREL relocs, we
   4922      must instead allocate it in .sbss.  */
   4923   if (ppc_elf_hash_entry (h)->has_sda_refs)
   4924     s = htab->dynsbss;
   4925   else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
   4926     s = htab->elf.sdynrelro;
   4927   else
   4928     s = htab->elf.sdynbss;
   4929   BFD_ASSERT (s != NULL);
   4930 
   4931   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
   4932     {
   4933       asection *srel;
   4934 
   4935       /* We must generate a R_PPC_COPY reloc to tell the dynamic
   4936 	 linker to copy the initial value out of the dynamic object
   4937 	 and into the runtime process image.  */
   4938       if (ppc_elf_hash_entry (h)->has_sda_refs)
   4939 	srel = htab->relsbss;
   4940       else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
   4941 	srel = htab->elf.sreldynrelro;
   4942       else
   4943 	srel = htab->elf.srelbss;
   4944       BFD_ASSERT (srel != NULL);
   4945       srel->size += sizeof (Elf32_External_Rela);
   4946       h->needs_copy = 1;
   4947     }
   4948 
   4949   /* We no longer want dyn_relocs.  */
   4950   ppc_elf_hash_entry (h)->dyn_relocs = NULL;
   4951   return _bfd_elf_adjust_dynamic_copy (info, h, s);
   4952 }
   4953 
   4954 /* Generate a symbol to mark plt call stubs.  For non-PIC code the sym is
   4956    xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
   4957    specifying the addend on the plt relocation.  For -fpic code, the sym
   4958    is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
   4959    xxxxxxxx.got2.plt_pic32.<callee>.  */
   4960 
   4961 static bfd_boolean
   4962 add_stub_sym (struct plt_entry *ent,
   4963 	      struct elf_link_hash_entry *h,
   4964 	      struct bfd_link_info *info)
   4965 {
   4966   struct elf_link_hash_entry *sh;
   4967   size_t len1, len2, len3;
   4968   char *name;
   4969   const char *stub;
   4970   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   4971 
   4972   if (bfd_link_pic (info))
   4973     stub = ".plt_pic32.";
   4974   else
   4975     stub = ".plt_call32.";
   4976 
   4977   len1 = strlen (h->root.root.string);
   4978   len2 = strlen (stub);
   4979   len3 = 0;
   4980   if (ent->sec)
   4981     len3 = strlen (ent->sec->name);
   4982   name = bfd_malloc (len1 + len2 + len3 + 9);
   4983   if (name == NULL)
   4984     return FALSE;
   4985   sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
   4986   if (ent->sec)
   4987     memcpy (name + 8, ent->sec->name, len3);
   4988   memcpy (name + 8 + len3, stub, len2);
   4989   memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
   4990   sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
   4991   if (sh == NULL)
   4992     return FALSE;
   4993   if (sh->root.type == bfd_link_hash_new)
   4994     {
   4995       sh->root.type = bfd_link_hash_defined;
   4996       sh->root.u.def.section = htab->glink;
   4997       sh->root.u.def.value = ent->glink_offset;
   4998       sh->ref_regular = 1;
   4999       sh->def_regular = 1;
   5000       sh->ref_regular_nonweak = 1;
   5001       sh->forced_local = 1;
   5002       sh->non_elf = 0;
   5003       sh->root.linker_def = 1;
   5004     }
   5005   return TRUE;
   5006 }
   5007 
   5008 /* Allocate NEED contiguous space in .got, and return the offset.
   5009    Handles allocation of the got header when crossing 32k.  */
   5010 
   5011 static bfd_vma
   5012 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
   5013 {
   5014   bfd_vma where;
   5015   unsigned int max_before_header;
   5016 
   5017   if (htab->plt_type == PLT_VXWORKS)
   5018     {
   5019       where = htab->elf.sgot->size;
   5020       htab->elf.sgot->size += need;
   5021     }
   5022   else
   5023     {
   5024       max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
   5025       if (need <= htab->got_gap)
   5026 	{
   5027 	  where = max_before_header - htab->got_gap;
   5028 	  htab->got_gap -= need;
   5029 	}
   5030       else
   5031 	{
   5032 	  if (htab->elf.sgot->size + need > max_before_header
   5033 	      && htab->elf.sgot->size <= max_before_header)
   5034 	    {
   5035 	      htab->got_gap = max_before_header - htab->elf.sgot->size;
   5036 	      htab->elf.sgot->size = max_before_header + htab->got_header_size;
   5037 	    }
   5038 	  where = htab->elf.sgot->size;
   5039 	  htab->elf.sgot->size += need;
   5040 	}
   5041     }
   5042   return where;
   5043 }
   5044 
   5045 /* Calculate size of GOT entries for symbol given its TLS_MASK.
   5046    TLS_LD is excluded because those go in a special GOT slot.  */
   5047 
   5048 static inline unsigned int
   5049 got_entries_needed (int tls_mask)
   5050 {
   5051   unsigned int need;
   5052   if ((tls_mask & TLS_TLS) == 0)
   5053     need = 4;
   5054   else
   5055     {
   5056       need = 0;
   5057       if ((tls_mask & TLS_GD) != 0)
   5058 	need += 8;
   5059       if ((tls_mask & (TLS_TPREL | TLS_GDIE)) != 0)
   5060 	need += 4;
   5061       if ((tls_mask & TLS_DTPREL) != 0)
   5062 	need += 4;
   5063     }
   5064   return need;
   5065 }
   5066 
   5067 /* If H is undefined, make it dynamic if that makes sense.  */
   5068 
   5069 static bfd_boolean
   5070 ensure_undef_dynamic (struct bfd_link_info *info,
   5071 		      struct elf_link_hash_entry *h)
   5072 {
   5073   struct elf_link_hash_table *htab = elf_hash_table (info);
   5074 
   5075   if (htab->dynamic_sections_created
   5076       && ((info->dynamic_undefined_weak != 0
   5077 	   && h->root.type == bfd_link_hash_undefweak)
   5078 	  || h->root.type == bfd_link_hash_undefined)
   5079       && h->dynindx == -1
   5080       && !h->forced_local
   5081       && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
   5082     return bfd_elf_link_record_dynamic_symbol (info, h);
   5083   return TRUE;
   5084 }
   5085 
   5086 /* Allocate space in associated reloc sections for dynamic relocs.  */
   5087 
   5088 static bfd_boolean
   5089 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
   5090 {
   5091   struct bfd_link_info *info = inf;
   5092   struct ppc_elf_link_hash_entry *eh;
   5093   struct ppc_elf_link_hash_table *htab;
   5094   struct elf_dyn_relocs *p;
   5095   bfd_boolean dyn;
   5096 
   5097   if (h->root.type == bfd_link_hash_indirect)
   5098     return TRUE;
   5099 
   5100   htab = ppc_elf_hash_table (info);
   5101   eh = (struct ppc_elf_link_hash_entry *) h;
   5102   if (eh->elf.got.refcount > 0
   5103       || (ELIMINATE_COPY_RELOCS
   5104 	  && !eh->elf.def_regular
   5105 	  && eh->elf.protected_def
   5106 	  && eh->has_addr16_ha
   5107 	  && eh->has_addr16_lo
   5108 	  && htab->params->pic_fixup > 0))
   5109     {
   5110       unsigned int need;
   5111 
   5112       /* Make sure this symbol is output as a dynamic symbol.  */
   5113       if (!ensure_undef_dynamic (info, &eh->elf))
   5114 	return FALSE;
   5115 
   5116       need = 0;
   5117       if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5118 	{
   5119 	  if (SYMBOL_REFERENCES_LOCAL (info, &eh->elf))
   5120 	    /* We'll just use htab->tlsld_got.offset.  This should
   5121 	       always be the case.  It's a little odd if we have
   5122 	       a local dynamic reloc against a non-local symbol.  */
   5123 	    htab->tlsld_got.refcount += 1;
   5124 	  else
   5125 	    need += 8;
   5126 	}
   5127       need += got_entries_needed (eh->tls_mask);
   5128       if (need == 0)
   5129 	eh->elf.got.offset = (bfd_vma) -1;
   5130       else
   5131 	{
   5132 	  eh->elf.got.offset = allocate_got (htab, need);
   5133 	  if (((bfd_link_pic (info)
   5134 		&& !((eh->tls_mask & TLS_TLS) != 0
   5135 		     && bfd_link_executable (info)
   5136 		     && SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
   5137 	       || (htab->elf.dynamic_sections_created
   5138 		   && eh->elf.dynindx != -1
   5139 		   && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
   5140 	      && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
   5141 	    {
   5142 	      asection *rsec;
   5143 
   5144 	      need *= sizeof (Elf32_External_Rela) / 4;
   5145 	      if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5146 		need -= sizeof (Elf32_External_Rela);
   5147 	      rsec = htab->elf.srelgot;
   5148 	      if (eh->elf.type == STT_GNU_IFUNC)
   5149 		rsec = htab->elf.irelplt;
   5150 	      rsec->size += need;
   5151 	    }
   5152 	}
   5153     }
   5154   else
   5155     eh->elf.got.offset = (bfd_vma) -1;
   5156 
   5157   /* If no dynamic sections we can't have dynamic relocs, except for
   5158      IFUNCs which are handled even in static executables.  */
   5159   if (!htab->elf.dynamic_sections_created
   5160       && h->type != STT_GNU_IFUNC)
   5161     eh->dyn_relocs = NULL;
   5162 
   5163   /* Discard relocs on undefined symbols that must be local.  */
   5164   else if (h->root.type == bfd_link_hash_undefined
   5165 	   && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   5166     eh->dyn_relocs = NULL;
   5167 
   5168   /* Also discard relocs on undefined weak syms with non-default
   5169      visibility, or when dynamic_undefined_weak says so.  */
   5170   else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   5171     eh->dyn_relocs = NULL;
   5172 
   5173   if (eh->dyn_relocs == NULL)
   5174     ;
   5175 
   5176   /* In the shared -Bsymbolic case, discard space allocated for
   5177      dynamic pc-relative relocs against symbols which turn out to be
   5178      defined in regular objects.  For the normal shared case, discard
   5179      space for relocs that have become local due to symbol visibility
   5180      changes.  */
   5181   else if (bfd_link_pic (info))
   5182     {
   5183       /* Relocs that use pc_count are those that appear on a call insn,
   5184 	 or certain REL relocs (see must_be_dyn_reloc) that can be
   5185 	 generated via assembly.  We want calls to protected symbols to
   5186 	 resolve directly to the function rather than going via the plt.
   5187 	 If people want function pointer comparisons to work as expected
   5188 	 then they should avoid writing weird assembly.  */
   5189       if (SYMBOL_CALLS_LOCAL (info, h))
   5190 	{
   5191 	  struct elf_dyn_relocs **pp;
   5192 
   5193 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   5194 	    {
   5195 	      p->count -= p->pc_count;
   5196 	      p->pc_count = 0;
   5197 	      if (p->count == 0)
   5198 		*pp = p->next;
   5199 	      else
   5200 		pp = &p->next;
   5201 	    }
   5202 	}
   5203 
   5204       if (htab->is_vxworks)
   5205 	{
   5206 	  struct elf_dyn_relocs **pp;
   5207 
   5208 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   5209 	    {
   5210 	      if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
   5211 		*pp = p->next;
   5212 	      else
   5213 		pp = &p->next;
   5214 	    }
   5215 	}
   5216 
   5217       if (eh->dyn_relocs != NULL)
   5218 	{
   5219 	  /* Make sure this symbol is output as a dynamic symbol.  */
   5220 	  if (!ensure_undef_dynamic (info, h))
   5221 	    return FALSE;
   5222 	}
   5223     }
   5224   else if (ELIMINATE_COPY_RELOCS)
   5225     {
   5226       /* For the non-pic case, discard space for relocs against
   5227 	 symbols which turn out to need copy relocs or are not
   5228 	 dynamic.  */
   5229       if (h->dynamic_adjusted
   5230 	  && !h->def_regular
   5231 	  && !ELF_COMMON_DEF_P (h)
   5232 	  && !(h->protected_def
   5233 	       && eh->has_addr16_ha
   5234 	       && eh->has_addr16_lo
   5235 	       && htab->params->pic_fixup > 0))
   5236 	{
   5237 	  /* Make sure this symbol is output as a dynamic symbol.  */
   5238 	  if (!ensure_undef_dynamic (info, h))
   5239 	    return FALSE;
   5240 
   5241 	  if (h->dynindx == -1)
   5242 	    eh->dyn_relocs = NULL;
   5243 	}
   5244       else
   5245 	eh->dyn_relocs = NULL;
   5246     }
   5247 
   5248   /* Allocate space.  */
   5249   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   5250     {
   5251       asection *sreloc = elf_section_data (p->sec)->sreloc;
   5252       if (eh->elf.type == STT_GNU_IFUNC)
   5253 	sreloc = htab->elf.irelplt;
   5254       sreloc->size += p->count * sizeof (Elf32_External_Rela);
   5255     }
   5256 
   5257   /* Handle PLT relocs.  Done last, after dynindx has settled.
   5258      We might need a PLT entry when the symbol
   5259      a) is dynamic, or
   5260      b) is an ifunc, or
   5261      c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or
   5262      d) has plt16 relocs and we are linking statically.  */
   5263   dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
   5264   if (dyn
   5265       || h->type == STT_GNU_IFUNC
   5266       || (h->needs_plt && h->dynamic_adjusted)
   5267       || (h->needs_plt
   5268 	  && h->def_regular
   5269 	  && !htab->elf.dynamic_sections_created
   5270 	  && !htab->can_convert_all_inline_plt
   5271 	  && (ppc_elf_hash_entry (h)->tls_mask
   5272 	      & (TLS_TLS | PLT_KEEP)) == PLT_KEEP))
   5273     {
   5274       struct plt_entry *ent;
   5275       bfd_boolean doneone = FALSE;
   5276       bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
   5277 
   5278       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   5279 	if (ent->plt.refcount > 0)
   5280 	  {
   5281 	    asection *s = htab->elf.splt;
   5282 
   5283 	    if (!dyn)
   5284 	      {
   5285 		if (h->type == STT_GNU_IFUNC)
   5286 		  s = htab->elf.iplt;
   5287 		else
   5288 		  s = htab->pltlocal;
   5289 	      }
   5290 
   5291 	    if (htab->plt_type == PLT_NEW || !dyn)
   5292 	      {
   5293 		if (!doneone)
   5294 		  {
   5295 		    plt_offset = s->size;
   5296 		    s->size += 4;
   5297 		  }
   5298 		ent->plt.offset = plt_offset;
   5299 
   5300 		if (s == htab->pltlocal)
   5301 		  ent->glink_offset = glink_offset;
   5302 		else
   5303 		  {
   5304 		    s = htab->glink;
   5305 		    if (!doneone || bfd_link_pic (info))
   5306 		      {
   5307 			glink_offset = s->size;
   5308 			s->size += GLINK_ENTRY_SIZE (htab, h);
   5309 		      }
   5310 		    if (!doneone
   5311 			&& !bfd_link_pic (info)
   5312 			&& h->def_dynamic
   5313 			&& !h->def_regular)
   5314 		      {
   5315 			h->root.u.def.section = s;
   5316 			h->root.u.def.value = glink_offset;
   5317 		      }
   5318 		    ent->glink_offset = glink_offset;
   5319 
   5320 		    if (htab->params->emit_stub_syms
   5321 			&& !add_stub_sym (ent, h, info))
   5322 		      return FALSE;
   5323 		  }
   5324 	      }
   5325 	    else
   5326 	      {
   5327 		if (!doneone)
   5328 		  {
   5329 		    /* If this is the first .plt entry, make room
   5330 		       for the special first entry.  */
   5331 		    if (s->size == 0)
   5332 		      s->size += htab->plt_initial_entry_size;
   5333 
   5334 		    /* The PowerPC PLT is actually composed of two
   5335 		       parts, the first part is 2 words (for a load
   5336 		       and a jump), and then there is a remaining
   5337 		       word available at the end.  */
   5338 		    plt_offset = (htab->plt_initial_entry_size
   5339 				  + (htab->plt_slot_size
   5340 				     * ((s->size
   5341 					 - htab->plt_initial_entry_size)
   5342 					/ htab->plt_entry_size)));
   5343 
   5344 		    /* If this symbol is not defined in a regular
   5345 		       file, and we are not generating a shared
   5346 		       library, then set the symbol to this location
   5347 		       in the .plt.  This is to avoid text
   5348 		       relocations, and is required to make
   5349 		       function pointers compare as equal between
   5350 		       the normal executable and the shared library.  */
   5351 		    if (! bfd_link_pic (info)
   5352 			&& h->def_dynamic
   5353 			&& !h->def_regular)
   5354 		      {
   5355 			h->root.u.def.section = s;
   5356 			h->root.u.def.value = plt_offset;
   5357 		      }
   5358 
   5359 		    /* Make room for this entry.  */
   5360 		    s->size += htab->plt_entry_size;
   5361 		    /* After the 8192nd entry, room for two entries
   5362 		       is allocated.  */
   5363 		    if (htab->plt_type == PLT_OLD
   5364 			&& (s->size - htab->plt_initial_entry_size)
   5365 			/ htab->plt_entry_size
   5366 			> PLT_NUM_SINGLE_ENTRIES)
   5367 		      s->size += htab->plt_entry_size;
   5368 		  }
   5369 		ent->plt.offset = plt_offset;
   5370 	      }
   5371 
   5372 	    /* We also need to make an entry in the .rela.plt section.  */
   5373 	    if (!doneone)
   5374 	      {
   5375 		if (!dyn)
   5376 		  {
   5377 		    if (h->type == STT_GNU_IFUNC)
   5378 		      {
   5379 			s = htab->elf.irelplt;
   5380 			s->size += sizeof (Elf32_External_Rela);
   5381 		      }
   5382 		    else if (bfd_link_pic (info))
   5383 		      {
   5384 			s = htab->relpltlocal;
   5385 			s->size += sizeof (Elf32_External_Rela);
   5386 		      }
   5387 		  }
   5388 		else
   5389 		  {
   5390 		    htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
   5391 
   5392 		    if (htab->plt_type == PLT_VXWORKS)
   5393 		      {
   5394 			/* Allocate space for the unloaded relocations.  */
   5395 			if (!bfd_link_pic (info)
   5396 			    && htab->elf.dynamic_sections_created)
   5397 			  {
   5398 			    if (ent->plt.offset
   5399 				== (bfd_vma) htab->plt_initial_entry_size)
   5400 			      {
   5401 				htab->srelplt2->size
   5402 				  += (sizeof (Elf32_External_Rela)
   5403 				      * VXWORKS_PLTRESOLVE_RELOCS);
   5404 			      }
   5405 
   5406 			    htab->srelplt2->size
   5407 			      += (sizeof (Elf32_External_Rela)
   5408 				  * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
   5409 			  }
   5410 
   5411 			/* Every PLT entry has an associated GOT entry in
   5412 			   .got.plt.  */
   5413 			htab->elf.sgotplt->size += 4;
   5414 		      }
   5415 		  }
   5416 		doneone = TRUE;
   5417 	      }
   5418 	  }
   5419 	else
   5420 	  ent->plt.offset = (bfd_vma) -1;
   5421 
   5422       if (!doneone)
   5423 	{
   5424 	  h->plt.plist = NULL;
   5425 	  h->needs_plt = 0;
   5426 	}
   5427     }
   5428   else
   5429     {
   5430       h->plt.plist = NULL;
   5431       h->needs_plt = 0;
   5432     }
   5433 
   5434   return TRUE;
   5435 }
   5436 
   5437 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
   5438    read-only sections.  */
   5439 
   5440 static bfd_boolean
   5441 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
   5442 {
   5443   asection *sec;
   5444 
   5445   if (h->root.type == bfd_link_hash_indirect)
   5446     return TRUE;
   5447 
   5448   sec = readonly_dynrelocs (h);
   5449   if (sec != NULL)
   5450     {
   5451       struct bfd_link_info *info = (struct bfd_link_info *) info_p;
   5452 
   5453       info->flags |= DF_TEXTREL;
   5454       /* xgettext:c-format */
   5455       info->callbacks->minfo (_("%pB: dynamic relocation against `%pT' "
   5456 				"in read-only section `%pA'\n"),
   5457 			      sec->owner, h->root.root.string, sec);
   5458       if ((info->warn_shared_textrel && bfd_link_pic (info))
   5459 	  || info->error_textrel)
   5460 	/* xgettext:c-format */
   5461 	info->callbacks->einfo (_("%P: %pB: warning: relocation against `%s' "
   5462 				  "in read-only section `%pA'\n"),
   5463 				sec->owner, h->root.root.string, sec);
   5464 
   5465       /* Not an error, just cut short the traversal.  */
   5466       return FALSE;
   5467     }
   5468   return TRUE;
   5469 }
   5470 
   5471 static const unsigned char glink_eh_frame_cie[] =
   5472 {
   5473   0, 0, 0, 16,				/* length.  */
   5474   0, 0, 0, 0,				/* id.  */
   5475   1,					/* CIE version.  */
   5476   'z', 'R', 0,				/* Augmentation string.  */
   5477   4,					/* Code alignment.  */
   5478   0x7c,					/* Data alignment.  */
   5479   65,					/* RA reg.  */
   5480   1,					/* Augmentation size.  */
   5481   DW_EH_PE_pcrel | DW_EH_PE_sdata4,	/* FDE encoding.  */
   5482   DW_CFA_def_cfa, 1, 0			/* def_cfa: r1 offset 0.  */
   5483 };
   5484 
   5485 /* Set the sizes of the dynamic sections.  */
   5486 
   5487 static bfd_boolean
   5488 ppc_elf_size_dynamic_sections (bfd *output_bfd,
   5489 			       struct bfd_link_info *info)
   5490 {
   5491   struct ppc_elf_link_hash_table *htab;
   5492   asection *s;
   5493   bfd_boolean relocs;
   5494   bfd *ibfd;
   5495 
   5496 #ifdef DEBUG
   5497   fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
   5498 #endif
   5499 
   5500   htab = ppc_elf_hash_table (info);
   5501   BFD_ASSERT (htab->elf.dynobj != NULL);
   5502 
   5503   if (elf_hash_table (info)->dynamic_sections_created)
   5504     {
   5505       /* Set the contents of the .interp section to the interpreter.  */
   5506       if (bfd_link_executable (info) && !info->nointerp)
   5507 	{
   5508 	  s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
   5509 	  BFD_ASSERT (s != NULL);
   5510 	  s->size = sizeof ELF_DYNAMIC_INTERPRETER;
   5511 	  s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
   5512 	}
   5513     }
   5514 
   5515   if (htab->plt_type == PLT_OLD)
   5516     htab->got_header_size = 16;
   5517   else if (htab->plt_type == PLT_NEW)
   5518     htab->got_header_size = 12;
   5519 
   5520   /* Set up .got offsets for local syms, and space for local dynamic
   5521      relocs.  */
   5522   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   5523     {
   5524       bfd_signed_vma *local_got;
   5525       bfd_signed_vma *end_local_got;
   5526       struct plt_entry **local_plt;
   5527       struct plt_entry **end_local_plt;
   5528       char *lgot_masks;
   5529       bfd_size_type locsymcount;
   5530       Elf_Internal_Shdr *symtab_hdr;
   5531 
   5532       if (!is_ppc_elf (ibfd))
   5533 	continue;
   5534 
   5535       for (s = ibfd->sections; s != NULL; s = s->next)
   5536 	{
   5537 	  struct ppc_dyn_relocs *p;
   5538 
   5539 	  for (p = ((struct ppc_dyn_relocs *)
   5540 		    elf_section_data (s)->local_dynrel);
   5541 	       p != NULL;
   5542 	       p = p->next)
   5543 	    {
   5544 	      if (!bfd_is_abs_section (p->sec)
   5545 		  && bfd_is_abs_section (p->sec->output_section))
   5546 		{
   5547 		  /* Input section has been discarded, either because
   5548 		     it is a copy of a linkonce section or due to
   5549 		     linker script /DISCARD/, so we'll be discarding
   5550 		     the relocs too.  */
   5551 		}
   5552 	      else if (htab->is_vxworks
   5553 		       && strcmp (p->sec->output_section->name,
   5554 				  ".tls_vars") == 0)
   5555 		{
   5556 		  /* Relocations in vxworks .tls_vars sections are
   5557 		     handled specially by the loader.  */
   5558 		}
   5559 	      else if (p->count != 0)
   5560 		{
   5561 		  asection *sreloc = elf_section_data (p->sec)->sreloc;
   5562 		  if (p->ifunc)
   5563 		    sreloc = htab->elf.irelplt;
   5564 		  sreloc->size += p->count * sizeof (Elf32_External_Rela);
   5565 		  if ((p->sec->output_section->flags
   5566 		       & (SEC_READONLY | SEC_ALLOC))
   5567 		      == (SEC_READONLY | SEC_ALLOC))
   5568 		    {
   5569 		      info->flags |= DF_TEXTREL;
   5570 		      info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
   5571 					      p->sec->owner, p->sec);
   5572 		    }
   5573 		}
   5574 	    }
   5575 	}
   5576 
   5577       local_got = elf_local_got_refcounts (ibfd);
   5578       if (!local_got)
   5579 	continue;
   5580 
   5581       symtab_hdr = &elf_symtab_hdr (ibfd);
   5582       locsymcount = symtab_hdr->sh_info;
   5583       end_local_got = local_got + locsymcount;
   5584       local_plt = (struct plt_entry **) end_local_got;
   5585       end_local_plt = local_plt + locsymcount;
   5586       lgot_masks = (char *) end_local_plt;
   5587 
   5588       for (; local_got < end_local_got; ++local_got, ++lgot_masks)
   5589 	if (*local_got > 0)
   5590 	  {
   5591 	    unsigned int need;
   5592 	    if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
   5593 	      htab->tlsld_got.refcount += 1;
   5594 	    need = got_entries_needed (*lgot_masks);
   5595 	    if (need == 0)
   5596 	      *local_got = (bfd_vma) -1;
   5597 	    else
   5598 	      {
   5599 		*local_got = allocate_got (htab, need);
   5600 		if (bfd_link_pic (info)
   5601 		    && !((*lgot_masks & TLS_TLS) != 0
   5602 			 && bfd_link_executable (info)))
   5603 		  {
   5604 		    asection *srel;
   5605 
   5606 		    need *= sizeof (Elf32_External_Rela) / 4;
   5607 		    srel = htab->elf.srelgot;
   5608 		    if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5609 		      srel = htab->elf.irelplt;
   5610 		    srel->size += need;
   5611 		  }
   5612 	      }
   5613 	  }
   5614 	else
   5615 	  *local_got = (bfd_vma) -1;
   5616 
   5617       if (htab->is_vxworks)
   5618 	continue;
   5619 
   5620       /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt.  */
   5621       lgot_masks = (char *) end_local_plt;
   5622       for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks)
   5623 	{
   5624 	  struct plt_entry *ent;
   5625 	  bfd_boolean doneone = FALSE;
   5626 	  bfd_vma plt_offset = 0, glink_offset = (bfd_vma) -1;
   5627 
   5628 	  for (ent = *local_plt; ent != NULL; ent = ent->next)
   5629 	    if (ent->plt.refcount > 0)
   5630 	      {
   5631 		if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5632 		  s = htab->elf.iplt;
   5633 		else if (htab->can_convert_all_inline_plt
   5634 			 || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP)
   5635 		  {
   5636 		    ent->plt.offset = (bfd_vma) -1;
   5637 		    continue;
   5638 		  }
   5639 		else
   5640 		  s = htab->pltlocal;
   5641 
   5642 		if (!doneone)
   5643 		  {
   5644 		    plt_offset = s->size;
   5645 		    s->size += 4;
   5646 		  }
   5647 		ent->plt.offset = plt_offset;
   5648 
   5649 		if (s != htab->pltlocal && (!doneone || bfd_link_pic (info)))
   5650 		  {
   5651 		    s = htab->glink;
   5652 		    glink_offset = s->size;
   5653 		    s->size += GLINK_ENTRY_SIZE (htab, NULL);
   5654 		  }
   5655 		ent->glink_offset = glink_offset;
   5656 
   5657 		if (!doneone)
   5658 		  {
   5659 		    if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
   5660 		      {
   5661 			s = htab->elf.irelplt;
   5662 			s->size += sizeof (Elf32_External_Rela);
   5663 		      }
   5664 		    else if (bfd_link_pic (info))
   5665 		      {
   5666 			s = htab->relpltlocal;
   5667 			s->size += sizeof (Elf32_External_Rela);
   5668 		      }
   5669 		    doneone = TRUE;
   5670 		  }
   5671 	      }
   5672 	    else
   5673 	      ent->plt.offset = (bfd_vma) -1;
   5674 	}
   5675     }
   5676 
   5677   /* Allocate space for global sym dynamic relocs.  */
   5678   elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
   5679 
   5680   if (htab->tlsld_got.refcount > 0)
   5681     {
   5682       htab->tlsld_got.offset = allocate_got (htab, 8);
   5683       if (bfd_link_dll (info))
   5684 	htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
   5685     }
   5686   else
   5687     htab->tlsld_got.offset = (bfd_vma) -1;
   5688 
   5689   if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
   5690     {
   5691       unsigned int g_o_t = 32768;
   5692 
   5693       /* If we haven't allocated the header, do so now.  When we get here,
   5694 	 for old plt/got the got size will be 0 to 32764 (not allocated),
   5695 	 or 32780 to 65536 (header allocated).  For new plt/got, the
   5696 	 corresponding ranges are 0 to 32768 and 32780 to 65536.  */
   5697       if (htab->elf.sgot->size <= 32768)
   5698 	{
   5699 	  g_o_t = htab->elf.sgot->size;
   5700 	  if (htab->plt_type == PLT_OLD)
   5701 	    g_o_t += 4;
   5702 	  htab->elf.sgot->size += htab->got_header_size;
   5703 	}
   5704 
   5705       htab->elf.hgot->root.u.def.value = g_o_t;
   5706     }
   5707   if (bfd_link_pic (info))
   5708     {
   5709       struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   5710 
   5711       sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
   5712       sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
   5713     }
   5714   if (info->emitrelocations)
   5715     {
   5716       struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   5717 
   5718       if (sda != NULL && sda->ref_regular)
   5719 	sda->root.u.def.section->flags |= SEC_KEEP;
   5720       sda = htab->sdata[1].sym;
   5721       if (sda != NULL && sda->ref_regular)
   5722 	sda->root.u.def.section->flags |= SEC_KEEP;
   5723     }
   5724 
   5725   if (htab->glink != NULL
   5726       && htab->glink->size != 0
   5727       && htab->elf.dynamic_sections_created)
   5728     {
   5729       htab->glink_pltresolve = htab->glink->size;
   5730       /* Space for the branch table.  */
   5731       htab->glink->size
   5732 	+= htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
   5733       /* Pad out to align the start of PLTresolve.  */
   5734       htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
   5735 						 ? 63 : 15);
   5736       htab->glink->size += GLINK_PLTRESOLVE;
   5737 
   5738       if (htab->params->emit_stub_syms)
   5739 	{
   5740 	  struct elf_link_hash_entry *sh;
   5741 	  sh = elf_link_hash_lookup (&htab->elf, "__glink",
   5742 				     TRUE, FALSE, FALSE);
   5743 	  if (sh == NULL)
   5744 	    return FALSE;
   5745 	  if (sh->root.type == bfd_link_hash_new)
   5746 	    {
   5747 	      sh->root.type = bfd_link_hash_defined;
   5748 	      sh->root.u.def.section = htab->glink;
   5749 	      sh->root.u.def.value = htab->glink_pltresolve;
   5750 	      sh->ref_regular = 1;
   5751 	      sh->def_regular = 1;
   5752 	      sh->ref_regular_nonweak = 1;
   5753 	      sh->forced_local = 1;
   5754 	      sh->non_elf = 0;
   5755 	      sh->root.linker_def = 1;
   5756 	    }
   5757 	  sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
   5758 				     TRUE, FALSE, FALSE);
   5759 	  if (sh == NULL)
   5760 	    return FALSE;
   5761 	  if (sh->root.type == bfd_link_hash_new)
   5762 	    {
   5763 	      sh->root.type = bfd_link_hash_defined;
   5764 	      sh->root.u.def.section = htab->glink;
   5765 	      sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
   5766 	      sh->ref_regular = 1;
   5767 	      sh->def_regular = 1;
   5768 	      sh->ref_regular_nonweak = 1;
   5769 	      sh->forced_local = 1;
   5770 	      sh->non_elf = 0;
   5771 	      sh->root.linker_def = 1;
   5772 	    }
   5773 	}
   5774     }
   5775 
   5776   if (htab->glink != NULL
   5777       && htab->glink->size != 0
   5778       && htab->glink_eh_frame != NULL
   5779       && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
   5780       && _bfd_elf_eh_frame_present (info))
   5781     {
   5782       s = htab->glink_eh_frame;
   5783       s->size = sizeof (glink_eh_frame_cie) + 20;
   5784       if (bfd_link_pic (info))
   5785 	{
   5786 	  s->size += 4;
   5787 	  if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
   5788 	    s->size += 4;
   5789 	}
   5790     }
   5791 
   5792   /* We've now determined the sizes of the various dynamic sections.
   5793      Allocate memory for them.  */
   5794   relocs = FALSE;
   5795   for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
   5796     {
   5797       bfd_boolean strip_section = TRUE;
   5798 
   5799       if ((s->flags & SEC_LINKER_CREATED) == 0)
   5800 	continue;
   5801 
   5802       if (s == htab->elf.splt
   5803 	  || s == htab->elf.sgot)
   5804 	{
   5805 	  /* We'd like to strip these sections if they aren't needed, but if
   5806 	     we've exported dynamic symbols from them we must leave them.
   5807 	     It's too late to tell BFD to get rid of the symbols.  */
   5808 	  if (htab->elf.hplt != NULL)
   5809 	    strip_section = FALSE;
   5810 	  /* Strip this section if we don't need it; see the
   5811 	     comment below.  */
   5812 	}
   5813       else if (s == htab->elf.iplt
   5814 	       || s == htab->pltlocal
   5815 	       || s == htab->glink
   5816 	       || s == htab->glink_eh_frame
   5817 	       || s == htab->elf.sgotplt
   5818 	       || s == htab->sbss
   5819 	       || s == htab->elf.sdynbss
   5820 	       || s == htab->elf.sdynrelro
   5821 	       || s == htab->dynsbss)
   5822 	{
   5823 	  /* Strip these too.  */
   5824 	}
   5825       else if (s == htab->sdata[0].section
   5826 	       || s == htab->sdata[1].section)
   5827 	{
   5828 	  strip_section = (s->flags & SEC_KEEP) == 0;
   5829 	}
   5830       else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
   5831 	{
   5832 	  if (s->size != 0)
   5833 	    {
   5834 	      /* Remember whether there are any relocation sections.  */
   5835 	      relocs = TRUE;
   5836 
   5837 	      /* We use the reloc_count field as a counter if we need
   5838 		 to copy relocs into the output file.  */
   5839 	      s->reloc_count = 0;
   5840 	    }
   5841 	}
   5842       else
   5843 	{
   5844 	  /* It's not one of our sections, so don't allocate space.  */
   5845 	  continue;
   5846 	}
   5847 
   5848       if (s->size == 0 && strip_section)
   5849 	{
   5850 	  /* If we don't need this section, strip it from the
   5851 	     output file.  This is mostly to handle .rela.bss and
   5852 	     .rela.plt.  We must create both sections in
   5853 	     create_dynamic_sections, because they must be created
   5854 	     before the linker maps input sections to output
   5855 	     sections.  The linker does that before
   5856 	     adjust_dynamic_symbol is called, and it is that
   5857 	     function which decides whether anything needs to go
   5858 	     into these sections.  */
   5859 	  s->flags |= SEC_EXCLUDE;
   5860 	  continue;
   5861 	}
   5862 
   5863       if ((s->flags & SEC_HAS_CONTENTS) == 0)
   5864 	continue;
   5865 
   5866       /* Allocate memory for the section contents.  */
   5867       s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
   5868       if (s->contents == NULL)
   5869 	return FALSE;
   5870     }
   5871 
   5872   if (htab->elf.dynamic_sections_created)
   5873     {
   5874       /* Add some entries to the .dynamic section.  We fill in the
   5875 	 values later, in ppc_elf_finish_dynamic_sections, but we
   5876 	 must add the entries now so that we get the correct size for
   5877 	 the .dynamic section.  The DT_DEBUG entry is filled in by the
   5878 	 dynamic linker and used by the debugger.  */
   5879 #define add_dynamic_entry(TAG, VAL) \
   5880   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
   5881 
   5882       if (bfd_link_executable (info))
   5883 	{
   5884 	  if (!add_dynamic_entry (DT_DEBUG, 0))
   5885 	    return FALSE;
   5886 	}
   5887 
   5888       if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
   5889 	{
   5890 	  if (!add_dynamic_entry (DT_PLTGOT, 0)
   5891 	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
   5892 	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
   5893 	      || !add_dynamic_entry (DT_JMPREL, 0))
   5894 	    return FALSE;
   5895 	}
   5896 
   5897       if (htab->plt_type == PLT_NEW
   5898 	  && htab->glink != NULL
   5899 	  && htab->glink->size != 0)
   5900 	{
   5901 	  if (!add_dynamic_entry (DT_PPC_GOT, 0))
   5902 	    return FALSE;
   5903 	  if (!htab->params->no_tls_get_addr_opt
   5904 	      && htab->tls_get_addr != NULL
   5905 	      && htab->tls_get_addr->plt.plist != NULL
   5906 	      && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
   5907 	    return FALSE;
   5908 	}
   5909 
   5910       if (relocs)
   5911 	{
   5912 	  if (!add_dynamic_entry (DT_RELA, 0)
   5913 	      || !add_dynamic_entry (DT_RELASZ, 0)
   5914 	      || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
   5915 	    return FALSE;
   5916 	}
   5917 
   5918       /* If any dynamic relocs apply to a read-only section, then we
   5919 	 need a DT_TEXTREL entry.  */
   5920       if ((info->flags & DF_TEXTREL) == 0)
   5921 	elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
   5922 				info);
   5923 
   5924       if ((info->flags & DF_TEXTREL) != 0)
   5925 	{
   5926 	  if (!add_dynamic_entry (DT_TEXTREL, 0))
   5927 	    return FALSE;
   5928 	}
   5929       if (htab->is_vxworks
   5930 	  && !elf_vxworks_add_dynamic_entries (output_bfd, info))
   5931 	return FALSE;
   5932    }
   5933 #undef add_dynamic_entry
   5934 
   5935   if (htab->glink_eh_frame != NULL
   5936       && htab->glink_eh_frame->contents != NULL)
   5937     {
   5938       unsigned char *p = htab->glink_eh_frame->contents;
   5939       bfd_vma val;
   5940 
   5941       memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
   5942       /* CIE length (rewrite in case little-endian).  */
   5943       bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
   5944       p += sizeof (glink_eh_frame_cie);
   5945       /* FDE length.  */
   5946       val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
   5947       bfd_put_32 (htab->elf.dynobj, val, p);
   5948       p += 4;
   5949       /* CIE pointer.  */
   5950       val = p - htab->glink_eh_frame->contents;
   5951       bfd_put_32 (htab->elf.dynobj, val, p);
   5952       p += 4;
   5953       /* Offset to .glink.  Set later.  */
   5954       p += 4;
   5955       /* .glink size.  */
   5956       bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
   5957       p += 4;
   5958       /* Augmentation.  */
   5959       p += 1;
   5960 
   5961       if (bfd_link_pic (info)
   5962 	  && htab->elf.dynamic_sections_created)
   5963 	{
   5964 	  bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
   5965 	  if (adv < 64)
   5966 	    *p++ = DW_CFA_advance_loc + adv;
   5967 	  else if (adv < 256)
   5968 	    {
   5969 	      *p++ = DW_CFA_advance_loc1;
   5970 	      *p++ = adv;
   5971 	    }
   5972 	  else if (adv < 65536)
   5973 	    {
   5974 	      *p++ = DW_CFA_advance_loc2;
   5975 	      bfd_put_16 (htab->elf.dynobj, adv, p);
   5976 	      p += 2;
   5977 	    }
   5978 	  else
   5979 	    {
   5980 	      *p++ = DW_CFA_advance_loc4;
   5981 	      bfd_put_32 (htab->elf.dynobj, adv, p);
   5982 	      p += 4;
   5983 	    }
   5984 	  *p++ = DW_CFA_register;
   5985 	  *p++ = 65;
   5986 	  p++;
   5987 	  *p++ = DW_CFA_advance_loc + 4;
   5988 	  *p++ = DW_CFA_restore_extended;
   5989 	  *p++ = 65;
   5990 	}
   5991       BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
   5992 		  == htab->glink_eh_frame->size);
   5993     }
   5994 
   5995   return TRUE;
   5996 }
   5997 
   5998 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
   5999    if it looks like nothing is using them.  */
   6000 
   6001 static void
   6002 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
   6003 {
   6004   struct elf_link_hash_entry *sda = lsect->sym;
   6005 
   6006   if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
   6007     {
   6008       asection *s;
   6009 
   6010       s = bfd_get_section_by_name (output_bfd, lsect->name);
   6011       if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
   6012 	{
   6013 	  s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
   6014 	  if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
   6015 	    {
   6016 	      sda->def_regular = 0;
   6017 	      /* This is somewhat magic.  See elf_link_output_extsym.  */
   6018 	      sda->ref_dynamic = 1;
   6019 	      sda->forced_local = 0;
   6020 	    }
   6021 	}
   6022     }
   6023 }
   6024 
   6025 void
   6026 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
   6027 {
   6028   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   6029 
   6030   if (htab != NULL)
   6031     {
   6032       maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
   6033       maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
   6034     }
   6035 }
   6036 
   6037 
   6038 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
   6039 
   6040 static bfd_boolean
   6041 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
   6042 {
   6043   if (h->plt.plist != NULL
   6044       && !h->def_regular
   6045       && (!h->pointer_equality_needed
   6046 	  || !h->ref_regular_nonweak))
   6047     return FALSE;
   6048 
   6049   return _bfd_elf_hash_symbol (h);
   6050 }
   6051 
   6052 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
   6054 
   6055 /* Relaxation trampolines.  r12 is available for clobbering (r11, is
   6056    used for some functions that are allowed to break the ABI).  */
   6057 static const int shared_stub_entry[] =
   6058   {
   6059     0x7c0802a6, /* mflr 0 */
   6060     0x429f0005, /* bcl 20, 31, .Lxxx */
   6061     0x7d8802a6, /* mflr 12 */
   6062     0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
   6063     0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
   6064     0x7c0803a6, /* mtlr 0 */
   6065     0x7d8903a6, /* mtctr 12 */
   6066     0x4e800420, /* bctr */
   6067   };
   6068 
   6069 static const int stub_entry[] =
   6070   {
   6071     0x3d800000, /* lis 12,xxx@ha */
   6072     0x398c0000, /* addi 12,12,xxx@l */
   6073     0x7d8903a6, /* mtctr 12 */
   6074     0x4e800420, /* bctr */
   6075   };
   6076 
   6077 struct ppc_elf_relax_info
   6078 {
   6079   unsigned int workaround_size;
   6080   unsigned int picfixup_size;
   6081 };
   6082 
   6083 /* This function implements long branch trampolines, and the ppc476
   6084    icache bug workaround.  Any section needing trampolines or patch
   6085    space for the workaround has its size extended so that we can
   6086    add trampolines at the end of the section.  */
   6087 
   6088 static bfd_boolean
   6089 ppc_elf_relax_section (bfd *abfd,
   6090 		       asection *isec,
   6091 		       struct bfd_link_info *link_info,
   6092 		       bfd_boolean *again)
   6093 {
   6094   struct one_branch_fixup
   6095   {
   6096     struct one_branch_fixup *next;
   6097     asection *tsec;
   6098     /* Final link, can use the symbol offset.  For a
   6099        relocatable link we use the symbol's index.  */
   6100     bfd_vma toff;
   6101     bfd_vma trampoff;
   6102   };
   6103 
   6104   Elf_Internal_Shdr *symtab_hdr;
   6105   bfd_byte *contents = NULL;
   6106   Elf_Internal_Sym *isymbuf = NULL;
   6107   Elf_Internal_Rela *internal_relocs = NULL;
   6108   Elf_Internal_Rela *irel, *irelend = NULL;
   6109   struct one_branch_fixup *branch_fixups = NULL;
   6110   struct ppc_elf_relax_info *relax_info = NULL;
   6111   unsigned changes = 0;
   6112   bfd_boolean workaround_change;
   6113   struct ppc_elf_link_hash_table *htab;
   6114   bfd_size_type trampbase, trampoff, newsize, picfixup_size;
   6115   asection *got2;
   6116   bfd_boolean maybe_pasted;
   6117 
   6118   *again = FALSE;
   6119 
   6120   /* No need to do anything with non-alloc or non-code sections.  */
   6121   if ((isec->flags & SEC_ALLOC) == 0
   6122       || (isec->flags & SEC_CODE) == 0
   6123       || (isec->flags & SEC_LINKER_CREATED) != 0
   6124       || isec->size < 4)
   6125     return TRUE;
   6126 
   6127   /* We cannot represent the required PIC relocs in the output, so don't
   6128      do anything.  The linker doesn't support mixing -shared and -r
   6129      anyway.  */
   6130   if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
   6131     return TRUE;
   6132 
   6133   htab = ppc_elf_hash_table (link_info);
   6134   if (htab == NULL)
   6135     return TRUE;
   6136 
   6137   isec->size = (isec->size + 3) & -4;
   6138   if (isec->rawsize == 0)
   6139     isec->rawsize = isec->size;
   6140   trampbase = isec->size;
   6141 
   6142   BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
   6143 	      || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
   6144   isec->sec_info_type = SEC_INFO_TYPE_TARGET;
   6145 
   6146   if (htab->params->ppc476_workaround
   6147       || htab->params->pic_fixup > 0)
   6148     {
   6149       if (elf_section_data (isec)->sec_info == NULL)
   6150 	{
   6151 	  elf_section_data (isec)->sec_info
   6152 	    = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
   6153 	  if (elf_section_data (isec)->sec_info == NULL)
   6154 	    return FALSE;
   6155 	}
   6156       relax_info = elf_section_data (isec)->sec_info;
   6157       trampbase -= relax_info->workaround_size;
   6158     }
   6159 
   6160   maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
   6161 		  || strcmp (isec->output_section->name, ".fini") == 0);
   6162   /* Space for a branch around any trampolines.  */
   6163   trampoff = trampbase;
   6164   if (maybe_pasted && trampbase == isec->rawsize)
   6165     trampoff += 4;
   6166 
   6167   symtab_hdr = &elf_symtab_hdr (abfd);
   6168   picfixup_size = 0;
   6169   if (htab->params->branch_trampolines
   6170       || htab->params->pic_fixup > 0)
   6171     {
   6172       /* Get a copy of the native relocations.  */
   6173       if (isec->reloc_count != 0)
   6174 	{
   6175 	  internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
   6176 						       link_info->keep_memory);
   6177 	  if (internal_relocs == NULL)
   6178 	    goto error_return;
   6179 	}
   6180 
   6181       got2 = bfd_get_section_by_name (abfd, ".got2");
   6182 
   6183       irelend = internal_relocs + isec->reloc_count;
   6184       for (irel = internal_relocs; irel < irelend; irel++)
   6185 	{
   6186 	  unsigned long r_type = ELF32_R_TYPE (irel->r_info);
   6187 	  bfd_vma toff, roff;
   6188 	  asection *tsec;
   6189 	  struct one_branch_fixup *f;
   6190 	  size_t insn_offset = 0;
   6191 	  bfd_vma max_branch_offset = 0, val;
   6192 	  bfd_byte *hit_addr;
   6193 	  unsigned long t0;
   6194 	  struct elf_link_hash_entry *h;
   6195 	  Elf_Internal_Sym *isym;
   6196 	  struct plt_entry **plist;
   6197 	  unsigned char sym_type;
   6198 
   6199 	  switch (r_type)
   6200 	    {
   6201 	    case R_PPC_REL24:
   6202 	    case R_PPC_LOCAL24PC:
   6203 	    case R_PPC_PLTREL24:
   6204 	    case R_PPC_PLTCALL:
   6205 	      max_branch_offset = 1 << 25;
   6206 	      break;
   6207 
   6208 	    case R_PPC_REL14:
   6209 	    case R_PPC_REL14_BRTAKEN:
   6210 	    case R_PPC_REL14_BRNTAKEN:
   6211 	      max_branch_offset = 1 << 15;
   6212 	      break;
   6213 
   6214 	    case R_PPC_ADDR16_HA:
   6215 	      if (htab->params->pic_fixup > 0)
   6216 		break;
   6217 	      continue;
   6218 
   6219 	    default:
   6220 	      continue;
   6221 	    }
   6222 
   6223 	  /* Get the value of the symbol referred to by the reloc.  */
   6224 	  if (!get_sym_h (&h, &isym, &tsec, NULL, &isymbuf,
   6225 			  ELF32_R_SYM (irel->r_info), abfd))
   6226 	    goto error_return;
   6227 
   6228 	  if (isym != NULL)
   6229 	    {
   6230 	      if (tsec != NULL)
   6231 		;
   6232 	      else if (isym->st_shndx == SHN_ABS)
   6233 		tsec = bfd_abs_section_ptr;
   6234 	      else
   6235 		continue;
   6236 
   6237 	      toff = isym->st_value;
   6238 	      sym_type = ELF_ST_TYPE (isym->st_info);
   6239 	    }
   6240 	  else
   6241 	    {
   6242 	      if (tsec != NULL)
   6243 		toff = h->root.u.def.value;
   6244 	      else if (h->root.type == bfd_link_hash_undefined
   6245 		       || h->root.type == bfd_link_hash_undefweak)
   6246 		{
   6247 		  unsigned long indx;
   6248 
   6249 		  indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
   6250 		  tsec = bfd_und_section_ptr;
   6251 		  toff = bfd_link_relocatable (link_info) ? indx : 0;
   6252 		}
   6253 	      else
   6254 		continue;
   6255 
   6256 	      /* If this branch is to __tls_get_addr then we may later
   6257 		 optimise away the call.  We won't be needing a long-
   6258 		 branch stub in that case.  */
   6259 	      if (bfd_link_executable (link_info)
   6260 		  && h == htab->tls_get_addr
   6261 		  && irel != internal_relocs)
   6262 		{
   6263 		  unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
   6264 		  unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
   6265 		  unsigned int tls_mask = 0;
   6266 
   6267 		  /* The previous reloc should be one of R_PPC_TLSGD or
   6268 		     R_PPC_TLSLD, or for older object files, a reloc
   6269 		     on the __tls_get_addr arg setup insn.  Get tls
   6270 		     mask bits from the symbol on that reloc.  */
   6271 		  if (t_symndx < symtab_hdr->sh_info)
   6272 		    {
   6273 		      bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
   6274 
   6275 		      if (local_got_offsets != NULL)
   6276 			{
   6277 			  struct plt_entry **local_plt = (struct plt_entry **)
   6278 			    (local_got_offsets + symtab_hdr->sh_info);
   6279 			  char *lgot_masks = (char *)
   6280 			    (local_plt + symtab_hdr->sh_info);
   6281 			  tls_mask = lgot_masks[t_symndx];
   6282 			}
   6283 		    }
   6284 		  else
   6285 		    {
   6286 		      struct elf_link_hash_entry *th
   6287 			= elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
   6288 
   6289 		      while (th->root.type == bfd_link_hash_indirect
   6290 			     || th->root.type == bfd_link_hash_warning)
   6291 			th = (struct elf_link_hash_entry *) th->root.u.i.link;
   6292 
   6293 		      tls_mask
   6294 			= ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
   6295 		    }
   6296 
   6297 		  /* The mask bits tell us if the call will be
   6298 		     optimised away.  */
   6299 		  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
   6300 		      && (t_rtype == R_PPC_TLSGD
   6301 			  || t_rtype == R_PPC_GOT_TLSGD16
   6302 			  || t_rtype == R_PPC_GOT_TLSGD16_LO))
   6303 		    continue;
   6304 		  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
   6305 		      && (t_rtype == R_PPC_TLSLD
   6306 			  || t_rtype == R_PPC_GOT_TLSLD16
   6307 			  || t_rtype == R_PPC_GOT_TLSLD16_LO))
   6308 		    continue;
   6309 		}
   6310 
   6311 	      sym_type = h->type;
   6312 	    }
   6313 
   6314 	  if (r_type == R_PPC_ADDR16_HA)
   6315 	    {
   6316 	      if (h != NULL
   6317 		  && !h->def_regular
   6318 		  && h->protected_def
   6319 		  && ppc_elf_hash_entry (h)->has_addr16_ha
   6320 		  && ppc_elf_hash_entry (h)->has_addr16_lo)
   6321 		picfixup_size += 12;
   6322 	      continue;
   6323 	    }
   6324 
   6325 	  /* The condition here under which we call find_plt_ent must
   6326 	     match that in relocate_section.  If we call find_plt_ent here
   6327 	     but not in relocate_section, or vice versa, then the branch
   6328 	     destination used here may be incorrect.  */
   6329 	  plist = NULL;
   6330 	  if (h != NULL)
   6331 	    {
   6332 	      /* We know is_branch_reloc (r_type) is true.  */
   6333 	      if (h->type == STT_GNU_IFUNC
   6334 		  || r_type == R_PPC_PLTREL24)
   6335 		plist = &h->plt.plist;
   6336 	    }
   6337 	  else if (sym_type == STT_GNU_IFUNC
   6338 		   && elf_local_got_offsets (abfd) != NULL)
   6339 	    {
   6340 	      bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
   6341 	      struct plt_entry **local_plt = (struct plt_entry **)
   6342 		(local_got_offsets + symtab_hdr->sh_info);
   6343 	      plist = local_plt + ELF32_R_SYM (irel->r_info);
   6344 	    }
   6345 	  if (plist != NULL)
   6346 	    {
   6347 	      bfd_vma addend = 0;
   6348 	      struct plt_entry *ent;
   6349 
   6350 	      if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
   6351 		addend = irel->r_addend;
   6352 	      ent = find_plt_ent (plist, got2, addend);
   6353 	      if (ent != NULL)
   6354 		{
   6355 		  if (htab->plt_type == PLT_NEW
   6356 		      || h == NULL
   6357 		      || !htab->elf.dynamic_sections_created
   6358 		      || h->dynindx == -1)
   6359 		    {
   6360 		      tsec = htab->glink;
   6361 		      toff = ent->glink_offset;
   6362 		    }
   6363 		  else
   6364 		    {
   6365 		      tsec = htab->elf.splt;
   6366 		      toff = ent->plt.offset;
   6367 		    }
   6368 		}
   6369 	    }
   6370 
   6371 	  /* If the branch and target are in the same section, you have
   6372 	     no hope of adding stubs.  We'll error out later should the
   6373 	     branch overflow.  */
   6374 	  if (tsec == isec)
   6375 	    continue;
   6376 
   6377 	  /* toff is used for the symbol index when the symbol is
   6378 	     undefined and we're doing a relocatable link, so we can't
   6379 	     support addends.  It would be possible to do so by
   6380 	     putting the addend in one_branch_fixup but addends on
   6381 	     branches are rare so it hardly seems worth supporting.  */
   6382 	  if (bfd_link_relocatable (link_info)
   6383 	      && tsec == bfd_und_section_ptr
   6384 	      && r_type != R_PPC_PLTREL24
   6385 	      && irel->r_addend != 0)
   6386 	    continue;
   6387 
   6388 	  /* There probably isn't any reason to handle symbols in
   6389 	     SEC_MERGE sections;  SEC_MERGE doesn't seem a likely
   6390 	     attribute for a code section, and we are only looking at
   6391 	     branches.  However, implement it correctly here as a
   6392 	     reference for other target relax_section functions.  */
   6393 	  if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
   6394 	    {
   6395 	      /* At this stage in linking, no SEC_MERGE symbol has been
   6396 		 adjusted, so all references to such symbols need to be
   6397 		 passed through _bfd_merged_section_offset.  (Later, in
   6398 		 relocate_section, all SEC_MERGE symbols *except* for
   6399 		 section symbols have been adjusted.)
   6400 
   6401 		 gas may reduce relocations against symbols in SEC_MERGE
   6402 		 sections to a relocation against the section symbol when
   6403 		 the original addend was zero.  When the reloc is against
   6404 		 a section symbol we should include the addend in the
   6405 		 offset passed to _bfd_merged_section_offset, since the
   6406 		 location of interest is the original symbol.  On the
   6407 		 other hand, an access to "sym+addend" where "sym" is not
   6408 		 a section symbol should not include the addend;  Such an
   6409 		 access is presumed to be an offset from "sym";  The
   6410 		 location of interest is just "sym".  */
   6411 	      if (sym_type == STT_SECTION
   6412 		  && r_type != R_PPC_PLTREL24)
   6413 		toff += irel->r_addend;
   6414 
   6415 	      toff
   6416 		= _bfd_merged_section_offset (abfd, &tsec,
   6417 					      elf_section_data (tsec)->sec_info,
   6418 					      toff);
   6419 
   6420 	      if (sym_type != STT_SECTION
   6421 		  && r_type != R_PPC_PLTREL24)
   6422 		toff += irel->r_addend;
   6423 	    }
   6424 	  /* PLTREL24 addends are special.  */
   6425 	  else if (r_type != R_PPC_PLTREL24)
   6426 	    toff += irel->r_addend;
   6427 
   6428 	  /* Attempted -shared link of non-pic code loses.  */
   6429 	  if ((!bfd_link_relocatable (link_info)
   6430 	       && tsec == bfd_und_section_ptr)
   6431 	      || tsec->output_section == NULL
   6432 	      || (tsec->owner != NULL
   6433 		  && (tsec->owner->flags & BFD_PLUGIN) != 0))
   6434 	    continue;
   6435 
   6436 	  roff = irel->r_offset;
   6437 
   6438 	  /* Avoid creating a lot of unnecessary fixups when
   6439 	     relocatable if the output section size is such that a
   6440 	     fixup can be created at final link.
   6441 	     The max_branch_offset adjustment allows for some number
   6442 	     of other fixups being needed at final link.  */
   6443 	  if (bfd_link_relocatable (link_info)
   6444 	      && (isec->output_section->rawsize - (isec->output_offset + roff)
   6445 		  < max_branch_offset - (max_branch_offset >> 4)))
   6446 	    continue;
   6447 
   6448 	  /* If the branch is in range, no need to do anything.  */
   6449 	  if (tsec != bfd_und_section_ptr
   6450 	      && (!bfd_link_relocatable (link_info)
   6451 		  /* A relocatable link may have sections moved during
   6452 		     final link, so do not presume they remain in range.  */
   6453 		  || tsec->output_section == isec->output_section))
   6454 	    {
   6455 	      bfd_vma symaddr, reladdr;
   6456 
   6457 	      symaddr = tsec->output_section->vma + tsec->output_offset + toff;
   6458 	      reladdr = isec->output_section->vma + isec->output_offset + roff;
   6459 	      if (symaddr - reladdr + max_branch_offset
   6460 		  < 2 * max_branch_offset)
   6461 		continue;
   6462 	    }
   6463 
   6464 	  /* Look for an existing fixup to this address.  */
   6465 	  for (f = branch_fixups; f ; f = f->next)
   6466 	    if (f->tsec == tsec && f->toff == toff)
   6467 	      break;
   6468 
   6469 	  if (f == NULL)
   6470 	    {
   6471 	      size_t size;
   6472 	      unsigned long stub_rtype;
   6473 
   6474 	      val = trampoff - roff;
   6475 	      if (val >= max_branch_offset)
   6476 		/* Oh dear, we can't reach a trampoline.  Don't try to add
   6477 		   one.  We'll report an error later.  */
   6478 		continue;
   6479 
   6480 	      if (bfd_link_pic (link_info))
   6481 		{
   6482 		  size = 4 * ARRAY_SIZE (shared_stub_entry);
   6483 		  insn_offset = 12;
   6484 		}
   6485 	      else
   6486 		{
   6487 		  size = 4 * ARRAY_SIZE (stub_entry);
   6488 		  insn_offset = 0;
   6489 		}
   6490 	      stub_rtype = R_PPC_RELAX;
   6491 	      if (tsec == htab->elf.splt
   6492 		  || tsec == htab->glink)
   6493 		{
   6494 		  stub_rtype = R_PPC_RELAX_PLT;
   6495 		  if (r_type == R_PPC_PLTREL24)
   6496 		    stub_rtype = R_PPC_RELAX_PLTREL24;
   6497 		}
   6498 
   6499 	      /* Hijack the old relocation.  Since we need two
   6500 		 relocations for this use a "composite" reloc.  */
   6501 	      irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
   6502 					   stub_rtype);
   6503 	      irel->r_offset = trampoff + insn_offset;
   6504 	      if (r_type == R_PPC_PLTREL24
   6505 		  && stub_rtype != R_PPC_RELAX_PLTREL24)
   6506 		irel->r_addend = 0;
   6507 
   6508 	      /* Record the fixup so we don't do it again this section.  */
   6509 	      f = bfd_malloc (sizeof (*f));
   6510 	      f->next = branch_fixups;
   6511 	      f->tsec = tsec;
   6512 	      f->toff = toff;
   6513 	      f->trampoff = trampoff;
   6514 	      branch_fixups = f;
   6515 
   6516 	      trampoff += size;
   6517 	      changes++;
   6518 	    }
   6519 	  else
   6520 	    {
   6521 	      val = f->trampoff - roff;
   6522 	      if (val >= max_branch_offset)
   6523 		continue;
   6524 
   6525 	      /* Nop out the reloc, since we're finalizing things here.  */
   6526 	      irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
   6527 	    }
   6528 
   6529 	  /* Get the section contents.  */
   6530 	  if (contents == NULL)
   6531 	    {
   6532 	      /* Get cached copy if it exists.  */
   6533 	      if (elf_section_data (isec)->this_hdr.contents != NULL)
   6534 		contents = elf_section_data (isec)->this_hdr.contents;
   6535 	      /* Go get them off disk.  */
   6536 	      else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
   6537 		goto error_return;
   6538 	    }
   6539 
   6540 	  /* Fix up the existing branch to hit the trampoline.  */
   6541 	  hit_addr = contents + roff;
   6542 	  switch (r_type)
   6543 	    {
   6544 	    case R_PPC_REL24:
   6545 	    case R_PPC_LOCAL24PC:
   6546 	    case R_PPC_PLTREL24:
   6547 	      t0 = bfd_get_32 (abfd, hit_addr);
   6548 	      t0 &= ~0x3fffffc;
   6549 	      t0 |= val & 0x3fffffc;
   6550 	      bfd_put_32 (abfd, t0, hit_addr);
   6551 	      break;
   6552 
   6553 	    case R_PPC_REL14:
   6554 	    case R_PPC_REL14_BRTAKEN:
   6555 	    case R_PPC_REL14_BRNTAKEN:
   6556 	      t0 = bfd_get_32 (abfd, hit_addr);
   6557 	      t0 &= ~0xfffc;
   6558 	      t0 |= val & 0xfffc;
   6559 	      bfd_put_32 (abfd, t0, hit_addr);
   6560 	      break;
   6561 	    }
   6562 	}
   6563 
   6564       while (branch_fixups != NULL)
   6565 	{
   6566 	  struct one_branch_fixup *f = branch_fixups;
   6567 	  branch_fixups = branch_fixups->next;
   6568 	  free (f);
   6569 	}
   6570     }
   6571 
   6572   workaround_change = FALSE;
   6573   newsize = trampoff;
   6574   if (htab->params->ppc476_workaround
   6575       && (!bfd_link_relocatable (link_info)
   6576 	  || isec->output_section->alignment_power >= htab->params->pagesize_p2))
   6577     {
   6578       bfd_vma addr, end_addr;
   6579       unsigned int crossings;
   6580       bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   6581 
   6582       addr = isec->output_section->vma + isec->output_offset;
   6583       end_addr = addr + trampoff;
   6584       addr &= -pagesize;
   6585       crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
   6586       if (crossings != 0)
   6587 	{
   6588 	  /* Keep space aligned, to ensure the patch code itself does
   6589 	     not cross a page.  Don't decrease size calculated on a
   6590 	     previous pass as otherwise we might never settle on a layout.  */
   6591 	  newsize = 15 - ((end_addr - 1) & 15);
   6592 	  newsize += crossings * 16;
   6593 	  if (relax_info->workaround_size < newsize)
   6594 	    {
   6595 	      relax_info->workaround_size = newsize;
   6596 	      workaround_change = TRUE;
   6597 	    }
   6598 	  /* Ensure relocate_section is called.  */
   6599 	  isec->flags |= SEC_RELOC;
   6600 	}
   6601       newsize = trampoff + relax_info->workaround_size;
   6602     }
   6603 
   6604   if (htab->params->pic_fixup > 0)
   6605     {
   6606       picfixup_size -= relax_info->picfixup_size;
   6607       if (picfixup_size != 0)
   6608 	relax_info->picfixup_size += picfixup_size;
   6609       newsize += relax_info->picfixup_size;
   6610     }
   6611 
   6612   if (changes != 0 || picfixup_size != 0 || workaround_change)
   6613     isec->size = newsize;
   6614 
   6615   if (isymbuf != NULL
   6616       && symtab_hdr->contents != (unsigned char *) isymbuf)
   6617     {
   6618       if (! link_info->keep_memory)
   6619 	free (isymbuf);
   6620       else
   6621 	{
   6622 	  /* Cache the symbols for elf_link_input_bfd.  */
   6623 	  symtab_hdr->contents = (unsigned char *) isymbuf;
   6624 	}
   6625     }
   6626 
   6627   if (contents != NULL
   6628       && elf_section_data (isec)->this_hdr.contents != contents)
   6629     {
   6630       if (!changes && !link_info->keep_memory)
   6631 	free (contents);
   6632       else
   6633 	{
   6634 	  /* Cache the section contents for elf_link_input_bfd.  */
   6635 	  elf_section_data (isec)->this_hdr.contents = contents;
   6636 	}
   6637     }
   6638 
   6639   changes += picfixup_size;
   6640   if (changes != 0)
   6641     {
   6642       /* Append sufficient NOP relocs so we can write out relocation
   6643 	 information for the trampolines.  */
   6644       Elf_Internal_Shdr *rel_hdr;
   6645       Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
   6646 						  * sizeof (*new_relocs));
   6647       unsigned ix;
   6648 
   6649       if (!new_relocs)
   6650 	goto error_return;
   6651       memcpy (new_relocs, internal_relocs,
   6652 	      isec->reloc_count * sizeof (*new_relocs));
   6653       for (ix = changes; ix--;)
   6654 	{
   6655 	  irel = new_relocs + ix + isec->reloc_count;
   6656 
   6657 	  irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
   6658 	}
   6659       if (internal_relocs != elf_section_data (isec)->relocs)
   6660 	free (internal_relocs);
   6661       elf_section_data (isec)->relocs = new_relocs;
   6662       isec->reloc_count += changes;
   6663       rel_hdr = _bfd_elf_single_rel_hdr (isec);
   6664       rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
   6665     }
   6666   else if (internal_relocs != NULL
   6667 	   && elf_section_data (isec)->relocs != internal_relocs)
   6668     free (internal_relocs);
   6669 
   6670   *again = changes != 0 || workaround_change;
   6671   return TRUE;
   6672 
   6673  error_return:
   6674   while (branch_fixups != NULL)
   6675     {
   6676       struct one_branch_fixup *f = branch_fixups;
   6677       branch_fixups = branch_fixups->next;
   6678       free (f);
   6679     }
   6680   if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
   6681     free (isymbuf);
   6682   if (contents != NULL
   6683       && elf_section_data (isec)->this_hdr.contents != contents)
   6684     free (contents);
   6685   if (internal_relocs != NULL
   6686       && elf_section_data (isec)->relocs != internal_relocs)
   6687     free (internal_relocs);
   6688   return FALSE;
   6689 }
   6690 
   6691 /* What to do when ld finds relocations against symbols defined in
   6693    discarded sections.  */
   6694 
   6695 static unsigned int
   6696 ppc_elf_action_discarded (asection *sec)
   6697 {
   6698   if (strcmp (".fixup", sec->name) == 0)
   6699     return 0;
   6700 
   6701   if (strcmp (".got2", sec->name) == 0)
   6702     return 0;
   6703 
   6704   return _bfd_elf_default_action_discarded (sec);
   6705 }
   6706 
   6707 /* Fill in the address for a pointer generated in a linker section.  */
   6709 
   6710 static bfd_vma
   6711 elf_finish_pointer_linker_section (bfd *input_bfd,
   6712 				   elf_linker_section_t *lsect,
   6713 				   struct elf_link_hash_entry *h,
   6714 				   bfd_vma relocation,
   6715 				   const Elf_Internal_Rela *rel)
   6716 {
   6717   elf_linker_section_pointers_t *linker_section_ptr;
   6718 
   6719   BFD_ASSERT (lsect != NULL);
   6720 
   6721   if (h != NULL)
   6722     {
   6723       /* Handle global symbol.  */
   6724       struct ppc_elf_link_hash_entry *eh;
   6725 
   6726       eh = (struct ppc_elf_link_hash_entry *) h;
   6727       BFD_ASSERT (eh->elf.def_regular);
   6728       linker_section_ptr = eh->linker_section_pointer;
   6729     }
   6730   else
   6731     {
   6732       /* Handle local symbol.  */
   6733       unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
   6734 
   6735       BFD_ASSERT (is_ppc_elf (input_bfd));
   6736       BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
   6737       linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
   6738     }
   6739 
   6740   linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
   6741 							rel->r_addend,
   6742 							lsect);
   6743   BFD_ASSERT (linker_section_ptr != NULL);
   6744 
   6745   /* Offset will always be a multiple of four, so use the bottom bit
   6746      as a "written" flag.  */
   6747   if ((linker_section_ptr->offset & 1) == 0)
   6748     {
   6749       bfd_put_32 (lsect->section->owner,
   6750 		  relocation + linker_section_ptr->addend,
   6751 		  lsect->section->contents + linker_section_ptr->offset);
   6752       linker_section_ptr->offset += 1;
   6753     }
   6754 
   6755   relocation = (lsect->section->output_section->vma
   6756 		+ lsect->section->output_offset
   6757 		+ linker_section_ptr->offset - 1
   6758 		- SYM_VAL (lsect->sym));
   6759 
   6760 #ifdef DEBUG
   6761   fprintf (stderr,
   6762 	   "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
   6763 	   lsect->name, (long) relocation, (long) relocation);
   6764 #endif
   6765 
   6766   return relocation;
   6767 }
   6768 
   6769 #define PPC_LO(v) ((v) & 0xffff)
   6770 #define PPC_HI(v) (((v) >> 16) & 0xffff)
   6771 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
   6772 
   6773 static void
   6774 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
   6775 		  asection *plt_sec, unsigned char *p,
   6776 		  struct bfd_link_info *info)
   6777 {
   6778   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   6779   bfd *output_bfd = info->output_bfd;
   6780   bfd_vma plt;
   6781   unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
   6782 
   6783   if (h != NULL
   6784       && h == htab->tls_get_addr
   6785       && !htab->params->no_tls_get_addr_opt)
   6786     {
   6787       bfd_put_32 (output_bfd, LWZ_11_3, p);
   6788       p += 4;
   6789       bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
   6790       p += 4;
   6791       bfd_put_32 (output_bfd, MR_0_3, p);
   6792       p += 4;
   6793       bfd_put_32 (output_bfd, CMPWI_11_0, p);
   6794       p += 4;
   6795       bfd_put_32 (output_bfd, ADD_3_12_2, p);
   6796       p += 4;
   6797       bfd_put_32 (output_bfd, BEQLR, p);
   6798       p += 4;
   6799       bfd_put_32 (output_bfd, MR_3_0, p);
   6800       p += 4;
   6801       bfd_put_32 (output_bfd, NOP, p);
   6802       p += 4;
   6803     }
   6804 
   6805   plt = ((ent->plt.offset & ~1)
   6806 	 + plt_sec->output_section->vma
   6807 	 + plt_sec->output_offset);
   6808 
   6809   if (bfd_link_pic (info))
   6810     {
   6811       bfd_vma got = 0;
   6812 
   6813       if (ent->addend >= 32768)
   6814 	got = (ent->addend
   6815 	       + ent->sec->output_section->vma
   6816 	       + ent->sec->output_offset);
   6817       else if (htab->elf.hgot != NULL)
   6818 	got = SYM_VAL (htab->elf.hgot);
   6819 
   6820       plt -= got;
   6821 
   6822       if (plt + 0x8000 < 0x10000)
   6823 	bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
   6824       else
   6825 	{
   6826 	  bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
   6827 	  p += 4;
   6828 	  bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
   6829 	}
   6830     }
   6831   else
   6832     {
   6833       bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
   6834       p += 4;
   6835       bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
   6836     }
   6837   p += 4;
   6838   bfd_put_32 (output_bfd, MTCTR_11, p);
   6839   p += 4;
   6840   bfd_put_32 (output_bfd, BCTR, p);
   6841   p += 4;
   6842   while (p < end)
   6843     {
   6844       bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
   6845       p += 4;
   6846     }
   6847 }
   6848 
   6849 /* Return true if symbol is defined statically.  */
   6850 
   6851 static bfd_boolean
   6852 is_static_defined (struct elf_link_hash_entry *h)
   6853 {
   6854   return ((h->root.type == bfd_link_hash_defined
   6855 	   || h->root.type == bfd_link_hash_defweak)
   6856 	  && h->root.u.def.section != NULL
   6857 	  && h->root.u.def.section->output_section != NULL);
   6858 }
   6859 
   6860 /* If INSN is an opcode that may be used with an @tls operand, return
   6861    the transformed insn for TLS optimisation, otherwise return 0.  If
   6862    REG is non-zero only match an insn with RB or RA equal to REG.  */
   6863 
   6864 unsigned int
   6865 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
   6866 {
   6867   unsigned int rtra;
   6868 
   6869   if ((insn & (0x3fu << 26)) != 31 << 26)
   6870     return 0;
   6871 
   6872   if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
   6873     rtra = insn & ((1 << 26) - (1 << 16));
   6874   else if (((insn >> 16) & 0x1f) == reg)
   6875     rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
   6876   else
   6877     return 0;
   6878 
   6879   if ((insn & (0x3ff << 1)) == 266 << 1)
   6880     /* add -> addi.  */
   6881     insn = 14 << 26;
   6882   else if ((insn & (0x1f << 1)) == 23 << 1
   6883 	   && ((insn & (0x1f << 6)) < 14 << 6
   6884 	       || ((insn & (0x1f << 6)) >= 16 << 6
   6885 		   && (insn & (0x1f << 6)) < 24 << 6)))
   6886     /* load and store indexed -> dform.  */
   6887     insn = (32u | ((insn >> 6) & 0x1f)) << 26;
   6888   else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
   6889     /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu.  */
   6890     insn = ((58u | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
   6891   else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
   6892     /* lwax -> lwa.  */
   6893     insn = (58u << 26) | 2;
   6894   else
   6895     return 0;
   6896   insn |= rtra;
   6897   return insn;
   6898 }
   6899 
   6900 /* If INSN is an opcode that may be used with an @tprel operand, return
   6901    the transformed insn for an undefined weak symbol, ie. with the
   6902    thread pointer REG operand removed.  Otherwise return 0.  */
   6903 
   6904 unsigned int
   6905 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
   6906 {
   6907   if ((insn & (0x1f << 16)) == reg << 16
   6908       && ((insn & (0x3fu << 26)) == 14u << 26 /* addi */
   6909 	  || (insn & (0x3fu << 26)) == 15u << 26 /* addis */
   6910 	  || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */
   6911 	  || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */
   6912 	  || (insn & (0x3fu << 26)) == 36u << 26 /* stw */
   6913 	  || (insn & (0x3fu << 26)) == 38u << 26 /* stb */
   6914 	  || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */
   6915 	  || (insn & (0x3fu << 26)) == 42u << 26 /* lha */
   6916 	  || (insn & (0x3fu << 26)) == 44u << 26 /* sth */
   6917 	  || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */
   6918 	  || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */
   6919 	  || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */
   6920 	  || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */
   6921 	  || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */
   6922 	  || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */
   6923 	  || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */
   6924 	      && (insn & 3) != 1)
   6925 	  || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */
   6926 	      && ((insn & 3) == 0 || (insn & 3) == 3))))
   6927     {
   6928       insn &= ~(0x1f << 16);
   6929     }
   6930   else if ((insn & (0x1f << 21)) == reg << 21
   6931 	   && ((insn & (0x3eu << 26)) == 24u << 26 /* ori, oris */
   6932 	       || (insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */
   6933 	       || (insn & (0x3eu << 26)) == 28u << 26 /* andi,andis */))
   6934     {
   6935       insn &= ~(0x1f << 21);
   6936       insn |= (insn & (0x1f << 16)) << 5;
   6937       if ((insn & (0x3eu << 26)) == 26u << 26 /* xori,xoris */)
   6938 	insn -= 2 >> 26;  /* convert to ori,oris */
   6939     }
   6940   else
   6941     insn = 0;
   6942   return insn;
   6943 }
   6944 
   6945 static bfd_boolean
   6946 is_insn_ds_form (unsigned int insn)
   6947 {
   6948   return ((insn & (0x3fu << 26)) == 58u << 26 /* ld,ldu,lwa */
   6949 	  || (insn & (0x3fu << 26)) == 62u << 26 /* std,stdu,stq */
   6950 	  || (insn & (0x3fu << 26)) == 57u << 26 /* lfdp */
   6951 	  || (insn & (0x3fu << 26)) == 61u << 26 /* stfdp */);
   6952 }
   6953 
   6954 static bfd_boolean
   6955 is_insn_dq_form (unsigned int insn)
   6956 {
   6957   return ((insn & (0x3fu << 26)) == 56u << 26 /* lq */
   6958 	  || ((insn & (0x3fu << 26)) == (61u << 26) /* lxv, stxv */
   6959 	      && (insn & 3) == 1));
   6960 }
   6961 
   6962 /* The RELOCATE_SECTION function is called by the ELF backend linker
   6963    to handle the relocations for a section.
   6964 
   6965    The relocs are always passed as Rela structures; if the section
   6966    actually uses Rel structures, the r_addend field will always be
   6967    zero.
   6968 
   6969    This function is responsible for adjust the section contents as
   6970    necessary, and (if using Rela relocs and generating a
   6971    relocatable output file) adjusting the reloc addend as
   6972    necessary.
   6973 
   6974    This function does not have to worry about setting the reloc
   6975    address or the reloc symbol index.
   6976 
   6977    LOCAL_SYMS is a pointer to the swapped in local symbols.
   6978 
   6979    LOCAL_SECTIONS is an array giving the section in the input file
   6980    corresponding to the st_shndx field of each local symbol.
   6981 
   6982    The global hash table entry for the global symbols can be found
   6983    via elf_sym_hashes (input_bfd).
   6984 
   6985    When generating relocatable output, this function must handle
   6986    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
   6987    going to be the section symbol corresponding to the output
   6988    section, which means that the addend must be adjusted
   6989    accordingly.  */
   6990 
   6991 static bfd_boolean
   6992 ppc_elf_relocate_section (bfd *output_bfd,
   6993 			  struct bfd_link_info *info,
   6994 			  bfd *input_bfd,
   6995 			  asection *input_section,
   6996 			  bfd_byte *contents,
   6997 			  Elf_Internal_Rela *relocs,
   6998 			  Elf_Internal_Sym *local_syms,
   6999 			  asection **local_sections)
   7000 {
   7001   Elf_Internal_Shdr *symtab_hdr;
   7002   struct elf_link_hash_entry **sym_hashes;
   7003   struct ppc_elf_link_hash_table *htab;
   7004   Elf_Internal_Rela *rel;
   7005   Elf_Internal_Rela *wrel;
   7006   Elf_Internal_Rela *relend;
   7007   Elf_Internal_Rela outrel;
   7008   asection *got2;
   7009   bfd_vma *local_got_offsets;
   7010   bfd_boolean ret = TRUE;
   7011   bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
   7012   bfd_boolean is_vxworks_tls;
   7013   unsigned int picfixup_size = 0;
   7014   struct ppc_elf_relax_info *relax_info = NULL;
   7015 
   7016 #ifdef DEBUG
   7017   _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
   7018 		      "%ld relocations%s",
   7019 		      input_bfd, input_section,
   7020 		      (long) input_section->reloc_count,
   7021 		      (bfd_link_relocatable (info)) ? " (relocatable)" : "");
   7022 #endif
   7023 
   7024   if (!is_ppc_elf (input_bfd))
   7025     {
   7026       bfd_set_error (bfd_error_wrong_format);
   7027       return FALSE;
   7028     }
   7029 
   7030   got2 = bfd_get_section_by_name (input_bfd, ".got2");
   7031 
   7032   /* Initialize howto table if not already done.  */
   7033   if (!ppc_elf_howto_table[R_PPC_ADDR32])
   7034     ppc_elf_howto_init ();
   7035 
   7036   htab = ppc_elf_hash_table (info);
   7037   local_got_offsets = elf_local_got_offsets (input_bfd);
   7038   symtab_hdr = &elf_symtab_hdr (input_bfd);
   7039   sym_hashes = elf_sym_hashes (input_bfd);
   7040   /* We have to handle relocations in vxworks .tls_vars sections
   7041      specially, because the dynamic loader is 'weird'.  */
   7042   is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
   7043 		    && !strcmp (input_section->output_section->name,
   7044 				".tls_vars"));
   7045   if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
   7046     relax_info = elf_section_data (input_section)->sec_info;
   7047   rel = wrel = relocs;
   7048   relend = relocs + input_section->reloc_count;
   7049   for (; rel < relend; wrel++, rel++)
   7050     {
   7051       enum elf_ppc_reloc_type r_type;
   7052       bfd_vma addend;
   7053       bfd_reloc_status_type r;
   7054       Elf_Internal_Sym *sym;
   7055       asection *sec;
   7056       struct elf_link_hash_entry *h;
   7057       const char *sym_name;
   7058       reloc_howto_type *howto;
   7059       unsigned long r_symndx;
   7060       bfd_vma relocation;
   7061       bfd_vma branch_bit, from;
   7062       bfd_boolean unresolved_reloc, save_unresolved_reloc;
   7063       bfd_boolean warned;
   7064       unsigned int tls_type, tls_mask, tls_gd;
   7065       struct plt_entry **ifunc, **plt_list;
   7066       struct reloc_howto_struct alt_howto;
   7067 
   7068     again:
   7069       r_type = ELF32_R_TYPE (rel->r_info);
   7070       sym = NULL;
   7071       sec = NULL;
   7072       h = NULL;
   7073       unresolved_reloc = FALSE;
   7074       warned = FALSE;
   7075       r_symndx = ELF32_R_SYM (rel->r_info);
   7076 
   7077       if (r_symndx < symtab_hdr->sh_info)
   7078 	{
   7079 	  sym = local_syms + r_symndx;
   7080 	  sec = local_sections[r_symndx];
   7081 	  sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
   7082 
   7083 	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
   7084 	}
   7085       else
   7086 	{
   7087 	  bfd_boolean ignored;
   7088 
   7089 	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
   7090 				   r_symndx, symtab_hdr, sym_hashes,
   7091 				   h, sec, relocation,
   7092 				   unresolved_reloc, warned, ignored);
   7093 
   7094 	  sym_name = h->root.root.string;
   7095 	}
   7096 
   7097       if (sec != NULL && discarded_section (sec))
   7098 	{
   7099 	  /* For relocs against symbols from removed linkonce sections,
   7100 	     or sections discarded by a linker script, we just want the
   7101 	     section contents zeroed.  Avoid any special processing.  */
   7102 	  howto = NULL;
   7103 	  if (r_type < R_PPC_max)
   7104 	    howto = ppc_elf_howto_table[r_type];
   7105 
   7106 	  _bfd_clear_contents (howto, input_bfd, input_section,
   7107 			       contents, rel->r_offset);
   7108 	  wrel->r_offset = rel->r_offset;
   7109 	  wrel->r_info = 0;
   7110 	  wrel->r_addend = 0;
   7111 
   7112 	  /* For ld -r, remove relocations in debug sections against
   7113 	     symbols defined in discarded sections.  Not done for
   7114 	     non-debug to preserve relocs in .eh_frame which the
   7115 	     eh_frame editing code expects to be present.  */
   7116 	  if (bfd_link_relocatable (info)
   7117 	      && (input_section->flags & SEC_DEBUGGING))
   7118 	    wrel--;
   7119 
   7120 	  continue;
   7121 	}
   7122 
   7123       if (bfd_link_relocatable (info))
   7124 	{
   7125 	  if (got2 != NULL
   7126 	      && r_type == R_PPC_PLTREL24
   7127 	      && rel->r_addend != 0)
   7128 	    {
   7129 	      /* R_PPC_PLTREL24 is rather special.  If non-zero, the
   7130 		 addend specifies the GOT pointer offset within .got2.  */
   7131 	      rel->r_addend += got2->output_offset;
   7132 	    }
   7133 	  if (r_type != R_PPC_RELAX_PLT
   7134 	      && r_type != R_PPC_RELAX_PLTREL24
   7135 	      && r_type != R_PPC_RELAX)
   7136 	    goto copy_reloc;
   7137 	}
   7138 
   7139       /* TLS optimizations.  Replace instruction sequences and relocs
   7140 	 based on information we collected in tls_optimize.  We edit
   7141 	 RELOCS so that --emit-relocs will output something sensible
   7142 	 for the final instruction stream.  */
   7143       tls_mask = 0;
   7144       tls_gd = 0;
   7145       if (h != NULL)
   7146 	tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
   7147       else if (local_got_offsets != NULL)
   7148 	{
   7149 	  struct plt_entry **local_plt;
   7150 	  char *lgot_masks;
   7151 	  local_plt
   7152 	    = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
   7153 	  lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
   7154 	  tls_mask = lgot_masks[r_symndx];
   7155 	}
   7156 
   7157       /* Ensure reloc mapping code below stays sane.  */
   7158       if ((R_PPC_GOT_TLSLD16 & 3)    != (R_PPC_GOT_TLSGD16 & 3)
   7159 	  || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
   7160 	  || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
   7161 	  || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
   7162 	  || (R_PPC_GOT_TLSLD16 & 3)    != (R_PPC_GOT_TPREL16 & 3)
   7163 	  || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
   7164 	  || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
   7165 	  || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
   7166 	abort ();
   7167       switch (r_type)
   7168 	{
   7169 	default:
   7170 	  break;
   7171 
   7172 	case R_PPC_GOT_TPREL16:
   7173 	case R_PPC_GOT_TPREL16_LO:
   7174 	  if ((tls_mask & TLS_TLS) != 0
   7175 	      && (tls_mask & TLS_TPREL) == 0)
   7176 	    {
   7177 	      bfd_vma insn;
   7178 
   7179 	      insn = bfd_get_32 (input_bfd,
   7180 				 contents + rel->r_offset - d_offset);
   7181 	      insn &= 31 << 21;
   7182 	      insn |= 0x3c020000;	/* addis 0,2,0 */
   7183 	      bfd_put_32 (input_bfd, insn,
   7184 			  contents + rel->r_offset - d_offset);
   7185 	      r_type = R_PPC_TPREL16_HA;
   7186 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7187 	    }
   7188 	  break;
   7189 
   7190 	case R_PPC_TLS:
   7191 	  if ((tls_mask & TLS_TLS) != 0
   7192 	      && (tls_mask & TLS_TPREL) == 0)
   7193 	    {
   7194 	      bfd_vma insn;
   7195 
   7196 	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   7197 	      insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
   7198 	      if (insn == 0)
   7199 		abort ();
   7200 	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   7201 	      r_type = R_PPC_TPREL16_LO;
   7202 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7203 
   7204 	      /* Was PPC_TLS which sits on insn boundary, now
   7205 		 PPC_TPREL16_LO which is at low-order half-word.  */
   7206 	      rel->r_offset += d_offset;
   7207 	    }
   7208 	  break;
   7209 
   7210 	case R_PPC_GOT_TLSGD16_HI:
   7211 	case R_PPC_GOT_TLSGD16_HA:
   7212 	  tls_gd = TLS_GDIE;
   7213 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
   7214 	    goto tls_gdld_hi;
   7215 	  break;
   7216 
   7217 	case R_PPC_GOT_TLSLD16_HI:
   7218 	case R_PPC_GOT_TLSLD16_HA:
   7219 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
   7220 	    {
   7221 	    tls_gdld_hi:
   7222 	      if ((tls_mask & tls_gd) != 0)
   7223 		r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
   7224 			  + R_PPC_GOT_TPREL16);
   7225 	      else
   7226 		{
   7227 		  rel->r_offset -= d_offset;
   7228 		  bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
   7229 		  r_type = R_PPC_NONE;
   7230 		}
   7231 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7232 	    }
   7233 	  break;
   7234 
   7235 	case R_PPC_GOT_TLSGD16:
   7236 	case R_PPC_GOT_TLSGD16_LO:
   7237 	  tls_gd = TLS_GDIE;
   7238 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
   7239 	    goto tls_ldgd_opt;
   7240 	  break;
   7241 
   7242 	case R_PPC_GOT_TLSLD16:
   7243 	case R_PPC_GOT_TLSLD16_LO:
   7244 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
   7245 	    {
   7246 	      unsigned int insn1, insn2;
   7247 	      bfd_vma offset;
   7248 
   7249 	    tls_ldgd_opt:
   7250 	      offset = (bfd_vma) -1;
   7251 	      /* If not using the newer R_PPC_TLSGD/LD to mark
   7252 		 __tls_get_addr calls, we must trust that the call
   7253 		 stays with its arg setup insns, ie. that the next
   7254 		 reloc is the __tls_get_addr call associated with
   7255 		 the current reloc.  Edit both insns.  */
   7256 	      if (input_section->nomark_tls_get_addr
   7257 		  && rel + 1 < relend
   7258 		  && branch_reloc_hash_match (input_bfd, rel + 1,
   7259 					      htab->tls_get_addr))
   7260 		offset = rel[1].r_offset;
   7261 	      /* We read the low GOT_TLS insn because we need to keep
   7262 		 the destination reg.  It may be something other than
   7263 		 the usual r3, and moved to r3 before the call by
   7264 		 intervening code.  */
   7265 	      insn1 = bfd_get_32 (input_bfd,
   7266 				  contents + rel->r_offset - d_offset);
   7267 	      if ((tls_mask & tls_gd) != 0)
   7268 		{
   7269 		  /* IE */
   7270 		  insn1 &= (0x1f << 21) | (0x1f << 16);
   7271 		  insn1 |= 32u << 26;	/* lwz */
   7272 		  if (offset != (bfd_vma) -1)
   7273 		    {
   7274 		      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7275 		      insn2 = 0x7c631214;	/* add 3,3,2 */
   7276 		      bfd_put_32 (input_bfd, insn2, contents + offset);
   7277 		    }
   7278 		  r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
   7279 			    + R_PPC_GOT_TPREL16);
   7280 		  rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7281 		}
   7282 	      else
   7283 		{
   7284 		  /* LE */
   7285 		  insn1 &= 0x1f << 21;
   7286 		  insn1 |= 0x3c020000;	/* addis r,2,0 */
   7287 		  if (tls_gd == 0)
   7288 		    {
   7289 		      /* Was an LD reloc.  */
   7290 		      for (r_symndx = 0;
   7291 			   r_symndx < symtab_hdr->sh_info;
   7292 			   r_symndx++)
   7293 			if (local_sections[r_symndx] == sec)
   7294 			  break;
   7295 		      if (r_symndx >= symtab_hdr->sh_info)
   7296 			r_symndx = STN_UNDEF;
   7297 		      rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
   7298 		      if (r_symndx != STN_UNDEF)
   7299 			rel->r_addend -= (local_syms[r_symndx].st_value
   7300 					  + sec->output_offset
   7301 					  + sec->output_section->vma);
   7302 		    }
   7303 		  r_type = R_PPC_TPREL16_HA;
   7304 		  rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7305 		  if (offset != (bfd_vma) -1)
   7306 		    {
   7307 		      rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
   7308 		      rel[1].r_offset = offset + d_offset;
   7309 		      rel[1].r_addend = rel->r_addend;
   7310 		      insn2 = 0x38630000;	/* addi 3,3,0 */
   7311 		      bfd_put_32 (input_bfd, insn2, contents + offset);
   7312 		    }
   7313 		}
   7314 	      bfd_put_32 (input_bfd, insn1,
   7315 			  contents + rel->r_offset - d_offset);
   7316 	      if (tls_gd == 0)
   7317 		{
   7318 		  /* We changed the symbol on an LD reloc.  Start over
   7319 		     in order to get h, sym, sec etc. right.  */
   7320 		  goto again;
   7321 		}
   7322 	    }
   7323 	  break;
   7324 
   7325 	case R_PPC_TLSGD:
   7326 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
   7327 	      && rel + 1 < relend)
   7328 	    {
   7329 	      unsigned int insn2;
   7330 	      bfd_vma offset = rel->r_offset;
   7331 
   7332 	      if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   7333 		{
   7334 		  bfd_put_32 (input_bfd, NOP, contents + offset);
   7335 		  rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7336 		  break;
   7337 		}
   7338 
   7339 	      if ((tls_mask & TLS_GDIE) != 0)
   7340 		{
   7341 		  /* IE */
   7342 		  r_type = R_PPC_NONE;
   7343 		  insn2 = 0x7c631214;	/* add 3,3,2 */
   7344 		}
   7345 	      else
   7346 		{
   7347 		  /* LE */
   7348 		  r_type = R_PPC_TPREL16_LO;
   7349 		  rel->r_offset += d_offset;
   7350 		  insn2 = 0x38630000;	/* addi 3,3,0 */
   7351 		}
   7352 	      rel->r_info = ELF32_R_INFO (r_symndx, r_type);
   7353 	      bfd_put_32 (input_bfd, insn2, contents + offset);
   7354 	      /* Zap the reloc on the _tls_get_addr call too.  */
   7355 	      BFD_ASSERT (offset == rel[1].r_offset);
   7356 	      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7357 	    }
   7358 	  break;
   7359 
   7360 	case R_PPC_TLSLD:
   7361 	  if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
   7362 	      && rel + 1 < relend)
   7363 	    {
   7364 	      unsigned int insn2;
   7365 
   7366 	      if (is_plt_seq_reloc (ELF32_R_TYPE (rel[1].r_info)))
   7367 		{
   7368 		  bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
   7369 		  rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7370 		  break;
   7371 		}
   7372 
   7373 	      for (r_symndx = 0;
   7374 		   r_symndx < symtab_hdr->sh_info;
   7375 		   r_symndx++)
   7376 		if (local_sections[r_symndx] == sec)
   7377 		  break;
   7378 	      if (r_symndx >= symtab_hdr->sh_info)
   7379 		r_symndx = STN_UNDEF;
   7380 	      rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
   7381 	      if (r_symndx != STN_UNDEF)
   7382 		rel->r_addend -= (local_syms[r_symndx].st_value
   7383 				  + sec->output_offset
   7384 				  + sec->output_section->vma);
   7385 
   7386 	      rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
   7387 	      rel->r_offset += d_offset;
   7388 	      insn2 = 0x38630000;	/* addi 3,3,0 */
   7389 	      bfd_put_32 (input_bfd, insn2,
   7390 			  contents + rel->r_offset - d_offset);
   7391 	      /* Zap the reloc on the _tls_get_addr call too.  */
   7392 	      BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
   7393 	      rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
   7394 	      goto again;
   7395 	    }
   7396 	  break;
   7397 	}
   7398 
   7399       /* Handle other relocations that tweak non-addend part of insn.  */
   7400       branch_bit = 0;
   7401       switch (r_type)
   7402 	{
   7403 	default:
   7404 	  break;
   7405 
   7406 	  /* Branch taken prediction relocations.  */
   7407 	case R_PPC_ADDR14_BRTAKEN:
   7408 	case R_PPC_REL14_BRTAKEN:
   7409 	  branch_bit = BRANCH_PREDICT_BIT;
   7410 	  /* Fall through.  */
   7411 
   7412 	  /* Branch not taken prediction relocations.  */
   7413 	case R_PPC_ADDR14_BRNTAKEN:
   7414 	case R_PPC_REL14_BRNTAKEN:
   7415 	  {
   7416 	    unsigned int insn;
   7417 
   7418 	    insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   7419 	    insn &= ~BRANCH_PREDICT_BIT;
   7420 	    insn |= branch_bit;
   7421 
   7422 	    from = (rel->r_offset
   7423 		    + input_section->output_offset
   7424 		    + input_section->output_section->vma);
   7425 
   7426 	    /* Invert 'y' bit if not the default.  */
   7427 	    if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
   7428 	      insn ^= BRANCH_PREDICT_BIT;
   7429 
   7430 	    bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   7431 	  }
   7432 	  break;
   7433 
   7434 	case R_PPC_PLT16_HA:
   7435 	  {
   7436 	    unsigned int insn;
   7437 
   7438 	    insn = bfd_get_32 (input_bfd,
   7439 			       contents + rel->r_offset - d_offset);
   7440 	    if ((insn & (0x3fu << 26)) == 15u << 26
   7441 		&& (insn & (0x1f << 16)) != 0)
   7442 	      {
   7443 		if (!bfd_link_pic (info))
   7444 		  {
   7445 		    /* Convert addis to lis.  */
   7446 		    insn &= ~(0x1f << 16);
   7447 		    bfd_put_32 (input_bfd, insn,
   7448 				contents + rel->r_offset - d_offset);
   7449 		  }
   7450 	      }
   7451 	    else if (bfd_link_pic (info))
   7452 	      info->callbacks->einfo
   7453 		(_("%P: %H: error: %s with unexpected instruction %x\n"),
   7454 		 input_bfd, input_section, rel->r_offset,
   7455 		 "R_PPC_PLT16_HA", insn);
   7456 	  }
   7457 	  break;
   7458 	}
   7459 
   7460       if (ELIMINATE_COPY_RELOCS
   7461 	  && h != NULL
   7462 	  && !h->def_regular
   7463 	  && h->protected_def
   7464 	  && ppc_elf_hash_entry (h)->has_addr16_ha
   7465 	  && ppc_elf_hash_entry (h)->has_addr16_lo
   7466 	  && htab->params->pic_fixup > 0)
   7467 	{
   7468 	  /* Convert lis;addi or lis;load/store accessing a protected
   7469 	     variable defined in a shared library to PIC.  */
   7470 	  unsigned int insn;
   7471 
   7472 	  if (r_type == R_PPC_ADDR16_HA)
   7473 	    {
   7474 	      insn = bfd_get_32 (input_bfd,
   7475 				 contents + rel->r_offset - d_offset);
   7476 	      if ((insn & (0x3fu << 26)) == (15u << 26)
   7477 		  && (insn & (0x1f << 16)) == 0 /* lis */)
   7478 		{
   7479 		  bfd_byte *p;
   7480 		  bfd_vma off;
   7481 		  bfd_vma got_addr;
   7482 
   7483 		  p = (contents + input_section->size
   7484 		       - relax_info->workaround_size
   7485 		       - relax_info->picfixup_size
   7486 		       + picfixup_size);
   7487 		  off = (p - contents) - (rel->r_offset - d_offset);
   7488 		  if (off > 0x1fffffc || (off & 3) != 0)
   7489 		    info->callbacks->einfo
   7490 		      (_("%H: fixup branch overflow\n"),
   7491 		       input_bfd, input_section, rel->r_offset);
   7492 
   7493 		  bfd_put_32 (input_bfd, B | off,
   7494 			      contents + rel->r_offset - d_offset);
   7495 		  got_addr = (htab->elf.sgot->output_section->vma
   7496 			      + htab->elf.sgot->output_offset
   7497 			      + (h->got.offset & ~1));
   7498 		  wrel->r_offset = (p - contents) + d_offset;
   7499 		  wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
   7500 		  wrel->r_addend = got_addr;
   7501 		  insn &= ~0xffff;
   7502 		  insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
   7503 		  bfd_put_32 (input_bfd, insn, p);
   7504 
   7505 		  /* Convert lis to lwz, loading address from GOT.  */
   7506 		  insn &= ~0xffff;
   7507 		  insn ^= (32u ^ 15u) << 26;
   7508 		  insn |= (insn & (0x1f << 21)) >> 5;
   7509 		  insn |= got_addr & 0xffff;
   7510 		  bfd_put_32 (input_bfd, insn, p + 4);
   7511 
   7512 		  bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
   7513 		  picfixup_size += 12;
   7514 
   7515 		  /* Use one of the spare relocs, so --emit-relocs
   7516 		     output is reasonable.  */
   7517 		  memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
   7518 		  wrel++, rel++;
   7519 		  rel->r_offset = wrel[-1].r_offset + 4;
   7520 		  rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
   7521 		  rel->r_addend = wrel[-1].r_addend;
   7522 
   7523 		  /* Continue on as if we had a got reloc, to output
   7524 		     dynamic reloc.  */
   7525 		  r_type = R_PPC_GOT16_LO;
   7526 		}
   7527 	      else
   7528 		_bfd_error_handler
   7529 		  /* xgettext:c-format */
   7530 		  (_("%pB(%pA+%#" PRIx64 "): error: "
   7531 		     "%s with unexpected instruction %#x"),
   7532 		   input_bfd, input_section, (uint64_t) rel->r_offset,
   7533 		   "R_PPC_ADDR16_HA", insn);
   7534 	    }
   7535 	  else if (r_type == R_PPC_ADDR16_LO)
   7536 	    {
   7537 	      insn = bfd_get_32 (input_bfd,
   7538 				 contents + rel->r_offset - d_offset);
   7539 	      if ((insn & (0x3fu << 26)) == 14u << 26    /* addi */
   7540 		  || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */
   7541 		  || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */
   7542 		  || (insn & (0x3fu << 26)) == 36u << 26 /* stw */
   7543 		  || (insn & (0x3fu << 26)) == 38u << 26 /* stb */
   7544 		  || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */
   7545 		  || (insn & (0x3fu << 26)) == 42u << 26 /* lha */
   7546 		  || (insn & (0x3fu << 26)) == 44u << 26 /* sth */
   7547 		  || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */
   7548 		  || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */
   7549 		  || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */
   7550 		  || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */
   7551 		  || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */
   7552 		  || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */
   7553 		  || ((insn & (0x3fu << 26)) == 58u << 26 /* lwa,ld,lmd */
   7554 		      && (insn & 3) != 1)
   7555 		  || ((insn & (0x3fu << 26)) == 62u << 26 /* std, stmd */
   7556 		      && ((insn & 3) == 0 || (insn & 3) == 3)))
   7557 		{
   7558 		  /* Arrange to apply the reloc addend, if any.  */
   7559 		  relocation = 0;
   7560 		  unresolved_reloc = FALSE;
   7561 		  rel->r_info = ELF32_R_INFO (0, r_type);
   7562 		}
   7563 	      else
   7564 		_bfd_error_handler
   7565 		  /* xgettext:c-format */
   7566 		  (_("%pB(%pA+%#" PRIx64 "): error: "
   7567 		     "%s with unexpected instruction %#x"),
   7568 		   input_bfd, input_section, (uint64_t) rel->r_offset,
   7569 		   "R_PPC_ADDR16_LO", insn);
   7570 	    }
   7571 	}
   7572 
   7573       ifunc = NULL;
   7574       if (!htab->is_vxworks)
   7575 	{
   7576 	  struct plt_entry *ent;
   7577 
   7578 	  if (h != NULL)
   7579 	    {
   7580 	      if (h->type == STT_GNU_IFUNC)
   7581 		ifunc = &h->plt.plist;
   7582 	    }
   7583 	  else if (local_got_offsets != NULL
   7584 		   && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   7585 	    {
   7586 	      struct plt_entry **local_plt;
   7587 
   7588 	      local_plt = (struct plt_entry **) (local_got_offsets
   7589 						 + symtab_hdr->sh_info);
   7590 	      ifunc = local_plt + r_symndx;
   7591 	    }
   7592 
   7593 	  ent = NULL;
   7594 	  if (ifunc != NULL
   7595 	      && (!bfd_link_pic (info)
   7596 		  || is_branch_reloc (r_type)
   7597 		  || r_type == R_PPC_PLT16_LO
   7598 		  || r_type == R_PPC_PLT16_HI
   7599 		  || r_type == R_PPC_PLT16_HA))
   7600 	    {
   7601 	      addend = 0;
   7602 	      if (bfd_link_pic (info)
   7603 		  && (r_type == R_PPC_PLTREL24
   7604 		      || r_type == R_PPC_PLT16_LO
   7605 		      || r_type == R_PPC_PLT16_HI
   7606 		      || r_type == R_PPC_PLT16_HA))
   7607 		addend = rel->r_addend;
   7608 	      ent = find_plt_ent (ifunc, got2, addend);
   7609 	    }
   7610 	  if (ent != NULL)
   7611 	    {
   7612 	      if (bfd_link_pic (info)
   7613 		  && ent->sec != got2
   7614 		  && htab->plt_type != PLT_NEW
   7615 		  && (!htab->elf.dynamic_sections_created
   7616 		      || h == NULL
   7617 		      || h->dynindx == -1))
   7618 		{
   7619 		  /* Uh oh, we are going to create a pic glink stub
   7620 		     for an ifunc (here for h == NULL and later in
   7621 		     finish_dynamic_symbol for h != NULL), and
   7622 		     apparently are using code compiled with
   7623 		     -mbss-plt.  The difficulty is that -mbss-plt code
   7624 		     gives no indication via a magic PLTREL24 addend
   7625 		     whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
   7626 		     is pointing into a .got2 section (and how far
   7627 		     into .got2).  */
   7628 		    info->callbacks->einfo
   7629 		      /* xgettext:c-format */
   7630 		      (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
   7631 		       input_bfd, input_section, rel->r_offset, sym_name);
   7632 		}
   7633 
   7634 	      unresolved_reloc = FALSE;
   7635 	      if (htab->plt_type == PLT_NEW
   7636 		  || !htab->elf.dynamic_sections_created
   7637 		  || h == NULL
   7638 		  || h->dynindx == -1)
   7639 		relocation = (htab->glink->output_section->vma
   7640 			      + htab->glink->output_offset
   7641 			      + (ent->glink_offset & ~1));
   7642 	      else
   7643 		relocation = (htab->elf.splt->output_section->vma
   7644 			      + htab->elf.splt->output_offset
   7645 			      + ent->plt.offset);
   7646 	    }
   7647 	}
   7648 
   7649       addend = rel->r_addend;
   7650       save_unresolved_reloc = unresolved_reloc;
   7651       howto = NULL;
   7652       if (r_type < R_PPC_max)
   7653 	howto = ppc_elf_howto_table[r_type];
   7654 
   7655       switch (r_type)
   7656 	{
   7657 	default:
   7658 	  break;
   7659 
   7660 	case R_PPC_TPREL16_HA:
   7661 	  if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
   7662 	    {
   7663 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   7664 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   7665 	      if ((insn & ((0x3fu << 26) | 0x1f << 16))
   7666 		  != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
   7667 		/* xgettext:c-format */
   7668 		info->callbacks->minfo
   7669 		  (_("%H: warning: %s unexpected insn %#x.\n"),
   7670 		   input_bfd, input_section, rel->r_offset, howto->name, insn);
   7671 	      else
   7672 		bfd_put_32 (input_bfd, NOP, p);
   7673 	    }
   7674 	  break;
   7675 
   7676 	case R_PPC_TPREL16_LO:
   7677 	  if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
   7678 	    {
   7679 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   7680 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   7681 	      insn &= ~(0x1f << 16);
   7682 	      insn |= 2 << 16;
   7683 	      bfd_put_32 (input_bfd, insn, p);
   7684 	    }
   7685 	  break;
   7686 	}
   7687 
   7688       tls_type = 0;
   7689       switch (r_type)
   7690 	{
   7691 	default:
   7692 	  /* xgettext:c-format */
   7693 	  _bfd_error_handler (_("%pB: %s unsupported"),
   7694 			      input_bfd, howto->name);
   7695 
   7696 	  bfd_set_error (bfd_error_bad_value);
   7697 	  ret = FALSE;
   7698 	  goto copy_reloc;
   7699 
   7700 	case R_PPC_NONE:
   7701 	case R_PPC_TLS:
   7702 	case R_PPC_TLSGD:
   7703 	case R_PPC_TLSLD:
   7704 	case R_PPC_EMB_MRKREF:
   7705 	case R_PPC_GNU_VTINHERIT:
   7706 	case R_PPC_GNU_VTENTRY:
   7707 	  goto copy_reloc;
   7708 
   7709 	  /* GOT16 relocations.  Like an ADDR16 using the symbol's
   7710 	     address in the GOT as relocation value instead of the
   7711 	     symbol's value itself.  Also, create a GOT entry for the
   7712 	     symbol and put the symbol value there.  */
   7713 	case R_PPC_GOT_TLSGD16:
   7714 	case R_PPC_GOT_TLSGD16_LO:
   7715 	case R_PPC_GOT_TLSGD16_HI:
   7716 	case R_PPC_GOT_TLSGD16_HA:
   7717 	  tls_type = TLS_TLS | TLS_GD;
   7718 	  goto dogot;
   7719 
   7720 	case R_PPC_GOT_TLSLD16:
   7721 	case R_PPC_GOT_TLSLD16_LO:
   7722 	case R_PPC_GOT_TLSLD16_HI:
   7723 	case R_PPC_GOT_TLSLD16_HA:
   7724 	  tls_type = TLS_TLS | TLS_LD;
   7725 	  goto dogot;
   7726 
   7727 	case R_PPC_GOT_TPREL16:
   7728 	case R_PPC_GOT_TPREL16_LO:
   7729 	case R_PPC_GOT_TPREL16_HI:
   7730 	case R_PPC_GOT_TPREL16_HA:
   7731 	  tls_type = TLS_TLS | TLS_TPREL;
   7732 	  goto dogot;
   7733 
   7734 	case R_PPC_GOT_DTPREL16:
   7735 	case R_PPC_GOT_DTPREL16_LO:
   7736 	case R_PPC_GOT_DTPREL16_HI:
   7737 	case R_PPC_GOT_DTPREL16_HA:
   7738 	  tls_type = TLS_TLS | TLS_DTPREL;
   7739 	  goto dogot;
   7740 
   7741 	case R_PPC_GOT16:
   7742 	case R_PPC_GOT16_LO:
   7743 	case R_PPC_GOT16_HI:
   7744 	case R_PPC_GOT16_HA:
   7745 	  tls_mask = 0;
   7746 	dogot:
   7747 	  {
   7748 	    /* Relocation is to the entry for this symbol in the global
   7749 	       offset table.  */
   7750 	    bfd_vma off;
   7751 	    bfd_vma *offp;
   7752 	    unsigned long indx;
   7753 
   7754 	    if (htab->elf.sgot == NULL)
   7755 	      abort ();
   7756 
   7757 	    indx = 0;
   7758 	    if (tls_type == (TLS_TLS | TLS_LD)
   7759 		&& SYMBOL_REFERENCES_LOCAL (info, h))
   7760 	      offp = &htab->tlsld_got.offset;
   7761 	    else if (h != NULL)
   7762 	      {
   7763 		if (!htab->elf.dynamic_sections_created
   7764 		    || h->dynindx == -1
   7765 		    || SYMBOL_REFERENCES_LOCAL (info, h)
   7766 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   7767 		  /* This is actually a static link, or it is a
   7768 		     -Bsymbolic link and the symbol is defined
   7769 		     locally, or the symbol was forced to be local
   7770 		     because of a version file.  */
   7771 		  ;
   7772 		else
   7773 		  {
   7774 		    indx = h->dynindx;
   7775 		    unresolved_reloc = FALSE;
   7776 		  }
   7777 		offp = &h->got.offset;
   7778 	      }
   7779 	    else
   7780 	      {
   7781 		if (local_got_offsets == NULL)
   7782 		  abort ();
   7783 		offp = &local_got_offsets[r_symndx];
   7784 	      }
   7785 
   7786 	    /* The offset must always be a multiple of 4.  We use the
   7787 	       least significant bit to record whether we have already
   7788 	       processed this entry.  */
   7789 	    off = *offp;
   7790 	    if ((off & 1) != 0)
   7791 	      off &= ~1;
   7792 	    else
   7793 	      {
   7794 		unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
   7795 				      ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
   7796 						    | TLS_TPREL | TLS_GDIE)
   7797 				      : 0);
   7798 
   7799 		if (offp == &htab->tlsld_got.offset)
   7800 		  tls_m = TLS_LD;
   7801 		else if ((tls_m & TLS_LD) != 0
   7802 			 && SYMBOL_REFERENCES_LOCAL (info, h))
   7803 		  tls_m &= ~TLS_LD;
   7804 
   7805 		/* We might have multiple got entries for this sym.
   7806 		   Initialize them all.  */
   7807 		do
   7808 		  {
   7809 		    int tls_ty = 0;
   7810 
   7811 		    if ((tls_m & TLS_LD) != 0)
   7812 		      {
   7813 			tls_ty = TLS_TLS | TLS_LD;
   7814 			tls_m &= ~TLS_LD;
   7815 		      }
   7816 		    else if ((tls_m & TLS_GD) != 0)
   7817 		      {
   7818 			tls_ty = TLS_TLS | TLS_GD;
   7819 			tls_m &= ~TLS_GD;
   7820 		      }
   7821 		    else if ((tls_m & TLS_DTPREL) != 0)
   7822 		      {
   7823 			tls_ty = TLS_TLS | TLS_DTPREL;
   7824 			tls_m &= ~TLS_DTPREL;
   7825 		      }
   7826 		    else if ((tls_m & (TLS_TPREL | TLS_GDIE)) != 0)
   7827 		      {
   7828 			tls_ty = TLS_TLS | TLS_TPREL;
   7829 			tls_m = 0;
   7830 		      }
   7831 
   7832 		    /* Generate relocs for the dynamic linker.  */
   7833 		    if (indx != 0
   7834 			|| (bfd_link_pic (info)
   7835 			    && (h == NULL
   7836 				|| !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
   7837 			    && !(tls_ty != 0
   7838 				 && bfd_link_executable (info)
   7839 				 && SYMBOL_REFERENCES_LOCAL (info, h))))
   7840 		      {
   7841 			asection *rsec = htab->elf.srelgot;
   7842 			bfd_byte * loc;
   7843 
   7844 			if (ifunc != NULL)
   7845 			  {
   7846 			    rsec = htab->elf.irelplt;
   7847 			    if (indx == 0)
   7848 			      htab->local_ifunc_resolver = 1;
   7849 			    else if (is_static_defined (h))
   7850 			      htab->maybe_local_ifunc_resolver = 1;
   7851 			  }
   7852 			outrel.r_offset = (htab->elf.sgot->output_section->vma
   7853 					   + htab->elf.sgot->output_offset
   7854 					   + off);
   7855 			outrel.r_addend = 0;
   7856 			if (tls_ty & (TLS_LD | TLS_GD))
   7857 			  {
   7858 			    outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
   7859 			    if (tls_ty == (TLS_TLS | TLS_GD))
   7860 			      {
   7861 				loc = rsec->contents;
   7862 				loc += (rsec->reloc_count++
   7863 					* sizeof (Elf32_External_Rela));
   7864 				bfd_elf32_swap_reloca_out (output_bfd,
   7865 							   &outrel, loc);
   7866 				outrel.r_offset += 4;
   7867 				outrel.r_info
   7868 				  = ELF32_R_INFO (indx, R_PPC_DTPREL32);
   7869 			      }
   7870 			  }
   7871 			else if (tls_ty == (TLS_TLS | TLS_DTPREL))
   7872 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
   7873 			else if (tls_ty == (TLS_TLS | TLS_TPREL))
   7874 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
   7875 			else if (indx != 0)
   7876 			  outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
   7877 			else if (ifunc != NULL)
   7878 			  outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   7879 			else
   7880 			  outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   7881 			if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
   7882 			  {
   7883 			    outrel.r_addend += relocation;
   7884 			    if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
   7885 			      {
   7886 				if (htab->elf.tls_sec == NULL)
   7887 				  outrel.r_addend = 0;
   7888 				else
   7889 				  outrel.r_addend -= htab->elf.tls_sec->vma;
   7890 			      }
   7891 			  }
   7892 			loc = rsec->contents;
   7893 			loc += (rsec->reloc_count++
   7894 				* sizeof (Elf32_External_Rela));
   7895 			bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   7896 		      }
   7897 
   7898 		    /* Init the .got section contents if we're not
   7899 		       emitting a reloc.  */
   7900 		    else
   7901 		      {
   7902 			bfd_vma value = relocation;
   7903 
   7904 			if (tls_ty != 0)
   7905 			  {
   7906 			    if (htab->elf.tls_sec == NULL)
   7907 			      value = 0;
   7908 			    else
   7909 			      {
   7910 				if (tls_ty & TLS_LD)
   7911 				  value = 0;
   7912 				else
   7913 				  value -= htab->elf.tls_sec->vma + DTP_OFFSET;
   7914 				if (tls_ty & TLS_TPREL)
   7915 				  value += DTP_OFFSET - TP_OFFSET;
   7916 			      }
   7917 
   7918 			    if (tls_ty & (TLS_LD | TLS_GD))
   7919 			      {
   7920 				bfd_put_32 (input_bfd, value,
   7921 					    htab->elf.sgot->contents + off + 4);
   7922 				value = 1;
   7923 			      }
   7924 			  }
   7925 			bfd_put_32 (input_bfd, value,
   7926 				    htab->elf.sgot->contents + off);
   7927 		      }
   7928 
   7929 		    off += 4;
   7930 		    if (tls_ty & (TLS_LD | TLS_GD))
   7931 		      off += 4;
   7932 		  }
   7933 		while (tls_m != 0);
   7934 
   7935 		off = *offp;
   7936 		*offp = off | 1;
   7937 	      }
   7938 
   7939 	    if (off >= (bfd_vma) -2)
   7940 	      abort ();
   7941 
   7942 	    if ((tls_type & TLS_TLS) != 0)
   7943 	      {
   7944 		if (tls_type != (TLS_TLS | TLS_LD))
   7945 		  {
   7946 		    if ((tls_mask & TLS_LD) != 0
   7947 			&& !SYMBOL_REFERENCES_LOCAL (info, h))
   7948 		      off += 8;
   7949 		    if (tls_type != (TLS_TLS | TLS_GD))
   7950 		      {
   7951 			if ((tls_mask & TLS_GD) != 0)
   7952 			  off += 8;
   7953 			if (tls_type != (TLS_TLS | TLS_DTPREL))
   7954 			  {
   7955 			    if ((tls_mask & TLS_DTPREL) != 0)
   7956 			      off += 4;
   7957 			  }
   7958 		      }
   7959 		  }
   7960 	      }
   7961 
   7962 	    /* If here for a picfixup, we're done.  */
   7963 	    if (r_type != ELF32_R_TYPE (rel->r_info))
   7964 	      goto copy_reloc;
   7965 
   7966 	    relocation = (htab->elf.sgot->output_section->vma
   7967 			  + htab->elf.sgot->output_offset
   7968 			  + off
   7969 			  - SYM_VAL (htab->elf.hgot));
   7970 
   7971 	    /* Addends on got relocations don't make much sense.
   7972 	       x+off@got is actually x@got+off, and since the got is
   7973 	       generated by a hash table traversal, the value in the
   7974 	       got at entry m+n bears little relation to the entry m.  */
   7975 	    if (addend != 0)
   7976 	      info->callbacks->einfo
   7977 		/* xgettext:c-format */
   7978 		(_("%H: non-zero addend on %s reloc against `%s'\n"),
   7979 		 input_bfd, input_section, rel->r_offset,
   7980 		 howto->name,
   7981 		 sym_name);
   7982 	  }
   7983 	  break;
   7984 
   7985 	  /* Relocations that need no special processing.  */
   7986 	case R_PPC_LOCAL24PC:
   7987 	  /* It makes no sense to point a local relocation
   7988 	     at a symbol not in this object.  */
   7989 	  if (unresolved_reloc)
   7990 	    {
   7991 	      (*info->callbacks->undefined_symbol) (info,
   7992 						    h->root.root.string,
   7993 						    input_bfd,
   7994 						    input_section,
   7995 						    rel->r_offset,
   7996 						    TRUE);
   7997 	      goto copy_reloc;
   7998 	    }
   7999 	  if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
   8000 	    {
   8001 	      /* @local on an ifunc does not really make sense since
   8002 		 the ifunc resolver can take you anywhere.  More
   8003 		 seriously, calls to ifuncs must go through a plt call
   8004 		 stub, and for pic the plt call stubs uses r30 to
   8005 		 access the PLT.  The problem is that a call that is
   8006 		 local won't have the +32k reloc addend trick marking
   8007 		 -fPIC code, so the linker won't know whether r30 is
   8008 		 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section.  */
   8009 	      /* xgettext:c-format */
   8010 	      info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
   8011 				      input_bfd, input_section, rel->r_offset,
   8012 				      h->root.root.string);
   8013 	    }
   8014 	  break;
   8015 
   8016 	case R_PPC_DTPREL16:
   8017 	case R_PPC_DTPREL16_LO:
   8018 	case R_PPC_DTPREL16_HI:
   8019 	case R_PPC_DTPREL16_HA:
   8020 	  if (htab->elf.tls_sec != NULL)
   8021 	    addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
   8022 	  break;
   8023 
   8024 	  /* Relocations that may need to be propagated if this is a shared
   8025 	     object.  */
   8026 	case R_PPC_TPREL16:
   8027 	case R_PPC_TPREL16_LO:
   8028 	case R_PPC_TPREL16_HI:
   8029 	case R_PPC_TPREL16_HA:
   8030 	  if (h != NULL
   8031 	      && h->root.type == bfd_link_hash_undefweak
   8032 	      && h->dynindx == -1)
   8033 	    {
   8034 	      /* Make this relocation against an undefined weak symbol
   8035 		 resolve to zero.  This is really just a tweak, since
   8036 		 code using weak externs ought to check that they are
   8037 		 defined before using them.  */
   8038 	      bfd_byte *p = contents + rel->r_offset - d_offset;
   8039 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   8040 	      insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
   8041 	      if (insn != 0)
   8042 		bfd_put_32 (input_bfd, insn, p);
   8043 	      break;
   8044 	    }
   8045 	  if (htab->elf.tls_sec != NULL)
   8046 	    addend -= htab->elf.tls_sec->vma + TP_OFFSET;
   8047 	  /* The TPREL16 relocs shouldn't really be used in shared
   8048 	     libs or with non-local symbols as that will result in
   8049 	     DT_TEXTREL being set, but support them anyway.  */
   8050 	  goto dodyn;
   8051 
   8052 	case R_PPC_TPREL32:
   8053 	  if (htab->elf.tls_sec != NULL)
   8054 	    addend -= htab->elf.tls_sec->vma + TP_OFFSET;
   8055 	  goto dodyn;
   8056 
   8057 	case R_PPC_DTPREL32:
   8058 	  if (htab->elf.tls_sec != NULL)
   8059 	    addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
   8060 	  goto dodyn;
   8061 
   8062 	case R_PPC_DTPMOD32:
   8063 	  relocation = 1;
   8064 	  addend = 0;
   8065 	  goto dodyn;
   8066 
   8067 	case R_PPC_REL16:
   8068 	case R_PPC_REL16_LO:
   8069 	case R_PPC_REL16_HI:
   8070 	case R_PPC_REL16_HA:
   8071 	case R_PPC_REL16DX_HA:
   8072 	  break;
   8073 
   8074 	case R_PPC_REL32:
   8075 	  if (h == NULL || h == htab->elf.hgot)
   8076 	    break;
   8077 	  /* fall through */
   8078 
   8079 	case R_PPC_ADDR32:
   8080 	case R_PPC_ADDR16:
   8081 	case R_PPC_ADDR16_LO:
   8082 	case R_PPC_ADDR16_HI:
   8083 	case R_PPC_ADDR16_HA:
   8084 	case R_PPC_UADDR32:
   8085 	case R_PPC_UADDR16:
   8086 	  goto dodyn;
   8087 
   8088 	case R_PPC_VLE_REL8:
   8089 	case R_PPC_VLE_REL15:
   8090 	case R_PPC_VLE_REL24:
   8091 	case R_PPC_REL24:
   8092 	case R_PPC_REL14:
   8093 	case R_PPC_REL14_BRTAKEN:
   8094 	case R_PPC_REL14_BRNTAKEN:
   8095 	  /* If these relocations are not to a named symbol, they can be
   8096 	     handled right here, no need to bother the dynamic linker.  */
   8097 	  if (SYMBOL_CALLS_LOCAL (info, h)
   8098 	      || h == htab->elf.hgot)
   8099 	    break;
   8100 	  /* fall through */
   8101 
   8102 	case R_PPC_ADDR24:
   8103 	case R_PPC_ADDR14:
   8104 	case R_PPC_ADDR14_BRTAKEN:
   8105 	case R_PPC_ADDR14_BRNTAKEN:
   8106 	  if (h != NULL && !bfd_link_pic (info))
   8107 	    break;
   8108 	  /* fall through */
   8109 
   8110 	dodyn:
   8111 	  if ((input_section->flags & SEC_ALLOC) == 0
   8112 	      || is_vxworks_tls)
   8113 	    break;
   8114 
   8115 	  if (bfd_link_pic (info)
   8116 	      ? ((h == NULL
   8117 		  || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
   8118 		 && ((h != NULL && pc_dynrelocs (h))
   8119 		     || must_be_dyn_reloc (info, r_type)))
   8120 	      : (h != NULL
   8121 		 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
   8122 	    {
   8123 	      int skip;
   8124 	      bfd_byte *loc;
   8125 	      asection *sreloc;
   8126 	      long indx = 0;
   8127 
   8128 #ifdef DEBUG
   8129 	      fprintf (stderr, "ppc_elf_relocate_section needs to "
   8130 		       "create relocation for %s\n",
   8131 		       (h && h->root.root.string
   8132 			? h->root.root.string : "<unknown>"));
   8133 #endif
   8134 
   8135 	      /* When generating a shared object, these relocations
   8136 		 are copied into the output file to be resolved at run
   8137 		 time.  */
   8138 	      skip = 0;
   8139 	      outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
   8140 							 input_section,
   8141 							 rel->r_offset);
   8142 	      if (outrel.r_offset == (bfd_vma) -1
   8143 		  || outrel.r_offset == (bfd_vma) -2)
   8144 		skip = (int) outrel.r_offset;
   8145 	      outrel.r_offset += (input_section->output_section->vma
   8146 				  + input_section->output_offset);
   8147 
   8148 	      /* Optimize unaligned reloc use.  */
   8149 	      if ((r_type == R_PPC_ADDR32 && (outrel.r_offset & 3) != 0)
   8150 		  || (r_type == R_PPC_UADDR32 && (outrel.r_offset & 3) == 0))
   8151 		r_type ^= R_PPC_ADDR32 ^ R_PPC_UADDR32;
   8152 	      if ((r_type == R_PPC_ADDR16 && (outrel.r_offset & 1) != 0)
   8153 		  || (r_type == R_PPC_UADDR16 && (outrel.r_offset & 1) == 0))
   8154 		r_type ^= R_PPC_ADDR16 ^ R_PPC_UADDR16;
   8155 
   8156 	      if (skip)
   8157 		memset (&outrel, 0, sizeof outrel);
   8158 	      else if (!SYMBOL_REFERENCES_LOCAL (info, h))
   8159 		{
   8160 		  indx = h->dynindx;
   8161 		  BFD_ASSERT (indx != -1);
   8162 		  unresolved_reloc = FALSE;
   8163 		  outrel.r_info = ELF32_R_INFO (indx, r_type);
   8164 		  outrel.r_addend = rel->r_addend;
   8165 		}
   8166 	      else
   8167 		{
   8168 		  outrel.r_addend = relocation + rel->r_addend;
   8169 
   8170 		  if (r_type != R_PPC_ADDR32)
   8171 		    {
   8172 		      if (ifunc != NULL)
   8173 			{
   8174 			  /* If we get here when building a static
   8175 			     executable, then the libc startup function
   8176 			     responsible for applying indirect function
   8177 			     relocations is going to complain about
   8178 			     the reloc type.
   8179 			     If we get here when building a dynamic
   8180 			     executable, it will be because we have
   8181 			     a text relocation.  The dynamic loader
   8182 			     will set the text segment writable and
   8183 			     non-executable to apply text relocations.
   8184 			     So we'll segfault when trying to run the
   8185 			     indirection function to resolve the reloc.  */
   8186 			  info->callbacks->einfo
   8187 			    /* xgettext:c-format */
   8188 			    (_("%H: relocation %s for indirect "
   8189 			       "function %s unsupported\n"),
   8190 			     input_bfd, input_section, rel->r_offset,
   8191 			     howto->name,
   8192 			     sym_name);
   8193 			  ret = FALSE;
   8194 			}
   8195 		      else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
   8196 			;
   8197 		      else if (sec == NULL || sec->owner == NULL)
   8198 			{
   8199 			  bfd_set_error (bfd_error_bad_value);
   8200 			  ret = FALSE;
   8201 			}
   8202 		      else
   8203 			{
   8204 			  asection *osec;
   8205 
   8206 			  /* We are turning this relocation into one
   8207 			     against a section symbol.  It would be
   8208 			     proper to subtract the symbol's value,
   8209 			     osec->vma, from the emitted reloc addend,
   8210 			     but ld.so expects buggy relocs.
   8211 			     FIXME: Why not always use a zero index?  */
   8212 			  osec = sec->output_section;
   8213 			  if ((osec->flags & SEC_THREAD_LOCAL) != 0)
   8214 			    {
   8215 			      osec = htab->elf.tls_sec;
   8216 			      indx = 0;
   8217 			    }
   8218 			  else
   8219 			    {
   8220 			      indx = elf_section_data (osec)->dynindx;
   8221 			      if (indx == 0)
   8222 				{
   8223 				  osec = htab->elf.text_index_section;
   8224 				  indx = elf_section_data (osec)->dynindx;
   8225 				}
   8226 			      BFD_ASSERT (indx != 0);
   8227 			    }
   8228 
   8229 			  /* ld.so doesn't expect buggy TLS relocs.
   8230 			     Don't leave the symbol value in the
   8231 			     addend for them.  */
   8232 			  if (IS_PPC_TLS_RELOC (r_type))
   8233 			    outrel.r_addend -= osec->vma;
   8234 			}
   8235 
   8236 		      outrel.r_info = ELF32_R_INFO (indx, r_type);
   8237 		    }
   8238 		  else if (ifunc != NULL)
   8239 		    outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   8240 		  else
   8241 		    outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   8242 		}
   8243 
   8244 	      sreloc = elf_section_data (input_section)->sreloc;
   8245 	      if (ifunc)
   8246 		{
   8247 		  sreloc = htab->elf.irelplt;
   8248 		  if (indx == 0)
   8249 		    htab->local_ifunc_resolver = 1;
   8250 		  else if (is_static_defined (h))
   8251 		    htab->maybe_local_ifunc_resolver = 1;
   8252 		}
   8253 	      if (sreloc == NULL)
   8254 		return FALSE;
   8255 
   8256 	      loc = sreloc->contents;
   8257 	      loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
   8258 	      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   8259 
   8260 	      if (skip == -1)
   8261 		goto copy_reloc;
   8262 
   8263 	      /* This reloc will be computed at runtime.  Clear the memory
   8264 		 so that it contains a predictable value for prelink.  */
   8265 	      if (!skip)
   8266 		{
   8267 		  relocation = howto->pc_relative ? outrel.r_offset : 0;
   8268 		  addend = 0;
   8269 		  break;
   8270 		}
   8271 	    }
   8272 	  break;
   8273 
   8274 	case R_PPC_RELAX_PLT:
   8275 	case R_PPC_RELAX_PLTREL24:
   8276 	  if (h != NULL)
   8277 	    {
   8278 	      struct plt_entry *ent;
   8279 	      bfd_vma got2_addend = 0;
   8280 
   8281 	      if (r_type == R_PPC_RELAX_PLTREL24)
   8282 		{
   8283 		  if (bfd_link_pic (info))
   8284 		    got2_addend = addend;
   8285 		  addend = 0;
   8286 		}
   8287 	      ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
   8288 	      if (htab->plt_type == PLT_NEW)
   8289 		relocation = (htab->glink->output_section->vma
   8290 			      + htab->glink->output_offset
   8291 			      + ent->glink_offset);
   8292 	      else
   8293 		relocation = (htab->elf.splt->output_section->vma
   8294 			      + htab->elf.splt->output_offset
   8295 			      + ent->plt.offset);
   8296 	    }
   8297 	  /* Fall through.  */
   8298 
   8299 	case R_PPC_RELAX:
   8300 	  {
   8301 	    const int *stub;
   8302 	    size_t size;
   8303 	    size_t insn_offset = rel->r_offset;
   8304 	    unsigned int insn;
   8305 
   8306 	    if (bfd_link_pic (info))
   8307 	      {
   8308 		relocation -= (input_section->output_section->vma
   8309 			       + input_section->output_offset
   8310 			       + rel->r_offset - 4);
   8311 		stub = shared_stub_entry;
   8312 		bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
   8313 		bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
   8314 		bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
   8315 		stub += 3;
   8316 		size = ARRAY_SIZE (shared_stub_entry) - 3;
   8317 	      }
   8318 	    else
   8319 	      {
   8320 		stub = stub_entry;
   8321 		size = ARRAY_SIZE (stub_entry);
   8322 	      }
   8323 
   8324 	    relocation += addend;
   8325 	    if (bfd_link_relocatable (info))
   8326 	      relocation = 0;
   8327 
   8328 	    /* First insn is HA, second is LO.  */
   8329 	    insn = *stub++;
   8330 	    insn |= ((relocation + 0x8000) >> 16) & 0xffff;
   8331 	    bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8332 	    insn_offset += 4;
   8333 
   8334 	    insn = *stub++;
   8335 	    insn |= relocation & 0xffff;
   8336 	    bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8337 	    insn_offset += 4;
   8338 	    size -= 2;
   8339 
   8340 	    while (size != 0)
   8341 	      {
   8342 		insn = *stub++;
   8343 		--size;
   8344 		bfd_put_32 (input_bfd, insn, contents + insn_offset);
   8345 		insn_offset += 4;
   8346 	      }
   8347 
   8348 	    /* Rewrite the reloc and convert one of the trailing nop
   8349 	       relocs to describe this relocation.  */
   8350 	    BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
   8351 	    /* The relocs are at the bottom 2 bytes */
   8352 	    wrel->r_offset = rel->r_offset + d_offset;
   8353 	    wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
   8354 	    wrel->r_addend = rel->r_addend;
   8355 	    memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
   8356 	    wrel++, rel++;
   8357 	    wrel->r_offset += 4;
   8358 	    wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
   8359 	  }
   8360 	  continue;
   8361 
   8362 	  /* Indirect .sdata relocation.  */
   8363 	case R_PPC_EMB_SDAI16:
   8364 	  BFD_ASSERT (htab->sdata[0].section != NULL);
   8365 	  if (!is_static_defined (htab->sdata[0].sym))
   8366 	    {
   8367 	      unresolved_reloc = TRUE;
   8368 	      break;
   8369 	    }
   8370 	  relocation
   8371 	    = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
   8372 						 h, relocation, rel);
   8373 	  addend = 0;
   8374 	  break;
   8375 
   8376 	  /* Indirect .sdata2 relocation.  */
   8377 	case R_PPC_EMB_SDA2I16:
   8378 	  BFD_ASSERT (htab->sdata[1].section != NULL);
   8379 	  if (!is_static_defined (htab->sdata[1].sym))
   8380 	    {
   8381 	      unresolved_reloc = TRUE;
   8382 	      break;
   8383 	    }
   8384 	  relocation
   8385 	    = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
   8386 						 h, relocation, rel);
   8387 	  addend = 0;
   8388 	  break;
   8389 
   8390 	  /* Handle the TOC16 reloc.  We want to use the offset within the .got
   8391 	     section, not the actual VMA.  This is appropriate when generating
   8392 	     an embedded ELF object, for which the .got section acts like the
   8393 	     AIX .toc section.  */
   8394 	case R_PPC_TOC16:			/* phony GOT16 relocations */
   8395 	  if (sec == NULL || sec->output_section == NULL)
   8396 	    {
   8397 	      unresolved_reloc = TRUE;
   8398 	      break;
   8399 	    }
   8400 	  BFD_ASSERT (strcmp (bfd_section_name (sec), ".got") == 0
   8401 		      || strcmp (bfd_section_name (sec), ".cgot") == 0);
   8402 
   8403 	  addend -= sec->output_section->vma + sec->output_offset + 0x8000;
   8404 	  break;
   8405 
   8406 	case R_PPC_PLTREL24:
   8407 	  if (h != NULL && ifunc == NULL)
   8408 	    {
   8409 	      struct plt_entry *ent;
   8410 
   8411 	      ent = find_plt_ent (&h->plt.plist, got2,
   8412 				  bfd_link_pic (info) ? addend : 0);
   8413 	      if (ent == NULL
   8414 		  || htab->elf.splt == NULL)
   8415 		{
   8416 		  /* We didn't make a PLT entry for this symbol.  This
   8417 		     happens when statically linking PIC code, or when
   8418 		     using -Bsymbolic.  */
   8419 		}
   8420 	      else
   8421 		{
   8422 		  /* Relocation is to the entry for this symbol in the
   8423 		     procedure linkage table.  */
   8424 		  unresolved_reloc = FALSE;
   8425 		  if (htab->plt_type == PLT_NEW)
   8426 		    relocation = (htab->glink->output_section->vma
   8427 				  + htab->glink->output_offset
   8428 				  + ent->glink_offset);
   8429 		  else
   8430 		    relocation = (htab->elf.splt->output_section->vma
   8431 				  + htab->elf.splt->output_offset
   8432 				  + ent->plt.offset);
   8433 		}
   8434 	    }
   8435 
   8436 	  /* R_PPC_PLTREL24 is rather special.  If non-zero, the
   8437 	     addend specifies the GOT pointer offset within .got2.
   8438 	     Don't apply it to the relocation field.  */
   8439 	  addend = 0;
   8440 	  break;
   8441 
   8442 	case R_PPC_PLTSEQ:
   8443 	case R_PPC_PLTCALL:
   8444 	case R_PPC_PLT16_LO:
   8445 	case R_PPC_PLT16_HI:
   8446 	case R_PPC_PLT16_HA:
   8447 	  plt_list = NULL;
   8448 	  if (h != NULL)
   8449 	    plt_list = &h->plt.plist;
   8450 	  else if (ifunc != NULL)
   8451 	    plt_list = ifunc;
   8452 	  else if (local_got_offsets != NULL)
   8453 	    {
   8454 	      struct plt_entry **local_plt;
   8455 	      local_plt = (struct plt_entry **) (local_got_offsets
   8456 						 + symtab_hdr->sh_info);
   8457 	      plt_list = local_plt + r_symndx;
   8458 	    }
   8459 	  unresolved_reloc = TRUE;
   8460 	  if (plt_list != NULL)
   8461 	    {
   8462 	      struct plt_entry *ent;
   8463 
   8464 	      ent = find_plt_ent (plt_list, got2,
   8465 				  bfd_link_pic (info) ? addend : 0);
   8466 	      if (ent != NULL && ent->plt.offset != (bfd_vma) -1)
   8467 		{
   8468 		  asection *plt;
   8469 
   8470 		  unresolved_reloc = FALSE;
   8471 		  plt = htab->elf.splt;
   8472 		  if (!htab->elf.dynamic_sections_created
   8473 		      || h == NULL
   8474 		      || h->dynindx == -1)
   8475 		    {
   8476 		      if (ifunc != NULL)
   8477 			plt = htab->elf.iplt;
   8478 		      else
   8479 			plt = htab->pltlocal;
   8480 		    }
   8481 		  relocation = (plt->output_section->vma
   8482 				+ plt->output_offset
   8483 				+ ent->plt.offset);
   8484 		  if (bfd_link_pic (info))
   8485 		    {
   8486 		      bfd_vma got = 0;
   8487 
   8488 		      if (ent->addend >= 32768)
   8489 			got = (ent->addend
   8490 			       + ent->sec->output_section->vma
   8491 			       + ent->sec->output_offset);
   8492 		      else
   8493 			got = SYM_VAL (htab->elf.hgot);
   8494 		      relocation -= got;
   8495 		    }
   8496 		}
   8497 	    }
   8498 	  addend = 0;
   8499 	  break;
   8500 
   8501 	  /* Relocate against _SDA_BASE_.  */
   8502 	case R_PPC_SDAREL16:
   8503 	  {
   8504 	    const char *name;
   8505 	    struct elf_link_hash_entry *sda = htab->sdata[0].sym;
   8506 
   8507 	    if (sec == NULL
   8508 		|| sec->output_section == NULL
   8509 		|| !is_static_defined (sda))
   8510 	      {
   8511 		unresolved_reloc = TRUE;
   8512 		break;
   8513 	      }
   8514 	    addend -= SYM_VAL (sda);
   8515 
   8516 	    name = bfd_section_name (sec->output_section);
   8517 	    if (!(strcmp (name, ".sdata") == 0
   8518 		  || strcmp (name, ".sbss") == 0))
   8519 	      {
   8520 		_bfd_error_handler
   8521 		  /* xgettext:c-format */
   8522 		  (_("%pB: the target (%s) of a %s relocation is "
   8523 		     "in the wrong output section (%s)"),
   8524 		   input_bfd,
   8525 		   sym_name,
   8526 		   howto->name,
   8527 		   name);
   8528 	      }
   8529 	  }
   8530 	  break;
   8531 
   8532 	  /* Relocate against _SDA2_BASE_.  */
   8533 	case R_PPC_EMB_SDA2REL:
   8534 	  {
   8535 	    const char *name;
   8536 	    struct elf_link_hash_entry *sda = htab->sdata[1].sym;
   8537 
   8538 	    if (sec == NULL
   8539 		|| sec->output_section == NULL
   8540 		|| !is_static_defined (sda))
   8541 	      {
   8542 		unresolved_reloc = TRUE;
   8543 		break;
   8544 	      }
   8545 	    addend -= SYM_VAL (sda);
   8546 
   8547 	    name = bfd_section_name (sec->output_section);
   8548 	    if (!(strcmp (name, ".sdata2") == 0
   8549 		  || strcmp (name, ".sbss2") == 0))
   8550 	      {
   8551 		_bfd_error_handler
   8552 		  /* xgettext:c-format */
   8553 		  (_("%pB: the target (%s) of a %s relocation is "
   8554 		     "in the wrong output section (%s)"),
   8555 		   input_bfd,
   8556 		   sym_name,
   8557 		   howto->name,
   8558 		   name);
   8559 	      }
   8560 	  }
   8561 	  break;
   8562 
   8563 	case R_PPC_VLE_LO16A:
   8564 	  relocation = relocation + addend;
   8565 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8566 			       contents + rel->r_offset, relocation,
   8567 			       split16a_type, htab->params->vle_reloc_fixup);
   8568 	  goto copy_reloc;
   8569 
   8570 	case R_PPC_VLE_LO16D:
   8571 	  relocation = relocation + addend;
   8572 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8573 			       contents + rel->r_offset, relocation,
   8574 			       split16d_type, htab->params->vle_reloc_fixup);
   8575 	  goto copy_reloc;
   8576 
   8577 	case R_PPC_VLE_HI16A:
   8578 	  relocation = (relocation + addend) >> 16;
   8579 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8580 			       contents + rel->r_offset, relocation,
   8581 			       split16a_type, htab->params->vle_reloc_fixup);
   8582 	  goto copy_reloc;
   8583 
   8584 	case R_PPC_VLE_HI16D:
   8585 	  relocation = (relocation + addend) >> 16;
   8586 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8587 			       contents + rel->r_offset, relocation,
   8588 			       split16d_type, htab->params->vle_reloc_fixup);
   8589 	  goto copy_reloc;
   8590 
   8591 	case R_PPC_VLE_HA16A:
   8592 	  relocation = (relocation + addend + 0x8000) >> 16;
   8593 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8594 			       contents + rel->r_offset, relocation,
   8595 			       split16a_type, htab->params->vle_reloc_fixup);
   8596 	  goto copy_reloc;
   8597 
   8598 	case R_PPC_VLE_HA16D:
   8599 	  relocation = (relocation + addend + 0x8000) >> 16;
   8600 	  ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8601 			       contents + rel->r_offset, relocation,
   8602 			       split16d_type, htab->params->vle_reloc_fixup);
   8603 	  goto copy_reloc;
   8604 
   8605 	  /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0.  */
   8606 	case R_PPC_EMB_SDA21:
   8607 	case R_PPC_VLE_SDA21:
   8608 	case R_PPC_EMB_RELSDA:
   8609 	case R_PPC_VLE_SDA21_LO:
   8610 	  {
   8611 	    const char *name;
   8612 	    int reg;
   8613 	    unsigned int insn;
   8614 	    struct elf_link_hash_entry *sda = NULL;
   8615 
   8616 	    if (sec == NULL || sec->output_section == NULL)
   8617 	      {
   8618 		unresolved_reloc = TRUE;
   8619 		break;
   8620 	      }
   8621 
   8622 	    name = bfd_section_name (sec->output_section);
   8623 	    if (strcmp (name, ".sdata") == 0
   8624 		|| strcmp (name, ".sbss") == 0)
   8625 	      {
   8626 		reg = 13;
   8627 		sda = htab->sdata[0].sym;
   8628 	      }
   8629 	    else if (strcmp (name, ".sdata2") == 0
   8630 		     || strcmp (name, ".sbss2") == 0)
   8631 	      {
   8632 		reg = 2;
   8633 		sda = htab->sdata[1].sym;
   8634 	      }
   8635 	    else if (strcmp (name, ".PPC.EMB.sdata0") == 0
   8636 		     || strcmp (name, ".PPC.EMB.sbss0") == 0)
   8637 	      {
   8638 		reg = 0;
   8639 	      }
   8640 	    else
   8641 	      {
   8642 		_bfd_error_handler
   8643 		  /* xgettext:c-format */
   8644 		  (_("%pB: the target (%s) of a %s relocation is "
   8645 		     "in the wrong output section (%s)"),
   8646 		   input_bfd,
   8647 		   sym_name,
   8648 		   howto->name,
   8649 		   name);
   8650 
   8651 		bfd_set_error (bfd_error_bad_value);
   8652 		ret = FALSE;
   8653 		goto copy_reloc;
   8654 	      }
   8655 
   8656 	    if (sda != NULL)
   8657 	      {
   8658 		if (!is_static_defined (sda))
   8659 		  {
   8660 		    unresolved_reloc = TRUE;
   8661 		    break;
   8662 		  }
   8663 		addend -= SYM_VAL (sda);
   8664 	      }
   8665 
   8666 	    if (r_type == R_PPC_EMB_RELSDA)
   8667 	      break;
   8668 
   8669 	    /* The PowerPC Embedded Application Binary Interface
   8670 	       version 1.0 insanely chose to specify R_PPC_EMB_SDA21
   8671 	       operating on a 24-bit field at r_offset.  GNU as and
   8672 	       GNU ld have always assumed R_PPC_EMB_SDA21 operates on
   8673 	       a 32-bit bit insn at r_offset.  Cope with object file
   8674 	       producers that possibly comply with the EABI in
   8675 	       generating an odd r_offset for big-endian objects.  */
   8676 	    if (r_type == R_PPC_EMB_SDA21)
   8677 	      rel->r_offset &= ~1;
   8678 
   8679 	    insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   8680 	    if (reg == 0
   8681 		&& (r_type == R_PPC_VLE_SDA21
   8682 		    || r_type == R_PPC_VLE_SDA21_LO))
   8683 	      {
   8684 		relocation = relocation + addend;
   8685 		addend = 0;
   8686 
   8687 		/* Force e_li insn, keeping RT from original insn.  */
   8688 		insn &= 0x1f << 21;
   8689 		insn |= 28u << 26;
   8690 
   8691 		/* We have an li20 field, bits 17..20, 11..15, 21..31.  */
   8692 		/* Top 4 bits of value to 17..20.  */
   8693 		insn |= (relocation & 0xf0000) >> 5;
   8694 		/* Next 5 bits of the value to 11..15.  */
   8695 		insn |= (relocation & 0xf800) << 5;
   8696 		/* And the final 11 bits of the value to bits 21 to 31.  */
   8697 		insn |= relocation & 0x7ff;
   8698 
   8699 		bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   8700 
   8701 		if (r_type == R_PPC_VLE_SDA21
   8702 		    && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
   8703 		  goto overflow;
   8704 		goto copy_reloc;
   8705 	      }
   8706 	    /* Fill in register field.  */
   8707 	    insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
   8708 	    bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   8709 	  }
   8710 	  break;
   8711 
   8712 	case R_PPC_VLE_SDAREL_LO16A:
   8713 	case R_PPC_VLE_SDAREL_LO16D:
   8714 	case R_PPC_VLE_SDAREL_HI16A:
   8715 	case R_PPC_VLE_SDAREL_HI16D:
   8716 	case R_PPC_VLE_SDAREL_HA16A:
   8717 	case R_PPC_VLE_SDAREL_HA16D:
   8718 	  {
   8719 	    bfd_vma value;
   8720 	    const char *name;
   8721 	    struct elf_link_hash_entry *sda = NULL;
   8722 
   8723 	    if (sec == NULL || sec->output_section == NULL)
   8724 	      {
   8725 		unresolved_reloc = TRUE;
   8726 		break;
   8727 	      }
   8728 
   8729 	    name = bfd_section_name (sec->output_section);
   8730 	    if (strcmp (name, ".sdata") == 0
   8731 		|| strcmp (name, ".sbss") == 0)
   8732 	      sda = htab->sdata[0].sym;
   8733 	    else if (strcmp (name, ".sdata2") == 0
   8734 		     || strcmp (name, ".sbss2") == 0)
   8735 	      sda = htab->sdata[1].sym;
   8736 	    else
   8737 	      {
   8738 		_bfd_error_handler
   8739 		  /* xgettext:c-format */
   8740 		  (_("%pB: the target (%s) of a %s relocation is "
   8741 		     "in the wrong output section (%s)"),
   8742 		   input_bfd,
   8743 		   sym_name,
   8744 		   howto->name,
   8745 		   name);
   8746 
   8747 		bfd_set_error (bfd_error_bad_value);
   8748 		ret = FALSE;
   8749 		goto copy_reloc;
   8750 	      }
   8751 
   8752 	    if (sda == NULL || !is_static_defined (sda))
   8753 	      {
   8754 		unresolved_reloc = TRUE;
   8755 		break;
   8756 	      }
   8757 	    value = relocation + addend - SYM_VAL (sda);
   8758 
   8759 	    if (r_type == R_PPC_VLE_SDAREL_LO16A)
   8760 	      ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8761 				   contents + rel->r_offset, value,
   8762 				   split16a_type,
   8763 				   htab->params->vle_reloc_fixup);
   8764 	    else if (r_type == R_PPC_VLE_SDAREL_LO16D)
   8765 	      ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8766 				   contents + rel->r_offset, value,
   8767 				   split16d_type,
   8768 				   htab->params->vle_reloc_fixup);
   8769 	    else if (r_type == R_PPC_VLE_SDAREL_HI16A)
   8770 	      {
   8771 		value = value >> 16;
   8772 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8773 				     contents + rel->r_offset, value,
   8774 				     split16a_type,
   8775 				     htab->params->vle_reloc_fixup);
   8776 	      }
   8777 	    else if (r_type == R_PPC_VLE_SDAREL_HI16D)
   8778 	      {
   8779 		value = value >> 16;
   8780 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8781 				     contents + rel->r_offset, value,
   8782 				     split16d_type,
   8783 				     htab->params->vle_reloc_fixup);
   8784 	      }
   8785 	    else if (r_type == R_PPC_VLE_SDAREL_HA16A)
   8786 	      {
   8787 		value = (value + 0x8000) >> 16;
   8788 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8789 				     contents + rel->r_offset, value,
   8790 				     split16a_type,
   8791 				     htab->params->vle_reloc_fixup);
   8792 	      }
   8793 	    else if (r_type == R_PPC_VLE_SDAREL_HA16D)
   8794 	      {
   8795 		value = (value + 0x8000) >> 16;
   8796 		ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
   8797 				     contents + rel->r_offset, value,
   8798 				     split16d_type,
   8799 				     htab->params->vle_reloc_fixup);
   8800 	      }
   8801 	  }
   8802 	  goto copy_reloc;
   8803 
   8804 	case R_PPC_VLE_ADDR20:
   8805 	  ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
   8806 	  continue;
   8807 
   8808 	  /* Relocate against the beginning of the section.  */
   8809 	case R_PPC_SECTOFF:
   8810 	case R_PPC_SECTOFF_LO:
   8811 	case R_PPC_SECTOFF_HI:
   8812 	case R_PPC_SECTOFF_HA:
   8813 	  if (sec == NULL || sec->output_section == NULL)
   8814 	    {
   8815 	      unresolved_reloc = TRUE;
   8816 	      break;
   8817 	    }
   8818 	  addend -= sec->output_section->vma;
   8819 	  break;
   8820 
   8821 	  /* Negative relocations.  */
   8822 	case R_PPC_EMB_NADDR32:
   8823 	case R_PPC_EMB_NADDR16:
   8824 	case R_PPC_EMB_NADDR16_LO:
   8825 	case R_PPC_EMB_NADDR16_HI:
   8826 	case R_PPC_EMB_NADDR16_HA:
   8827 	  addend -= 2 * relocation;
   8828 	  break;
   8829 
   8830 	case R_PPC_COPY:
   8831 	case R_PPC_GLOB_DAT:
   8832 	case R_PPC_JMP_SLOT:
   8833 	case R_PPC_RELATIVE:
   8834 	case R_PPC_IRELATIVE:
   8835 	case R_PPC_PLT32:
   8836 	case R_PPC_PLTREL32:
   8837 	case R_PPC_ADDR30:
   8838 	case R_PPC_EMB_RELSEC16:
   8839 	case R_PPC_EMB_RELST_LO:
   8840 	case R_PPC_EMB_RELST_HI:
   8841 	case R_PPC_EMB_RELST_HA:
   8842 	case R_PPC_EMB_BIT_FLD:
   8843 	  /* xgettext:c-format */
   8844 	  _bfd_error_handler (_("%pB: %s unsupported"),
   8845 			      input_bfd, howto->name);
   8846 
   8847 	  bfd_set_error (bfd_error_invalid_operation);
   8848 	  ret = FALSE;
   8849 	  goto copy_reloc;
   8850 	}
   8851 
   8852       switch (r_type)
   8853 	{
   8854 	default:
   8855 	  break;
   8856 
   8857 	case R_PPC_PLTCALL:
   8858 	  if (unresolved_reloc)
   8859 	    {
   8860 	      bfd_byte *p = contents + rel->r_offset;
   8861 	      unsigned int insn = bfd_get_32 (input_bfd, p);
   8862 	      insn &= 1;
   8863 	      bfd_put_32 (input_bfd, B | insn, p);
   8864 	      unresolved_reloc = save_unresolved_reloc;
   8865 	      r_type = R_PPC_REL24;
   8866 	      howto = ppc_elf_howto_table[r_type];
   8867 	    }
   8868 	  else if (htab->plt_type != PLT_NEW)
   8869 	    info->callbacks->einfo
   8870 	      (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
   8871 	       input_bfd, input_section, rel->r_offset,
   8872 	       howto->name);
   8873 	  break;
   8874 
   8875 	case R_PPC_PLTSEQ:
   8876 	case R_PPC_PLT16_HA:
   8877 	case R_PPC_PLT16_LO:
   8878 	  if (unresolved_reloc)
   8879 	    {
   8880 	      bfd_byte *p = contents + (rel->r_offset & ~3);
   8881 	      bfd_put_32 (input_bfd, NOP, p);
   8882 	      unresolved_reloc = FALSE;
   8883 	      r_type = R_PPC_NONE;
   8884 	      howto = ppc_elf_howto_table[r_type];
   8885 	    }
   8886 	  else if (htab->plt_type != PLT_NEW)
   8887 	    info->callbacks->einfo
   8888 	      (_("%X%P: %H: %s relocation unsupported for bss-plt\n"),
   8889 	       input_bfd, input_section, rel->r_offset,
   8890 	       howto->name);
   8891 	  break;
   8892 	}
   8893 
   8894       /* Do any further special processing.  */
   8895       switch (r_type)
   8896 	{
   8897 	default:
   8898 	  break;
   8899 
   8900 	case R_PPC_ADDR16_HA:
   8901 	case R_PPC_REL16_HA:
   8902 	case R_PPC_REL16DX_HA:
   8903 	case R_PPC_SECTOFF_HA:
   8904 	case R_PPC_TPREL16_HA:
   8905 	case R_PPC_DTPREL16_HA:
   8906 	case R_PPC_EMB_NADDR16_HA:
   8907 	case R_PPC_EMB_RELST_HA:
   8908 	  /* It's just possible that this symbol is a weak symbol
   8909 	     that's not actually defined anywhere.  In that case,
   8910 	     'sec' would be NULL, and we should leave the symbol
   8911 	     alone (it will be set to zero elsewhere in the link).  */
   8912 	  if (sec == NULL)
   8913 	    break;
   8914 	  /* Fall through.  */
   8915 
   8916 	case R_PPC_PLT16_HA:
   8917 	case R_PPC_GOT16_HA:
   8918 	case R_PPC_GOT_TLSGD16_HA:
   8919 	case R_PPC_GOT_TLSLD16_HA:
   8920 	case R_PPC_GOT_TPREL16_HA:
   8921 	case R_PPC_GOT_DTPREL16_HA:
   8922 	  /* Add 0x10000 if sign bit in 0:15 is set.
   8923 	     Bits 0:15 are not used.  */
   8924 	  addend += 0x8000;
   8925 	  break;
   8926 
   8927 	case R_PPC_ADDR16:
   8928 	case R_PPC_ADDR16_LO:
   8929 	case R_PPC_GOT16:
   8930 	case R_PPC_GOT16_LO:
   8931 	case R_PPC_SDAREL16:
   8932 	case R_PPC_SECTOFF:
   8933 	case R_PPC_SECTOFF_LO:
   8934 	case R_PPC_DTPREL16:
   8935 	case R_PPC_DTPREL16_LO:
   8936 	case R_PPC_TPREL16:
   8937 	case R_PPC_TPREL16_LO:
   8938 	case R_PPC_GOT_TLSGD16:
   8939 	case R_PPC_GOT_TLSGD16_LO:
   8940 	case R_PPC_GOT_TLSLD16:
   8941 	case R_PPC_GOT_TLSLD16_LO:
   8942 	case R_PPC_GOT_DTPREL16:
   8943 	case R_PPC_GOT_DTPREL16_LO:
   8944 	case R_PPC_GOT_TPREL16:
   8945 	case R_PPC_GOT_TPREL16_LO:
   8946 	  {
   8947 	    /* The 32-bit ABI lacks proper relocations to deal with
   8948 	       certain 64-bit instructions.  Prevent damage to bits
   8949 	       that make up part of the insn opcode.  */
   8950 	    unsigned int insn, mask, lobit;
   8951 
   8952 	    insn = bfd_get_32 (input_bfd,
   8953 			       contents + rel->r_offset - d_offset);
   8954 	    mask = 0;
   8955 	    if (is_insn_ds_form (insn))
   8956 	      mask = 3;
   8957 	    else if (is_insn_dq_form (insn))
   8958 	      mask = 15;
   8959 	    else
   8960 	      break;
   8961 	    relocation += addend;
   8962 	    addend = insn & mask;
   8963 	    lobit = mask & relocation;
   8964 	    if (lobit != 0)
   8965 	      {
   8966 		relocation ^= lobit;
   8967 		info->callbacks->einfo
   8968 		  /* xgettext:c-format */
   8969 		  (_("%H: error: %s against `%s' not a multiple of %u\n"),
   8970 		   input_bfd, input_section, rel->r_offset,
   8971 		   howto->name, sym_name, mask + 1);
   8972 		bfd_set_error (bfd_error_bad_value);
   8973 		ret = FALSE;
   8974 	      }
   8975 	  }
   8976 	  break;
   8977 	}
   8978 
   8979 #ifdef DEBUG
   8980       fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
   8981 	       "offset = %ld, addend = %ld\n",
   8982 	       howto->name,
   8983 	       (int) r_type,
   8984 	       sym_name,
   8985 	       r_symndx,
   8986 	       (long) rel->r_offset,
   8987 	       (long) addend);
   8988 #endif
   8989 
   8990       if (unresolved_reloc
   8991 	  && !((input_section->flags & SEC_DEBUGGING) != 0
   8992 	       && h->def_dynamic)
   8993 	  && _bfd_elf_section_offset (output_bfd, info, input_section,
   8994 				      rel->r_offset) != (bfd_vma) -1)
   8995 	{
   8996 	  info->callbacks->einfo
   8997 	    /* xgettext:c-format */
   8998 	    (_("%H: unresolvable %s relocation against symbol `%s'\n"),
   8999 	     input_bfd, input_section, rel->r_offset,
   9000 	     howto->name,
   9001 	     sym_name);
   9002 	  ret = FALSE;
   9003 	}
   9004 
   9005       /* 16-bit fields in insns mostly have signed values, but a
   9006 	 few insns have 16-bit unsigned values.  Really, we should
   9007 	 have different reloc types.  */
   9008       if (howto->complain_on_overflow != complain_overflow_dont
   9009 	  && howto->dst_mask == 0xffff
   9010 	  && (input_section->flags & SEC_CODE) != 0)
   9011 	{
   9012 	  enum complain_overflow complain = complain_overflow_signed;
   9013 
   9014 	  if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
   9015 	    {
   9016 	      unsigned int insn;
   9017 
   9018 	      insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
   9019 	      if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */)
   9020 		complain = complain_overflow_bitfield;
   9021 	      else if ((insn & (0x3fu << 26)) == 28u << 26 /* andi */
   9022 		       || (insn & (0x3fu << 26)) == 24u << 26 /* ori */
   9023 		       || (insn & (0x3fu << 26)) == 26u << 26 /* xori */)
   9024 		complain = complain_overflow_unsigned;
   9025 	    }
   9026 	  if (howto->complain_on_overflow != complain)
   9027 	    {
   9028 	      alt_howto = *howto;
   9029 	      alt_howto.complain_on_overflow = complain;
   9030 	      howto = &alt_howto;
   9031 	    }
   9032 	}
   9033 
   9034       if (r_type == R_PPC_REL16DX_HA)
   9035 	{
   9036 	  /* Split field reloc isn't handled by _bfd_final_link_relocate.  */
   9037 	  if (rel->r_offset + 4 > input_section->size)
   9038 	    r = bfd_reloc_outofrange;
   9039 	  else
   9040 	    {
   9041 	      unsigned int insn;
   9042 
   9043 	      relocation += addend;
   9044 	      relocation -= (rel->r_offset
   9045 			     + input_section->output_offset
   9046 			     + input_section->output_section->vma);
   9047 	      relocation >>= 16;
   9048 	      insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
   9049 	      insn &= ~0x1fffc1;
   9050 	      insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
   9051 	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
   9052 	      r = bfd_reloc_ok;
   9053 	    }
   9054 	}
   9055       else
   9056 	r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
   9057 				      rel->r_offset, relocation, addend);
   9058 
   9059       if (r != bfd_reloc_ok)
   9060 	{
   9061 	  if (r == bfd_reloc_overflow)
   9062 	    {
   9063 	    overflow:
   9064 	      /* On code like "if (foo) foo();" don't report overflow
   9065 		 on a branch to zero when foo is undefined.  */
   9066 	      if (!warned
   9067 		  && !(h != NULL
   9068 		       && (h->root.type == bfd_link_hash_undefweak
   9069 			   || h->root.type == bfd_link_hash_undefined)
   9070 		       && is_branch_reloc (r_type)))
   9071 		info->callbacks->reloc_overflow
   9072 		  (info, (h ? &h->root : NULL), sym_name, howto->name,
   9073 		   rel->r_addend, input_bfd, input_section, rel->r_offset);
   9074 	    }
   9075 	  else
   9076 	    {
   9077 	      info->callbacks->einfo
   9078 		/* xgettext:c-format */
   9079 		(_("%H: %s reloc against `%s': error %d\n"),
   9080 		 input_bfd, input_section, rel->r_offset,
   9081 		 howto->name, sym_name, (int) r);
   9082 	      ret = FALSE;
   9083 	    }
   9084 	}
   9085     copy_reloc:
   9086       if (wrel != rel)
   9087 	*wrel = *rel;
   9088     }
   9089 
   9090   if (wrel != rel)
   9091     {
   9092       Elf_Internal_Shdr *rel_hdr;
   9093       size_t deleted = rel - wrel;
   9094 
   9095       rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
   9096       rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
   9097       if (rel_hdr->sh_size == 0)
   9098 	{
   9099 	  /* It is too late to remove an empty reloc section.  Leave
   9100 	     one NONE reloc.
   9101 	     ??? What is wrong with an empty section???  */
   9102 	  rel_hdr->sh_size = rel_hdr->sh_entsize;
   9103 	  deleted -= 1;
   9104 	  wrel++;
   9105 	}
   9106       relend = wrel;
   9107       rel_hdr = _bfd_elf_single_rel_hdr (input_section);
   9108       rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
   9109       input_section->reloc_count -= deleted;
   9110     }
   9111 
   9112 #ifdef DEBUG
   9113   fprintf (stderr, "\n");
   9114 #endif
   9115 
   9116   if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
   9117       && input_section->size != input_section->rawsize
   9118       && (strcmp (input_section->output_section->name, ".init") == 0
   9119 	  || strcmp (input_section->output_section->name, ".fini") == 0))
   9120     {
   9121       /* Branch around the trampolines.  */
   9122       unsigned int insn = B + input_section->size - input_section->rawsize;
   9123       bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
   9124     }
   9125 
   9126   if (htab->params->ppc476_workaround
   9127       && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
   9128       && (!bfd_link_relocatable (info)
   9129 	  || (input_section->output_section->alignment_power
   9130 	      >= htab->params->pagesize_p2)))
   9131     {
   9132       bfd_vma start_addr, end_addr, addr;
   9133       bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   9134 
   9135       if (relax_info->workaround_size != 0)
   9136 	{
   9137 	  bfd_byte *p;
   9138 	  unsigned int n;
   9139 	  bfd_byte fill[4];
   9140 
   9141 	  bfd_put_32 (input_bfd, BA, fill);
   9142 	  p = contents + input_section->size - relax_info->workaround_size;
   9143 	  n = relax_info->workaround_size >> 2;
   9144 	  while (n--)
   9145 	    {
   9146 	      memcpy (p, fill, 4);
   9147 	      p += 4;
   9148 	    }
   9149 	}
   9150 
   9151       /* The idea is: Replace the last instruction on a page with a
   9152 	 branch to a patch area.  Put the insn there followed by a
   9153 	 branch back to the next page.  Complicated a little by
   9154 	 needing to handle moved conditional branches, and by not
   9155 	 wanting to touch data-in-text.  */
   9156 
   9157       start_addr = (input_section->output_section->vma
   9158 		    + input_section->output_offset);
   9159       end_addr = (start_addr + input_section->size
   9160 		  - relax_info->workaround_size);
   9161       for (addr = ((start_addr & -pagesize) + pagesize - 4);
   9162 	   addr < end_addr;
   9163 	   addr += pagesize)
   9164 	{
   9165 	  bfd_vma offset = addr - start_addr;
   9166 	  Elf_Internal_Rela *lo, *hi;
   9167 	  bfd_boolean is_data;
   9168 	  bfd_vma patch_off, patch_addr;
   9169 	  unsigned int insn;
   9170 
   9171 	  /* Do we have a data reloc at this offset?  If so, leave
   9172 	     the word alone.  */
   9173 	  is_data = FALSE;
   9174 	  lo = relocs;
   9175 	  hi = relend;
   9176 	  rel = NULL;
   9177 	  while (lo < hi)
   9178 	    {
   9179 	      rel = lo + (hi - lo) / 2;
   9180 	      if (rel->r_offset < offset)
   9181 		lo = rel + 1;
   9182 	      else if (rel->r_offset > offset + 3)
   9183 		hi = rel;
   9184 	      else
   9185 		{
   9186 		  switch (ELF32_R_TYPE (rel->r_info))
   9187 		    {
   9188 		    case R_PPC_ADDR32:
   9189 		    case R_PPC_UADDR32:
   9190 		    case R_PPC_REL32:
   9191 		    case R_PPC_ADDR30:
   9192 		      is_data = TRUE;
   9193 		      break;
   9194 		    default:
   9195 		      break;
   9196 		    }
   9197 		  break;
   9198 		}
   9199 	    }
   9200 	  if (is_data)
   9201 	    continue;
   9202 
   9203 	  /* Some instructions can be left alone too.  Unconditional
   9204 	     branches, except for bcctr with BO=0x14 (bctr, bctrl),
   9205 	     avoid the icache failure.
   9206 
   9207 	     The problem occurs due to prefetch across a page boundary
   9208 	     where stale instructions can be fetched from the next
   9209 	     page, and the mechanism for flushing these bad
   9210 	     instructions fails under certain circumstances.  The
   9211 	     unconditional branches:
   9212 	     1) Branch: b, bl, ba, bla,
   9213 	     2) Branch Conditional: bc, bca, bcl, bcla,
   9214 	     3) Branch Conditional to Link Register: bclr, bclrl,
   9215 	     where (2) and (3) have BO=0x14 making them unconditional,
   9216 	     prevent the bad prefetch because the prefetch itself is
   9217 	     affected by these instructions.  This happens even if the
   9218 	     instruction is not executed.
   9219 
   9220 	     A bctr example:
   9221 	     .
   9222 	     .	lis 9,new_page@ha
   9223 	     .	addi 9,9,new_page@l
   9224 	     .	mtctr 9
   9225 	     .	bctr
   9226 	     .	nop
   9227 	     .	nop
   9228 	     . new_page:
   9229 	     .
   9230 	     The bctr is not predicted taken due to ctr not being
   9231 	     ready, so prefetch continues on past the bctr into the
   9232 	     new page which might have stale instructions.  If they
   9233 	     fail to be flushed, then they will be executed after the
   9234 	     bctr executes.  Either of the following modifications
   9235 	     prevent the bad prefetch from happening in the first
   9236 	     place:
   9237 	     .
   9238 	     .	lis 9,new_page@ha	 lis 9,new_page@ha
   9239 	     .	addi 9,9,new_page@l	 addi 9,9,new_page@l
   9240 	     .	mtctr 9			 mtctr 9
   9241 	     .	bctr			 bctr
   9242 	     .	nop			 b somewhere_else
   9243 	     .	b somewhere_else	 nop
   9244 	     . new_page:		new_page:
   9245 	     .  */
   9246 	  insn = bfd_get_32 (input_bfd, contents + offset);
   9247 	  if ((insn & (0x3fu << 26)) == (18u << 26)	    /* b,bl,ba,bla */
   9248 	      || ((insn & (0x3fu << 26)) == (16u << 26)	    /* bc,bcl,bca,bcla*/
   9249 		  && (insn & (0x14 << 21)) == (0x14 << 21)) /*	 with BO=0x14 */
   9250 	      || ((insn & (0x3fu << 26)) == (19u << 26)
   9251 		  && (insn & (0x3ff << 1)) == (16u << 1)    /* bclr,bclrl */
   9252 		  && (insn & (0x14 << 21)) == (0x14 << 21)))/*	 with BO=0x14 */
   9253 	    continue;
   9254 
   9255 	  patch_addr = (start_addr + input_section->size
   9256 			- relax_info->workaround_size);
   9257 	  patch_addr = (patch_addr + 15) & -16;
   9258 	  patch_off = patch_addr - start_addr;
   9259 	  bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
   9260 
   9261 	  if (rel != NULL
   9262 	      && rel->r_offset >= offset
   9263 	      && rel->r_offset < offset + 4)
   9264 	    {
   9265 	      asection *sreloc;
   9266 
   9267 	      /* If the insn we are patching had a reloc, adjust the
   9268 		 reloc r_offset so that the reloc applies to the moved
   9269 		 location.  This matters for -r and --emit-relocs.  */
   9270 	      if (rel + 1 != relend)
   9271 		{
   9272 		  Elf_Internal_Rela tmp = *rel;
   9273 
   9274 		  /* Keep the relocs sorted by r_offset.  */
   9275 		  memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
   9276 		  relend[-1] = tmp;
   9277 		}
   9278 	      relend[-1].r_offset += patch_off - offset;
   9279 
   9280 	      /* Adjust REL16 addends too.  */
   9281 	      switch (ELF32_R_TYPE (relend[-1].r_info))
   9282 		{
   9283 		case R_PPC_REL16:
   9284 		case R_PPC_REL16_LO:
   9285 		case R_PPC_REL16_HI:
   9286 		case R_PPC_REL16_HA:
   9287 		  relend[-1].r_addend += patch_off - offset;
   9288 		  break;
   9289 		default:
   9290 		  break;
   9291 		}
   9292 
   9293 	      /* If we are building a PIE or shared library with
   9294 		 non-PIC objects, perhaps we had a dynamic reloc too?
   9295 		 If so, the dynamic reloc must move with the insn.  */
   9296 	      sreloc = elf_section_data (input_section)->sreloc;
   9297 	      if (sreloc != NULL)
   9298 		{
   9299 		  Elf32_External_Rela *slo, *shi, *srelend;
   9300 		  bfd_vma soffset;
   9301 
   9302 		  slo = (Elf32_External_Rela *) sreloc->contents;
   9303 		  shi = srelend = slo + sreloc->reloc_count;
   9304 		  soffset = (offset + input_section->output_section->vma
   9305 			     + input_section->output_offset);
   9306 		  while (slo < shi)
   9307 		    {
   9308 		      Elf32_External_Rela *srel = slo + (shi - slo) / 2;
   9309 		      bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
   9310 						&outrel);
   9311 		      if (outrel.r_offset < soffset)
   9312 			slo = srel + 1;
   9313 		      else if (outrel.r_offset > soffset + 3)
   9314 			shi = srel;
   9315 		      else
   9316 			{
   9317 			  if (srel + 1 != srelend)
   9318 			    {
   9319 			      memmove (srel, srel + 1,
   9320 				       (srelend - (srel + 1)) * sizeof (*srel));
   9321 			      srel = srelend - 1;
   9322 			    }
   9323 			  outrel.r_offset += patch_off - offset;
   9324 			  bfd_elf32_swap_reloca_out (output_bfd, &outrel,
   9325 						     (bfd_byte *) srel);
   9326 			  break;
   9327 			}
   9328 		    }
   9329 		}
   9330 	    }
   9331 	  else
   9332 	    rel = NULL;
   9333 
   9334 	  if ((insn & (0x3fu << 26)) == (16u << 26) /* bc */
   9335 	      && (insn & 2) == 0 /* relative */)
   9336 	    {
   9337 	      bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
   9338 
   9339 	      delta += offset - patch_off;
   9340 	      if (bfd_link_relocatable (info) && rel != NULL)
   9341 		delta = 0;
   9342 	      if (!bfd_link_relocatable (info) && rel != NULL)
   9343 		{
   9344 		  enum elf_ppc_reloc_type r_type;
   9345 
   9346 		  r_type = ELF32_R_TYPE (relend[-1].r_info);
   9347 		  if (r_type == R_PPC_REL14_BRTAKEN)
   9348 		    insn |= BRANCH_PREDICT_BIT;
   9349 		  else if (r_type == R_PPC_REL14_BRNTAKEN)
   9350 		    insn &= ~BRANCH_PREDICT_BIT;
   9351 		  else
   9352 		    BFD_ASSERT (r_type == R_PPC_REL14);
   9353 
   9354 		  if ((r_type == R_PPC_REL14_BRTAKEN
   9355 		       || r_type == R_PPC_REL14_BRNTAKEN)
   9356 		      && delta + 0x8000 < 0x10000
   9357 		      && (bfd_signed_vma) delta < 0)
   9358 		    insn ^= BRANCH_PREDICT_BIT;
   9359 		}
   9360 	      if (delta + 0x8000 < 0x10000)
   9361 		{
   9362 		  bfd_put_32 (input_bfd,
   9363 			      (insn & ~0xfffc) | (delta & 0xfffc),
   9364 			      contents + patch_off);
   9365 		  patch_off += 4;
   9366 		  bfd_put_32 (input_bfd,
   9367 			      B | ((offset + 4 - patch_off) & 0x3fffffc),
   9368 			      contents + patch_off);
   9369 		  patch_off += 4;
   9370 		}
   9371 	      else
   9372 		{
   9373 		  if (rel != NULL)
   9374 		    {
   9375 		      unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
   9376 
   9377 		      relend[-1].r_offset += 8;
   9378 		      relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
   9379 		    }
   9380 		  bfd_put_32 (input_bfd,
   9381 			      (insn & ~0xfffc) | 8,
   9382 			      contents + patch_off);
   9383 		  patch_off += 4;
   9384 		  bfd_put_32 (input_bfd,
   9385 			      B | ((offset + 4 - patch_off) & 0x3fffffc),
   9386 			      contents + patch_off);
   9387 		  patch_off += 4;
   9388 		  bfd_put_32 (input_bfd,
   9389 			      B | ((delta - 8) & 0x3fffffc),
   9390 			      contents + patch_off);
   9391 		  patch_off += 4;
   9392 		}
   9393 	    }
   9394 	  else
   9395 	    {
   9396 	      bfd_put_32 (input_bfd, insn, contents + patch_off);
   9397 	      patch_off += 4;
   9398 	      bfd_put_32 (input_bfd,
   9399 			  B | ((offset + 4 - patch_off) & 0x3fffffc),
   9400 			  contents + patch_off);
   9401 	      patch_off += 4;
   9402 	    }
   9403 	  BFD_ASSERT (patch_off <= input_section->size);
   9404 	  relax_info->workaround_size = input_section->size - patch_off;
   9405 	}
   9406     }
   9407 
   9408   return ret;
   9409 }
   9410 
   9411 /* Write out the PLT relocs and entries for H.  */
   9413 
   9414 static bfd_boolean
   9415 write_global_sym_plt (struct elf_link_hash_entry *h, void *inf)
   9416 {
   9417   struct bfd_link_info *info = (struct bfd_link_info *) inf;
   9418   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9419   struct plt_entry *ent;
   9420   bfd_boolean doneone;
   9421 
   9422   doneone = FALSE;
   9423   for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   9424     if (ent->plt.offset != (bfd_vma) -1)
   9425       {
   9426 	if (!doneone)
   9427 	  {
   9428 	    Elf_Internal_Rela rela;
   9429 	    bfd_byte *loc;
   9430 	    bfd_vma reloc_index;
   9431 	    asection *plt = htab->elf.splt;
   9432 	    asection *relplt = htab->elf.srelplt;
   9433 
   9434 	    if (htab->plt_type == PLT_NEW
   9435 		|| !htab->elf.dynamic_sections_created
   9436 		|| h->dynindx == -1)
   9437 	      reloc_index = ent->plt.offset / 4;
   9438 	    else
   9439 	      {
   9440 		reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
   9441 			       / htab->plt_slot_size);
   9442 		if (reloc_index > PLT_NUM_SINGLE_ENTRIES
   9443 		    && htab->plt_type == PLT_OLD)
   9444 		  reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
   9445 	      }
   9446 
   9447 	    /* This symbol has an entry in the procedure linkage table.
   9448 	       Set it up.  */
   9449 	    if (htab->plt_type == PLT_VXWORKS
   9450 		&& htab->elf.dynamic_sections_created
   9451 		&& h->dynindx != -1)
   9452 	      {
   9453 		bfd_vma got_offset;
   9454 		const bfd_vma *plt_entry;
   9455 
   9456 		/* The first three entries in .got.plt are reserved.  */
   9457 		got_offset = (reloc_index + 3) * 4;
   9458 
   9459 		/* Use the right PLT. */
   9460 		plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
   9461 			    : ppc_elf_vxworks_plt_entry;
   9462 
   9463 		/* Fill in the .plt on VxWorks.  */
   9464 		if (bfd_link_pic (info))
   9465 		  {
   9466 		    bfd_put_32 (info->output_bfd,
   9467 				plt_entry[0] | PPC_HA (got_offset),
   9468 				plt->contents + ent->plt.offset + 0);
   9469 		    bfd_put_32 (info->output_bfd,
   9470 				plt_entry[1] | PPC_LO (got_offset),
   9471 				plt->contents + ent->plt.offset + 4);
   9472 		  }
   9473 		else
   9474 		  {
   9475 		    bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
   9476 
   9477 		    bfd_put_32 (info->output_bfd,
   9478 				plt_entry[0] | PPC_HA (got_loc),
   9479 				plt->contents + ent->plt.offset + 0);
   9480 		    bfd_put_32 (info->output_bfd,
   9481 				plt_entry[1] | PPC_LO (got_loc),
   9482 				plt->contents + ent->plt.offset + 4);
   9483 		  }
   9484 
   9485 		bfd_put_32 (info->output_bfd, plt_entry[2],
   9486 			    plt->contents + ent->plt.offset + 8);
   9487 		bfd_put_32 (info->output_bfd, plt_entry[3],
   9488 			    plt->contents + ent->plt.offset + 12);
   9489 
   9490 		/* This instruction is an immediate load.  The value loaded is
   9491 		   the byte offset of the R_PPC_JMP_SLOT relocation from the
   9492 		   start of the .rela.plt section.  The value is stored in the
   9493 		   low-order 16 bits of the load instruction.  */
   9494 		/* NOTE: It appears that this is now an index rather than a
   9495 		   prescaled offset.  */
   9496 		bfd_put_32 (info->output_bfd,
   9497 			    plt_entry[4] | reloc_index,
   9498 			    plt->contents + ent->plt.offset + 16);
   9499 		/* This instruction is a PC-relative branch whose target is
   9500 		   the start of the PLT section.  The address of this branch
   9501 		   instruction is 20 bytes beyond the start of this PLT entry.
   9502 		   The address is encoded in bits 6-29, inclusive.  The value
   9503 		   stored is right-shifted by two bits, permitting a 26-bit
   9504 		   offset.  */
   9505 		bfd_put_32 (info->output_bfd,
   9506 			    (plt_entry[5]
   9507 			     | (-(ent->plt.offset + 20) & 0x03fffffc)),
   9508 			    plt->contents + ent->plt.offset + 20);
   9509 		bfd_put_32 (info->output_bfd, plt_entry[6],
   9510 			    plt->contents + ent->plt.offset + 24);
   9511 		bfd_put_32 (info->output_bfd, plt_entry[7],
   9512 			    plt->contents + ent->plt.offset + 28);
   9513 
   9514 		/* Fill in the GOT entry corresponding to this PLT slot with
   9515 		   the address immediately after the "bctr" instruction
   9516 		   in this PLT entry.  */
   9517 		bfd_put_32 (info->output_bfd, (plt->output_section->vma
   9518 					       + plt->output_offset
   9519 					       + ent->plt.offset + 16),
   9520 			    htab->elf.sgotplt->contents + got_offset);
   9521 
   9522 		if (!bfd_link_pic (info))
   9523 		  {
   9524 		    /* Fill in a couple of entries in .rela.plt.unloaded.  */
   9525 		    loc = htab->srelplt2->contents
   9526 		      + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
   9527 			  * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
   9528 			 * sizeof (Elf32_External_Rela));
   9529 
   9530 		    /* Provide the @ha relocation for the first instruction.  */
   9531 		    rela.r_offset = (plt->output_section->vma
   9532 				     + plt->output_offset
   9533 				     + ent->plt.offset + 2);
   9534 		    rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
   9535 						R_PPC_ADDR16_HA);
   9536 		    rela.r_addend = got_offset;
   9537 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9538 		    loc += sizeof (Elf32_External_Rela);
   9539 
   9540 		    /* Provide the @l relocation for the second instruction.  */
   9541 		    rela.r_offset = (plt->output_section->vma
   9542 				     + plt->output_offset
   9543 				     + ent->plt.offset + 6);
   9544 		    rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
   9545 						R_PPC_ADDR16_LO);
   9546 		    rela.r_addend = got_offset;
   9547 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9548 		    loc += sizeof (Elf32_External_Rela);
   9549 
   9550 		    /* Provide a relocation for the GOT entry corresponding to this
   9551 		       PLT slot.  Point it at the middle of the .plt entry.  */
   9552 		    rela.r_offset = (htab->elf.sgotplt->output_section->vma
   9553 				     + htab->elf.sgotplt->output_offset
   9554 				     + got_offset);
   9555 		    rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
   9556 						R_PPC_ADDR32);
   9557 		    rela.r_addend = ent->plt.offset + 16;
   9558 		    bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9559 		  }
   9560 
   9561 		/* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
   9562 		   In particular, the offset for the relocation is not the
   9563 		   address of the PLT entry for this function, as specified
   9564 		   by the ABI.  Instead, the offset is set to the address of
   9565 		   the GOT slot for this function.  See EABI 4.4.4.1.  */
   9566 		rela.r_offset = (htab->elf.sgotplt->output_section->vma
   9567 				 + htab->elf.sgotplt->output_offset
   9568 				 + got_offset);
   9569 		rela.r_addend = 0;
   9570 	      }
   9571 	    else
   9572 	      {
   9573 		rela.r_addend = 0;
   9574 		if (!htab->elf.dynamic_sections_created
   9575 		    || h->dynindx == -1)
   9576 		  {
   9577 		    if (h->type == STT_GNU_IFUNC)
   9578 		      {
   9579 			plt = htab->elf.iplt;
   9580 			relplt = htab->elf.irelplt;
   9581 		      }
   9582 		    else
   9583 		      {
   9584 			plt = htab->pltlocal;
   9585 			relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL;
   9586 		      }
   9587 		    if (h->def_regular
   9588 			&& (h->root.type == bfd_link_hash_defined
   9589 			    || h->root.type == bfd_link_hash_defweak))
   9590 		      rela.r_addend = SYM_VAL (h);
   9591 		  }
   9592 
   9593 		if (relplt == NULL)
   9594 		  {
   9595 		    loc = plt->contents + ent->plt.offset;
   9596 		    bfd_put_32 (info->output_bfd, rela.r_addend, loc);
   9597 		  }
   9598 		else
   9599 		  {
   9600 		    rela.r_offset = (plt->output_section->vma
   9601 				     + plt->output_offset
   9602 				     + ent->plt.offset);
   9603 
   9604 		    if (htab->plt_type == PLT_OLD
   9605 			|| !htab->elf.dynamic_sections_created
   9606 			|| h->dynindx == -1)
   9607 		      {
   9608 			/* We don't need to fill in the .plt.  The ppc dynamic
   9609 			   linker will fill it in.  */
   9610 		      }
   9611 		    else
   9612 		      {
   9613 			bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
   9614 				       + htab->glink->output_section->vma
   9615 				       + htab->glink->output_offset);
   9616 			bfd_put_32 (info->output_bfd, val,
   9617 				    plt->contents + ent->plt.offset);
   9618 		      }
   9619 		  }
   9620 	      }
   9621 
   9622 	    if (relplt != NULL)
   9623 	      {
   9624 		/* Fill in the entry in the .rela.plt section.  */
   9625 		if (!htab->elf.dynamic_sections_created
   9626 		    || h->dynindx == -1)
   9627 		  {
   9628 		    if (h->type == STT_GNU_IFUNC)
   9629 		      rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   9630 		    else
   9631 		      rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   9632 		    loc = relplt->contents + (relplt->reloc_count++
   9633 					      * sizeof (Elf32_External_Rela));
   9634 		    htab->local_ifunc_resolver = 1;
   9635 		  }
   9636 		else
   9637 		  {
   9638 		    rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
   9639 		    loc = relplt->contents + (reloc_index
   9640 					      * sizeof (Elf32_External_Rela));
   9641 		    if (h->type == STT_GNU_IFUNC && is_static_defined (h))
   9642 		      htab->maybe_local_ifunc_resolver = 1;
   9643 		  }
   9644 		bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9645 	      }
   9646 	    doneone = TRUE;
   9647 	  }
   9648 
   9649 	if (htab->plt_type == PLT_NEW
   9650 	    || !htab->elf.dynamic_sections_created
   9651 	    || h->dynindx == -1)
   9652 	  {
   9653 	    unsigned char *p;
   9654 	    asection *plt = htab->elf.splt;
   9655 
   9656 	    if (!htab->elf.dynamic_sections_created
   9657 		|| h->dynindx == -1)
   9658 	      {
   9659 		if (h->type == STT_GNU_IFUNC)
   9660 		  plt = htab->elf.iplt;
   9661 		else
   9662 		  break;
   9663 	      }
   9664 
   9665 	    p = (unsigned char *) htab->glink->contents + ent->glink_offset;
   9666 	    write_glink_stub (h, ent, plt, p, info);
   9667 
   9668 	    if (!bfd_link_pic (info))
   9669 	      /* We only need one non-PIC glink stub.  */
   9670 	      break;
   9671 	  }
   9672 	else
   9673 	  break;
   9674       }
   9675   return TRUE;
   9676 }
   9677 
   9678 /* Finish up PLT handling.  */
   9679 
   9680 bfd_boolean
   9681 ppc_finish_symbols (struct bfd_link_info *info)
   9682 {
   9683   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9684   bfd *ibfd;
   9685 
   9686   if (!htab)
   9687     return TRUE;
   9688 
   9689   elf_link_hash_traverse (&htab->elf, write_global_sym_plt, info);
   9690 
   9691   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   9692     {
   9693       bfd_vma *local_got, *end_local_got;
   9694       struct plt_entry **local_plt, **lplt, **end_local_plt;
   9695       Elf_Internal_Shdr *symtab_hdr;
   9696       bfd_size_type locsymcount;
   9697       Elf_Internal_Sym *local_syms = NULL;
   9698       struct plt_entry *ent;
   9699 
   9700       if (!is_ppc_elf (ibfd))
   9701 	continue;
   9702 
   9703       local_got = elf_local_got_offsets (ibfd);
   9704       if (!local_got)
   9705 	continue;
   9706 
   9707       symtab_hdr = &elf_symtab_hdr (ibfd);
   9708       locsymcount = symtab_hdr->sh_info;
   9709       end_local_got = local_got + locsymcount;
   9710       local_plt = (struct plt_entry **) end_local_got;
   9711       end_local_plt = local_plt + locsymcount;
   9712       for (lplt = local_plt; lplt < end_local_plt; ++lplt)
   9713 	for (ent = *lplt; ent != NULL; ent = ent->next)
   9714 	  {
   9715 	    if (ent->plt.offset != (bfd_vma) -1)
   9716 	      {
   9717 		Elf_Internal_Sym *sym;
   9718 		asection *sym_sec;
   9719 		asection *plt, *relplt;
   9720 		bfd_byte *loc;
   9721 		bfd_vma val;
   9722 		Elf_Internal_Rela rela;
   9723 		unsigned char *p;
   9724 
   9725 		if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms,
   9726 				lplt - local_plt, ibfd))
   9727 		  {
   9728 		    if (local_syms != NULL
   9729 			&& symtab_hdr->contents != (unsigned char *) local_syms)
   9730 		      free (local_syms);
   9731 		    return FALSE;
   9732 		  }
   9733 
   9734 		val = sym->st_value;
   9735 		if (sym_sec != NULL && sym_sec->output_section != NULL)
   9736 		  val += sym_sec->output_offset + sym_sec->output_section->vma;
   9737 
   9738 		if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   9739 		  {
   9740 		    htab->local_ifunc_resolver = 1;
   9741 		    plt = htab->elf.iplt;
   9742 		    relplt = htab->elf.irelplt;
   9743 		    rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
   9744 		  }
   9745 		else
   9746 		  {
   9747 		    plt = htab->pltlocal;
   9748 		    if (bfd_link_pic (info))
   9749 		      {
   9750 			relplt = htab->relpltlocal;
   9751 			rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
   9752 		      }
   9753 		    else
   9754 		      {
   9755 			loc = plt->contents + ent->plt.offset;
   9756 			bfd_put_32 (info->output_bfd, val, loc);
   9757 			continue;
   9758 		      }
   9759 		  }
   9760 
   9761 		rela.r_offset = (ent->plt.offset
   9762 				 + plt->output_offset
   9763 				 + plt->output_section->vma);
   9764 		rela.r_addend = val;
   9765 		loc = relplt->contents + (relplt->reloc_count++
   9766 					  * sizeof (Elf32_External_Rela));
   9767 		bfd_elf32_swap_reloca_out (info->output_bfd, &rela, loc);
   9768 
   9769 		p = (unsigned char *) htab->glink->contents + ent->glink_offset;
   9770 		write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
   9771 	      }
   9772 	  }
   9773 
   9774       if (local_syms != NULL
   9775 	  && symtab_hdr->contents != (unsigned char *) local_syms)
   9776 	{
   9777 	  if (!info->keep_memory)
   9778 	    free (local_syms);
   9779 	  else
   9780 	    symtab_hdr->contents = (unsigned char *) local_syms;
   9781 	}
   9782     }
   9783   return TRUE;
   9784 }
   9785 
   9786 /* Finish up dynamic symbol handling.  We set the contents of various
   9787    dynamic sections here.  */
   9788 
   9789 static bfd_boolean
   9790 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
   9791 			       struct bfd_link_info *info,
   9792 			       struct elf_link_hash_entry *h,
   9793 			       Elf_Internal_Sym *sym)
   9794 {
   9795   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9796   struct plt_entry *ent;
   9797 
   9798 #ifdef DEBUG
   9799   fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
   9800 	   h->root.root.string);
   9801 #endif
   9802 
   9803   if (!h->def_regular
   9804       || (h->type == STT_GNU_IFUNC && !bfd_link_pic (info)))
   9805     for (ent = h->plt.plist; ent != NULL; ent = ent->next)
   9806       if (ent->plt.offset != (bfd_vma) -1)
   9807 	{
   9808 	  if (!h->def_regular)
   9809 	    {
   9810 	      /* Mark the symbol as undefined, rather than as
   9811 		 defined in the .plt section.  Leave the value if
   9812 		 there were any relocations where pointer equality
   9813 		 matters (this is a clue for the dynamic linker, to
   9814 		 make function pointer comparisons work between an
   9815 		 application and shared library), otherwise set it
   9816 		 to zero.  */
   9817 	      sym->st_shndx = SHN_UNDEF;
   9818 	      if (!h->pointer_equality_needed)
   9819 		sym->st_value = 0;
   9820 	      else if (!h->ref_regular_nonweak)
   9821 		{
   9822 		  /* This breaks function pointer comparisons, but
   9823 		     that is better than breaking tests for a NULL
   9824 		     function pointer.  */
   9825 		  sym->st_value = 0;
   9826 		}
   9827 	    }
   9828 	  else
   9829 	    {
   9830 	      /* Set the value of ifunc symbols in a non-pie
   9831 		 executable to the glink entry.  This is to avoid
   9832 		 text relocations.  We can't do this for ifunc in
   9833 		 allocate_dynrelocs, as we do for normal dynamic
   9834 		 function symbols with plt entries, because we need
   9835 		 to keep the original value around for the ifunc
   9836 		 relocation.  */
   9837 	      sym->st_shndx
   9838 		= (_bfd_elf_section_from_bfd_section
   9839 		   (info->output_bfd, htab->glink->output_section));
   9840 	      sym->st_value = (ent->glink_offset
   9841 			       + htab->glink->output_offset
   9842 			       + htab->glink->output_section->vma);
   9843 	    }
   9844 	  break;
   9845 	}
   9846 
   9847   if (h->needs_copy)
   9848     {
   9849       asection *s;
   9850       Elf_Internal_Rela rela;
   9851       bfd_byte *loc;
   9852 
   9853       /* This symbols needs a copy reloc.  Set it up.  */
   9854 
   9855 #ifdef DEBUG
   9856       fprintf (stderr, ", copy");
   9857 #endif
   9858 
   9859       BFD_ASSERT (h->dynindx != -1);
   9860 
   9861       if (ppc_elf_hash_entry (h)->has_sda_refs)
   9862 	s = htab->relsbss;
   9863       else if (h->root.u.def.section == htab->elf.sdynrelro)
   9864 	s = htab->elf.sreldynrelro;
   9865       else
   9866 	s = htab->elf.srelbss;
   9867       BFD_ASSERT (s != NULL);
   9868 
   9869       rela.r_offset = SYM_VAL (h);
   9870       rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
   9871       rela.r_addend = 0;
   9872       loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
   9873       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   9874     }
   9875 
   9876 #ifdef DEBUG
   9877   fprintf (stderr, "\n");
   9878 #endif
   9879 
   9880   return TRUE;
   9881 }
   9882 
   9883 static enum elf_reloc_type_class
   9885 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
   9886 			  const asection *rel_sec,
   9887 			  const Elf_Internal_Rela *rela)
   9888 {
   9889   struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
   9890 
   9891   if (rel_sec == htab->elf.irelplt)
   9892     return reloc_class_ifunc;
   9893 
   9894   switch (ELF32_R_TYPE (rela->r_info))
   9895     {
   9896     case R_PPC_RELATIVE:
   9897       return reloc_class_relative;
   9898     case R_PPC_JMP_SLOT:
   9899       return reloc_class_plt;
   9900     case R_PPC_COPY:
   9901       return reloc_class_copy;
   9902     default:
   9903       return reloc_class_normal;
   9904     }
   9905 }
   9906 
   9907 /* Finish up the dynamic sections.  */
   9909 
   9910 static bfd_boolean
   9911 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
   9912 				 struct bfd_link_info *info)
   9913 {
   9914   asection *sdyn;
   9915   struct ppc_elf_link_hash_table *htab;
   9916   bfd_vma got;
   9917   bfd *dynobj;
   9918   bfd_boolean ret = TRUE;
   9919 
   9920 #ifdef DEBUG
   9921   fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
   9922 #endif
   9923 
   9924   htab = ppc_elf_hash_table (info);
   9925   dynobj = htab->elf.dynobj;
   9926   sdyn = bfd_get_linker_section (dynobj, ".dynamic");
   9927 
   9928   got = 0;
   9929   if (htab->elf.hgot != NULL)
   9930     got = SYM_VAL (htab->elf.hgot);
   9931 
   9932   if (htab->elf.dynamic_sections_created)
   9933     {
   9934       Elf32_External_Dyn *dyncon, *dynconend;
   9935 
   9936       BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
   9937 
   9938       dyncon = (Elf32_External_Dyn *) sdyn->contents;
   9939       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
   9940       for (; dyncon < dynconend; dyncon++)
   9941 	{
   9942 	  Elf_Internal_Dyn dyn;
   9943 	  asection *s;
   9944 
   9945 	  bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
   9946 
   9947 	  switch (dyn.d_tag)
   9948 	    {
   9949 	    case DT_PLTGOT:
   9950 	      if (htab->is_vxworks)
   9951 		s = htab->elf.sgotplt;
   9952 	      else
   9953 		s = htab->elf.splt;
   9954 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   9955 	      break;
   9956 
   9957 	    case DT_PLTRELSZ:
   9958 	      dyn.d_un.d_val = htab->elf.srelplt->size;
   9959 	      break;
   9960 
   9961 	    case DT_JMPREL:
   9962 	      s = htab->elf.srelplt;
   9963 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   9964 	      break;
   9965 
   9966 	    case DT_PPC_GOT:
   9967 	      dyn.d_un.d_ptr = got;
   9968 	      break;
   9969 
   9970 	    case DT_TEXTREL:
   9971 	      if (htab->local_ifunc_resolver)
   9972 		info->callbacks->einfo
   9973 		  (_("%X%P: text relocations and GNU indirect "
   9974 		     "functions will result in a segfault at runtime\n"));
   9975 	      else if (htab->maybe_local_ifunc_resolver)
   9976 		info->callbacks->einfo
   9977 		  (_("%P: warning: text relocations and GNU indirect "
   9978 		     "functions may result in a segfault at runtime\n"));
   9979 	      continue;
   9980 
   9981 	    default:
   9982 	      if (htab->is_vxworks
   9983 		  && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
   9984 		break;
   9985 	      continue;
   9986 	    }
   9987 
   9988 	  bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
   9989 	}
   9990     }
   9991 
   9992   if (htab->elf.sgot != NULL
   9993       && htab->elf.sgot->output_section != bfd_abs_section_ptr)
   9994     {
   9995       if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
   9996 	  || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
   9997 	{
   9998 	  unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
   9999 
   10000 	  p += htab->elf.hgot->root.u.def.value;
   10001 	  if (htab->plt_type == PLT_OLD)
   10002 	    {
   10003 	      /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
   10004 		 so that a function can easily find the address of
   10005 		 _GLOBAL_OFFSET_TABLE_.  */
   10006 	      BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
   10007 			  < htab->elf.hgot->root.u.def.section->size);
   10008 	      bfd_put_32 (output_bfd, 0x4e800021, p - 4);
   10009 	    }
   10010 
   10011 	  if (sdyn != NULL)
   10012 	    {
   10013 	      bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
   10014 	      BFD_ASSERT (htab->elf.hgot->root.u.def.value
   10015 			  < htab->elf.hgot->root.u.def.section->size);
   10016 	      bfd_put_32 (output_bfd, val, p);
   10017 	    }
   10018 	}
   10019       else
   10020 	{
   10021 	  /* xgettext:c-format */
   10022 	  _bfd_error_handler (_("%s not defined in linker created %pA"),
   10023 			      htab->elf.hgot->root.root.string,
   10024 			      (htab->elf.sgotplt != NULL
   10025 			       ? htab->elf.sgotplt : htab->elf.sgot));
   10026 	  bfd_set_error (bfd_error_bad_value);
   10027 	  ret = FALSE;
   10028 	}
   10029 
   10030       elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
   10031     }
   10032 
   10033   /* Fill in the first entry in the VxWorks procedure linkage table.  */
   10034   if (htab->is_vxworks
   10035       && htab->elf.splt != NULL
   10036       && htab->elf.splt->size != 0
   10037       && htab->elf.splt->output_section != bfd_abs_section_ptr)
   10038     {
   10039       asection *splt = htab->elf.splt;
   10040       /* Use the right PLT. */
   10041       const bfd_vma *plt_entry = (bfd_link_pic (info)
   10042 				  ? ppc_elf_vxworks_pic_plt0_entry
   10043 				  : ppc_elf_vxworks_plt0_entry);
   10044 
   10045       if (!bfd_link_pic (info))
   10046 	{
   10047 	  bfd_vma got_value = SYM_VAL (htab->elf.hgot);
   10048 
   10049 	  bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
   10050 		      splt->contents +  0);
   10051 	  bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
   10052 		      splt->contents +  4);
   10053 	}
   10054       else
   10055 	{
   10056 	  bfd_put_32 (output_bfd, plt_entry[0], splt->contents +  0);
   10057 	  bfd_put_32 (output_bfd, plt_entry[1], splt->contents +  4);
   10058 	}
   10059       bfd_put_32 (output_bfd, plt_entry[2], splt->contents +  8);
   10060       bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
   10061       bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
   10062       bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
   10063       bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
   10064       bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
   10065 
   10066       if (! bfd_link_pic (info))
   10067 	{
   10068 	  Elf_Internal_Rela rela;
   10069 	  bfd_byte *loc;
   10070 
   10071 	  loc = htab->srelplt2->contents;
   10072 
   10073 	  /* Output the @ha relocation for the first instruction.  */
   10074 	  rela.r_offset = (htab->elf.splt->output_section->vma
   10075 			   + htab->elf.splt->output_offset
   10076 			   + 2);
   10077 	  rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
   10078 	  rela.r_addend = 0;
   10079 	  bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   10080 	  loc += sizeof (Elf32_External_Rela);
   10081 
   10082 	  /* Output the @l relocation for the second instruction.  */
   10083 	  rela.r_offset = (htab->elf.splt->output_section->vma
   10084 			   + htab->elf.splt->output_offset
   10085 			   + 6);
   10086 	  rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
   10087 	  rela.r_addend = 0;
   10088 	  bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   10089 	  loc += sizeof (Elf32_External_Rela);
   10090 
   10091 	  /* Fix up the remaining relocations.  They may have the wrong
   10092 	     symbol index for _G_O_T_ or _P_L_T_ depending on the order
   10093 	     in which symbols were output.  */
   10094 	  while (loc < htab->srelplt2->contents + htab->srelplt2->size)
   10095 	    {
   10096 	      Elf_Internal_Rela rel;
   10097 
   10098 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10099 	      rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
   10100 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10101 	      loc += sizeof (Elf32_External_Rela);
   10102 
   10103 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10104 	      rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
   10105 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10106 	      loc += sizeof (Elf32_External_Rela);
   10107 
   10108 	      bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
   10109 	      rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
   10110 	      bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
   10111 	      loc += sizeof (Elf32_External_Rela);
   10112 	    }
   10113 	}
   10114     }
   10115 
   10116   if (htab->glink != NULL
   10117       && htab->glink->contents != NULL
   10118       && htab->elf.dynamic_sections_created)
   10119     {
   10120       unsigned char *p;
   10121       unsigned char *endp;
   10122       bfd_vma res0;
   10123 
   10124       /*
   10125        * PIC glink code is the following:
   10126        *
   10127        * # ith PLT code stub.
   10128        *   addis 11,30,(plt+(i-1)*4-got)@ha
   10129        *   lwz 11,(plt+(i-1)*4-got)@l(11)
   10130        *   mtctr 11
   10131        *   bctr
   10132        *
   10133        * # A table of branches, one for each plt entry.
   10134        * # The idea is that the plt call stub loads ctr and r11 with these
   10135        * # addresses, so (r11 - res_0) gives the plt index * 4.
   10136        * res_0:	b PLTresolve
   10137        * res_1:	b PLTresolve
   10138        * .
   10139        * # Some number of entries towards the end can be nops
   10140        * res_n_m3: nop
   10141        * res_n_m2: nop
   10142        * res_n_m1:
   10143        *
   10144        * PLTresolve:
   10145        *    addis 11,11,(1f-res_0)@ha
   10146        *    mflr 0
   10147        *    bcl 20,31,1f
   10148        * 1: addi 11,11,(1b-res_0)@l
   10149        *    mflr 12
   10150        *    mtlr 0
   10151        *    sub 11,11,12		# r11 = index * 4
   10152        *    addis 12,12,(got+4-1b)@ha
   10153        *    lwz 0,(got+4-1b)@l(12)	# got[1] address of dl_runtime_resolve
   10154        *    lwz 12,(got+8-1b)@l(12)	# got[2] contains the map address
   10155        *    mtctr 0
   10156        *    add 0,11,11
   10157        *    add 11,0,11			# r11 = index * 12 = reloc offset.
   10158        *    bctr
   10159        *
   10160        * Non-PIC glink code is a little simpler.
   10161        *
   10162        * # ith PLT code stub.
   10163        *   lis 11,(plt+(i-1)*4)@ha
   10164        *   lwz 11,(plt+(i-1)*4)@l(11)
   10165        *   mtctr 11
   10166        *   bctr
   10167        *
   10168        * The branch table is the same, then comes
   10169        *
   10170        * PLTresolve:
   10171        *    lis 12,(got+4)@ha
   10172        *    addis 11,11,(-res_0)@ha
   10173        *    lwz 0,(got+4)@l(12)		# got[1] address of dl_runtime_resolve
   10174        *    addi 11,11,(-res_0)@l	# r11 = index * 4
   10175        *    mtctr 0
   10176        *    add 0,11,11
   10177        *    lwz 12,(got+8)@l(12)	# got[2] contains the map address
   10178        *    add 11,0,11			# r11 = index * 12 = reloc offset.
   10179        *    bctr
   10180        */
   10181 
   10182       /* Build the branch table, one for each plt entry (less one),
   10183 	 and perhaps some padding.  */
   10184       p = htab->glink->contents;
   10185       p += htab->glink_pltresolve;
   10186       endp = htab->glink->contents;
   10187       endp += htab->glink->size - GLINK_PLTRESOLVE;
   10188       while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
   10189 	{
   10190 	  bfd_put_32 (output_bfd, B + endp - p, p);
   10191 	  p += 4;
   10192 	}
   10193       while (p < endp)
   10194 	{
   10195 	  bfd_put_32 (output_bfd, NOP, p);
   10196 	  p += 4;
   10197 	}
   10198 
   10199       res0 = (htab->glink_pltresolve
   10200 	      + htab->glink->output_section->vma
   10201 	      + htab->glink->output_offset);
   10202 
   10203       if (htab->params->ppc476_workaround)
   10204 	{
   10205 	  /* Ensure that a call stub at the end of a page doesn't
   10206 	     result in prefetch over the end of the page into the
   10207 	     glink branch table.  */
   10208 	  bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
   10209 	  bfd_vma page_addr;
   10210 	  bfd_vma glink_start = (htab->glink->output_section->vma
   10211 				 + htab->glink->output_offset);
   10212 
   10213 	  for (page_addr = res0 & -pagesize;
   10214 	       page_addr > glink_start;
   10215 	       page_addr -= pagesize)
   10216 	    {
   10217 	      /* We have a plt call stub that may need fixing.  */
   10218 	      bfd_byte *loc;
   10219 	      unsigned int insn;
   10220 
   10221 	      loc = htab->glink->contents + page_addr - 4 - glink_start;
   10222 	      insn = bfd_get_32 (output_bfd, loc);
   10223 	      if (insn == BCTR)
   10224 		{
   10225 		  /* By alignment, we know that there must be at least
   10226 		     one other call stub before this one.  */
   10227 		  insn = bfd_get_32 (output_bfd, loc - 16);
   10228 		  if (insn == BCTR)
   10229 		    bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
   10230 		  else
   10231 		    bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
   10232 		}
   10233 	    }
   10234 	}
   10235 
   10236       /* Last comes the PLTresolve stub.  */
   10237       endp = p + GLINK_PLTRESOLVE;
   10238       if (bfd_link_pic (info))
   10239 	{
   10240 	  bfd_vma bcl;
   10241 
   10242 	  bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
   10243 		 + htab->glink->output_section->vma
   10244 		 + htab->glink->output_offset);
   10245 
   10246 	  bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
   10247 	  p += 4;
   10248 	  bfd_put_32 (output_bfd, MFLR_0, p);
   10249 	  p += 4;
   10250 	  bfd_put_32 (output_bfd, BCL_20_31, p);
   10251 	  p += 4;
   10252 	  bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
   10253 	  p += 4;
   10254 	  bfd_put_32 (output_bfd, MFLR_12, p);
   10255 	  p += 4;
   10256 	  bfd_put_32 (output_bfd, MTLR_0, p);
   10257 	  p += 4;
   10258 	  bfd_put_32 (output_bfd, SUB_11_11_12, p);
   10259 	  p += 4;
   10260 	  bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
   10261 	  p += 4;
   10262 	  if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
   10263 	    {
   10264 	      bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
   10265 	      p += 4;
   10266 	      bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
   10267 	      p += 4;
   10268 	    }
   10269 	  else
   10270 	    {
   10271 	      bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
   10272 	      p += 4;
   10273 	      bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
   10274 	      p += 4;
   10275 	    }
   10276 	  bfd_put_32 (output_bfd, MTCTR_0, p);
   10277 	  p += 4;
   10278 	  bfd_put_32 (output_bfd, ADD_0_11_11, p);
   10279 	}
   10280       else
   10281 	{
   10282 	  bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
   10283 	  p += 4;
   10284 	  bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
   10285 	  p += 4;
   10286 	  if (PPC_HA (got + 4) == PPC_HA (got + 8))
   10287 	    bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
   10288 	  else
   10289 	    bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
   10290 	  p += 4;
   10291 	  bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
   10292 	  p += 4;
   10293 	  bfd_put_32 (output_bfd, MTCTR_0, p);
   10294 	  p += 4;
   10295 	  bfd_put_32 (output_bfd, ADD_0_11_11, p);
   10296 	  p += 4;
   10297 	  if (PPC_HA (got + 4) == PPC_HA (got + 8))
   10298 	    bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
   10299 	  else
   10300 	    bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
   10301 	}
   10302       p += 4;
   10303       bfd_put_32 (output_bfd, ADD_11_0_11, p);
   10304       p += 4;
   10305       bfd_put_32 (output_bfd, BCTR, p);
   10306       p += 4;
   10307       while (p < endp)
   10308 	{
   10309 	  bfd_put_32 (output_bfd,
   10310 		      htab->params->ppc476_workaround ? BA : NOP, p);
   10311 	  p += 4;
   10312 	}
   10313       BFD_ASSERT (p == endp);
   10314     }
   10315 
   10316   if (htab->glink_eh_frame != NULL
   10317       && htab->glink_eh_frame->contents != NULL)
   10318     {
   10319       unsigned char *p = htab->glink_eh_frame->contents;
   10320       bfd_vma val;
   10321 
   10322       p += sizeof (glink_eh_frame_cie);
   10323       /* FDE length.  */
   10324       p += 4;
   10325       /* CIE pointer.  */
   10326       p += 4;
   10327       /* Offset to .glink.  */
   10328       val = (htab->glink->output_section->vma
   10329 	     + htab->glink->output_offset);
   10330       val -= (htab->glink_eh_frame->output_section->vma
   10331 	      + htab->glink_eh_frame->output_offset);
   10332       val -= p - htab->glink_eh_frame->contents;
   10333       bfd_put_32 (htab->elf.dynobj, val, p);
   10334 
   10335       if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
   10336 	  && !_bfd_elf_write_section_eh_frame (output_bfd, info,
   10337 					       htab->glink_eh_frame,
   10338 					       htab->glink_eh_frame->contents))
   10339 	return FALSE;
   10340     }
   10341 
   10342   return ret;
   10343 }
   10344 
   10345 #define TARGET_LITTLE_SYM	powerpc_elf32_le_vec
   10347 #define TARGET_LITTLE_NAME	"elf32-powerpcle"
   10348 #define TARGET_BIG_SYM		powerpc_elf32_vec
   10349 #define TARGET_BIG_NAME		"elf32-powerpc"
   10350 #define ELF_ARCH		bfd_arch_powerpc
   10351 #define ELF_TARGET_ID		PPC32_ELF_DATA
   10352 #define ELF_MACHINE_CODE	EM_PPC
   10353 #define ELF_MAXPAGESIZE		0x10000
   10354 #define ELF_COMMONPAGESIZE	0x1000
   10355 #define ELF_RELROPAGESIZE	ELF_MAXPAGESIZE
   10356 #define elf_info_to_howto	ppc_elf_info_to_howto
   10357 
   10358 #ifdef  EM_CYGNUS_POWERPC
   10359 #define ELF_MACHINE_ALT1	EM_CYGNUS_POWERPC
   10360 #endif
   10361 
   10362 #ifdef EM_PPC_OLD
   10363 #define ELF_MACHINE_ALT2	EM_PPC_OLD
   10364 #endif
   10365 
   10366 #define elf_backend_plt_not_loaded	1
   10367 #define elf_backend_want_dynrelro	1
   10368 #define elf_backend_can_gc_sections	1
   10369 #define elf_backend_can_refcount	1
   10370 #define elf_backend_rela_normal		1
   10371 #define elf_backend_caches_rawsize	1
   10372 
   10373 #define bfd_elf32_mkobject			ppc_elf_mkobject
   10374 #define bfd_elf32_bfd_merge_private_bfd_data	ppc_elf_merge_private_bfd_data
   10375 #define bfd_elf32_bfd_relax_section		ppc_elf_relax_section
   10376 #define bfd_elf32_bfd_reloc_type_lookup		ppc_elf_reloc_type_lookup
   10377 #define bfd_elf32_bfd_reloc_name_lookup		ppc_elf_reloc_name_lookup
   10378 #define bfd_elf32_bfd_set_private_flags		ppc_elf_set_private_flags
   10379 #define bfd_elf32_bfd_link_hash_table_create	ppc_elf_link_hash_table_create
   10380 #define bfd_elf32_get_synthetic_symtab		ppc_elf_get_synthetic_symtab
   10381 
   10382 #define elf_backend_object_p			ppc_elf_object_p
   10383 #define elf_backend_gc_mark_hook		ppc_elf_gc_mark_hook
   10384 #define elf_backend_section_from_shdr		ppc_elf_section_from_shdr
   10385 #define elf_backend_relocate_section		ppc_elf_relocate_section
   10386 #define elf_backend_create_dynamic_sections	ppc_elf_create_dynamic_sections
   10387 #define elf_backend_check_relocs		ppc_elf_check_relocs
   10388 #define elf_backend_relocs_compatible		_bfd_elf_relocs_compatible
   10389 #define elf_backend_copy_indirect_symbol	ppc_elf_copy_indirect_symbol
   10390 #define elf_backend_adjust_dynamic_symbol	ppc_elf_adjust_dynamic_symbol
   10391 #define elf_backend_add_symbol_hook		ppc_elf_add_symbol_hook
   10392 #define elf_backend_size_dynamic_sections	ppc_elf_size_dynamic_sections
   10393 #define elf_backend_hash_symbol			ppc_elf_hash_symbol
   10394 #define elf_backend_finish_dynamic_symbol	ppc_elf_finish_dynamic_symbol
   10395 #define elf_backend_finish_dynamic_sections	ppc_elf_finish_dynamic_sections
   10396 #define elf_backend_fake_sections		ppc_elf_fake_sections
   10397 #define elf_backend_additional_program_headers	ppc_elf_additional_program_headers
   10398 #define elf_backend_modify_segment_map		ppc_elf_modify_segment_map
   10399 #define elf_backend_grok_prstatus		ppc_elf_grok_prstatus
   10400 #define elf_backend_grok_psinfo			ppc_elf_grok_psinfo
   10401 #define elf_backend_write_core_note		ppc_elf_write_core_note
   10402 #define elf_backend_reloc_type_class		ppc_elf_reloc_type_class
   10403 #define elf_backend_begin_write_processing	ppc_elf_begin_write_processing
   10404 #define elf_backend_final_write_processing	ppc_elf_final_write_processing
   10405 #define elf_backend_write_section		ppc_elf_write_section
   10406 #define elf_backend_get_sec_type_attr		ppc_elf_get_sec_type_attr
   10407 #define elf_backend_plt_sym_val			ppc_elf_plt_sym_val
   10408 #define elf_backend_action_discarded		ppc_elf_action_discarded
   10409 #define elf_backend_init_index_section		_bfd_elf_init_1_index_section
   10410 #define elf_backend_lookup_section_flags_hook	ppc_elf_lookup_section_flags
   10411 
   10412 #include "elf32-target.h"
   10413 
   10414 /* FreeBSD Target */
   10415 
   10416 #undef  TARGET_LITTLE_SYM
   10417 #undef  TARGET_LITTLE_NAME
   10418 
   10419 #undef  TARGET_BIG_SYM
   10420 #define TARGET_BIG_SYM  powerpc_elf32_fbsd_vec
   10421 #undef  TARGET_BIG_NAME
   10422 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
   10423 
   10424 #undef  ELF_OSABI
   10425 #define ELF_OSABI	ELFOSABI_FREEBSD
   10426 
   10427 #undef  elf32_bed
   10428 #define elf32_bed	elf32_powerpc_fbsd_bed
   10429 
   10430 #include "elf32-target.h"
   10431 
   10432 /* VxWorks Target */
   10433 
   10434 #undef TARGET_LITTLE_SYM
   10435 #undef TARGET_LITTLE_NAME
   10436 
   10437 #undef TARGET_BIG_SYM
   10438 #define TARGET_BIG_SYM		powerpc_elf32_vxworks_vec
   10439 #undef TARGET_BIG_NAME
   10440 #define TARGET_BIG_NAME		"elf32-powerpc-vxworks"
   10441 
   10442 #undef  ELF_OSABI
   10443 
   10444 /* VxWorks uses the elf default section flags for .plt.  */
   10445 static const struct bfd_elf_special_section *
   10446 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
   10447 {
   10448   if (sec->name == NULL)
   10449     return NULL;
   10450 
   10451   if (strcmp (sec->name, ".plt") == 0)
   10452     return _bfd_elf_get_sec_type_attr (abfd, sec);
   10453 
   10454   return ppc_elf_get_sec_type_attr (abfd, sec);
   10455 }
   10456 
   10457 /* Like ppc_elf_link_hash_table_create, but overrides
   10458    appropriately for VxWorks.  */
   10459 static struct bfd_link_hash_table *
   10460 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
   10461 {
   10462   struct bfd_link_hash_table *ret;
   10463 
   10464   ret = ppc_elf_link_hash_table_create (abfd);
   10465   if (ret)
   10466     {
   10467       struct ppc_elf_link_hash_table *htab
   10468 	= (struct ppc_elf_link_hash_table *)ret;
   10469       htab->is_vxworks = 1;
   10470       htab->plt_type = PLT_VXWORKS;
   10471       htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
   10472       htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
   10473       htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
   10474     }
   10475   return ret;
   10476 }
   10477 
   10478 /* Tweak magic VxWorks symbols as they are loaded.  */
   10479 static bfd_boolean
   10480 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
   10481 				 struct bfd_link_info *info,
   10482 				 Elf_Internal_Sym *sym,
   10483 				 const char **namep,
   10484 				 flagword *flagsp,
   10485 				 asection **secp,
   10486 				 bfd_vma *valp)
   10487 {
   10488   if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
   10489 				    valp))
   10490     return FALSE;
   10491 
   10492   return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
   10493 }
   10494 
   10495 static bfd_boolean
   10496 ppc_elf_vxworks_final_write_processing (bfd *abfd)
   10497 {
   10498   ppc_final_write_processing (abfd);
   10499   return elf_vxworks_final_write_processing (abfd);
   10500 }
   10501 
   10502 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
   10503    define it.  */
   10504 #undef elf_backend_want_plt_sym
   10505 #define elf_backend_want_plt_sym		1
   10506 #undef elf_backend_want_got_plt
   10507 #define elf_backend_want_got_plt		1
   10508 #undef elf_backend_got_symbol_offset
   10509 #define elf_backend_got_symbol_offset		0
   10510 #undef elf_backend_plt_not_loaded
   10511 #define elf_backend_plt_not_loaded		0
   10512 #undef elf_backend_plt_readonly
   10513 #define elf_backend_plt_readonly		1
   10514 #undef elf_backend_got_header_size
   10515 #define elf_backend_got_header_size		12
   10516 #undef elf_backend_dtrel_excludes_plt
   10517 #define elf_backend_dtrel_excludes_plt		1
   10518 
   10519 #undef bfd_elf32_get_synthetic_symtab
   10520 
   10521 #undef bfd_elf32_bfd_link_hash_table_create
   10522 #define bfd_elf32_bfd_link_hash_table_create \
   10523   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