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_symbol_data
  44 #define bfd_elf64_bfd_copy_private_symbol_data \
  45   ((boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
  46 #endif
  47 #ifndef bfd_elf64_bfd_copy_private_section_data
  48 #define bfd_elf64_bfd_copy_private_section_data \
  49   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  50 #endif
  51 #ifndef bfd_elf64_bfd_copy_private_bfd_data
  52 #define bfd_elf64_bfd_copy_private_bfd_data \
  53   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  54 #endif
  55 #ifndef bfd_elf64_bfd_merge_private_bfd_data
  56 #define bfd_elf64_bfd_merge_private_bfd_data \
  57   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  58 #endif
  59 #ifndef bfd_elf64_bfd_set_private_flags
  60 #define bfd_elf64_bfd_set_private_flags \
  61   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
  62 #endif
  63 #ifndef bfd_elf64_bfd_is_local_label
  64 #define bfd_elf64_bfd_is_local_label bfd_generic_is_local_label
  65 #endif
  66
  67 #ifndef bfd_elf64_get_dynamic_reloc_upper_bound
  68 #define bfd_elf64_get_dynamic_reloc_upper_bound \
  69   _bfd_nodynamic_get_dynamic_reloc_upper_bound
  70 #endif
  71 #ifndef bfd_elf64_canonicalize_dynamic_reloc
  72 #define bfd_elf64_canonicalize_dynamic_reloc \
  73   _bfd_nodynamic_canonicalize_dynamic_reloc
  74 #endif
  75
  76 #ifdef elf_backend_relocate_section
  77 #ifndef bfd_elf64_bfd_link_hash_table_create
  78 #define bfd_elf64_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
  79 #endif
  80 #else /* ! defined (elf_backend_relocate_section) */
  81 /* If no backend relocate_section routine, use the generic linker.  */
  82 #ifndef bfd_elf64_bfd_link_hash_table_create
  83 #define bfd_elf64_bfd_link_hash_table_create \
  84   _bfd_generic_link_hash_table_create
  85 #endif
  86 #ifndef bfd_elf64_bfd_link_add_symbols
  87 #define bfd_elf64_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  88 #endif
  89 #ifndef bfd_elf64_bfd_final_link
  90 #define bfd_elf64_bfd_final_link        _bfd_generic_final_link
  91 #endif
  92 #endif /* ! defined (elf_backend_relocate_section) */
  93 #ifndef bfd_elf64_bfd_link_split_section
  94 #define bfd_elf64_bfd_link_split_section _bfd_generic_link_split_section
  95 #endif
  96
  97 #ifndef elf_info_to_howto_rel
  98 #define elf_info_to_howto_rel 0
  99 #endif
 100
 101 #ifndef ELF_MAXPAGESIZE
 102 #define ELF_MAXPAGESIZE 1
 103 #endif
 104
 105 #ifndef elf_backend_collect
 106 #define elf_backend_collect false
 107 #endif
 108
 109 #ifndef elf_backend_sym_is_global
 110 #define elf_backend_sym_is_global       0
 111 #endif
 112 #ifndef elf_backend_object_p
 113 #define elf_backend_object_p            0
 114 #endif
 115 #ifndef elf_backend_symbol_processing
 116 #define elf_backend_symbol_processing   0
 117 #endif
 118 #ifndef elf_backend_symbol_table_processing
 119 #define elf_backend_symbol_table_processing     0
 120 #endif
 121 #ifndef elf_backend_section_processing
 122 #define elf_backend_section_processing  0
 123 #endif
 124 #ifndef elf_backend_section_from_shdr
 125 #define elf_backend_section_from_shdr   0
 126 #endif
 127 #ifndef elf_backend_fake_sections
 128 #define elf_backend_fake_sections       0
 129 #endif
 130 #ifndef elf_backend_section_from_bfd_section
 131 #define elf_backend_section_from_bfd_section    0
 132 #endif
 133 #ifndef elf_backend_add_symbol_hook
 134 #define elf_backend_add_symbol_hook     0
 135 #endif
 136 #ifndef elf_backend_link_output_symbol_hook
 137 #define elf_backend_link_output_symbol_hook 0
 138 #endif
 139 #ifndef elf_backend_create_dynamic_sections
 140 #define elf_backend_create_dynamic_sections 0
 141 #endif
 142 #ifndef elf_backend_check_relocs
 143 #define elf_backend_check_relocs        0
 144 #endif
 145 #ifndef elf_backend_adjust_dynamic_symbol
 146 #define elf_backend_adjust_dynamic_symbol 0
 147 #endif
 148 #ifndef elf_backend_size_dynamic_sections
 149 #define elf_backend_size_dynamic_sections 0
 150 #endif
 151 #ifndef elf_backend_relocate_section
 152 #define elf_backend_relocate_section    0
 153 #endif
 154 #ifndef elf_backend_finish_dynamic_symbol
 155 #define elf_backend_finish_dynamic_symbol       0
 156 #endif
 157 #ifndef elf_backend_finish_dynamic_sections
 158 #define elf_backend_finish_dynamic_sections     0
 159 #endif
 160 #ifndef elf_backend_begin_write_processing
 161 #define elf_backend_begin_write_processing      0
 162 #endif
 163 #ifndef elf_backend_final_write_processing
 164 #define elf_backend_final_write_processing      0
 165 #endif
 166 #ifndef elf_backend_ecoff_debug_swap
 167 #define elf_backend_ecoff_debug_swap    0
 168 #endif
 169
 170 #ifndef ELF_MACHINE_ALT1
 171 #define ELF_MACHINE_ALT1 0
 172 #endif
 173
 174 #ifndef ELF_MACHINE_ALT2
 175 #define ELF_MACHINE_ALT2 0
 176 #endif
 177
 178 static CONST struct elf_backend_data elf64_bed =
 179 {
 180 #ifdef USE_REL
 181   0,                            /* use_rela_p */
 182 #else
 183   1,                            /* use_rela_p */
 184 #endif
 185   1,                            /* elf_64_p */
 186   ELF_ARCH,                     /* arch */
 187   ELF_MACHINE_CODE,             /* elf_machine_code */
 188   ELF_MAXPAGESIZE,              /* maxpagesize */
 189   elf_backend_collect,
 190   elf_info_to_howto,
 191   elf_info_to_howto_rel,
 192   elf_backend_sym_is_global,
 193   elf_backend_object_p,
 194   elf_backend_symbol_processing,
 195   elf_backend_symbol_table_processing,
 196   elf_backend_section_processing,
 197   elf_backend_section_from_shdr,
 198   elf_backend_fake_sections,
 199   elf_backend_section_from_bfd_section,
 200   elf_backend_add_symbol_hook,
 201   elf_backend_link_output_symbol_hook,
 202   elf_backend_create_dynamic_sections,
 203   elf_backend_check_relocs,
 204   elf_backend_adjust_dynamic_symbol,
 205   elf_backend_size_dynamic_sections,
 206   elf_backend_relocate_section,
 207   elf_backend_finish_dynamic_symbol,
 208   elf_backend_finish_dynamic_sections,
 209   elf_backend_begin_write_processing,
 210   elf_backend_final_write_processing,
 211   elf_backend_ecoff_debug_swap,
 212   ELF_MACHINE_ALT1,
 213   ELF_MACHINE_ALT2
 214 };
 215
 216 #ifdef TARGET_BIG_SYM
 217 const bfd_target TARGET_BIG_SYM =
 218 {
 219   /* name: identify kind of target */
 220   TARGET_BIG_NAME,
 221
 222   /* flavour: general indication about file */
 223   bfd_target_elf_flavour,
 224
 225   /* byteorder_big_p: data is big endian */
 226   true,
 227
 228   /* header_byteorder_big_p: header is also big endian */
 229   true,
 230
 231   /* object_flags: mask of all file flags */
 232   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 233    DYNAMIC | WP_TEXT | D_PAGED),
 234
 235   /* section_flags: mask of all section flags */
 236   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 237    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 238
 239    /* leading_symbol_char: is the first char of a user symbol
 240       predictable, and if so what is it */
 241    0,
 242
 243   /* ar_pad_char: pad character for filenames within an archive header
 244      FIXME:  this really has nothing to do with ELF, this is a characteristic
 245      of the archiver and/or os and should be independently tunable */
 246   '/',
 247
 248   /* ar_max_namelen: maximum number of characters in an archive header
 249      FIXME:  this really has nothing to do with ELF, this is a characteristic
 250      of the archiver and should be independently tunable.  This value is
 251      a WAG (wild a** guess) */
 252   14,
 253
 254   /* align_power_min: minimum alignment restriction for any section
 255      FIXME:  this value may be target machine dependent */
 256   3,
 257
 258   /* Routines to byte-swap various sized integers from the data sections */
 259   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 260     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 261     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 262
 263   /* Routines to byte-swap various sized integers from the file headers */
 264   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 265     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 266     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 267
 268   /* bfd_check_format: check the format of a file being read */
 269   { _bfd_dummy_target,          /* unknown format */
 270     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 271     bfd_generic_archive_p,      /* an archive */
 272     bfd_elf64_core_file_p       /* a core file */
 273   },
 274
 275   /* bfd_set_format: set the format of a file being written */
 276   { bfd_false,
 277     bfd_elf_mkobject,
 278     _bfd_generic_mkarchive,
 279     bfd_false
 280   },
 281
 282   /* bfd_write_contents: write cached information into a file being written */
 283   { bfd_false,
 284     bfd_elf64_write_object_contents,
 285     _bfd_write_archive_contents,
 286     bfd_false
 287   },
 288
 289       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 290       BFD_JUMP_TABLE_COPY (bfd_elf64),
 291       BFD_JUMP_TABLE_CORE (bfd_elf64),
 292       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 293       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 294       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 295       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 296       BFD_JUMP_TABLE_LINK (bfd_elf64),
 297       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 298
 299   /* backend_data: */
 300   (PTR) &elf64_bed,
 301 };
 302 #endif
 303
 304 #ifdef TARGET_LITTLE_SYM
 305 const bfd_target TARGET_LITTLE_SYM =
 306 {
 307   /* name: identify kind of target */
 308   TARGET_LITTLE_NAME,
 309
 310   /* flavour: general indication about file */
 311   bfd_target_elf_flavour,
 312
 313   /* byteorder_big_p: data is big endian */
 314   false,                /* Nope -- this one's little endian */
 315
 316   /* header_byteorder_big_p: header is also big endian */
 317   false,                /* Nope -- this one's little endian */
 318
 319   /* object_flags: mask of all file flags */
 320   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 321    DYNAMIC | WP_TEXT | D_PAGED),
 322
 323   /* section_flags: mask of all section flags */
 324   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 325    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 326
 327    /* leading_symbol_char: is the first char of a user symbol
 328       predictable, and if so what is it */
 329    0,
 330
 331   /* ar_pad_char: pad character for filenames within an archive header
 332      FIXME:  this really has nothing to do with ELF, this is a characteristic
 333      of the archiver and/or os and should be independently tunable */
 334   '/',
 335
 336   /* ar_max_namelen: maximum number of characters in an archive header
 337      FIXME:  this really has nothing to do with ELF, this is a characteristic
 338      of the archiver and should be independently tunable.  This value is
 339      a WAG (wild a** guess) */
 340   14,
 341
 342   /* align_power_min: minimum alignment restriction for any section
 343      FIXME:  this value may be target machine dependent */
 344   3,
 345
 346   /* Routines to byte-swap various sized integers from the data sections */
 347   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 348     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 349     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 350
 351   /* Routines to byte-swap various sized integers from the file headers */
 352   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 353     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 354     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 355
 356   /* bfd_check_format: check the format of a file being read */
 357   { _bfd_dummy_target,          /* unknown format */
 358     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 359     bfd_generic_archive_p,      /* an archive */
 360     bfd_elf64_core_file_p       /* a core file */
 361   },
 362
 363   /* bfd_set_format: set the format of a file being written */
 364   { bfd_false,
 365     bfd_elf_mkobject,
 366     _bfd_generic_mkarchive,
 367     bfd_false
 368   },
 369
 370   /* bfd_write_contents: write cached information into a file being written */
 371   { bfd_false,
 372     bfd_elf64_write_object_contents,
 373     _bfd_write_archive_contents,
 374     bfd_false
 375   },
 376
 377       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 378       BFD_JUMP_TABLE_COPY (bfd_elf64),
 379       BFD_JUMP_TABLE_CORE (bfd_elf64),
 380       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 381       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 382       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 383       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 384       BFD_JUMP_TABLE_LINK (bfd_elf64),
 385       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 386
 387   /* backend_data: */
 388   (PTR) &elf64_bed,
 389 };
 390 #endif