bfd/elfxx-target.h

   1 /* Target definitions for NN-bit ELF
   2    Copyright 1993, 1994, 1995, 1996 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 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  73 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  74 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  75
  76 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  77 #define bfd_elfNN_bfd_get_relocated_section_contents \
  78  bfd_generic_get_relocated_section_contents
  79 #endif
  80
  81 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  82 #define bfd_elfNN_bfd_make_debug_symbol \
  83   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  84
  85 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  86 #define bfd_elfNN_bfd_copy_private_symbol_data \
  87   _bfd_elf_copy_private_symbol_data
  88 #endif
  89
  90 #ifndef bfd_elfNN_bfd_copy_private_section_data
  91 #define bfd_elfNN_bfd_copy_private_section_data \
  92   _bfd_elf_copy_private_section_data
  93 #endif
  94 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
  95 #define bfd_elfNN_bfd_copy_private_bfd_data \
  96   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  97 #endif
  98 #ifndef bfd_elfNN_bfd_print_private_bfd_data
  99 #define bfd_elfNN_bfd_print_private_bfd_data \
 100   _bfd_elf_print_private_bfd_data
 101 #endif
 102 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
 103 #define bfd_elfNN_bfd_merge_private_bfd_data \
 104   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 105 #endif
 106 #ifndef bfd_elfNN_bfd_set_private_flags
 107 #define bfd_elfNN_bfd_set_private_flags \
 108   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
 109 #endif
 110 #ifndef bfd_elfNN_bfd_is_local_label
 111 #define bfd_elfNN_bfd_is_local_label bfd_generic_is_local_label
 112 #endif
 113
 114 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
 115 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
 116   _bfd_nodynamic_get_dynamic_reloc_upper_bound
 117 #endif
 118 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
 119 #define bfd_elfNN_canonicalize_dynamic_reloc \
 120   _bfd_nodynamic_canonicalize_dynamic_reloc
 121 #endif
 122
 123 #ifdef elf_backend_relocate_section
 124 #ifndef bfd_elfNN_bfd_link_hash_table_create
 125 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
 126 #endif
 127 #else /* ! defined (elf_backend_relocate_section) */
 128 /* If no backend relocate_section routine, use the generic linker.  */
 129 #ifndef bfd_elfNN_bfd_link_hash_table_create
 130 #define bfd_elfNN_bfd_link_hash_table_create \
 131   _bfd_generic_link_hash_table_create
 132 #endif
 133 #ifndef bfd_elfNN_bfd_link_add_symbols
 134 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
 135 #endif
 136 #ifndef bfd_elfNN_bfd_final_link
 137 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
 138 #endif
 139 #endif /* ! defined (elf_backend_relocate_section) */
 140 #ifndef bfd_elfNN_bfd_link_split_section
 141 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
 142 #endif
 143
 144 #ifndef elf_symbol_leading_char
 145 #define elf_symbol_leading_char 0
 146 #endif
 147
 148 #ifndef elf_info_to_howto
 149 #define elf_info_to_howto 0
 150 #endif
 151
 152 #ifndef elf_info_to_howto_rel
 153 #define elf_info_to_howto_rel 0
 154 #endif
 155
 156 #ifndef ELF_MAXPAGESIZE
 157 #define ELF_MAXPAGESIZE 1
 158 #endif
 159
 160 #ifndef elf_backend_collect
 161 #define elf_backend_collect false
 162 #endif
 163 #ifndef elf_backend_type_change_ok
 164 #define elf_backend_type_change_ok false
 165 #endif
 166
 167 #ifndef elf_backend_sym_is_global
 168 #define elf_backend_sym_is_global       0
 169 #endif
 170 #ifndef elf_backend_object_p
 171 #define elf_backend_object_p            0
 172 #endif
 173 #ifndef elf_backend_symbol_processing
 174 #define elf_backend_symbol_processing   0
 175 #endif
 176 #ifndef elf_backend_symbol_table_processing
 177 #define elf_backend_symbol_table_processing     0
 178 #endif
 179 #ifndef elf_backend_section_processing
 180 #define elf_backend_section_processing  0
 181 #endif
 182 #ifndef elf_backend_section_from_shdr
 183 #define elf_backend_section_from_shdr   0
 184 #endif
 185 #ifndef elf_backend_fake_sections
 186 #define elf_backend_fake_sections       0
 187 #endif
 188 #ifndef elf_backend_section_from_bfd_section
 189 #define elf_backend_section_from_bfd_section    0
 190 #endif
 191 #ifndef elf_backend_add_symbol_hook
 192 #define elf_backend_add_symbol_hook     0
 193 #endif
 194 #ifndef elf_backend_link_output_symbol_hook
 195 #define elf_backend_link_output_symbol_hook 0
 196 #endif
 197 #ifndef elf_backend_create_dynamic_sections
 198 #define elf_backend_create_dynamic_sections 0
 199 #endif
 200 #ifndef elf_backend_check_relocs
 201 #define elf_backend_check_relocs        0
 202 #endif
 203 #ifndef elf_backend_adjust_dynamic_symbol
 204 #define elf_backend_adjust_dynamic_symbol 0
 205 #endif
 206 #ifndef elf_backend_size_dynamic_sections
 207 #define elf_backend_size_dynamic_sections 0
 208 #endif
 209 #ifndef elf_backend_relocate_section
 210 #define elf_backend_relocate_section    0
 211 #endif
 212 #ifndef elf_backend_finish_dynamic_symbol
 213 #define elf_backend_finish_dynamic_symbol       0
 214 #endif
 215 #ifndef elf_backend_finish_dynamic_sections
 216 #define elf_backend_finish_dynamic_sections     0
 217 #endif
 218 #ifndef elf_backend_begin_write_processing
 219 #define elf_backend_begin_write_processing      0
 220 #endif
 221 #ifndef elf_backend_final_write_processing
 222 #define elf_backend_final_write_processing      0
 223 #endif
 224 #ifndef elf_backend_additional_program_headers
 225 #define elf_backend_additional_program_headers  0
 226 #endif
 227 #ifndef elf_backend_modify_segment_map
 228 #define elf_backend_modify_segment_map  0
 229 #endif
 230 #ifndef elf_backend_ecoff_debug_swap
 231 #define elf_backend_ecoff_debug_swap    0
 232 #endif
 233
 234 #ifndef ELF_MACHINE_ALT1
 235 #define ELF_MACHINE_ALT1 0
 236 #endif
 237
 238 #ifndef ELF_MACHINE_ALT2
 239 #define ELF_MACHINE_ALT2 0
 240 #endif
 241
 242 #ifndef elf_backend_size_info
 243 #define elf_backend_size_info _bfd_elfNN_size_info
 244 #endif
 245
 246 extern const struct elf_size_info _bfd_elfNN_size_info;
 247
 248 static CONST struct elf_backend_data elfNN_bed =
 249 {
 250 #ifdef USE_REL
 251   0,                            /* use_rela_p */
 252 #else
 253   1,                            /* use_rela_p */
 254 #endif
 255   ELF_ARCH,                     /* arch */
 256   ELF_MACHINE_CODE,             /* elf_machine_code */
 257   ELF_MAXPAGESIZE,              /* maxpagesize */
 258   elf_backend_collect,
 259   elf_backend_type_change_ok,
 260   elf_info_to_howto,
 261   elf_info_to_howto_rel,
 262   elf_backend_sym_is_global,
 263   elf_backend_object_p,
 264   elf_backend_symbol_processing,
 265   elf_backend_symbol_table_processing,
 266   elf_backend_section_processing,
 267   elf_backend_section_from_shdr,
 268   elf_backend_fake_sections,
 269   elf_backend_section_from_bfd_section,
 270   elf_backend_add_symbol_hook,
 271   elf_backend_link_output_symbol_hook,
 272   elf_backend_create_dynamic_sections,
 273   elf_backend_check_relocs,
 274   elf_backend_adjust_dynamic_symbol,
 275   elf_backend_size_dynamic_sections,
 276   elf_backend_relocate_section,
 277   elf_backend_finish_dynamic_symbol,
 278   elf_backend_finish_dynamic_sections,
 279   elf_backend_begin_write_processing,
 280   elf_backend_final_write_processing,
 281   elf_backend_additional_program_headers,
 282   elf_backend_modify_segment_map,
 283   elf_backend_ecoff_debug_swap,
 284   ELF_MACHINE_ALT1,
 285   ELF_MACHINE_ALT2,
 286   &elf_backend_size_info,
 287   elf_backend_want_got_plt,
 288   elf_backend_plt_readonly,
 289   elf_backend_want_plt_sym
 290 };
 291
 292 #ifdef TARGET_BIG_SYM
 293 const bfd_target TARGET_BIG_SYM =
 294 {
 295   /* name: identify kind of target */
 296   TARGET_BIG_NAME,
 297
 298   /* flavour: general indication about file */
 299   bfd_target_elf_flavour,
 300
 301   /* byteorder: data is big endian */
 302   BFD_ENDIAN_BIG,
 303
 304   /* header_byteorder: header is also big endian */
 305   BFD_ENDIAN_BIG,
 306
 307   /* object_flags: mask of all file flags */
 308   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 309    DYNAMIC | WP_TEXT | D_PAGED),
 310
 311   /* section_flags: mask of all section flags */
 312   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 313    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 314
 315    /* leading_symbol_char: is the first char of a user symbol
 316       predictable, and if so what is it */
 317   elf_symbol_leading_char,
 318
 319   /* ar_pad_char: pad character for filenames within an archive header
 320      FIXME:  this really has nothing to do with ELF, this is a characteristic
 321      of the archiver and/or os and should be independently tunable */
 322   '/',
 323
 324   /* ar_max_namelen: maximum number of characters in an archive header
 325      FIXME:  this really has nothing to do with ELF, this is a characteristic
 326      of the archiver and should be independently tunable.  This value is
 327      a WAG (wild a** guess) */
 328   14,
 329
 330   /* Routines to byte-swap various sized integers from the data sections */
 331   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 332     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 333     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 334
 335   /* Routines to byte-swap various sized integers from the file headers */
 336   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 337     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 338     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 339
 340   /* bfd_check_format: check the format of a file being read */
 341   { _bfd_dummy_target,          /* unknown format */
 342     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 343     bfd_generic_archive_p,      /* an archive */
 344     bfd_elfNN_core_file_p       /* a core file */
 345   },
 346
 347   /* bfd_set_format: set the format of a file being written */
 348   { bfd_false,
 349     bfd_elf_mkobject,
 350     _bfd_generic_mkarchive,
 351     bfd_false
 352   },
 353
 354   /* bfd_write_contents: write cached information into a file being written */
 355   { bfd_false,
 356     bfd_elfNN_write_object_contents,
 357     _bfd_write_archive_contents,
 358     bfd_false
 359   },
 360
 361       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 362       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 363       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 364       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 365       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 366       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 367       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 368       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 369       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 370
 371   /* backend_data: */
 372   (PTR) &elfNN_bed,
 373 };
 374 #endif
 375
 376 #ifdef TARGET_LITTLE_SYM
 377 const bfd_target TARGET_LITTLE_SYM =
 378 {
 379   /* name: identify kind of target */
 380   TARGET_LITTLE_NAME,
 381
 382   /* flavour: general indication about file */
 383   bfd_target_elf_flavour,
 384
 385   /* byteorder: data is little endian */
 386   BFD_ENDIAN_LITTLE,
 387
 388   /* header_byteorder: header is also little endian */
 389   BFD_ENDIAN_LITTLE,
 390
 391   /* object_flags: mask of all file flags */
 392   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 393    DYNAMIC | WP_TEXT | D_PAGED),
 394
 395   /* section_flags: mask of all section flags */
 396   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 397    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 398
 399    /* leading_symbol_char: is the first char of a user symbol
 400       predictable, and if so what is it */
 401   elf_symbol_leading_char,
 402
 403   /* ar_pad_char: pad character for filenames within an archive header
 404      FIXME:  this really has nothing to do with ELF, this is a characteristic
 405      of the archiver and/or os and should be independently tunable */
 406   '/',
 407
 408   /* ar_max_namelen: maximum number of characters in an archive header
 409      FIXME:  this really has nothing to do with ELF, this is a characteristic
 410      of the archiver and should be independently tunable.  This value is
 411      a WAG (wild a** guess) */
 412   14,
 413
 414   /* Routines to byte-swap various sized integers from the data sections */
 415   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 416     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 417     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 418
 419   /* Routines to byte-swap various sized integers from the file headers */
 420   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 421     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 422     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 423
 424   /* bfd_check_format: check the format of a file being read */
 425   { _bfd_dummy_target,          /* unknown format */
 426     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 427     bfd_generic_archive_p,      /* an archive */
 428     bfd_elfNN_core_file_p       /* a core file */
 429   },
 430
 431   /* bfd_set_format: set the format of a file being written */
 432   { bfd_false,
 433     bfd_elf_mkobject,
 434     _bfd_generic_mkarchive,
 435     bfd_false
 436   },
 437
 438   /* bfd_write_contents: write cached information into a file being written */
 439   { bfd_false,
 440     bfd_elfNN_write_object_contents,
 441     _bfd_write_archive_contents,
 442     bfd_false
 443   },
 444
 445       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 446       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 447       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 448       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 449       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 450       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 451       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 452       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 453       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 454
 455   /* backend_data: */
 456   (PTR) &elfNN_bed,
 457 };
 458 #endif