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_is_local_label
  52 #define bfd_elf64_bfd_is_local_label bfd_generic_is_local_label
  53 #endif
  54
  55 #ifndef bfd_elf64_get_dynamic_reloc_upper_bound
  56 #define bfd_elf64_get_dynamic_reloc_upper_bound \
  57   _bfd_nodynamic_get_dynamic_reloc_upper_bound
  58 #endif
  59 #ifndef bfd_elf64_canonicalize_dynamic_reloc
  60 #define bfd_elf64_canonicalize_dynamic_reloc \
  61   _bfd_nodynamic_canonicalize_dynamic_reloc
  62 #endif
  63
  64 #ifdef elf_backend_relocate_section
  65 #ifndef bfd_elf64_bfd_link_hash_table_create
  66 #define bfd_elf64_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
  67 #endif
  68 #else /* ! defined (elf_backend_relocate_section) */
  69 /* If no backend relocate_section routine, use the generic linker.  */
  70 #ifndef bfd_elf64_bfd_link_hash_table_create
  71 #define bfd_elf64_bfd_link_hash_table_create \
  72   _bfd_generic_link_hash_table_create
  73 #endif
  74 #ifndef bfd_elf64_bfd_link_add_symbols
  75 #define bfd_elf64_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  76 #endif
  77 #ifndef bfd_elf64_bfd_final_link
  78 #define bfd_elf64_bfd_final_link        _bfd_generic_final_link
  79 #endif
  80 #endif /* ! defined (elf_backend_relocate_section) */
  81
  82 #ifndef elf_info_to_howto_rel
  83 #define elf_info_to_howto_rel 0
  84 #endif
  85
  86 #ifndef ELF_MAXPAGESIZE
  87 #define ELF_MAXPAGESIZE 1
  88 #endif
  89
  90 #ifndef elf_backend_collect
  91 #define elf_backend_collect false
  92 #endif
  93
  94 #ifndef elf_backend_sym_is_global
  95 #define elf_backend_sym_is_global       0
  96 #endif
  97 #ifndef elf_backend_object_p
  98 #define elf_backend_object_p            0
  99 #endif
 100 #ifndef elf_backend_symbol_processing
 101 #define elf_backend_symbol_processing   0
 102 #endif
 103 #ifndef elf_backend_symbol_table_processing
 104 #define elf_backend_symbol_table_processing     0
 105 #endif
 106 #ifndef elf_backend_section_processing
 107 #define elf_backend_section_processing  0
 108 #endif
 109 #ifndef elf_backend_section_from_shdr
 110 #define elf_backend_section_from_shdr   0
 111 #endif
 112 #ifndef elf_backend_fake_sections
 113 #define elf_backend_fake_sections       0
 114 #endif
 115 #ifndef elf_backend_section_from_bfd_section
 116 #define elf_backend_section_from_bfd_section    0
 117 #endif
 118 #ifndef elf_backend_add_symbol_hook
 119 #define elf_backend_add_symbol_hook     0
 120 #endif
 121 #ifndef elf_backend_link_output_symbol_hook
 122 #define elf_backend_link_output_symbol_hook 0
 123 #endif
 124 #ifndef elf_backend_create_dynamic_sections
 125 #define elf_backend_create_dynamic_sections 0
 126 #endif
 127 #ifndef elf_backend_check_relocs
 128 #define elf_backend_check_relocs        0
 129 #endif
 130 #ifndef elf_backend_adjust_dynamic_symbol
 131 #define elf_backend_adjust_dynamic_symbol 0
 132 #endif
 133 #ifndef elf_backend_size_dynamic_sections
 134 #define elf_backend_size_dynamic_sections 0
 135 #endif
 136 #ifndef elf_backend_relocate_section
 137 #define elf_backend_relocate_section    0
 138 #endif
 139 #ifndef elf_backend_finish_dynamic_symbol
 140 #define elf_backend_finish_dynamic_symbol       0
 141 #endif
 142 #ifndef elf_backend_finish_dynamic_sections
 143 #define elf_backend_finish_dynamic_sections     0
 144 #endif
 145 #ifndef elf_backend_begin_write_processing
 146 #define elf_backend_begin_write_processing      0
 147 #endif
 148 #ifndef elf_backend_final_write_processing
 149 #define elf_backend_final_write_processing      0
 150 #endif
 151 #ifndef elf_backend_ecoff_debug_swap
 152 #define elf_backend_ecoff_debug_swap    0
 153 #endif
 154
 155 #ifndef ELF_MACHINE_ALT1
 156 #define ELF_MACHINE_ALT1 0
 157 #endif
 158
 159 #ifndef ELF_MACHINE_ALT2
 160 #define ELF_MACHINE_ALT2 0
 161 #endif
 162
 163 static CONST struct elf_backend_data elf64_bed =
 164 {
 165 #ifdef USE_REL
 166   0,                            /* use_rela_p */
 167 #else
 168   1,                            /* use_rela_p */
 169 #endif
 170   1,                            /* elf_64_p */
 171   ELF_ARCH,                     /* arch */
 172   ELF_MACHINE_CODE,             /* elf_machine_code */
 173   ELF_MAXPAGESIZE,              /* maxpagesize */
 174   elf_backend_collect,
 175   elf_info_to_howto,
 176   elf_info_to_howto_rel,
 177   elf_backend_sym_is_global,
 178   elf_backend_object_p,
 179   elf_backend_symbol_processing,
 180   elf_backend_symbol_table_processing,
 181   elf_backend_section_processing,
 182   elf_backend_section_from_shdr,
 183   elf_backend_fake_sections,
 184   elf_backend_section_from_bfd_section,
 185   elf_backend_add_symbol_hook,
 186   elf_backend_link_output_symbol_hook,
 187   elf_backend_create_dynamic_sections,
 188   elf_backend_check_relocs,
 189   elf_backend_adjust_dynamic_symbol,
 190   elf_backend_size_dynamic_sections,
 191   elf_backend_relocate_section,
 192   elf_backend_finish_dynamic_symbol,
 193   elf_backend_finish_dynamic_sections,
 194   elf_backend_begin_write_processing,
 195   elf_backend_final_write_processing,
 196   elf_backend_ecoff_debug_swap,
 197   ELF_MACHINE_ALT1,
 198   ELF_MACHINE_ALT2
 199 };
 200
 201 #ifdef TARGET_BIG_SYM
 202 const bfd_target TARGET_BIG_SYM =
 203 {
 204   /* name: identify kind of target */
 205   TARGET_BIG_NAME,
 206
 207   /* flavour: general indication about file */
 208   bfd_target_elf_flavour,
 209
 210   /* byteorder_big_p: data is big endian */
 211   true,
 212
 213   /* header_byteorder_big_p: header is also big endian */
 214   true,
 215
 216   /* object_flags: mask of all file flags */
 217   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 218    DYNAMIC | WP_TEXT | D_PAGED),
 219
 220   /* section_flags: mask of all section flags */
 221   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 222    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 223
 224    /* leading_symbol_char: is the first char of a user symbol
 225       predictable, and if so what is it */
 226    0,
 227
 228   /* ar_pad_char: pad character for filenames within an archive header
 229      FIXME:  this really has nothing to do with ELF, this is a characteristic
 230      of the archiver and/or os and should be independently tunable */
 231   '/',
 232
 233   /* ar_max_namelen: maximum number of characters in an archive header
 234      FIXME:  this really has nothing to do with ELF, this is a characteristic
 235      of the archiver and should be independently tunable.  This value is
 236      a WAG (wild a** guess) */
 237   14,
 238
 239   /* align_power_min: minimum alignment restriction for any section
 240      FIXME:  this value may be target machine dependent */
 241   3,
 242
 243   /* Routines to byte-swap various sized integers from the data sections */
 244   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 245     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 246     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 247
 248   /* Routines to byte-swap various sized integers from the file headers */
 249   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 250     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 251     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 252
 253   /* bfd_check_format: check the format of a file being read */
 254   { _bfd_dummy_target,          /* unknown format */
 255     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 256     bfd_generic_archive_p,      /* an archive */
 257     bfd_elf64_core_file_p       /* a core file */
 258   },
 259
 260   /* bfd_set_format: set the format of a file being written */
 261   { bfd_false,
 262     bfd_elf_mkobject,
 263     _bfd_generic_mkarchive,
 264     bfd_false
 265   },
 266
 267   /* bfd_write_contents: write cached information into a file being written */
 268   { bfd_false,
 269     bfd_elf64_write_object_contents,
 270     _bfd_write_archive_contents,
 271     bfd_false
 272   },
 273
 274       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 275       BFD_JUMP_TABLE_COPY (bfd_elf64),
 276       BFD_JUMP_TABLE_CORE (bfd_elf64),
 277       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 278       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 279       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 280       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 281       BFD_JUMP_TABLE_LINK (bfd_elf64),
 282       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 283
 284   /* backend_data: */
 285   (PTR) &elf64_bed,
 286 };
 287 #endif
 288
 289 #ifdef TARGET_LITTLE_SYM
 290 const bfd_target TARGET_LITTLE_SYM =
 291 {
 292   /* name: identify kind of target */
 293   TARGET_LITTLE_NAME,
 294
 295   /* flavour: general indication about file */
 296   bfd_target_elf_flavour,
 297
 298   /* byteorder_big_p: data is big endian */
 299   false,                /* Nope -- this one's little endian */
 300
 301   /* header_byteorder_big_p: header is also big endian */
 302   false,                /* Nope -- this one's little endian */
 303
 304   /* object_flags: mask of all file flags */
 305   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 306    DYNAMIC | WP_TEXT | D_PAGED),
 307
 308   /* section_flags: mask of all section flags */
 309   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 310    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 311
 312    /* leading_symbol_char: is the first char of a user symbol
 313       predictable, and if so what is it */
 314    0,
 315
 316   /* ar_pad_char: pad character for filenames within an archive header
 317      FIXME:  this really has nothing to do with ELF, this is a characteristic
 318      of the archiver and/or os and should be independently tunable */
 319   '/',
 320
 321   /* ar_max_namelen: maximum number of characters in an archive header
 322      FIXME:  this really has nothing to do with ELF, this is a characteristic
 323      of the archiver and should be independently tunable.  This value is
 324      a WAG (wild a** guess) */
 325   14,
 326
 327   /* align_power_min: minimum alignment restriction for any section
 328      FIXME:  this value may be target machine dependent */
 329   3,
 330
 331   /* Routines to byte-swap various sized integers from the data sections */
 332   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 333     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 334     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 335
 336   /* Routines to byte-swap various sized integers from the file headers */
 337   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 338     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 339     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 340
 341   /* bfd_check_format: check the format of a file being read */
 342   { _bfd_dummy_target,          /* unknown format */
 343     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 344     bfd_generic_archive_p,      /* an archive */
 345     bfd_elf64_core_file_p       /* a core file */
 346   },
 347
 348   /* bfd_set_format: set the format of a file being written */
 349   { bfd_false,
 350     bfd_elf_mkobject,
 351     _bfd_generic_mkarchive,
 352     bfd_false
 353   },
 354
 355   /* bfd_write_contents: write cached information into a file being written */
 356   { bfd_false,
 357     bfd_elf64_write_object_contents,
 358     _bfd_write_archive_contents,
 359     bfd_false
 360   },
 361
 362       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 363       BFD_JUMP_TABLE_COPY (bfd_elf64),
 364       BFD_JUMP_TABLE_CORE (bfd_elf64),
 365       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 366       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 367       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 368       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 369       BFD_JUMP_TABLE_LINK (bfd_elf64),
 370       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 371
 372   /* backend_data: */
 373   (PTR) &elf64_bed,
 374 };
 375 #endif