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 static CONST struct elf_backend_data elf64_bed =
 156 {
 157 #ifdef USE_REL
 158   0,                            /* use_rela_p */
 159 #else
 160   1,                            /* use_rela_p */
 161 #endif
 162   1,                            /* elf_64_p */
 163   ELF_ARCH,                     /* arch */
 164   ELF_MACHINE_CODE,             /* elf_machine_code */
 165   ELF_MAXPAGESIZE,              /* maxpagesize */
 166   elf_backend_collect,
 167   elf_info_to_howto,
 168   elf_info_to_howto_rel,
 169   elf_backend_sym_is_global,
 170   elf_backend_object_p,
 171   elf_backend_symbol_processing,
 172   elf_backend_symbol_table_processing,
 173   elf_backend_section_processing,
 174   elf_backend_section_from_shdr,
 175   elf_backend_fake_sections,
 176   elf_backend_section_from_bfd_section,
 177   elf_backend_add_symbol_hook,
 178   elf_backend_link_output_symbol_hook,
 179   elf_backend_create_dynamic_sections,
 180   elf_backend_check_relocs,
 181   elf_backend_adjust_dynamic_symbol,
 182   elf_backend_size_dynamic_sections,
 183   elf_backend_relocate_section,
 184   elf_backend_finish_dynamic_symbol,
 185   elf_backend_finish_dynamic_sections,
 186   elf_backend_begin_write_processing,
 187   elf_backend_final_write_processing,
 188   elf_backend_ecoff_debug_swap
 189 };
 190
 191 #ifdef TARGET_BIG_SYM
 192 const bfd_target TARGET_BIG_SYM =
 193 {
 194   /* name: identify kind of target */
 195   TARGET_BIG_NAME,
 196
 197   /* flavour: general indication about file */
 198   bfd_target_elf_flavour,
 199
 200   /* byteorder_big_p: data is big endian */
 201   true,
 202
 203   /* header_byteorder_big_p: header is also big endian */
 204   true,
 205
 206   /* object_flags: mask of all file flags */
 207   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 208    DYNAMIC | WP_TEXT | D_PAGED),
 209
 210   /* section_flags: mask of all section flags */
 211   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 212    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 213
 214    /* leading_symbol_char: is the first char of a user symbol
 215       predictable, and if so what is it */
 216    0,
 217
 218   /* ar_pad_char: pad character for filenames within an archive header
 219      FIXME:  this really has nothing to do with ELF, this is a characteristic
 220      of the archiver and/or os and should be independently tunable */
 221   '/',
 222
 223   /* ar_max_namelen: maximum number of characters in an archive header
 224      FIXME:  this really has nothing to do with ELF, this is a characteristic
 225      of the archiver and should be independently tunable.  This value is
 226      a WAG (wild a** guess) */
 227   14,
 228
 229   /* align_power_min: minimum alignment restriction for any section
 230      FIXME:  this value may be target machine dependent */
 231   3,
 232
 233   /* Routines to byte-swap various sized integers from the data sections */
 234   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 235     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 236     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 237
 238   /* Routines to byte-swap various sized integers from the file headers */
 239   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 240     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 241     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 242
 243   /* bfd_check_format: check the format of a file being read */
 244   { _bfd_dummy_target,          /* unknown format */
 245     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 246     bfd_generic_archive_p,      /* an archive */
 247     bfd_elf64_core_file_p       /* a core file */
 248   },
 249
 250   /* bfd_set_format: set the format of a file being written */
 251   { bfd_false,
 252     bfd_elf_mkobject,
 253     _bfd_generic_mkarchive,
 254     bfd_false
 255   },
 256
 257   /* bfd_write_contents: write cached information into a file being written */
 258   { bfd_false,
 259     bfd_elf64_write_object_contents,
 260     _bfd_write_archive_contents,
 261     bfd_false
 262   },
 263
 264       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 265       BFD_JUMP_TABLE_COPY (bfd_elf64),
 266       BFD_JUMP_TABLE_CORE (bfd_elf64),
 267       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 268       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 269       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 270       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 271       BFD_JUMP_TABLE_LINK (bfd_elf64),
 272       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 273
 274   /* backend_data: */
 275   (PTR) &elf64_bed,
 276 };
 277 #endif
 278
 279 #ifdef TARGET_LITTLE_SYM
 280 const bfd_target TARGET_LITTLE_SYM =
 281 {
 282   /* name: identify kind of target */
 283   TARGET_LITTLE_NAME,
 284
 285   /* flavour: general indication about file */
 286   bfd_target_elf_flavour,
 287
 288   /* byteorder_big_p: data is big endian */
 289   false,                /* Nope -- this one's little endian */
 290
 291   /* header_byteorder_big_p: header is also big endian */
 292   false,                /* Nope -- this one's little endian */
 293
 294   /* object_flags: mask of all file flags */
 295   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 296    DYNAMIC | WP_TEXT | D_PAGED),
 297
 298   /* section_flags: mask of all section flags */
 299   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 300    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 301
 302    /* leading_symbol_char: is the first char of a user symbol
 303       predictable, and if so what is it */
 304    0,
 305
 306   /* ar_pad_char: pad character for filenames within an archive header
 307      FIXME:  this really has nothing to do with ELF, this is a characteristic
 308      of the archiver and/or os and should be independently tunable */
 309   '/',
 310
 311   /* ar_max_namelen: maximum number of characters in an archive header
 312      FIXME:  this really has nothing to do with ELF, this is a characteristic
 313      of the archiver and should be independently tunable.  This value is
 314      a WAG (wild a** guess) */
 315   14,
 316
 317   /* align_power_min: minimum alignment restriction for any section
 318      FIXME:  this value may be target machine dependent */
 319   3,
 320
 321   /* Routines to byte-swap various sized integers from the data sections */
 322   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 323     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 324     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 325
 326   /* Routines to byte-swap various sized integers from the file headers */
 327   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 328     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 329     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 330
 331   /* bfd_check_format: check the format of a file being read */
 332   { _bfd_dummy_target,          /* unknown format */
 333     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 334     bfd_generic_archive_p,      /* an archive */
 335     bfd_elf64_core_file_p       /* a core file */
 336   },
 337
 338   /* bfd_set_format: set the format of a file being written */
 339   { bfd_false,
 340     bfd_elf_mkobject,
 341     _bfd_generic_mkarchive,
 342     bfd_false
 343   },
 344
 345   /* bfd_write_contents: write cached information into a file being written */
 346   { bfd_false,
 347     bfd_elf64_write_object_contents,
 348     _bfd_write_archive_contents,
 349     bfd_false
 350   },
 351
 352       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 353       BFD_JUMP_TABLE_COPY (bfd_elf64),
 354       BFD_JUMP_TABLE_CORE (bfd_elf64),
 355       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 356       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 357       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 358       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 359       BFD_JUMP_TABLE_LINK (bfd_elf64),
 360       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 361
 362   /* backend_data: */
 363   (PTR) &elf64_bed,
 364 };
 365 #endif