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 #ifndef elf_backend_want_got_plt
  60 #define elf_backend_want_got_plt 0
  61 #endif
  62 #ifndef elf_backend_plt_readonly
  63 #define elf_backend_plt_readonly 0
  64 #endif
  65 #ifndef elf_backend_want_plt_sym
  66 #define elf_backend_want_plt_sym 0
  67 #endif
  68
  69 #ifndef elf_backend_want_hdr_in_seg
  70 #define elf_backend_want_hdr_in_seg 0
  71 #endif
  72
  73 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  74 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  75 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  76
  77 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  78 #define bfd_elfNN_bfd_get_relocated_section_contents \
  79  bfd_generic_get_relocated_section_contents
  80 #endif
  81
  82 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  83 #define bfd_elfNN_bfd_make_debug_symbol \
  84   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  85
  86 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  87 #define bfd_elfNN_bfd_copy_private_symbol_data \
  88   ((boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
  89 #endif
  90 #ifndef bfd_elfNN_bfd_copy_private_section_data
  91 #define bfd_elfNN_bfd_copy_private_section_data \
  92   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  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   ((boolean (*) PARAMS ((bfd *, void *))) bfd_true)
 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_info_to_howto_rel
 145 #define elf_info_to_howto_rel 0
 146 #endif
 147
 148 #ifndef ELF_MAXPAGESIZE
 149 #define ELF_MAXPAGESIZE 1
 150 #endif
 151
 152 #ifndef elf_backend_collect
 153 #define elf_backend_collect false
 154 #endif
 155
 156 #ifndef elf_backend_sym_is_global
 157 #define elf_backend_sym_is_global       0
 158 #endif
 159 #ifndef elf_backend_object_p
 160 #define elf_backend_object_p            0
 161 #endif
 162 #ifndef elf_backend_symbol_processing
 163 #define elf_backend_symbol_processing   0
 164 #endif
 165 #ifndef elf_backend_symbol_table_processing
 166 #define elf_backend_symbol_table_processing     0
 167 #endif
 168 #ifndef elf_backend_section_processing
 169 #define elf_backend_section_processing  0
 170 #endif
 171 #ifndef elf_backend_section_from_shdr
 172 #define elf_backend_section_from_shdr   0
 173 #endif
 174 #ifndef elf_backend_fake_sections
 175 #define elf_backend_fake_sections       0
 176 #endif
 177 #ifndef elf_backend_section_from_bfd_section
 178 #define elf_backend_section_from_bfd_section    0
 179 #endif
 180 #ifndef elf_backend_add_symbol_hook
 181 #define elf_backend_add_symbol_hook     0
 182 #endif
 183 #ifndef elf_backend_link_output_symbol_hook
 184 #define elf_backend_link_output_symbol_hook 0
 185 #endif
 186 #ifndef elf_backend_create_dynamic_sections
 187 #define elf_backend_create_dynamic_sections 0
 188 #endif
 189 #ifndef elf_backend_check_relocs
 190 #define elf_backend_check_relocs        0
 191 #endif
 192 #ifndef elf_backend_adjust_dynamic_symbol
 193 #define elf_backend_adjust_dynamic_symbol 0
 194 #endif
 195 #ifndef elf_backend_size_dynamic_sections
 196 #define elf_backend_size_dynamic_sections 0
 197 #endif
 198 #ifndef elf_backend_relocate_section
 199 #define elf_backend_relocate_section    0
 200 #endif
 201 #ifndef elf_backend_finish_dynamic_symbol
 202 #define elf_backend_finish_dynamic_symbol       0
 203 #endif
 204 #ifndef elf_backend_finish_dynamic_sections
 205 #define elf_backend_finish_dynamic_sections     0
 206 #endif
 207 #ifndef elf_backend_begin_write_processing
 208 #define elf_backend_begin_write_processing      0
 209 #endif
 210 #ifndef elf_backend_final_write_processing
 211 #define elf_backend_final_write_processing      0
 212 #endif
 213 #ifndef elf_backend_create_program_headers
 214 #define elf_backend_create_program_headers      0
 215 #endif
 216 #ifndef elf_backend_ecoff_debug_swap
 217 #define elf_backend_ecoff_debug_swap    0
 218 #endif
 219
 220 #ifndef ELF_MACHINE_ALT1
 221 #define ELF_MACHINE_ALT1 0
 222 #endif
 223
 224 #ifndef ELF_MACHINE_ALT2
 225 #define ELF_MACHINE_ALT2 0
 226 #endif
 227
 228 extern const struct elf_size_info _bfd_elfNN_size_info;
 229
 230 static CONST struct elf_backend_data elfNN_bed =
 231 {
 232 #ifdef USE_REL
 233   0,                            /* use_rela_p */
 234 #else
 235   1,                            /* use_rela_p */
 236 #endif
 237   ELF_ARCH,                     /* arch */
 238   ELF_MACHINE_CODE,             /* elf_machine_code */
 239   ELF_MAXPAGESIZE,              /* maxpagesize */
 240   elf_backend_collect,
 241   elf_info_to_howto,
 242   elf_info_to_howto_rel,
 243   elf_backend_sym_is_global,
 244   elf_backend_object_p,
 245   elf_backend_symbol_processing,
 246   elf_backend_symbol_table_processing,
 247   elf_backend_section_processing,
 248   elf_backend_section_from_shdr,
 249   elf_backend_fake_sections,
 250   elf_backend_section_from_bfd_section,
 251   elf_backend_add_symbol_hook,
 252   elf_backend_link_output_symbol_hook,
 253   elf_backend_create_dynamic_sections,
 254   elf_backend_check_relocs,
 255   elf_backend_adjust_dynamic_symbol,
 256   elf_backend_size_dynamic_sections,
 257   elf_backend_relocate_section,
 258   elf_backend_finish_dynamic_symbol,
 259   elf_backend_finish_dynamic_sections,
 260   elf_backend_begin_write_processing,
 261   elf_backend_final_write_processing,
 262   elf_backend_create_program_headers,
 263   elf_backend_ecoff_debug_swap,
 264   ELF_MACHINE_ALT1,
 265   ELF_MACHINE_ALT2,
 266   &_bfd_elfNN_size_info,
 267   elf_backend_want_got_plt,
 268   elf_backend_plt_readonly,
 269   elf_backend_want_plt_sym,
 270   elf_backend_want_hdr_in_seg,
 271 };
 272
 273 #ifdef TARGET_BIG_SYM
 274 const bfd_target TARGET_BIG_SYM =
 275 {
 276   /* name: identify kind of target */
 277   TARGET_BIG_NAME,
 278
 279   /* flavour: general indication about file */
 280   bfd_target_elf_flavour,
 281
 282   /* byteorder_big_p: data is big endian */
 283   true,
 284
 285   /* header_byteorder_big_p: header is also big endian */
 286   true,
 287
 288   /* object_flags: mask of all file flags */
 289   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 290    DYNAMIC | WP_TEXT | D_PAGED),
 291
 292   /* section_flags: mask of all section flags */
 293   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 294    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 295
 296    /* leading_symbol_char: is the first char of a user symbol
 297       predictable, and if so what is it */
 298    0,
 299
 300   /* ar_pad_char: pad character for filenames within an archive header
 301      FIXME:  this really has nothing to do with ELF, this is a characteristic
 302      of the archiver and/or os and should be independently tunable */
 303   '/',
 304
 305   /* ar_max_namelen: maximum number of characters in an archive header
 306      FIXME:  this really has nothing to do with ELF, this is a characteristic
 307      of the archiver and should be independently tunable.  This value is
 308      a WAG (wild a** guess) */
 309   14,
 310
 311   /* Routines to byte-swap various sized integers from the data sections */
 312   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 313     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 314     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 315
 316   /* Routines to byte-swap various sized integers from the file headers */
 317   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 318     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 319     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 320
 321   /* bfd_check_format: check the format of a file being read */
 322   { _bfd_dummy_target,          /* unknown format */
 323     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 324     bfd_generic_archive_p,      /* an archive */
 325     bfd_elfNN_core_file_p       /* a core file */
 326   },
 327
 328   /* bfd_set_format: set the format of a file being written */
 329   { bfd_false,
 330     bfd_elf_mkobject,
 331     _bfd_generic_mkarchive,
 332     bfd_false
 333   },
 334
 335   /* bfd_write_contents: write cached information into a file being written */
 336   { bfd_false,
 337     bfd_elfNN_write_object_contents,
 338     _bfd_write_archive_contents,
 339     bfd_false
 340   },
 341
 342       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 343       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 344       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 345       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 346       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 347       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 348       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 349       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 350       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 351
 352   /* backend_data: */
 353   (PTR) &elfNN_bed,
 354 };
 355 #endif
 356
 357 #ifdef TARGET_LITTLE_SYM
 358 const bfd_target TARGET_LITTLE_SYM =
 359 {
 360   /* name: identify kind of target */
 361   TARGET_LITTLE_NAME,
 362
 363   /* flavour: general indication about file */
 364   bfd_target_elf_flavour,
 365
 366   /* byteorder_big_p: data is big endian */
 367   false,                /* Nope -- this one's little endian */
 368
 369   /* header_byteorder_big_p: header is also big endian */
 370   false,                /* Nope -- this one's little endian */
 371
 372   /* object_flags: mask of all file flags */
 373   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 374    DYNAMIC | WP_TEXT | D_PAGED),
 375
 376   /* section_flags: mask of all section flags */
 377   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 378    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 379
 380    /* leading_symbol_char: is the first char of a user symbol
 381       predictable, and if so what is it */
 382    0,
 383
 384   /* ar_pad_char: pad character for filenames within an archive header
 385      FIXME:  this really has nothing to do with ELF, this is a characteristic
 386      of the archiver and/or os and should be independently tunable */
 387   '/',
 388
 389   /* ar_max_namelen: maximum number of characters in an archive header
 390      FIXME:  this really has nothing to do with ELF, this is a characteristic
 391      of the archiver and should be independently tunable.  This value is
 392      a WAG (wild a** guess) */
 393   14,
 394
 395   /* Routines to byte-swap various sized integers from the data sections */
 396   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 397     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 398     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 399
 400   /* Routines to byte-swap various sized integers from the file headers */
 401   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 402     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 403     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 404
 405   /* bfd_check_format: check the format of a file being read */
 406   { _bfd_dummy_target,          /* unknown format */
 407     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 408     bfd_generic_archive_p,      /* an archive */
 409     bfd_elfNN_core_file_p       /* a core file */
 410   },
 411
 412   /* bfd_set_format: set the format of a file being written */
 413   { bfd_false,
 414     bfd_elf_mkobject,
 415     _bfd_generic_mkarchive,
 416     bfd_false
 417   },
 418
 419   /* bfd_write_contents: write cached information into a file being written */
 420   { bfd_false,
 421     bfd_elfNN_write_object_contents,
 422     _bfd_write_archive_contents,
 423     bfd_false
 424   },
 425
 426       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 427       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 428       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 429       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 430       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 431       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 432       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 433       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 434       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 435
 436   /* backend_data: */
 437   (PTR) &elfNN_bed,
 438 };
 439 #endif