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elf64-s390.c revision 1.6
      1  1.1  christos /* IBM S/390-specific support for 64-bit ELF
      2  1.6  christos    Copyright (C) 2000-2016 Free Software Foundation, Inc.
      3  1.1  christos    Contributed Martin Schwidefsky (schwidefsky (at) de.ibm.com).
      4  1.1  christos 
      5  1.1  christos    This file is part of BFD, the Binary File Descriptor library.
      6  1.1  christos 
      7  1.1  christos    This program is free software; you can redistribute it and/or modify
      8  1.1  christos    it under the terms of the GNU General Public License as published by
      9  1.1  christos    the Free Software Foundation; either version 3 of the License, or
     10  1.1  christos    (at your option) any later version.
     11  1.1  christos 
     12  1.1  christos    This program is distributed in the hope that it will be useful,
     13  1.1  christos    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  1.1  christos    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15  1.1  christos    GNU General Public License for more details.
     16  1.1  christos 
     17  1.1  christos    You should have received a copy of the GNU General Public License
     18  1.1  christos    along with this program; if not, write to the Free Software
     19  1.1  christos    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
     20  1.1  christos    02110-1301, USA.  */
     21  1.1  christos 
     22  1.1  christos #include "sysdep.h"
     23  1.1  christos #include "bfd.h"
     24  1.1  christos #include "bfdlink.h"
     25  1.1  christos #include "libbfd.h"
     26  1.1  christos #include "elf-bfd.h"
     27  1.1  christos #include "elf/s390.h"
     28  1.1  christos 
     29  1.1  christos /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
     30  1.1  christos    from smaller values.  Start with zero, widen, *then* decrement.  */
     31  1.1  christos #define MINUS_ONE      (((bfd_vma)0) - 1)
     32  1.1  christos 
     33  1.1  christos static bfd_reloc_status_type
     34  1.1  christos s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
     35  1.1  christos 		asection *, bfd *, char **);
     36  1.1  christos static bfd_reloc_status_type
     37  1.1  christos s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
     38  1.1  christos 		      asection *, bfd *, char **);
     39  1.1  christos 
     40  1.1  christos /* The relocation "howto" table.  */
     41  1.1  christos static reloc_howto_type elf_howto_table[] =
     42  1.1  christos {
     43  1.1  christos   HOWTO (R_390_NONE,		/* type */
     44  1.1  christos 	 0,			/* rightshift */
     45  1.5  christos 	 3,			/* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
     46  1.1  christos 	 0,			/* bitsize */
     47  1.1  christos 	 FALSE,			/* pc_relative */
     48  1.1  christos 	 0,			/* bitpos */
     49  1.1  christos 	 complain_overflow_dont, /* complain_on_overflow */
     50  1.1  christos 	 bfd_elf_generic_reloc, /* special_function */
     51  1.1  christos 	 "R_390_NONE",		/* name */
     52  1.1  christos 	 FALSE,			/* partial_inplace */
     53  1.1  christos 	 0,			/* src_mask */
     54  1.1  christos 	 0,			/* dst_mask */
     55  1.1  christos 	 FALSE),		/* pcrel_offset */
     56  1.1  christos 
     57  1.1  christos   HOWTO(R_390_8,         0, 0,  8, FALSE, 0, complain_overflow_bitfield,
     58  1.1  christos 	bfd_elf_generic_reloc, "R_390_8",        FALSE, 0,0x000000ff, FALSE),
     59  1.1  christos   HOWTO(R_390_12,        0, 1, 12, FALSE, 0, complain_overflow_dont,
     60  1.1  christos 	bfd_elf_generic_reloc, "R_390_12",       FALSE, 0,0x00000fff, FALSE),
     61  1.1  christos   HOWTO(R_390_16,        0, 1, 16, FALSE, 0, complain_overflow_bitfield,
     62  1.1  christos 	bfd_elf_generic_reloc, "R_390_16",       FALSE, 0,0x0000ffff, FALSE),
     63  1.1  christos   HOWTO(R_390_32,        0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     64  1.1  christos 	bfd_elf_generic_reloc, "R_390_32",       FALSE, 0,0xffffffff, FALSE),
     65  1.1  christos   HOWTO(R_390_PC32,	 0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     66  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC32",     FALSE, 0,0xffffffff, TRUE),
     67  1.1  christos   HOWTO(R_390_GOT12,	 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
     68  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT12",    FALSE, 0,0x00000fff, FALSE),
     69  1.1  christos   HOWTO(R_390_GOT32,	 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     70  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT32",    FALSE, 0,0xffffffff, FALSE),
     71  1.1  christos   HOWTO(R_390_PLT32,	 0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     72  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT32",    FALSE, 0,0xffffffff, TRUE),
     73  1.1  christos   HOWTO(R_390_COPY,      0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     74  1.1  christos 	bfd_elf_generic_reloc, "R_390_COPY",     FALSE, 0,MINUS_ONE,  FALSE),
     75  1.1  christos   HOWTO(R_390_GLOB_DAT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     76  1.1  christos 	bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE,  FALSE),
     77  1.1  christos   HOWTO(R_390_JMP_SLOT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     78  1.1  christos 	bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE,  FALSE),
     79  1.1  christos   HOWTO(R_390_RELATIVE,  0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
     80  1.1  christos 	bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE,  FALSE),
     81  1.1  christos   HOWTO(R_390_GOTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     82  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE,  FALSE),
     83  1.1  christos   HOWTO(R_390_GOTPC,     0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
     84  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPC",    FALSE, 0,MINUS_ONE,  TRUE),
     85  1.1  christos   HOWTO(R_390_GOT16,     0, 1, 16, FALSE, 0, complain_overflow_bitfield,
     86  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT16",    FALSE, 0,0x0000ffff, FALSE),
     87  1.1  christos   HOWTO(R_390_PC16,      0, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     88  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC16",     FALSE, 0,0x0000ffff, TRUE),
     89  1.1  christos   HOWTO(R_390_PC16DBL,   1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     90  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC16DBL",  FALSE, 0,0x0000ffff, TRUE),
     91  1.1  christos   HOWTO(R_390_PLT16DBL,  1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     92  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
     93  1.1  christos   HOWTO(R_390_PC32DBL,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     94  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC32DBL",  FALSE, 0,0xffffffff, TRUE),
     95  1.1  christos   HOWTO(R_390_PLT32DBL,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     96  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
     97  1.1  christos   HOWTO(R_390_GOTPCDBL,  1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     98  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE,  TRUE),
     99  1.1  christos   HOWTO(R_390_64,        0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    100  1.1  christos 	bfd_elf_generic_reloc, "R_390_64",       FALSE, 0,MINUS_ONE,  FALSE),
    101  1.1  christos   HOWTO(R_390_PC64,	 0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
    102  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC64",     FALSE, 0,MINUS_ONE,  TRUE),
    103  1.1  christos   HOWTO(R_390_GOT64,	 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    104  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT64",    FALSE, 0,MINUS_ONE,  FALSE),
    105  1.1  christos   HOWTO(R_390_PLT64,	 0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
    106  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT64",    FALSE, 0,MINUS_ONE,  TRUE),
    107  1.1  christos   HOWTO(R_390_GOTENT,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
    108  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTENT",   FALSE, 0,MINUS_ONE,  TRUE),
    109  1.1  christos   HOWTO(R_390_GOTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    110  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
    111  1.1  christos   HOWTO(R_390_GOTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    112  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
    113  1.1  christos   HOWTO(R_390_GOTPLT12,	 0, 1, 12, FALSE, 0, complain_overflow_dont,
    114  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
    115  1.1  christos   HOWTO(R_390_GOTPLT16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    116  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
    117  1.1  christos   HOWTO(R_390_GOTPLT32,	 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    118  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
    119  1.1  christos   HOWTO(R_390_GOTPLT64,	 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    120  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE,  FALSE),
    121  1.1  christos   HOWTO(R_390_GOTPLTENT, 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
    122  1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE,  TRUE),
    123  1.1  christos   HOWTO(R_390_PLTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    124  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
    125  1.1  christos   HOWTO(R_390_PLTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    126  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
    127  1.1  christos   HOWTO(R_390_PLTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    128  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
    129  1.1  christos   HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    130  1.1  christos 	s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
    131  1.1  christos   HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    132  1.1  christos 	s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
    133  1.1  christos   HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    134  1.1  christos 	s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
    135  1.1  christos   EMPTY_HOWTO (R_390_TLS_GD32),	/* Empty entry for R_390_TLS_GD32.  */
    136  1.1  christos   HOWTO(R_390_TLS_GD64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    137  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
    138  1.1  christos   HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
    139  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
    140  1.1  christos   EMPTY_HOWTO (R_390_TLS_GOTIE32),	/* Empty entry for R_390_TLS_GOTIE32.  */
    141  1.1  christos   HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    142  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
    143  1.1  christos   EMPTY_HOWTO (R_390_TLS_LDM32),	/* Empty entry for R_390_TLS_LDM32.  */
    144  1.1  christos   HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    145  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
    146  1.1  christos   EMPTY_HOWTO (R_390_TLS_IE32),	/* Empty entry for R_390_TLS_IE32.  */
    147  1.1  christos   HOWTO(R_390_TLS_IE64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    148  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
    149  1.1  christos   HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
    150  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
    151  1.1  christos   EMPTY_HOWTO (R_390_TLS_LE32),	/* Empty entry for R_390_TLS_LE32.  */
    152  1.1  christos   HOWTO(R_390_TLS_LE64,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    153  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
    154  1.1  christos   EMPTY_HOWTO (R_390_TLS_LDO32),	/* Empty entry for R_390_TLS_LDO32.  */
    155  1.1  christos   HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    156  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
    157  1.1  christos   HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    158  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
    159  1.1  christos   HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    160  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
    161  1.1  christos   HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    162  1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
    163  1.1  christos   HOWTO(R_390_20,        0, 2, 20, FALSE, 8, complain_overflow_dont,
    164  1.1  christos 	s390_elf_ldisp_reloc, "R_390_20",      FALSE, 0,0x0fffff00, FALSE),
    165  1.1  christos   HOWTO(R_390_GOT20,	 0, 2, 20, FALSE, 8, complain_overflow_dont,
    166  1.1  christos 	s390_elf_ldisp_reloc, "R_390_GOT20",   FALSE, 0,0x0fffff00, FALSE),
    167  1.1  christos   HOWTO(R_390_GOTPLT20,  0, 2, 20, FALSE, 8, complain_overflow_dont,
    168  1.1  christos 	s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
    169  1.1  christos   HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
    170  1.1  christos 	s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
    171  1.1  christos   HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    172  1.1  christos 	bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
    173  1.1  christos   HOWTO(R_390_PC12DBL,   1, 1, 12,  TRUE, 0, complain_overflow_bitfield,
    174  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC12DBL",  FALSE, 0,0x00000fff, TRUE),
    175  1.1  christos   HOWTO(R_390_PLT12DBL,  1, 1, 12,  TRUE, 0, complain_overflow_bitfield,
    176  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
    177  1.1  christos   HOWTO(R_390_PC24DBL,   1, 2, 24,  TRUE, 0, complain_overflow_bitfield,
    178  1.1  christos 	bfd_elf_generic_reloc, "R_390_PC24DBL",  FALSE, 0,0x00ffffff, TRUE),
    179  1.1  christos   HOWTO(R_390_PLT24DBL,  1, 2, 24,  TRUE, 0, complain_overflow_bitfield,
    180  1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
    181  1.1  christos };
    182  1.1  christos 
    183  1.1  christos /* GNU extension to record C++ vtable hierarchy.  */
    184  1.1  christos static reloc_howto_type elf64_s390_vtinherit_howto =
    185  1.1  christos   HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
    186  1.1  christos static reloc_howto_type elf64_s390_vtentry_howto =
    187  1.1  christos   HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
    188  1.1  christos 
    189  1.1  christos static reloc_howto_type *
    190  1.1  christos elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    191  1.1  christos 			    bfd_reloc_code_real_type code)
    192  1.1  christos {
    193  1.1  christos   switch (code)
    194  1.1  christos     {
    195  1.1  christos     case BFD_RELOC_NONE:
    196  1.1  christos       return &elf_howto_table[(int) R_390_NONE];
    197  1.1  christos     case BFD_RELOC_8:
    198  1.1  christos       return &elf_howto_table[(int) R_390_8];
    199  1.1  christos     case BFD_RELOC_390_12:
    200  1.1  christos       return &elf_howto_table[(int) R_390_12];
    201  1.1  christos     case BFD_RELOC_16:
    202  1.1  christos       return &elf_howto_table[(int) R_390_16];
    203  1.1  christos     case BFD_RELOC_32:
    204  1.1  christos       return &elf_howto_table[(int) R_390_32];
    205  1.1  christos     case BFD_RELOC_CTOR:
    206  1.1  christos       return &elf_howto_table[(int) R_390_32];
    207  1.1  christos     case BFD_RELOC_32_PCREL:
    208  1.1  christos       return &elf_howto_table[(int) R_390_PC32];
    209  1.1  christos     case BFD_RELOC_390_GOT12:
    210  1.1  christos       return &elf_howto_table[(int) R_390_GOT12];
    211  1.1  christos     case BFD_RELOC_32_GOT_PCREL:
    212  1.1  christos       return &elf_howto_table[(int) R_390_GOT32];
    213  1.1  christos     case BFD_RELOC_390_PLT32:
    214  1.1  christos       return &elf_howto_table[(int) R_390_PLT32];
    215  1.1  christos     case BFD_RELOC_390_COPY:
    216  1.1  christos       return &elf_howto_table[(int) R_390_COPY];
    217  1.1  christos     case BFD_RELOC_390_GLOB_DAT:
    218  1.1  christos       return &elf_howto_table[(int) R_390_GLOB_DAT];
    219  1.1  christos     case BFD_RELOC_390_JMP_SLOT:
    220  1.1  christos       return &elf_howto_table[(int) R_390_JMP_SLOT];
    221  1.1  christos     case BFD_RELOC_390_RELATIVE:
    222  1.1  christos       return &elf_howto_table[(int) R_390_RELATIVE];
    223  1.1  christos     case BFD_RELOC_32_GOTOFF:
    224  1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF32];
    225  1.1  christos     case BFD_RELOC_390_GOTPC:
    226  1.1  christos       return &elf_howto_table[(int) R_390_GOTPC];
    227  1.1  christos     case BFD_RELOC_390_GOT16:
    228  1.1  christos       return &elf_howto_table[(int) R_390_GOT16];
    229  1.1  christos     case BFD_RELOC_16_PCREL:
    230  1.1  christos       return &elf_howto_table[(int) R_390_PC16];
    231  1.1  christos     case BFD_RELOC_390_PC12DBL:
    232  1.1  christos       return &elf_howto_table[(int) R_390_PC12DBL];
    233  1.1  christos     case BFD_RELOC_390_PLT12DBL:
    234  1.1  christos       return &elf_howto_table[(int) R_390_PLT12DBL];
    235  1.1  christos     case BFD_RELOC_390_PC16DBL:
    236  1.1  christos       return &elf_howto_table[(int) R_390_PC16DBL];
    237  1.1  christos     case BFD_RELOC_390_PLT16DBL:
    238  1.1  christos       return &elf_howto_table[(int) R_390_PLT16DBL];
    239  1.1  christos     case BFD_RELOC_390_PC24DBL:
    240  1.1  christos       return &elf_howto_table[(int) R_390_PC24DBL];
    241  1.1  christos     case BFD_RELOC_390_PLT24DBL:
    242  1.1  christos       return &elf_howto_table[(int) R_390_PLT24DBL];
    243  1.1  christos     case BFD_RELOC_390_PC32DBL:
    244  1.1  christos       return &elf_howto_table[(int) R_390_PC32DBL];
    245  1.1  christos     case BFD_RELOC_390_PLT32DBL:
    246  1.1  christos       return &elf_howto_table[(int) R_390_PLT32DBL];
    247  1.1  christos     case BFD_RELOC_390_GOTPCDBL:
    248  1.1  christos       return &elf_howto_table[(int) R_390_GOTPCDBL];
    249  1.1  christos     case BFD_RELOC_64:
    250  1.1  christos       return &elf_howto_table[(int) R_390_64];
    251  1.1  christos     case BFD_RELOC_64_PCREL:
    252  1.1  christos       return &elf_howto_table[(int) R_390_PC64];
    253  1.1  christos     case BFD_RELOC_390_GOT64:
    254  1.1  christos       return &elf_howto_table[(int) R_390_GOT64];
    255  1.1  christos     case BFD_RELOC_390_PLT64:
    256  1.1  christos       return &elf_howto_table[(int) R_390_PLT64];
    257  1.1  christos     case BFD_RELOC_390_GOTENT:
    258  1.1  christos       return &elf_howto_table[(int) R_390_GOTENT];
    259  1.1  christos     case BFD_RELOC_16_GOTOFF:
    260  1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF16];
    261  1.1  christos     case BFD_RELOC_390_GOTOFF64:
    262  1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF64];
    263  1.1  christos     case BFD_RELOC_390_GOTPLT12:
    264  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT12];
    265  1.1  christos     case BFD_RELOC_390_GOTPLT16:
    266  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT16];
    267  1.1  christos     case BFD_RELOC_390_GOTPLT32:
    268  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT32];
    269  1.1  christos     case BFD_RELOC_390_GOTPLT64:
    270  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT64];
    271  1.1  christos     case BFD_RELOC_390_GOTPLTENT:
    272  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLTENT];
    273  1.1  christos     case BFD_RELOC_390_PLTOFF16:
    274  1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF16];
    275  1.1  christos     case BFD_RELOC_390_PLTOFF32:
    276  1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF32];
    277  1.1  christos     case BFD_RELOC_390_PLTOFF64:
    278  1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF64];
    279  1.1  christos     case BFD_RELOC_390_TLS_LOAD:
    280  1.1  christos       return &elf_howto_table[(int) R_390_TLS_LOAD];
    281  1.1  christos     case BFD_RELOC_390_TLS_GDCALL:
    282  1.1  christos       return &elf_howto_table[(int) R_390_TLS_GDCALL];
    283  1.1  christos     case BFD_RELOC_390_TLS_LDCALL:
    284  1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDCALL];
    285  1.1  christos     case BFD_RELOC_390_TLS_GD64:
    286  1.1  christos       return &elf_howto_table[(int) R_390_TLS_GD64];
    287  1.1  christos     case BFD_RELOC_390_TLS_GOTIE12:
    288  1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE12];
    289  1.1  christos     case BFD_RELOC_390_TLS_GOTIE64:
    290  1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE64];
    291  1.1  christos     case BFD_RELOC_390_TLS_LDM64:
    292  1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDM64];
    293  1.1  christos     case BFD_RELOC_390_TLS_IE64:
    294  1.1  christos       return &elf_howto_table[(int) R_390_TLS_IE64];
    295  1.1  christos     case BFD_RELOC_390_TLS_IEENT:
    296  1.1  christos       return &elf_howto_table[(int) R_390_TLS_IEENT];
    297  1.1  christos     case BFD_RELOC_390_TLS_LE64:
    298  1.1  christos       return &elf_howto_table[(int) R_390_TLS_LE64];
    299  1.1  christos     case BFD_RELOC_390_TLS_LDO64:
    300  1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDO64];
    301  1.1  christos     case BFD_RELOC_390_TLS_DTPMOD:
    302  1.1  christos       return &elf_howto_table[(int) R_390_TLS_DTPMOD];
    303  1.1  christos     case BFD_RELOC_390_TLS_DTPOFF:
    304  1.1  christos       return &elf_howto_table[(int) R_390_TLS_DTPOFF];
    305  1.1  christos     case BFD_RELOC_390_TLS_TPOFF:
    306  1.1  christos       return &elf_howto_table[(int) R_390_TLS_TPOFF];
    307  1.1  christos     case BFD_RELOC_390_20:
    308  1.1  christos       return &elf_howto_table[(int) R_390_20];
    309  1.1  christos     case BFD_RELOC_390_GOT20:
    310  1.1  christos       return &elf_howto_table[(int) R_390_GOT20];
    311  1.1  christos     case BFD_RELOC_390_GOTPLT20:
    312  1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT20];
    313  1.1  christos     case BFD_RELOC_390_TLS_GOTIE20:
    314  1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE20];
    315  1.1  christos     case BFD_RELOC_390_IRELATIVE:
    316  1.1  christos       return &elf_howto_table[(int) R_390_IRELATIVE];
    317  1.1  christos     case BFD_RELOC_VTABLE_INHERIT:
    318  1.1  christos       return &elf64_s390_vtinherit_howto;
    319  1.1  christos     case BFD_RELOC_VTABLE_ENTRY:
    320  1.1  christos       return &elf64_s390_vtentry_howto;
    321  1.1  christos     default:
    322  1.1  christos       break;
    323  1.1  christos     }
    324  1.1  christos   return 0;
    325  1.1  christos }
    326  1.1  christos 
    327  1.1  christos static reloc_howto_type *
    328  1.1  christos elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    329  1.1  christos 			    const char *r_name)
    330  1.1  christos {
    331  1.1  christos   unsigned int i;
    332  1.1  christos 
    333  1.1  christos   for (i = 0;
    334  1.1  christos        i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
    335  1.1  christos        i++)
    336  1.1  christos     if (elf_howto_table[i].name != NULL
    337  1.1  christos 	&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
    338  1.1  christos       return &elf_howto_table[i];
    339  1.1  christos 
    340  1.6  christos   if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
    341  1.6  christos     return &elf64_s390_vtinherit_howto;
    342  1.6  christos   if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
    343  1.6  christos     return &elf64_s390_vtentry_howto;
    344  1.1  christos 
    345  1.1  christos   return NULL;
    346  1.1  christos }
    347  1.1  christos 
    348  1.1  christos /* We need to use ELF64_R_TYPE so we have our own copy of this function,
    349  1.1  christos    and elf64-s390.c has its own copy.  */
    350  1.1  christos 
    351  1.1  christos static void
    352  1.1  christos elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
    353  1.1  christos 			arelent *cache_ptr,
    354  1.1  christos 			Elf_Internal_Rela *dst)
    355  1.1  christos {
    356  1.1  christos   unsigned int r_type = ELF64_R_TYPE(dst->r_info);
    357  1.1  christos   switch (r_type)
    358  1.1  christos     {
    359  1.1  christos     case R_390_GNU_VTINHERIT:
    360  1.1  christos       cache_ptr->howto = &elf64_s390_vtinherit_howto;
    361  1.1  christos       break;
    362  1.1  christos 
    363  1.1  christos     case R_390_GNU_VTENTRY:
    364  1.1  christos       cache_ptr->howto = &elf64_s390_vtentry_howto;
    365  1.1  christos       break;
    366  1.1  christos 
    367  1.1  christos     default:
    368  1.1  christos       if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
    369  1.1  christos 	{
    370  1.1  christos 	  (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
    371  1.1  christos 				 abfd, (int) r_type);
    372  1.1  christos 	  r_type = R_390_NONE;
    373  1.1  christos 	}
    374  1.1  christos       cache_ptr->howto = &elf_howto_table[r_type];
    375  1.1  christos     }
    376  1.1  christos }
    377  1.1  christos 
    378  1.1  christos /* A relocation function which doesn't do anything.  */
    379  1.1  christos static bfd_reloc_status_type
    380  1.1  christos s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
    381  1.1  christos 		arelent *reloc_entry,
    382  1.1  christos 		asymbol *symbol ATTRIBUTE_UNUSED,
    383  1.1  christos 		void * data ATTRIBUTE_UNUSED,
    384  1.1  christos 		asection *input_section,
    385  1.1  christos 		bfd *output_bfd,
    386  1.1  christos 		char **error_message ATTRIBUTE_UNUSED)
    387  1.1  christos {
    388  1.1  christos   if (output_bfd)
    389  1.1  christos     reloc_entry->address += input_section->output_offset;
    390  1.1  christos   return bfd_reloc_ok;
    391  1.1  christos }
    392  1.1  christos 
    393  1.1  christos /* Handle the large displacement relocs.  */
    394  1.1  christos static bfd_reloc_status_type
    395  1.1  christos s390_elf_ldisp_reloc (bfd *abfd,
    396  1.1  christos 		      arelent *reloc_entry,
    397  1.1  christos 		      asymbol *symbol,
    398  1.1  christos 		      void * data,
    399  1.1  christos 		      asection *input_section,
    400  1.1  christos 		      bfd *output_bfd,
    401  1.1  christos 		      char **error_message ATTRIBUTE_UNUSED)
    402  1.1  christos {
    403  1.1  christos   reloc_howto_type *howto = reloc_entry->howto;
    404  1.1  christos   bfd_vma relocation;
    405  1.1  christos   bfd_vma insn;
    406  1.1  christos 
    407  1.1  christos   if (output_bfd != (bfd *) NULL
    408  1.1  christos       && (symbol->flags & BSF_SECTION_SYM) == 0
    409  1.1  christos       && (! howto->partial_inplace
    410  1.1  christos 	  || reloc_entry->addend == 0))
    411  1.1  christos     {
    412  1.1  christos       reloc_entry->address += input_section->output_offset;
    413  1.1  christos       return bfd_reloc_ok;
    414  1.1  christos     }
    415  1.1  christos   if (output_bfd != NULL)
    416  1.1  christos     return bfd_reloc_continue;
    417  1.1  christos 
    418  1.1  christos   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    419  1.1  christos     return bfd_reloc_outofrange;
    420  1.1  christos 
    421  1.1  christos   relocation = (symbol->value
    422  1.1  christos 		+ symbol->section->output_section->vma
    423  1.1  christos 		+ symbol->section->output_offset);
    424  1.1  christos   relocation += reloc_entry->addend;
    425  1.1  christos   if (howto->pc_relative)
    426  1.1  christos     {
    427  1.1  christos       relocation -= (input_section->output_section->vma
    428  1.1  christos 		     + input_section->output_offset);
    429  1.1  christos       relocation -= reloc_entry->address;
    430  1.1  christos     }
    431  1.1  christos 
    432  1.1  christos   insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
    433  1.1  christos   insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
    434  1.1  christos   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
    435  1.1  christos 
    436  1.1  christos   if ((bfd_signed_vma) relocation < - 0x80000
    437  1.1  christos       || (bfd_signed_vma) relocation > 0x7ffff)
    438  1.1  christos     return bfd_reloc_overflow;
    439  1.1  christos   else
    440  1.1  christos     return bfd_reloc_ok;
    441  1.1  christos }
    442  1.1  christos 
    443  1.1  christos static bfd_boolean
    444  1.1  christos elf_s390_is_local_label_name (bfd *abfd, const char *name)
    445  1.1  christos {
    446  1.1  christos   if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
    447  1.1  christos     return TRUE;
    448  1.1  christos 
    449  1.1  christos   return _bfd_elf_is_local_label_name (abfd, name);
    450  1.1  christos }
    451  1.1  christos 
    452  1.1  christos /* Functions for the 390 ELF linker.  */
    453  1.1  christos 
    454  1.1  christos /* The name of the dynamic interpreter.  This is put in the .interp
    455  1.1  christos    section.  */
    456  1.1  christos 
    457  1.1  christos #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
    458  1.1  christos 
    459  1.1  christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
    460  1.1  christos    copying dynamic variables from a shared lib into an app's dynbss
    461  1.1  christos    section, and instead use a dynamic relocation to point into the
    462  1.1  christos    shared lib.  */
    463  1.1  christos #define ELIMINATE_COPY_RELOCS 1
    464  1.1  christos 
    465  1.1  christos /* The size in bytes of the first entry in the procedure linkage table.  */
    466  1.1  christos #define PLT_FIRST_ENTRY_SIZE 32
    467  1.1  christos /* The size in bytes of an entry in the procedure linkage table.  */
    468  1.1  christos #define PLT_ENTRY_SIZE 32
    469  1.1  christos 
    470  1.1  christos #define GOT_ENTRY_SIZE 8
    471  1.1  christos 
    472  1.1  christos #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
    473  1.1  christos 
    474  1.1  christos /* The first three entries in a procedure linkage table are reserved,
    475  1.1  christos    and the initial contents are unimportant (we zero them out).
    476  1.1  christos    Subsequent entries look like this.  See the SVR4 ABI 386
    477  1.1  christos    supplement to see how this works.  */
    478  1.1  christos 
    479  1.1  christos /* For the s390, simple addr offset can only be 0 - 4096.
    480  1.1  christos    To use the full 16777216 TB address space, several instructions
    481  1.1  christos    are needed to load an address in a register and execute
    482  1.1  christos    a branch( or just saving the address)
    483  1.1  christos 
    484  1.1  christos    Furthermore, only r 0 and 1 are free to use!!!  */
    485  1.1  christos 
    486  1.1  christos /* The first 3 words in the GOT are then reserved.
    487  1.1  christos    Word 0 is the address of the dynamic table.
    488  1.1  christos    Word 1 is a pointer to a structure describing the object
    489  1.1  christos    Word 2 is used to point to the loader entry address.
    490  1.1  christos 
    491  1.1  christos    The code for PLT entries looks like this:
    492  1.1  christos 
    493  1.1  christos    The GOT holds the address in the PLT to be executed.
    494  1.1  christos    The loader then gets:
    495  1.6  christos    48(15) =  Pointer to the structure describing the object.
    496  1.6  christos    56(15) =  Offset in symbol table
    497  1.1  christos    The loader  must  then find the module where the function is
    498  1.1  christos    and insert the address in the GOT.
    499  1.1  christos 
    500  1.1  christos    PLT1: LARL 1,<fn>@GOTENT # 6 bytes  Load address of GOT entry in r1
    501  1.1  christos          LG   1,0(1)      # 6 bytes  Load address from GOT in r1
    502  1.1  christos          BCR  15,1        # 2 bytes  Jump to address
    503  1.1  christos    RET1: BASR 1,0         # 2 bytes  Return from GOT 1st time
    504  1.1  christos          LGF  1,12(1)     # 6 bytes  Load offset in symbl table in r1
    505  1.1  christos          BRCL 15,-x       # 6 bytes  Jump to start of PLT
    506  1.1  christos          .long ?          # 4 bytes  offset into .rela.plt
    507  1.1  christos 
    508  1.1  christos    Total = 32 bytes per PLT entry
    509  1.1  christos    Fixup at offset 2: relative address to GOT entry
    510  1.1  christos    Fixup at offset 22: relative branch to PLT0
    511  1.1  christos    Fixup at offset 28: 32 bit offset into .rela.plt
    512  1.1  christos 
    513  1.1  christos    A 32 bit offset into the symbol table is enough. It allows for
    514  1.1  christos    .rela.plt sections up to a size of 2 gigabyte.  A single dynamic
    515  1.1  christos    object (the main program, any shared library) is limited to 4GB in
    516  1.1  christos    size.  Having a .rela.plt of 2GB would already make the .plt
    517  1.1  christos    section bigger than 8GB.  */
    518  1.1  christos 
    519  1.1  christos static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
    520  1.1  christos   {
    521  1.1  christos     0xc0, 0x10, 0x00, 0x00, 0x00, 0x00,     /* larl    %r1,.       */
    522  1.1  christos     0xe3, 0x10, 0x10, 0x00, 0x00, 0x04,     /* lg      %r1,0(%r1)  */
    523  1.1  christos     0x07, 0xf1,                             /* br      %r1         */
    524  1.1  christos     0x0d, 0x10,                             /* basr    %r1,%r0     */
    525  1.1  christos     0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14,     /* lgf     %r1,12(%r1) */
    526  1.1  christos     0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00,     /* jg      first plt   */
    527  1.1  christos     0x00, 0x00, 0x00, 0x00                  /* .long   0x00000000  */
    528  1.1  christos   };
    529  1.1  christos 
    530  1.1  christos /* The first PLT entry pushes the offset into the symbol table
    531  1.1  christos    from R1 onto the stack at 56(15) and the loader object info
    532  1.1  christos    at 48(15), loads the loader address in R1 and jumps to it.  */
    533  1.1  christos 
    534  1.1  christos /* The first entry in the PLT:
    535  1.1  christos 
    536  1.1  christos   PLT0:
    537  1.1  christos      STG  1,56(15)  # r1 contains the offset into the symbol table
    538  1.1  christos      LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
    539  1.1  christos      MVC  48(8,15),8(1) # move loader ino (object struct address) to stack
    540  1.1  christos      LG   1,16(1)   # get entry address of loader
    541  1.1  christos      BCR  15,1      # jump to loader
    542  1.1  christos 
    543  1.1  christos      Fixup at offset 8: relative address to start of GOT.  */
    544  1.1  christos 
    545  1.1  christos static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
    546  1.1  christos   {
    547  1.1  christos     0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24,     /* stg     %r1,56(%r15)      */
    548  1.1  christos     0xc0, 0x10, 0x00, 0x00, 0x00, 0x00,     /* larl    %r1,.             */
    549  1.1  christos     0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08,     /* mvc     48(8,%r15),8(%r1) */
    550  1.1  christos     0xe3, 0x10, 0x10, 0x10, 0x00, 0x04,     /* lg      %r1,16(%r1)       */
    551  1.1  christos     0x07, 0xf1,                             /* br      %r1               */
    552  1.1  christos     0x07, 0x00,                             /* nopr    %r0               */
    553  1.1  christos     0x07, 0x00,                             /* nopr    %r0               */
    554  1.1  christos     0x07, 0x00                              /* nopr    %r0               */
    555  1.1  christos   };
    556  1.1  christos 
    557  1.1  christos 
    558  1.1  christos /* s390 ELF linker hash entry.  */
    559  1.1  christos 
    560  1.1  christos struct elf_s390_link_hash_entry
    561  1.1  christos {
    562  1.1  christos   struct elf_link_hash_entry elf;
    563  1.1  christos 
    564  1.1  christos   /* Track dynamic relocs copied for this symbol.  */
    565  1.1  christos   struct elf_dyn_relocs *dyn_relocs;
    566  1.1  christos 
    567  1.1  christos   /* Number of GOTPLT references for a function.  */
    568  1.1  christos   bfd_signed_vma gotplt_refcount;
    569  1.1  christos 
    570  1.1  christos #define GOT_UNKNOWN	0
    571  1.1  christos #define GOT_NORMAL	1
    572  1.1  christos #define GOT_TLS_GD	2
    573  1.1  christos #define GOT_TLS_IE	3
    574  1.1  christos #define GOT_TLS_IE_NLT	3
    575  1.1  christos   unsigned char tls_type;
    576  1.1  christos 
    577  1.1  christos   /* For pointer equality reasons we might need to change the symbol
    578  1.1  christos      type from STT_GNU_IFUNC to STT_FUNC together with its value and
    579  1.1  christos      section entry.  So after alloc_dynrelocs only these values should
    580  1.1  christos      be used.  In order to check whether a symbol is IFUNC use
    581  1.1  christos      s390_is_ifunc_symbol_p.  */
    582  1.1  christos   bfd_vma ifunc_resolver_address;
    583  1.1  christos   asection *ifunc_resolver_section;
    584  1.1  christos };
    585  1.1  christos 
    586  1.1  christos #define elf_s390_hash_entry(ent) \
    587  1.1  christos   ((struct elf_s390_link_hash_entry *)(ent))
    588  1.1  christos 
    589  1.1  christos /* This structure represents an entry in the local PLT list needed for
    590  1.1  christos    local IFUNC symbols.  */
    591  1.1  christos struct plt_entry
    592  1.1  christos {
    593  1.1  christos   /* The section of the local symbol.
    594  1.1  christos      Set in relocate_section and used in finish_dynamic_sections.  */
    595  1.1  christos   asection *sec;
    596  1.1  christos 
    597  1.1  christos   union
    598  1.1  christos     {
    599  1.1  christos       bfd_signed_vma refcount;
    600  1.1  christos       bfd_vma offset;
    601  1.1  christos     } plt;
    602  1.1  christos };
    603  1.1  christos 
    604  1.1  christos /* NOTE: Keep this structure in sync with
    605  1.1  christos    the one declared in elf32-s390.c.  */
    606  1.1  christos struct elf_s390_obj_tdata
    607  1.1  christos {
    608  1.1  christos   struct elf_obj_tdata root;
    609  1.1  christos 
    610  1.1  christos   /* A local PLT is needed for ifunc symbols.  */
    611  1.1  christos   struct plt_entry *local_plt;
    612  1.1  christos 
    613  1.1  christos   /* TLS type for each local got entry.  */
    614  1.1  christos   char *local_got_tls_type;
    615  1.1  christos };
    616  1.1  christos 
    617  1.1  christos #define elf_s390_tdata(abfd) \
    618  1.1  christos   ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
    619  1.1  christos 
    620  1.1  christos #define elf_s390_local_plt(abfd) \
    621  1.1  christos   (elf_s390_tdata (abfd)->local_plt)
    622  1.1  christos 
    623  1.1  christos #define elf_s390_local_got_tls_type(abfd) \
    624  1.1  christos   (elf_s390_tdata (abfd)->local_got_tls_type)
    625  1.1  christos 
    626  1.1  christos #define is_s390_elf(bfd)				\
    627  1.1  christos   (bfd_get_flavour (bfd) == bfd_target_elf_flavour	\
    628  1.1  christos    && elf_tdata (bfd) != NULL				\
    629  1.1  christos    && elf_object_id (bfd) == S390_ELF_DATA)
    630  1.1  christos 
    631  1.1  christos static bfd_boolean
    632  1.1  christos elf_s390_mkobject (bfd *abfd)
    633  1.1  christos {
    634  1.1  christos   return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
    635  1.1  christos 				  S390_ELF_DATA);
    636  1.1  christos }
    637  1.1  christos 
    638  1.1  christos static bfd_boolean
    639  1.1  christos elf_s390_object_p (bfd *abfd)
    640  1.1  christos {
    641  1.1  christos   /* Set the right machine number for an s390 elf32 file.  */
    642  1.1  christos   return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
    643  1.1  christos }
    644  1.1  christos 
    645  1.1  christos /* s390 ELF linker hash table.  */
    646  1.1  christos 
    647  1.1  christos struct elf_s390_link_hash_table
    648  1.1  christos {
    649  1.1  christos   struct elf_link_hash_table elf;
    650  1.1  christos 
    651  1.1  christos   /* Short-cuts to get to dynamic linker sections.  */
    652  1.1  christos   asection *sdynbss;
    653  1.1  christos   asection *srelbss;
    654  1.1  christos   asection *irelifunc;
    655  1.1  christos 
    656  1.1  christos   union {
    657  1.1  christos     bfd_signed_vma refcount;
    658  1.1  christos     bfd_vma offset;
    659  1.1  christos   } tls_ldm_got;
    660  1.1  christos 
    661  1.1  christos   /* Small local sym cache.  */
    662  1.1  christos   struct sym_cache sym_cache;
    663  1.1  christos };
    664  1.1  christos 
    665  1.1  christos /* Get the s390 ELF linker hash table from a link_info structure.  */
    666  1.1  christos 
    667  1.1  christos #define elf_s390_hash_table(p) \
    668  1.1  christos   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
    669  1.1  christos   == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
    670  1.1  christos 
    671  1.1  christos #define ELF64 1
    672  1.1  christos #include "elf-s390-common.c"
    673  1.1  christos 
    674  1.1  christos /* Create an entry in an s390 ELF linker hash table.  */
    675  1.1  christos 
    676  1.1  christos static struct bfd_hash_entry *
    677  1.1  christos link_hash_newfunc (struct bfd_hash_entry *entry,
    678  1.1  christos 		   struct bfd_hash_table *table,
    679  1.1  christos 		   const char *string)
    680  1.1  christos {
    681  1.1  christos   /* Allocate the structure if it has not already been allocated by a
    682  1.1  christos      subclass.  */
    683  1.1  christos   if (entry == NULL)
    684  1.1  christos     {
    685  1.1  christos       entry = bfd_hash_allocate (table,
    686  1.1  christos 				 sizeof (struct elf_s390_link_hash_entry));
    687  1.1  christos       if (entry == NULL)
    688  1.1  christos 	return entry;
    689  1.1  christos     }
    690  1.1  christos 
    691  1.1  christos   /* Call the allocation method of the superclass.  */
    692  1.1  christos   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
    693  1.1  christos   if (entry != NULL)
    694  1.1  christos     {
    695  1.1  christos       struct elf_s390_link_hash_entry *eh;
    696  1.1  christos 
    697  1.1  christos       eh = (struct elf_s390_link_hash_entry *) entry;
    698  1.1  christos       eh->dyn_relocs = NULL;
    699  1.1  christos       eh->gotplt_refcount = 0;
    700  1.1  christos       eh->tls_type = GOT_UNKNOWN;
    701  1.1  christos       eh->ifunc_resolver_address = 0;
    702  1.1  christos       eh->ifunc_resolver_section = NULL;
    703  1.1  christos     }
    704  1.1  christos 
    705  1.1  christos   return entry;
    706  1.1  christos }
    707  1.1  christos 
    708  1.1  christos /* Create an s390 ELF linker hash table.  */
    709  1.1  christos 
    710  1.1  christos static struct bfd_link_hash_table *
    711  1.1  christos elf_s390_link_hash_table_create (bfd *abfd)
    712  1.1  christos {
    713  1.1  christos   struct elf_s390_link_hash_table *ret;
    714  1.1  christos   bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
    715  1.1  christos 
    716  1.1  christos   ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
    717  1.1  christos   if (ret == NULL)
    718  1.1  christos     return NULL;
    719  1.1  christos 
    720  1.1  christos   if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
    721  1.1  christos 				      sizeof (struct elf_s390_link_hash_entry),
    722  1.1  christos 				      S390_ELF_DATA))
    723  1.1  christos     {
    724  1.1  christos       free (ret);
    725  1.1  christos       return NULL;
    726  1.1  christos     }
    727  1.1  christos 
    728  1.1  christos   return &ret->elf.root;
    729  1.1  christos }
    730  1.1  christos 
    731  1.1  christos /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
    732  1.1  christos    shortcuts to them in our hash table.  */
    733  1.1  christos 
    734  1.1  christos static bfd_boolean
    735  1.1  christos create_got_section (bfd *dynobj,
    736  1.1  christos 		    struct bfd_link_info *info)
    737  1.1  christos {
    738  1.1  christos   struct elf_s390_link_hash_table *htab;
    739  1.1  christos 
    740  1.1  christos   if (! _bfd_elf_create_got_section (dynobj, info))
    741  1.1  christos     return FALSE;
    742  1.1  christos 
    743  1.1  christos   htab = elf_s390_hash_table (info);
    744  1.1  christos   if (htab == NULL)
    745  1.1  christos     return FALSE;
    746  1.1  christos 
    747  1.1  christos   htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
    748  1.1  christos   htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
    749  1.1  christos   htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
    750  1.1  christos   if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
    751  1.1  christos     abort ();
    752  1.1  christos   return TRUE;
    753  1.1  christos }
    754  1.1  christos 
    755  1.1  christos /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
    756  1.1  christos    .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
    757  1.1  christos    hash table.  */
    758  1.1  christos 
    759  1.1  christos static bfd_boolean
    760  1.1  christos elf_s390_create_dynamic_sections (bfd *dynobj,
    761  1.1  christos 				  struct bfd_link_info *info)
    762  1.1  christos {
    763  1.1  christos   struct elf_s390_link_hash_table *htab;
    764  1.1  christos 
    765  1.1  christos   htab = elf_s390_hash_table (info);
    766  1.1  christos   if (htab == NULL)
    767  1.1  christos     return FALSE;
    768  1.1  christos 
    769  1.1  christos   if (!htab->elf.sgot && !create_got_section (dynobj, info))
    770  1.1  christos     return FALSE;
    771  1.1  christos 
    772  1.1  christos   if (!_bfd_elf_create_dynamic_sections (dynobj, info))
    773  1.1  christos     return FALSE;
    774  1.1  christos 
    775  1.1  christos   htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
    776  1.1  christos   htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
    777  1.1  christos   htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
    778  1.6  christos   if (!bfd_link_pic (info))
    779  1.1  christos     htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
    780  1.1  christos 
    781  1.1  christos   if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
    782  1.6  christos       || (!bfd_link_pic (info) && !htab->srelbss))
    783  1.1  christos     abort ();
    784  1.1  christos 
    785  1.1  christos   return TRUE;
    786  1.1  christos }
    787  1.1  christos 
    788  1.1  christos /* Copy the extra info we tack onto an elf_link_hash_entry.  */
    789  1.1  christos 
    790  1.1  christos static void
    791  1.1  christos elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
    792  1.1  christos 			       struct elf_link_hash_entry *dir,
    793  1.1  christos 			       struct elf_link_hash_entry *ind)
    794  1.1  christos {
    795  1.1  christos   struct elf_s390_link_hash_entry *edir, *eind;
    796  1.1  christos 
    797  1.1  christos   edir = (struct elf_s390_link_hash_entry *) dir;
    798  1.1  christos   eind = (struct elf_s390_link_hash_entry *) ind;
    799  1.1  christos 
    800  1.1  christos   if (eind->dyn_relocs != NULL)
    801  1.1  christos     {
    802  1.1  christos       if (edir->dyn_relocs != NULL)
    803  1.1  christos 	{
    804  1.1  christos 	  struct elf_dyn_relocs **pp;
    805  1.1  christos 	  struct elf_dyn_relocs *p;
    806  1.1  christos 
    807  1.1  christos 	  /* Add reloc counts against the indirect sym to the direct sym
    808  1.1  christos 	     list.  Merge any entries against the same section.  */
    809  1.1  christos 	  for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
    810  1.1  christos 	    {
    811  1.1  christos 	      struct elf_dyn_relocs *q;
    812  1.1  christos 
    813  1.1  christos 	      for (q = edir->dyn_relocs; q != NULL; q = q->next)
    814  1.1  christos 		if (q->sec == p->sec)
    815  1.1  christos 		  {
    816  1.1  christos 		    q->pc_count += p->pc_count;
    817  1.1  christos 		    q->count += p->count;
    818  1.1  christos 		    *pp = p->next;
    819  1.1  christos 		    break;
    820  1.1  christos 		  }
    821  1.1  christos 	      if (q == NULL)
    822  1.1  christos 		pp = &p->next;
    823  1.1  christos 	    }
    824  1.1  christos 	  *pp = edir->dyn_relocs;
    825  1.1  christos 	}
    826  1.1  christos 
    827  1.1  christos       edir->dyn_relocs = eind->dyn_relocs;
    828  1.1  christos       eind->dyn_relocs = NULL;
    829  1.1  christos     }
    830  1.1  christos 
    831  1.1  christos   if (ind->root.type == bfd_link_hash_indirect
    832  1.1  christos       && dir->got.refcount <= 0)
    833  1.1  christos     {
    834  1.1  christos       edir->tls_type = eind->tls_type;
    835  1.1  christos       eind->tls_type = GOT_UNKNOWN;
    836  1.1  christos     }
    837  1.1  christos 
    838  1.1  christos   if (ELIMINATE_COPY_RELOCS
    839  1.1  christos       && ind->root.type != bfd_link_hash_indirect
    840  1.1  christos       && dir->dynamic_adjusted)
    841  1.1  christos     {
    842  1.1  christos       /* If called to transfer flags for a weakdef during processing
    843  1.1  christos 	 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
    844  1.1  christos 	 We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
    845  1.1  christos       dir->ref_dynamic |= ind->ref_dynamic;
    846  1.1  christos       dir->ref_regular |= ind->ref_regular;
    847  1.1  christos       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
    848  1.1  christos       dir->needs_plt |= ind->needs_plt;
    849  1.1  christos     }
    850  1.1  christos   else
    851  1.1  christos     _bfd_elf_link_hash_copy_indirect (info, dir, ind);
    852  1.1  christos }
    853  1.1  christos 
    854  1.1  christos static int
    855  1.1  christos elf_s390_tls_transition (struct bfd_link_info *info,
    856  1.1  christos 			 int r_type,
    857  1.1  christos 			 int is_local)
    858  1.1  christos {
    859  1.6  christos   if (bfd_link_pic (info))
    860  1.1  christos     return r_type;
    861  1.1  christos 
    862  1.1  christos   switch (r_type)
    863  1.1  christos     {
    864  1.1  christos     case R_390_TLS_GD64:
    865  1.1  christos     case R_390_TLS_IE64:
    866  1.1  christos       if (is_local)
    867  1.1  christos 	return R_390_TLS_LE64;
    868  1.1  christos       return R_390_TLS_IE64;
    869  1.1  christos     case R_390_TLS_GOTIE64:
    870  1.1  christos       if (is_local)
    871  1.1  christos 	return R_390_TLS_LE64;
    872  1.1  christos       return R_390_TLS_GOTIE64;
    873  1.1  christos     case R_390_TLS_LDM64:
    874  1.1  christos       return R_390_TLS_LE64;
    875  1.1  christos     }
    876  1.1  christos 
    877  1.1  christos   return r_type;
    878  1.1  christos }
    879  1.1  christos 
    880  1.1  christos /* Look through the relocs for a section during the first phase, and
    881  1.1  christos    allocate space in the global offset table or procedure linkage
    882  1.1  christos    table.  */
    883  1.1  christos 
    884  1.1  christos static bfd_boolean
    885  1.1  christos elf_s390_check_relocs (bfd *abfd,
    886  1.1  christos 		       struct bfd_link_info *info,
    887  1.1  christos 		       asection *sec,
    888  1.1  christos 		       const Elf_Internal_Rela *relocs)
    889  1.1  christos {
    890  1.1  christos   struct elf_s390_link_hash_table *htab;
    891  1.1  christos   Elf_Internal_Shdr *symtab_hdr;
    892  1.1  christos   struct elf_link_hash_entry **sym_hashes;
    893  1.1  christos   const Elf_Internal_Rela *rel;
    894  1.1  christos   const Elf_Internal_Rela *rel_end;
    895  1.1  christos   asection *sreloc;
    896  1.1  christos   bfd_signed_vma *local_got_refcounts;
    897  1.1  christos   int tls_type, old_tls_type;
    898  1.1  christos 
    899  1.6  christos   if (bfd_link_relocatable (info))
    900  1.1  christos     return TRUE;
    901  1.1  christos 
    902  1.1  christos   BFD_ASSERT (is_s390_elf (abfd));
    903  1.1  christos 
    904  1.1  christos   htab = elf_s390_hash_table (info);
    905  1.1  christos   if (htab == NULL)
    906  1.1  christos     return FALSE;
    907  1.1  christos 
    908  1.1  christos   symtab_hdr = &elf_symtab_hdr (abfd);
    909  1.1  christos   sym_hashes = elf_sym_hashes (abfd);
    910  1.1  christos   local_got_refcounts = elf_local_got_refcounts (abfd);
    911  1.1  christos 
    912  1.1  christos   sreloc = NULL;
    913  1.1  christos 
    914  1.1  christos   rel_end = relocs + sec->reloc_count;
    915  1.1  christos   for (rel = relocs; rel < rel_end; rel++)
    916  1.1  christos     {
    917  1.1  christos       unsigned int r_type;
    918  1.1  christos       unsigned long r_symndx;
    919  1.1  christos       struct elf_link_hash_entry *h;
    920  1.1  christos       Elf_Internal_Sym *isym;
    921  1.1  christos 
    922  1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
    923  1.1  christos 
    924  1.1  christos       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
    925  1.1  christos 	{
    926  1.1  christos 	  (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
    927  1.1  christos 				 abfd,
    928  1.1  christos 				 r_symndx);
    929  1.1  christos 	  return FALSE;
    930  1.1  christos 	}
    931  1.1  christos 
    932  1.1  christos       if (r_symndx < symtab_hdr->sh_info)
    933  1.1  christos 	{
    934  1.1  christos 	  /* A local symbol.  */
    935  1.1  christos 	  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
    936  1.1  christos 					abfd, r_symndx);
    937  1.1  christos 	  if (isym == NULL)
    938  1.1  christos 	    return FALSE;
    939  1.1  christos 
    940  1.1  christos 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
    941  1.1  christos 	    {
    942  1.1  christos 	      struct plt_entry *plt;
    943  1.1  christos 
    944  1.1  christos 	      if (htab->elf.dynobj == NULL)
    945  1.1  christos 		htab->elf.dynobj = abfd;
    946  1.1  christos 
    947  1.1  christos 	      if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
    948  1.1  christos 		return FALSE;
    949  1.1  christos 
    950  1.1  christos 	      if (local_got_refcounts == NULL)
    951  1.1  christos 		{
    952  1.1  christos 		  if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
    953  1.1  christos 		    return FALSE;
    954  1.1  christos 		  local_got_refcounts = elf_local_got_refcounts (abfd);
    955  1.1  christos 		}
    956  1.1  christos 	      plt = elf_s390_local_plt (abfd);
    957  1.1  christos 	      plt[r_symndx].plt.refcount++;
    958  1.1  christos 	    }
    959  1.1  christos 	  h = NULL;
    960  1.1  christos 	}
    961  1.1  christos       else
    962  1.1  christos 	{
    963  1.1  christos 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
    964  1.1  christos 	  while (h->root.type == bfd_link_hash_indirect
    965  1.1  christos 		 || h->root.type == bfd_link_hash_warning)
    966  1.1  christos 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
    967  1.1  christos 
    968  1.1  christos 	  /* PR15323, ref flags aren't set for references in the same
    969  1.1  christos 	     object.  */
    970  1.1  christos 	  h->root.non_ir_ref = 1;
    971  1.1  christos 	}
    972  1.1  christos 
    973  1.1  christos       /* Create got section and local_got_refcounts array if they
    974  1.1  christos 	 are needed.  */
    975  1.1  christos       r_type = elf_s390_tls_transition (info,
    976  1.1  christos 					ELF64_R_TYPE (rel->r_info),
    977  1.1  christos 					h == NULL);
    978  1.1  christos       switch (r_type)
    979  1.1  christos 	{
    980  1.1  christos 	case R_390_GOT12:
    981  1.1  christos 	case R_390_GOT16:
    982  1.1  christos 	case R_390_GOT20:
    983  1.1  christos 	case R_390_GOT32:
    984  1.1  christos 	case R_390_GOT64:
    985  1.1  christos 	case R_390_GOTENT:
    986  1.1  christos 	case R_390_GOTPLT12:
    987  1.1  christos 	case R_390_GOTPLT16:
    988  1.1  christos 	case R_390_GOTPLT20:
    989  1.1  christos 	case R_390_GOTPLT32:
    990  1.1  christos 	case R_390_GOTPLT64:
    991  1.1  christos 	case R_390_GOTPLTENT:
    992  1.1  christos 	case R_390_TLS_GD64:
    993  1.1  christos 	case R_390_TLS_GOTIE12:
    994  1.1  christos 	case R_390_TLS_GOTIE20:
    995  1.1  christos 	case R_390_TLS_GOTIE64:
    996  1.1  christos 	case R_390_TLS_IEENT:
    997  1.1  christos 	case R_390_TLS_IE64:
    998  1.1  christos 	case R_390_TLS_LDM64:
    999  1.1  christos 	  if (h == NULL
   1000  1.1  christos 	      && local_got_refcounts == NULL)
   1001  1.1  christos 	    {
   1002  1.1  christos 	      if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
   1003  1.1  christos 		return FALSE;
   1004  1.1  christos 	      local_got_refcounts = elf_local_got_refcounts (abfd);
   1005  1.1  christos 	    }
   1006  1.1  christos 
   1007  1.1  christos 	  /* Fall through.  */
   1008  1.1  christos 	case R_390_GOTOFF16:
   1009  1.1  christos 	case R_390_GOTOFF32:
   1010  1.1  christos 	case R_390_GOTOFF64:
   1011  1.1  christos 	case R_390_GOTPC:
   1012  1.1  christos 	case R_390_GOTPCDBL:
   1013  1.1  christos 	  if (htab->elf.sgot == NULL)
   1014  1.1  christos 	    {
   1015  1.1  christos 	      if (htab->elf.dynobj == NULL)
   1016  1.1  christos 		htab->elf.dynobj = abfd;
   1017  1.1  christos 	      if (!create_got_section (htab->elf.dynobj, info))
   1018  1.1  christos 		return FALSE;
   1019  1.1  christos 	    }
   1020  1.1  christos 	}
   1021  1.1  christos 
   1022  1.1  christos       if (h != NULL)
   1023  1.1  christos 	{
   1024  1.1  christos 	  if (htab->elf.dynobj == NULL)
   1025  1.1  christos 	    htab->elf.dynobj = abfd;
   1026  1.1  christos 	  if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
   1027  1.1  christos 	    return FALSE;
   1028  1.1  christos 
   1029  1.1  christos 	  /* Make sure an IFUNC symbol defined in a non-shared object
   1030  1.1  christos 	     always gets a PLT slot.  */
   1031  1.1  christos 	  if (s390_is_ifunc_symbol_p (h) && h->def_regular)
   1032  1.1  christos 	    {
   1033  1.1  christos 	      /* The symbol is called by the dynamic loader in order
   1034  1.1  christos 		 to resolve the relocation.  So it is in fact also
   1035  1.1  christos 		 referenced.  */
   1036  1.1  christos 	      h->ref_regular = 1;
   1037  1.1  christos 	      h->needs_plt = 1;
   1038  1.1  christos 	    }
   1039  1.1  christos 	}
   1040  1.1  christos 
   1041  1.1  christos       switch (r_type)
   1042  1.1  christos 	{
   1043  1.1  christos 	case R_390_GOTPC:
   1044  1.1  christos 	case R_390_GOTPCDBL:
   1045  1.1  christos 	  /* These relocs do not need a GOT slot.  They just load the
   1046  1.1  christos 	     GOT pointer itself or address something else relative to
   1047  1.1  christos 	     the GOT.  Since the GOT pointer has been set up above we
   1048  1.1  christos 	     are done.  */
   1049  1.1  christos 	  break;
   1050  1.6  christos 	case R_390_GOTOFF16:
   1051  1.6  christos 	case R_390_GOTOFF32:
   1052  1.6  christos 	case R_390_GOTOFF64:
   1053  1.6  christos 	  if (h == NULL || !s390_is_ifunc_symbol_p (h) || !h->def_regular)
   1054  1.6  christos 	    break;
   1055  1.1  christos 
   1056  1.1  christos 	case R_390_PLT12DBL:
   1057  1.1  christos 	case R_390_PLT16DBL:
   1058  1.1  christos 	case R_390_PLT24DBL:
   1059  1.1  christos 	case R_390_PLT32:
   1060  1.1  christos 	case R_390_PLT32DBL:
   1061  1.1  christos 	case R_390_PLT64:
   1062  1.1  christos 	case R_390_PLTOFF16:
   1063  1.1  christos 	case R_390_PLTOFF32:
   1064  1.1  christos 	case R_390_PLTOFF64:
   1065  1.1  christos 	  /* This symbol requires a procedure linkage table entry.  We
   1066  1.1  christos 	     actually build the entry in adjust_dynamic_symbol,
   1067  1.1  christos 	     because this might be a case of linking PIC code which is
   1068  1.1  christos 	     never referenced by a dynamic object, in which case we
   1069  1.1  christos 	     don't need to generate a procedure linkage table entry
   1070  1.1  christos 	     after all.  */
   1071  1.1  christos 
   1072  1.1  christos 	  /* If this is a local symbol, we resolve it directly without
   1073  1.1  christos 	     creating a procedure linkage table entry.  */
   1074  1.1  christos 	  if (h != NULL)
   1075  1.1  christos 	    {
   1076  1.1  christos 	      h->needs_plt = 1;
   1077  1.1  christos 	      h->plt.refcount += 1;
   1078  1.1  christos 	    }
   1079  1.1  christos 	  break;
   1080  1.1  christos 
   1081  1.1  christos 	case R_390_GOTPLT12:
   1082  1.1  christos 	case R_390_GOTPLT16:
   1083  1.1  christos 	case R_390_GOTPLT20:
   1084  1.1  christos 	case R_390_GOTPLT32:
   1085  1.1  christos 	case R_390_GOTPLT64:
   1086  1.1  christos 	case R_390_GOTPLTENT:
   1087  1.1  christos 	  /* This symbol requires either a procedure linkage table entry
   1088  1.1  christos 	     or an entry in the local got. We actually build the entry
   1089  1.1  christos 	     in adjust_dynamic_symbol because whether this is really a
   1090  1.1  christos 	     global reference can change and with it the fact if we have
   1091  1.1  christos 	     to create a plt entry or a local got entry. To be able to
   1092  1.1  christos 	     make a once global symbol a local one we have to keep track
   1093  1.1  christos 	     of the number of gotplt references that exist for this
   1094  1.1  christos 	     symbol.  */
   1095  1.1  christos 	  if (h != NULL)
   1096  1.1  christos 	    {
   1097  1.1  christos 	      ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
   1098  1.1  christos 	      h->needs_plt = 1;
   1099  1.1  christos 	      h->plt.refcount += 1;
   1100  1.1  christos 	    }
   1101  1.1  christos 	  else
   1102  1.1  christos 	    local_got_refcounts[r_symndx] += 1;
   1103  1.1  christos 	  break;
   1104  1.1  christos 
   1105  1.1  christos 	case R_390_TLS_LDM64:
   1106  1.1  christos 	  htab->tls_ldm_got.refcount += 1;
   1107  1.1  christos 	  break;
   1108  1.1  christos 
   1109  1.1  christos 	case R_390_TLS_IE64:
   1110  1.1  christos 	case R_390_TLS_GOTIE12:
   1111  1.1  christos 	case R_390_TLS_GOTIE20:
   1112  1.1  christos 	case R_390_TLS_GOTIE64:
   1113  1.1  christos 	case R_390_TLS_IEENT:
   1114  1.6  christos 	  if (bfd_link_pic (info))
   1115  1.1  christos 	    info->flags |= DF_STATIC_TLS;
   1116  1.1  christos 	  /* Fall through */
   1117  1.1  christos 
   1118  1.1  christos 	case R_390_GOT12:
   1119  1.1  christos 	case R_390_GOT16:
   1120  1.1  christos 	case R_390_GOT20:
   1121  1.1  christos 	case R_390_GOT32:
   1122  1.1  christos 	case R_390_GOT64:
   1123  1.1  christos 	case R_390_GOTENT:
   1124  1.1  christos 	case R_390_TLS_GD64:
   1125  1.1  christos 	  /* This symbol requires a global offset table entry.  */
   1126  1.1  christos 	  switch (r_type)
   1127  1.1  christos 	    {
   1128  1.1  christos 	    default:
   1129  1.1  christos 	    case R_390_GOT12:
   1130  1.1  christos 	    case R_390_GOT16:
   1131  1.1  christos 	    case R_390_GOT20:
   1132  1.1  christos 	    case R_390_GOT32:
   1133  1.1  christos 	    case R_390_GOTENT:
   1134  1.1  christos 	      tls_type = GOT_NORMAL;
   1135  1.1  christos 	      break;
   1136  1.1  christos 	    case R_390_TLS_GD64:
   1137  1.1  christos 	      tls_type = GOT_TLS_GD;
   1138  1.1  christos 	      break;
   1139  1.1  christos 	    case R_390_TLS_IE64:
   1140  1.1  christos 	    case R_390_TLS_GOTIE64:
   1141  1.1  christos 	      tls_type = GOT_TLS_IE;
   1142  1.1  christos 	      break;
   1143  1.1  christos 	    case R_390_TLS_GOTIE12:
   1144  1.1  christos 	    case R_390_TLS_GOTIE20:
   1145  1.1  christos 	    case R_390_TLS_IEENT:
   1146  1.1  christos 	      tls_type = GOT_TLS_IE_NLT;
   1147  1.1  christos 	      break;
   1148  1.1  christos 	    }
   1149  1.1  christos 
   1150  1.1  christos 	  if (h != NULL)
   1151  1.1  christos 	    {
   1152  1.1  christos 	      h->got.refcount += 1;
   1153  1.1  christos 	      old_tls_type = elf_s390_hash_entry(h)->tls_type;
   1154  1.1  christos 	    }
   1155  1.1  christos 	  else
   1156  1.1  christos 	    {
   1157  1.1  christos 	      local_got_refcounts[r_symndx] += 1;
   1158  1.1  christos 	      old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
   1159  1.1  christos 	    }
   1160  1.1  christos 	  /* If a TLS symbol is accessed using IE at least once,
   1161  1.1  christos 	     there is no point to use dynamic model for it.  */
   1162  1.1  christos 	  if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
   1163  1.1  christos 	    {
   1164  1.1  christos 	      if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
   1165  1.1  christos 		{
   1166  1.1  christos 		  (*_bfd_error_handler)
   1167  1.1  christos 		    (_("%B: `%s' accessed both as normal and thread local symbol"),
   1168  1.1  christos 		     abfd, h->root.root.string);
   1169  1.1  christos 		  return FALSE;
   1170  1.1  christos 		}
   1171  1.1  christos 	      if (old_tls_type > tls_type)
   1172  1.1  christos 		tls_type = old_tls_type;
   1173  1.1  christos 	    }
   1174  1.1  christos 
   1175  1.1  christos 	  if (old_tls_type != tls_type)
   1176  1.1  christos 	    {
   1177  1.1  christos 	      if (h != NULL)
   1178  1.1  christos 		elf_s390_hash_entry (h)->tls_type = tls_type;
   1179  1.1  christos 	      else
   1180  1.1  christos 		elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
   1181  1.1  christos 	    }
   1182  1.1  christos 
   1183  1.1  christos 	  if (r_type != R_390_TLS_IE64)
   1184  1.1  christos 	    break;
   1185  1.1  christos 	  /* Fall through */
   1186  1.1  christos 
   1187  1.1  christos 	case R_390_TLS_LE64:
   1188  1.3  christos 	  /* For static linking and executables this reloc will be
   1189  1.3  christos 	     calculated at linktime otherwise a TLS_TPOFF runtime
   1190  1.3  christos 	     reloc will be generated.  */
   1191  1.6  christos 	  if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
   1192  1.3  christos 	    break;
   1193  1.3  christos 
   1194  1.6  christos 	  if (!bfd_link_pic (info))
   1195  1.1  christos 	    break;
   1196  1.1  christos 	  info->flags |= DF_STATIC_TLS;
   1197  1.1  christos 	  /* Fall through */
   1198  1.1  christos 
   1199  1.1  christos 	case R_390_8:
   1200  1.1  christos 	case R_390_16:
   1201  1.1  christos 	case R_390_32:
   1202  1.1  christos 	case R_390_64:
   1203  1.1  christos 	case R_390_PC12DBL:
   1204  1.1  christos 	case R_390_PC16:
   1205  1.1  christos 	case R_390_PC16DBL:
   1206  1.1  christos 	case R_390_PC24DBL:
   1207  1.1  christos 	case R_390_PC32:
   1208  1.1  christos 	case R_390_PC32DBL:
   1209  1.1  christos 	case R_390_PC64:
   1210  1.6  christos 	  if (h != NULL && bfd_link_executable (info))
   1211  1.1  christos 	    {
   1212  1.1  christos 	      /* If this reloc is in a read-only section, we might
   1213  1.1  christos 		 need a copy reloc.  We can't check reliably at this
   1214  1.1  christos 		 stage whether the section is read-only, as input
   1215  1.1  christos 		 sections have not yet been mapped to output sections.
   1216  1.1  christos 		 Tentatively set the flag for now, and correct in
   1217  1.1  christos 		 adjust_dynamic_symbol.  */
   1218  1.1  christos 	      h->non_got_ref = 1;
   1219  1.1  christos 
   1220  1.6  christos 	      if (!bfd_link_pic (info))
   1221  1.1  christos 		{
   1222  1.1  christos 		  /* We may need a .plt entry if the function this reloc
   1223  1.1  christos 		     refers to is in a shared lib.  */
   1224  1.1  christos 		  h->plt.refcount += 1;
   1225  1.1  christos 		}
   1226  1.1  christos 	    }
   1227  1.1  christos 
   1228  1.1  christos 	  /* If we are creating a shared library, and this is a reloc
   1229  1.1  christos 	     against a global symbol, or a non PC relative reloc
   1230  1.1  christos 	     against a local symbol, then we need to copy the reloc
   1231  1.1  christos 	     into the shared library.  However, if we are linking with
   1232  1.1  christos 	     -Bsymbolic, we do not need to copy a reloc against a
   1233  1.1  christos 	     global symbol which is defined in an object we are
   1234  1.1  christos 	     including in the link (i.e., DEF_REGULAR is set).  At
   1235  1.1  christos 	     this point we have not seen all the input files, so it is
   1236  1.1  christos 	     possible that DEF_REGULAR is not set now but will be set
   1237  1.1  christos 	     later (it is never cleared).  In case of a weak definition,
   1238  1.1  christos 	     DEF_REGULAR may be cleared later by a strong definition in
   1239  1.1  christos 	     a shared library. We account for that possibility below by
   1240  1.1  christos 	     storing information in the relocs_copied field of the hash
   1241  1.1  christos 	     table entry.  A similar situation occurs when creating
   1242  1.1  christos 	     shared libraries and symbol visibility changes render the
   1243  1.1  christos 	     symbol local.
   1244  1.1  christos 
   1245  1.1  christos 	     If on the other hand, we are creating an executable, we
   1246  1.1  christos 	     may need to keep relocations for symbols satisfied by a
   1247  1.1  christos 	     dynamic library if we manage to avoid copy relocs for the
   1248  1.1  christos 	     symbol.  */
   1249  1.6  christos 	  if ((bfd_link_pic (info)
   1250  1.1  christos 	       && (sec->flags & SEC_ALLOC) != 0
   1251  1.1  christos 	       && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
   1252  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
   1253  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
   1254  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
   1255  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC32
   1256  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
   1257  1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
   1258  1.1  christos 		   || (h != NULL
   1259  1.1  christos 		       && (! SYMBOLIC_BIND (info, h)
   1260  1.1  christos 			   || h->root.type == bfd_link_hash_defweak
   1261  1.1  christos 			   || !h->def_regular))))
   1262  1.1  christos 	      || (ELIMINATE_COPY_RELOCS
   1263  1.6  christos 		  && !bfd_link_pic (info)
   1264  1.1  christos 		  && (sec->flags & SEC_ALLOC) != 0
   1265  1.1  christos 		  && h != NULL
   1266  1.1  christos 		  && (h->root.type == bfd_link_hash_defweak
   1267  1.1  christos 		      || !h->def_regular)))
   1268  1.1  christos 	    {
   1269  1.1  christos 	      struct elf_dyn_relocs *p;
   1270  1.1  christos 	      struct elf_dyn_relocs **head;
   1271  1.1  christos 
   1272  1.1  christos 	      /* We must copy these reloc types into the output file.
   1273  1.1  christos 		 Create a reloc section in dynobj and make room for
   1274  1.1  christos 		 this reloc.  */
   1275  1.1  christos 	      if (sreloc == NULL)
   1276  1.1  christos 		{
   1277  1.1  christos 		  if (htab->elf.dynobj == NULL)
   1278  1.1  christos 		    htab->elf.dynobj = abfd;
   1279  1.1  christos 
   1280  1.1  christos 		  sreloc = _bfd_elf_make_dynamic_reloc_section
   1281  1.1  christos 		    (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
   1282  1.1  christos 
   1283  1.1  christos 		  if (sreloc == NULL)
   1284  1.1  christos 		    return FALSE;
   1285  1.1  christos 		}
   1286  1.1  christos 
   1287  1.1  christos 	      /* If this is a global symbol, we count the number of
   1288  1.1  christos 		 relocations we need for this symbol.  */
   1289  1.1  christos 	      if (h != NULL)
   1290  1.1  christos 		{
   1291  1.1  christos 		  head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
   1292  1.1  christos 		}
   1293  1.1  christos 	      else
   1294  1.1  christos 		{
   1295  1.1  christos 		  /* Track dynamic relocs needed for local syms too.
   1296  1.1  christos 		     We really need local syms available to do this
   1297  1.1  christos 		     easily.  Oh well.  */
   1298  1.1  christos 		  asection *s;
   1299  1.1  christos 		  void *vpp;
   1300  1.1  christos 
   1301  1.1  christos 		  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   1302  1.1  christos 						abfd, r_symndx);
   1303  1.1  christos 		  if (isym == NULL)
   1304  1.1  christos 		    return FALSE;
   1305  1.1  christos 
   1306  1.1  christos 		  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   1307  1.1  christos 		  if (s == NULL)
   1308  1.1  christos 		    s = sec;
   1309  1.1  christos 
   1310  1.1  christos 		  vpp = &elf_section_data (s)->local_dynrel;
   1311  1.1  christos 		  head = (struct elf_dyn_relocs **) vpp;
   1312  1.1  christos 		}
   1313  1.1  christos 
   1314  1.1  christos 	      p = *head;
   1315  1.1  christos 	      if (p == NULL || p->sec != sec)
   1316  1.1  christos 		{
   1317  1.1  christos 		  bfd_size_type amt = sizeof *p;
   1318  1.1  christos 		  p = ((struct elf_dyn_relocs *)
   1319  1.1  christos 		       bfd_alloc (htab->elf.dynobj, amt));
   1320  1.1  christos 		  if (p == NULL)
   1321  1.1  christos 		    return FALSE;
   1322  1.1  christos 		  p->next = *head;
   1323  1.1  christos 		  *head = p;
   1324  1.1  christos 		  p->sec = sec;
   1325  1.1  christos 		  p->count = 0;
   1326  1.1  christos 		  p->pc_count = 0;
   1327  1.1  christos 		}
   1328  1.1  christos 
   1329  1.1  christos 	      p->count += 1;
   1330  1.1  christos 	      if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
   1331  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
   1332  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
   1333  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
   1334  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32
   1335  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
   1336  1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
   1337  1.1  christos 		p->pc_count += 1;
   1338  1.1  christos 	    }
   1339  1.1  christos 	  break;
   1340  1.1  christos 
   1341  1.1  christos 	  /* This relocation describes the C++ object vtable hierarchy.
   1342  1.1  christos 	     Reconstruct it for later use during GC.  */
   1343  1.1  christos 	case R_390_GNU_VTINHERIT:
   1344  1.1  christos 	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
   1345  1.1  christos 	    return FALSE;
   1346  1.1  christos 	  break;
   1347  1.1  christos 
   1348  1.1  christos 	  /* This relocation describes which C++ vtable entries are actually
   1349  1.1  christos 	     used.  Record for later use during GC.  */
   1350  1.1  christos 	case R_390_GNU_VTENTRY:
   1351  1.1  christos 	  BFD_ASSERT (h != NULL);
   1352  1.1  christos 	  if (h != NULL
   1353  1.1  christos 	      && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
   1354  1.1  christos 	    return FALSE;
   1355  1.1  christos 	  break;
   1356  1.1  christos 
   1357  1.1  christos 	default:
   1358  1.1  christos 	  break;
   1359  1.1  christos 	}
   1360  1.1  christos     }
   1361  1.1  christos 
   1362  1.1  christos   return TRUE;
   1363  1.1  christos }
   1364  1.1  christos 
   1365  1.1  christos /* Return the section that should be marked against GC for a given
   1366  1.1  christos    relocation.  */
   1367  1.1  christos 
   1368  1.1  christos static asection *
   1369  1.1  christos elf_s390_gc_mark_hook (asection *sec,
   1370  1.1  christos 		       struct bfd_link_info *info,
   1371  1.1  christos 		       Elf_Internal_Rela *rel,
   1372  1.1  christos 		       struct elf_link_hash_entry *h,
   1373  1.1  christos 		       Elf_Internal_Sym *sym)
   1374  1.1  christos {
   1375  1.1  christos   if (h != NULL)
   1376  1.1  christos     switch (ELF64_R_TYPE (rel->r_info))
   1377  1.1  christos       {
   1378  1.1  christos       case R_390_GNU_VTINHERIT:
   1379  1.1  christos       case R_390_GNU_VTENTRY:
   1380  1.1  christos 	return NULL;
   1381  1.1  christos       }
   1382  1.1  christos 
   1383  1.1  christos   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
   1384  1.1  christos }
   1385  1.1  christos 
   1386  1.1  christos /* Update the got entry reference counts for the section being removed.  */
   1387  1.1  christos 
   1388  1.1  christos static bfd_boolean
   1389  1.1  christos elf_s390_gc_sweep_hook (bfd *abfd,
   1390  1.1  christos 			struct bfd_link_info *info,
   1391  1.1  christos 			asection *sec,
   1392  1.1  christos 			const Elf_Internal_Rela *relocs)
   1393  1.1  christos {
   1394  1.1  christos   struct elf_s390_link_hash_table *htab;
   1395  1.1  christos   Elf_Internal_Shdr *symtab_hdr;
   1396  1.1  christos   struct elf_link_hash_entry **sym_hashes;
   1397  1.1  christos   bfd_signed_vma *local_got_refcounts;
   1398  1.1  christos   const Elf_Internal_Rela *rel, *relend;
   1399  1.1  christos 
   1400  1.6  christos   if (bfd_link_relocatable (info))
   1401  1.1  christos     return TRUE;
   1402  1.1  christos 
   1403  1.1  christos   htab = elf_s390_hash_table (info);
   1404  1.1  christos   if (htab == NULL)
   1405  1.1  christos     return FALSE;
   1406  1.1  christos 
   1407  1.1  christos   elf_section_data (sec)->local_dynrel = NULL;
   1408  1.1  christos 
   1409  1.1  christos   symtab_hdr = &elf_symtab_hdr (abfd);
   1410  1.1  christos   sym_hashes = elf_sym_hashes (abfd);
   1411  1.1  christos   local_got_refcounts = elf_local_got_refcounts (abfd);
   1412  1.1  christos 
   1413  1.1  christos   relend = relocs + sec->reloc_count;
   1414  1.1  christos   for (rel = relocs; rel < relend; rel++)
   1415  1.1  christos     {
   1416  1.1  christos       unsigned long r_symndx;
   1417  1.1  christos       unsigned int r_type;
   1418  1.1  christos       struct elf_link_hash_entry *h = NULL;
   1419  1.1  christos 
   1420  1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
   1421  1.1  christos       if (r_symndx >= symtab_hdr->sh_info)
   1422  1.1  christos 	{
   1423  1.1  christos 	  struct elf_s390_link_hash_entry *eh;
   1424  1.1  christos 	  struct elf_dyn_relocs **pp;
   1425  1.1  christos 	  struct elf_dyn_relocs *p;
   1426  1.1  christos 
   1427  1.1  christos 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   1428  1.1  christos 	  while (h->root.type == bfd_link_hash_indirect
   1429  1.1  christos 		 || h->root.type == bfd_link_hash_warning)
   1430  1.1  christos 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   1431  1.1  christos 	  eh = (struct elf_s390_link_hash_entry *) h;
   1432  1.1  christos 
   1433  1.1  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
   1434  1.1  christos 	    if (p->sec == sec)
   1435  1.1  christos 	      {
   1436  1.1  christos 		/* Everything must go for SEC.  */
   1437  1.1  christos 		*pp = p->next;
   1438  1.1  christos 		break;
   1439  1.1  christos 	      }
   1440  1.1  christos 	}
   1441  1.1  christos       else
   1442  1.1  christos 	{
   1443  1.1  christos 	  Elf_Internal_Sym *isym;
   1444  1.1  christos 
   1445  1.1  christos 	  /* A local symbol.  */
   1446  1.1  christos 	  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   1447  1.1  christos 					abfd, r_symndx);
   1448  1.1  christos 	  if (isym == NULL)
   1449  1.1  christos 	    return FALSE;
   1450  1.1  christos 
   1451  1.1  christos 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   1452  1.1  christos 	    {
   1453  1.1  christos 	      struct plt_entry *plt = elf_s390_local_plt (abfd);
   1454  1.1  christos 	      if (plt[r_symndx].plt.refcount > 0)
   1455  1.1  christos 		plt[r_symndx].plt.refcount--;
   1456  1.1  christos 	    }
   1457  1.1  christos 	}
   1458  1.1  christos 
   1459  1.1  christos       r_type = ELF64_R_TYPE (rel->r_info);
   1460  1.1  christos       r_type = elf_s390_tls_transition (info, r_type, h != NULL);
   1461  1.1  christos       switch (r_type)
   1462  1.1  christos 	{
   1463  1.1  christos 	case R_390_TLS_LDM64:
   1464  1.1  christos 	  if (htab->tls_ldm_got.refcount > 0)
   1465  1.1  christos 	    htab->tls_ldm_got.refcount -= 1;
   1466  1.1  christos 	  break;
   1467  1.6  christos 	case R_390_GOTOFF16:
   1468  1.6  christos 	case R_390_GOTOFF32:
   1469  1.6  christos 	case R_390_GOTOFF64:
   1470  1.6  christos 	  if (h != NULL && s390_is_ifunc_symbol_p (h) && h->def_regular)
   1471  1.6  christos 	    {
   1472  1.6  christos 	      h->plt.refcount--;
   1473  1.6  christos 	      break;
   1474  1.6  christos 	    }
   1475  1.6  christos 
   1476  1.6  christos 	case R_390_GOTPC:
   1477  1.6  christos 	case R_390_GOTPCDBL:
   1478  1.6  christos 	  break;
   1479  1.1  christos 
   1480  1.1  christos 	case R_390_TLS_GD64:
   1481  1.1  christos 	case R_390_TLS_IE64:
   1482  1.1  christos 	case R_390_TLS_GOTIE12:
   1483  1.1  christos 	case R_390_TLS_GOTIE20:
   1484  1.1  christos 	case R_390_TLS_GOTIE64:
   1485  1.1  christos 	case R_390_TLS_IEENT:
   1486  1.1  christos 	case R_390_GOT12:
   1487  1.1  christos 	case R_390_GOT16:
   1488  1.1  christos 	case R_390_GOT20:
   1489  1.1  christos 	case R_390_GOT32:
   1490  1.1  christos 	case R_390_GOT64:
   1491  1.1  christos 	case R_390_GOTENT:
   1492  1.1  christos 	  if (h != NULL)
   1493  1.1  christos 	    {
   1494  1.1  christos 	      if (h->got.refcount > 0)
   1495  1.1  christos 		h->got.refcount -= 1;
   1496  1.1  christos 	    }
   1497  1.1  christos 	  else if (local_got_refcounts != NULL)
   1498  1.1  christos 	    {
   1499  1.1  christos 	      if (local_got_refcounts[r_symndx] > 0)
   1500  1.1  christos 		local_got_refcounts[r_symndx] -= 1;
   1501  1.1  christos 	    }
   1502  1.1  christos 	  break;
   1503  1.1  christos 
   1504  1.1  christos 	case R_390_8:
   1505  1.1  christos 	case R_390_12:
   1506  1.1  christos 	case R_390_16:
   1507  1.1  christos 	case R_390_20:
   1508  1.1  christos 	case R_390_32:
   1509  1.1  christos 	case R_390_64:
   1510  1.1  christos 	case R_390_PC16:
   1511  1.1  christos 	case R_390_PC12DBL:
   1512  1.1  christos 	case R_390_PC16DBL:
   1513  1.1  christos 	case R_390_PC24DBL:
   1514  1.1  christos 	case R_390_PC32:
   1515  1.1  christos 	case R_390_PC32DBL:
   1516  1.1  christos 	case R_390_PC64:
   1517  1.6  christos 	  if (bfd_link_pic (info))
   1518  1.1  christos 	    break;
   1519  1.1  christos 	  /* Fall through */
   1520  1.1  christos 
   1521  1.1  christos 	case R_390_PLT12DBL:
   1522  1.1  christos 	case R_390_PLT16DBL:
   1523  1.1  christos 	case R_390_PLT24DBL:
   1524  1.1  christos 	case R_390_PLT32:
   1525  1.1  christos 	case R_390_PLT32DBL:
   1526  1.1  christos 	case R_390_PLT64:
   1527  1.1  christos 	case R_390_PLTOFF16:
   1528  1.1  christos 	case R_390_PLTOFF32:
   1529  1.1  christos 	case R_390_PLTOFF64:
   1530  1.1  christos 	  if (h != NULL)
   1531  1.1  christos 	    {
   1532  1.1  christos 	      if (h->plt.refcount > 0)
   1533  1.1  christos 		h->plt.refcount -= 1;
   1534  1.1  christos 	    }
   1535  1.1  christos 	  break;
   1536  1.1  christos 
   1537  1.1  christos 	case R_390_GOTPLT12:
   1538  1.1  christos 	case R_390_GOTPLT16:
   1539  1.1  christos 	case R_390_GOTPLT20:
   1540  1.1  christos 	case R_390_GOTPLT32:
   1541  1.1  christos 	case R_390_GOTPLT64:
   1542  1.1  christos 	case R_390_GOTPLTENT:
   1543  1.1  christos 	  if (h != NULL)
   1544  1.1  christos 	    {
   1545  1.1  christos 	      if (h->plt.refcount > 0)
   1546  1.1  christos 		{
   1547  1.1  christos 		  ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
   1548  1.1  christos 		  h->plt.refcount -= 1;
   1549  1.1  christos 		}
   1550  1.1  christos 	    }
   1551  1.1  christos 	  else if (local_got_refcounts != NULL)
   1552  1.1  christos 	    {
   1553  1.1  christos 	      if (local_got_refcounts[r_symndx] > 0)
   1554  1.1  christos 		local_got_refcounts[r_symndx] -= 1;
   1555  1.1  christos 	    }
   1556  1.1  christos 	  break;
   1557  1.1  christos 
   1558  1.1  christos 	default:
   1559  1.1  christos 	  break;
   1560  1.1  christos 	}
   1561  1.1  christos     }
   1562  1.1  christos 
   1563  1.1  christos   return TRUE;
   1564  1.1  christos }
   1565  1.1  christos 
   1566  1.1  christos /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
   1567  1.1  christos    entry but we found we will not create any.  Called when we find we will
   1568  1.1  christos    not have any PLT for this symbol, by for example
   1569  1.1  christos    elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
   1570  1.1  christos    or elf_s390_size_dynamic_sections if no dynamic sections will be
   1571  1.1  christos    created (we're only linking static objects).  */
   1572  1.1  christos 
   1573  1.1  christos static void
   1574  1.1  christos elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
   1575  1.1  christos {
   1576  1.1  christos   if (h->elf.root.type == bfd_link_hash_warning)
   1577  1.1  christos     h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
   1578  1.1  christos 
   1579  1.1  christos   if (h->gotplt_refcount <= 0)
   1580  1.1  christos     return;
   1581  1.1  christos 
   1582  1.1  christos   /* We simply add the number of gotplt references to the number
   1583  1.1  christos    * of got references for this symbol.  */
   1584  1.1  christos   h->elf.got.refcount += h->gotplt_refcount;
   1585  1.1  christos   h->gotplt_refcount = -1;
   1586  1.1  christos }
   1587  1.1  christos 
   1588  1.1  christos /* Adjust a symbol defined by a dynamic object and referenced by a
   1589  1.1  christos    regular object.  The current definition is in some section of the
   1590  1.1  christos    dynamic object, but we're not including those sections.  We have to
   1591  1.1  christos    change the definition to something the rest of the link can
   1592  1.1  christos    understand.  */
   1593  1.1  christos 
   1594  1.1  christos static bfd_boolean
   1595  1.1  christos elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
   1596  1.1  christos 				struct elf_link_hash_entry *h)
   1597  1.1  christos {
   1598  1.1  christos   struct elf_s390_link_hash_table *htab;
   1599  1.1  christos   asection *s;
   1600  1.1  christos 
   1601  1.1  christos   /* STT_GNU_IFUNC symbol must go through PLT. */
   1602  1.1  christos   if (s390_is_ifunc_symbol_p (h))
   1603  1.6  christos     {
   1604  1.6  christos       /* All local STT_GNU_IFUNC references must be treated as local
   1605  1.6  christos 	 calls via local PLT.  */
   1606  1.6  christos       if (h->ref_regular && SYMBOL_CALLS_LOCAL (info, h))
   1607  1.6  christos 	{
   1608  1.6  christos 	  bfd_size_type pc_count = 0, count = 0;
   1609  1.6  christos 	  struct elf_dyn_relocs **pp;
   1610  1.6  christos 	  struct elf_s390_link_hash_entry *eh;
   1611  1.6  christos 	  struct elf_dyn_relocs *p;
   1612  1.6  christos 
   1613  1.6  christos 	  eh = (struct elf_s390_link_hash_entry *) h;
   1614  1.6  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   1615  1.6  christos 	    {
   1616  1.6  christos 	      pc_count += p->pc_count;
   1617  1.6  christos 	      p->count -= p->pc_count;
   1618  1.6  christos 	      p->pc_count = 0;
   1619  1.6  christos 	      count += p->count;
   1620  1.6  christos 	      if (p->count == 0)
   1621  1.6  christos 		*pp = p->next;
   1622  1.6  christos 	      else
   1623  1.6  christos 		pp = &p->next;
   1624  1.6  christos 	    }
   1625  1.6  christos 
   1626  1.6  christos 	  if (pc_count || count)
   1627  1.6  christos 	    {
   1628  1.6  christos 	      h->needs_plt = 1;
   1629  1.6  christos 	      h->non_got_ref = 1;
   1630  1.6  christos 	      if (h->plt.refcount <= 0)
   1631  1.6  christos 		h->plt.refcount = 1;
   1632  1.6  christos 	      else
   1633  1.6  christos 		h->plt.refcount += 1;
   1634  1.6  christos 	    }
   1635  1.6  christos 	}
   1636  1.6  christos 
   1637  1.6  christos       if (h->plt.refcount <= 0)
   1638  1.6  christos 	{
   1639  1.6  christos 	  h->plt.offset = (bfd_vma) -1;
   1640  1.6  christos 	  h->needs_plt = 0;
   1641  1.6  christos 	}
   1642  1.6  christos       return TRUE;
   1643  1.6  christos     }
   1644  1.1  christos 
   1645  1.1  christos   /* If this is a function, put it in the procedure linkage table.  We
   1646  1.1  christos      will fill in the contents of the procedure linkage table later
   1647  1.1  christos      (although we could actually do it here).  */
   1648  1.1  christos   if (h->type == STT_FUNC
   1649  1.1  christos       || h->needs_plt)
   1650  1.1  christos     {
   1651  1.1  christos       if (h->plt.refcount <= 0
   1652  1.1  christos 	  || SYMBOL_CALLS_LOCAL (info, h)
   1653  1.1  christos 	  || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
   1654  1.1  christos 	      && h->root.type == bfd_link_hash_undefweak))
   1655  1.1  christos 	{
   1656  1.1  christos 	  /* This case can occur if we saw a PLT32 reloc in an input
   1657  1.1  christos 	     file, but the symbol was never referred to by a dynamic
   1658  1.1  christos 	     object, or if all references were garbage collected.  In
   1659  1.1  christos 	     such a case, we don't actually need to build a procedure
   1660  1.1  christos 	     linkage table, and we can just do a PC32 reloc instead.  */
   1661  1.1  christos 	  h->plt.offset = (bfd_vma) -1;
   1662  1.1  christos 	  h->needs_plt = 0;
   1663  1.1  christos 	  elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1664  1.1  christos 	}
   1665  1.1  christos 
   1666  1.1  christos       return TRUE;
   1667  1.1  christos     }
   1668  1.1  christos   else
   1669  1.1  christos     /* It's possible that we incorrectly decided a .plt reloc was
   1670  1.1  christos        needed for an R_390_PC32 reloc to a non-function sym in
   1671  1.1  christos        check_relocs.  We can't decide accurately between function and
   1672  1.1  christos        non-function syms in check-relocs;  Objects loaded later in
   1673  1.1  christos        the link may change h->type.  So fix it now.  */
   1674  1.1  christos     h->plt.offset = (bfd_vma) -1;
   1675  1.1  christos 
   1676  1.1  christos   /* If this is a weak symbol, and there is a real definition, the
   1677  1.1  christos      processor independent code will have arranged for us to see the
   1678  1.1  christos      real definition first, and we can just use the same value.  */
   1679  1.1  christos   if (h->u.weakdef != NULL)
   1680  1.1  christos     {
   1681  1.1  christos       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
   1682  1.1  christos 		  || h->u.weakdef->root.type == bfd_link_hash_defweak);
   1683  1.1  christos       h->root.u.def.section = h->u.weakdef->root.u.def.section;
   1684  1.1  christos       h->root.u.def.value = h->u.weakdef->root.u.def.value;
   1685  1.1  christos       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
   1686  1.1  christos 	h->non_got_ref = h->u.weakdef->non_got_ref;
   1687  1.1  christos       return TRUE;
   1688  1.1  christos     }
   1689  1.1  christos 
   1690  1.1  christos   /* This is a reference to a symbol defined by a dynamic object which
   1691  1.1  christos      is not a function.  */
   1692  1.1  christos 
   1693  1.1  christos   /* If we are creating a shared library, we must presume that the
   1694  1.1  christos      only references to the symbol are via the global offset table.
   1695  1.1  christos      For such cases we need not do anything here; the relocations will
   1696  1.1  christos      be handled correctly by relocate_section.  */
   1697  1.6  christos   if (bfd_link_pic (info))
   1698  1.1  christos     return TRUE;
   1699  1.1  christos 
   1700  1.1  christos   /* If there are no references to this symbol that do not use the
   1701  1.1  christos      GOT, we don't need to generate a copy reloc.  */
   1702  1.1  christos   if (!h->non_got_ref)
   1703  1.1  christos     return TRUE;
   1704  1.1  christos 
   1705  1.1  christos   /* If -z nocopyreloc was given, we won't generate them either.  */
   1706  1.1  christos   if (info->nocopyreloc)
   1707  1.1  christos     {
   1708  1.1  christos       h->non_got_ref = 0;
   1709  1.1  christos       return TRUE;
   1710  1.1  christos     }
   1711  1.1  christos 
   1712  1.1  christos   if (ELIMINATE_COPY_RELOCS)
   1713  1.1  christos     {
   1714  1.1  christos       struct elf_s390_link_hash_entry * eh;
   1715  1.1  christos       struct elf_dyn_relocs *p;
   1716  1.1  christos 
   1717  1.1  christos       eh = (struct elf_s390_link_hash_entry *) h;
   1718  1.1  christos       for (p = eh->dyn_relocs; p != NULL; p = p->next)
   1719  1.1  christos 	{
   1720  1.1  christos 	  s = p->sec->output_section;
   1721  1.1  christos 	  if (s != NULL && (s->flags & SEC_READONLY) != 0)
   1722  1.1  christos 	    break;
   1723  1.1  christos 	}
   1724  1.1  christos 
   1725  1.1  christos       /* If we didn't find any dynamic relocs in read-only sections, then
   1726  1.1  christos 	 we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
   1727  1.1  christos       if (p == NULL)
   1728  1.1  christos 	{
   1729  1.1  christos 	  h->non_got_ref = 0;
   1730  1.1  christos 	  return TRUE;
   1731  1.1  christos 	}
   1732  1.1  christos     }
   1733  1.1  christos 
   1734  1.1  christos   /* We must allocate the symbol in our .dynbss section, which will
   1735  1.1  christos      become part of the .bss section of the executable.  There will be
   1736  1.1  christos      an entry for this symbol in the .dynsym section.  The dynamic
   1737  1.1  christos      object will contain position independent code, so all references
   1738  1.1  christos      from the dynamic object to this symbol will go through the global
   1739  1.1  christos      offset table.  The dynamic linker will use the .dynsym entry to
   1740  1.1  christos      determine the address it must put in the global offset table, so
   1741  1.1  christos      both the dynamic object and the regular object will refer to the
   1742  1.1  christos      same memory location for the variable.  */
   1743  1.1  christos 
   1744  1.1  christos   htab = elf_s390_hash_table (info);
   1745  1.1  christos   if (htab == NULL)
   1746  1.1  christos     return FALSE;
   1747  1.1  christos 
   1748  1.1  christos   /* We must generate a R_390_COPY reloc to tell the dynamic linker to
   1749  1.1  christos      copy the initial value out of the dynamic object and into the
   1750  1.1  christos      runtime process image.  */
   1751  1.1  christos   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
   1752  1.1  christos     {
   1753  1.1  christos       htab->srelbss->size += sizeof (Elf64_External_Rela);
   1754  1.1  christos       h->needs_copy = 1;
   1755  1.1  christos     }
   1756  1.1  christos 
   1757  1.1  christos   s = htab->sdynbss;
   1758  1.1  christos 
   1759  1.3  christos   return _bfd_elf_adjust_dynamic_copy (info, h, s);
   1760  1.1  christos }
   1761  1.1  christos 
   1762  1.1  christos /* Allocate space in .plt, .got and associated reloc sections for
   1763  1.1  christos    dynamic relocs.  */
   1764  1.1  christos 
   1765  1.1  christos static bfd_boolean
   1766  1.1  christos allocate_dynrelocs (struct elf_link_hash_entry *h,
   1767  1.1  christos 		    void * inf)
   1768  1.1  christos {
   1769  1.1  christos   struct bfd_link_info *info;
   1770  1.1  christos   struct elf_s390_link_hash_table *htab;
   1771  1.1  christos   struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
   1772  1.1  christos   struct elf_dyn_relocs *p;
   1773  1.1  christos 
   1774  1.1  christos   if (h->root.type == bfd_link_hash_indirect)
   1775  1.1  christos     return TRUE;
   1776  1.1  christos 
   1777  1.1  christos   info = (struct bfd_link_info *) inf;
   1778  1.1  christos   htab = elf_s390_hash_table (info);
   1779  1.1  christos   if (htab == NULL)
   1780  1.1  christos     return FALSE;
   1781  1.1  christos 
   1782  1.1  christos   /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
   1783  1.1  christos      here if it is defined and referenced in a non-shared object.  */
   1784  1.1  christos   if (s390_is_ifunc_symbol_p (h) && h->def_regular)
   1785  1.6  christos     return s390_elf_allocate_ifunc_dyn_relocs (info, h);
   1786  1.1  christos   else if (htab->elf.dynamic_sections_created
   1787  1.1  christos 	   && h->plt.refcount > 0)
   1788  1.1  christos     {
   1789  1.1  christos       /* Make sure this symbol is output as a dynamic symbol.
   1790  1.1  christos 	 Undefined weak syms won't yet be marked as dynamic.  */
   1791  1.1  christos       if (h->dynindx == -1
   1792  1.1  christos 	  && !h->forced_local)
   1793  1.1  christos 	{
   1794  1.1  christos 	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1795  1.1  christos 	    return FALSE;
   1796  1.1  christos 	}
   1797  1.1  christos 
   1798  1.6  christos       if (bfd_link_pic (info)
   1799  1.1  christos 	  || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
   1800  1.1  christos 	{
   1801  1.1  christos 	  asection *s = htab->elf.splt;
   1802  1.1  christos 
   1803  1.1  christos 	  /* If this is the first .plt entry, make room for the special
   1804  1.1  christos 	     first entry.  */
   1805  1.1  christos 	  if (s->size == 0)
   1806  1.1  christos 	    s->size += PLT_FIRST_ENTRY_SIZE;
   1807  1.1  christos 
   1808  1.1  christos 	  h->plt.offset = s->size;
   1809  1.1  christos 
   1810  1.1  christos 	  /* If this symbol is not defined in a regular file, and we are
   1811  1.1  christos 	     not generating a shared library, then set the symbol to this
   1812  1.1  christos 	     location in the .plt.  This is required to make function
   1813  1.1  christos 	     pointers compare as equal between the normal executable and
   1814  1.1  christos 	     the shared library.  */
   1815  1.6  christos 	  if (! bfd_link_pic (info)
   1816  1.1  christos 	      && !h->def_regular)
   1817  1.1  christos 	    {
   1818  1.1  christos 	      h->root.u.def.section = s;
   1819  1.1  christos 	      h->root.u.def.value = h->plt.offset;
   1820  1.1  christos 	    }
   1821  1.1  christos 
   1822  1.1  christos 	  /* Make room for this entry.  */
   1823  1.1  christos 	  s->size += PLT_ENTRY_SIZE;
   1824  1.1  christos 
   1825  1.1  christos 	  /* We also need to make an entry in the .got.plt section, which
   1826  1.1  christos 	     will be placed in the .got section by the linker script.  */
   1827  1.1  christos 	  htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
   1828  1.1  christos 
   1829  1.1  christos 	  /* We also need to make an entry in the .rela.plt section.  */
   1830  1.1  christos 	  htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
   1831  1.1  christos 	}
   1832  1.1  christos       else
   1833  1.1  christos 	{
   1834  1.1  christos 	  h->plt.offset = (bfd_vma) -1;
   1835  1.1  christos 	  h->needs_plt = 0;
   1836  1.1  christos 	  elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1837  1.1  christos 	}
   1838  1.1  christos     }
   1839  1.1  christos   else
   1840  1.1  christos     {
   1841  1.1  christos       h->plt.offset = (bfd_vma) -1;
   1842  1.1  christos       h->needs_plt = 0;
   1843  1.1  christos       elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1844  1.1  christos     }
   1845  1.1  christos 
   1846  1.1  christos   /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
   1847  1.1  christos      the binary, we can optimize a bit. IE64 and GOTIE64 get converted
   1848  1.1  christos      to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
   1849  1.1  christos      we can save the dynamic TLS relocation.  */
   1850  1.1  christos   if (h->got.refcount > 0
   1851  1.6  christos       && !bfd_link_pic (info)
   1852  1.1  christos       && h->dynindx == -1
   1853  1.1  christos       && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
   1854  1.1  christos     {
   1855  1.1  christos       if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
   1856  1.1  christos 	/* For the GOTIE access without a literal pool entry the offset has
   1857  1.1  christos 	   to be stored somewhere. The immediate value in the instruction
   1858  1.1  christos 	   is not bit enough so the value is stored in the got.  */
   1859  1.1  christos 	{
   1860  1.1  christos 	  h->got.offset = htab->elf.sgot->size;
   1861  1.1  christos 	  htab->elf.sgot->size += GOT_ENTRY_SIZE;
   1862  1.1  christos 	}
   1863  1.1  christos       else
   1864  1.1  christos 	h->got.offset = (bfd_vma) -1;
   1865  1.1  christos     }
   1866  1.1  christos   else if (h->got.refcount > 0)
   1867  1.1  christos     {
   1868  1.1  christos       asection *s;
   1869  1.1  christos       bfd_boolean dyn;
   1870  1.1  christos       int tls_type = elf_s390_hash_entry(h)->tls_type;
   1871  1.1  christos 
   1872  1.1  christos       /* Make sure this symbol is output as a dynamic symbol.
   1873  1.1  christos 	 Undefined weak syms won't yet be marked as dynamic.  */
   1874  1.1  christos       if (h->dynindx == -1
   1875  1.1  christos 	  && !h->forced_local)
   1876  1.1  christos 	{
   1877  1.1  christos 	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1878  1.1  christos 	    return FALSE;
   1879  1.1  christos 	}
   1880  1.1  christos 
   1881  1.1  christos       s = htab->elf.sgot;
   1882  1.1  christos       h->got.offset = s->size;
   1883  1.1  christos       s->size += GOT_ENTRY_SIZE;
   1884  1.1  christos       /* R_390_TLS_GD64 needs 2 consecutive GOT slots.  */
   1885  1.1  christos       if (tls_type == GOT_TLS_GD)
   1886  1.1  christos 	s->size += GOT_ENTRY_SIZE;
   1887  1.1  christos       dyn = htab->elf.dynamic_sections_created;
   1888  1.1  christos       /* R_390_TLS_IE64 needs one dynamic relocation,
   1889  1.1  christos 	 R_390_TLS_GD64 needs one if local symbol and two if global.  */
   1890  1.1  christos       if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
   1891  1.1  christos 	  || tls_type >= GOT_TLS_IE)
   1892  1.1  christos 	htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   1893  1.1  christos       else if (tls_type == GOT_TLS_GD)
   1894  1.1  christos 	htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
   1895  1.1  christos       else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
   1896  1.1  christos 		|| h->root.type != bfd_link_hash_undefweak)
   1897  1.6  christos 	       && (bfd_link_pic (info)
   1898  1.1  christos 		   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
   1899  1.1  christos 	htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   1900  1.1  christos     }
   1901  1.1  christos   else
   1902  1.1  christos     h->got.offset = (bfd_vma) -1;
   1903  1.1  christos 
   1904  1.1  christos   if (eh->dyn_relocs == NULL)
   1905  1.1  christos     return TRUE;
   1906  1.1  christos 
   1907  1.1  christos   /* In the shared -Bsymbolic case, discard space allocated for
   1908  1.1  christos      dynamic pc-relative relocs against symbols which turn out to be
   1909  1.1  christos      defined in regular objects.  For the normal shared case, discard
   1910  1.1  christos      space for pc-relative relocs that have become local due to symbol
   1911  1.1  christos      visibility changes.  */
   1912  1.1  christos 
   1913  1.6  christos   if (bfd_link_pic (info))
   1914  1.1  christos     {
   1915  1.1  christos       if (SYMBOL_CALLS_LOCAL (info, h))
   1916  1.1  christos 	{
   1917  1.1  christos 	  struct elf_dyn_relocs **pp;
   1918  1.1  christos 
   1919  1.1  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   1920  1.1  christos 	    {
   1921  1.1  christos 	      p->count -= p->pc_count;
   1922  1.1  christos 	      p->pc_count = 0;
   1923  1.1  christos 	      if (p->count == 0)
   1924  1.1  christos 		*pp = p->next;
   1925  1.1  christos 	      else
   1926  1.1  christos 		pp = &p->next;
   1927  1.1  christos 	    }
   1928  1.1  christos 	}
   1929  1.1  christos 
   1930  1.1  christos       /* Also discard relocs on undefined weak syms with non-default
   1931  1.1  christos 	 visibility.  */
   1932  1.1  christos       if (eh->dyn_relocs != NULL
   1933  1.1  christos 	  && h->root.type == bfd_link_hash_undefweak)
   1934  1.1  christos 	{
   1935  1.1  christos 	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   1936  1.1  christos 	    eh->dyn_relocs = NULL;
   1937  1.1  christos 
   1938  1.1  christos 	  /* Make sure undefined weak symbols are output as a dynamic
   1939  1.1  christos 	     symbol in PIEs.  */
   1940  1.1  christos 	  else if (h->dynindx == -1
   1941  1.1  christos 		   && !h->forced_local)
   1942  1.1  christos 	    {
   1943  1.1  christos 	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1944  1.1  christos 		return FALSE;
   1945  1.1  christos 	    }
   1946  1.1  christos 	}
   1947  1.1  christos     }
   1948  1.1  christos   else if (ELIMINATE_COPY_RELOCS)
   1949  1.1  christos     {
   1950  1.1  christos       /* For the non-shared case, discard space for relocs against
   1951  1.1  christos 	 symbols which turn out to need copy relocs or are not
   1952  1.1  christos 	 dynamic.  */
   1953  1.1  christos 
   1954  1.1  christos       if (!h->non_got_ref
   1955  1.1  christos 	  && ((h->def_dynamic
   1956  1.1  christos 	       && !h->def_regular)
   1957  1.1  christos 	      || (htab->elf.dynamic_sections_created
   1958  1.1  christos 		  && (h->root.type == bfd_link_hash_undefweak
   1959  1.1  christos 		      || h->root.type == bfd_link_hash_undefined))))
   1960  1.1  christos 	{
   1961  1.1  christos 	  /* Make sure this symbol is output as a dynamic symbol.
   1962  1.1  christos 	     Undefined weak syms won't yet be marked as dynamic.  */
   1963  1.1  christos 	  if (h->dynindx == -1
   1964  1.1  christos 	      && !h->forced_local)
   1965  1.1  christos 	    {
   1966  1.1  christos 	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1967  1.1  christos 		return FALSE;
   1968  1.1  christos 	    }
   1969  1.1  christos 
   1970  1.1  christos 	  /* If that succeeded, we know we'll be keeping all the
   1971  1.1  christos 	     relocs.  */
   1972  1.1  christos 	  if (h->dynindx != -1)
   1973  1.1  christos 	    goto keep;
   1974  1.1  christos 	}
   1975  1.1  christos 
   1976  1.1  christos       eh->dyn_relocs = NULL;
   1977  1.1  christos 
   1978  1.1  christos     keep: ;
   1979  1.1  christos     }
   1980  1.1  christos 
   1981  1.1  christos   /* Finally, allocate space.  */
   1982  1.1  christos   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   1983  1.1  christos     {
   1984  1.1  christos       asection *sreloc = elf_section_data (p->sec)->sreloc;
   1985  1.1  christos       sreloc->size += p->count * sizeof (Elf64_External_Rela);
   1986  1.1  christos     }
   1987  1.1  christos 
   1988  1.1  christos   return TRUE;
   1989  1.1  christos }
   1990  1.1  christos 
   1991  1.1  christos /* Find any dynamic relocs that apply to read-only sections.  */
   1992  1.1  christos 
   1993  1.1  christos static bfd_boolean
   1994  1.1  christos readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
   1995  1.1  christos {
   1996  1.1  christos   struct elf_s390_link_hash_entry *eh;
   1997  1.1  christos   struct elf_dyn_relocs *p;
   1998  1.1  christos 
   1999  1.1  christos   eh = (struct elf_s390_link_hash_entry *) h;
   2000  1.1  christos   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   2001  1.1  christos     {
   2002  1.1  christos       asection *s = p->sec->output_section;
   2003  1.1  christos 
   2004  1.1  christos       if (s != NULL && (s->flags & SEC_READONLY) != 0)
   2005  1.1  christos 	{
   2006  1.1  christos 	  struct bfd_link_info *info = (struct bfd_link_info *) inf;
   2007  1.1  christos 
   2008  1.1  christos 	  info->flags |= DF_TEXTREL;
   2009  1.1  christos 
   2010  1.1  christos 	  /* Not an error, just cut short the traversal.  */
   2011  1.1  christos 	  return FALSE;
   2012  1.1  christos 	}
   2013  1.1  christos     }
   2014  1.1  christos   return TRUE;
   2015  1.1  christos }
   2016  1.1  christos 
   2017  1.1  christos /* Set the sizes of the dynamic sections.  */
   2018  1.1  christos 
   2019  1.1  christos static bfd_boolean
   2020  1.1  christos elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
   2021  1.1  christos 				struct bfd_link_info *info)
   2022  1.1  christos {
   2023  1.1  christos   struct elf_s390_link_hash_table *htab;
   2024  1.1  christos   bfd *dynobj;
   2025  1.1  christos   asection *s;
   2026  1.1  christos   bfd_boolean relocs;
   2027  1.1  christos   bfd *ibfd;
   2028  1.1  christos 
   2029  1.1  christos   htab = elf_s390_hash_table (info);
   2030  1.1  christos   if (htab == NULL)
   2031  1.1  christos     return FALSE;
   2032  1.1  christos 
   2033  1.1  christos   dynobj = htab->elf.dynobj;
   2034  1.1  christos   if (dynobj == NULL)
   2035  1.1  christos     abort ();
   2036  1.1  christos 
   2037  1.1  christos   if (htab->elf.dynamic_sections_created)
   2038  1.1  christos     {
   2039  1.1  christos       /* Set the contents of the .interp section to the interpreter.  */
   2040  1.6  christos       if (bfd_link_executable (info) && !info->nointerp)
   2041  1.1  christos 	{
   2042  1.1  christos 	  s = bfd_get_linker_section (dynobj, ".interp");
   2043  1.1  christos 	  if (s == NULL)
   2044  1.1  christos 	    abort ();
   2045  1.1  christos 	  s->size = sizeof ELF_DYNAMIC_INTERPRETER;
   2046  1.1  christos 	  s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
   2047  1.1  christos 	}
   2048  1.1  christos     }
   2049  1.1  christos 
   2050  1.1  christos   /* Set up .got offsets for local syms, and space for local dynamic
   2051  1.1  christos      relocs.  */
   2052  1.3  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   2053  1.1  christos     {
   2054  1.1  christos       bfd_signed_vma *local_got;
   2055  1.1  christos       bfd_signed_vma *end_local_got;
   2056  1.1  christos       char *local_tls_type;
   2057  1.1  christos       bfd_size_type locsymcount;
   2058  1.1  christos       Elf_Internal_Shdr *symtab_hdr;
   2059  1.1  christos       asection *srela;
   2060  1.1  christos       struct plt_entry *local_plt;
   2061  1.1  christos       unsigned int i;
   2062  1.1  christos 
   2063  1.1  christos       if (! is_s390_elf (ibfd))
   2064  1.1  christos 	continue;
   2065  1.1  christos 
   2066  1.1  christos       for (s = ibfd->sections; s != NULL; s = s->next)
   2067  1.1  christos 	{
   2068  1.1  christos 	  struct elf_dyn_relocs *p;
   2069  1.1  christos 
   2070  1.1  christos 	  for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
   2071  1.1  christos 	    {
   2072  1.1  christos 	      if (!bfd_is_abs_section (p->sec)
   2073  1.1  christos 		  && bfd_is_abs_section (p->sec->output_section))
   2074  1.1  christos 		{
   2075  1.1  christos 		  /* Input section has been discarded, either because
   2076  1.1  christos 		     it is a copy of a linkonce section or due to
   2077  1.1  christos 		     linker script /DISCARD/, so we'll be discarding
   2078  1.1  christos 		     the relocs too.  */
   2079  1.1  christos 		}
   2080  1.1  christos 	      else if (p->count != 0)
   2081  1.1  christos 		{
   2082  1.1  christos 		  srela = elf_section_data (p->sec)->sreloc;
   2083  1.1  christos 		  srela->size += p->count * sizeof (Elf64_External_Rela);
   2084  1.1  christos 		  if ((p->sec->output_section->flags & SEC_READONLY) != 0)
   2085  1.1  christos 		    info->flags |= DF_TEXTREL;
   2086  1.1  christos 		}
   2087  1.1  christos 	    }
   2088  1.1  christos 	}
   2089  1.1  christos 
   2090  1.1  christos       local_got = elf_local_got_refcounts (ibfd);
   2091  1.1  christos       if (!local_got)
   2092  1.1  christos 	continue;
   2093  1.1  christos 
   2094  1.1  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   2095  1.1  christos       locsymcount = symtab_hdr->sh_info;
   2096  1.1  christos       end_local_got = local_got + locsymcount;
   2097  1.1  christos       local_tls_type = elf_s390_local_got_tls_type (ibfd);
   2098  1.1  christos       s = htab->elf.sgot;
   2099  1.1  christos       srela = htab->elf.srelgot;
   2100  1.1  christos       for (; local_got < end_local_got; ++local_got, ++local_tls_type)
   2101  1.1  christos 	{
   2102  1.1  christos 	  if (*local_got > 0)
   2103  1.1  christos 	    {
   2104  1.1  christos 	      *local_got = s->size;
   2105  1.1  christos 	      s->size += GOT_ENTRY_SIZE;
   2106  1.1  christos 	      if (*local_tls_type == GOT_TLS_GD)
   2107  1.1  christos 		s->size += GOT_ENTRY_SIZE;
   2108  1.6  christos 	      if (bfd_link_pic (info))
   2109  1.1  christos 		srela->size += sizeof (Elf64_External_Rela);
   2110  1.1  christos 	    }
   2111  1.1  christos 	  else
   2112  1.1  christos 	    *local_got = (bfd_vma) -1;
   2113  1.1  christos 	}
   2114  1.1  christos 
   2115  1.1  christos       local_plt = elf_s390_local_plt (ibfd);
   2116  1.1  christos       for (i = 0; i < symtab_hdr->sh_info; i++)
   2117  1.1  christos 	{
   2118  1.1  christos 	  if (local_plt[i].plt.refcount > 0)
   2119  1.1  christos 	    {
   2120  1.1  christos 	      local_plt[i].plt.offset = htab->elf.iplt->size;
   2121  1.1  christos 	      htab->elf.iplt->size += PLT_ENTRY_SIZE;
   2122  1.1  christos 	      htab->elf.igotplt->size += GOT_ENTRY_SIZE;
   2123  1.1  christos 	      htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
   2124  1.1  christos 	    }
   2125  1.1  christos 	  else
   2126  1.1  christos 	    local_plt[i].plt.offset = (bfd_vma) -1;
   2127  1.1  christos 	}
   2128  1.1  christos     }
   2129  1.1  christos 
   2130  1.1  christos   if (htab->tls_ldm_got.refcount > 0)
   2131  1.1  christos     {
   2132  1.1  christos       /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
   2133  1.1  christos 	 relocs.  */
   2134  1.1  christos       htab->tls_ldm_got.offset = htab->elf.sgot->size;
   2135  1.1  christos       htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
   2136  1.1  christos       htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   2137  1.1  christos     }
   2138  1.1  christos   else
   2139  1.1  christos     htab->tls_ldm_got.offset = -1;
   2140  1.1  christos 
   2141  1.1  christos   /* Allocate global sym .plt and .got entries, and space for global
   2142  1.1  christos      sym dynamic relocs.  */
   2143  1.1  christos   elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
   2144  1.1  christos 
   2145  1.1  christos   /* We now have determined the sizes of the various dynamic sections.
   2146  1.1  christos      Allocate memory for them.  */
   2147  1.1  christos   relocs = FALSE;
   2148  1.1  christos   for (s = dynobj->sections; s != NULL; s = s->next)
   2149  1.1  christos     {
   2150  1.1  christos       if ((s->flags & SEC_LINKER_CREATED) == 0)
   2151  1.1  christos 	continue;
   2152  1.1  christos 
   2153  1.1  christos       if (s == htab->elf.splt
   2154  1.1  christos 	  || s == htab->elf.sgot
   2155  1.1  christos 	  || s == htab->elf.sgotplt
   2156  1.1  christos 	  || s == htab->sdynbss
   2157  1.1  christos 	  || s == htab->elf.iplt
   2158  1.1  christos 	  || s == htab->elf.igotplt
   2159  1.1  christos 	  || s == htab->irelifunc)
   2160  1.1  christos 	{
   2161  1.1  christos 	  /* Strip this section if we don't need it; see the
   2162  1.1  christos 	     comment below.  */
   2163  1.1  christos 	}
   2164  1.1  christos       else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
   2165  1.1  christos 	{
   2166  1.1  christos 	  if (s->size != 0 && s != htab->elf.srelplt)
   2167  1.1  christos 	    relocs = TRUE;
   2168  1.1  christos 
   2169  1.1  christos 	  /* We use the reloc_count field as a counter if we need
   2170  1.1  christos 	     to copy relocs into the output file.  */
   2171  1.1  christos 	  s->reloc_count = 0;
   2172  1.1  christos 	}
   2173  1.1  christos       else
   2174  1.1  christos 	{
   2175  1.1  christos 	  /* It's not one of our sections, so don't allocate space.  */
   2176  1.1  christos 	  continue;
   2177  1.1  christos 	}
   2178  1.1  christos 
   2179  1.1  christos       if (s->size == 0)
   2180  1.1  christos 	{
   2181  1.1  christos 	  /* If we don't need this section, strip it from the
   2182  1.1  christos 	     output file.  This is to handle .rela.bss and
   2183  1.1  christos 	     .rela.plt.  We must create it in
   2184  1.1  christos 	     create_dynamic_sections, because it must be created
   2185  1.1  christos 	     before the linker maps input sections to output
   2186  1.1  christos 	     sections.  The linker does that before
   2187  1.1  christos 	     adjust_dynamic_symbol is called, and it is that
   2188  1.1  christos 	     function which decides whether anything needs to go
   2189  1.1  christos 	     into these sections.  */
   2190  1.1  christos 
   2191  1.1  christos 	  s->flags |= SEC_EXCLUDE;
   2192  1.1  christos 	  continue;
   2193  1.1  christos 	}
   2194  1.1  christos 
   2195  1.1  christos       if ((s->flags & SEC_HAS_CONTENTS) == 0)
   2196  1.1  christos 	continue;
   2197  1.1  christos 
   2198  1.1  christos       /* Allocate memory for the section contents.  We use bfd_zalloc
   2199  1.1  christos 	 here in case unused entries are not reclaimed before the
   2200  1.1  christos 	 section's contents are written out.  This should not happen,
   2201  1.1  christos 	 but this way if it does, we get a R_390_NONE reloc instead
   2202  1.1  christos 	 of garbage.  */
   2203  1.1  christos       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
   2204  1.1  christos       if (s->contents == NULL)
   2205  1.1  christos 	return FALSE;
   2206  1.1  christos     }
   2207  1.1  christos 
   2208  1.1  christos   if (htab->elf.dynamic_sections_created)
   2209  1.1  christos     {
   2210  1.1  christos       /* Add some entries to the .dynamic section.  We fill in the
   2211  1.1  christos 	 values later, in elf_s390_finish_dynamic_sections, but we
   2212  1.1  christos 	 must add the entries now so that we get the correct size for
   2213  1.1  christos 	 the .dynamic section.  The DT_DEBUG entry is filled in by the
   2214  1.1  christos 	 dynamic linker and used by the debugger.  */
   2215  1.1  christos #define add_dynamic_entry(TAG, VAL) \
   2216  1.1  christos   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
   2217  1.1  christos 
   2218  1.6  christos       if (bfd_link_executable (info))
   2219  1.1  christos 	{
   2220  1.1  christos 	  if (!add_dynamic_entry (DT_DEBUG, 0))
   2221  1.1  christos 	    return FALSE;
   2222  1.1  christos 	}
   2223  1.1  christos 
   2224  1.1  christos       if (htab->elf.splt->size != 0)
   2225  1.1  christos 	{
   2226  1.1  christos 	  if (!add_dynamic_entry (DT_PLTGOT, 0)
   2227  1.1  christos 	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
   2228  1.1  christos 	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
   2229  1.1  christos 	      || !add_dynamic_entry (DT_JMPREL, 0))
   2230  1.1  christos 	    return FALSE;
   2231  1.1  christos 	}
   2232  1.1  christos 
   2233  1.1  christos       if (relocs)
   2234  1.1  christos 	{
   2235  1.1  christos 	  if (!add_dynamic_entry (DT_RELA, 0)
   2236  1.1  christos 	      || !add_dynamic_entry (DT_RELASZ, 0)
   2237  1.1  christos 	      || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
   2238  1.1  christos 	    return FALSE;
   2239  1.1  christos 
   2240  1.1  christos 	  /* If any dynamic relocs apply to a read-only section,
   2241  1.1  christos 	     then we need a DT_TEXTREL entry.  */
   2242  1.1  christos 	  if ((info->flags & DF_TEXTREL) == 0)
   2243  1.1  christos 	    elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
   2244  1.1  christos 				    info);
   2245  1.1  christos 
   2246  1.1  christos 	  if ((info->flags & DF_TEXTREL) != 0)
   2247  1.1  christos 	    {
   2248  1.1  christos 	      if (!add_dynamic_entry (DT_TEXTREL, 0))
   2249  1.1  christos 		return FALSE;
   2250  1.1  christos 	    }
   2251  1.1  christos 	}
   2252  1.1  christos     }
   2253  1.1  christos #undef add_dynamic_entry
   2254  1.1  christos 
   2255  1.1  christos   return TRUE;
   2256  1.1  christos }
   2257  1.1  christos 
   2258  1.1  christos /* Return the base VMA address which should be subtracted from real addresses
   2259  1.1  christos    when resolving @dtpoff relocation.
   2260  1.1  christos    This is PT_TLS segment p_vaddr.  */
   2261  1.1  christos 
   2262  1.1  christos static bfd_vma
   2263  1.1  christos dtpoff_base (struct bfd_link_info *info)
   2264  1.1  christos {
   2265  1.1  christos   /* If tls_sec is NULL, we should have signalled an error already.  */
   2266  1.1  christos   if (elf_hash_table (info)->tls_sec == NULL)
   2267  1.1  christos     return 0;
   2268  1.1  christos   return elf_hash_table (info)->tls_sec->vma;
   2269  1.1  christos }
   2270  1.1  christos 
   2271  1.1  christos /* Return the relocation value for @tpoff relocation
   2272  1.1  christos    if STT_TLS virtual address is ADDRESS.  */
   2273  1.1  christos 
   2274  1.1  christos static bfd_vma
   2275  1.1  christos tpoff (struct bfd_link_info *info, bfd_vma address)
   2276  1.1  christos {
   2277  1.1  christos   struct elf_link_hash_table *htab = elf_hash_table (info);
   2278  1.1  christos 
   2279  1.1  christos   /* If tls_sec is NULL, we should have signalled an error already.  */
   2280  1.1  christos   if (htab->tls_sec == NULL)
   2281  1.1  christos     return 0;
   2282  1.1  christos   return htab->tls_size + htab->tls_sec->vma - address;
   2283  1.1  christos }
   2284  1.1  christos 
   2285  1.1  christos /* Complain if TLS instruction relocation is against an invalid
   2286  1.1  christos    instruction.  */
   2287  1.1  christos 
   2288  1.1  christos static void
   2289  1.1  christos invalid_tls_insn (bfd *input_bfd,
   2290  1.1  christos 		  asection *input_section,
   2291  1.1  christos 		  Elf_Internal_Rela *rel)
   2292  1.1  christos {
   2293  1.1  christos   reloc_howto_type *howto;
   2294  1.1  christos 
   2295  1.1  christos   howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
   2296  1.1  christos   (*_bfd_error_handler)
   2297  1.1  christos     (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
   2298  1.1  christos      input_bfd,
   2299  1.1  christos      input_section,
   2300  1.1  christos      (long) rel->r_offset,
   2301  1.1  christos      howto->name);
   2302  1.1  christos   bfd_set_error (bfd_error_bad_value);
   2303  1.1  christos }
   2304  1.1  christos 
   2305  1.1  christos /* Relocate a 390 ELF section.  */
   2306  1.1  christos 
   2307  1.1  christos static bfd_boolean
   2308  1.1  christos elf_s390_relocate_section (bfd *output_bfd,
   2309  1.1  christos 			   struct bfd_link_info *info,
   2310  1.1  christos 			   bfd *input_bfd,
   2311  1.1  christos 			   asection *input_section,
   2312  1.1  christos 			   bfd_byte *contents,
   2313  1.1  christos 			   Elf_Internal_Rela *relocs,
   2314  1.1  christos 			   Elf_Internal_Sym *local_syms,
   2315  1.1  christos 			   asection **local_sections)
   2316  1.1  christos {
   2317  1.1  christos   struct elf_s390_link_hash_table *htab;
   2318  1.1  christos   Elf_Internal_Shdr *symtab_hdr;
   2319  1.1  christos   struct elf_link_hash_entry **sym_hashes;
   2320  1.1  christos   bfd_vma *local_got_offsets;
   2321  1.1  christos   Elf_Internal_Rela *rel;
   2322  1.1  christos   Elf_Internal_Rela *relend;
   2323  1.1  christos 
   2324  1.1  christos   BFD_ASSERT (is_s390_elf (input_bfd));
   2325  1.1  christos 
   2326  1.1  christos   htab = elf_s390_hash_table (info);
   2327  1.1  christos   if (htab == NULL)
   2328  1.1  christos     return FALSE;
   2329  1.1  christos 
   2330  1.1  christos   symtab_hdr = &elf_symtab_hdr (input_bfd);
   2331  1.1  christos   sym_hashes = elf_sym_hashes (input_bfd);
   2332  1.1  christos   local_got_offsets = elf_local_got_offsets (input_bfd);
   2333  1.1  christos 
   2334  1.1  christos   rel = relocs;
   2335  1.1  christos   relend = relocs + input_section->reloc_count;
   2336  1.1  christos   for (; rel < relend; rel++)
   2337  1.1  christos     {
   2338  1.1  christos       unsigned int r_type;
   2339  1.1  christos       reloc_howto_type *howto;
   2340  1.1  christos       unsigned long r_symndx;
   2341  1.1  christos       struct elf_link_hash_entry *h;
   2342  1.1  christos       Elf_Internal_Sym *sym;
   2343  1.1  christos       asection *sec;
   2344  1.1  christos       bfd_vma off;
   2345  1.1  christos       bfd_vma relocation;
   2346  1.1  christos       bfd_boolean unresolved_reloc;
   2347  1.1  christos       bfd_reloc_status_type r;
   2348  1.1  christos       int tls_type;
   2349  1.1  christos       asection *base_got = htab->elf.sgot;
   2350  1.1  christos 
   2351  1.1  christos       r_type = ELF64_R_TYPE (rel->r_info);
   2352  1.1  christos       if (r_type == (int) R_390_GNU_VTINHERIT
   2353  1.1  christos 	  || r_type == (int) R_390_GNU_VTENTRY)
   2354  1.1  christos 	continue;
   2355  1.1  christos       if (r_type >= (int) R_390_max)
   2356  1.1  christos 	{
   2357  1.1  christos 	  bfd_set_error (bfd_error_bad_value);
   2358  1.1  christos 	  return FALSE;
   2359  1.1  christos 	}
   2360  1.1  christos 
   2361  1.1  christos       howto = elf_howto_table + r_type;
   2362  1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
   2363  1.1  christos 
   2364  1.1  christos       h = NULL;
   2365  1.1  christos       sym = NULL;
   2366  1.1  christos       sec = NULL;
   2367  1.1  christos       unresolved_reloc = FALSE;
   2368  1.1  christos       if (r_symndx < symtab_hdr->sh_info)
   2369  1.1  christos 	{
   2370  1.1  christos 	  sym = local_syms + r_symndx;
   2371  1.1  christos 	  sec = local_sections[r_symndx];
   2372  1.1  christos 
   2373  1.1  christos 	  if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   2374  1.1  christos 	    {
   2375  1.1  christos 	      struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
   2376  1.1  christos 	      if (local_plt == NULL)
   2377  1.1  christos 		return FALSE;
   2378  1.1  christos 
   2379  1.1  christos 	      /* Address of the PLT slot.  */
   2380  1.1  christos 	      relocation = (htab->elf.iplt->output_section->vma
   2381  1.1  christos 			    + htab->elf.iplt->output_offset
   2382  1.1  christos 			    + local_plt[r_symndx].plt.offset);
   2383  1.1  christos 
   2384  1.1  christos 	      switch (r_type)
   2385  1.1  christos 		{
   2386  1.1  christos 		case R_390_PLTOFF16:
   2387  1.1  christos 		case R_390_PLTOFF32:
   2388  1.1  christos 		case R_390_PLTOFF64:
   2389  1.1  christos 		  relocation -= htab->elf.sgot->output_section->vma;
   2390  1.1  christos 		  break;
   2391  1.1  christos 		case R_390_GOTPLT12:
   2392  1.1  christos 		case R_390_GOTPLT16:
   2393  1.1  christos 		case R_390_GOTPLT20:
   2394  1.1  christos 		case R_390_GOTPLT32:
   2395  1.1  christos 		case R_390_GOTPLT64:
   2396  1.1  christos 		case R_390_GOTPLTENT:
   2397  1.1  christos 		case R_390_GOT12:
   2398  1.1  christos 		case R_390_GOT16:
   2399  1.1  christos 		case R_390_GOT20:
   2400  1.1  christos 		case R_390_GOT32:
   2401  1.1  christos 		case R_390_GOT64:
   2402  1.1  christos 		case R_390_GOTENT:
   2403  1.1  christos 		  {
   2404  1.1  christos 		    /* Write the PLT slot address into the GOT slot.  */
   2405  1.1  christos 		    bfd_put_64 (output_bfd, relocation,
   2406  1.1  christos 				htab->elf.sgot->contents +
   2407  1.1  christos 				local_got_offsets[r_symndx]);
   2408  1.1  christos 		    relocation = (local_got_offsets[r_symndx] +
   2409  1.1  christos 				  htab->elf.sgot->output_offset);
   2410  1.1  christos 
   2411  1.1  christos 		    if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
   2412  1.1  christos 		      relocation += htab->elf.sgot->output_section->vma;
   2413  1.1  christos 		    break;
   2414  1.1  christos 		  }
   2415  1.1  christos 		default:
   2416  1.1  christos 		  break;
   2417  1.1  christos 		}
   2418  1.1  christos 	      /* The output section is needed later in
   2419  1.1  christos 		 finish_dynamic_section when creating the dynamic
   2420  1.1  christos 		 relocation.  */
   2421  1.1  christos 	      local_plt[r_symndx].sec = sec;
   2422  1.1  christos 	      goto do_relocation;
   2423  1.1  christos 	    }
   2424  1.1  christos 	  else
   2425  1.1  christos 	    relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
   2426  1.1  christos 	}
   2427  1.1  christos       else
   2428  1.1  christos 	{
   2429  1.1  christos 	  bfd_boolean warned ATTRIBUTE_UNUSED;
   2430  1.1  christos 	  bfd_boolean ignored ATTRIBUTE_UNUSED;
   2431  1.1  christos 
   2432  1.1  christos 	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
   2433  1.1  christos 				   r_symndx, symtab_hdr, sym_hashes,
   2434  1.1  christos 				   h, sec, relocation,
   2435  1.1  christos 				   unresolved_reloc, warned, ignored);
   2436  1.1  christos 	}
   2437  1.1  christos 
   2438  1.1  christos       if (sec != NULL && discarded_section (sec))
   2439  1.1  christos 	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
   2440  1.1  christos 					 rel, 1, relend, howto, 0, contents);
   2441  1.1  christos 
   2442  1.6  christos       if (bfd_link_relocatable (info))
   2443  1.1  christos 	continue;
   2444  1.1  christos 
   2445  1.1  christos       switch (r_type)
   2446  1.1  christos 	{
   2447  1.1  christos 	case R_390_GOTPLT12:
   2448  1.1  christos 	case R_390_GOTPLT16:
   2449  1.1  christos 	case R_390_GOTPLT20:
   2450  1.1  christos 	case R_390_GOTPLT32:
   2451  1.1  christos 	case R_390_GOTPLT64:
   2452  1.1  christos 	case R_390_GOTPLTENT:
   2453  1.1  christos 	  /* There are three cases for a GOTPLT relocation. 1) The
   2454  1.1  christos 	     relocation is against the jump slot entry of a plt that
   2455  1.1  christos 	     will get emitted to the output file. 2) The relocation
   2456  1.1  christos 	     is against the jump slot of a plt entry that has been
   2457  1.1  christos 	     removed. elf_s390_adjust_gotplt has created a GOT entry
   2458  1.1  christos 	     as replacement. 3) The relocation is against a local symbol.
   2459  1.1  christos 	     Cases 2) and 3) are the same as the GOT relocation code
   2460  1.1  christos 	     so we just have to test for case 1 and fall through for
   2461  1.1  christos 	     the other two.  */
   2462  1.1  christos 	  if (h != NULL && h->plt.offset != (bfd_vma) -1)
   2463  1.1  christos 	    {
   2464  1.1  christos 	      bfd_vma plt_index;
   2465  1.1  christos 
   2466  1.1  christos 	      if (s390_is_ifunc_symbol_p (h))
   2467  1.1  christos 		{
   2468  1.1  christos 		  plt_index = h->plt.offset / PLT_ENTRY_SIZE;
   2469  1.1  christos 		  relocation = (plt_index * GOT_ENTRY_SIZE +
   2470  1.1  christos 				htab->elf.igotplt->output_offset);
   2471  1.1  christos 		  if (r_type == R_390_GOTPLTENT)
   2472  1.1  christos 		    relocation += htab->elf.igotplt->output_section->vma;
   2473  1.1  christos 		}
   2474  1.1  christos 	      else
   2475  1.1  christos 		{
   2476  1.1  christos 		  /* Calc. index no.
   2477  1.1  christos 		     Current offset - size first entry / entry size.  */
   2478  1.1  christos 		  plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
   2479  1.1  christos 		    PLT_ENTRY_SIZE;
   2480  1.1  christos 
   2481  1.1  christos 		  /* Offset in GOT is PLT index plus GOT headers(3)
   2482  1.6  christos 		     times 8, addr & GOT addr.  */
   2483  1.1  christos 		  relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
   2484  1.1  christos 		  if (r_type == R_390_GOTPLTENT)
   2485  1.1  christos 		    relocation += htab->elf.sgot->output_section->vma;
   2486  1.1  christos 		}
   2487  1.1  christos 	      unresolved_reloc = FALSE;
   2488  1.1  christos 	      break;
   2489  1.1  christos 	    }
   2490  1.1  christos 	  /* Fall through.  */
   2491  1.1  christos 
   2492  1.1  christos 	case R_390_GOT12:
   2493  1.1  christos 	case R_390_GOT16:
   2494  1.1  christos 	case R_390_GOT20:
   2495  1.1  christos 	case R_390_GOT32:
   2496  1.1  christos 	case R_390_GOT64:
   2497  1.1  christos 	case R_390_GOTENT:
   2498  1.1  christos 	  /* Relocation is to the entry for this symbol in the global
   2499  1.1  christos 	     offset table.  */
   2500  1.1  christos 	  if (base_got == NULL)
   2501  1.1  christos 	    abort ();
   2502  1.1  christos 
   2503  1.1  christos 	  if (h != NULL)
   2504  1.1  christos 	    {
   2505  1.1  christos 	      bfd_boolean dyn;
   2506  1.1  christos 
   2507  1.1  christos 	      off = h->got.offset;
   2508  1.1  christos 	      dyn = htab->elf.dynamic_sections_created;
   2509  1.1  christos 
   2510  1.1  christos 	      if (s390_is_ifunc_symbol_p (h))
   2511  1.1  christos 		{
   2512  1.1  christos 		  BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
   2513  1.1  christos 		  if (off == (bfd_vma)-1)
   2514  1.1  christos 		    {
   2515  1.1  christos 		      /* No explicit GOT usage so redirect to the
   2516  1.1  christos 			 got.iplt slot.  */
   2517  1.1  christos 		      base_got = htab->elf.igotplt;
   2518  1.1  christos 		      off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
   2519  1.1  christos 		    }
   2520  1.1  christos 		  else
   2521  1.1  christos 		    {
   2522  1.1  christos 		      /* Explicit GOT slots must contain the address
   2523  1.1  christos 			 of the PLT slot. This will be handled in
   2524  1.1  christos 			 finish_dynamic_symbol.  */
   2525  1.1  christos 		    }
   2526  1.1  christos 		}
   2527  1.6  christos 	      else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
   2528  1.6  christos 							  bfd_link_pic (info),
   2529  1.6  christos 							  h)
   2530  1.6  christos 		       || (bfd_link_pic (info)
   2531  1.1  christos 			   && SYMBOL_REFERENCES_LOCAL (info, h))
   2532  1.1  christos 		       || (ELF_ST_VISIBILITY (h->other)
   2533  1.1  christos 			   && h->root.type == bfd_link_hash_undefweak))
   2534  1.1  christos 		{
   2535  1.1  christos 		  /* This is actually a static link, or it is a
   2536  1.1  christos 		     -Bsymbolic link and the symbol is defined
   2537  1.1  christos 		     locally, or the symbol was forced to be local
   2538  1.1  christos 		     because of a version file.  We must initialize
   2539  1.1  christos 		     this entry in the global offset table.  Since the
   2540  1.1  christos 		     offset must always be a multiple of 2, we use the
   2541  1.1  christos 		     least significant bit to record whether we have
   2542  1.1  christos 		     initialized it already.
   2543  1.1  christos 
   2544  1.1  christos 		     When doing a dynamic link, we create a .rel.got
   2545  1.1  christos 		     relocation entry to initialize the value.  This
   2546  1.1  christos 		     is done in the finish_dynamic_symbol routine.  */
   2547  1.1  christos 		  if ((off & 1) != 0)
   2548  1.1  christos 		    off &= ~1;
   2549  1.1  christos 		  else
   2550  1.1  christos 		    {
   2551  1.1  christos 		      bfd_put_64 (output_bfd, relocation,
   2552  1.1  christos 				  base_got->contents + off);
   2553  1.1  christos 		      h->got.offset |= 1;
   2554  1.1  christos 		    }
   2555  1.1  christos 
   2556  1.1  christos 		  if ((h->def_regular
   2557  1.6  christos 		       && bfd_link_pic (info)
   2558  1.1  christos 		       && SYMBOL_REFERENCES_LOCAL (info, h))
   2559  1.1  christos 		      /* lgrl rx,sym@GOTENT -> larl rx, sym */
   2560  1.1  christos 		      && ((r_type == R_390_GOTENT
   2561  1.1  christos 			   && (bfd_get_16 (input_bfd,
   2562  1.1  christos 					   contents + rel->r_offset - 2)
   2563  1.1  christos 			       & 0xff0f) == 0xc408)
   2564  1.1  christos 			  /* lg rx, sym@GOT(r12) -> larl rx, sym */
   2565  1.1  christos 			  || (r_type == R_390_GOT20
   2566  1.1  christos 			      && (bfd_get_32 (input_bfd,
   2567  1.1  christos 					      contents + rel->r_offset - 2)
   2568  1.1  christos 				  & 0xff00f000) == 0xe300c000
   2569  1.1  christos 			      && bfd_get_8 (input_bfd,
   2570  1.1  christos 					    contents + rel->r_offset + 3) == 0x04)))
   2571  1.1  christos 
   2572  1.1  christos 		    {
   2573  1.1  christos 		      unsigned short new_insn =
   2574  1.1  christos 			(0xc000 | (bfd_get_8 (input_bfd,
   2575  1.1  christos 					      contents + rel->r_offset - 1) & 0xf0));
   2576  1.1  christos 		      bfd_put_16 (output_bfd, new_insn,
   2577  1.1  christos 				  contents + rel->r_offset - 2);
   2578  1.1  christos 		      r_type = R_390_PC32DBL;
   2579  1.1  christos 		      rel->r_addend = 2;
   2580  1.1  christos 		      howto = elf_howto_table + r_type;
   2581  1.1  christos 		      relocation = h->root.u.def.value
   2582  1.1  christos 			+ h->root.u.def.section->output_section->vma
   2583  1.1  christos 			+ h->root.u.def.section->output_offset;
   2584  1.1  christos 		      goto do_relocation;
   2585  1.1  christos 		    }
   2586  1.1  christos 		}
   2587  1.1  christos 	      else
   2588  1.1  christos 		unresolved_reloc = FALSE;
   2589  1.1  christos 	    }
   2590  1.1  christos 	  else
   2591  1.1  christos 	    {
   2592  1.1  christos 	      if (local_got_offsets == NULL)
   2593  1.1  christos 		abort ();
   2594  1.1  christos 
   2595  1.1  christos 	      off = local_got_offsets[r_symndx];
   2596  1.1  christos 
   2597  1.1  christos 	      /* The offset must always be a multiple of 8.  We use
   2598  1.1  christos 		 the least significant bit to record whether we have
   2599  1.1  christos 		 already generated the necessary reloc.  */
   2600  1.1  christos 	      if ((off & 1) != 0)
   2601  1.1  christos 		off &= ~1;
   2602  1.1  christos 	      else
   2603  1.1  christos 		{
   2604  1.1  christos 		  bfd_put_64 (output_bfd, relocation,
   2605  1.1  christos 			      htab->elf.sgot->contents + off);
   2606  1.1  christos 
   2607  1.6  christos 		  if (bfd_link_pic (info))
   2608  1.1  christos 		    {
   2609  1.1  christos 		      asection *s;
   2610  1.1  christos 		      Elf_Internal_Rela outrel;
   2611  1.1  christos 		      bfd_byte *loc;
   2612  1.1  christos 
   2613  1.1  christos 		      s = htab->elf.srelgot;
   2614  1.1  christos 		      if (s == NULL)
   2615  1.1  christos 			abort ();
   2616  1.1  christos 
   2617  1.1  christos 		      outrel.r_offset = (htab->elf.sgot->output_section->vma
   2618  1.1  christos 					 + htab->elf.sgot->output_offset
   2619  1.1  christos 					 + off);
   2620  1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2621  1.1  christos 		      outrel.r_addend = relocation;
   2622  1.1  christos 		      loc = s->contents;
   2623  1.1  christos 		      loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
   2624  1.1  christos 		      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2625  1.1  christos 		    }
   2626  1.1  christos 
   2627  1.1  christos 		  local_got_offsets[r_symndx] |= 1;
   2628  1.1  christos 		}
   2629  1.1  christos 	    }
   2630  1.1  christos 
   2631  1.1  christos 	  if (off >= (bfd_vma) -2)
   2632  1.1  christos 	    abort ();
   2633  1.1  christos 
   2634  1.1  christos 	  relocation = base_got->output_offset + off;
   2635  1.1  christos 
   2636  1.1  christos 	  /* For @GOTENT the relocation is against the offset between
   2637  1.1  christos 	     the instruction and the symbols entry in the GOT and not
   2638  1.1  christos 	     between the start of the GOT and the symbols entry. We
   2639  1.1  christos 	     add the vma of the GOT to get the correct value.  */
   2640  1.1  christos 	  if (   r_type == R_390_GOTENT
   2641  1.1  christos 	      || r_type == R_390_GOTPLTENT)
   2642  1.1  christos 	    relocation += base_got->output_section->vma;
   2643  1.1  christos 
   2644  1.1  christos 	  break;
   2645  1.1  christos 
   2646  1.1  christos 	case R_390_GOTOFF16:
   2647  1.1  christos 	case R_390_GOTOFF32:
   2648  1.1  christos 	case R_390_GOTOFF64:
   2649  1.1  christos 	  /* Relocation is relative to the start of the global offset
   2650  1.1  christos 	     table.  */
   2651  1.1  christos 
   2652  1.6  christos 	  if (h != NULL
   2653  1.6  christos 	      && s390_is_ifunc_symbol_p (h)
   2654  1.6  christos 	      && h->def_regular
   2655  1.6  christos 	      && !bfd_link_executable (info))
   2656  1.6  christos 	    {
   2657  1.6  christos 	      relocation = (htab->elf.iplt->output_section->vma
   2658  1.6  christos 			    + htab->elf.iplt->output_offset
   2659  1.6  christos 			    + h->plt.offset
   2660  1.6  christos 			    - htab->elf.sgot->output_section->vma);
   2661  1.6  christos 	      goto do_relocation;
   2662  1.6  christos 	    }
   2663  1.6  christos 
   2664  1.1  christos 	  /* Note that sgot->output_offset is not involved in this
   2665  1.1  christos 	     calculation.  We always want the start of .got.  If we
   2666  1.1  christos 	     defined _GLOBAL_OFFSET_TABLE in a different way, as is
   2667  1.1  christos 	     permitted by the ABI, we might have to change this
   2668  1.1  christos 	     calculation.  */
   2669  1.1  christos 	  relocation -= htab->elf.sgot->output_section->vma;
   2670  1.1  christos 	  break;
   2671  1.1  christos 
   2672  1.1  christos 	case R_390_GOTPC:
   2673  1.1  christos 	case R_390_GOTPCDBL:
   2674  1.1  christos 	  /* Use global offset table as symbol value.  */
   2675  1.1  christos 	  relocation = htab->elf.sgot->output_section->vma;
   2676  1.1  christos 	  unresolved_reloc = FALSE;
   2677  1.1  christos 	  break;
   2678  1.1  christos 
   2679  1.1  christos 	case R_390_PLT12DBL:
   2680  1.1  christos 	case R_390_PLT16DBL:
   2681  1.1  christos 	case R_390_PLT24DBL:
   2682  1.1  christos 	case R_390_PLT32:
   2683  1.1  christos 	case R_390_PLT32DBL:
   2684  1.1  christos 	case R_390_PLT64:
   2685  1.1  christos 	  /* Relocation is to the entry for this symbol in the
   2686  1.1  christos 	     procedure linkage table.  */
   2687  1.1  christos 
   2688  1.1  christos 	  /* Resolve a PLT32 reloc against a local symbol directly,
   2689  1.1  christos 	     without using the procedure linkage table.  */
   2690  1.1  christos 	  if (h == NULL)
   2691  1.1  christos 	    break;
   2692  1.1  christos 
   2693  1.1  christos 	  if (h->plt.offset == (bfd_vma) -1
   2694  1.1  christos 	      || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
   2695  1.1  christos 	    {
   2696  1.1  christos 	      /* We didn't make a PLT entry for this symbol.  This
   2697  1.1  christos 		 happens when statically linking PIC code, or when
   2698  1.1  christos 		 using -Bsymbolic.  */
   2699  1.1  christos 	      break;
   2700  1.1  christos 	    }
   2701  1.1  christos 	  if (s390_is_ifunc_symbol_p (h))
   2702  1.1  christos 	    relocation = (htab->elf.iplt->output_section->vma
   2703  1.1  christos 			  + htab->elf.iplt->output_offset
   2704  1.1  christos 			  + h->plt.offset);
   2705  1.1  christos 	  else
   2706  1.1  christos 	    relocation = (htab->elf.splt->output_section->vma
   2707  1.1  christos 			  + htab->elf.splt->output_offset
   2708  1.1  christos 			  + h->plt.offset);
   2709  1.1  christos 	  unresolved_reloc = FALSE;
   2710  1.1  christos 	  break;
   2711  1.1  christos 
   2712  1.1  christos 	case R_390_PLTOFF16:
   2713  1.1  christos 	case R_390_PLTOFF32:
   2714  1.1  christos 	case R_390_PLTOFF64:
   2715  1.1  christos 	  /* Relocation is to the entry for this symbol in the
   2716  1.1  christos 	     procedure linkage table relative to the start of the GOT.  */
   2717  1.1  christos 
   2718  1.1  christos 	  /* For local symbols or if we didn't make a PLT entry for
   2719  1.1  christos 	     this symbol resolve the symbol directly.  */
   2720  1.1  christos 	  if (h == NULL
   2721  1.1  christos 	      || h->plt.offset == (bfd_vma) -1
   2722  1.1  christos 	      || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
   2723  1.1  christos 	    {
   2724  1.1  christos 	      relocation -= htab->elf.sgot->output_section->vma;
   2725  1.1  christos 	      break;
   2726  1.1  christos 	    }
   2727  1.1  christos 
   2728  1.1  christos 	  if (s390_is_ifunc_symbol_p (h))
   2729  1.1  christos 	    relocation = (htab->elf.iplt->output_section->vma
   2730  1.1  christos 			  + htab->elf.iplt->output_offset
   2731  1.1  christos 			  + h->plt.offset
   2732  1.1  christos 			  - htab->elf.sgot->output_section->vma);
   2733  1.1  christos 	  else
   2734  1.1  christos 	    relocation = (htab->elf.splt->output_section->vma
   2735  1.1  christos 			  + htab->elf.splt->output_offset
   2736  1.1  christos 			  + h->plt.offset
   2737  1.1  christos 			  - htab->elf.sgot->output_section->vma);
   2738  1.1  christos 	  unresolved_reloc = FALSE;
   2739  1.1  christos 	  break;
   2740  1.1  christos 
   2741  1.1  christos 	case R_390_PC16:
   2742  1.1  christos 	case R_390_PC12DBL:
   2743  1.1  christos 	case R_390_PC16DBL:
   2744  1.1  christos 	case R_390_PC24DBL:
   2745  1.1  christos 	case R_390_PC32:
   2746  1.1  christos 	case R_390_PC32DBL:
   2747  1.1  christos 	case R_390_PC64:
   2748  1.6  christos 	  /* The target of these relocs are instruction operands
   2749  1.6  christos 	     residing in read-only sections.  We cannot emit a runtime
   2750  1.6  christos 	     reloc for it.  */
   2751  1.6  christos 	  if (h != NULL
   2752  1.6  christos 	      && s390_is_ifunc_symbol_p (h)
   2753  1.6  christos 	      && h->def_regular
   2754  1.6  christos 	      && bfd_link_pic (info))
   2755  1.6  christos 	    {
   2756  1.6  christos 	      relocation = (htab->elf.iplt->output_section->vma
   2757  1.6  christos 			    + htab->elf.iplt->output_offset
   2758  1.6  christos 			    + h->plt.offset);
   2759  1.6  christos 	      goto do_relocation;
   2760  1.6  christos 	    }
   2761  1.6  christos 
   2762  1.6  christos 	case R_390_8:
   2763  1.6  christos 	case R_390_16:
   2764  1.6  christos 	case R_390_32:
   2765  1.6  christos 	case R_390_64:
   2766  1.1  christos 
   2767  1.1  christos 	  if (h != NULL
   2768  1.1  christos 	      && s390_is_ifunc_symbol_p (h)
   2769  1.1  christos 	      && h->def_regular)
   2770  1.1  christos 	    {
   2771  1.6  christos 	      if (!bfd_link_pic (info) || !h->non_got_ref)
   2772  1.1  christos 		{
   2773  1.1  christos 		  /* For a non-shared object STT_GNU_IFUNC symbol must
   2774  1.1  christos 		     go through PLT.  */
   2775  1.1  christos 		  relocation = (htab->elf.iplt->output_section->vma
   2776  1.1  christos 				+ htab->elf.iplt->output_offset
   2777  1.1  christos 				+ h ->plt.offset);
   2778  1.1  christos 		  goto do_relocation;
   2779  1.1  christos 		}
   2780  1.1  christos 	      else
   2781  1.1  christos 		{
   2782  1.1  christos 		  /* For shared objects a runtime relocation is needed.  */
   2783  1.1  christos 
   2784  1.1  christos 		  Elf_Internal_Rela outrel;
   2785  1.1  christos 		  asection *sreloc;
   2786  1.1  christos 
   2787  1.1  christos 		  /* Need a dynamic relocation to get the real function
   2788  1.1  christos 		     address.  */
   2789  1.1  christos 		  outrel.r_offset = _bfd_elf_section_offset (output_bfd,
   2790  1.1  christos 							     info,
   2791  1.1  christos 							     input_section,
   2792  1.1  christos 							     rel->r_offset);
   2793  1.1  christos 		  if (outrel.r_offset == (bfd_vma) -1
   2794  1.1  christos 		      || outrel.r_offset == (bfd_vma) -2)
   2795  1.1  christos 		    abort ();
   2796  1.1  christos 
   2797  1.1  christos 		  outrel.r_offset += (input_section->output_section->vma
   2798  1.1  christos 				      + input_section->output_offset);
   2799  1.1  christos 
   2800  1.1  christos 		  if (h->dynindx == -1
   2801  1.1  christos 		      || h->forced_local
   2802  1.6  christos 		      || bfd_link_executable (info))
   2803  1.1  christos 		    {
   2804  1.1  christos 		      /* This symbol is resolved locally.  */
   2805  1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
   2806  1.1  christos 		      outrel.r_addend = (h->root.u.def.value
   2807  1.1  christos 					 + h->root.u.def.section->output_section->vma
   2808  1.1  christos 					 + h->root.u.def.section->output_offset);
   2809  1.1  christos 		    }
   2810  1.1  christos 		  else
   2811  1.1  christos 		    {
   2812  1.1  christos 		      outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
   2813  1.1  christos 		      outrel.r_addend = 0;
   2814  1.1  christos 		    }
   2815  1.1  christos 
   2816  1.1  christos 		  sreloc = htab->elf.irelifunc;
   2817  1.1  christos 		  elf_append_rela (output_bfd, sreloc, &outrel);
   2818  1.1  christos 
   2819  1.1  christos 		  /* If this reloc is against an external symbol, we
   2820  1.1  christos 		     do not want to fiddle with the addend.  Otherwise,
   2821  1.1  christos 		     we need to include the symbol value so that it
   2822  1.1  christos 		     becomes an addend for the dynamic reloc.  For an
   2823  1.1  christos 		     internal symbol, we have updated addend.  */
   2824  1.1  christos 		  continue;
   2825  1.1  christos 		}
   2826  1.1  christos 	    }
   2827  1.1  christos 
   2828  1.1  christos 	  if ((input_section->flags & SEC_ALLOC) == 0)
   2829  1.1  christos 	    break;
   2830  1.1  christos 
   2831  1.6  christos 	  if ((bfd_link_pic (info)
   2832  1.1  christos 	       && (h == NULL
   2833  1.1  christos 		   || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
   2834  1.1  christos 		   || h->root.type != bfd_link_hash_undefweak)
   2835  1.1  christos 	       && ((r_type != R_390_PC16
   2836  1.1  christos 		    && r_type != R_390_PC12DBL
   2837  1.1  christos 		    && r_type != R_390_PC16DBL
   2838  1.1  christos 		    && r_type != R_390_PC24DBL
   2839  1.1  christos 		    && r_type != R_390_PC32
   2840  1.1  christos 		    && r_type != R_390_PC32DBL
   2841  1.1  christos 		    && r_type != R_390_PC64)
   2842  1.1  christos 		   || !SYMBOL_CALLS_LOCAL (info, h)))
   2843  1.1  christos 	      || (ELIMINATE_COPY_RELOCS
   2844  1.6  christos 		  && !bfd_link_pic (info)
   2845  1.1  christos 		  && h != NULL
   2846  1.1  christos 		  && h->dynindx != -1
   2847  1.1  christos 		  && !h->non_got_ref
   2848  1.1  christos 		  && ((h->def_dynamic
   2849  1.1  christos 		       && !h->def_regular)
   2850  1.1  christos 		      || h->root.type == bfd_link_hash_undefweak
   2851  1.1  christos 		      || h->root.type == bfd_link_hash_undefined)))
   2852  1.1  christos 	    {
   2853  1.1  christos 	      Elf_Internal_Rela outrel;
   2854  1.1  christos 	      bfd_boolean skip, relocate;
   2855  1.1  christos 	      asection *sreloc;
   2856  1.1  christos 	      bfd_byte *loc;
   2857  1.1  christos 
   2858  1.1  christos 	      /* When generating a shared object, these relocations
   2859  1.1  christos 		 are copied into the output file to be resolved at run
   2860  1.1  christos 		 time.  */
   2861  1.1  christos 	      skip = FALSE;
   2862  1.1  christos 	      relocate = FALSE;
   2863  1.1  christos 
   2864  1.1  christos 	      outrel.r_offset =
   2865  1.1  christos 		_bfd_elf_section_offset (output_bfd, info, input_section,
   2866  1.1  christos 					 rel->r_offset);
   2867  1.1  christos 	      if (outrel.r_offset == (bfd_vma) -1)
   2868  1.1  christos 		skip = TRUE;
   2869  1.1  christos 	      else if (outrel.r_offset == (bfd_vma) -2)
   2870  1.1  christos 		skip = TRUE, relocate = TRUE;
   2871  1.1  christos 
   2872  1.1  christos 	      outrel.r_offset += (input_section->output_section->vma
   2873  1.1  christos 				  + input_section->output_offset);
   2874  1.1  christos 
   2875  1.1  christos 	      if (skip)
   2876  1.1  christos 		memset (&outrel, 0, sizeof outrel);
   2877  1.1  christos 	      else if (h != NULL
   2878  1.1  christos 		       && h->dynindx != -1
   2879  1.1  christos 		       && (r_type == R_390_PC16
   2880  1.1  christos 			   || r_type == R_390_PC12DBL
   2881  1.1  christos 			   || r_type == R_390_PC16DBL
   2882  1.1  christos 			   || r_type == R_390_PC24DBL
   2883  1.1  christos 			   || r_type == R_390_PC32
   2884  1.1  christos 			   || r_type == R_390_PC32DBL
   2885  1.1  christos 			   || r_type == R_390_PC64
   2886  1.6  christos 			   || !bfd_link_pic (info)
   2887  1.1  christos 			   || !SYMBOLIC_BIND (info, h)
   2888  1.1  christos 			   || !h->def_regular))
   2889  1.1  christos 		{
   2890  1.1  christos 		  outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
   2891  1.1  christos 		  outrel.r_addend = rel->r_addend;
   2892  1.1  christos 		}
   2893  1.1  christos 	      else
   2894  1.1  christos 		{
   2895  1.1  christos 		  /* This symbol is local, or marked to become local.  */
   2896  1.1  christos 		  outrel.r_addend = relocation + rel->r_addend;
   2897  1.1  christos 		  if (r_type == R_390_64)
   2898  1.1  christos 		    {
   2899  1.1  christos 		      relocate = TRUE;
   2900  1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2901  1.1  christos 		    }
   2902  1.1  christos 		  else
   2903  1.1  christos 		    {
   2904  1.1  christos 		      long sindx;
   2905  1.1  christos 
   2906  1.1  christos 		      if (bfd_is_abs_section (sec))
   2907  1.1  christos 			sindx = 0;
   2908  1.1  christos 		      else if (sec == NULL || sec->owner == NULL)
   2909  1.1  christos 			{
   2910  1.1  christos 			  bfd_set_error(bfd_error_bad_value);
   2911  1.1  christos 			  return FALSE;
   2912  1.1  christos 			}
   2913  1.1  christos 		      else
   2914  1.1  christos 			{
   2915  1.1  christos 			  asection *osec;
   2916  1.1  christos 
   2917  1.1  christos 			  osec = sec->output_section;
   2918  1.1  christos 			  sindx = elf_section_data (osec)->dynindx;
   2919  1.1  christos 
   2920  1.1  christos 			  if (sindx == 0)
   2921  1.1  christos 			    {
   2922  1.1  christos 			      osec = htab->elf.text_index_section;
   2923  1.1  christos 			      sindx = elf_section_data (osec)->dynindx;
   2924  1.1  christos 			    }
   2925  1.1  christos 			  BFD_ASSERT (sindx != 0);
   2926  1.1  christos 
   2927  1.1  christos 			  /* We are turning this relocation into one
   2928  1.1  christos 			     against a section symbol, so subtract out
   2929  1.1  christos 			     the output section's address but not the
   2930  1.1  christos 			     offset of the input section in the output
   2931  1.1  christos 			     section.  */
   2932  1.1  christos 			  outrel.r_addend -= osec->vma;
   2933  1.1  christos 			}
   2934  1.1  christos 		      outrel.r_info = ELF64_R_INFO (sindx, r_type);
   2935  1.1  christos 		    }
   2936  1.1  christos 		}
   2937  1.1  christos 
   2938  1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   2939  1.1  christos 	      if (sreloc == NULL)
   2940  1.1  christos 		abort ();
   2941  1.1  christos 
   2942  1.1  christos 	      loc = sreloc->contents;
   2943  1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   2944  1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2945  1.1  christos 
   2946  1.1  christos 	      /* If this reloc is against an external symbol, we do
   2947  1.1  christos 		 not want to fiddle with the addend.  Otherwise, we
   2948  1.1  christos 		 need to include the symbol value so that it becomes
   2949  1.1  christos 		 an addend for the dynamic reloc.  */
   2950  1.1  christos 	      if (! relocate)
   2951  1.1  christos 		continue;
   2952  1.1  christos 	    }
   2953  1.1  christos 
   2954  1.1  christos 	  break;
   2955  1.1  christos 
   2956  1.1  christos 	  /* Relocations for tls literal pool entries.  */
   2957  1.1  christos 	case R_390_TLS_IE64:
   2958  1.6  christos 	  if (bfd_link_pic (info))
   2959  1.1  christos 	    {
   2960  1.1  christos 	      Elf_Internal_Rela outrel;
   2961  1.1  christos 	      asection *sreloc;
   2962  1.1  christos 	      bfd_byte *loc;
   2963  1.1  christos 
   2964  1.1  christos 	      outrel.r_offset = rel->r_offset
   2965  1.1  christos 				+ input_section->output_section->vma
   2966  1.1  christos 				+ input_section->output_offset;
   2967  1.1  christos 	      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2968  1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   2969  1.1  christos 	      if (sreloc == NULL)
   2970  1.1  christos 		abort ();
   2971  1.1  christos 	      loc = sreloc->contents;
   2972  1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   2973  1.1  christos 	      bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
   2974  1.1  christos 	    }
   2975  1.1  christos 	  /* Fall through.  */
   2976  1.1  christos 
   2977  1.1  christos 	case R_390_TLS_GD64:
   2978  1.1  christos 	case R_390_TLS_GOTIE64:
   2979  1.1  christos 	  r_type = elf_s390_tls_transition (info, r_type, h == NULL);
   2980  1.1  christos 	  tls_type = GOT_UNKNOWN;
   2981  1.1  christos 	  if (h == NULL && local_got_offsets)
   2982  1.1  christos 	    tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
   2983  1.1  christos 	  else if (h != NULL)
   2984  1.1  christos 	    {
   2985  1.1  christos 	      tls_type = elf_s390_hash_entry(h)->tls_type;
   2986  1.6  christos 	      if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
   2987  1.1  christos 		r_type = R_390_TLS_LE64;
   2988  1.1  christos 	    }
   2989  1.1  christos 	  if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
   2990  1.1  christos 	    r_type = R_390_TLS_IE64;
   2991  1.1  christos 
   2992  1.1  christos 	  if (r_type == R_390_TLS_LE64)
   2993  1.1  christos 	    {
   2994  1.1  christos 	      /* This relocation gets optimized away by the local exec
   2995  1.1  christos 		 access optimization.  */
   2996  1.1  christos 	      BFD_ASSERT (! unresolved_reloc);
   2997  1.1  christos 	      bfd_put_64 (output_bfd, -tpoff (info, relocation),
   2998  1.1  christos 			  contents + rel->r_offset);
   2999  1.1  christos 	      continue;
   3000  1.1  christos 	    }
   3001  1.1  christos 
   3002  1.1  christos 	  if (htab->elf.sgot == NULL)
   3003  1.1  christos 	    abort ();
   3004  1.1  christos 
   3005  1.1  christos 	  if (h != NULL)
   3006  1.1  christos 	    off = h->got.offset;
   3007  1.1  christos 	  else
   3008  1.1  christos 	    {
   3009  1.1  christos 	      if (local_got_offsets == NULL)
   3010  1.1  christos 		abort ();
   3011  1.1  christos 
   3012  1.1  christos 	      off = local_got_offsets[r_symndx];
   3013  1.1  christos 	    }
   3014  1.1  christos 
   3015  1.1  christos 	emit_tls_relocs:
   3016  1.1  christos 
   3017  1.1  christos 	  if ((off & 1) != 0)
   3018  1.1  christos 	    off &= ~1;
   3019  1.1  christos 	  else
   3020  1.1  christos 	    {
   3021  1.1  christos 	      Elf_Internal_Rela outrel;
   3022  1.1  christos 	      bfd_byte *loc;
   3023  1.1  christos 	      int dr_type, indx;
   3024  1.1  christos 
   3025  1.1  christos 	      if (htab->elf.srelgot == NULL)
   3026  1.1  christos 		abort ();
   3027  1.1  christos 
   3028  1.1  christos 	      outrel.r_offset = (htab->elf.sgot->output_section->vma
   3029  1.1  christos 				 + htab->elf.sgot->output_offset + off);
   3030  1.1  christos 
   3031  1.1  christos 	      indx = h && h->dynindx != -1 ? h->dynindx : 0;
   3032  1.1  christos 	      if (r_type == R_390_TLS_GD64)
   3033  1.1  christos 		dr_type = R_390_TLS_DTPMOD;
   3034  1.1  christos 	      else
   3035  1.1  christos 		dr_type = R_390_TLS_TPOFF;
   3036  1.1  christos 	      if (dr_type == R_390_TLS_TPOFF && indx == 0)
   3037  1.1  christos 		outrel.r_addend = relocation - dtpoff_base (info);
   3038  1.1  christos 	      else
   3039  1.1  christos 		outrel.r_addend = 0;
   3040  1.1  christos 	      outrel.r_info = ELF64_R_INFO (indx, dr_type);
   3041  1.1  christos 	      loc = htab->elf.srelgot->contents;
   3042  1.1  christos 	      loc += htab->elf.srelgot->reloc_count++
   3043  1.1  christos 		* sizeof (Elf64_External_Rela);
   3044  1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3045  1.1  christos 
   3046  1.1  christos 	      if (r_type == R_390_TLS_GD64)
   3047  1.1  christos 		{
   3048  1.1  christos 		  if (indx == 0)
   3049  1.1  christos 		    {
   3050  1.1  christos 	    	      BFD_ASSERT (! unresolved_reloc);
   3051  1.1  christos 		      bfd_put_64 (output_bfd,
   3052  1.1  christos 				  relocation - dtpoff_base (info),
   3053  1.1  christos 				  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
   3054  1.1  christos 		    }
   3055  1.1  christos 		  else
   3056  1.1  christos 		    {
   3057  1.1  christos 		      outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
   3058  1.1  christos 		      outrel.r_offset += GOT_ENTRY_SIZE;
   3059  1.1  christos 		      outrel.r_addend = 0;
   3060  1.1  christos 		      htab->elf.srelgot->reloc_count++;
   3061  1.1  christos 		      loc += sizeof (Elf64_External_Rela);
   3062  1.1  christos 		      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3063  1.1  christos 		    }
   3064  1.1  christos 		}
   3065  1.1  christos 
   3066  1.1  christos 	      if (h != NULL)
   3067  1.1  christos 		h->got.offset |= 1;
   3068  1.1  christos 	      else
   3069  1.1  christos 		local_got_offsets[r_symndx] |= 1;
   3070  1.1  christos 	    }
   3071  1.1  christos 
   3072  1.1  christos 	  if (off >= (bfd_vma) -2)
   3073  1.1  christos 	    abort ();
   3074  1.1  christos 	  if (r_type == ELF64_R_TYPE (rel->r_info))
   3075  1.1  christos 	    {
   3076  1.1  christos 	      relocation = htab->elf.sgot->output_offset + off;
   3077  1.1  christos 	      if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
   3078  1.1  christos 		relocation += htab->elf.sgot->output_section->vma;
   3079  1.1  christos 	      unresolved_reloc = FALSE;
   3080  1.1  christos 	    }
   3081  1.1  christos 	  else
   3082  1.1  christos 	    {
   3083  1.1  christos 	      bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
   3084  1.1  christos 			  contents + rel->r_offset);
   3085  1.1  christos 	      continue;
   3086  1.1  christos 	    }
   3087  1.1  christos 	  break;
   3088  1.1  christos 
   3089  1.1  christos 	case R_390_TLS_GOTIE12:
   3090  1.1  christos 	case R_390_TLS_GOTIE20:
   3091  1.1  christos 	case R_390_TLS_IEENT:
   3092  1.1  christos 	  if (h == NULL)
   3093  1.1  christos 	    {
   3094  1.1  christos 	      if (local_got_offsets == NULL)
   3095  1.1  christos 		abort();
   3096  1.1  christos 	      off = local_got_offsets[r_symndx];
   3097  1.6  christos 	      if (bfd_link_pic (info))
   3098  1.1  christos 		goto emit_tls_relocs;
   3099  1.1  christos 	    }
   3100  1.1  christos 	  else
   3101  1.1  christos 	    {
   3102  1.1  christos 	      off = h->got.offset;
   3103  1.1  christos 	      tls_type = elf_s390_hash_entry(h)->tls_type;
   3104  1.6  christos 	      if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
   3105  1.1  christos 		goto emit_tls_relocs;
   3106  1.1  christos 	    }
   3107  1.1  christos 
   3108  1.1  christos 	  if (htab->elf.sgot == NULL)
   3109  1.1  christos 	    abort ();
   3110  1.1  christos 
   3111  1.1  christos 	  BFD_ASSERT (! unresolved_reloc);
   3112  1.1  christos 	  bfd_put_64 (output_bfd, -tpoff (info, relocation),
   3113  1.1  christos 		      htab->elf.sgot->contents + off);
   3114  1.1  christos 	  relocation = htab->elf.sgot->output_offset + off;
   3115  1.1  christos 	  if (r_type == R_390_TLS_IEENT)
   3116  1.1  christos 	    relocation += htab->elf.sgot->output_section->vma;
   3117  1.1  christos 	  unresolved_reloc = FALSE;
   3118  1.1  christos 	  break;
   3119  1.1  christos 
   3120  1.1  christos 	case R_390_TLS_LDM64:
   3121  1.6  christos 	  if (! bfd_link_pic (info))
   3122  1.1  christos 	    /* The literal pool entry this relocation refers to gets ignored
   3123  1.1  christos 	       by the optimized code of the local exec model. Do nothing
   3124  1.1  christos 	       and the value will turn out zero.  */
   3125  1.1  christos 	    continue;
   3126  1.1  christos 
   3127  1.1  christos 	  if (htab->elf.sgot == NULL)
   3128  1.1  christos 	    abort ();
   3129  1.1  christos 
   3130  1.1  christos 	  off = htab->tls_ldm_got.offset;
   3131  1.1  christos 	  if (off & 1)
   3132  1.1  christos 	    off &= ~1;
   3133  1.1  christos 	  else
   3134  1.1  christos 	    {
   3135  1.1  christos 	      Elf_Internal_Rela outrel;
   3136  1.1  christos 	      bfd_byte *loc;
   3137  1.1  christos 
   3138  1.1  christos 	      if (htab->elf.srelgot == NULL)
   3139  1.1  christos 		abort ();
   3140  1.1  christos 
   3141  1.1  christos 	      outrel.r_offset = (htab->elf.sgot->output_section->vma
   3142  1.1  christos 				 + htab->elf.sgot->output_offset + off);
   3143  1.1  christos 
   3144  1.1  christos 	      bfd_put_64 (output_bfd, 0,
   3145  1.1  christos 			  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
   3146  1.1  christos 	      outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
   3147  1.1  christos 	      outrel.r_addend = 0;
   3148  1.1  christos 	      loc = htab->elf.srelgot->contents;
   3149  1.1  christos 	      loc += htab->elf.srelgot->reloc_count++
   3150  1.1  christos 		* sizeof (Elf64_External_Rela);
   3151  1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3152  1.1  christos 	      htab->tls_ldm_got.offset |= 1;
   3153  1.1  christos 	    }
   3154  1.1  christos 	  relocation = htab->elf.sgot->output_offset + off;
   3155  1.1  christos 	  unresolved_reloc = FALSE;
   3156  1.1  christos 	  break;
   3157  1.1  christos 
   3158  1.1  christos 	case R_390_TLS_LE64:
   3159  1.6  christos 	  if (bfd_link_dll (info))
   3160  1.1  christos 	    {
   3161  1.1  christos 	      /* Linking a shared library with non-fpic code requires
   3162  1.1  christos 		 a R_390_TLS_TPOFF relocation.  */
   3163  1.1  christos 	      Elf_Internal_Rela outrel;
   3164  1.1  christos 	      asection *sreloc;
   3165  1.1  christos 	      bfd_byte *loc;
   3166  1.1  christos 	      int indx;
   3167  1.1  christos 
   3168  1.1  christos 	      outrel.r_offset = rel->r_offset
   3169  1.1  christos 				+ input_section->output_section->vma
   3170  1.1  christos 				+ input_section->output_offset;
   3171  1.1  christos 	      if (h != NULL && h->dynindx != -1)
   3172  1.1  christos 		indx = h->dynindx;
   3173  1.1  christos 	      else
   3174  1.1  christos 		indx = 0;
   3175  1.1  christos 	      outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
   3176  1.1  christos 	      if (indx == 0)
   3177  1.1  christos 		outrel.r_addend = relocation - dtpoff_base (info);
   3178  1.1  christos 	      else
   3179  1.1  christos 		outrel.r_addend = 0;
   3180  1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   3181  1.1  christos 	      if (sreloc == NULL)
   3182  1.1  christos 		abort ();
   3183  1.1  christos 	      loc = sreloc->contents;
   3184  1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   3185  1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3186  1.1  christos 	    }
   3187  1.1  christos 	  else
   3188  1.1  christos 	    {
   3189  1.1  christos 	      BFD_ASSERT (! unresolved_reloc);
   3190  1.1  christos 	      bfd_put_64 (output_bfd, -tpoff (info, relocation),
   3191  1.1  christos 			  contents + rel->r_offset);
   3192  1.1  christos 	    }
   3193  1.1  christos 	  continue;
   3194  1.1  christos 
   3195  1.1  christos 	case R_390_TLS_LDO64:
   3196  1.6  christos 	  if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
   3197  1.1  christos 	    relocation -= dtpoff_base (info);
   3198  1.1  christos 	  else
   3199  1.1  christos 	    /* When converting LDO to LE, we must negate.  */
   3200  1.1  christos 	    relocation = -tpoff (info, relocation);
   3201  1.1  christos 	  break;
   3202  1.1  christos 
   3203  1.1  christos 	  /* Relocations for tls instructions.  */
   3204  1.1  christos 	case R_390_TLS_LOAD:
   3205  1.1  christos 	case R_390_TLS_GDCALL:
   3206  1.1  christos 	case R_390_TLS_LDCALL:
   3207  1.1  christos 	  tls_type = GOT_UNKNOWN;
   3208  1.1  christos 	  if (h == NULL && local_got_offsets)
   3209  1.1  christos 	    tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
   3210  1.1  christos 	  else if (h != NULL)
   3211  1.1  christos 	    tls_type = elf_s390_hash_entry(h)->tls_type;
   3212  1.1  christos 
   3213  1.1  christos 	  if (tls_type == GOT_TLS_GD)
   3214  1.1  christos 	    continue;
   3215  1.1  christos 
   3216  1.1  christos 	  if (r_type == R_390_TLS_LOAD)
   3217  1.1  christos 	    {
   3218  1.6  christos 	      if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
   3219  1.1  christos 		{
   3220  1.1  christos 		  /* IE->LE transition. Four valid cases:
   3221  1.1  christos 		     lg %rx,(0,%ry)    -> sllg %rx,%ry,0
   3222  1.1  christos 		     lg %rx,(%ry,0)    -> sllg %rx,%ry,0
   3223  1.1  christos 		     lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
   3224  1.1  christos 		     lg %rx,(%r12,%ry) -> sllg %rx,%ry,0  */
   3225  1.1  christos 		  unsigned int insn0, insn1, ry;
   3226  1.1  christos 
   3227  1.1  christos 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3228  1.1  christos 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3229  1.1  christos 		  if (insn1 != 0x0004)
   3230  1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3231  1.1  christos 		  ry = 0;
   3232  1.1  christos 		  if ((insn0 & 0xff00f000) == 0xe3000000)
   3233  1.1  christos 		    /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0  */
   3234  1.1  christos 		    ry = (insn0 & 0x000f0000);
   3235  1.1  christos 		  else if ((insn0 & 0xff0f0000) == 0xe3000000)
   3236  1.1  christos 		    /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0  */
   3237  1.1  christos 		    ry = (insn0 & 0x0000f000) << 4;
   3238  1.1  christos 		  else if ((insn0 & 0xff00f000) == 0xe300c000)
   3239  1.1  christos 		    /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0  */
   3240  1.1  christos 		    ry = (insn0 & 0x000f0000);
   3241  1.1  christos 		  else if ((insn0 & 0xff0f0000) == 0xe30c0000)
   3242  1.1  christos 		    /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0  */
   3243  1.1  christos 		    ry = (insn0 & 0x0000f000) << 4;
   3244  1.1  christos 		  else
   3245  1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3246  1.1  christos 		  insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
   3247  1.1  christos 		  insn1 = 0x000d;
   3248  1.1  christos 		  bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3249  1.1  christos 		  bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3250  1.1  christos 		}
   3251  1.1  christos 	    }
   3252  1.1  christos 	  else if (r_type == R_390_TLS_GDCALL)
   3253  1.1  christos 	    {
   3254  1.1  christos 	      unsigned int insn0, insn1;
   3255  1.1  christos 
   3256  1.1  christos 	      insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3257  1.1  christos 	      insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3258  1.1  christos 	      if ((insn0 & 0xffff0000) != 0xc0e50000)
   3259  1.1  christos 		invalid_tls_insn (input_bfd, input_section, rel);
   3260  1.6  christos 	      if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
   3261  1.1  christos 		{
   3262  1.1  christos 		  /* GD->LE transition.
   3263  1.1  christos 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
   3264  1.1  christos 		  insn0 = 0xc0040000;
   3265  1.1  christos 		  insn1 = 0x0000;
   3266  1.1  christos 		}
   3267  1.1  christos 	      else
   3268  1.1  christos 		{
   3269  1.1  christos 		  /* GD->IE transition.
   3270  1.1  christos 		     brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12)  */
   3271  1.1  christos 		  insn0 = 0xe322c000;
   3272  1.1  christos 		  insn1 = 0x0004;
   3273  1.1  christos 		}
   3274  1.1  christos 	      bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3275  1.1  christos 	      bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3276  1.1  christos 	    }
   3277  1.1  christos 	  else if (r_type == R_390_TLS_LDCALL)
   3278  1.1  christos 	    {
   3279  1.6  christos 	      if (!bfd_link_pic (info))
   3280  1.1  christos 		{
   3281  1.1  christos 		  unsigned int insn0, insn1;
   3282  1.1  christos 
   3283  1.1  christos 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3284  1.1  christos 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3285  1.1  christos 		  if ((insn0 & 0xffff0000) != 0xc0e50000)
   3286  1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3287  1.1  christos 		  /* LD->LE transition.
   3288  1.1  christos 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
   3289  1.1  christos 		  insn0 = 0xc0040000;
   3290  1.1  christos 		  insn1 = 0x0000;
   3291  1.1  christos 		  bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3292  1.1  christos 		  bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3293  1.1  christos 		}
   3294  1.1  christos 	    }
   3295  1.1  christos 	  continue;
   3296  1.1  christos 
   3297  1.1  christos 	default:
   3298  1.1  christos 	  break;
   3299  1.1  christos 	}
   3300  1.1  christos 
   3301  1.1  christos       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
   3302  1.1  christos 	 because such sections are not SEC_ALLOC and thus ld.so will
   3303  1.1  christos 	 not process them.  */
   3304  1.1  christos       if (unresolved_reloc
   3305  1.1  christos 	  && !((input_section->flags & SEC_DEBUGGING) != 0
   3306  1.1  christos 	       && h->def_dynamic)
   3307  1.1  christos 	  && _bfd_elf_section_offset (output_bfd, info, input_section,
   3308  1.1  christos 				      rel->r_offset) != (bfd_vma) -1)
   3309  1.1  christos 	(*_bfd_error_handler)
   3310  1.1  christos 	  (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
   3311  1.1  christos 	   input_bfd,
   3312  1.1  christos 	   input_section,
   3313  1.1  christos 	   (long) rel->r_offset,
   3314  1.1  christos 	   howto->name,
   3315  1.1  christos 	   h->root.root.string);
   3316  1.1  christos 
   3317  1.1  christos     do_relocation:
   3318  1.1  christos 
   3319  1.1  christos       /* When applying a 24 bit reloc we need to start one byte
   3320  1.1  christos 	 earlier.  Otherwise the 32 bit get/put bfd operations might
   3321  1.1  christos 	 access a byte after the actual section.  */
   3322  1.1  christos       if (r_type == R_390_PC24DBL
   3323  1.1  christos 	  || r_type == R_390_PLT24DBL)
   3324  1.1  christos 	rel->r_offset--;
   3325  1.1  christos 
   3326  1.1  christos       if (r_type == R_390_20
   3327  1.1  christos 	  || r_type == R_390_GOT20
   3328  1.1  christos 	  || r_type == R_390_GOTPLT20
   3329  1.1  christos 	  || r_type == R_390_TLS_GOTIE20)
   3330  1.1  christos 	{
   3331  1.1  christos 	  relocation += rel->r_addend;
   3332  1.1  christos 	  relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
   3333  1.1  christos 	  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
   3334  1.1  christos 					contents, rel->r_offset,
   3335  1.1  christos 					relocation, 0);
   3336  1.1  christos 	}
   3337  1.1  christos       else
   3338  1.1  christos 	r = _bfd_final_link_relocate (howto, input_bfd, input_section,
   3339  1.1  christos 				      contents, rel->r_offset,
   3340  1.1  christos 				      relocation, rel->r_addend);
   3341  1.1  christos 
   3342  1.1  christos       if (r != bfd_reloc_ok)
   3343  1.1  christos 	{
   3344  1.1  christos 	  const char *name;
   3345  1.1  christos 
   3346  1.1  christos 	  if (h != NULL)
   3347  1.1  christos 	    name = h->root.root.string;
   3348  1.1  christos 	  else
   3349  1.1  christos 	    {
   3350  1.1  christos 	      name = bfd_elf_string_from_elf_section (input_bfd,
   3351  1.1  christos 						      symtab_hdr->sh_link,
   3352  1.1  christos 						      sym->st_name);
   3353  1.1  christos 	      if (name == NULL)
   3354  1.1  christos 		return FALSE;
   3355  1.1  christos 	      if (*name == '\0')
   3356  1.1  christos 		name = bfd_section_name (input_bfd, sec);
   3357  1.1  christos 	    }
   3358  1.1  christos 
   3359  1.1  christos 	  if (r == bfd_reloc_overflow)
   3360  1.6  christos 	    (*info->callbacks->reloc_overflow)
   3361  1.6  christos 	      (info, (h ? &h->root : NULL), name, howto->name,
   3362  1.6  christos 	       (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
   3363  1.1  christos 	  else
   3364  1.1  christos 	    {
   3365  1.1  christos 	      (*_bfd_error_handler)
   3366  1.1  christos 		(_("%B(%A+0x%lx): reloc against `%s': error %d"),
   3367  1.1  christos 		 input_bfd, input_section,
   3368  1.1  christos 		 (long) rel->r_offset, name, (int) r);
   3369  1.1  christos 	      return FALSE;
   3370  1.1  christos 	    }
   3371  1.1  christos 	}
   3372  1.1  christos     }
   3373  1.1  christos 
   3374  1.1  christos   return TRUE;
   3375  1.1  christos }
   3376  1.1  christos 
   3377  1.1  christos /* Generate the PLT slots together with the dynamic relocations needed
   3378  1.1  christos    for IFUNC symbols.  */
   3379  1.1  christos 
   3380  1.1  christos static void
   3381  1.1  christos elf_s390_finish_ifunc_symbol (bfd *output_bfd,
   3382  1.1  christos 			      struct bfd_link_info *info,
   3383  1.1  christos 			      struct elf_link_hash_entry *h,
   3384  1.1  christos 			      struct elf_s390_link_hash_table *htab,
   3385  1.1  christos 			      bfd_vma plt_offset,
   3386  1.1  christos 			      bfd_vma resolver_address)
   3387  1.1  christos {
   3388  1.1  christos   bfd_vma plt_index;
   3389  1.1  christos   bfd_vma got_offset;
   3390  1.1  christos   Elf_Internal_Rela rela;
   3391  1.1  christos   bfd_byte *loc;
   3392  1.1  christos   asection *plt, *gotplt, *relplt;
   3393  1.1  christos 
   3394  1.1  christos   if (htab->elf.iplt == NULL
   3395  1.1  christos       || htab->elf.igotplt == NULL
   3396  1.1  christos       || htab->elf.irelplt == NULL)
   3397  1.1  christos     abort ();
   3398  1.1  christos 
   3399  1.1  christos   /* Index of the PLT slot within iplt section.  */
   3400  1.1  christos   plt_index = plt_offset / PLT_ENTRY_SIZE;
   3401  1.1  christos   plt = htab->elf.iplt;
   3402  1.1  christos   /* Offset into the igot.plt section.  */
   3403  1.1  christos   got_offset = plt_index * GOT_ENTRY_SIZE;
   3404  1.1  christos   gotplt = htab->elf.igotplt;
   3405  1.1  christos   relplt = htab->elf.irelplt;
   3406  1.1  christos 
   3407  1.1  christos   /* Fill in the blueprint of a PLT.  */
   3408  1.1  christos   memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
   3409  1.1  christos 	  PLT_ENTRY_SIZE);
   3410  1.1  christos 
   3411  1.1  christos   /* Fixup the relative address to the GOT entry */
   3412  1.1  christos   bfd_put_32 (output_bfd,
   3413  1.1  christos 	      (gotplt->output_section->vma +
   3414  1.1  christos 	       gotplt->output_offset + got_offset
   3415  1.1  christos 	       - (plt->output_section->vma +
   3416  1.1  christos 		  plt->output_offset +
   3417  1.1  christos 		  plt_offset))/2,
   3418  1.1  christos 	      plt->contents + plt_offset + 2);
   3419  1.1  christos   /* Fixup the relative branch to PLT 0 */
   3420  1.1  christos   bfd_put_32 (output_bfd, - (plt->output_offset +
   3421  1.1  christos 			     (PLT_ENTRY_SIZE * plt_index) + 22)/2,
   3422  1.1  christos 	      plt->contents + plt_offset + 24);
   3423  1.1  christos   /* Fixup offset into .rela.plt section.  */
   3424  1.1  christos   bfd_put_32 (output_bfd, relplt->output_offset +
   3425  1.1  christos 	      plt_index * sizeof (Elf64_External_Rela),
   3426  1.1  christos 	      plt->contents + plt_offset + 28);
   3427  1.1  christos 
   3428  1.1  christos   /* Fill in the entry in the global offset table.
   3429  1.1  christos      Points to instruction after GOT offset.  */
   3430  1.1  christos   bfd_put_64 (output_bfd,
   3431  1.1  christos 	      (plt->output_section->vma
   3432  1.1  christos 	       + plt->output_offset
   3433  1.1  christos 	       + plt_offset
   3434  1.1  christos 	       + 14),
   3435  1.1  christos 	      gotplt->contents + got_offset);
   3436  1.1  christos 
   3437  1.1  christos   /* Fill in the entry in the .rela.plt section.  */
   3438  1.1  christos   rela.r_offset = (gotplt->output_section->vma
   3439  1.1  christos 		   + gotplt->output_offset
   3440  1.1  christos 		   + got_offset);
   3441  1.1  christos 
   3442  1.1  christos   if (!h
   3443  1.1  christos       || h->dynindx == -1
   3444  1.6  christos       || ((bfd_link_executable (info)
   3445  1.1  christos 	   || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   3446  1.1  christos 	  && h->def_regular))
   3447  1.1  christos     {
   3448  1.1  christos       /* The symbol can be locally resolved.  */
   3449  1.1  christos       rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
   3450  1.1  christos       rela.r_addend = resolver_address;
   3451  1.1  christos     }
   3452  1.1  christos   else
   3453  1.1  christos     {
   3454  1.1  christos       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
   3455  1.1  christos       rela.r_addend = 0;
   3456  1.1  christos     }
   3457  1.1  christos 
   3458  1.1  christos   loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
   3459  1.1  christos   bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3460  1.1  christos }
   3461  1.1  christos 
   3462  1.1  christos 
   3463  1.1  christos /* Finish up dynamic symbol handling.  We set the contents of various
   3464  1.1  christos    dynamic sections here.  */
   3465  1.1  christos 
   3466  1.1  christos static bfd_boolean
   3467  1.1  christos elf_s390_finish_dynamic_symbol (bfd *output_bfd,
   3468  1.1  christos 				struct bfd_link_info *info,
   3469  1.1  christos 				struct elf_link_hash_entry *h,
   3470  1.1  christos 				Elf_Internal_Sym *sym)
   3471  1.1  christos {
   3472  1.1  christos   struct elf_s390_link_hash_table *htab;
   3473  1.1  christos   struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
   3474  1.1  christos 
   3475  1.1  christos   htab = elf_s390_hash_table (info);
   3476  1.1  christos   if (htab == NULL)
   3477  1.1  christos     return FALSE;
   3478  1.1  christos 
   3479  1.1  christos   if (h->plt.offset != (bfd_vma) -1)
   3480  1.1  christos     {
   3481  1.1  christos       bfd_vma plt_index;
   3482  1.1  christos       bfd_vma got_offset;
   3483  1.1  christos       Elf_Internal_Rela rela;
   3484  1.1  christos       bfd_byte *loc;
   3485  1.1  christos 
   3486  1.1  christos       /* This symbol has an entry in the procedure linkage table.  Set
   3487  1.1  christos 	 it up.  */
   3488  1.6  christos       if (s390_is_ifunc_symbol_p (h) && h->def_regular)
   3489  1.1  christos 	{
   3490  1.6  christos 	  elf_s390_finish_ifunc_symbol (output_bfd, info, h,
   3491  1.6  christos 	    htab, h->plt.offset,
   3492  1.6  christos 	    eh->ifunc_resolver_address +
   3493  1.6  christos 	    eh->ifunc_resolver_section->output_offset +
   3494  1.6  christos 	    eh->ifunc_resolver_section->output_section->vma);
   3495  1.6  christos 
   3496  1.6  christos 	  /* Do not return yet.  Handling of explicit GOT slots of
   3497  1.6  christos 	     IFUNC symbols is below.  */
   3498  1.1  christos 	}
   3499  1.1  christos       else
   3500  1.1  christos 	{
   3501  1.1  christos 	  if (h->dynindx == -1
   3502  1.1  christos 	      || htab->elf.splt == NULL
   3503  1.1  christos 	      || htab->elf.sgotplt == NULL
   3504  1.1  christos 	      || htab->elf.srelplt == NULL)
   3505  1.1  christos 	    abort ();
   3506  1.1  christos 
   3507  1.1  christos 	  /* Calc. index no.
   3508  1.1  christos 	     Current offset - size first entry / entry size.  */
   3509  1.1  christos 	  plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
   3510  1.1  christos 
   3511  1.1  christos 	  /* Offset in GOT is PLT index plus GOT headers(3) times 8,
   3512  1.1  christos 	     addr & GOT addr.  */
   3513  1.1  christos 	  got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
   3514  1.1  christos 
   3515  1.1  christos 	  /* Fill in the blueprint of a PLT.  */
   3516  1.1  christos 	  memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
   3517  1.1  christos 		  PLT_ENTRY_SIZE);
   3518  1.1  christos 
   3519  1.1  christos 	  /* Fixup the relative address to the GOT entry */
   3520  1.1  christos 	  bfd_put_32 (output_bfd,
   3521  1.1  christos 		      (htab->elf.sgotplt->output_section->vma +
   3522  1.1  christos 		       htab->elf.sgotplt->output_offset + got_offset
   3523  1.1  christos 		       - (htab->elf.splt->output_section->vma +
   3524  1.1  christos 			  htab->elf.splt->output_offset +
   3525  1.1  christos 			  h->plt.offset))/2,
   3526  1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 2);
   3527  1.1  christos 	  /* Fixup the relative branch to PLT 0 */
   3528  1.1  christos 	  bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
   3529  1.1  christos 				     (PLT_ENTRY_SIZE * plt_index) + 22)/2,
   3530  1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 24);
   3531  1.1  christos 	  /* Fixup offset into .rela.plt section.  */
   3532  1.1  christos 	  bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
   3533  1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 28);
   3534  1.1  christos 
   3535  1.1  christos 	  /* Fill in the entry in the global offset table.
   3536  1.1  christos 	     Points to instruction after GOT offset.  */
   3537  1.1  christos 	  bfd_put_64 (output_bfd,
   3538  1.1  christos 		      (htab->elf.splt->output_section->vma
   3539  1.1  christos 		       + htab->elf.splt->output_offset
   3540  1.1  christos 		       + h->plt.offset
   3541  1.1  christos 		       + 14),
   3542  1.1  christos 		      htab->elf.sgotplt->contents + got_offset);
   3543  1.1  christos 
   3544  1.1  christos 	  /* Fill in the entry in the .rela.plt section.  */
   3545  1.1  christos 	  rela.r_offset = (htab->elf.sgotplt->output_section->vma
   3546  1.1  christos 			   + htab->elf.sgotplt->output_offset
   3547  1.1  christos 			   + got_offset);
   3548  1.1  christos 	  rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
   3549  1.1  christos 	  rela.r_addend = 0;
   3550  1.1  christos 	  loc = htab->elf.srelplt->contents + plt_index *
   3551  1.1  christos 	    sizeof (Elf64_External_Rela);
   3552  1.1  christos 	  bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3553  1.1  christos 
   3554  1.1  christos 	  if (!h->def_regular)
   3555  1.1  christos 	    {
   3556  1.1  christos 	      /* Mark the symbol as undefined, rather than as defined in
   3557  1.1  christos 		 the .plt section.  Leave the value alone.  This is a clue
   3558  1.1  christos 		 for the dynamic linker, to make function pointer
   3559  1.1  christos 		 comparisons work between an application and shared
   3560  1.1  christos 		 library.  */
   3561  1.1  christos 	      sym->st_shndx = SHN_UNDEF;
   3562  1.1  christos 	    }
   3563  1.1  christos 	}
   3564  1.1  christos     }
   3565  1.1  christos 
   3566  1.1  christos   if (h->got.offset != (bfd_vma) -1
   3567  1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
   3568  1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
   3569  1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
   3570  1.1  christos     {
   3571  1.1  christos       Elf_Internal_Rela rela;
   3572  1.1  christos       bfd_byte *loc;
   3573  1.1  christos 
   3574  1.1  christos       /* This symbol has an entry in the global offset table.  Set it
   3575  1.1  christos 	 up.  */
   3576  1.1  christos       if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
   3577  1.1  christos 	abort ();
   3578  1.1  christos 
   3579  1.1  christos       rela.r_offset = (htab->elf.sgot->output_section->vma
   3580  1.1  christos 		       + htab->elf.sgot->output_offset
   3581  1.1  christos 		       + (h->got.offset &~ (bfd_vma) 1));
   3582  1.1  christos 
   3583  1.1  christos       if (h->def_regular && s390_is_ifunc_symbol_p (h))
   3584  1.1  christos 	{
   3585  1.6  christos 	  if (bfd_link_pic (info))
   3586  1.1  christos 	    {
   3587  1.1  christos 	      /* An explicit GOT slot usage needs GLOB_DAT.  If the
   3588  1.1  christos 		 symbol references local the implicit got.iplt slot
   3589  1.1  christos 		 will be used and the IRELATIVE reloc has been created
   3590  1.1  christos 		 above.  */
   3591  1.1  christos 	      goto do_glob_dat;
   3592  1.1  christos 	    }
   3593  1.1  christos 	  else
   3594  1.1  christos 	    {
   3595  1.1  christos 	      /* For non-shared objects explicit GOT slots must be
   3596  1.1  christos 		 filled with the PLT slot address for pointer
   3597  1.1  christos 		 equality reasons.  */
   3598  1.1  christos 	      bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
   3599  1.1  christos 				       + htab->elf.iplt->output_offset
   3600  1.1  christos 				       + h->plt.offset),
   3601  1.1  christos 			  htab->elf.sgot->contents + h->got.offset);
   3602  1.1  christos 	      return TRUE;
   3603  1.1  christos 	    }
   3604  1.1  christos 	}
   3605  1.6  christos       else if (bfd_link_pic (info)
   3606  1.1  christos 	  && SYMBOL_REFERENCES_LOCAL (info, h))
   3607  1.1  christos 	{
   3608  1.1  christos 	  /* If this is a static link, or it is a -Bsymbolic link and
   3609  1.1  christos 	     the symbol is defined locally or was forced to be local
   3610  1.1  christos 	     because of a version file, we just want to emit a
   3611  1.1  christos 	     RELATIVE reloc.  The entry in the global offset table
   3612  1.1  christos 	     will already have been initialized in the
   3613  1.1  christos 	     relocate_section function.  */
   3614  1.1  christos 	  if (!h->def_regular)
   3615  1.1  christos 	    return FALSE;
   3616  1.1  christos 	  BFD_ASSERT((h->got.offset & 1) != 0);
   3617  1.1  christos 	  rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   3618  1.1  christos 	  rela.r_addend = (h->root.u.def.value
   3619  1.1  christos 			   + h->root.u.def.section->output_section->vma
   3620  1.1  christos 			   + h->root.u.def.section->output_offset);
   3621  1.1  christos 	}
   3622  1.1  christos       else
   3623  1.1  christos 	{
   3624  1.1  christos 	  BFD_ASSERT((h->got.offset & 1) == 0);
   3625  1.1  christos do_glob_dat:
   3626  1.1  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
   3627  1.1  christos 	  rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
   3628  1.1  christos 	  rela.r_addend = 0;
   3629  1.1  christos 	}
   3630  1.1  christos 
   3631  1.1  christos       loc = htab->elf.srelgot->contents;
   3632  1.1  christos       loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
   3633  1.1  christos       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3634  1.1  christos     }
   3635  1.1  christos 
   3636  1.1  christos   if (h->needs_copy)
   3637  1.1  christos     {
   3638  1.1  christos       Elf_Internal_Rela rela;
   3639  1.1  christos       bfd_byte *loc;
   3640  1.1  christos 
   3641  1.1  christos       /* This symbols needs a copy reloc.  Set it up.  */
   3642  1.1  christos 
   3643  1.1  christos       if (h->dynindx == -1
   3644  1.1  christos 	  || (h->root.type != bfd_link_hash_defined
   3645  1.1  christos 	      && h->root.type != bfd_link_hash_defweak)
   3646  1.1  christos 	  || htab->srelbss == NULL)
   3647  1.1  christos 	abort ();
   3648  1.1  christos 
   3649  1.1  christos       rela.r_offset = (h->root.u.def.value
   3650  1.1  christos 		       + h->root.u.def.section->output_section->vma
   3651  1.1  christos 		       + h->root.u.def.section->output_offset);
   3652  1.1  christos       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
   3653  1.1  christos       rela.r_addend = 0;
   3654  1.1  christos       loc = htab->srelbss->contents;
   3655  1.1  christos       loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
   3656  1.1  christos       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3657  1.1  christos     }
   3658  1.1  christos 
   3659  1.1  christos   /* Mark some specially defined symbols as absolute.  */
   3660  1.1  christos   if (h == htab->elf.hdynamic
   3661  1.1  christos       || h == htab->elf.hgot
   3662  1.1  christos       || h == htab->elf.hplt)
   3663  1.1  christos     sym->st_shndx = SHN_ABS;
   3664  1.1  christos 
   3665  1.1  christos   return TRUE;
   3666  1.1  christos }
   3667  1.1  christos 
   3668  1.1  christos /* Used to decide how to sort relocs in an optimal manner for the
   3669  1.1  christos    dynamic linker, before writing them out.  */
   3670  1.1  christos 
   3671  1.1  christos static enum elf_reloc_type_class
   3672  1.1  christos elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
   3673  1.1  christos 			   const asection *rel_sec ATTRIBUTE_UNUSED,
   3674  1.1  christos 			   const Elf_Internal_Rela *rela)
   3675  1.1  christos {
   3676  1.6  christos   bfd *abfd = info->output_bfd;
   3677  1.6  christos   const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   3678  1.6  christos   struct elf_s390_link_hash_table *htab = elf_s390_hash_table (info);
   3679  1.6  christos   unsigned long r_symndx = ELF64_R_SYM (rela->r_info);
   3680  1.6  christos   Elf_Internal_Sym sym;
   3681  1.6  christos 
   3682  1.6  christos   if (htab->elf.dynsym == NULL
   3683  1.6  christos       || !bed->s->swap_symbol_in (abfd,
   3684  1.6  christos 				  (htab->elf.dynsym->contents
   3685  1.6  christos 				   + r_symndx * bed->s->sizeof_sym),
   3686  1.6  christos 				  0, &sym))
   3687  1.6  christos     abort ();
   3688  1.6  christos 
   3689  1.6  christos   /* Check relocation against STT_GNU_IFUNC symbol.  */
   3690  1.6  christos   if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
   3691  1.6  christos     return reloc_class_ifunc;
   3692  1.6  christos 
   3693  1.1  christos   switch ((int) ELF64_R_TYPE (rela->r_info))
   3694  1.1  christos     {
   3695  1.1  christos     case R_390_RELATIVE:
   3696  1.1  christos       return reloc_class_relative;
   3697  1.1  christos     case R_390_JMP_SLOT:
   3698  1.1  christos       return reloc_class_plt;
   3699  1.1  christos     case R_390_COPY:
   3700  1.1  christos       return reloc_class_copy;
   3701  1.1  christos     default:
   3702  1.1  christos       return reloc_class_normal;
   3703  1.1  christos     }
   3704  1.1  christos }
   3705  1.1  christos 
   3706  1.1  christos /* Finish up the dynamic sections.  */
   3707  1.1  christos 
   3708  1.1  christos static bfd_boolean
   3709  1.1  christos elf_s390_finish_dynamic_sections (bfd *output_bfd,
   3710  1.1  christos 				  struct bfd_link_info *info)
   3711  1.1  christos {
   3712  1.1  christos   struct elf_s390_link_hash_table *htab;
   3713  1.1  christos   bfd *dynobj;
   3714  1.1  christos   asection *sdyn;
   3715  1.1  christos   bfd *ibfd;
   3716  1.1  christos   unsigned int i;
   3717  1.1  christos 
   3718  1.1  christos   htab = elf_s390_hash_table (info);
   3719  1.1  christos   if (htab == NULL)
   3720  1.1  christos     return FALSE;
   3721  1.1  christos 
   3722  1.1  christos   dynobj = htab->elf.dynobj;
   3723  1.1  christos   sdyn = bfd_get_linker_section (dynobj, ".dynamic");
   3724  1.1  christos 
   3725  1.1  christos   if (htab->elf.dynamic_sections_created)
   3726  1.1  christos     {
   3727  1.1  christos       Elf64_External_Dyn *dyncon, *dynconend;
   3728  1.1  christos 
   3729  1.1  christos       if (sdyn == NULL || htab->elf.sgot == NULL)
   3730  1.1  christos 	abort ();
   3731  1.1  christos 
   3732  1.1  christos       dyncon = (Elf64_External_Dyn *) sdyn->contents;
   3733  1.1  christos       dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
   3734  1.1  christos       for (; dyncon < dynconend; dyncon++)
   3735  1.1  christos 	{
   3736  1.1  christos 	  Elf_Internal_Dyn dyn;
   3737  1.1  christos 	  asection *s;
   3738  1.1  christos 
   3739  1.1  christos 	  bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
   3740  1.1  christos 
   3741  1.1  christos 	  switch (dyn.d_tag)
   3742  1.1  christos 	    {
   3743  1.1  christos 	    default:
   3744  1.1  christos 	      continue;
   3745  1.1  christos 
   3746  1.1  christos 	    case DT_PLTGOT:
   3747  1.6  christos 	      s = htab->elf.sgotplt;
   3748  1.6  christos 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   3749  1.1  christos 	      break;
   3750  1.1  christos 
   3751  1.1  christos 	    case DT_JMPREL:
   3752  1.6  christos 	      s = htab->elf.srelplt;
   3753  1.6  christos 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   3754  1.1  christos 	      break;
   3755  1.1  christos 
   3756  1.1  christos 	    case DT_PLTRELSZ:
   3757  1.6  christos 	      dyn.d_un.d_val = htab->elf.srelplt->size + htab->elf.irelplt->size;
   3758  1.1  christos 	      break;
   3759  1.1  christos 
   3760  1.1  christos 	    case DT_RELASZ:
   3761  1.1  christos 	      /* The procedure linkage table relocs (DT_JMPREL) should
   3762  1.1  christos 		 not be included in the overall relocs (DT_RELA).
   3763  1.1  christos 		 Therefore, we override the DT_RELASZ entry here to
   3764  1.1  christos 		 make it not include the JMPREL relocs.  Since the
   3765  1.1  christos 		 linker script arranges for .rela.plt to follow all
   3766  1.1  christos 		 other relocation sections, we don't have to worry
   3767  1.1  christos 		 about changing the DT_RELA entry.  */
   3768  1.6  christos 	      dyn.d_un.d_val -= htab->elf.srelplt->size + htab->elf.irelplt->size;
   3769  1.1  christos 	      break;
   3770  1.1  christos 	    }
   3771  1.1  christos 
   3772  1.1  christos 	  bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
   3773  1.1  christos 	}
   3774  1.1  christos 
   3775  1.1  christos       /* Fill in the special first entry in the procedure linkage table.  */
   3776  1.1  christos       if (htab->elf.splt && htab->elf.splt->size > 0)
   3777  1.1  christos 	{
   3778  1.1  christos 	  /* fill in blueprint for plt 0 entry */
   3779  1.1  christos 	  memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
   3780  1.1  christos 		  PLT_FIRST_ENTRY_SIZE);
   3781  1.1  christos 	  /* Fixup relative address to start of GOT */
   3782  1.1  christos 	  bfd_put_32 (output_bfd,
   3783  1.6  christos 		      (htab->elf.sgotplt->output_section->vma
   3784  1.6  christos 		       + htab->elf.sgotplt->output_offset
   3785  1.6  christos 		       - htab->elf.splt->output_section->vma
   3786  1.6  christos 		       - htab->elf.splt->output_offset - 6)/2,
   3787  1.1  christos 		      htab->elf.splt->contents + 8);
   3788  1.1  christos 	}
   3789  1.1  christos       if (elf_section_data (htab->elf.splt->output_section) != NULL)
   3790  1.1  christos 	elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
   3791  1.1  christos 	  = PLT_ENTRY_SIZE;
   3792  1.1  christos     }
   3793  1.1  christos 
   3794  1.1  christos   if (htab->elf.sgotplt)
   3795  1.1  christos     {
   3796  1.1  christos       /* Fill in the first three entries in the global offset table.  */
   3797  1.1  christos       if (htab->elf.sgotplt->size > 0)
   3798  1.1  christos 	{
   3799  1.1  christos 	  bfd_put_64 (output_bfd,
   3800  1.1  christos 		      (sdyn == NULL ? (bfd_vma) 0
   3801  1.1  christos 		       : sdyn->output_section->vma + sdyn->output_offset),
   3802  1.1  christos 		      htab->elf.sgotplt->contents);
   3803  1.1  christos 	  /* One entry for shared object struct ptr.  */
   3804  1.1  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
   3805  1.1  christos 	  /* One entry for _dl_runtime_resolve.  */
   3806  1.6  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 16);
   3807  1.1  christos 	}
   3808  1.1  christos 
   3809  1.1  christos       elf_section_data (htab->elf.sgot->output_section)
   3810  1.1  christos 	->this_hdr.sh_entsize = 8;
   3811  1.1  christos     }
   3812  1.1  christos 
   3813  1.1  christos   /* Finish dynamic symbol for local IFUNC symbols.  */
   3814  1.3  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   3815  1.1  christos     {
   3816  1.1  christos       struct plt_entry *local_plt;
   3817  1.1  christos       Elf_Internal_Sym *isym;
   3818  1.1  christos       Elf_Internal_Shdr *symtab_hdr;
   3819  1.1  christos 
   3820  1.1  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   3821  1.1  christos 
   3822  1.1  christos       local_plt = elf_s390_local_plt (ibfd);
   3823  1.1  christos       if (local_plt != NULL)
   3824  1.1  christos 	for (i = 0; i < symtab_hdr->sh_info; i++)
   3825  1.1  christos 	  {
   3826  1.1  christos 	    if (local_plt[i].plt.offset != (bfd_vma) -1)
   3827  1.1  christos 	      {
   3828  1.1  christos 		asection *sec = local_plt[i].sec;
   3829  1.1  christos 		isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
   3830  1.1  christos 		if (isym == NULL)
   3831  1.1  christos 		  return FALSE;
   3832  1.1  christos 
   3833  1.1  christos 		if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   3834  1.1  christos 		  elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
   3835  1.1  christos 						local_plt[i].plt.offset,
   3836  1.1  christos 						isym->st_value
   3837  1.1  christos 						+ sec->output_section->vma
   3838  1.1  christos 						+ sec->output_offset);
   3839  1.1  christos 
   3840  1.1  christos 	      }
   3841  1.1  christos 	  }
   3842  1.1  christos     }
   3843  1.1  christos 
   3844  1.1  christos   return TRUE;
   3845  1.1  christos }
   3846  1.1  christos 
   3847  1.1  christos /* Return address for Ith PLT stub in section PLT, for relocation REL
   3848  1.1  christos    or (bfd_vma) -1 if it should not be included.  */
   3849  1.1  christos 
   3850  1.1  christos static bfd_vma
   3851  1.1  christos elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
   3852  1.1  christos 		      const arelent *rel ATTRIBUTE_UNUSED)
   3853  1.1  christos {
   3854  1.1  christos   return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
   3855  1.1  christos }
   3856  1.1  christos 
   3857  1.5  christos /* Merge backend specific data from an object file to the output
   3858  1.5  christos    object file when linking.  */
   3859  1.5  christos 
   3860  1.5  christos static bfd_boolean
   3861  1.5  christos elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
   3862  1.5  christos {
   3863  1.5  christos   if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
   3864  1.5  christos     return TRUE;
   3865  1.5  christos 
   3866  1.5  christos   if (!elf_s390_merge_obj_attributes (ibfd, obfd))
   3867  1.5  christos     return FALSE;
   3868  1.5  christos 
   3869  1.5  christos   return TRUE;
   3870  1.5  christos }
   3871  1.5  christos 
   3872  1.1  christos /* Why was the hash table entry size definition changed from
   3873  1.1  christos    ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
   3874  1.1  christos    this is the only reason for the s390_elf64_size_info structure.  */
   3875  1.1  christos 
   3876  1.1  christos const struct elf_size_info s390_elf64_size_info =
   3877  1.1  christos {
   3878  1.1  christos   sizeof (Elf64_External_Ehdr),
   3879  1.1  christos   sizeof (Elf64_External_Phdr),
   3880  1.1  christos   sizeof (Elf64_External_Shdr),
   3881  1.1  christos   sizeof (Elf64_External_Rel),
   3882  1.1  christos   sizeof (Elf64_External_Rela),
   3883  1.1  christos   sizeof (Elf64_External_Sym),
   3884  1.1  christos   sizeof (Elf64_External_Dyn),
   3885  1.1  christos   sizeof (Elf_External_Note),
   3886  1.1  christos   8,		/* hash-table entry size.  */
   3887  1.1  christos   1,		/* internal relocations per external relocations.  */
   3888  1.1  christos   64,		/* arch_size.  */
   3889  1.1  christos   3,		/* log_file_align.  */
   3890  1.1  christos   ELFCLASS64, EV_CURRENT,
   3891  1.1  christos   bfd_elf64_write_out_phdrs,
   3892  1.1  christos   bfd_elf64_write_shdrs_and_ehdr,
   3893  1.1  christos   bfd_elf64_checksum_contents,
   3894  1.1  christos   bfd_elf64_write_relocs,
   3895  1.1  christos   bfd_elf64_swap_symbol_in,
   3896  1.1  christos   bfd_elf64_swap_symbol_out,
   3897  1.1  christos   bfd_elf64_slurp_reloc_table,
   3898  1.1  christos   bfd_elf64_slurp_symbol_table,
   3899  1.1  christos   bfd_elf64_swap_dyn_in,
   3900  1.1  christos   bfd_elf64_swap_dyn_out,
   3901  1.1  christos   bfd_elf64_swap_reloc_in,
   3902  1.1  christos   bfd_elf64_swap_reloc_out,
   3903  1.1  christos   bfd_elf64_swap_reloca_in,
   3904  1.1  christos   bfd_elf64_swap_reloca_out
   3905  1.1  christos };
   3906  1.1  christos 
   3907  1.3  christos #define TARGET_BIG_SYM	s390_elf64_vec
   3908  1.1  christos #define TARGET_BIG_NAME	"elf64-s390"
   3909  1.1  christos #define ELF_ARCH	bfd_arch_s390
   3910  1.1  christos #define ELF_TARGET_ID	S390_ELF_DATA
   3911  1.1  christos #define ELF_MACHINE_CODE EM_S390
   3912  1.1  christos #define ELF_MACHINE_ALT1 EM_S390_OLD
   3913  1.1  christos #define ELF_MAXPAGESIZE 0x1000
   3914  1.1  christos 
   3915  1.1  christos #define elf_backend_size_info		s390_elf64_size_info
   3916  1.1  christos 
   3917  1.1  christos #define elf_backend_can_gc_sections	1
   3918  1.1  christos #define elf_backend_can_refcount	1
   3919  1.1  christos #define elf_backend_want_got_plt	1
   3920  1.1  christos #define elf_backend_plt_readonly	1
   3921  1.1  christos #define elf_backend_want_plt_sym	0
   3922  1.1  christos #define elf_backend_got_header_size	24
   3923  1.1  christos #define elf_backend_rela_normal		1
   3924  1.1  christos 
   3925  1.1  christos #define elf_info_to_howto		elf_s390_info_to_howto
   3926  1.1  christos 
   3927  1.1  christos #define bfd_elf64_bfd_is_local_label_name     elf_s390_is_local_label_name
   3928  1.1  christos #define bfd_elf64_bfd_link_hash_table_create  elf_s390_link_hash_table_create
   3929  1.1  christos #define bfd_elf64_bfd_reloc_type_lookup	      elf_s390_reloc_type_lookup
   3930  1.5  christos #define bfd_elf64_bfd_reloc_name_lookup       elf_s390_reloc_name_lookup
   3931  1.5  christos #define bfd_elf64_bfd_merge_private_bfd_data  elf64_s390_merge_private_bfd_data
   3932  1.1  christos 
   3933  1.1  christos #define elf_backend_adjust_dynamic_symbol     elf_s390_adjust_dynamic_symbol
   3934  1.1  christos #define elf_backend_check_relocs	      elf_s390_check_relocs
   3935  1.1  christos #define elf_backend_copy_indirect_symbol      elf_s390_copy_indirect_symbol
   3936  1.1  christos #define elf_backend_create_dynamic_sections   elf_s390_create_dynamic_sections
   3937  1.1  christos #define elf_backend_finish_dynamic_sections   elf_s390_finish_dynamic_sections
   3938  1.1  christos #define elf_backend_finish_dynamic_symbol     elf_s390_finish_dynamic_symbol
   3939  1.1  christos #define elf_backend_gc_mark_hook	      elf_s390_gc_mark_hook
   3940  1.1  christos #define elf_backend_gc_sweep_hook	      elf_s390_gc_sweep_hook
   3941  1.1  christos #define elf_backend_reloc_type_class	      elf_s390_reloc_type_class
   3942  1.1  christos #define elf_backend_relocate_section	      elf_s390_relocate_section
   3943  1.1  christos #define elf_backend_size_dynamic_sections     elf_s390_size_dynamic_sections
   3944  1.1  christos #define elf_backend_init_index_section	      _bfd_elf_init_1_index_section
   3945  1.1  christos #define elf_backend_plt_sym_val		      elf_s390_plt_sym_val
   3946  1.1  christos #define elf_backend_add_symbol_hook           elf_s390_add_symbol_hook
   3947  1.5  christos #define elf_backend_sort_relocs_p             elf_s390_elf_sort_relocs_p
   3948  1.1  christos 
   3949  1.1  christos #define bfd_elf64_mkobject		elf_s390_mkobject
   3950  1.1  christos #define elf_backend_object_p		elf_s390_object_p
   3951  1.1  christos 
   3952  1.1  christos #include "elf64-target.h"
   3953