bfd/elfxx-target.h

   1 /* Target definitions for NN-bit ELF
   2    Copyright 1993, 1994, 1995, 1996, 1997 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 #ifndef bfd_elfNN_get_reloc_upper_bound
  44 #define bfd_elfNN_get_reloc_upper_bound _bfd_elf_get_reloc_upper_bound
  45 #endif
  46 #define bfd_elfNN_get_symbol_info       _bfd_elf_get_symbol_info
  47 #define bfd_elfNN_get_symtab            _bfd_elf_get_symtab
  48 #define bfd_elfNN_get_symtab_upper_bound _bfd_elf_get_symtab_upper_bound
  49 #if 0 /* done in elf-bfd.h */
  50 #define bfd_elfNN_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol
  51 #endif
  52 #define bfd_elfNN_make_empty_symbol     _bfd_elf_make_empty_symbol
  53 #define bfd_elfNN_new_section_hook      _bfd_elf_new_section_hook
  54 #define bfd_elfNN_set_arch_mach         _bfd_elf_set_arch_mach
  55 #ifndef bfd_elfNN_set_section_contents
  56 #define bfd_elfNN_set_section_contents  _bfd_elf_set_section_contents
  57 #endif
  58 #define bfd_elfNN_sizeof_headers        _bfd_elf_sizeof_headers
  59 #define bfd_elfNN_write_object_contents _bfd_elf_write_object_contents
  60
  61 #define bfd_elfNN_get_section_contents_in_window \
  62   _bfd_generic_get_section_contents_in_window
  63
  64 #ifndef elf_backend_want_got_plt
  65 #define elf_backend_want_got_plt 0
  66 #endif
  67 #ifndef elf_backend_plt_readonly
  68 #define elf_backend_plt_readonly 0
  69 #endif
  70 #ifndef elf_backend_want_plt_sym
  71 #define elf_backend_want_plt_sym 0
  72 #endif
  73
  74 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  75 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  76 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  77
  78 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  79 #define bfd_elfNN_bfd_get_relocated_section_contents \
  80  bfd_generic_get_relocated_section_contents
  81 #endif
  82
  83 #ifndef bfd_elfNN_bfd_relax_section
  84 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  85 #endif
  86
  87 #define bfd_elfNN_bfd_make_debug_symbol \
  88   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  89
  90 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  91 #define bfd_elfNN_bfd_copy_private_symbol_data \
  92   _bfd_elf_copy_private_symbol_data
  93 #endif
  94
  95 #ifndef bfd_elfNN_bfd_copy_private_section_data
  96 #define bfd_elfNN_bfd_copy_private_section_data \
  97   _bfd_elf_copy_private_section_data
  98 #endif
  99 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
 100 #define bfd_elfNN_bfd_copy_private_bfd_data \
 101   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 102 #endif
 103 #ifndef bfd_elfNN_bfd_print_private_bfd_data
 104 #define bfd_elfNN_bfd_print_private_bfd_data \
 105   _bfd_elf_print_private_bfd_data
 106 #endif
 107 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
 108 #define bfd_elfNN_bfd_merge_private_bfd_data \
 109   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 110 #endif
 111 #ifndef bfd_elfNN_bfd_set_private_flags
 112 #define bfd_elfNN_bfd_set_private_flags \
 113   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
 114 #endif
 115 #ifndef bfd_elfNN_bfd_is_local_label_name
 116 #define bfd_elfNN_bfd_is_local_label_name bfd_generic_is_local_label_name
 117 #endif
 118
 119 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
 120 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
 121   _bfd_elf_get_dynamic_reloc_upper_bound
 122 #endif
 123 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
 124 #define bfd_elfNN_canonicalize_dynamic_reloc \
 125   _bfd_elf_canonicalize_dynamic_reloc
 126 #endif
 127
 128 #ifdef elf_backend_relocate_section
 129 #ifndef bfd_elfNN_bfd_link_hash_table_create
 130 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
 131 #endif
 132 #else /* ! defined (elf_backend_relocate_section) */
 133 /* If no backend relocate_section routine, use the generic linker.  */
 134 #ifndef bfd_elfNN_bfd_link_hash_table_create
 135 #define bfd_elfNN_bfd_link_hash_table_create \
 136   _bfd_generic_link_hash_table_create
 137 #endif
 138 #ifndef bfd_elfNN_bfd_link_add_symbols
 139 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
 140 #endif
 141 #ifndef bfd_elfNN_bfd_final_link
 142 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
 143 #endif
 144 #endif /* ! defined (elf_backend_relocate_section) */
 145 #ifndef bfd_elfNN_bfd_link_split_section
 146 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
 147 #endif
 148
 149 #ifndef bfd_elfNN_archive_p
 150 #define bfd_elfNN_archive_p bfd_generic_archive_p
 151 #endif
 152
 153 #ifndef bfd_elfNN_write_archive_contents
 154 #define bfd_elfNN_write_archive_contents _bfd_write_archive_contents
 155 #endif
 156
 157 #ifndef bfd_elfNN_mkobject
 158 #define bfd_elfNN_mkobject bfd_elf_mkobject
 159 #endif
 160
 161 #ifndef bfd_elfNN_mkarchive
 162 #define bfd_elfNN_mkarchive _bfd_generic_mkarchive
 163 #endif
 164
 165 #ifndef elf_symbol_leading_char
 166 #define elf_symbol_leading_char 0
 167 #endif
 168
 169 #ifndef elf_info_to_howto
 170 #define elf_info_to_howto 0
 171 #endif
 172
 173 #ifndef elf_info_to_howto_rel
 174 #define elf_info_to_howto_rel 0
 175 #endif
 176
 177 #ifndef ELF_MAXPAGESIZE
 178 #define ELF_MAXPAGESIZE 1
 179 #endif
 180
 181 #ifndef elf_backend_collect
 182 #define elf_backend_collect false
 183 #endif
 184 #ifndef elf_backend_type_change_ok
 185 #define elf_backend_type_change_ok false
 186 #endif
 187
 188 #ifndef elf_backend_sym_is_global
 189 #define elf_backend_sym_is_global       0
 190 #endif
 191 #ifndef elf_backend_object_p
 192 #define elf_backend_object_p            0
 193 #endif
 194 #ifndef elf_backend_symbol_processing
 195 #define elf_backend_symbol_processing   0
 196 #endif
 197 #ifndef elf_backend_symbol_table_processing
 198 #define elf_backend_symbol_table_processing     0
 199 #endif
 200 #ifndef elf_backend_section_processing
 201 #define elf_backend_section_processing  0
 202 #endif
 203 #ifndef elf_backend_section_from_shdr
 204 #define elf_backend_section_from_shdr   0
 205 #endif
 206 #ifndef elf_backend_fake_sections
 207 #define elf_backend_fake_sections       0
 208 #endif
 209 #ifndef elf_backend_section_from_bfd_section
 210 #define elf_backend_section_from_bfd_section    0
 211 #endif
 212 #ifndef elf_backend_add_symbol_hook
 213 #define elf_backend_add_symbol_hook     0
 214 #endif
 215 #ifndef elf_backend_link_output_symbol_hook
 216 #define elf_backend_link_output_symbol_hook 0
 217 #endif
 218 #ifndef elf_backend_create_dynamic_sections
 219 #define elf_backend_create_dynamic_sections 0
 220 #endif
 221 #ifndef elf_backend_check_relocs
 222 #define elf_backend_check_relocs        0
 223 #endif
 224 #ifndef elf_backend_adjust_dynamic_symbol
 225 #define elf_backend_adjust_dynamic_symbol 0
 226 #endif
 227 #ifndef elf_backend_always_size_sections
 228 #define elf_backend_always_size_sections 0
 229 #endif
 230 #ifndef elf_backend_size_dynamic_sections
 231 #define elf_backend_size_dynamic_sections 0
 232 #endif
 233 #ifndef elf_backend_relocate_section
 234 #define elf_backend_relocate_section    0
 235 #endif
 236 #ifndef elf_backend_finish_dynamic_symbol
 237 #define elf_backend_finish_dynamic_symbol       0
 238 #endif
 239 #ifndef elf_backend_finish_dynamic_sections
 240 #define elf_backend_finish_dynamic_sections     0
 241 #endif
 242 #ifndef elf_backend_begin_write_processing
 243 #define elf_backend_begin_write_processing      0
 244 #endif
 245 #ifndef elf_backend_final_write_processing
 246 #define elf_backend_final_write_processing      0
 247 #endif
 248 #ifndef elf_backend_additional_program_headers
 249 #define elf_backend_additional_program_headers  0
 250 #endif
 251 #ifndef elf_backend_modify_segment_map
 252 #define elf_backend_modify_segment_map  0
 253 #endif
 254 #ifndef elf_backend_ecoff_debug_swap
 255 #define elf_backend_ecoff_debug_swap    0
 256 #endif
 257
 258 #ifndef ELF_MACHINE_ALT1
 259 #define ELF_MACHINE_ALT1 0
 260 #endif
 261
 262 #ifndef ELF_MACHINE_ALT2
 263 #define ELF_MACHINE_ALT2 0
 264 #endif
 265
 266 #ifndef elf_backend_size_info
 267 #define elf_backend_size_info _bfd_elfNN_size_info
 268 #endif
 269
 270 extern const struct elf_size_info _bfd_elfNN_size_info;
 271
 272 static CONST struct elf_backend_data elfNN_bed =
 273 {
 274 #ifdef USE_REL
 275   0,                            /* use_rela_p */
 276 #else
 277   1,                            /* use_rela_p */
 278 #endif
 279   ELF_ARCH,                     /* arch */
 280   ELF_MACHINE_CODE,             /* elf_machine_code */
 281   ELF_MAXPAGESIZE,              /* maxpagesize */
 282   elf_backend_collect,
 283   elf_backend_type_change_ok,
 284   elf_info_to_howto,
 285   elf_info_to_howto_rel,
 286   elf_backend_sym_is_global,
 287   elf_backend_object_p,
 288   elf_backend_symbol_processing,
 289   elf_backend_symbol_table_processing,
 290   elf_backend_section_processing,
 291   elf_backend_section_from_shdr,
 292   elf_backend_fake_sections,
 293   elf_backend_section_from_bfd_section,
 294   elf_backend_add_symbol_hook,
 295   elf_backend_link_output_symbol_hook,
 296   elf_backend_create_dynamic_sections,
 297   elf_backend_check_relocs,
 298   elf_backend_adjust_dynamic_symbol,
 299   elf_backend_always_size_sections,
 300   elf_backend_size_dynamic_sections,
 301   elf_backend_relocate_section,
 302   elf_backend_finish_dynamic_symbol,
 303   elf_backend_finish_dynamic_sections,
 304   elf_backend_begin_write_processing,
 305   elf_backend_final_write_processing,
 306   elf_backend_additional_program_headers,
 307   elf_backend_modify_segment_map,
 308   elf_backend_ecoff_debug_swap,
 309   ELF_MACHINE_ALT1,
 310   ELF_MACHINE_ALT2,
 311   &elf_backend_size_info,
 312   elf_backend_want_got_plt,
 313   elf_backend_plt_readonly,
 314   elf_backend_want_plt_sym
 315 };
 316
 317 #ifdef TARGET_BIG_SYM
 318 const bfd_target TARGET_BIG_SYM =
 319 {
 320   /* name: identify kind of target */
 321   TARGET_BIG_NAME,
 322
 323   /* flavour: general indication about file */
 324   bfd_target_elf_flavour,
 325
 326   /* byteorder: data is big endian */
 327   BFD_ENDIAN_BIG,
 328
 329   /* header_byteorder: header is also big endian */
 330   BFD_ENDIAN_BIG,
 331
 332   /* object_flags: mask of all file flags */
 333   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 334    DYNAMIC | WP_TEXT | D_PAGED),
 335
 336   /* section_flags: mask of all section flags */
 337   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 338    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 339
 340    /* leading_symbol_char: is the first char of a user symbol
 341       predictable, and if so what is it */
 342   elf_symbol_leading_char,
 343
 344   /* ar_pad_char: pad character for filenames within an archive header
 345      FIXME:  this really has nothing to do with ELF, this is a characteristic
 346      of the archiver and/or os and should be independently tunable */
 347   '/',
 348
 349   /* ar_max_namelen: maximum number of characters in an archive header
 350      FIXME:  this really has nothing to do with ELF, this is a characteristic
 351      of the archiver and should be independently tunable.  This value is
 352      a WAG (wild a** guess) */
 353   14,
 354
 355   /* Routines to byte-swap various sized integers from the data sections */
 356   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 357     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 358     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 359
 360   /* Routines to byte-swap various sized integers from the file headers */
 361   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 362     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 363     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 364
 365   /* bfd_check_format: check the format of a file being read */
 366   { _bfd_dummy_target,          /* unknown format */
 367     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 368     bfd_elfNN_archive_p,        /* an archive */
 369     bfd_elfNN_core_file_p       /* a core file */
 370   },
 371
 372   /* bfd_set_format: set the format of a file being written */
 373   { bfd_false,
 374     bfd_elfNN_mkobject,
 375     bfd_elfNN_mkarchive,
 376     bfd_false
 377   },
 378
 379   /* bfd_write_contents: write cached information into a file being written */
 380   { bfd_false,
 381     bfd_elfNN_write_object_contents,
 382     bfd_elfNN_write_archive_contents,
 383     bfd_false
 384   },
 385
 386       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 387       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 388       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 389 #ifdef bfd_elfNN_archive_functions
 390       BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
 391 #else
 392       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 393 #endif
 394       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 395       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 396       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 397       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 398       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 399
 400   /* backend_data: */
 401   (PTR) &elfNN_bed,
 402 };
 403 #endif
 404
 405 #ifdef TARGET_LITTLE_SYM
 406 const bfd_target TARGET_LITTLE_SYM =
 407 {
 408   /* name: identify kind of target */
 409   TARGET_LITTLE_NAME,
 410
 411   /* flavour: general indication about file */
 412   bfd_target_elf_flavour,
 413
 414   /* byteorder: data is little endian */
 415   BFD_ENDIAN_LITTLE,
 416
 417   /* header_byteorder: header is also little endian */
 418   BFD_ENDIAN_LITTLE,
 419
 420   /* object_flags: mask of all file flags */
 421   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 422    DYNAMIC | WP_TEXT | D_PAGED),
 423
 424   /* section_flags: mask of all section flags */
 425   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 426    SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
 427
 428    /* leading_symbol_char: is the first char of a user symbol
 429       predictable, and if so what is it */
 430   elf_symbol_leading_char,
 431
 432   /* ar_pad_char: pad character for filenames within an archive header
 433      FIXME:  this really has nothing to do with ELF, this is a characteristic
 434      of the archiver and/or os and should be independently tunable */
 435   '/',
 436
 437   /* ar_max_namelen: maximum number of characters in an archive header
 438      FIXME:  this really has nothing to do with ELF, this is a characteristic
 439      of the archiver and should be independently tunable.  This value is
 440      a WAG (wild a** guess) */
 441   14,
 442
 443   /* Routines to byte-swap various sized integers from the data sections */
 444   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 445     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 446     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 447
 448   /* Routines to byte-swap various sized integers from the file headers */
 449   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 450     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 451     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 452
 453   /* bfd_check_format: check the format of a file being read */
 454   { _bfd_dummy_target,          /* unknown format */
 455     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 456     bfd_elfNN_archive_p,        /* an archive */
 457     bfd_elfNN_core_file_p       /* a core file */
 458   },
 459
 460   /* bfd_set_format: set the format of a file being written */
 461   { bfd_false,
 462     bfd_elfNN_mkobject,
 463     bfd_elfNN_mkarchive,
 464     bfd_false
 465   },
 466
 467   /* bfd_write_contents: write cached information into a file being written */
 468   { bfd_false,
 469     bfd_elfNN_write_object_contents,
 470     bfd_elfNN_write_archive_contents,
 471     bfd_false
 472   },
 473
 474       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 475       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 476       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 477 #ifdef bfd_elfNN_archive_functions
 478       BFD_JUMP_TABLE_ARCHIVE (bfd_elfNN_archive),
 479 #else
 480       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 481 #endif
 482       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 483       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 484       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 485       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 486       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 487
 488   /* backend_data: */
 489   (PTR) &elfNN_bed,
 490 };
 491 #endif