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 libelf.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 #define bfd_elfNN_bfd_debug_info_start  bfd_void
  70 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  71 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  72
  73 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  74 #define bfd_elfNN_bfd_get_relocated_section_contents \
  75  bfd_generic_get_relocated_section_contents
  76 #endif
  77
  78 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  79 #define bfd_elfNN_bfd_make_debug_symbol \
  80   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  81
  82 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  83 #define bfd_elfNN_bfd_copy_private_symbol_data \
  84   ((boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
  85 #endif
  86 #ifndef bfd_elfNN_bfd_copy_private_section_data
  87 #define bfd_elfNN_bfd_copy_private_section_data \
  88   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  89 #endif
  90 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
  91 #define bfd_elfNN_bfd_copy_private_bfd_data \
  92   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  93 #endif
  94 #ifndef bfd_elfNN_bfd_print_private_bfd_data
  95 #define bfd_elfNN_bfd_print_private_bfd_data \
  96   ((boolean (*) PARAMS ((bfd *, void *))) bfd_true)
  97 #endif
  98 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
  99 #define bfd_elfNN_bfd_merge_private_bfd_data \
 100   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
 101 #endif
 102 #ifndef bfd_elfNN_bfd_set_private_flags
 103 #define bfd_elfNN_bfd_set_private_flags \
 104   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
 105 #endif
 106 #ifndef bfd_elfNN_bfd_is_local_label
 107 #define bfd_elfNN_bfd_is_local_label bfd_generic_is_local_label
 108 #endif
 109
 110 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
 111 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
 112   _bfd_nodynamic_get_dynamic_reloc_upper_bound
 113 #endif
 114 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
 115 #define bfd_elfNN_canonicalize_dynamic_reloc \
 116   _bfd_nodynamic_canonicalize_dynamic_reloc
 117 #endif
 118
 119 #ifdef elf_backend_relocate_section
 120 #ifndef bfd_elfNN_bfd_link_hash_table_create
 121 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
 122 #endif
 123 #else /* ! defined (elf_backend_relocate_section) */
 124 /* If no backend relocate_section routine, use the generic linker.  */
 125 #ifndef bfd_elfNN_bfd_link_hash_table_create
 126 #define bfd_elfNN_bfd_link_hash_table_create \
 127   _bfd_generic_link_hash_table_create
 128 #endif
 129 #ifndef bfd_elfNN_bfd_link_add_symbols
 130 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
 131 #endif
 132 #ifndef bfd_elfNN_bfd_final_link
 133 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
 134 #endif
 135 #endif /* ! defined (elf_backend_relocate_section) */
 136 #ifndef bfd_elfNN_bfd_link_split_section
 137 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
 138 #endif
 139
 140 #ifndef elf_info_to_howto_rel
 141 #define elf_info_to_howto_rel 0
 142 #endif
 143
 144 #ifndef ELF_MAXPAGESIZE
 145 #define ELF_MAXPAGESIZE 1
 146 #endif
 147
 148 #ifndef elf_backend_collect
 149 #define elf_backend_collect false
 150 #endif
 151
 152 #ifndef elf_backend_sym_is_global
 153 #define elf_backend_sym_is_global       0
 154 #endif
 155 #ifndef elf_backend_object_p
 156 #define elf_backend_object_p            0
 157 #endif
 158 #ifndef elf_backend_symbol_processing
 159 #define elf_backend_symbol_processing   0
 160 #endif
 161 #ifndef elf_backend_symbol_table_processing
 162 #define elf_backend_symbol_table_processing     0
 163 #endif
 164 #ifndef elf_backend_section_processing
 165 #define elf_backend_section_processing  0
 166 #endif
 167 #ifndef elf_backend_section_from_shdr
 168 #define elf_backend_section_from_shdr   0
 169 #endif
 170 #ifndef elf_backend_fake_sections
 171 #define elf_backend_fake_sections       0
 172 #endif
 173 #ifndef elf_backend_section_from_bfd_section
 174 #define elf_backend_section_from_bfd_section    0
 175 #endif
 176 #ifndef elf_backend_add_symbol_hook
 177 #define elf_backend_add_symbol_hook     0
 178 #endif
 179 #ifndef elf_backend_link_output_symbol_hook
 180 #define elf_backend_link_output_symbol_hook 0
 181 #endif
 182 #ifndef elf_backend_create_dynamic_sections
 183 #define elf_backend_create_dynamic_sections 0
 184 #endif
 185 #ifndef elf_backend_check_relocs
 186 #define elf_backend_check_relocs        0
 187 #endif
 188 #ifndef elf_backend_adjust_dynamic_symbol
 189 #define elf_backend_adjust_dynamic_symbol 0
 190 #endif
 191 #ifndef elf_backend_size_dynamic_sections
 192 #define elf_backend_size_dynamic_sections 0
 193 #endif
 194 #ifndef elf_backend_relocate_section
 195 #define elf_backend_relocate_section    0
 196 #endif
 197 #ifndef elf_backend_finish_dynamic_symbol
 198 #define elf_backend_finish_dynamic_symbol       0
 199 #endif
 200 #ifndef elf_backend_finish_dynamic_sections
 201 #define elf_backend_finish_dynamic_sections     0
 202 #endif
 203 #ifndef elf_backend_begin_write_processing
 204 #define elf_backend_begin_write_processing      0
 205 #endif
 206 #ifndef elf_backend_final_write_processing
 207 #define elf_backend_final_write_processing      0
 208 #endif
 209 #ifndef elf_backend_ecoff_debug_swap
 210 #define elf_backend_ecoff_debug_swap    0
 211 #endif
 212
 213 #ifndef ELF_MACHINE_ALT1
 214 #define ELF_MACHINE_ALT1 0
 215 #endif
 216
 217 #ifndef ELF_MACHINE_ALT2
 218 #define ELF_MACHINE_ALT2 0
 219 #endif
 220
 221 extern const struct elf_size_info _bfd_elfNN_size_info;
 222
 223 static CONST struct elf_backend_data elfNN_bed =
 224 {
 225 #ifdef USE_REL
 226   0,                            /* use_rela_p */
 227 #else
 228   1,                            /* use_rela_p */
 229 #endif
 230   ELF_ARCH,                     /* arch */
 231   ELF_MACHINE_CODE,             /* elf_machine_code */
 232   ELF_MAXPAGESIZE,              /* maxpagesize */
 233   elf_backend_collect,
 234   elf_info_to_howto,
 235   elf_info_to_howto_rel,
 236   elf_backend_sym_is_global,
 237   elf_backend_object_p,
 238   elf_backend_symbol_processing,
 239   elf_backend_symbol_table_processing,
 240   elf_backend_section_processing,
 241   elf_backend_section_from_shdr,
 242   elf_backend_fake_sections,
 243   elf_backend_section_from_bfd_section,
 244   elf_backend_add_symbol_hook,
 245   elf_backend_link_output_symbol_hook,
 246   elf_backend_create_dynamic_sections,
 247   elf_backend_check_relocs,
 248   elf_backend_adjust_dynamic_symbol,
 249   elf_backend_size_dynamic_sections,
 250   elf_backend_relocate_section,
 251   elf_backend_finish_dynamic_symbol,
 252   elf_backend_finish_dynamic_sections,
 253   elf_backend_begin_write_processing,
 254   elf_backend_final_write_processing,
 255   elf_backend_ecoff_debug_swap,
 256   ELF_MACHINE_ALT1,
 257   ELF_MACHINE_ALT2,
 258   &_bfd_elfNN_size_info,
 259   elf_backend_want_got_plt,
 260   elf_backend_plt_readonly,
 261   elf_backend_want_plt_sym,
 262 };
 263
 264 #ifdef TARGET_BIG_SYM
 265 const bfd_target TARGET_BIG_SYM =
 266 {
 267   /* name: identify kind of target */
 268   TARGET_BIG_NAME,
 269
 270   /* flavour: general indication about file */
 271   bfd_target_elf_flavour,
 272
 273   /* byteorder_big_p: data is big endian */
 274   true,
 275
 276   /* header_byteorder_big_p: header is also big endian */
 277   true,
 278
 279   /* object_flags: mask of all file flags */
 280   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 281    DYNAMIC | WP_TEXT | D_PAGED),
 282
 283   /* section_flags: mask of all section flags */
 284   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 285    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 286
 287    /* leading_symbol_char: is the first char of a user symbol
 288       predictable, and if so what is it */
 289    0,
 290
 291   /* ar_pad_char: pad character for filenames within an archive header
 292      FIXME:  this really has nothing to do with ELF, this is a characteristic
 293      of the archiver and/or os and should be independently tunable */
 294   '/',
 295
 296   /* ar_max_namelen: maximum number of characters in an archive header
 297      FIXME:  this really has nothing to do with ELF, this is a characteristic
 298      of the archiver and should be independently tunable.  This value is
 299      a WAG (wild a** guess) */
 300   14,
 301
 302   /* align_power_min: minimum alignment restriction for any section
 303      FIXME:  this value may be target machine dependent */
 304   3,
 305
 306   /* Routines to byte-swap various sized integers from the data sections */
 307   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 308     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 309     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 310
 311   /* Routines to byte-swap various sized integers from the file headers */
 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   /* bfd_check_format: check the format of a file being read */
 317   { _bfd_dummy_target,          /* unknown format */
 318     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 319     bfd_generic_archive_p,      /* an archive */
 320     bfd_elfNN_core_file_p       /* a core file */
 321   },
 322
 323   /* bfd_set_format: set the format of a file being written */
 324   { bfd_false,
 325     bfd_elf_mkobject,
 326     _bfd_generic_mkarchive,
 327     bfd_false
 328   },
 329
 330   /* bfd_write_contents: write cached information into a file being written */
 331   { bfd_false,
 332     bfd_elfNN_write_object_contents,
 333     _bfd_write_archive_contents,
 334     bfd_false
 335   },
 336
 337       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 338       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 339       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 340       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 341       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 342       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 343       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 344       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 345       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 346
 347   /* backend_data: */
 348   (PTR) &elfNN_bed,
 349 };
 350 #endif
 351
 352 #ifdef TARGET_LITTLE_SYM
 353 const bfd_target TARGET_LITTLE_SYM =
 354 {
 355   /* name: identify kind of target */
 356   TARGET_LITTLE_NAME,
 357
 358   /* flavour: general indication about file */
 359   bfd_target_elf_flavour,
 360
 361   /* byteorder_big_p: data is big endian */
 362   false,                /* Nope -- this one's little endian */
 363
 364   /* header_byteorder_big_p: header is also big endian */
 365   false,                /* Nope -- this one's little endian */
 366
 367   /* object_flags: mask of all file flags */
 368   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 369    DYNAMIC | WP_TEXT | D_PAGED),
 370
 371   /* section_flags: mask of all section flags */
 372   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 373    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 374
 375    /* leading_symbol_char: is the first char of a user symbol
 376       predictable, and if so what is it */
 377    0,
 378
 379   /* ar_pad_char: pad character for filenames within an archive header
 380      FIXME:  this really has nothing to do with ELF, this is a characteristic
 381      of the archiver and/or os and should be independently tunable */
 382   '/',
 383
 384   /* ar_max_namelen: maximum number of characters in an archive header
 385      FIXME:  this really has nothing to do with ELF, this is a characteristic
 386      of the archiver and should be independently tunable.  This value is
 387      a WAG (wild a** guess) */
 388   14,
 389
 390   /* align_power_min: minimum alignment restriction for any section
 391      FIXME:  this value may be target machine dependent */
 392   3,
 393
 394   /* Routines to byte-swap various sized integers from the data sections */
 395   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 396     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 397     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 398
 399   /* Routines to byte-swap various sized integers from the file headers */
 400   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 401     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 402     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 403
 404   /* bfd_check_format: check the format of a file being read */
 405   { _bfd_dummy_target,          /* unknown format */
 406     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 407     bfd_generic_archive_p,      /* an archive */
 408     bfd_elfNN_core_file_p       /* a core file */
 409   },
 410
 411   /* bfd_set_format: set the format of a file being written */
 412   { bfd_false,
 413     bfd_elf_mkobject,
 414     _bfd_generic_mkarchive,
 415     bfd_false
 416   },
 417
 418   /* bfd_write_contents: write cached information into a file being written */
 419   { bfd_false,
 420     bfd_elfNN_write_object_contents,
 421     _bfd_write_archive_contents,
 422     bfd_false
 423   },
 424
 425       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 426       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 427       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 428       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 429       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 430       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 431       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 432       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 433       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 434
 435   /* backend_data: */
 436   (PTR) &elfNN_bed,
 437 };
 438 #endif