bfd/elf64-s390.c

   1 /* IBM S/390-specific support for 64-bit ELF
   2    Copyright 2000, 2001, 2002, 2003, 2004, 2005
   3    Free Software Foundation, Inc.
   4    Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
   5
   6    This file is part of BFD, the Binary File Descriptor library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "bfdlink.h"
  26 #include "libbfd.h"
  27 #include "elf-bfd.h"
  28
  29 static reloc_howto_type *elf_s390_reloc_type_lookup
  30   PARAMS ((bfd *, bfd_reloc_code_real_type));
  31 static void elf_s390_info_to_howto
  32   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
  33 static bfd_boolean elf_s390_is_local_label_name
  34   PARAMS ((bfd *, const char *));
  35 static struct bfd_hash_entry *link_hash_newfunc
  36   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
  37 static struct bfd_link_hash_table *elf_s390_link_hash_table_create
  38   PARAMS ((bfd *));
  39 static bfd_boolean create_got_section
  40   PARAMS((bfd *, struct bfd_link_info *));
  41 static bfd_boolean elf_s390_create_dynamic_sections
  42   PARAMS((bfd *, struct bfd_link_info *));
  43 static void elf_s390_copy_indirect_symbol
  44   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *,
  45            struct elf_link_hash_entry *));
  46 static bfd_boolean elf_s390_check_relocs
  47   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  48            const Elf_Internal_Rela *));
  49 static asection *elf_s390_gc_mark_hook
  50   PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
  51            struct elf_link_hash_entry *, Elf_Internal_Sym *));
  52 static bfd_boolean elf_s390_gc_sweep_hook
  53   PARAMS ((bfd *, struct bfd_link_info *, asection *,
  54            const Elf_Internal_Rela *));
  55 struct elf_s390_link_hash_entry;
  56 static void elf_s390_adjust_gotplt
  57   PARAMS ((struct elf_s390_link_hash_entry *));
  58 static bfd_boolean elf_s390_adjust_dynamic_symbol
  59   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
  60 static bfd_boolean allocate_dynrelocs
  61   PARAMS ((struct elf_link_hash_entry *, PTR));
  62 static bfd_boolean readonly_dynrelocs
  63   PARAMS ((struct elf_link_hash_entry *, PTR));
  64 static bfd_boolean elf_s390_size_dynamic_sections
  65   PARAMS ((bfd *, struct bfd_link_info *));
  66 static bfd_boolean elf_s390_relocate_section
  67   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  68            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  69 static bfd_boolean elf_s390_finish_dynamic_symbol
  70   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  71            Elf_Internal_Sym *));
  72 static enum elf_reloc_type_class elf_s390_reloc_type_class
  73   PARAMS ((const Elf_Internal_Rela *));
  74 static bfd_boolean elf_s390_finish_dynamic_sections
  75   PARAMS ((bfd *, struct bfd_link_info *));
  76 static bfd_boolean elf_s390_mkobject
  77   PARAMS ((bfd *));
  78 static bfd_boolean elf_s390_object_p
  79   PARAMS ((bfd *));
  80 static int elf_s390_tls_transition
  81   PARAMS ((struct bfd_link_info *, int, int));
  82 static bfd_reloc_status_type s390_tls_reloc
  83   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  84 static bfd_vma dtpoff_base
  85   PARAMS ((struct bfd_link_info *));
  86 static bfd_vma tpoff
  87   PARAMS ((struct bfd_link_info *, bfd_vma));
  88 static void invalid_tls_insn
  89   PARAMS ((bfd *, asection *, Elf_Internal_Rela *));
  90 static bfd_reloc_status_type s390_elf_ldisp_reloc
  91   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
  92
  93 #include "elf/s390.h"
  94
  95 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
  96    from smaller values.  Start with zero, widen, *then* decrement.  */
  97 #define MINUS_ONE      (((bfd_vma)0) - 1)
  98
  99 /* The relocation "howto" table.  */
 100 static reloc_howto_type elf_howto_table[] =
 101 {
 102   HOWTO (R_390_NONE,            /* type */
 103          0,                     /* rightshift */
 104          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 105          0,                     /* bitsize */
 106          FALSE,                 /* pc_relative */
 107          0,                     /* bitpos */
 108          complain_overflow_dont, /* complain_on_overflow */
 109          bfd_elf_generic_reloc, /* special_function */
 110          "R_390_NONE",          /* name */
 111          FALSE,                 /* partial_inplace */
 112          0,                     /* src_mask */
 113          0,                     /* dst_mask */
 114          FALSE),                /* pcrel_offset */
 115
 116   HOWTO(R_390_8,         0, 0,  8, FALSE, 0, complain_overflow_bitfield,
 117         bfd_elf_generic_reloc, "R_390_8",        FALSE, 0,0x000000ff, FALSE),
 118   HOWTO(R_390_12,        0, 1, 12, FALSE, 0, complain_overflow_dont,
 119         bfd_elf_generic_reloc, "R_390_12",       FALSE, 0,0x00000fff, FALSE),
 120   HOWTO(R_390_16,        0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 121         bfd_elf_generic_reloc, "R_390_16",       FALSE, 0,0x0000ffff, FALSE),
 122   HOWTO(R_390_32,        0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 123         bfd_elf_generic_reloc, "R_390_32",       FALSE, 0,0xffffffff, FALSE),
 124   HOWTO(R_390_PC32,      0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 125         bfd_elf_generic_reloc, "R_390_PC32",     FALSE, 0,0xffffffff, TRUE),
 126   HOWTO(R_390_GOT12,     0, 1, 12, FALSE, 0, complain_overflow_bitfield,
 127         bfd_elf_generic_reloc, "R_390_GOT12",    FALSE, 0,0x00000fff, FALSE),
 128   HOWTO(R_390_GOT32,     0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 129         bfd_elf_generic_reloc, "R_390_GOT32",    FALSE, 0,0xffffffff, FALSE),
 130   HOWTO(R_390_PLT32,     0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 131         bfd_elf_generic_reloc, "R_390_PLT32",    FALSE, 0,0xffffffff, TRUE),
 132   HOWTO(R_390_COPY,      0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 133         bfd_elf_generic_reloc, "R_390_COPY",     FALSE, 0,MINUS_ONE,  FALSE),
 134   HOWTO(R_390_GLOB_DAT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 135         bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE,  FALSE),
 136   HOWTO(R_390_JMP_SLOT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 137         bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE,  FALSE),
 138   HOWTO(R_390_RELATIVE,  0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
 139         bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE,  FALSE),
 140   HOWTO(R_390_GOTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 141         bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE,  FALSE),
 142   HOWTO(R_390_GOTPC,     0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
 143         bfd_elf_generic_reloc, "R_390_GOTPC",    FALSE, 0,MINUS_ONE,  TRUE),
 144   HOWTO(R_390_GOT16,     0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 145         bfd_elf_generic_reloc, "R_390_GOT16",    FALSE, 0,0x0000ffff, FALSE),
 146   HOWTO(R_390_PC16,      0, 1, 16,  TRUE, 0, complain_overflow_bitfield,
 147         bfd_elf_generic_reloc, "R_390_PC16",     FALSE, 0,0x0000ffff, TRUE),
 148   HOWTO(R_390_PC16DBL,   1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
 149         bfd_elf_generic_reloc, "R_390_PC16DBL",  FALSE, 0,0x0000ffff, TRUE),
 150   HOWTO(R_390_PLT16DBL,  1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
 151         bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
 152   HOWTO(R_390_PC32DBL,   1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 153         bfd_elf_generic_reloc, "R_390_PC32DBL",  FALSE, 0,0xffffffff, TRUE),
 154   HOWTO(R_390_PLT32DBL,  1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 155         bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
 156   HOWTO(R_390_GOTPCDBL,  1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 157         bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE,  TRUE),
 158   HOWTO(R_390_64,        0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 159         bfd_elf_generic_reloc, "R_390_64",       FALSE, 0,MINUS_ONE,  FALSE),
 160   HOWTO(R_390_PC64,      0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
 161         bfd_elf_generic_reloc, "R_390_PC64",     FALSE, 0,MINUS_ONE,  TRUE),
 162   HOWTO(R_390_GOT64,     0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 163         bfd_elf_generic_reloc, "R_390_GOT64",    FALSE, 0,MINUS_ONE,  FALSE),
 164   HOWTO(R_390_PLT64,     0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
 165         bfd_elf_generic_reloc, "R_390_PLT64",    FALSE, 0,MINUS_ONE,  TRUE),
 166   HOWTO(R_390_GOTENT,    1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 167         bfd_elf_generic_reloc, "R_390_GOTENT",   FALSE, 0,MINUS_ONE,  TRUE),
 168   HOWTO(R_390_GOTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 169         bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
 170   HOWTO(R_390_GOTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 171         bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
 172   HOWTO(R_390_GOTPLT12,  0, 1, 12, FALSE, 0, complain_overflow_dont,
 173         bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
 174   HOWTO(R_390_GOTPLT16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 175         bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
 176   HOWTO(R_390_GOTPLT32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 177         bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
 178   HOWTO(R_390_GOTPLT64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 179         bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE,  FALSE),
 180   HOWTO(R_390_GOTPLTENT, 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
 181         bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE,  TRUE),
 182   HOWTO(R_390_PLTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 183         bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
 184   HOWTO(R_390_PLTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 185         bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
 186   HOWTO(R_390_PLTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 187         bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
 188   HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
 189         s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
 190   HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
 191         s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
 192   HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
 193         s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
 194   EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32.  */
 195   HOWTO(R_390_TLS_GD64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 196         bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
 197   HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
 198         bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
 199   EMPTY_HOWTO (R_390_TLS_GOTIE32),      /* Empty entry for R_390_TLS_GOTIE32.  */
 200   HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 201         bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
 202   EMPTY_HOWTO (R_390_TLS_LDM32),        /* Empty entry for R_390_TLS_LDM32.  */
 203   HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 204         bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
 205   EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32.  */
 206   HOWTO(R_390_TLS_IE64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 207         bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
 208   HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
 209         bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
 210   EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32.  */
 211   HOWTO(R_390_TLS_LE64,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 212         bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
 213   EMPTY_HOWTO (R_390_TLS_LDO32),        /* Empty entry for R_390_TLS_LDO32.  */
 214   HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 215         bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
 216   HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 217         bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
 218   HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 219         bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
 220   HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
 221         bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
 222   HOWTO(R_390_20,        0, 2, 20, FALSE, 8, complain_overflow_dont,
 223         s390_elf_ldisp_reloc, "R_390_20",      FALSE, 0,0x0fffff00, FALSE),
 224   HOWTO(R_390_GOT20,     0, 2, 20, FALSE, 8, complain_overflow_dont,
 225         s390_elf_ldisp_reloc, "R_390_GOT20",   FALSE, 0,0x0fffff00, FALSE),
 226   HOWTO(R_390_GOTPLT20,  0, 2, 20, FALSE, 8, complain_overflow_dont,
 227         s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
 228   HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
 229         s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
 230 };
 231
 232 /* GNU extension to record C++ vtable hierarchy.  */
 233 static reloc_howto_type elf64_s390_vtinherit_howto =
 234   HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
 235 static reloc_howto_type elf64_s390_vtentry_howto =
 236   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);
 237
 238 static reloc_howto_type *
 239 elf_s390_reloc_type_lookup (abfd, code)
 240      bfd *abfd ATTRIBUTE_UNUSED;
 241      bfd_reloc_code_real_type code;
 242 {
 243   switch (code)
 244     {
 245     case BFD_RELOC_NONE:
 246       return &elf_howto_table[(int) R_390_NONE];
 247     case BFD_RELOC_8:
 248       return &elf_howto_table[(int) R_390_8];
 249     case BFD_RELOC_390_12:
 250       return &elf_howto_table[(int) R_390_12];
 251     case BFD_RELOC_16:
 252       return &elf_howto_table[(int) R_390_16];
 253     case BFD_RELOC_32:
 254       return &elf_howto_table[(int) R_390_32];
 255     case BFD_RELOC_CTOR:
 256       return &elf_howto_table[(int) R_390_32];
 257     case BFD_RELOC_32_PCREL:
 258       return &elf_howto_table[(int) R_390_PC32];
 259     case BFD_RELOC_390_GOT12:
 260       return &elf_howto_table[(int) R_390_GOT12];
 261     case BFD_RELOC_32_GOT_PCREL:
 262       return &elf_howto_table[(int) R_390_GOT32];
 263     case BFD_RELOC_390_PLT32:
 264       return &elf_howto_table[(int) R_390_PLT32];
 265     case BFD_RELOC_390_COPY:
 266       return &elf_howto_table[(int) R_390_COPY];
 267     case BFD_RELOC_390_GLOB_DAT:
 268       return &elf_howto_table[(int) R_390_GLOB_DAT];
 269     case BFD_RELOC_390_JMP_SLOT:
 270       return &elf_howto_table[(int) R_390_JMP_SLOT];
 271     case BFD_RELOC_390_RELATIVE:
 272       return &elf_howto_table[(int) R_390_RELATIVE];
 273     case BFD_RELOC_32_GOTOFF:
 274       return &elf_howto_table[(int) R_390_GOTOFF32];
 275     case BFD_RELOC_390_GOTPC:
 276       return &elf_howto_table[(int) R_390_GOTPC];
 277     case BFD_RELOC_390_GOT16:
 278       return &elf_howto_table[(int) R_390_GOT16];
 279     case BFD_RELOC_16_PCREL:
 280       return &elf_howto_table[(int) R_390_PC16];
 281     case BFD_RELOC_390_PC16DBL:
 282       return &elf_howto_table[(int) R_390_PC16DBL];
 283     case BFD_RELOC_390_PLT16DBL:
 284       return &elf_howto_table[(int) R_390_PLT16DBL];
 285     case BFD_RELOC_390_PC32DBL:
 286       return &elf_howto_table[(int) R_390_PC32DBL];
 287     case BFD_RELOC_390_PLT32DBL:
 288       return &elf_howto_table[(int) R_390_PLT32DBL];
 289     case BFD_RELOC_390_GOTPCDBL:
 290       return &elf_howto_table[(int) R_390_GOTPCDBL];
 291     case BFD_RELOC_64:
 292       return &elf_howto_table[(int) R_390_64];
 293     case BFD_RELOC_64_PCREL:
 294       return &elf_howto_table[(int) R_390_PC64];
 295     case BFD_RELOC_390_GOT64:
 296       return &elf_howto_table[(int) R_390_GOT64];
 297     case BFD_RELOC_390_PLT64:
 298       return &elf_howto_table[(int) R_390_PLT64];
 299     case BFD_RELOC_390_GOTENT:
 300       return &elf_howto_table[(int) R_390_GOTENT];
 301     case BFD_RELOC_16_GOTOFF:
 302       return &elf_howto_table[(int) R_390_GOTOFF16];
 303     case BFD_RELOC_390_GOTOFF64:
 304       return &elf_howto_table[(int) R_390_GOTOFF64];
 305     case BFD_RELOC_390_GOTPLT12:
 306       return &elf_howto_table[(int) R_390_GOTPLT12];
 307     case BFD_RELOC_390_GOTPLT16:
 308       return &elf_howto_table[(int) R_390_GOTPLT16];
 309     case BFD_RELOC_390_GOTPLT32:
 310       return &elf_howto_table[(int) R_390_GOTPLT32];
 311     case BFD_RELOC_390_GOTPLT64:
 312       return &elf_howto_table[(int) R_390_GOTPLT64];
 313     case BFD_RELOC_390_GOTPLTENT:
 314       return &elf_howto_table[(int) R_390_GOTPLTENT];
 315     case BFD_RELOC_390_PLTOFF16:
 316       return &elf_howto_table[(int) R_390_PLTOFF16];
 317     case BFD_RELOC_390_PLTOFF32:
 318       return &elf_howto_table[(int) R_390_PLTOFF32];
 319     case BFD_RELOC_390_PLTOFF64:
 320       return &elf_howto_table[(int) R_390_PLTOFF64];
 321     case BFD_RELOC_390_TLS_LOAD:
 322       return &elf_howto_table[(int) R_390_TLS_LOAD];
 323     case BFD_RELOC_390_TLS_GDCALL:
 324       return &elf_howto_table[(int) R_390_TLS_GDCALL];
 325     case BFD_RELOC_390_TLS_LDCALL:
 326       return &elf_howto_table[(int) R_390_TLS_LDCALL];
 327     case BFD_RELOC_390_TLS_GD64:
 328       return &elf_howto_table[(int) R_390_TLS_GD64];
 329     case BFD_RELOC_390_TLS_GOTIE12:
 330       return &elf_howto_table[(int) R_390_TLS_GOTIE12];
 331     case BFD_RELOC_390_TLS_GOTIE64:
 332       return &elf_howto_table[(int) R_390_TLS_GOTIE64];
 333     case BFD_RELOC_390_TLS_LDM64:
 334       return &elf_howto_table[(int) R_390_TLS_LDM64];
 335     case BFD_RELOC_390_TLS_IE64:
 336       return &elf_howto_table[(int) R_390_TLS_IE64];
 337     case BFD_RELOC_390_TLS_IEENT:
 338       return &elf_howto_table[(int) R_390_TLS_IEENT];
 339     case BFD_RELOC_390_TLS_LE64:
 340       return &elf_howto_table[(int) R_390_TLS_LE64];
 341     case BFD_RELOC_390_TLS_LDO64:
 342       return &elf_howto_table[(int) R_390_TLS_LDO64];
 343     case BFD_RELOC_390_TLS_DTPMOD:
 344       return &elf_howto_table[(int) R_390_TLS_DTPMOD];
 345     case BFD_RELOC_390_TLS_DTPOFF:
 346       return &elf_howto_table[(int) R_390_TLS_DTPOFF];
 347     case BFD_RELOC_390_TLS_TPOFF:
 348       return &elf_howto_table[(int) R_390_TLS_TPOFF];
 349     case BFD_RELOC_390_20:
 350       return &elf_howto_table[(int) R_390_20];
 351     case BFD_RELOC_390_GOT20:
 352       return &elf_howto_table[(int) R_390_GOT20];
 353     case BFD_RELOC_390_GOTPLT20:
 354       return &elf_howto_table[(int) R_390_GOTPLT20];
 355     case BFD_RELOC_390_TLS_GOTIE20:
 356       return &elf_howto_table[(int) R_390_TLS_GOTIE20];
 357     case BFD_RELOC_VTABLE_INHERIT:
 358       return &elf64_s390_vtinherit_howto;
 359     case BFD_RELOC_VTABLE_ENTRY:
 360       return &elf64_s390_vtentry_howto;
 361     default:
 362       break;
 363     }
 364   return 0;
 365 }
 366
 367 /* We need to use ELF64_R_TYPE so we have our own copy of this function,
 368    and elf64-s390.c has its own copy.  */
 369
 370 static void
 371 elf_s390_info_to_howto (abfd, cache_ptr, dst)
 372      bfd *abfd ATTRIBUTE_UNUSED;
 373      arelent *cache_ptr;
 374      Elf_Internal_Rela *dst;
 375 {
 376   unsigned int r_type = ELF64_R_TYPE(dst->r_info);
 377   switch (r_type)
 378     {
 379     case R_390_GNU_VTINHERIT:
 380       cache_ptr->howto = &elf64_s390_vtinherit_howto;
 381       break;
 382
 383     case R_390_GNU_VTENTRY:
 384       cache_ptr->howto = &elf64_s390_vtentry_howto;
 385       break;
 386
 387     default:
 388       if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
 389         {
 390           (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
 391                                  abfd, (int) r_type);
 392           r_type = R_390_NONE;
 393         }
 394       cache_ptr->howto = &elf_howto_table[r_type];
 395     }
 396 }
 397
 398 /* A relocation function which doesn't do anything.  */
 399 static bfd_reloc_status_type
 400 s390_tls_reloc (abfd, reloc_entry, symbol, data, input_section,
 401                 output_bfd, error_message)
 402      bfd *abfd ATTRIBUTE_UNUSED;
 403      arelent *reloc_entry;
 404      asymbol *symbol ATTRIBUTE_UNUSED;
 405      PTR data ATTRIBUTE_UNUSED;
 406      asection *input_section;
 407      bfd *output_bfd;
 408      char **error_message ATTRIBUTE_UNUSED;
 409 {
 410   if (output_bfd)
 411     reloc_entry->address += input_section->output_offset;
 412   return bfd_reloc_ok;
 413 }
 414
 415 /* Handle the large displacement relocs.  */
 416 static bfd_reloc_status_type
 417 s390_elf_ldisp_reloc (abfd, reloc_entry, symbol, data, input_section,
 418                       output_bfd, error_message)
 419      bfd *abfd;
 420      arelent *reloc_entry;
 421      asymbol *symbol;
 422      PTR data;
 423      asection *input_section;
 424      bfd *output_bfd;
 425      char **error_message ATTRIBUTE_UNUSED;
 426 {
 427   reloc_howto_type *howto = reloc_entry->howto;
 428   bfd_vma relocation;
 429   bfd_vma insn;
 430
 431   if (output_bfd != (bfd *) NULL
 432       && (symbol->flags & BSF_SECTION_SYM) == 0
 433       && (! howto->partial_inplace
 434           || reloc_entry->addend == 0))
 435     {
 436       reloc_entry->address += input_section->output_offset;
 437       return bfd_reloc_ok;
 438     }
 439   if (output_bfd != NULL)
 440     return bfd_reloc_continue;
 441
 442   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
 443     return bfd_reloc_outofrange;
 444
 445   relocation = (symbol->value
 446                 + symbol->section->output_section->vma
 447                 + symbol->section->output_offset);
 448   relocation += reloc_entry->addend;
 449   if (howto->pc_relative)
 450     {
 451       relocation -= (input_section->output_section->vma
 452                      + input_section->output_offset);
 453       relocation -= reloc_entry->address;
 454     }
 455
 456   insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
 457   insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
 458   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
 459
 460   if ((bfd_signed_vma) relocation < - 0x80000
 461       || (bfd_signed_vma) relocation > 0x7ffff)
 462     return bfd_reloc_overflow;
 463   else
 464     return bfd_reloc_ok;
 465 }
 466
 467 static bfd_boolean
 468 elf_s390_is_local_label_name (abfd, name)
 469      bfd *abfd;
 470      const char *name;
 471 {
 472   if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
 473     return TRUE;
 474
 475   return _bfd_elf_is_local_label_name (abfd, name);
 476 }
 477
 478 /* Functions for the 390 ELF linker.  */
 479
 480 /* The name of the dynamic interpreter.  This is put in the .interp
 481    section.  */
 482
 483 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
 484
 485 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
 486    copying dynamic variables from a shared lib into an app's dynbss
 487    section, and instead use a dynamic relocation to point into the
 488    shared lib.  */
 489 #define ELIMINATE_COPY_RELOCS 1
 490
 491 /* The size in bytes of the first entry in the procedure linkage table.  */
 492 #define PLT_FIRST_ENTRY_SIZE 32
 493 /* The size in bytes of an entry in the procedure linkage table.  */
 494 #define PLT_ENTRY_SIZE 32
 495
 496 #define GOT_ENTRY_SIZE 8
 497
 498 /* The first three entries in a procedure linkage table are reserved,
 499    and the initial contents are unimportant (we zero them out).
 500    Subsequent entries look like this.  See the SVR4 ABI 386
 501    supplement to see how this works.  */
 502
 503 /* For the s390, simple addr offset can only be 0 - 4096.
 504    To use the full 16777216 TB address space, several instructions
 505    are needed to load an address in a register and execute
 506    a branch( or just saving the address)
 507
 508    Furthermore, only r 0 and 1 are free to use!!!  */
 509
 510 /* The first 3 words in the GOT are then reserved.
 511    Word 0 is the address of the dynamic table.
 512    Word 1 is a pointer to a structure describing the object
 513    Word 2 is used to point to the loader entry address.
 514
 515    The code for PLT entries looks like this:
 516
 517    The GOT holds the address in the PLT to be executed.
 518    The loader then gets:
 519    24(15) =  Pointer to the structure describing the object.
 520    28(15) =  Offset in symbol table
 521    The loader  must  then find the module where the function is
 522    and insert the address in the GOT.
 523
 524    PLT1: LARL 1,<fn>@GOTENT # 6 bytes  Load address of GOT entry in r1
 525          LG   1,0(1)      # 6 bytes  Load address from GOT in r1
 526          BCR  15,1        # 2 bytes  Jump to address
 527    RET1: BASR 1,0         # 2 bytes  Return from GOT 1st time
 528          LGF  1,12(1)     # 6 bytes  Load offset in symbl table in r1
 529          BRCL 15,-x       # 6 bytes  Jump to start of PLT
 530          .long ?          # 4 bytes  offset into symbol table
 531
 532    Total = 32 bytes per PLT entry
 533    Fixup at offset 2: relative address to GOT entry
 534    Fixup at offset 22: relative branch to PLT0
 535    Fixup at offset 28: 32 bit offset into symbol table
 536
 537    A 32 bit offset into the symbol table is enough. It allows for symbol
 538    tables up to a size of 2 gigabyte. A single dynamic object (the main
 539    program, any shared library) is limited to 4GB in size and I want to see
 540    the program that manages to have a symbol table of more than 2 GB with a
 541    total size of at max 4 GB.  */
 542
 543 #define PLT_ENTRY_WORD0     (bfd_vma) 0xc0100000
 544 #define PLT_ENTRY_WORD1     (bfd_vma) 0x0000e310
 545 #define PLT_ENTRY_WORD2     (bfd_vma) 0x10000004
 546 #define PLT_ENTRY_WORD3     (bfd_vma) 0x07f10d10
 547 #define PLT_ENTRY_WORD4     (bfd_vma) 0xe310100c
 548 #define PLT_ENTRY_WORD5     (bfd_vma) 0x0014c0f4
 549 #define PLT_ENTRY_WORD6     (bfd_vma) 0x00000000
 550 #define PLT_ENTRY_WORD7     (bfd_vma) 0x00000000
 551
 552 /* The first PLT entry pushes the offset into the symbol table
 553    from R1 onto the stack at 8(15) and the loader object info
 554    at 12(15), loads the loader address in R1 and jumps to it.  */
 555
 556 /* The first entry in the PLT:
 557
 558   PLT0:
 559      STG  1,56(15)  # r1 contains the offset into the symbol table
 560      LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
 561      MVC  48(8,15),8(1) # move loader ino (object struct address) to stack
 562      LG   1,16(1)   # get entry address of loader
 563      BCR  15,1      # jump to loader
 564
 565      Fixup at offset 8: relative address to start of GOT.  */
 566
 567 #define PLT_FIRST_ENTRY_WORD0     (bfd_vma) 0xe310f038
 568 #define PLT_FIRST_ENTRY_WORD1     (bfd_vma) 0x0024c010
 569 #define PLT_FIRST_ENTRY_WORD2     (bfd_vma) 0x00000000
 570 #define PLT_FIRST_ENTRY_WORD3     (bfd_vma) 0xd207f030
 571 #define PLT_FIRST_ENTRY_WORD4     (bfd_vma) 0x1008e310
 572 #define PLT_FIRST_ENTRY_WORD5     (bfd_vma) 0x10100004
 573 #define PLT_FIRST_ENTRY_WORD6     (bfd_vma) 0x07f10700
 574 #define PLT_FIRST_ENTRY_WORD7     (bfd_vma) 0x07000700
 575
 576 /* The s390 linker needs to keep track of the number of relocs that it
 577    decides to copy as dynamic relocs in check_relocs for each symbol.
 578    This is so that it can later discard them if they are found to be
 579    unnecessary.  We store the information in a field extending the
 580    regular ELF linker hash table.  */
 581
 582 struct elf_s390_dyn_relocs
 583 {
 584   struct elf_s390_dyn_relocs *next;
 585
 586   /* The input section of the reloc.  */
 587   asection *sec;
 588
 589   /* Total number of relocs copied for the input section.  */
 590   bfd_size_type count;
 591
 592   /* Number of pc-relative relocs copied for the input section.  */
 593   bfd_size_type pc_count;
 594 };
 595
 596 /* s390 ELF linker hash entry.  */
 597
 598 struct elf_s390_link_hash_entry
 599 {
 600   struct elf_link_hash_entry elf;
 601
 602   /* Track dynamic relocs copied for this symbol.  */
 603   struct elf_s390_dyn_relocs *dyn_relocs;
 604
 605   /* Number of GOTPLT references for a function.  */
 606   bfd_signed_vma gotplt_refcount;
 607
 608 #define GOT_UNKNOWN     0
 609 #define GOT_NORMAL      1
 610 #define GOT_TLS_GD      2
 611 #define GOT_TLS_IE      3
 612 #define GOT_TLS_IE_NLT  3
 613   unsigned char tls_type;
 614 };
 615
 616 #define elf_s390_hash_entry(ent) \
 617   ((struct elf_s390_link_hash_entry *)(ent))
 618
 619 struct elf_s390_obj_tdata
 620 {
 621   struct elf_obj_tdata root;
 622
 623   /* tls_type for each local got entry.  */
 624   char *local_got_tls_type;
 625 };
 626
 627 #define elf_s390_tdata(abfd) \
 628   ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
 629
 630 #define elf_s390_local_got_tls_type(abfd) \
 631   (elf_s390_tdata (abfd)->local_got_tls_type)
 632
 633 static bfd_boolean
 634 elf_s390_mkobject (abfd)
 635      bfd *abfd;
 636 {
 637   bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
 638   abfd->tdata.any = bfd_zalloc (abfd, amt);
 639   if (abfd->tdata.any == NULL)
 640     return FALSE;
 641   return TRUE;
 642 }
 643
 644 static bfd_boolean
 645 elf_s390_object_p (abfd)
 646      bfd *abfd;
 647 {
 648   /* Set the right machine number for an s390 elf32 file.  */
 649   return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
 650 }
 651
 652 /* s390 ELF linker hash table.  */
 653
 654 struct elf_s390_link_hash_table
 655 {
 656   struct elf_link_hash_table elf;
 657
 658   /* Short-cuts to get to dynamic linker sections.  */
 659   asection *sgot;
 660   asection *sgotplt;
 661   asection *srelgot;
 662   asection *splt;
 663   asection *srelplt;
 664   asection *sdynbss;
 665   asection *srelbss;
 666
 667   union {
 668     bfd_signed_vma refcount;
 669     bfd_vma offset;
 670   } tls_ldm_got;
 671
 672   /* Small local sym to section mapping cache.  */
 673   struct sym_sec_cache sym_sec;
 674 };
 675
 676 /* Get the s390 ELF linker hash table from a link_info structure.  */
 677
 678 #define elf_s390_hash_table(p) \
 679   ((struct elf_s390_link_hash_table *) ((p)->hash))
 680
 681 /* Create an entry in an s390 ELF linker hash table.  */
 682
 683 static struct bfd_hash_entry *
 684 link_hash_newfunc (entry, table, string)
 685      struct bfd_hash_entry *entry;
 686      struct bfd_hash_table *table;
 687      const char *string;
 688 {
 689   /* Allocate the structure if it has not already been allocated by a
 690      subclass.  */
 691   if (entry == NULL)
 692     {
 693       entry = bfd_hash_allocate (table,
 694                                  sizeof (struct elf_s390_link_hash_entry));
 695       if (entry == NULL)
 696         return entry;
 697     }
 698
 699   /* Call the allocation method of the superclass.  */
 700   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
 701   if (entry != NULL)
 702     {
 703       struct elf_s390_link_hash_entry *eh;
 704
 705       eh = (struct elf_s390_link_hash_entry *) entry;
 706       eh->dyn_relocs = NULL;
 707       eh->gotplt_refcount = 0;
 708       eh->tls_type = GOT_UNKNOWN;
 709     }
 710
 711   return entry;
 712 }
 713
 714 /* Create an s390 ELF linker hash table.  */
 715
 716 static struct bfd_link_hash_table *
 717 elf_s390_link_hash_table_create (abfd)
 718      bfd *abfd;
 719 {
 720   struct elf_s390_link_hash_table *ret;
 721   bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
 722
 723   ret = (struct elf_s390_link_hash_table *) bfd_malloc (amt);
 724   if (ret == NULL)
 725     return NULL;
 726
 727   if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
 728     {
 729       free (ret);
 730       return NULL;
 731     }
 732
 733   ret->sgot = NULL;
 734   ret->sgotplt = NULL;
 735   ret->srelgot = NULL;
 736   ret->splt = NULL;
 737   ret->srelplt = NULL;
 738   ret->sdynbss = NULL;
 739   ret->srelbss = NULL;
 740   ret->tls_ldm_got.refcount = 0;
 741   ret->sym_sec.abfd = NULL;
 742
 743   return &ret->elf.root;
 744 }
 745
 746 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
 747    shortcuts to them in our hash table.  */
 748
 749 static bfd_boolean
 750 create_got_section (dynobj, info)
 751      bfd *dynobj;
 752      struct bfd_link_info *info;
 753 {
 754   struct elf_s390_link_hash_table *htab;
 755
 756   if (! _bfd_elf_create_got_section (dynobj, info))
 757     return FALSE;
 758
 759   htab = elf_s390_hash_table (info);
 760   htab->sgot = bfd_get_section_by_name (dynobj, ".got");
 761   htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
 762   if (!htab->sgot || !htab->sgotplt)
 763     abort ();
 764
 765   htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
 766                                                (SEC_ALLOC | SEC_LOAD
 767                                                 | SEC_HAS_CONTENTS
 768                                                 | SEC_IN_MEMORY
 769                                                 | SEC_LINKER_CREATED
 770                                                 | SEC_READONLY));
 771   if (htab->srelgot == NULL
 772       || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
 773     return FALSE;
 774   return TRUE;
 775 }
 776
 777 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
 778    .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
 779    hash table.  */
 780
 781 static bfd_boolean
 782 elf_s390_create_dynamic_sections (dynobj, info)
 783      bfd *dynobj;
 784      struct bfd_link_info *info;
 785 {
 786   struct elf_s390_link_hash_table *htab;
 787
 788   htab = elf_s390_hash_table (info);
 789   if (!htab->sgot && !create_got_section (dynobj, info))
 790     return FALSE;
 791
 792   if (!_bfd_elf_create_dynamic_sections (dynobj, info))
 793     return FALSE;
 794
 795   htab->splt = bfd_get_section_by_name (dynobj, ".plt");
 796   htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
 797   htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
 798   if (!info->shared)
 799     htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
 800
 801   if (!htab->splt || !htab->srelplt || !htab->sdynbss
 802       || (!info->shared && !htab->srelbss))
 803     abort ();
 804
 805   return TRUE;
 806 }
 807
 808 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 809
 810 static void
 811 elf_s390_copy_indirect_symbol (info, dir, ind)
 812      struct bfd_link_info *info;
 813      struct elf_link_hash_entry *dir, *ind;
 814 {
 815   struct elf_s390_link_hash_entry *edir, *eind;
 816
 817   edir = (struct elf_s390_link_hash_entry *) dir;
 818   eind = (struct elf_s390_link_hash_entry *) ind;
 819
 820   if (eind->dyn_relocs != NULL)
 821     {
 822       if (edir->dyn_relocs != NULL)
 823         {
 824           struct elf_s390_dyn_relocs **pp;
 825           struct elf_s390_dyn_relocs *p;
 826
 827           /* Add reloc counts against the indirect sym to the direct sym
 828              list.  Merge any entries against the same section.  */
 829           for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
 830             {
 831               struct elf_s390_dyn_relocs *q;
 832
 833               for (q = edir->dyn_relocs; q != NULL; q = q->next)
 834                 if (q->sec == p->sec)
 835                   {
 836                     q->pc_count += p->pc_count;
 837                     q->count += p->count;
 838                     *pp = p->next;
 839                     break;
 840                   }
 841               if (q == NULL)
 842                 pp = &p->next;
 843             }
 844           *pp = edir->dyn_relocs;
 845         }
 846
 847       edir->dyn_relocs = eind->dyn_relocs;
 848       eind->dyn_relocs = NULL;
 849     }
 850
 851   if (ind->root.type == bfd_link_hash_indirect
 852       && dir->got.refcount <= 0)
 853     {
 854       edir->tls_type = eind->tls_type;
 855       eind->tls_type = GOT_UNKNOWN;
 856     }
 857
 858   if (ELIMINATE_COPY_RELOCS
 859       && ind->root.type != bfd_link_hash_indirect
 860       && dir->dynamic_adjusted)
 861     {
 862       /* If called to transfer flags for a weakdef during processing
 863          of elf_adjust_dynamic_symbol, don't copy non_got_ref.
 864          We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
 865       dir->ref_dynamic |= ind->ref_dynamic;
 866       dir->ref_regular |= ind->ref_regular;
 867       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
 868       dir->needs_plt |= ind->needs_plt;
 869     }
 870   else
 871     _bfd_elf_link_hash_copy_indirect (info, dir, ind);
 872 }
 873
 874 static int
 875 elf_s390_tls_transition (info, r_type, is_local)
 876      struct bfd_link_info *info;
 877      int r_type;
 878      int is_local;
 879 {
 880   if (info->shared)
 881     return r_type;
 882
 883   switch (r_type)
 884     {
 885     case R_390_TLS_GD64:
 886     case R_390_TLS_IE64:
 887       if (is_local)
 888         return R_390_TLS_LE64;
 889       return R_390_TLS_IE64;
 890     case R_390_TLS_GOTIE64:
 891       if (is_local)
 892         return R_390_TLS_LE64;
 893       return R_390_TLS_GOTIE64;
 894     case R_390_TLS_LDM64:
 895       return R_390_TLS_LE64;
 896     }
 897
 898   return r_type;
 899 }
 900
 901 /* Look through the relocs for a section during the first phase, and
 902    allocate space in the global offset table or procedure linkage
 903    table.  */
 904
 905 static bfd_boolean
 906 elf_s390_check_relocs (abfd, info, sec, relocs)
 907      bfd *abfd;
 908      struct bfd_link_info *info;
 909      asection *sec;
 910      const Elf_Internal_Rela *relocs;
 911 {
 912   struct elf_s390_link_hash_table *htab;
 913   Elf_Internal_Shdr *symtab_hdr;
 914   struct elf_link_hash_entry **sym_hashes;
 915   const Elf_Internal_Rela *rel;
 916   const Elf_Internal_Rela *rel_end;
 917   asection *sreloc;
 918   bfd_signed_vma *local_got_refcounts;
 919   int tls_type, old_tls_type;
 920
 921   if (info->relocatable)
 922     return TRUE;
 923
 924   htab = elf_s390_hash_table (info);
 925   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
 926   sym_hashes = elf_sym_hashes (abfd);
 927   local_got_refcounts = elf_local_got_refcounts (abfd);
 928
 929   sreloc = NULL;
 930
 931   rel_end = relocs + sec->reloc_count;
 932   for (rel = relocs; rel < rel_end; rel++)
 933     {
 934       unsigned int r_type;
 935       unsigned long r_symndx;
 936       struct elf_link_hash_entry *h;
 937
 938       r_symndx = ELF64_R_SYM (rel->r_info);
 939
 940       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
 941         {
 942           (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
 943                                  abfd,
 944                                  r_symndx);
 945           return FALSE;
 946         }
 947
 948       if (r_symndx < symtab_hdr->sh_info)
 949         h = NULL;
 950       else
 951         {
 952           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
 953           while (h->root.type == bfd_link_hash_indirect
 954                  || h->root.type == bfd_link_hash_warning)
 955             h = (struct elf_link_hash_entry *) h->root.u.i.link;
 956         }
 957
 958       /* Create got section and local_got_refcounts array if they
 959          are needed.  */
 960       r_type = elf_s390_tls_transition (info,
 961                                         ELF64_R_TYPE (rel->r_info),
 962                                         h == NULL);
 963       switch (r_type)
 964         {
 965         case R_390_GOT12:
 966         case R_390_GOT16:
 967         case R_390_GOT20:
 968         case R_390_GOT32:
 969         case R_390_GOT64:
 970         case R_390_GOTENT:
 971         case R_390_GOTPLT12:
 972         case R_390_GOTPLT16:
 973         case R_390_GOTPLT20:
 974         case R_390_GOTPLT32:
 975         case R_390_GOTPLT64:
 976         case R_390_GOTPLTENT:
 977         case R_390_TLS_GD64:
 978         case R_390_TLS_GOTIE12:
 979         case R_390_TLS_GOTIE20:
 980         case R_390_TLS_GOTIE64:
 981         case R_390_TLS_IEENT:
 982         case R_390_TLS_IE64:
 983         case R_390_TLS_LDM64:
 984           if (h == NULL
 985               && local_got_refcounts == NULL)
 986             {
 987               bfd_size_type size;
 988
 989               size = symtab_hdr->sh_info;
 990               size *= (sizeof (bfd_signed_vma) + sizeof(char));
 991               local_got_refcounts = ((bfd_signed_vma *)
 992                                      bfd_zalloc (abfd, size));
 993               if (local_got_refcounts == NULL)
 994                 return FALSE;
 995               elf_local_got_refcounts (abfd) = local_got_refcounts;
 996               elf_s390_local_got_tls_type (abfd)
 997                 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
 998             }
 999           /* Fall through.  */
1000         case R_390_GOTOFF16:
1001         case R_390_GOTOFF32:
1002         case R_390_GOTOFF64:
1003         case R_390_GOTPC:
1004         case R_390_GOTPCDBL:
1005           if (htab->sgot == NULL)
1006             {
1007               if (htab->elf.dynobj == NULL)
1008                 htab->elf.dynobj = abfd;
1009               if (!create_got_section (htab->elf.dynobj, info))
1010                 return FALSE;
1011             }
1012         }
1013
1014       switch (r_type)
1015         {
1016         case R_390_GOTOFF16:
1017         case R_390_GOTOFF32:
1018         case R_390_GOTOFF64:
1019         case R_390_GOTPC:
1020         case R_390_GOTPCDBL:
1021           /* Got is created, nothing to be done.  */
1022           break;
1023
1024         case R_390_PLT16DBL:
1025         case R_390_PLT32:
1026         case R_390_PLT32DBL:
1027         case R_390_PLT64:
1028         case R_390_PLTOFF16:
1029         case R_390_PLTOFF32:
1030         case R_390_PLTOFF64:
1031           /* This symbol requires a procedure linkage table entry.  We
1032              actually build the entry in adjust_dynamic_symbol,
1033              because this might be a case of linking PIC code which is
1034              never referenced by a dynamic object, in which case we
1035              don't need to generate a procedure linkage table entry
1036              after all.  */
1037
1038           /* If this is a local symbol, we resolve it directly without
1039              creating a procedure linkage table entry.  */
1040           if (h != NULL)
1041             {
1042               h->needs_plt = 1;
1043               h->plt.refcount += 1;
1044             }
1045           break;
1046
1047         case R_390_GOTPLT12:
1048         case R_390_GOTPLT16:
1049         case R_390_GOTPLT20:
1050         case R_390_GOTPLT32:
1051         case R_390_GOTPLT64:
1052         case R_390_GOTPLTENT:
1053           /* This symbol requires either a procedure linkage table entry
1054              or an entry in the local got. We actually build the entry
1055              in adjust_dynamic_symbol because whether this is really a
1056              global reference can change and with it the fact if we have
1057              to create a plt entry or a local got entry. To be able to
1058              make a once global symbol a local one we have to keep track
1059              of the number of gotplt references that exist for this
1060              symbol.  */
1061           if (h != NULL)
1062             {
1063               ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
1064               h->needs_plt = 1;
1065               h->plt.refcount += 1;
1066             }
1067           else
1068             local_got_refcounts[r_symndx] += 1;
1069           break;
1070
1071         case R_390_TLS_LDM64:
1072           htab->tls_ldm_got.refcount += 1;
1073           break;
1074
1075         case R_390_TLS_IE64:
1076         case R_390_TLS_GOTIE12:
1077         case R_390_TLS_GOTIE20:
1078         case R_390_TLS_GOTIE64:
1079         case R_390_TLS_IEENT:
1080           if (info->shared)
1081             info->flags |= DF_STATIC_TLS;
1082           /* Fall through */
1083
1084         case R_390_GOT12:
1085         case R_390_GOT16:
1086         case R_390_GOT20:
1087         case R_390_GOT32:
1088         case R_390_GOT64:
1089         case R_390_GOTENT:
1090         case R_390_TLS_GD64:
1091           /* This symbol requires a global offset table entry.  */
1092           switch (r_type)
1093             {
1094             default:
1095             case R_390_GOT12:
1096             case R_390_GOT16:
1097             case R_390_GOT20:
1098             case R_390_GOT32:
1099             case R_390_GOTENT:
1100               tls_type = GOT_NORMAL;
1101               break;
1102             case R_390_TLS_GD64:
1103               tls_type = GOT_TLS_GD;
1104               break;
1105             case R_390_TLS_IE64:
1106             case R_390_TLS_GOTIE64:
1107               tls_type = GOT_TLS_IE;
1108               break;
1109             case R_390_TLS_GOTIE12:
1110             case R_390_TLS_GOTIE20:
1111             case R_390_TLS_IEENT:
1112               tls_type = GOT_TLS_IE_NLT;
1113               break;
1114             }
1115
1116           if (h != NULL)
1117             {
1118               h->got.refcount += 1;
1119               old_tls_type = elf_s390_hash_entry(h)->tls_type;
1120             }
1121           else
1122             {
1123               local_got_refcounts[r_symndx] += 1;
1124               old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
1125             }
1126           /* If a TLS symbol is accessed using IE at least once,
1127              there is no point to use dynamic model for it.  */
1128           if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
1129             {
1130               if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
1131                 {
1132                   (*_bfd_error_handler)
1133                     (_("%B: `%s' accessed both as normal and thread local symbol"),
1134                      abfd, h->root.root.string);
1135                   return FALSE;
1136                 }
1137               if (old_tls_type > tls_type)
1138                 tls_type = old_tls_type;
1139             }
1140
1141           if (old_tls_type != tls_type)
1142             {
1143               if (h != NULL)
1144                 elf_s390_hash_entry (h)->tls_type = tls_type;
1145               else
1146                 elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
1147             }
1148
1149           if (r_type != R_390_TLS_IE64)
1150             break;
1151           /* Fall through */
1152
1153         case R_390_TLS_LE64:
1154           if (!info->shared)
1155             break;
1156           info->flags |= DF_STATIC_TLS;
1157           /* Fall through */
1158
1159         case R_390_8:
1160         case R_390_16:
1161         case R_390_32:
1162         case R_390_64:
1163         case R_390_PC16:
1164         case R_390_PC16DBL:
1165         case R_390_PC32:
1166         case R_390_PC32DBL:
1167         case R_390_PC64:
1168           if (h != NULL && !info->shared)
1169             {
1170               /* If this reloc is in a read-only section, we might
1171                  need a copy reloc.  We can't check reliably at this
1172                  stage whether the section is read-only, as input
1173                  sections have not yet been mapped to output sections.
1174                  Tentatively set the flag for now, and correct in
1175                  adjust_dynamic_symbol.  */
1176               h->non_got_ref = 1;
1177
1178               /* We may need a .plt entry if the function this reloc
1179                  refers to is in a shared lib.  */
1180               h->plt.refcount += 1;
1181             }
1182
1183           /* If we are creating a shared library, and this is a reloc
1184              against a global symbol, or a non PC relative reloc
1185              against a local symbol, then we need to copy the reloc
1186              into the shared library.  However, if we are linking with
1187              -Bsymbolic, we do not need to copy a reloc against a
1188              global symbol which is defined in an object we are
1189              including in the link (i.e., DEF_REGULAR is set).  At
1190              this point we have not seen all the input files, so it is
1191              possible that DEF_REGULAR is not set now but will be set
1192              later (it is never cleared).  In case of a weak definition,
1193              DEF_REGULAR may be cleared later by a strong definition in
1194              a shared library. We account for that possibility below by
1195              storing information in the relocs_copied field of the hash
1196              table entry.  A similar situation occurs when creating
1197              shared libraries and symbol visibility changes render the
1198              symbol local.
1199
1200              If on the other hand, we are creating an executable, we
1201              may need to keep relocations for symbols satisfied by a
1202              dynamic library if we manage to avoid copy relocs for the
1203              symbol.  */
1204           if ((info->shared
1205                && (sec->flags & SEC_ALLOC) != 0
1206                && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
1207                     && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
1208                     && ELF64_R_TYPE (rel->r_info) != R_390_PC32
1209                     && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
1210                     && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
1211                    || (h != NULL
1212                        && (! info->symbolic
1213                            || h->root.type == bfd_link_hash_defweak
1214                            || !h->def_regular))))
1215               || (ELIMINATE_COPY_RELOCS
1216                   && !info->shared
1217                   && (sec->flags & SEC_ALLOC) != 0
1218                   && h != NULL
1219                   && (h->root.type == bfd_link_hash_defweak
1220                       || !h->def_regular)))
1221             {
1222               struct elf_s390_dyn_relocs *p;
1223               struct elf_s390_dyn_relocs **head;
1224
1225               /* We must copy these reloc types into the output file.
1226                  Create a reloc section in dynobj and make room for
1227                  this reloc.  */
1228               if (sreloc == NULL)
1229                 {
1230                   const char *name;
1231                   bfd *dynobj;
1232
1233                   name = (bfd_elf_string_from_elf_section
1234                           (abfd,
1235                            elf_elfheader (abfd)->e_shstrndx,
1236                            elf_section_data (sec)->rel_hdr.sh_name));
1237                   if (name == NULL)
1238                     return FALSE;
1239
1240                   if (strncmp (name, ".rela", 5) != 0
1241                       || strcmp (bfd_get_section_name (abfd, sec),
1242                                  name + 5) != 0)
1243                     {
1244                       (*_bfd_error_handler)
1245                         (_("%B: bad relocation section name `%s\'"),
1246                          abfd, name);
1247                     }
1248
1249                   if (htab->elf.dynobj == NULL)
1250                     htab->elf.dynobj = abfd;
1251
1252                   dynobj = htab->elf.dynobj;
1253                   sreloc = bfd_get_section_by_name (dynobj, name);
1254                   if (sreloc == NULL)
1255                     {
1256                       flagword flags;
1257
1258                       flags = (SEC_HAS_CONTENTS | SEC_READONLY
1259                                | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1260                       if ((sec->flags & SEC_ALLOC) != 0)
1261                         flags |= SEC_ALLOC | SEC_LOAD;
1262                       sreloc = bfd_make_section_with_flags (dynobj,
1263                                                             name,
1264                                                             flags);
1265                       if (sreloc == NULL
1266                           || ! bfd_set_section_alignment (dynobj, sreloc, 3))
1267                         return FALSE;
1268                     }
1269                   elf_section_data (sec)->sreloc = sreloc;
1270                 }
1271
1272               /* If this is a global symbol, we count the number of
1273                  relocations we need for this symbol.  */
1274               if (h != NULL)
1275                 {
1276                   head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
1277                 }
1278               else
1279                 {
1280                   /* Track dynamic relocs needed for local syms too.
1281                      We really need local syms available to do this
1282                      easily.  Oh well.  */
1283
1284                   asection *s;
1285                   void *vpp;
1286
1287                   s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1288                                                  sec, r_symndx);
1289                   if (s == NULL)
1290                     return FALSE;
1291
1292                   vpp = &elf_section_data (s)->local_dynrel;
1293                   head = (struct elf_s390_dyn_relocs **) vpp;
1294                 }
1295
1296               p = *head;
1297               if (p == NULL || p->sec != sec)
1298                 {
1299                   bfd_size_type amt = sizeof *p;
1300                   p = ((struct elf_s390_dyn_relocs *)
1301                        bfd_alloc (htab->elf.dynobj, amt));
1302                   if (p == NULL)
1303                     return FALSE;
1304                   p->next = *head;
1305                   *head = p;
1306                   p->sec = sec;
1307                   p->count = 0;
1308                   p->pc_count = 0;
1309                 }
1310
1311               p->count += 1;
1312               if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
1313                   || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
1314                   || ELF64_R_TYPE (rel->r_info) == R_390_PC32
1315                   || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
1316                   || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
1317                 p->pc_count += 1;
1318             }
1319           break;
1320
1321           /* This relocation describes the C++ object vtable hierarchy.
1322              Reconstruct it for later use during GC.  */
1323         case R_390_GNU_VTINHERIT:
1324           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1325             return FALSE;
1326           break;
1327
1328           /* This relocation describes which C++ vtable entries are actually
1329              used.  Record for later use during GC.  */
1330         case R_390_GNU_VTENTRY:
1331           if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1332             return FALSE;
1333           break;
1334
1335         default:
1336           break;
1337         }
1338     }
1339
1340   return TRUE;
1341 }
1342
1343 /* Return the section that should be marked against GC for a given
1344    relocation.  */
1345
1346 static asection *
1347 elf_s390_gc_mark_hook (sec, info, rel, h, sym)
1348      asection *sec;
1349      struct bfd_link_info *info ATTRIBUTE_UNUSED;
1350      Elf_Internal_Rela *rel;
1351      struct elf_link_hash_entry *h;
1352      Elf_Internal_Sym *sym;
1353 {
1354   if (h != NULL)
1355     {
1356       switch (ELF64_R_TYPE (rel->r_info))
1357         {
1358         case R_390_GNU_VTINHERIT:
1359         case R_390_GNU_VTENTRY:
1360           break;
1361
1362         default:
1363           switch (h->root.type)
1364             {
1365             case bfd_link_hash_defined:
1366             case bfd_link_hash_defweak:
1367               return h->root.u.def.section;
1368
1369             case bfd_link_hash_common:
1370               return h->root.u.c.p->section;
1371
1372             default:
1373               break;
1374             }
1375         }
1376     }
1377   else
1378     return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1379
1380   return NULL;
1381 }
1382
1383 /* Update the got entry reference counts for the section being removed.  */
1384
1385 static bfd_boolean
1386 elf_s390_gc_sweep_hook (abfd, info, sec, relocs)
1387      bfd *abfd;
1388      struct bfd_link_info *info;
1389      asection *sec;
1390      const Elf_Internal_Rela *relocs;
1391 {
1392   Elf_Internal_Shdr *symtab_hdr;
1393   struct elf_link_hash_entry **sym_hashes;
1394   bfd_signed_vma *local_got_refcounts;
1395   const Elf_Internal_Rela *rel, *relend;
1396
1397   elf_section_data (sec)->local_dynrel = NULL;
1398
1399   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1400   sym_hashes = elf_sym_hashes (abfd);
1401   local_got_refcounts = elf_local_got_refcounts (abfd);
1402
1403   relend = relocs + sec->reloc_count;
1404   for (rel = relocs; rel < relend; rel++)
1405     {
1406       unsigned long r_symndx;
1407       unsigned int r_type;
1408       struct elf_link_hash_entry *h = NULL;
1409
1410       r_symndx = ELF64_R_SYM (rel->r_info);
1411       if (r_symndx >= symtab_hdr->sh_info)
1412         {
1413           struct elf_s390_link_hash_entry *eh;
1414           struct elf_s390_dyn_relocs **pp;
1415           struct elf_s390_dyn_relocs *p;
1416
1417           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1418           while (h->root.type == bfd_link_hash_indirect
1419                  || h->root.type == bfd_link_hash_warning)
1420             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1421           eh = (struct elf_s390_link_hash_entry *) h;
1422
1423           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1424             if (p->sec == sec)
1425               {
1426                 /* Everything must go for SEC.  */
1427                 *pp = p->next;
1428                 break;
1429               }
1430         }
1431
1432       r_type = ELF64_R_TYPE (rel->r_info);
1433       r_type = elf_s390_tls_transition (info, r_type, h != NULL);
1434       switch (r_type)
1435         {
1436         case R_390_TLS_LDM64:
1437           if (elf_s390_hash_table (info)->tls_ldm_got.refcount > 0)
1438             elf_s390_hash_table (info)->tls_ldm_got.refcount -= 1;
1439           break;
1440
1441         case R_390_TLS_GD64:
1442         case R_390_TLS_IE64:
1443         case R_390_TLS_GOTIE12:
1444         case R_390_TLS_GOTIE20:
1445         case R_390_TLS_GOTIE64:
1446         case R_390_TLS_IEENT:
1447         case R_390_GOT12:
1448         case R_390_GOT16:
1449         case R_390_GOT20:
1450         case R_390_GOT32:
1451         case R_390_GOT64:
1452         case R_390_GOTOFF16:
1453         case R_390_GOTOFF32:
1454         case R_390_GOTOFF64:
1455         case R_390_GOTPC:
1456         case R_390_GOTPCDBL:
1457         case R_390_GOTENT:
1458           if (h != NULL)
1459             {
1460               if (h->got.refcount > 0)
1461                 h->got.refcount -= 1;
1462             }
1463           else if (local_got_refcounts != NULL)
1464             {
1465               if (local_got_refcounts[r_symndx] > 0)
1466                 local_got_refcounts[r_symndx] -= 1;
1467             }
1468           break;
1469
1470         case R_390_8:
1471         case R_390_12:
1472         case R_390_16:
1473         case R_390_20:
1474         case R_390_32:
1475         case R_390_64:
1476         case R_390_PC16:
1477         case R_390_PC16DBL:
1478         case R_390_PC32:
1479         case R_390_PC32DBL:
1480         case R_390_PC64:
1481           if (info->shared)
1482             break;
1483           /* Fall through */
1484
1485         case R_390_PLT16DBL:
1486         case R_390_PLT32:
1487         case R_390_PLT32DBL:
1488         case R_390_PLT64:
1489         case R_390_PLTOFF16:
1490         case R_390_PLTOFF32:
1491         case R_390_PLTOFF64:
1492           if (h != NULL)
1493             {
1494               if (h->plt.refcount > 0)
1495                 h->plt.refcount -= 1;
1496             }
1497           break;
1498
1499         case R_390_GOTPLT12:
1500         case R_390_GOTPLT16:
1501         case R_390_GOTPLT20:
1502         case R_390_GOTPLT32:
1503         case R_390_GOTPLT64:
1504         case R_390_GOTPLTENT:
1505           if (h != NULL)
1506             {
1507               if (h->plt.refcount > 0)
1508                 {
1509                   ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
1510                   h->plt.refcount -= 1;
1511                 }
1512             }
1513           else if (local_got_refcounts != NULL)
1514             {
1515               if (local_got_refcounts[r_symndx] > 0)
1516                 local_got_refcounts[r_symndx] -= 1;
1517             }
1518           break;
1519
1520         default:
1521           break;
1522         }
1523     }
1524
1525   return TRUE;
1526 }
1527
1528 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1529    entry but we found we will not create any.  Called when we find we will
1530    not have any PLT for this symbol, by for example
1531    elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
1532    or elf_s390_size_dynamic_sections if no dynamic sections will be
1533    created (we're only linking static objects).  */
1534
1535 static void
1536 elf_s390_adjust_gotplt (h)
1537      struct elf_s390_link_hash_entry *h;
1538 {
1539   if (h->elf.root.type == bfd_link_hash_warning)
1540     h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
1541
1542   if (h->gotplt_refcount <= 0)
1543     return;
1544
1545   /* We simply add the number of gotplt references to the number
1546    * of got references for this symbol.  */
1547   h->elf.got.refcount += h->gotplt_refcount;
1548   h->gotplt_refcount = -1;
1549 }
1550
1551 /* Adjust a symbol defined by a dynamic object and referenced by a
1552    regular object.  The current definition is in some section of the
1553    dynamic object, but we're not including those sections.  We have to
1554    change the definition to something the rest of the link can
1555    understand.  */
1556
1557 static bfd_boolean
1558 elf_s390_adjust_dynamic_symbol (info, h)
1559      struct bfd_link_info *info;
1560      struct elf_link_hash_entry *h;
1561 {
1562   struct elf_s390_link_hash_table *htab;
1563   asection *s;
1564   unsigned int power_of_two;
1565
1566   /* If this is a function, put it in the procedure linkage table.  We
1567      will fill in the contents of the procedure linkage table later
1568      (although we could actually do it here).  */
1569   if (h->type == STT_FUNC
1570       || h->needs_plt)
1571     {
1572       if (h->plt.refcount <= 0
1573           || (! info->shared
1574               && !h->def_dynamic
1575               && !h->ref_dynamic
1576               && h->root.type != bfd_link_hash_undefweak
1577               && h->root.type != bfd_link_hash_undefined))
1578         {
1579           /* This case can occur if we saw a PLT32 reloc in an input
1580              file, but the symbol was never referred to by a dynamic
1581              object, or if all references were garbage collected.  In
1582              such a case, we don't actually need to build a procedure
1583              linkage table, and we can just do a PC32 reloc instead.  */
1584           h->plt.offset = (bfd_vma) -1;
1585           h->needs_plt = 0;
1586           elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1587         }
1588
1589       return TRUE;
1590     }
1591   else
1592     /* It's possible that we incorrectly decided a .plt reloc was
1593        needed for an R_390_PC32 reloc to a non-function sym in
1594        check_relocs.  We can't decide accurately between function and
1595        non-function syms in check-relocs;  Objects loaded later in
1596        the link may change h->type.  So fix it now.  */
1597     h->plt.offset = (bfd_vma) -1;
1598
1599   /* If this is a weak symbol, and there is a real definition, the
1600      processor independent code will have arranged for us to see the
1601      real definition first, and we can just use the same value.  */
1602   if (h->u.weakdef != NULL)
1603     {
1604       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1605                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
1606       h->root.u.def.section = h->u.weakdef->root.u.def.section;
1607       h->root.u.def.value = h->u.weakdef->root.u.def.value;
1608       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1609         h->non_got_ref = h->u.weakdef->non_got_ref;
1610       return TRUE;
1611     }
1612
1613   /* This is a reference to a symbol defined by a dynamic object which
1614      is not a function.  */
1615
1616   /* If we are creating a shared library, we must presume that the
1617      only references to the symbol are via the global offset table.
1618      For such cases we need not do anything here; the relocations will
1619      be handled correctly by relocate_section.  */
1620   if (info->shared)
1621     return TRUE;
1622
1623   /* If there are no references to this symbol that do not use the
1624      GOT, we don't need to generate a copy reloc.  */
1625   if (!h->non_got_ref)
1626     return TRUE;
1627
1628   /* If -z nocopyreloc was given, we won't generate them either.  */
1629   if (info->nocopyreloc)
1630     {
1631       h->non_got_ref = 0;
1632       return TRUE;
1633     }
1634
1635   if (ELIMINATE_COPY_RELOCS)
1636     {
1637       struct elf_s390_link_hash_entry * eh;
1638       struct elf_s390_dyn_relocs *p;
1639
1640       eh = (struct elf_s390_link_hash_entry *) h;
1641       for (p = eh->dyn_relocs; p != NULL; p = p->next)
1642         {
1643           s = p->sec->output_section;
1644           if (s != NULL && (s->flags & SEC_READONLY) != 0)
1645             break;
1646         }
1647
1648       /* If we didn't find any dynamic relocs in read-only sections, then
1649          we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
1650       if (p == NULL)
1651         {
1652           h->non_got_ref = 0;
1653           return TRUE;
1654         }
1655     }
1656
1657   if (h->size == 0)
1658     {
1659       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1660                              h->root.root.string);
1661       return TRUE;
1662     }
1663
1664   /* We must allocate the symbol in our .dynbss section, which will
1665      become part of the .bss section of the executable.  There will be
1666      an entry for this symbol in the .dynsym section.  The dynamic
1667      object will contain position independent code, so all references
1668      from the dynamic object to this symbol will go through the global
1669      offset table.  The dynamic linker will use the .dynsym entry to
1670      determine the address it must put in the global offset table, so
1671      both the dynamic object and the regular object will refer to the
1672      same memory location for the variable.  */
1673
1674   htab = elf_s390_hash_table (info);
1675
1676   /* We must generate a R_390_COPY reloc to tell the dynamic linker to
1677      copy the initial value out of the dynamic object and into the
1678      runtime process image.  */
1679   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1680     {
1681       htab->srelbss->size += sizeof (Elf64_External_Rela);
1682       h->needs_copy = 1;
1683     }
1684
1685   /* We need to figure out the alignment required for this symbol.  I
1686      have no idea how ELF linkers handle this.  */
1687   power_of_two = bfd_log2 (h->size);
1688   if (power_of_two > 3)
1689     power_of_two = 3;
1690
1691   /* Apply the required alignment.  */
1692   s = htab->sdynbss;
1693   s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1694   if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1695     {
1696       if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1697         return FALSE;
1698     }
1699
1700   /* Define the symbol as being at this point in the section.  */
1701   h->root.u.def.section = s;
1702   h->root.u.def.value = s->size;
1703
1704   /* Increment the section size to make room for the symbol.  */
1705   s->size += h->size;
1706
1707   return TRUE;
1708 }
1709
1710 /* Allocate space in .plt, .got and associated reloc sections for
1711    dynamic relocs.  */
1712
1713 static bfd_boolean
1714 allocate_dynrelocs (h, inf)
1715      struct elf_link_hash_entry *h;
1716      PTR inf;
1717 {
1718   struct bfd_link_info *info;
1719   struct elf_s390_link_hash_table *htab;
1720   struct elf_s390_link_hash_entry *eh;
1721   struct elf_s390_dyn_relocs *p;
1722
1723   if (h->root.type == bfd_link_hash_indirect)
1724     return TRUE;
1725
1726   if (h->root.type == bfd_link_hash_warning)
1727     /* When warning symbols are created, they **replace** the "real"
1728        entry in the hash table, thus we never get to see the real
1729        symbol in a hash traversal.  So look at it now.  */
1730     h = (struct elf_link_hash_entry *) h->root.u.i.link;
1731
1732   info = (struct bfd_link_info *) inf;
1733   htab = elf_s390_hash_table (info);
1734
1735   if (htab->elf.dynamic_sections_created
1736       && h->plt.refcount > 0
1737       && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1738           || h->root.type != bfd_link_hash_undefweak))
1739     {
1740       /* Make sure this symbol is output as a dynamic symbol.
1741          Undefined weak syms won't yet be marked as dynamic.  */
1742       if (h->dynindx == -1
1743           && !h->forced_local)
1744         {
1745           if (! bfd_elf_link_record_dynamic_symbol (info, h))
1746             return FALSE;
1747         }
1748
1749       if (info->shared
1750           || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1751         {
1752           asection *s = htab->splt;
1753
1754           /* If this is the first .plt entry, make room for the special
1755              first entry.  */
1756           if (s->size == 0)
1757             s->size += PLT_FIRST_ENTRY_SIZE;
1758
1759           h->plt.offset = s->size;
1760
1761           /* If this symbol is not defined in a regular file, and we are
1762              not generating a shared library, then set the symbol to this
1763              location in the .plt.  This is required to make function
1764              pointers compare as equal between the normal executable and
1765              the shared library.  */
1766           if (! info->shared
1767               && !h->def_regular)
1768             {
1769               h->root.u.def.section = s;
1770               h->root.u.def.value = h->plt.offset;
1771             }
1772
1773           /* Make room for this entry.  */
1774           s->size += PLT_ENTRY_SIZE;
1775
1776           /* We also need to make an entry in the .got.plt section, which
1777              will be placed in the .got section by the linker script.  */
1778           htab->sgotplt->size += GOT_ENTRY_SIZE;
1779
1780           /* We also need to make an entry in the .rela.plt section.  */
1781           htab->srelplt->size += sizeof (Elf64_External_Rela);
1782         }
1783       else
1784         {
1785           h->plt.offset = (bfd_vma) -1;
1786           h->needs_plt = 0;
1787           elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1788         }
1789     }
1790   else
1791     {
1792       h->plt.offset = (bfd_vma) -1;
1793       h->needs_plt = 0;
1794       elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
1795     }
1796
1797   /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
1798      the binary, we can optimize a bit. IE64 and GOTIE64 get converted
1799      to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
1800      we can save the dynamic TLS relocation.  */
1801   if (h->got.refcount > 0
1802       && !info->shared
1803       && h->dynindx == -1
1804       && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
1805     {
1806       if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
1807         /* For the GOTIE access without a literal pool entry the offset has
1808            to be stored somewhere. The immediate value in the instruction
1809            is not bit enough so the value is stored in the got.  */
1810         {
1811           h->got.offset = htab->sgot->size;
1812           htab->sgot->size += GOT_ENTRY_SIZE;
1813         }
1814       else
1815         h->got.offset = (bfd_vma) -1;
1816     }
1817   else if (h->got.refcount > 0)
1818     {
1819       asection *s;
1820       bfd_boolean dyn;
1821       int tls_type = elf_s390_hash_entry(h)->tls_type;
1822
1823       /* Make sure this symbol is output as a dynamic symbol.
1824          Undefined weak syms won't yet be marked as dynamic.  */
1825       if (h->dynindx == -1
1826           && !h->forced_local)
1827         {
1828           if (! bfd_elf_link_record_dynamic_symbol (info, h))
1829             return FALSE;
1830         }
1831
1832       s = htab->sgot;
1833       h->got.offset = s->size;
1834       s->size += GOT_ENTRY_SIZE;
1835       /* R_390_TLS_GD64 needs 2 consecutive GOT slots.  */
1836       if (tls_type == GOT_TLS_GD)
1837         s->size += GOT_ENTRY_SIZE;
1838       dyn = htab->elf.dynamic_sections_created;
1839       /* R_390_TLS_IE64 needs one dynamic relocation,
1840          R_390_TLS_GD64 needs one if local symbol and two if global.  */
1841       if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1842           || tls_type >= GOT_TLS_IE)
1843         htab->srelgot->size += sizeof (Elf64_External_Rela);
1844       else if (tls_type == GOT_TLS_GD)
1845         htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
1846       else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1847                 || h->root.type != bfd_link_hash_undefweak)
1848                && (info->shared
1849                    || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1850         htab->srelgot->size += sizeof (Elf64_External_Rela);
1851     }
1852   else
1853     h->got.offset = (bfd_vma) -1;
1854
1855   eh = (struct elf_s390_link_hash_entry *) h;
1856   if (eh->dyn_relocs == NULL)
1857     return TRUE;
1858
1859   /* In the shared -Bsymbolic case, discard space allocated for
1860      dynamic pc-relative relocs against symbols which turn out to be
1861      defined in regular objects.  For the normal shared case, discard
1862      space for pc-relative relocs that have become local due to symbol
1863      visibility changes.  */
1864
1865   if (info->shared)
1866     {
1867       if (SYMBOL_REFERENCES_LOCAL (info, h))
1868         {
1869           struct elf_s390_dyn_relocs **pp;
1870
1871           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1872             {
1873               p->count -= p->pc_count;
1874               p->pc_count = 0;
1875               if (p->count == 0)
1876                 *pp = p->next;
1877               else
1878                 pp = &p->next;
1879             }
1880         }
1881
1882       /* Also discard relocs on undefined weak syms with non-default
1883          visibility.  */
1884       if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1885           && h->root.type == bfd_link_hash_undefweak)
1886         eh->dyn_relocs = NULL;
1887     }
1888   else if (ELIMINATE_COPY_RELOCS)
1889     {
1890       /* For the non-shared case, discard space for relocs against
1891          symbols which turn out to need copy relocs or are not
1892          dynamic.  */
1893
1894       if (!h->non_got_ref
1895           && ((h->def_dynamic
1896                && !h->def_regular)
1897               || (htab->elf.dynamic_sections_created
1898                   && (h->root.type == bfd_link_hash_undefweak
1899                       || h->root.type == bfd_link_hash_undefined))))
1900         {
1901           /* Make sure this symbol is output as a dynamic symbol.
1902              Undefined weak syms won't yet be marked as dynamic.  */
1903           if (h->dynindx == -1
1904               && !h->forced_local)
1905             {
1906               if (! bfd_elf_link_record_dynamic_symbol (info, h))
1907                 return FALSE;
1908             }
1909
1910           /* If that succeeded, we know we'll be keeping all the
1911              relocs.  */
1912           if (h->dynindx != -1)
1913             goto keep;
1914         }
1915
1916       eh->dyn_relocs = NULL;
1917
1918     keep: ;
1919     }
1920
1921   /* Finally, allocate space.  */
1922   for (p = eh->dyn_relocs; p != NULL; p = p->next)
1923     {
1924       asection *sreloc = elf_section_data (p->sec)->sreloc;
1925       sreloc->size += p->count * sizeof (Elf64_External_Rela);
1926     }
1927
1928   return TRUE;
1929 }
1930
1931 /* Find any dynamic relocs that apply to read-only sections.  */
1932
1933 static bfd_boolean
1934 readonly_dynrelocs (h, inf)
1935      struct elf_link_hash_entry *h;
1936      PTR inf;
1937 {
1938   struct elf_s390_link_hash_entry *eh;
1939   struct elf_s390_dyn_relocs *p;
1940
1941   if (h->root.type == bfd_link_hash_warning)
1942     h = (struct elf_link_hash_entry *) h->root.u.i.link;
1943
1944   eh = (struct elf_s390_link_hash_entry *) h;
1945   for (p = eh->dyn_relocs; p != NULL; p = p->next)
1946     {
1947       asection *s = p->sec->output_section;
1948
1949       if (s != NULL && (s->flags & SEC_READONLY) != 0)
1950         {
1951           struct bfd_link_info *info = (struct bfd_link_info *) inf;
1952
1953           info->flags |= DF_TEXTREL;
1954
1955           /* Not an error, just cut short the traversal.  */
1956           return FALSE;
1957         }
1958     }
1959   return TRUE;
1960 }
1961
1962 /* Set the sizes of the dynamic sections.  */
1963
1964 static bfd_boolean
1965 elf_s390_size_dynamic_sections (output_bfd, info)
1966      bfd *output_bfd ATTRIBUTE_UNUSED;
1967      struct bfd_link_info *info;
1968 {
1969   struct elf_s390_link_hash_table *htab;
1970   bfd *dynobj;
1971   asection *s;
1972   bfd_boolean relocs;
1973   bfd *ibfd;
1974
1975   htab = elf_s390_hash_table (info);
1976   dynobj = htab->elf.dynobj;
1977   if (dynobj == NULL)
1978     abort ();
1979
1980   if (htab->elf.dynamic_sections_created)
1981     {
1982       /* Set the contents of the .interp section to the interpreter.  */
1983       if (info->executable)
1984         {
1985           s = bfd_get_section_by_name (dynobj, ".interp");
1986           if (s == NULL)
1987             abort ();
1988           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1989           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1990         }
1991     }
1992
1993   /* Set up .got offsets for local syms, and space for local dynamic
1994      relocs.  */
1995   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1996     {
1997       bfd_signed_vma *local_got;
1998       bfd_signed_vma *end_local_got;
1999       char *local_tls_type;
2000       bfd_size_type locsymcount;
2001       Elf_Internal_Shdr *symtab_hdr;
2002       asection *srela;
2003
2004       if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2005         continue;
2006
2007       for (s = ibfd->sections; s != NULL; s = s->next)
2008         {
2009           struct elf_s390_dyn_relocs *p;
2010
2011           for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2012             {
2013               if (!bfd_is_abs_section (p->sec)
2014                   && bfd_is_abs_section (p->sec->output_section))
2015                 {
2016                   /* Input section has been discarded, either because
2017                      it is a copy of a linkonce section or due to
2018                      linker script /DISCARD/, so we'll be discarding
2019                      the relocs too.  */
2020                 }
2021               else if (p->count != 0)
2022                 {
2023                   srela = elf_section_data (p->sec)->sreloc;
2024                   srela->size += p->count * sizeof (Elf64_External_Rela);
2025                   if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2026                     info->flags |= DF_TEXTREL;
2027                 }
2028             }
2029         }
2030
2031       local_got = elf_local_got_refcounts (ibfd);
2032       if (!local_got)
2033         continue;
2034
2035       symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2036       locsymcount = symtab_hdr->sh_info;
2037       end_local_got = local_got + locsymcount;
2038       local_tls_type = elf_s390_local_got_tls_type (ibfd);
2039       s = htab->sgot;
2040       srela = htab->srelgot;
2041       for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2042         {
2043           if (*local_got > 0)
2044             {
2045               *local_got = s->size;
2046               s->size += GOT_ENTRY_SIZE;
2047               if (*local_tls_type == GOT_TLS_GD)
2048                 s->size += GOT_ENTRY_SIZE;
2049               if (info->shared)
2050                 srela->size += sizeof (Elf64_External_Rela);
2051             }
2052           else
2053             *local_got = (bfd_vma) -1;
2054         }
2055     }
2056
2057   if (htab->tls_ldm_got.refcount > 0)
2058     {
2059       /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
2060          relocs.  */
2061       htab->tls_ldm_got.offset = htab->sgot->size;
2062       htab->sgot->size += 2 * GOT_ENTRY_SIZE;
2063       htab->srelgot->size += sizeof (Elf64_External_Rela);
2064     }
2065   else
2066     htab->tls_ldm_got.offset = -1;
2067
2068   /* Allocate global sym .plt and .got entries, and space for global
2069      sym dynamic relocs.  */
2070   elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2071
2072   /* We now have determined the sizes of the various dynamic sections.
2073      Allocate memory for them.  */
2074   relocs = FALSE;
2075   for (s = dynobj->sections; s != NULL; s = s->next)
2076     {
2077       if ((s->flags & SEC_LINKER_CREATED) == 0)
2078         continue;
2079
2080       if (s == htab->splt
2081           || s == htab->sgot
2082           || s == htab->sgotplt
2083           || s == htab->sdynbss)
2084         {
2085           /* Strip this section if we don't need it; see the
2086              comment below.  */
2087         }
2088       else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2089         {
2090           if (s->size != 0 && s != htab->srelplt)
2091             relocs = TRUE;
2092
2093           /* We use the reloc_count field as a counter if we need
2094              to copy relocs into the output file.  */
2095           s->reloc_count = 0;
2096         }
2097       else
2098         {
2099           /* It's not one of our sections, so don't allocate space.  */
2100           continue;
2101         }
2102
2103       if (s->size == 0)
2104         {
2105           /* If we don't need this section, strip it from the
2106              output file.  This is to handle .rela.bss and
2107              .rela.plt.  We must create it in
2108              create_dynamic_sections, because it must be created
2109              before the linker maps input sections to output
2110              sections.  The linker does that before
2111              adjust_dynamic_symbol is called, and it is that
2112              function which decides whether anything needs to go
2113              into these sections.  */
2114
2115           s->flags |= SEC_EXCLUDE;
2116           continue;
2117         }
2118
2119       if ((s->flags & SEC_HAS_CONTENTS) == 0)
2120         continue;
2121
2122       /* Allocate memory for the section contents.  We use bfd_zalloc
2123          here in case unused entries are not reclaimed before the
2124          section's contents are written out.  This should not happen,
2125          but this way if it does, we get a R_390_NONE reloc instead
2126          of garbage.  */
2127       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2128       if (s->contents == NULL)
2129         return FALSE;
2130     }
2131
2132   if (htab->elf.dynamic_sections_created)
2133     {
2134       /* Add some entries to the .dynamic section.  We fill in the
2135          values later, in elf_s390_finish_dynamic_sections, but we
2136          must add the entries now so that we get the correct size for
2137          the .dynamic section.  The DT_DEBUG entry is filled in by the
2138          dynamic linker and used by the debugger.  */
2139 #define add_dynamic_entry(TAG, VAL) \
2140   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2141
2142       if (info->executable)
2143         {
2144           if (!add_dynamic_entry (DT_DEBUG, 0))
2145             return FALSE;
2146         }
2147
2148       if (htab->splt->size != 0)
2149         {
2150           if (!add_dynamic_entry (DT_PLTGOT, 0)
2151               || !add_dynamic_entry (DT_PLTRELSZ, 0)
2152               || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2153               || !add_dynamic_entry (DT_JMPREL, 0))
2154             return FALSE;
2155         }
2156
2157       if (relocs)
2158         {
2159           if (!add_dynamic_entry (DT_RELA, 0)
2160               || !add_dynamic_entry (DT_RELASZ, 0)
2161               || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2162             return FALSE;
2163
2164           /* If any dynamic relocs apply to a read-only section,
2165              then we need a DT_TEXTREL entry.  */
2166           if ((info->flags & DF_TEXTREL) == 0)
2167             elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2168                                     (PTR) info);
2169
2170           if ((info->flags & DF_TEXTREL) != 0)
2171             {
2172               if (!add_dynamic_entry (DT_TEXTREL, 0))
2173                 return FALSE;
2174             }
2175         }
2176     }
2177 #undef add_dynamic_entry
2178
2179   return TRUE;
2180 }
2181
2182 /* Return the base VMA address which should be subtracted from real addresses
2183    when resolving @dtpoff relocation.
2184    This is PT_TLS segment p_vaddr.  */
2185
2186 static bfd_vma
2187 dtpoff_base (info)
2188      struct bfd_link_info *info;
2189 {
2190   /* If tls_sec is NULL, we should have signalled an error already.  */
2191   if (elf_hash_table (info)->tls_sec == NULL)
2192     return 0;
2193   return elf_hash_table (info)->tls_sec->vma;
2194 }
2195
2196 /* Return the relocation value for @tpoff relocation
2197    if STT_TLS virtual address is ADDRESS.  */
2198
2199 static bfd_vma
2200 tpoff (info, address)
2201      struct bfd_link_info *info;
2202      bfd_vma address;
2203 {
2204   struct elf_link_hash_table *htab = elf_hash_table (info);
2205
2206   /* If tls_sec is NULL, we should have signalled an error already.  */
2207   if (htab->tls_sec == NULL)
2208     return 0;
2209   return htab->tls_size + htab->tls_sec->vma - address;
2210 }
2211
2212 /* Complain if TLS instruction relocation is against an invalid
2213    instruction.  */
2214
2215 static void
2216 invalid_tls_insn (input_bfd, input_section, rel)
2217      bfd *input_bfd;
2218      asection *input_section;
2219      Elf_Internal_Rela *rel;
2220 {
2221   reloc_howto_type *howto;
2222
2223   howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
2224   (*_bfd_error_handler)
2225     (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
2226      input_bfd,
2227      input_section,
2228      (long) rel->r_offset,
2229      howto->name);
2230 }
2231
2232 /* Relocate a 390 ELF section.  */
2233
2234 static bfd_boolean
2235 elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
2236                               contents, relocs, local_syms, local_sections)
2237      bfd *output_bfd;
2238      struct bfd_link_info *info;
2239      bfd *input_bfd;
2240      asection *input_section;
2241      bfd_byte *contents;
2242      Elf_Internal_Rela *relocs;
2243      Elf_Internal_Sym *local_syms;
2244      asection **local_sections;
2245 {
2246   struct elf_s390_link_hash_table *htab;
2247   Elf_Internal_Shdr *symtab_hdr;
2248   struct elf_link_hash_entry **sym_hashes;
2249   bfd_vma *local_got_offsets;
2250   Elf_Internal_Rela *rel;
2251   Elf_Internal_Rela *relend;
2252
2253   if (info->relocatable)
2254     return TRUE;
2255
2256   htab = elf_s390_hash_table (info);
2257   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2258   sym_hashes = elf_sym_hashes (input_bfd);
2259   local_got_offsets = elf_local_got_offsets (input_bfd);
2260
2261   rel = relocs;
2262   relend = relocs + input_section->reloc_count;
2263   for (; rel < relend; rel++)
2264     {
2265       unsigned int r_type;
2266       reloc_howto_type *howto;
2267       unsigned long r_symndx;
2268       struct elf_link_hash_entry *h;
2269       Elf_Internal_Sym *sym;
2270       asection *sec;
2271       bfd_vma off;
2272       bfd_vma relocation;
2273       bfd_boolean unresolved_reloc;
2274       bfd_reloc_status_type r;
2275       int tls_type;
2276
2277       r_type = ELF64_R_TYPE (rel->r_info);
2278       if (r_type == (int) R_390_GNU_VTINHERIT
2279           || r_type == (int) R_390_GNU_VTENTRY)
2280         continue;
2281       if (r_type >= (int) R_390_max)
2282         {
2283           bfd_set_error (bfd_error_bad_value);
2284           return FALSE;
2285         }
2286
2287       howto = elf_howto_table + r_type;
2288       r_symndx = ELF64_R_SYM (rel->r_info);
2289
2290       /* This is a final link.  */
2291       h = NULL;
2292       sym = NULL;
2293       sec = NULL;
2294       unresolved_reloc = FALSE;
2295       if (r_symndx < symtab_hdr->sh_info)
2296         {
2297           sym = local_syms + r_symndx;
2298           sec = local_sections[r_symndx];
2299           relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2300         }
2301       else
2302         {
2303           bfd_boolean warned ATTRIBUTE_UNUSED;
2304
2305           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2306                                    r_symndx, symtab_hdr, sym_hashes,
2307                                    h, sec, relocation,
2308                                    unresolved_reloc, warned);
2309         }
2310
2311       switch (r_type)
2312         {
2313         case R_390_GOTPLT12:
2314         case R_390_GOTPLT16:
2315         case R_390_GOTPLT20:
2316         case R_390_GOTPLT32:
2317         case R_390_GOTPLT64:
2318         case R_390_GOTPLTENT:
2319           /* There are three cases for a GOTPLT relocation. 1) The
2320              relocation is against the jump slot entry of a plt that
2321              will get emitted to the output file. 2) The relocation
2322              is against the jump slot of a plt entry that has been
2323              removed. elf_s390_adjust_gotplt has created a GOT entry
2324              as replacement. 3) The relocation is against a local symbol.
2325              Cases 2) and 3) are the same as the GOT relocation code
2326              so we just have to test for case 1 and fall through for
2327              the other two.  */
2328           if (h != NULL && h->plt.offset != (bfd_vma) -1)
2329             {
2330               bfd_vma plt_index;
2331
2332               /* Calc. index no.
2333                  Current offset - size first entry / entry size.  */
2334               plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
2335                 PLT_ENTRY_SIZE;
2336
2337               /* Offset in GOT is PLT index plus GOT headers(3) times 4,
2338                  addr & GOT addr.  */
2339               relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
2340               unresolved_reloc = FALSE;
2341
2342               if (r_type == R_390_GOTPLTENT)
2343                 relocation += htab->sgot->output_section->vma;
2344               break;
2345             }
2346           /* Fall through.  */
2347
2348         case R_390_GOT12:
2349         case R_390_GOT16:
2350         case R_390_GOT20:
2351         case R_390_GOT32:
2352         case R_390_GOT64:
2353         case R_390_GOTENT:
2354           /* Relocation is to the entry for this symbol in the global
2355              offset table.  */
2356           if (htab->sgot == NULL)
2357             abort ();
2358
2359           if (h != NULL)
2360             {
2361               bfd_boolean dyn;
2362
2363               off = h->got.offset;
2364               dyn = htab->elf.dynamic_sections_created;
2365               if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2366                   || (info->shared
2367                       && (info->symbolic
2368                           || h->dynindx == -1
2369                           || h->forced_local)
2370                       && h->def_regular)
2371                   || (ELF_ST_VISIBILITY (h->other)
2372                       && h->root.type == bfd_link_hash_undefweak))
2373                 {
2374                   /* This is actually a static link, or it is a
2375                      -Bsymbolic link and the symbol is defined
2376                      locally, or the symbol was forced to be local
2377                      because of a version file.  We must initialize
2378                      this entry in the global offset table.  Since the
2379                      offset must always be a multiple of 2, we use the
2380                      least significant bit to record whether we have
2381                      initialized it already.
2382
2383                      When doing a dynamic link, we create a .rel.got
2384                      relocation entry to initialize the value.  This
2385                      is done in the finish_dynamic_symbol routine.  */
2386                   if ((off & 1) != 0)
2387                     off &= ~1;
2388                   else
2389                     {
2390                       bfd_put_64 (output_bfd, relocation,
2391                                   htab->sgot->contents + off);
2392                       h->got.offset |= 1;
2393                     }
2394                 }
2395               else
2396                 unresolved_reloc = FALSE;
2397             }
2398           else
2399             {
2400               if (local_got_offsets == NULL)
2401                 abort ();
2402
2403               off = local_got_offsets[r_symndx];
2404
2405               /* The offset must always be a multiple of 8.  We use
2406                  the least significant bit to record whether we have
2407                  already generated the necessary reloc.  */
2408               if ((off & 1) != 0)
2409                 off &= ~1;
2410               else
2411                 {
2412                   bfd_put_64 (output_bfd, relocation,
2413                               htab->sgot->contents + off);
2414
2415                   if (info->shared)
2416                     {
2417                       asection *s;
2418                       Elf_Internal_Rela outrel;
2419                       bfd_byte *loc;
2420
2421                       s = htab->srelgot;
2422                       if (s == NULL)
2423                         abort ();
2424
2425                       outrel.r_offset = (htab->sgot->output_section->vma
2426                                          + htab->sgot->output_offset
2427                                          + off);
2428                       outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2429                       outrel.r_addend = relocation;
2430                       loc = s->contents;
2431                       loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
2432                       bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2433                     }
2434
2435                   local_got_offsets[r_symndx] |= 1;
2436                 }
2437             }
2438
2439           if (off >= (bfd_vma) -2)
2440             abort ();
2441
2442           relocation = htab->sgot->output_offset + off;
2443
2444           /* For @GOTENT the relocation is against the offset between
2445              the instruction and the symbols entry in the GOT and not
2446              between the start of the GOT and the symbols entry. We
2447              add the vma of the GOT to get the correct value.  */
2448           if (   r_type == R_390_GOTENT
2449               || r_type == R_390_GOTPLTENT)
2450             relocation += htab->sgot->output_section->vma;
2451
2452           break;
2453
2454         case R_390_GOTOFF16:
2455         case R_390_GOTOFF32:
2456         case R_390_GOTOFF64:
2457           /* Relocation is relative to the start of the global offset
2458              table.  */
2459
2460           /* Note that sgot->output_offset is not involved in this
2461              calculation.  We always want the start of .got.  If we
2462              defined _GLOBAL_OFFSET_TABLE in a different way, as is
2463              permitted by the ABI, we might have to change this
2464              calculation.  */
2465           relocation -= htab->sgot->output_section->vma;
2466           break;
2467
2468         case R_390_GOTPC:
2469         case R_390_GOTPCDBL:
2470           /* Use global offset table as symbol value.  */
2471           relocation = htab->sgot->output_section->vma;
2472           unresolved_reloc = FALSE;
2473           break;
2474
2475         case R_390_PLT16DBL:
2476         case R_390_PLT32:
2477         case R_390_PLT32DBL:
2478         case R_390_PLT64:
2479           /* Relocation is to the entry for this symbol in the
2480              procedure linkage table.  */
2481
2482           /* Resolve a PLT32 reloc against a local symbol directly,
2483              without using the procedure linkage table.  */
2484           if (h == NULL)
2485             break;
2486
2487           if (h->plt.offset == (bfd_vma) -1
2488               || htab->splt == NULL)
2489             {
2490               /* We didn't make a PLT entry for this symbol.  This
2491                  happens when statically linking PIC code, or when
2492                  using -Bsymbolic.  */
2493               break;
2494             }
2495
2496           relocation = (htab->splt->output_section->vma
2497                         + htab->splt->output_offset
2498                         + h->plt.offset);
2499           unresolved_reloc = FALSE;
2500           break;
2501
2502         case R_390_PLTOFF16:
2503         case R_390_PLTOFF32:
2504         case R_390_PLTOFF64:
2505           /* Relocation is to the entry for this symbol in the
2506              procedure linkage table relative to the start of the GOT.  */
2507
2508           /* For local symbols or if we didn't make a PLT entry for
2509              this symbol resolve the symbol directly.  */
2510           if (   h == NULL
2511               || h->plt.offset == (bfd_vma) -1
2512               || htab->splt == NULL)
2513             {
2514               relocation -= htab->sgot->output_section->vma;
2515               break;
2516             }
2517
2518           relocation = (htab->splt->output_section->vma
2519                         + htab->splt->output_offset
2520                         + h->plt.offset
2521                         - htab->sgot->output_section->vma);
2522           unresolved_reloc = FALSE;
2523           break;
2524
2525         case R_390_8:
2526         case R_390_16:
2527         case R_390_32:
2528         case R_390_64:
2529         case R_390_PC16:
2530         case R_390_PC16DBL:
2531         case R_390_PC32:
2532         case R_390_PC32DBL:
2533         case R_390_PC64:
2534           /* r_symndx will be zero only for relocs against symbols
2535              from removed linkonce sections, or sections discarded by
2536              a linker script.  */
2537           if (r_symndx == 0
2538               || (input_section->flags & SEC_ALLOC) == 0)
2539             break;
2540
2541           if ((info->shared
2542                && (h == NULL
2543                    || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2544                    || h->root.type != bfd_link_hash_undefweak)
2545                && ((r_type != R_390_PC16
2546                     && r_type != R_390_PC16DBL
2547                     && r_type != R_390_PC32
2548                     && r_type != R_390_PC32DBL
2549                     && r_type != R_390_PC64)
2550                    || (h != NULL
2551                        && !SYMBOL_REFERENCES_LOCAL (info, h))))
2552               || (ELIMINATE_COPY_RELOCS
2553                   && !info->shared
2554                   && h != NULL
2555                   && h->dynindx != -1
2556                   && !h->non_got_ref
2557                   && ((h->def_dynamic
2558                        && !h->def_regular)
2559                       || h->root.type == bfd_link_hash_undefweak
2560                       || h->root.type == bfd_link_hash_undefined)))
2561             {
2562               Elf_Internal_Rela outrel;
2563               bfd_boolean skip, relocate;
2564               asection *sreloc;
2565               bfd_byte *loc;
2566
2567               /* When generating a shared object, these relocations
2568                  are copied into the output file to be resolved at run
2569                  time.  */
2570               skip = FALSE;
2571               relocate = FALSE;
2572
2573               outrel.r_offset =
2574                 _bfd_elf_section_offset (output_bfd, info, input_section,
2575                                          rel->r_offset);
2576               if (outrel.r_offset == (bfd_vma) -1)
2577                 skip = TRUE;
2578               else if (outrel.r_offset == (bfd_vma) -2)
2579                 skip = TRUE, relocate = TRUE;
2580
2581               outrel.r_offset += (input_section->output_section->vma
2582                                   + input_section->output_offset);
2583
2584               if (skip)
2585                 memset (&outrel, 0, sizeof outrel);
2586               else if (h != NULL
2587                        && h->dynindx != -1
2588                        && (r_type == R_390_PC16
2589                            || r_type == R_390_PC16DBL
2590                            || r_type == R_390_PC32
2591                            || r_type == R_390_PC32DBL
2592                            || r_type == R_390_PC64
2593                            || !info->shared
2594                            || !info->symbolic
2595                            || !h->def_regular))
2596                 {
2597                   outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
2598                   outrel.r_addend = rel->r_addend;
2599                 }
2600               else
2601                 {
2602                   /* This symbol is local, or marked to become local.  */
2603                   outrel.r_addend = relocation + rel->r_addend;
2604                   if (r_type == R_390_64)
2605                     {
2606                       relocate = TRUE;
2607                       outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2608                     }
2609                   else
2610                     {
2611                       long sindx;
2612
2613                       if (bfd_is_abs_section (sec))
2614                         sindx = 0;
2615                       else if (sec == NULL || sec->owner == NULL)
2616                         {
2617                           bfd_set_error(bfd_error_bad_value);
2618                           return FALSE;
2619                         }
2620                       else
2621                         {
2622                           asection *osec;
2623
2624                           osec = sec->output_section;
2625                           sindx = elf_section_data (osec)->dynindx;
2626                           BFD_ASSERT (sindx > 0);
2627
2628                           /* We are turning this relocation into one
2629                              against a section symbol, so subtract out
2630                              the output section's address but not the
2631                              offset of the input section in the output
2632                              section.  */
2633
2634                           outrel.r_addend -= osec->vma;
2635                         }
2636                       outrel.r_info = ELF64_R_INFO (sindx, r_type);
2637                     }
2638                 }
2639
2640               sreloc = elf_section_data (input_section)->sreloc;
2641               if (sreloc == NULL)
2642                 abort ();
2643
2644               loc = sreloc->contents;
2645               loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2646               bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2647
2648               /* If this reloc is against an external symbol, we do
2649                  not want to fiddle with the addend.  Otherwise, we
2650                  need to include the symbol value so that it becomes
2651                  an addend for the dynamic reloc.  */
2652               if (! relocate)
2653                 continue;
2654             }
2655
2656           break;
2657
2658           /* Relocations for tls literal pool entries.  */
2659         case R_390_TLS_IE64:
2660           if (info->shared)
2661             {
2662               Elf_Internal_Rela outrel;
2663               asection *sreloc;
2664               bfd_byte *loc;
2665
2666               outrel.r_offset = rel->r_offset
2667                                 + input_section->output_section->vma
2668                                 + input_section->output_offset;
2669               outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
2670               sreloc = elf_section_data (input_section)->sreloc;
2671               if (sreloc == NULL)
2672                 abort ();
2673               loc = sreloc->contents;
2674               loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2675               bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
2676             }
2677           /* Fall through.  */
2678
2679         case R_390_TLS_GD64:
2680         case R_390_TLS_GOTIE64:
2681           r_type = elf_s390_tls_transition (info, r_type, h == NULL);
2682           tls_type = GOT_UNKNOWN;
2683           if (h == NULL && local_got_offsets)
2684             tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2685           else if (h != NULL)
2686             {
2687               tls_type = elf_s390_hash_entry(h)->tls_type;
2688               if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
2689                 r_type = R_390_TLS_LE64;
2690             }
2691           if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
2692             r_type = R_390_TLS_IE64;
2693
2694           if (r_type == R_390_TLS_LE64)
2695             {
2696               /* This relocation gets optimized away by the local exec
2697                  access optimization.  */
2698               BFD_ASSERT (! unresolved_reloc);
2699               bfd_put_64 (output_bfd, -tpoff (info, relocation),
2700                           contents + rel->r_offset);
2701               continue;
2702             }
2703
2704           if (htab->sgot == NULL)
2705             abort ();
2706
2707           if (h != NULL)
2708             off = h->got.offset;
2709           else
2710             {
2711               if (local_got_offsets == NULL)
2712                 abort ();
2713
2714               off = local_got_offsets[r_symndx];
2715             }
2716
2717         emit_tls_relocs:
2718
2719           if ((off & 1) != 0)
2720             off &= ~1;
2721           else
2722             {
2723               Elf_Internal_Rela outrel;
2724               bfd_byte *loc;
2725               int dr_type, indx;
2726
2727               if (htab->srelgot == NULL)
2728                 abort ();
2729
2730               outrel.r_offset = (htab->sgot->output_section->vma
2731                                  + htab->sgot->output_offset + off);
2732
2733               indx = h && h->dynindx != -1 ? h->dynindx : 0;
2734               if (r_type == R_390_TLS_GD64)
2735                 dr_type = R_390_TLS_DTPMOD;
2736               else
2737                 dr_type = R_390_TLS_TPOFF;
2738               if (dr_type == R_390_TLS_TPOFF && indx == 0)
2739                 outrel.r_addend = relocation - dtpoff_base (info);
2740               else
2741                 outrel.r_addend = 0;
2742               outrel.r_info = ELF64_R_INFO (indx, dr_type);
2743               loc = htab->srelgot->contents;
2744               loc += htab->srelgot->reloc_count++
2745                 * sizeof (Elf64_External_Rela);
2746               bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2747
2748               if (r_type == R_390_TLS_GD64)
2749                 {
2750                   if (indx == 0)
2751                     {
2752                       BFD_ASSERT (! unresolved_reloc);
2753                       bfd_put_64 (output_bfd,
2754                                   relocation - dtpoff_base (info),
2755                                   htab->sgot->contents + off + GOT_ENTRY_SIZE);
2756                     }
2757                   else
2758                     {
2759                       outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
2760                       outrel.r_offset += GOT_ENTRY_SIZE;
2761                       outrel.r_addend = 0;
2762                       htab->srelgot->reloc_count++;
2763                       loc += sizeof (Elf64_External_Rela);
2764                       bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2765                     }
2766                 }
2767
2768               if (h != NULL)
2769                 h->got.offset |= 1;
2770               else
2771                 local_got_offsets[r_symndx] |= 1;
2772             }
2773
2774           if (off >= (bfd_vma) -2)
2775             abort ();
2776           if (r_type == ELF64_R_TYPE (rel->r_info))
2777             {
2778               relocation = htab->sgot->output_offset + off;
2779               if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
2780                 relocation += htab->sgot->output_section->vma;
2781               unresolved_reloc = FALSE;
2782             }
2783           else
2784             {
2785               bfd_put_64 (output_bfd, htab->sgot->output_offset + off,
2786                           contents + rel->r_offset);
2787               continue;
2788             }
2789           break;
2790
2791         case R_390_TLS_GOTIE12:
2792         case R_390_TLS_GOTIE20:
2793         case R_390_TLS_IEENT:
2794           if (h == NULL)
2795             {
2796               if (local_got_offsets == NULL)
2797                 abort();
2798               off = local_got_offsets[r_symndx];
2799               if (info->shared)
2800                 goto emit_tls_relocs;
2801             }
2802           else
2803             {
2804               off = h->got.offset;
2805               tls_type = elf_s390_hash_entry(h)->tls_type;
2806               if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
2807                 goto emit_tls_relocs;
2808             }
2809
2810           if (htab->sgot == NULL)
2811             abort ();
2812
2813           BFD_ASSERT (! unresolved_reloc);
2814           bfd_put_64 (output_bfd, -tpoff (info, relocation),
2815                       htab->sgot->contents + off);
2816           relocation = htab->sgot->output_offset + off;
2817           if (r_type == R_390_TLS_IEENT)
2818             relocation += htab->sgot->output_section->vma;
2819           unresolved_reloc = FALSE;
2820           break;
2821
2822         case R_390_TLS_LDM64:
2823           if (! info->shared)
2824             /* The literal pool entry this relocation refers to gets ignored
2825                by the optimized code of the local exec model. Do nothing
2826                and the value will turn out zero.  */
2827             continue;
2828
2829           if (htab->sgot == NULL)
2830             abort ();
2831
2832           off = htab->tls_ldm_got.offset;
2833           if (off & 1)
2834             off &= ~1;
2835           else
2836             {
2837               Elf_Internal_Rela outrel;
2838               bfd_byte *loc;
2839
2840               if (htab->srelgot == NULL)
2841                 abort ();
2842
2843               outrel.r_offset = (htab->sgot->output_section->vma
2844                                  + htab->sgot->output_offset + off);
2845
2846               bfd_put_64 (output_bfd, 0,
2847                           htab->sgot->contents + off + GOT_ENTRY_SIZE);
2848               outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
2849               outrel.r_addend = 0;
2850               loc = htab->srelgot->contents;
2851               loc += htab->srelgot->reloc_count++
2852                 * sizeof (Elf64_External_Rela);
2853               bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2854               htab->tls_ldm_got.offset |= 1;
2855             }
2856           relocation = htab->sgot->output_offset + off;
2857           unresolved_reloc = FALSE;
2858           break;
2859
2860         case R_390_TLS_LE64:
2861           if (info->shared)
2862             {
2863               /* Linking a shared library with non-fpic code requires
2864                  a R_390_TLS_TPOFF relocation.  */
2865               Elf_Internal_Rela outrel;
2866               asection *sreloc;
2867               bfd_byte *loc;
2868               int indx;
2869
2870               outrel.r_offset = rel->r_offset
2871                                 + input_section->output_section->vma
2872                                 + input_section->output_offset;
2873               if (h != NULL && h->dynindx != -1)
2874                 indx = h->dynindx;
2875               else
2876                 indx = 0;
2877               outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
2878               if (indx == 0)
2879                 outrel.r_addend = relocation - dtpoff_base (info);
2880               else
2881                 outrel.r_addend = 0;
2882               sreloc = elf_section_data (input_section)->sreloc;
2883               if (sreloc == NULL)
2884                 abort ();
2885               loc = sreloc->contents;
2886               loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
2887               bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
2888             }
2889           else
2890             {
2891               BFD_ASSERT (! unresolved_reloc);
2892               bfd_put_64 (output_bfd, -tpoff (info, relocation),
2893                           contents + rel->r_offset);
2894             }
2895           continue;
2896
2897         case R_390_TLS_LDO64:
2898           if (info->shared || (input_section->flags & SEC_CODE) == 0)
2899             relocation -= dtpoff_base (info);
2900           else
2901             /* When converting LDO to LE, we must negate.  */
2902             relocation = -tpoff (info, relocation);
2903           break;
2904
2905           /* Relocations for tls instructions.  */
2906         case R_390_TLS_LOAD:
2907         case R_390_TLS_GDCALL:
2908         case R_390_TLS_LDCALL:
2909           tls_type = GOT_UNKNOWN;
2910           if (h == NULL && local_got_offsets)
2911             tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
2912           else if (h != NULL)
2913             tls_type = elf_s390_hash_entry(h)->tls_type;
2914
2915           if (tls_type == GOT_TLS_GD)
2916             continue;
2917
2918           if (r_type == R_390_TLS_LOAD)
2919             {
2920               if (!info->shared && (h == NULL || h->dynindx == -1))
2921                 {
2922                   /* IE->LE transition. Four valid cases:
2923                      lg %rx,(0,%ry)    -> sllg %rx,%ry,0
2924                      lg %rx,(%ry,0)    -> sllg %rx,%ry,0
2925                      lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
2926                      lg %rx,(%r12,%ry) -> sllg %rx,%ry,0  */
2927                   unsigned int insn0, insn1, ry;
2928
2929                   insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2930                   insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2931                   if (insn1 != 0x0004)
2932                     invalid_tls_insn (input_bfd, input_section, rel);
2933                   ry = 0;
2934                   if ((insn0 & 0xff00f000) == 0xe3000000)
2935                     /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0  */
2936                     ry = (insn0 & 0x000f0000);
2937                   else if ((insn0 & 0xff0f0000) == 0xe3000000)
2938                     /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0  */
2939                     ry = (insn0 & 0x0000f000) << 4;
2940                   else if ((insn0 & 0xff00f000) == 0xe300c000)
2941                     /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0  */
2942                     ry = (insn0 & 0x000f0000);
2943                   else if ((insn0 & 0xff0f0000) == 0xe30c0000)
2944                     /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0  */
2945                     ry = (insn0 & 0x0000f000) << 4;
2946                   else
2947                     invalid_tls_insn (input_bfd, input_section, rel);
2948                   insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
2949                   insn1 = 0x000d;
2950                   bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2951                   bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2952                 }
2953             }
2954           else if (r_type == R_390_TLS_GDCALL)
2955             {
2956               unsigned int insn0, insn1;
2957
2958               insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2959               insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2960               if ((insn0 & 0xffff0000) != 0xc0e50000)
2961                 invalid_tls_insn (input_bfd, input_section, rel);
2962               if (!info->shared && (h == NULL || h->dynindx == -1))
2963                 {
2964                   /* GD->LE transition.
2965                      brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2966                   insn0 = 0xc0040000;
2967                   insn1 = 0x0000;
2968                 }
2969               else
2970                 {
2971                   /* GD->IE transition.
2972                      brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12)  */
2973                   insn0 = 0xe322c000;
2974                   insn1 = 0x0004;
2975                 }
2976               bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2977               bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2978             }
2979           else if (r_type == R_390_TLS_LDCALL)
2980             {
2981               if (!info->shared)
2982                 {
2983                   unsigned int insn0, insn1;
2984
2985                   insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
2986                   insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
2987                   if ((insn0 & 0xffff0000) != 0xc0e50000)
2988                     invalid_tls_insn (input_bfd, input_section, rel);
2989                   /* LD->LE transition.
2990                      brasl %r14,__tls_get_addr@plt -> brcl 0,. */
2991                   insn0 = 0xc0040000;
2992                   insn1 = 0x0000;
2993                   bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
2994                   bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
2995                 }
2996             }
2997           continue;
2998
2999         default:
3000           break;
3001         }
3002
3003       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3004          because such sections are not SEC_ALLOC and thus ld.so will
3005          not process them.  */
3006       if (unresolved_reloc
3007           && !((input_section->flags & SEC_DEBUGGING) != 0
3008                && h->def_dynamic))
3009         (*_bfd_error_handler)
3010           (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3011            input_bfd,
3012            input_section,
3013            (long) rel->r_offset,
3014            howto->name,
3015            h->root.root.string);
3016
3017       if (r_type == R_390_20
3018           || r_type == R_390_GOT20
3019           || r_type == R_390_GOTPLT20
3020           || r_type == R_390_TLS_GOTIE20)
3021         {
3022           relocation += rel->r_addend;
3023           relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
3024           r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3025                                         contents, rel->r_offset,
3026                                         relocation, 0);
3027         }
3028       else
3029         r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3030                                       contents, rel->r_offset,
3031                                       relocation, rel->r_addend);
3032
3033       if (r != bfd_reloc_ok)
3034         {
3035           const char *name;
3036
3037           if (h != NULL)
3038             name = h->root.root.string;
3039           else
3040             {
3041               name = bfd_elf_string_from_elf_section (input_bfd,
3042                                                       symtab_hdr->sh_link,
3043                                                       sym->st_name);
3044               if (name == NULL)
3045                 return FALSE;
3046               if (*name == '\0')
3047                 name = bfd_section_name (input_bfd, sec);
3048             }
3049
3050           if (r == bfd_reloc_overflow)
3051             {
3052
3053               if (! ((*info->callbacks->reloc_overflow)
3054                      (info, (h ? &h->root : NULL), name, howto->name,
3055                       (bfd_vma) 0, input_bfd, input_section,
3056                       rel->r_offset)))
3057                 return FALSE;
3058             }
3059           else
3060             {
3061               (*_bfd_error_handler)
3062                 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3063                  input_bfd, input_section,
3064                  (long) rel->r_offset, name, (int) r);
3065               return FALSE;
3066             }
3067         }
3068     }
3069
3070   return TRUE;
3071 }
3072
3073 /* Finish up dynamic symbol handling.  We set the contents of various
3074    dynamic sections here.  */
3075
3076 static bfd_boolean
3077 elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym)
3078      bfd *output_bfd;
3079      struct bfd_link_info *info;
3080      struct elf_link_hash_entry *h;
3081      Elf_Internal_Sym *sym;
3082 {
3083   struct elf_s390_link_hash_table *htab;
3084
3085   htab = elf_s390_hash_table (info);
3086
3087   if (h->plt.offset != (bfd_vma) -1)
3088     {
3089       bfd_vma plt_index;
3090       bfd_vma got_offset;
3091       Elf_Internal_Rela rela;
3092       bfd_byte *loc;
3093
3094       /* This symbol has an entry in the procedure linkage table.  Set
3095          it up.  */
3096
3097       if (h->dynindx == -1
3098           || htab->splt == NULL
3099           || htab->sgotplt == NULL
3100           || htab->srelplt == NULL)
3101         abort ();
3102
3103       /* Calc. index no.
3104          Current offset - size first entry / entry size.  */
3105       plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3106
3107       /* Offset in GOT is PLT index plus GOT headers(3) times 8,
3108          addr & GOT addr.  */
3109       got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
3110
3111       /* Fill in the blueprint of a PLT.  */
3112       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD0,
3113                   htab->splt->contents + h->plt.offset);
3114       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD1,
3115                   htab->splt->contents + h->plt.offset + 4);
3116       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
3117                   htab->splt->contents + h->plt.offset + 8);
3118       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
3119                   htab->splt->contents + h->plt.offset + 12);
3120       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD4,
3121                   htab->splt->contents + h->plt.offset + 16);
3122       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD5,
3123                   htab->splt->contents + h->plt.offset + 20);
3124       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD6,
3125                   htab->splt->contents + h->plt.offset + 24);
3126       bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD7,
3127                   htab->splt->contents + h->plt.offset + 28);
3128       /* Fixup the relative address to the GOT entry */
3129       bfd_put_32 (output_bfd,
3130                   (htab->sgotplt->output_section->vma +
3131                    htab->sgotplt->output_offset + got_offset
3132                    - (htab->splt->output_section->vma + h->plt.offset))/2,
3133                   htab->splt->contents + h->plt.offset + 2);
3134       /* Fixup the relative branch to PLT 0 */
3135       bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
3136                                  (PLT_ENTRY_SIZE * plt_index) + 22)/2,
3137                   htab->splt->contents + h->plt.offset + 24);
3138       /* Fixup offset into symbol table */
3139       bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
3140                   htab->splt->contents + h->plt.offset + 28);
3141
3142       /* Fill in the entry in the global offset table.
3143          Points to instruction after GOT offset.  */
3144       bfd_put_64 (output_bfd,
3145                   (htab->splt->output_section->vma
3146                    + htab->splt->output_offset
3147                    + h->plt.offset
3148                    + 14),
3149                   htab->sgotplt->contents + got_offset);
3150
3151       /* Fill in the entry in the .rela.plt section.  */
3152       rela.r_offset = (htab->sgotplt->output_section->vma
3153                        + htab->sgotplt->output_offset
3154                        + got_offset);
3155       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
3156       rela.r_addend = 0;
3157       loc = htab->srelplt->contents + plt_index * sizeof (Elf64_External_Rela);
3158       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3159
3160       if (!h->def_regular)
3161         {
3162           /* Mark the symbol as undefined, rather than as defined in
3163              the .plt section.  Leave the value alone.  This is a clue
3164              for the dynamic linker, to make function pointer
3165              comparisons work between an application and shared
3166              library.  */
3167           sym->st_shndx = SHN_UNDEF;
3168         }
3169     }
3170
3171   if (h->got.offset != (bfd_vma) -1
3172       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
3173       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
3174       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
3175     {
3176       Elf_Internal_Rela rela;
3177       bfd_byte *loc;
3178
3179       /* This symbol has an entry in the global offset table.  Set it
3180          up.  */
3181       if (htab->sgot == NULL || htab->srelgot == NULL)
3182         abort ();
3183
3184       rela.r_offset = (htab->sgot->output_section->vma
3185                        + htab->sgot->output_offset
3186                        + (h->got.offset &~ (bfd_vma) 1));
3187
3188       /* If this is a static link, or it is a -Bsymbolic link and the
3189          symbol is defined locally or was forced to be local because
3190          of a version file, we just want to emit a RELATIVE reloc.
3191          The entry in the global offset table will already have been
3192          initialized in the relocate_section function.  */
3193       if (info->shared
3194           && (info->symbolic
3195               || h->dynindx == -1
3196               || h->forced_local)
3197           && h->def_regular)
3198         {
3199           BFD_ASSERT((h->got.offset & 1) != 0);
3200           rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
3201           rela.r_addend = (h->root.u.def.value
3202                            + h->root.u.def.section->output_section->vma
3203                            + h->root.u.def.section->output_offset);
3204         }
3205       else
3206         {
3207           BFD_ASSERT((h->got.offset & 1) == 0);
3208           bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgot->contents + h->got.offset);
3209           rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
3210           rela.r_addend = 0;
3211         }
3212
3213       loc = htab->srelgot->contents;
3214       loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
3215       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3216     }
3217
3218   if (h->needs_copy)
3219     {
3220       Elf_Internal_Rela rela;
3221       bfd_byte *loc;
3222
3223       /* This symbols needs a copy reloc.  Set it up.  */
3224
3225       if (h->dynindx == -1
3226           || (h->root.type != bfd_link_hash_defined
3227               && h->root.type != bfd_link_hash_defweak)
3228           || htab->srelbss == NULL)
3229         abort ();
3230
3231       rela.r_offset = (h->root.u.def.value
3232                        + h->root.u.def.section->output_section->vma
3233                        + h->root.u.def.section->output_offset);
3234       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
3235       rela.r_addend = 0;
3236       loc = htab->srelbss->contents;
3237       loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
3238       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3239     }
3240
3241   /* Mark some specially defined symbols as absolute.  */
3242   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3243       || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3244       || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
3245     sym->st_shndx = SHN_ABS;
3246
3247   return TRUE;
3248 }
3249
3250 /* Used to decide how to sort relocs in an optimal manner for the
3251    dynamic linker, before writing them out.  */
3252
3253 static enum elf_reloc_type_class
3254 elf_s390_reloc_type_class (rela)
3255      const Elf_Internal_Rela *rela;
3256 {
3257   switch ((int) ELF64_R_TYPE (rela->r_info))
3258     {
3259     case R_390_RELATIVE:
3260       return reloc_class_relative;
3261     case R_390_JMP_SLOT:
3262       return reloc_class_plt;
3263     case R_390_COPY:
3264       return reloc_class_copy;
3265     default:
3266       return reloc_class_normal;
3267     }
3268 }
3269
3270 /* Finish up the dynamic sections.  */
3271
3272 static bfd_boolean
3273 elf_s390_finish_dynamic_sections (output_bfd, info)
3274      bfd *output_bfd;
3275      struct bfd_link_info *info;
3276 {
3277   struct elf_s390_link_hash_table *htab;
3278   bfd *dynobj;
3279   asection *sdyn;
3280
3281   htab = elf_s390_hash_table (info);
3282   dynobj = htab->elf.dynobj;
3283   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3284
3285   if (htab->elf.dynamic_sections_created)
3286     {
3287       Elf64_External_Dyn *dyncon, *dynconend;
3288
3289       if (sdyn == NULL || htab->sgot == NULL)
3290         abort ();
3291
3292       dyncon = (Elf64_External_Dyn *) sdyn->contents;
3293       dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
3294       for (; dyncon < dynconend; dyncon++)
3295         {
3296           Elf_Internal_Dyn dyn;
3297           asection *s;
3298
3299           bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3300
3301           switch (dyn.d_tag)
3302             {
3303             default:
3304               continue;
3305
3306             case DT_PLTGOT:
3307               dyn.d_un.d_ptr = htab->sgot->output_section->vma;
3308               break;
3309
3310             case DT_JMPREL:
3311               dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3312               break;
3313
3314             case DT_PLTRELSZ:
3315               s = htab->srelplt->output_section;
3316               dyn.d_un.d_val = s->size;
3317               break;
3318
3319             case DT_RELASZ:
3320               /* The procedure linkage table relocs (DT_JMPREL) should
3321                  not be included in the overall relocs (DT_RELA).
3322                  Therefore, we override the DT_RELASZ entry here to
3323                  make it not include the JMPREL relocs.  Since the
3324                  linker script arranges for .rela.plt to follow all
3325                  other relocation sections, we don't have to worry
3326                  about changing the DT_RELA entry.  */
3327               s = htab->srelplt->output_section;
3328               dyn.d_un.d_val -= s->size;
3329               break;
3330             }
3331
3332           bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3333         }
3334
3335       /* Fill in the special first entry in the procedure linkage table.  */
3336       if (htab->splt && htab->splt->size > 0)
3337         {
3338           /* fill in blueprint for plt 0 entry */
3339           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD0,
3340                       htab->splt->contents );
3341           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD1,
3342                       htab->splt->contents +4 );
3343           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD3,
3344                       htab->splt->contents +12 );
3345           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD4,
3346                       htab->splt->contents +16 );
3347           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD5,
3348                       htab->splt->contents +20 );
3349           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD6,
3350                       htab->splt->contents + 24);
3351           bfd_put_32 (output_bfd, (bfd_vma) PLT_FIRST_ENTRY_WORD7,
3352                       htab->splt->contents + 28 );
3353           /* Fixup relative address to start of GOT */
3354           bfd_put_32 (output_bfd,
3355                       (htab->sgotplt->output_section->vma +
3356                        htab->sgotplt->output_offset
3357                        - htab->splt->output_section->vma - 6)/2,
3358                       htab->splt->contents + 8);
3359         }
3360       elf_section_data (htab->splt->output_section)
3361         ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
3362     }
3363
3364   if (htab->sgotplt)
3365     {
3366       /* Fill in the first three entries in the global offset table.  */
3367       if (htab->sgotplt->size > 0)
3368         {
3369           bfd_put_64 (output_bfd,
3370                       (sdyn == NULL ? (bfd_vma) 0
3371                        : sdyn->output_section->vma + sdyn->output_offset),
3372                       htab->sgotplt->contents);
3373           /* One entry for shared object struct ptr.  */
3374           bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
3375           /* One entry for _dl_runtime_resolve.  */
3376           bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 12);
3377         }
3378
3379       elf_section_data (htab->sgot->output_section)
3380         ->this_hdr.sh_entsize = 8;
3381     }
3382   return TRUE;
3383 }
3384
3385 /* Return address for Ith PLT stub in section PLT, for relocation REL
3386    or (bfd_vma) -1 if it should not be included.  */
3387
3388 static bfd_vma
3389 elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
3390                       const arelent *rel ATTRIBUTE_UNUSED)
3391 {
3392   return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
3393 }
3394
3395
3396 /* Why was the hash table entry size definition changed from
3397    ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
3398    this is the only reason for the s390_elf64_size_info structure.  */
3399
3400 const struct elf_size_info s390_elf64_size_info =
3401 {
3402   sizeof (Elf64_External_Ehdr),
3403   sizeof (Elf64_External_Phdr),
3404   sizeof (Elf64_External_Shdr),
3405   sizeof (Elf64_External_Rel),
3406   sizeof (Elf64_External_Rela),
3407   sizeof (Elf64_External_Sym),
3408   sizeof (Elf64_External_Dyn),
3409   sizeof (Elf_External_Note),
3410   8,            /* hash-table entry size.  */
3411   1,            /* internal relocations per external relocations.  */
3412   64,           /* arch_size.  */
3413   3,            /* log_file_align.  */
3414   ELFCLASS64, EV_CURRENT,
3415   bfd_elf64_write_out_phdrs,
3416   bfd_elf64_write_shdrs_and_ehdr,
3417   bfd_elf64_write_relocs,
3418   bfd_elf64_swap_symbol_in,
3419   bfd_elf64_swap_symbol_out,
3420   bfd_elf64_slurp_reloc_table,
3421   bfd_elf64_slurp_symbol_table,
3422   bfd_elf64_swap_dyn_in,
3423   bfd_elf64_swap_dyn_out,
3424   bfd_elf64_swap_reloc_in,
3425   bfd_elf64_swap_reloc_out,
3426   bfd_elf64_swap_reloca_in,
3427   bfd_elf64_swap_reloca_out
3428 };
3429
3430 #define TARGET_BIG_SYM  bfd_elf64_s390_vec
3431 #define TARGET_BIG_NAME "elf64-s390"
3432 #define ELF_ARCH        bfd_arch_s390
3433 #define ELF_MACHINE_CODE EM_S390
3434 #define ELF_MACHINE_ALT1 EM_S390_OLD
3435 #define ELF_MAXPAGESIZE 0x1000
3436
3437 #define elf_backend_size_info           s390_elf64_size_info
3438
3439 #define elf_backend_can_gc_sections     1
3440 #define elf_backend_can_refcount        1
3441 #define elf_backend_want_got_plt        1
3442 #define elf_backend_plt_readonly        1
3443 #define elf_backend_want_plt_sym        0
3444 #define elf_backend_got_header_size     24
3445 #define elf_backend_rela_normal         1
3446
3447 #define elf_info_to_howto               elf_s390_info_to_howto
3448
3449 #define bfd_elf64_bfd_is_local_label_name     elf_s390_is_local_label_name
3450 #define bfd_elf64_bfd_link_hash_table_create  elf_s390_link_hash_table_create
3451 #define bfd_elf64_bfd_reloc_type_lookup       elf_s390_reloc_type_lookup
3452
3453 #define elf_backend_adjust_dynamic_symbol     elf_s390_adjust_dynamic_symbol
3454 #define elf_backend_check_relocs              elf_s390_check_relocs
3455 #define elf_backend_copy_indirect_symbol      elf_s390_copy_indirect_symbol
3456 #define elf_backend_create_dynamic_sections   elf_s390_create_dynamic_sections
3457 #define elf_backend_finish_dynamic_sections   elf_s390_finish_dynamic_sections
3458 #define elf_backend_finish_dynamic_symbol     elf_s390_finish_dynamic_symbol
3459 #define elf_backend_gc_mark_hook              elf_s390_gc_mark_hook
3460 #define elf_backend_gc_sweep_hook             elf_s390_gc_sweep_hook
3461 #define elf_backend_reloc_type_class          elf_s390_reloc_type_class
3462 #define elf_backend_relocate_section          elf_s390_relocate_section
3463 #define elf_backend_size_dynamic_sections     elf_s390_size_dynamic_sections
3464 #define elf_backend_reloc_type_class          elf_s390_reloc_type_class
3465 #define elf_backend_plt_sym_val               elf_s390_plt_sym_val
3466
3467 #define bfd_elf64_mkobject              elf_s390_mkobject
3468 #define elf_backend_object_p            elf_s390_object_p
3469
3470 #include "elf64-target.h"