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_create_dynamic_sections
 122 #define elf_backend_create_dynamic_sections 0
 123 #endif
 124 #ifndef elf_backend_adjust_dynamic_symbol
 125 #define elf_backend_adjust_dynamic_symbol 0
 126 #endif
 127 #ifndef elf_backend_size_dynamic_sections
 128 #define elf_backend_size_dynamic_sections 0
 129 #endif
 130 #ifndef elf_backend_relocate_section
 131 #define elf_backend_relocate_section    0
 132 #endif
 133 #ifndef elf_backend_finish_dynamic_symbol
 134 #define elf_backend_finish_dynamic_symbol       0
 135 #endif
 136 #ifndef elf_backend_finish_dynamic_sections
 137 #define elf_backend_finish_dynamic_sections     0
 138 #endif
 139 #ifndef elf_backend_begin_write_processing
 140 #define elf_backend_begin_write_processing      0
 141 #endif
 142 #ifndef elf_backend_final_write_processing
 143 #define elf_backend_final_write_processing      0
 144 #endif
 145 #ifndef elf_backend_ecoff_debug_swap
 146 #define elf_backend_ecoff_debug_swap    0
 147 #endif
 148
 149 static CONST struct elf_backend_data elf64_bed =
 150 {
 151 #ifdef USE_REL
 152   0,                            /* use_rela_p */
 153 #else
 154   1,                            /* use_rela_p */
 155 #endif
 156   1,                            /* elf_64_p */
 157   ELF_ARCH,                     /* arch */
 158   ELF_MACHINE_CODE,             /* elf_machine_code */
 159   ELF_MAXPAGESIZE,              /* maxpagesize */
 160   elf_backend_collect,
 161   elf_info_to_howto,
 162   elf_info_to_howto_rel,
 163   elf_backend_sym_is_global,
 164   elf_backend_object_p,
 165   elf_backend_symbol_processing,
 166   elf_backend_symbol_table_processing,
 167   elf_backend_section_processing,
 168   elf_backend_section_from_shdr,
 169   elf_backend_fake_sections,
 170   elf_backend_section_from_bfd_section,
 171   elf_backend_add_symbol_hook,
 172   elf_backend_create_dynamic_sections,
 173   elf_backend_adjust_dynamic_symbol,
 174   elf_backend_size_dynamic_sections,
 175   elf_backend_relocate_section,
 176   elf_backend_finish_dynamic_symbol,
 177   elf_backend_finish_dynamic_sections,
 178   elf_backend_begin_write_processing,
 179   elf_backend_final_write_processing,
 180   elf_backend_ecoff_debug_swap
 181 };
 182
 183 #ifdef TARGET_BIG_SYM
 184 const bfd_target TARGET_BIG_SYM =
 185 {
 186   /* name: identify kind of target */
 187   TARGET_BIG_NAME,
 188
 189   /* flavour: general indication about file */
 190   bfd_target_elf_flavour,
 191
 192   /* byteorder_big_p: data is big endian */
 193   true,
 194
 195   /* header_byteorder_big_p: header is also big endian */
 196   true,
 197
 198   /* object_flags: mask of all file flags */
 199   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 200    DYNAMIC | WP_TEXT | D_PAGED),
 201
 202   /* section_flags: mask of all section flags */
 203   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 204    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 205
 206    /* leading_symbol_char: is the first char of a user symbol
 207       predictable, and if so what is it */
 208    0,
 209
 210   /* ar_pad_char: pad character for filenames within an archive header
 211      FIXME:  this really has nothing to do with ELF, this is a characteristic
 212      of the archiver and/or os and should be independently tunable */
 213   '/',
 214
 215   /* ar_max_namelen: maximum number of characters in an archive header
 216      FIXME:  this really has nothing to do with ELF, this is a characteristic
 217      of the archiver and should be independently tunable.  This value is
 218      a WAG (wild a** guess) */
 219   14,
 220
 221   /* align_power_min: minimum alignment restriction for any section
 222      FIXME:  this value may be target machine dependent */
 223   3,
 224
 225   /* Routines to byte-swap various sized integers from the data sections */
 226   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 227     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 228     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 229
 230   /* Routines to byte-swap various sized integers from the file headers */
 231   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 232     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 233     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 234
 235   /* bfd_check_format: check the format of a file being read */
 236   { _bfd_dummy_target,          /* unknown format */
 237     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 238     bfd_generic_archive_p,      /* an archive */
 239     bfd_elf64_core_file_p       /* a core file */
 240   },
 241
 242   /* bfd_set_format: set the format of a file being written */
 243   { bfd_false,
 244     bfd_elf_mkobject,
 245     _bfd_generic_mkarchive,
 246     bfd_false
 247   },
 248
 249   /* bfd_write_contents: write cached information into a file being written */
 250   { bfd_false,
 251     bfd_elf64_write_object_contents,
 252     _bfd_write_archive_contents,
 253     bfd_false
 254   },
 255
 256       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 257       BFD_JUMP_TABLE_COPY (bfd_elf64),
 258       BFD_JUMP_TABLE_CORE (bfd_elf64),
 259       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 260       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 261       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 262       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 263       BFD_JUMP_TABLE_LINK (bfd_elf64),
 264       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 265
 266   /* backend_data: */
 267   (PTR) &elf64_bed,
 268 };
 269 #endif
 270
 271 #ifdef TARGET_LITTLE_SYM
 272 const bfd_target TARGET_LITTLE_SYM =
 273 {
 274   /* name: identify kind of target */
 275   TARGET_LITTLE_NAME,
 276
 277   /* flavour: general indication about file */
 278   bfd_target_elf_flavour,
 279
 280   /* byteorder_big_p: data is big endian */
 281   false,                /* Nope -- this one's little endian */
 282
 283   /* header_byteorder_big_p: header is also big endian */
 284   false,                /* Nope -- this one's little endian */
 285
 286   /* object_flags: mask of all file flags */
 287   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 288    DYNAMIC | WP_TEXT | D_PAGED),
 289
 290   /* section_flags: mask of all section flags */
 291   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 292    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 293
 294    /* leading_symbol_char: is the first char of a user symbol
 295       predictable, and if so what is it */
 296    0,
 297
 298   /* ar_pad_char: pad character for filenames within an archive header
 299      FIXME:  this really has nothing to do with ELF, this is a characteristic
 300      of the archiver and/or os and should be independently tunable */
 301   '/',
 302
 303   /* ar_max_namelen: maximum number of characters in an archive header
 304      FIXME:  this really has nothing to do with ELF, this is a characteristic
 305      of the archiver and should be independently tunable.  This value is
 306      a WAG (wild a** guess) */
 307   14,
 308
 309   /* align_power_min: minimum alignment restriction for any section
 310      FIXME:  this value may be target machine dependent */
 311   3,
 312
 313   /* Routines to byte-swap various sized integers from the data sections */
 314   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 315     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 316     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 317
 318   /* Routines to byte-swap various sized integers from the file headers */
 319   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 320     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 321     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 322
 323   /* bfd_check_format: check the format of a file being read */
 324   { _bfd_dummy_target,          /* unknown format */
 325     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 326     bfd_generic_archive_p,      /* an archive */
 327     bfd_elf64_core_file_p       /* a core file */
 328   },
 329
 330   /* bfd_set_format: set the format of a file being written */
 331   { bfd_false,
 332     bfd_elf_mkobject,
 333     _bfd_generic_mkarchive,
 334     bfd_false
 335   },
 336
 337   /* bfd_write_contents: write cached information into a file being written */
 338   { bfd_false,
 339     bfd_elf64_write_object_contents,
 340     _bfd_write_archive_contents,
 341     bfd_false
 342   },
 343
 344       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 345       BFD_JUMP_TABLE_COPY (bfd_elf64),
 346       BFD_JUMP_TABLE_CORE (bfd_elf64),
 347       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 348       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 349       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 350       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 351       BFD_JUMP_TABLE_LINK (bfd_elf64),
 352       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 353
 354   /* backend_data: */
 355   (PTR) &elf64_bed,
 356 };
 357 #endif