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_relocate_section
 122 #define elf_backend_relocate_section    0
 123 #endif
 124 #ifndef elf_backend_begin_write_processing
 125 #define elf_backend_begin_write_processing      0
 126 #endif
 127 #ifndef elf_backend_final_write_processing
 128 #define elf_backend_final_write_processing      0
 129 #endif
 130 #ifndef elf_backend_ecoff_debug_swap
 131 #define elf_backend_ecoff_debug_swap    0
 132 #endif
 133
 134 static CONST struct elf_backend_data elf64_bed =
 135 {
 136 #ifdef USE_REL
 137   0,                            /* use_rela_p */
 138 #else
 139   1,                            /* use_rela_p */
 140 #endif
 141   1,                            /* elf_64_p */
 142   ELF_ARCH,                     /* arch */
 143   ELF_MACHINE_CODE,             /* elf_machine_code */
 144   ELF_MAXPAGESIZE,              /* maxpagesize */
 145   elf_backend_collect,
 146   elf_info_to_howto,
 147   elf_info_to_howto_rel,
 148   elf_backend_sym_is_global,
 149   elf_backend_object_p,
 150   elf_backend_symbol_processing,
 151   elf_backend_symbol_table_processing,
 152   elf_backend_section_processing,
 153   elf_backend_section_from_shdr,
 154   elf_backend_fake_sections,
 155   elf_backend_section_from_bfd_section,
 156   elf_backend_add_symbol_hook,
 157   elf_backend_relocate_section,
 158   elf_backend_begin_write_processing,
 159   elf_backend_final_write_processing,
 160   elf_backend_ecoff_debug_swap
 161 };
 162
 163 #ifdef TARGET_BIG_SYM
 164 bfd_target TARGET_BIG_SYM =
 165 {
 166   /* name: identify kind of target */
 167   TARGET_BIG_NAME,
 168
 169   /* flavour: general indication about file */
 170   bfd_target_elf_flavour,
 171
 172   /* byteorder_big_p: data is big endian */
 173   true,
 174
 175   /* header_byteorder_big_p: header is also big endian */
 176   true,
 177
 178   /* object_flags: mask of all file flags */
 179   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 180    DYNAMIC | WP_TEXT),
 181
 182   /* section_flags: mask of all section flags */
 183   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 184    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 185
 186    /* leading_symbol_char: is the first char of a user symbol
 187       predictable, and if so what is it */
 188    0,
 189
 190   /* ar_pad_char: pad character for filenames within an archive header
 191      FIXME:  this really has nothing to do with ELF, this is a characteristic
 192      of the archiver and/or os and should be independently tunable */
 193   '/',
 194
 195   /* ar_max_namelen: maximum number of characters in an archive header
 196      FIXME:  this really has nothing to do with ELF, this is a characteristic
 197      of the archiver and should be independently tunable.  This value is
 198      a WAG (wild a** guess) */
 199   15,
 200
 201   /* align_power_min: minimum alignment restriction for any section
 202      FIXME:  this value may be target machine dependent */
 203   3,
 204
 205   /* Routines to byte-swap various sized integers from the data sections */
 206   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 207     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 208     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 209
 210   /* Routines to byte-swap various sized integers from the file headers */
 211   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 212     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 213     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 214
 215   /* bfd_check_format: check the format of a file being read */
 216   { _bfd_dummy_target,          /* unknown format */
 217     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 218     bfd_generic_archive_p,      /* an archive */
 219     bfd_elf64_core_file_p       /* a core file */
 220   },
 221
 222   /* bfd_set_format: set the format of a file being written */
 223   { bfd_false,
 224     bfd_elf_mkobject,
 225     _bfd_generic_mkarchive,
 226     bfd_false
 227   },
 228
 229   /* bfd_write_contents: write cached information into a file being written */
 230   { bfd_false,
 231     bfd_elf64_write_object_contents,
 232     _bfd_write_archive_contents,
 233     bfd_false
 234   },
 235
 236       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 237       BFD_JUMP_TABLE_COPY (bfd_elf64),
 238       BFD_JUMP_TABLE_CORE (bfd_elf64),
 239       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 240       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 241       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 242       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 243       BFD_JUMP_TABLE_LINK (bfd_elf64),
 244       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 245
 246   /* backend_data: */
 247   (PTR) &elf64_bed,
 248 };
 249 #endif
 250
 251 #ifdef TARGET_LITTLE_SYM
 252 bfd_target TARGET_LITTLE_SYM =
 253 {
 254   /* name: identify kind of target */
 255   TARGET_LITTLE_NAME,
 256
 257   /* flavour: general indication about file */
 258   bfd_target_elf_flavour,
 259
 260   /* byteorder_big_p: data is big endian */
 261   false,                /* Nope -- this one's little endian */
 262
 263   /* header_byteorder_big_p: header is also big endian */
 264   false,                /* Nope -- this one's little endian */
 265
 266   /* object_flags: mask of all file flags */
 267   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 268    DYNAMIC | WP_TEXT),
 269
 270   /* section_flags: mask of all section flags */
 271   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 272    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 273
 274    /* leading_symbol_char: is the first char of a user symbol
 275       predictable, and if so what is it */
 276    0,
 277
 278   /* ar_pad_char: pad character for filenames within an archive header
 279      FIXME:  this really has nothing to do with ELF, this is a characteristic
 280      of the archiver and/or os and should be independently tunable */
 281   '/',
 282
 283   /* ar_max_namelen: maximum number of characters in an archive header
 284      FIXME:  this really has nothing to do with ELF, this is a characteristic
 285      of the archiver and should be independently tunable.  This value is
 286      a WAG (wild a** guess) */
 287   15,
 288
 289   /* align_power_min: minimum alignment restriction for any section
 290      FIXME:  this value may be target machine dependent */
 291   3,
 292
 293   /* Routines to byte-swap various sized integers from the data sections */
 294   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 295     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 296     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 297
 298   /* Routines to byte-swap various sized integers from the file headers */
 299   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 300     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 301     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 302
 303   /* bfd_check_format: check the format of a file being read */
 304   { _bfd_dummy_target,          /* unknown format */
 305     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 306     bfd_generic_archive_p,      /* an archive */
 307     bfd_elf64_core_file_p       /* a core file */
 308   },
 309
 310   /* bfd_set_format: set the format of a file being written */
 311   { bfd_false,
 312     bfd_elf_mkobject,
 313     _bfd_generic_mkarchive,
 314     bfd_false
 315   },
 316
 317   /* bfd_write_contents: write cached information into a file being written */
 318   { bfd_false,
 319     bfd_elf64_write_object_contents,
 320     _bfd_write_archive_contents,
 321     bfd_false
 322   },
 323
 324       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 325       BFD_JUMP_TABLE_COPY (bfd_elf64),
 326       BFD_JUMP_TABLE_CORE (bfd_elf64),
 327       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 328       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 329       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 330       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 331       BFD_JUMP_TABLE_LINK (bfd_elf64),
 332       BFD_JUMP_TABLE_DYNAMIC (bfd_elf64),
 333
 334   /* backend_data: */
 335   (PTR) &elf64_bed,
 336 };
 337 #endif