bfd/elf64-target.h

   1 /* Target definitions for 64-bit ELF
   2    Copyright 1993, 1994 Free Software Foundation, Inc.
   3
   4 This file is part of BFD, the Binary File Descriptor library.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* This structure contains everything that BFD knows about a target.
  21    It includes things like its byte order, name, what routines to call
  22    to do various operations, etc.  Every BFD points to a target structure
  23    with its "xvec" member.
  24
  25    There are two such structures here:  one for big-endian machines and
  26    one for little-endian machines.   */
  27
  28 #define bfd_elf64_close_and_cleanup _bfd_generic_close_and_cleanup
  29 #define bfd_elf64_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
  30 #ifndef bfd_elf64_get_section_contents
  31 #define bfd_elf64_get_section_contents _bfd_generic_get_section_contents
  32 #endif
  33
  34 #define bfd_elf64_bfd_debug_info_start  bfd_void
  35 #define bfd_elf64_bfd_debug_info_end    bfd_void
  36 #define bfd_elf64_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  37 #define bfd_elf64_bfd_get_relocated_section_contents \
  38  bfd_generic_get_relocated_section_contents
  39 #define bfd_elf64_bfd_relax_section bfd_generic_relax_section
  40 #define bfd_elf64_bfd_make_debug_symbol \
  41   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  42
  43 #ifndef bfd_elf64_bfd_copy_private_section_data
  44 #define bfd_elf64_bfd_copy_private_section_data \
  45   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  46 #endif
  47 #ifndef bfd_elf64_bfd_copy_private_bfd_data
  48 #define bfd_elf64_bfd_copy_private_bfd_data \
  49   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  50 #endif
  51 #ifndef bfd_elf64_bfd_merge_private_bfd_data
  52 #define bfd_elf64_bfd_merge_private_bfd_data \
  53   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  54 #endif
  55 #ifndef bfd_elf64_bfd_set_private_flags
  56 #define bfd_elf64_bfd_set_private_flags \
  57   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
  58 #endif
  59 #ifndef bfd_elf64_bfd_is_local_label
  60 #define bfd_elf64_bfd_is_local_label bfd_generic_is_local_label
  61 #endif
  62
  63 #ifndef bfd_elf64_get_dynamic_reloc_upper_bound
  64 #define bfd_elf64_get_dynamic_reloc_upper_bound \
  65   _bfd_nodynamic_get_dynamic_reloc_upper_bound
  66 #endif
  67 #ifndef bfd_elf64_canonicalize_dynamic_reloc
  68 #define bfd_elf64_canonicalize_dynamic_reloc \
  69   _bfd_nodynamic_canonicalize_dynamic_reloc
  70 #endif
  71
  72 #ifdef elf_backend_relocate_section
  73 #ifndef bfd_elf64_bfd_link_hash_table_create
  74 #define bfd_elf64_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
  75 #endif
  76 #else /* ! defined (elf_backend_relocate_section) */
  77 /* If no backend relocate_section routine, use the generic linker.  */
  78 #ifndef bfd_elf64_bfd_link_hash_table_create
  79 #define bfd_elf64_bfd_link_hash_table_create \
  80   _bfd_generic_link_hash_table_create
  81 #endif
  82 #ifndef bfd_elf64_bfd_link_add_symbols
  83 #define bfd_elf64_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  84 #endif
  85 #ifndef bfd_elf64_bfd_final_link
  86 #define bfd_elf64_bfd_final_link        _bfd_generic_final_link
  87 #endif
  88 #endif /* ! defined (elf_backend_relocate_section) */
  89
  90 #ifndef elf_info_to_howto_rel
  91 #define elf_info_to_howto_rel 0
  92 #endif
  93
  94 #ifndef ELF_MAXPAGESIZE
  95 #define ELF_MAXPAGESIZE 1
  96 #endif
  97
  98 #ifndef elf_backend_collect
  99 #define elf_backend_collect false
 100 #endif
 101
 102 #ifndef elf_backend_sym_is_global
 103 #define elf_backend_sym_is_global       0
 104 #endif
 105 #ifndef elf_backend_object_p
 106 #define elf_backend_object_p            0
 107 #endif
 108 #ifndef elf_backend_symbol_processing
 109 #define elf_backend_symbol_processing   0
 110 #endif
 111 #ifndef elf_backend_symbol_table_processing
 112 #define elf_backend_symbol_table_processing     0
 113 #endif
 114 #ifndef elf_backend_section_processing
 115 #define elf_backend_section_processing  0
 116 #endif
 117 #ifndef elf_backend_section_from_shdr
 118 #define elf_backend_section_from_shdr   0
 119 #endif
 120 #ifndef elf_backend_fake_sections
 121 #define elf_backend_fake_sections       0
 122 #endif
 123 #ifndef elf_backend_section_from_bfd_section
 124 #define elf_backend_section_from_bfd_section    0
 125 #endif
 126 #ifndef elf_backend_add_symbol_hook
 127 #define elf_backend_add_symbol_hook     0
 128 #endif
 129 #ifndef elf_backend_link_output_symbol_hook
 130 #define elf_backend_link_output_symbol_hook 0
 131 #endif
 132 #ifndef elf_backend_create_dynamic_sections
 133 #define elf_backend_create_dynamic_sections 0
 134 #endif
 135 #ifndef elf_backend_check_relocs
 136 #define elf_backend_check_relocs        0
 137 #endif
 138 #ifndef elf_backend_adjust_dynamic_symbol
 139 #define elf_backend_adjust_dynamic_symbol 0
 140 #endif
 141 #ifndef elf_backend_size_dynamic_sections
 142 #define elf_backend_size_dynamic_sections 0
 143 #endif
 144 #ifndef elf_backend_relocate_section
 145 #define elf_backend_relocate_section    0
 146 #endif
 147 #ifndef elf_backend_finish_dynamic_symbol
 148 #define elf_backend_finish_dynamic_symbol       0
 149 #endif
 150 #ifndef elf_backend_finish_dynamic_sections
 151 #define elf_backend_finish_dynamic_sections     0
 152 #endif
 153 #ifndef elf_backend_begin_write_processing
 154 #define elf_backend_begin_write_processing      0
 155 #endif
 156 #ifndef elf_backend_final_write_processing
 157 #define elf_backend_final_write_processing      0
 158 #endif
 159 #ifndef elf_backend_ecoff_debug_swap
 160 #define elf_backend_ecoff_debug_swap    0
 161 #endif
 162
 163 #ifndef ELF_MACHINE_ALT1
 164 #define ELF_MACHINE_ALT1 0
 165 #endif
 166
 167 #ifndef ELF_MACHINE_ALT2
 168 #define ELF_MACHINE_ALT2 0
 169 #endif
 170
 171 static CONST struct elf_backend_data elf64_bed =
 172 {
 173 #ifdef USE_REL
 174   0,                            /* use_rela_p */
 175 #else
 176   1,                            /* use_rela_p */
 177 #endif
 178   1,                            /* elf_64_p */
 179   ELF_ARCH,                     /* arch */
 180   ELF_MACHINE_CODE,             /* elf_machine_code */
 181   ELF_MAXPAGESIZE,              /* maxpagesize */
 182   elf_backend_collect,
 183   elf_info_to_howto,
 184   elf_info_to_howto_rel,
 185   elf_backend_sym_is_global,
 186   elf_backend_object_p,
 187   elf_backend_symbol_processing,
 188   elf_backend_symbol_table_processing,
 189   elf_backend_section_processing,
 190   elf_backend_section_from_shdr,
 191   elf_backend_fake_sections,
 192   elf_backend_section_from_bfd_section,
 193   elf_backend_add_symbol_hook,
 194   elf_backend_link_output_symbol_hook,
 195   elf_backend_create_dynamic_sections,
 196   elf_backend_check_relocs,
 197   elf_backend_adjust_dynamic_symbol,
 198   elf_backend_size_dynamic_sections,
 199   elf_backend_relocate_section,
 200   elf_backend_finish_dynamic_symbol,
 201   elf_backend_finish_dynamic_sections,
 202   elf_backend_begin_write_processing,
 203   elf_backend_final_write_processing,
 204   elf_backend_ecoff_debug_swap,
 205   ELF_MACHINE_ALT1,
 206   ELF_MACHINE_ALT2
 207 };
 208
 209 #ifdef TARGET_BIG_SYM
 210 const bfd_target TARGET_BIG_SYM =
 211 {
 212   /* name: identify kind of target */
 213   TARGET_BIG_NAME,
 214
 215   /* flavour: general indication about file */
 216   bfd_target_elf_flavour,
 217
 218   /* byteorder_big_p: data is big endian */
 219   true,
 220
 221   /* header_byteorder_big_p: header is also big endian */
 222   true,
 223
 224   /* object_flags: mask of all file flags */
 225   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 226    DYNAMIC | WP_TEXT | D_PAGED),
 227
 228   /* section_flags: mask of all section flags */
 229   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 230    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 231
 232    /* leading_symbol_char: is the first char of a user symbol
 233       predictable, and if so what is it */
 234    0,
 235
 236   /* ar_pad_char: pad character for filenames within an archive header
 237      FIXME:  this really has nothing to do with ELF, this is a characteristic
 238      of the archiver and/or os and should be independently tunable */
 239   '/',
 240
 241   /* ar_max_namelen: maximum number of characters in an archive header
 242      FIXME:  this really has nothing to do with ELF, this is a characteristic
 243      of the archiver and should be independently tunable.  This value is
 244      a WAG (wild a** guess) */
 245   14,
 246
 247   /* align_power_min: minimum alignment restriction for any section
 248      FIXME:  this value may be target machine dependent */
 249   3,
 250
 251   /* Routines to byte-swap various sized integers from the data sections */
 252   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 253     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 254     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 255
 256   /* Routines to byte-swap various sized integers from the file headers */
 257   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 258     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 259     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 260
 261   /* bfd_check_format: check the format of a file being read */
 262   { _bfd_dummy_target,          /* unknown format */
 263     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 264     bfd_generic_archive_p,      /* an archive */
 265     bfd_elf64_core_file_p       /* a core file */
 266   },
 267
 268   /* bfd_set_format: set the format of a file being written */
 269   { bfd_false,
 270     bfd_elf_mkobject,
 271     _bfd_generic_mkarchive,
 272     bfd_false
 273   },
 274
 275   /* bfd_write_contents: write cached information into a file being written */
 276   { bfd_false,
 277     bfd_elf64_write_object_contents,
 278     _bfd_write_archive_contents,
 279     bfd_false
 280   },
 281
 282       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 283       BFD_JUMP_TABLE_COPY (bfd_elf64),
 284       BFD_JUMP_TABLE_CORE (bfd_elf64),
 285       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 286       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 287       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 288       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 289       BFD_JUMP_TABLE_LINK (bfd_elf64),
 290       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 291
 292   /* backend_data: */
 293   (PTR) &elf64_bed,
 294 };
 295 #endif
 296
 297 #ifdef TARGET_LITTLE_SYM
 298 const bfd_target TARGET_LITTLE_SYM =
 299 {
 300   /* name: identify kind of target */
 301   TARGET_LITTLE_NAME,
 302
 303   /* flavour: general indication about file */
 304   bfd_target_elf_flavour,
 305
 306   /* byteorder_big_p: data is big endian */
 307   false,                /* Nope -- this one's little endian */
 308
 309   /* header_byteorder_big_p: header is also big endian */
 310   false,                /* Nope -- this one's little endian */
 311
 312   /* object_flags: mask of all file flags */
 313   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 314    DYNAMIC | WP_TEXT | D_PAGED),
 315
 316   /* section_flags: mask of all section flags */
 317   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 318    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 319
 320    /* leading_symbol_char: is the first char of a user symbol
 321       predictable, and if so what is it */
 322    0,
 323
 324   /* ar_pad_char: pad character for filenames within an archive header
 325      FIXME:  this really has nothing to do with ELF, this is a characteristic
 326      of the archiver and/or os and should be independently tunable */
 327   '/',
 328
 329   /* ar_max_namelen: maximum number of characters in an archive header
 330      FIXME:  this really has nothing to do with ELF, this is a characteristic
 331      of the archiver and should be independently tunable.  This value is
 332      a WAG (wild a** guess) */
 333   14,
 334
 335   /* align_power_min: minimum alignment restriction for any section
 336      FIXME:  this value may be target machine dependent */
 337   3,
 338
 339   /* Routines to byte-swap various sized integers from the data sections */
 340   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 341     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 342     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 343
 344   /* Routines to byte-swap various sized integers from the file headers */
 345   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 346     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 347     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 348
 349   /* bfd_check_format: check the format of a file being read */
 350   { _bfd_dummy_target,          /* unknown format */
 351     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 352     bfd_generic_archive_p,      /* an archive */
 353     bfd_elf64_core_file_p       /* a core file */
 354   },
 355
 356   /* bfd_set_format: set the format of a file being written */
 357   { bfd_false,
 358     bfd_elf_mkobject,
 359     _bfd_generic_mkarchive,
 360     bfd_false
 361   },
 362
 363   /* bfd_write_contents: write cached information into a file being written */
 364   { bfd_false,
 365     bfd_elf64_write_object_contents,
 366     _bfd_write_archive_contents,
 367     bfd_false
 368   },
 369
 370       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 371       BFD_JUMP_TABLE_COPY (bfd_elf64),
 372       BFD_JUMP_TABLE_CORE (bfd_elf64),
 373       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 374       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 375       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 376       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 377       BFD_JUMP_TABLE_LINK (bfd_elf64),
 378       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 379
 380   /* backend_data: */
 381   (PTR) &elf64_bed,
 382 };
 383 #endif