bfd/elfxx-target.h

   1 /* Target definitions for NN-bit ELF
   2    Copyright 1993, 1994, 1995 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_elfNN_close_and_cleanup _bfd_generic_close_and_cleanup
  29 #define bfd_elfNN_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
  30 #ifndef bfd_elfNN_get_section_contents
  31 #define bfd_elfNN_get_section_contents _bfd_generic_get_section_contents
  32 #endif
  33
  34 #define bfd_elfNN_canonicalize_dynamic_symtab _bfd_elf_canonicalize_dynamic_symtab
  35 #define bfd_elfNN_canonicalize_reloc    _bfd_elf_canonicalize_reloc
  36 #ifndef bfd_elfNN_find_nearest_line
  37 #define bfd_elfNN_find_nearest_line     _bfd_elf_find_nearest_line
  38 #endif
  39 #define bfd_elfNN_get_dynamic_symtab_upper_bound _bfd_elf_get_dynamic_symtab_upper_bound
  40 #define bfd_elfNN_get_lineno            _bfd_elf_get_lineno
  41 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
  42 #define bfd_elfNN_get_symbol_info       _bfd_elf_get_symbol_info
  43 #define bfd_elfNN_get_symtab            _bfd_elf_get_symtab
  44 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
  45 #if 0 /* done in libelf.h */
  46 #define bfd_elfNN_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
  47 #endif
  48 #define bfd_elfNN_make_empty_symbol     _bfd_elf_make_empty_symbol
  49 #define bfd_elfNN_new_section_hook      _bfd_elf_new_section_hook
  50 #define bfd_elfNN_set_arch_mach         _bfd_elf_set_arch_mach
  51 #ifndef bfd_elfNN_set_section_contents
  52 #define bfd_elfNN_set_section_contents  _bfd_elf_set_section_contents
  53 #endif
  54 #define bfd_elfNN_sizeof_headers        _bfd_elf_sizeof_headers
  55 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
  56
  57 #ifndef elf_backend_want_got_plt
  58 #define elf_backend_want_got_plt 0
  59 #endif
  60 #ifndef elf_backend_plt_readonly
  61 #define elf_backend_plt_readonly 0
  62 #endif
  63 #ifndef elf_backend_want_plt_sym
  64 #define elf_backend_want_plt_sym 0
  65 #endif
  66
  67 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  68 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  69 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  70
  71 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  72 #define bfd_elfNN_bfd_get_relocated_section_contents \
  73  bfd_generic_get_relocated_section_contents
  74 #endif
  75
  76 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  77 #define bfd_elfNN_bfd_make_debug_symbol \
  78   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  79
  80 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  81 #define bfd_elfNN_bfd_copy_private_symbol_data \
  82   ((boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
  83 #endif
  84 #ifndef bfd_elfNN_bfd_copy_private_section_data
  85 #define bfd_elfNN_bfd_copy_private_section_data \
  86   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  87 #endif
  88 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
  89 #define bfd_elfNN_bfd_copy_private_bfd_data \
  90   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  91 #endif
  92 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
  93 #define bfd_elfNN_bfd_merge_private_bfd_data \
  94   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  95 #endif
  96 #ifndef bfd_elfNN_bfd_set_private_flags
  97 #define bfd_elfNN_bfd_set_private_flags \
  98   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
  99 #endif
 100 #ifndef bfd_elfNN_bfd_is_local_label
 101 #define bfd_elfNN_bfd_is_local_label bfd_generic_is_local_label
 102 #endif
 103
 104 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
 105 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
 106   _bfd_nodynamic_get_dynamic_reloc_upper_bound
 107 #endif
 108 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
 109 #define bfd_elfNN_canonicalize_dynamic_reloc \
 110   _bfd_nodynamic_canonicalize_dynamic_reloc
 111 #endif
 112
 113 #ifdef elf_backend_relocate_section
 114 #ifndef bfd_elfNN_bfd_link_hash_table_create
 115 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
 116 #endif
 117 #else /* ! defined (elf_backend_relocate_section) */
 118 /* If no backend relocate_section routine, use the generic linker.  */
 119 #ifndef bfd_elfNN_bfd_link_hash_table_create
 120 #define bfd_elfNN_bfd_link_hash_table_create \
 121   _bfd_generic_link_hash_table_create
 122 #endif
 123 #ifndef bfd_elfNN_bfd_link_add_symbols
 124 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
 125 #endif
 126 #ifndef bfd_elfNN_bfd_final_link
 127 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
 128 #endif
 129 #endif /* ! defined (elf_backend_relocate_section) */
 130 #ifndef bfd_elfNN_bfd_link_split_section
 131 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
 132 #endif
 133
 134 #ifndef elf_info_to_howto_rel
 135 #define elf_info_to_howto_rel 0
 136 #endif
 137
 138 #ifndef ELF_MAXPAGESIZE
 139 #define ELF_MAXPAGESIZE 1
 140 #endif
 141
 142 #ifndef elf_backend_collect
 143 #define elf_backend_collect false
 144 #endif
 145
 146 #ifndef elf_backend_sym_is_global
 147 #define elf_backend_sym_is_global       0
 148 #endif
 149 #ifndef elf_backend_object_p
 150 #define elf_backend_object_p            0
 151 #endif
 152 #ifndef elf_backend_symbol_processing
 153 #define elf_backend_symbol_processing   0
 154 #endif
 155 #ifndef elf_backend_symbol_table_processing
 156 #define elf_backend_symbol_table_processing     0
 157 #endif
 158 #ifndef elf_backend_section_processing
 159 #define elf_backend_section_processing  0
 160 #endif
 161 #ifndef elf_backend_section_from_shdr
 162 #define elf_backend_section_from_shdr   0
 163 #endif
 164 #ifndef elf_backend_fake_sections
 165 #define elf_backend_fake_sections       0
 166 #endif
 167 #ifndef elf_backend_section_from_bfd_section
 168 #define elf_backend_section_from_bfd_section    0
 169 #endif
 170 #ifndef elf_backend_add_symbol_hook
 171 #define elf_backend_add_symbol_hook     0
 172 #endif
 173 #ifndef elf_backend_link_output_symbol_hook
 174 #define elf_backend_link_output_symbol_hook 0
 175 #endif
 176 #ifndef elf_backend_create_dynamic_sections
 177 #define elf_backend_create_dynamic_sections 0
 178 #endif
 179 #ifndef elf_backend_check_relocs
 180 #define elf_backend_check_relocs        0
 181 #endif
 182 #ifndef elf_backend_adjust_dynamic_symbol
 183 #define elf_backend_adjust_dynamic_symbol 0
 184 #endif
 185 #ifndef elf_backend_size_dynamic_sections
 186 #define elf_backend_size_dynamic_sections 0
 187 #endif
 188 #ifndef elf_backend_relocate_section
 189 #define elf_backend_relocate_section    0
 190 #endif
 191 #ifndef elf_backend_finish_dynamic_symbol
 192 #define elf_backend_finish_dynamic_symbol       0
 193 #endif
 194 #ifndef elf_backend_finish_dynamic_sections
 195 #define elf_backend_finish_dynamic_sections     0
 196 #endif
 197 #ifndef elf_backend_begin_write_processing
 198 #define elf_backend_begin_write_processing      0
 199 #endif
 200 #ifndef elf_backend_final_write_processing
 201 #define elf_backend_final_write_processing      0
 202 #endif
 203 #ifndef elf_backend_ecoff_debug_swap
 204 #define elf_backend_ecoff_debug_swap    0
 205 #endif
 206
 207 #ifndef ELF_MACHINE_ALT1
 208 #define ELF_MACHINE_ALT1 0
 209 #endif
 210
 211 #ifndef ELF_MACHINE_ALT2
 212 #define ELF_MACHINE_ALT2 0
 213 #endif
 214
 215 extern const struct elf_size_info _bfd_elfNN_size_info;
 216
 217 static CONST struct elf_backend_data elfNN_bed =
 218 {
 219 #ifdef USE_REL
 220   0,                            /* use_rela_p */
 221 #else
 222   1,                            /* use_rela_p */
 223 #endif
 224   ELF_ARCH,                     /* arch */
 225   ELF_MACHINE_CODE,             /* elf_machine_code */
 226   ELF_MAXPAGESIZE,              /* maxpagesize */
 227   elf_backend_collect,
 228   elf_info_to_howto,
 229   elf_info_to_howto_rel,
 230   elf_backend_sym_is_global,
 231   elf_backend_object_p,
 232   elf_backend_symbol_processing,
 233   elf_backend_symbol_table_processing,
 234   elf_backend_section_processing,
 235   elf_backend_section_from_shdr,
 236   elf_backend_fake_sections,
 237   elf_backend_section_from_bfd_section,
 238   elf_backend_add_symbol_hook,
 239   elf_backend_link_output_symbol_hook,
 240   elf_backend_create_dynamic_sections,
 241   elf_backend_check_relocs,
 242   elf_backend_adjust_dynamic_symbol,
 243   elf_backend_size_dynamic_sections,
 244   elf_backend_relocate_section,
 245   elf_backend_finish_dynamic_symbol,
 246   elf_backend_finish_dynamic_sections,
 247   elf_backend_begin_write_processing,
 248   elf_backend_final_write_processing,
 249   elf_backend_ecoff_debug_swap,
 250   ELF_MACHINE_ALT1,
 251   ELF_MACHINE_ALT2,
 252   &_bfd_elfNN_size_info,
 253   elf_backend_want_got_plt,
 254   elf_backend_plt_readonly,
 255   elf_backend_want_plt_sym,
 256 };
 257
 258 #ifdef TARGET_BIG_SYM
 259 const bfd_target TARGET_BIG_SYM =
 260 {
 261   /* name: identify kind of target */
 262   TARGET_BIG_NAME,
 263
 264   /* flavour: general indication about file */
 265   bfd_target_elf_flavour,
 266
 267   /* byteorder_big_p: data is big endian */
 268   true,
 269
 270   /* header_byteorder_big_p: header is also big endian */
 271   true,
 272
 273   /* object_flags: mask of all file flags */
 274   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 275    DYNAMIC | WP_TEXT | D_PAGED),
 276
 277   /* section_flags: mask of all section flags */
 278   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 279    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 280
 281    /* leading_symbol_char: is the first char of a user symbol
 282       predictable, and if so what is it */
 283    0,
 284
 285   /* ar_pad_char: pad character for filenames within an archive header
 286      FIXME:  this really has nothing to do with ELF, this is a characteristic
 287      of the archiver and/or os and should be independently tunable */
 288   '/',
 289
 290   /* ar_max_namelen: maximum number of characters in an archive header
 291      FIXME:  this really has nothing to do with ELF, this is a characteristic
 292      of the archiver and should be independently tunable.  This value is
 293      a WAG (wild a** guess) */
 294   14,
 295
 296   /* align_power_min: minimum alignment restriction for any section
 297      FIXME:  this value may be target machine dependent */
 298   3,
 299
 300   /* Routines to byte-swap various sized integers from the data sections */
 301   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 302     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 303     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 304
 305   /* Routines to byte-swap various sized integers from the file headers */
 306   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 307     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 308     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 309
 310   /* bfd_check_format: check the format of a file being read */
 311   { _bfd_dummy_target,          /* unknown format */
 312     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 313     bfd_generic_archive_p,      /* an archive */
 314     bfd_elfNN_core_file_p       /* a core file */
 315   },
 316
 317   /* bfd_set_format: set the format of a file being written */
 318   { bfd_false,
 319     bfd_elf_mkobject,
 320     _bfd_generic_mkarchive,
 321     bfd_false
 322   },
 323
 324   /* bfd_write_contents: write cached information into a file being written */
 325   { bfd_false,
 326     bfd_elfNN_write_object_contents,
 327     _bfd_write_archive_contents,
 328     bfd_false
 329   },
 330
 331       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 332       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 333       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 334       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 335       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 336       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 337       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 338       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 339       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 340
 341   /* backend_data: */
 342   (PTR) &elfNN_bed,
 343 };
 344 #endif
 345
 346 #ifdef TARGET_LITTLE_SYM
 347 const bfd_target TARGET_LITTLE_SYM =
 348 {
 349   /* name: identify kind of target */
 350   TARGET_LITTLE_NAME,
 351
 352   /* flavour: general indication about file */
 353   bfd_target_elf_flavour,
 354
 355   /* byteorder_big_p: data is big endian */
 356   false,                /* Nope -- this one's little endian */
 357
 358   /* header_byteorder_big_p: header is also big endian */
 359   false,                /* Nope -- this one's little endian */
 360
 361   /* object_flags: mask of all file flags */
 362   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 363    DYNAMIC | WP_TEXT | D_PAGED),
 364
 365   /* section_flags: mask of all section flags */
 366   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 367    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 368
 369    /* leading_symbol_char: is the first char of a user symbol
 370       predictable, and if so what is it */
 371    0,
 372
 373   /* ar_pad_char: pad character for filenames within an archive header
 374      FIXME:  this really has nothing to do with ELF, this is a characteristic
 375      of the archiver and/or os and should be independently tunable */
 376   '/',
 377
 378   /* ar_max_namelen: maximum number of characters in an archive header
 379      FIXME:  this really has nothing to do with ELF, this is a characteristic
 380      of the archiver and should be independently tunable.  This value is
 381      a WAG (wild a** guess) */
 382   14,
 383
 384   /* align_power_min: minimum alignment restriction for any section
 385      FIXME:  this value may be target machine dependent */
 386   3,
 387
 388   /* Routines to byte-swap various sized integers from the data sections */
 389   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 390     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 391     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 392
 393   /* Routines to byte-swap various sized integers from the file headers */
 394   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 395     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 396     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 397
 398   /* bfd_check_format: check the format of a file being read */
 399   { _bfd_dummy_target,          /* unknown format */
 400     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 401     bfd_generic_archive_p,      /* an archive */
 402     bfd_elfNN_core_file_p       /* a core file */
 403   },
 404
 405   /* bfd_set_format: set the format of a file being written */
 406   { bfd_false,
 407     bfd_elf_mkobject,
 408     _bfd_generic_mkarchive,
 409     bfd_false
 410   },
 411
 412   /* bfd_write_contents: write cached information into a file being written */
 413   { bfd_false,
 414     bfd_elfNN_write_object_contents,
 415     _bfd_write_archive_contents,
 416     bfd_false
 417   },
 418
 419       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 420       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 421       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 422       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 423       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 424       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 425       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 426       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 427       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 428
 429   /* backend_data: */
 430   (PTR) &elfNN_bed,
 431 };
 432 #endif