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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_read_minisymbols      _bfd_elf_read_minisymbols
  40 #define bfd_elfNN_minisymbol_to_symbol  _bfd_elf_minisymbol_to_symbol
  41 #define bfd_elfNN_get_dynamic_symtab_upper_bound _bfd_elf_get_dynamic_symtab_upper_bound
  42 #define bfd_elfNN_get_lineno            _bfd_elf_get_lineno
  43 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
  44 #define bfd_elfNN_get_symbol_info       _bfd_elf_get_symbol_info
  45 #define bfd_elfNN_get_symtab            _bfd_elf_get_symtab
  46 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
  47 #if 0 /* done in elf-bfd.h */
  48 #define bfd_elfNN_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
  49 #endif
  50 #define bfd_elfNN_make_empty_symbol     _bfd_elf_make_empty_symbol
  51 #define bfd_elfNN_new_section_hook      _bfd_elf_new_section_hook
  52 #define bfd_elfNN_set_arch_mach         _bfd_elf_set_arch_mach
  53 #ifndef bfd_elfNN_set_section_contents
  54 #define bfd_elfNN_set_section_contents  _bfd_elf_set_section_contents
  55 #endif
  56 #define bfd_elfNN_sizeof_headers        _bfd_elf_sizeof_headers
  57 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
  58
  59 #define bfd_elfNN_get_section_contents_in_window \
  60   _bfd_generic_get_section_contents_in_window
  61
  62 #ifndef elf_backend_want_got_plt
  63 #define elf_backend_want_got_plt 0
  64 #endif
  65 #ifndef elf_backend_plt_readonly
  66 #define elf_backend_plt_readonly 0
  67 #endif
  68 #ifndef elf_backend_want_plt_sym
  69 #define elf_backend_want_plt_sym 0
  70 #endif
  71
  72 #ifndef elf_backend_want_hdr_in_seg
  73 #define elf_backend_want_hdr_in_seg 0
  74 #endif
  75
  76 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  77 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  78 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  79
  80 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  81 #define bfd_elfNN_bfd_get_relocated_section_contents \
  82  bfd_generic_get_relocated_section_contents
  83 #endif
  84
  85 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  86 #define bfd_elfNN_bfd_make_debug_symbol \
  87   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  88
  89 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  90 #define bfd_elfNN_bfd_copy_private_symbol_data \
  91   _bfd_elf_copy_private_symbol_data
  92 #endif
  93
  94 #ifndef bfd_elfNN_bfd_copy_private_section_data
  95 #define bfd_elfNN_bfd_copy_private_section_data \
  96   _bfd_elf_copy_private_section_data
  97 #endif
  98 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
  99 #define bfd_elfNN_bfd_copy_private_bfd_data \
 100   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 101 #endif
 102 #ifndef bfd_elfNN_bfd_print_private_bfd_data
 103 #define bfd_elfNN_bfd_print_private_bfd_data \
 104   _bfd_elf_print_private_bfd_data
 105 #endif
 106 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
 107 #define bfd_elfNN_bfd_merge_private_bfd_data \
 108   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 109 #endif
 110 #ifndef bfd_elfNN_bfd_set_private_flags
 111 #define bfd_elfNN_bfd_set_private_flags \
 112   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
 113 #endif
 114 #ifndef bfd_elfNN_bfd_is_local_label
 115 #define bfd_elfNN_bfd_is_local_label bfd_generic_is_local_label
 116 #endif
 117
 118 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
 119 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
 120   _bfd_nodynamic_get_dynamic_reloc_upper_bound
 121 #endif
 122 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
 123 #define bfd_elfNN_canonicalize_dynamic_reloc \
 124   _bfd_nodynamic_canonicalize_dynamic_reloc
 125 #endif
 126
 127 #ifdef elf_backend_relocate_section
 128 #ifndef bfd_elfNN_bfd_link_hash_table_create
 129 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
 130 #endif
 131 #else /* ! defined (elf_backend_relocate_section) */
 132 /* If no backend relocate_section routine, use the generic linker.  */
 133 #ifndef bfd_elfNN_bfd_link_hash_table_create
 134 #define bfd_elfNN_bfd_link_hash_table_create \
 135   _bfd_generic_link_hash_table_create
 136 #endif
 137 #ifndef bfd_elfNN_bfd_link_add_symbols
 138 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
 139 #endif
 140 #ifndef bfd_elfNN_bfd_final_link
 141 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
 142 #endif
 143 #endif /* ! defined (elf_backend_relocate_section) */
 144 #ifndef bfd_elfNN_bfd_link_split_section
 145 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
 146 #endif
 147
 148 #ifndef elf_info_to_howto_rel
 149 #define elf_info_to_howto_rel 0
 150 #endif
 151
 152 #ifndef ELF_MAXPAGESIZE
 153 #define ELF_MAXPAGESIZE 1
 154 #endif
 155
 156 #ifndef elf_backend_collect
 157 #define elf_backend_collect false
 158 #endif
 159 #ifndef elf_backend_type_change_ok
 160 #define elf_backend_type_change_ok false
 161 #endif
 162
 163 #ifndef elf_backend_sym_is_global
 164 #define elf_backend_sym_is_global       0
 165 #endif
 166 #ifndef elf_backend_object_p
 167 #define elf_backend_object_p            0
 168 #endif
 169 #ifndef elf_backend_symbol_processing
 170 #define elf_backend_symbol_processing   0
 171 #endif
 172 #ifndef elf_backend_symbol_table_processing
 173 #define elf_backend_symbol_table_processing     0
 174 #endif
 175 #ifndef elf_backend_section_processing
 176 #define elf_backend_section_processing  0
 177 #endif
 178 #ifndef elf_backend_section_from_shdr
 179 #define elf_backend_section_from_shdr   0
 180 #endif
 181 #ifndef elf_backend_fake_sections
 182 #define elf_backend_fake_sections       0
 183 #endif
 184 #ifndef elf_backend_section_from_bfd_section
 185 #define elf_backend_section_from_bfd_section    0
 186 #endif
 187 #ifndef elf_backend_add_symbol_hook
 188 #define elf_backend_add_symbol_hook     0
 189 #endif
 190 #ifndef elf_backend_link_output_symbol_hook
 191 #define elf_backend_link_output_symbol_hook 0
 192 #endif
 193 #ifndef elf_backend_create_dynamic_sections
 194 #define elf_backend_create_dynamic_sections 0
 195 #endif
 196 #ifndef elf_backend_check_relocs
 197 #define elf_backend_check_relocs        0
 198 #endif
 199 #ifndef elf_backend_adjust_dynamic_symbol
 200 #define elf_backend_adjust_dynamic_symbol 0
 201 #endif
 202 #ifndef elf_backend_size_dynamic_sections
 203 #define elf_backend_size_dynamic_sections 0
 204 #endif
 205 #ifndef elf_backend_relocate_section
 206 #define elf_backend_relocate_section    0
 207 #endif
 208 #ifndef elf_backend_finish_dynamic_symbol
 209 #define elf_backend_finish_dynamic_symbol       0
 210 #endif
 211 #ifndef elf_backend_finish_dynamic_sections
 212 #define elf_backend_finish_dynamic_sections     0
 213 #endif
 214 #ifndef elf_backend_begin_write_processing
 215 #define elf_backend_begin_write_processing      0
 216 #endif
 217 #ifndef elf_backend_final_write_processing
 218 #define elf_backend_final_write_processing      0
 219 #endif
 220 #ifndef elf_backend_additional_program_headers
 221 #define elf_backend_additional_program_headers  0
 222 #endif
 223 #ifndef elf_backend_modify_segment_map
 224 #define elf_backend_modify_segment_map  0
 225 #endif
 226 #ifndef elf_backend_ecoff_debug_swap
 227 #define elf_backend_ecoff_debug_swap    0
 228 #endif
 229
 230 #ifndef ELF_MACHINE_ALT1
 231 #define ELF_MACHINE_ALT1 0
 232 #endif
 233
 234 #ifndef ELF_MACHINE_ALT2
 235 #define ELF_MACHINE_ALT2 0
 236 #endif
 237
 238 extern const struct elf_size_info _bfd_elfNN_size_info;
 239
 240 static CONST struct elf_backend_data elfNN_bed =
 241 {
 242 #ifdef USE_REL
 243   0,                            /* use_rela_p */
 244 #else
 245   1,                            /* use_rela_p */
 246 #endif
 247   ELF_ARCH,                     /* arch */
 248   ELF_MACHINE_CODE,             /* elf_machine_code */
 249   ELF_MAXPAGESIZE,              /* maxpagesize */
 250   elf_backend_collect,
 251   elf_backend_type_change_ok,
 252   elf_info_to_howto,
 253   elf_info_to_howto_rel,
 254   elf_backend_sym_is_global,
 255   elf_backend_object_p,
 256   elf_backend_symbol_processing,
 257   elf_backend_symbol_table_processing,
 258   elf_backend_section_processing,
 259   elf_backend_section_from_shdr,
 260   elf_backend_fake_sections,
 261   elf_backend_section_from_bfd_section,
 262   elf_backend_add_symbol_hook,
 263   elf_backend_link_output_symbol_hook,
 264   elf_backend_create_dynamic_sections,
 265   elf_backend_check_relocs,
 266   elf_backend_adjust_dynamic_symbol,
 267   elf_backend_size_dynamic_sections,
 268   elf_backend_relocate_section,
 269   elf_backend_finish_dynamic_symbol,
 270   elf_backend_finish_dynamic_sections,
 271   elf_backend_begin_write_processing,
 272   elf_backend_final_write_processing,
 273   elf_backend_additional_program_headers,
 274   elf_backend_modify_segment_map,
 275   elf_backend_ecoff_debug_swap,
 276   ELF_MACHINE_ALT1,
 277   ELF_MACHINE_ALT2,
 278   &_bfd_elfNN_size_info,
 279   elf_backend_want_got_plt,
 280   elf_backend_plt_readonly,
 281   elf_backend_want_plt_sym,
 282   elf_backend_want_hdr_in_seg,
 283 };
 284
 285 #ifdef TARGET_BIG_SYM
 286 const bfd_target TARGET_BIG_SYM =
 287 {
 288   /* name: identify kind of target */
 289   TARGET_BIG_NAME,
 290
 291   /* flavour: general indication about file */
 292   bfd_target_elf_flavour,
 293
 294   /* byteorder: data is big endian */
 295   BFD_ENDIAN_BIG,
 296
 297   /* header_byteorder: header is also big endian */
 298   BFD_ENDIAN_BIG,
 299
 300   /* object_flags: mask of all file flags */
 301   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 302    DYNAMIC | WP_TEXT | D_PAGED),
 303
 304   /* section_flags: mask of all section flags */
 305   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 306    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 307
 308    /* leading_symbol_char: is the first char of a user symbol
 309       predictable, and if so what is it */
 310    0,
 311
 312   /* ar_pad_char: pad character for filenames within an archive header
 313      FIXME:  this really has nothing to do with ELF, this is a characteristic
 314      of the archiver and/or os and should be independently tunable */
 315   '/',
 316
 317   /* ar_max_namelen: maximum number of characters in an archive header
 318      FIXME:  this really has nothing to do with ELF, this is a characteristic
 319      of the archiver and should be independently tunable.  This value is
 320      a WAG (wild a** guess) */
 321   14,
 322
 323   /* Routines to byte-swap various sized integers from the data sections */
 324   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 325     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 326     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 327
 328   /* Routines to byte-swap various sized integers from the file headers */
 329   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 330     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 331     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 332
 333   /* bfd_check_format: check the format of a file being read */
 334   { _bfd_dummy_target,          /* unknown format */
 335     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 336     bfd_generic_archive_p,      /* an archive */
 337     bfd_elfNN_core_file_p       /* a core file */
 338   },
 339
 340   /* bfd_set_format: set the format of a file being written */
 341   { bfd_false,
 342     bfd_elf_mkobject,
 343     _bfd_generic_mkarchive,
 344     bfd_false
 345   },
 346
 347   /* bfd_write_contents: write cached information into a file being written */
 348   { bfd_false,
 349     bfd_elfNN_write_object_contents,
 350     _bfd_write_archive_contents,
 351     bfd_false
 352   },
 353
 354       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 355       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 356       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 357       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 358       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 359       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 360       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 361       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 362       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 363
 364   /* backend_data: */
 365   (PTR) &elfNN_bed,
 366 };
 367 #endif
 368
 369 #ifdef TARGET_LITTLE_SYM
 370 const bfd_target TARGET_LITTLE_SYM =
 371 {
 372   /* name: identify kind of target */
 373   TARGET_LITTLE_NAME,
 374
 375   /* flavour: general indication about file */
 376   bfd_target_elf_flavour,
 377
 378   /* byteorder: data is little endian */
 379   BFD_ENDIAN_LITTLE,
 380
 381   /* header_byteorder: header is also little endian */
 382   BFD_ENDIAN_LITTLE,
 383
 384   /* object_flags: mask of all file flags */
 385   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 386    DYNAMIC | WP_TEXT | D_PAGED),
 387
 388   /* section_flags: mask of all section flags */
 389   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 390    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 391
 392    /* leading_symbol_char: is the first char of a user symbol
 393       predictable, and if so what is it */
 394    0,
 395
 396   /* ar_pad_char: pad character for filenames within an archive header
 397      FIXME:  this really has nothing to do with ELF, this is a characteristic
 398      of the archiver and/or os and should be independently tunable */
 399   '/',
 400
 401   /* ar_max_namelen: maximum number of characters in an archive header
 402      FIXME:  this really has nothing to do with ELF, this is a characteristic
 403      of the archiver and should be independently tunable.  This value is
 404      a WAG (wild a** guess) */
 405   14,
 406
 407   /* Routines to byte-swap various sized integers from the data sections */
 408   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 409     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 410     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 411
 412   /* Routines to byte-swap various sized integers from the file headers */
 413   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 414     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 415     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 416
 417   /* bfd_check_format: check the format of a file being read */
 418   { _bfd_dummy_target,          /* unknown format */
 419     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 420     bfd_generic_archive_p,      /* an archive */
 421     bfd_elfNN_core_file_p       /* a core file */
 422   },
 423
 424   /* bfd_set_format: set the format of a file being written */
 425   { bfd_false,
 426     bfd_elf_mkobject,
 427     _bfd_generic_mkarchive,
 428     bfd_false
 429   },
 430
 431   /* bfd_write_contents: write cached information into a file being written */
 432   { bfd_false,
 433     bfd_elfNN_write_object_contents,
 434     _bfd_write_archive_contents,
 435     bfd_false
 436   },
 437
 438       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 439       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 440       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 441       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 442       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 443       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 444       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 445       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 446       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 447
 448   /* backend_data: */
 449   (PTR) &elfNN_bed,
 450 };
 451 #endif