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., 675 Mass Ave, Cambridge, MA 02139, 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_bfd_debug_info_start  bfd_void
  35 #define bfd_elfNN_bfd_debug_info_end    bfd_void
  36 #define bfd_elfNN_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  37
  38 #ifndef bfd_elfNN_bfd_get_relocated_section_contents
  39 #define bfd_elfNN_bfd_get_relocated_section_contents \
  40  bfd_generic_get_relocated_section_contents
  41 #endif
  42
  43 #define bfd_elfNN_bfd_relax_section bfd_generic_relax_section
  44 #define bfd_elfNN_bfd_make_debug_symbol \
  45   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  46
  47 #ifndef bfd_elfNN_bfd_copy_private_symbol_data
  48 #define bfd_elfNN_bfd_copy_private_symbol_data \
  49   ((boolean (*) PARAMS ((bfd *, asymbol *, bfd *, asymbol *))) bfd_true)
  50 #endif
  51 #ifndef bfd_elfNN_bfd_copy_private_section_data
  52 #define bfd_elfNN_bfd_copy_private_section_data \
  53   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  54 #endif
  55 #ifndef bfd_elfNN_bfd_copy_private_bfd_data
  56 #define bfd_elfNN_bfd_copy_private_bfd_data \
  57   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  58 #endif
  59 #ifndef bfd_elfNN_bfd_merge_private_bfd_data
  60 #define bfd_elfNN_bfd_merge_private_bfd_data \
  61   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  62 #endif
  63 #ifndef bfd_elfNN_bfd_set_private_flags
  64 #define bfd_elfNN_bfd_set_private_flags \
  65   ((boolean (*) PARAMS ((bfd *, flagword))) bfd_true)
  66 #endif
  67 #ifndef bfd_elfNN_bfd_is_local_label
  68 #define bfd_elfNN_bfd_is_local_label bfd_generic_is_local_label
  69 #endif
  70
  71 #ifndef bfd_elfNN_get_dynamic_reloc_upper_bound
  72 #define bfd_elfNN_get_dynamic_reloc_upper_bound \
  73   _bfd_nodynamic_get_dynamic_reloc_upper_bound
  74 #endif
  75 #ifndef bfd_elfNN_canonicalize_dynamic_reloc
  76 #define bfd_elfNN_canonicalize_dynamic_reloc \
  77   _bfd_nodynamic_canonicalize_dynamic_reloc
  78 #endif
  79
  80 #ifdef elf_backend_relocate_section
  81 #ifndef bfd_elfNN_bfd_link_hash_table_create
  82 #define bfd_elfNN_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
  83 #endif
  84 #else /* ! defined (elf_backend_relocate_section) */
  85 /* If no backend relocate_section routine, use the generic linker.  */
  86 #ifndef bfd_elfNN_bfd_link_hash_table_create
  87 #define bfd_elfNN_bfd_link_hash_table_create \
  88   _bfd_generic_link_hash_table_create
  89 #endif
  90 #ifndef bfd_elfNN_bfd_link_add_symbols
  91 #define bfd_elfNN_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  92 #endif
  93 #ifndef bfd_elfNN_bfd_final_link
  94 #define bfd_elfNN_bfd_final_link        _bfd_generic_final_link
  95 #endif
  96 #endif /* ! defined (elf_backend_relocate_section) */
  97 #ifndef bfd_elfNN_bfd_link_split_section
  98 #define bfd_elfNN_bfd_link_split_section _bfd_generic_link_split_section
  99 #endif
 100
 101 #ifndef elf_info_to_howto_rel
 102 #define elf_info_to_howto_rel 0
 103 #endif
 104
 105 #ifndef ELF_MAXPAGESIZE
 106 #define ELF_MAXPAGESIZE 1
 107 #endif
 108
 109 #ifndef elf_backend_collect
 110 #define elf_backend_collect false
 111 #endif
 112
 113 #ifndef elf_backend_sym_is_global
 114 #define elf_backend_sym_is_global       0
 115 #endif
 116 #ifndef elf_backend_object_p
 117 #define elf_backend_object_p            0
 118 #endif
 119 #ifndef elf_backend_symbol_processing
 120 #define elf_backend_symbol_processing   0
 121 #endif
 122 #ifndef elf_backend_symbol_table_processing
 123 #define elf_backend_symbol_table_processing     0
 124 #endif
 125 #ifndef elf_backend_section_processing
 126 #define elf_backend_section_processing  0
 127 #endif
 128 #ifndef elf_backend_section_from_shdr
 129 #define elf_backend_section_from_shdr   0
 130 #endif
 131 #ifndef elf_backend_fake_sections
 132 #define elf_backend_fake_sections       0
 133 #endif
 134 #ifndef elf_backend_section_from_bfd_section
 135 #define elf_backend_section_from_bfd_section    0
 136 #endif
 137 #ifndef elf_backend_add_symbol_hook
 138 #define elf_backend_add_symbol_hook     0
 139 #endif
 140 #ifndef elf_backend_link_output_symbol_hook
 141 #define elf_backend_link_output_symbol_hook 0
 142 #endif
 143 #ifndef elf_backend_create_dynamic_sections
 144 #define elf_backend_create_dynamic_sections 0
 145 #endif
 146 #ifndef elf_backend_check_relocs
 147 #define elf_backend_check_relocs        0
 148 #endif
 149 #ifndef elf_backend_adjust_dynamic_symbol
 150 #define elf_backend_adjust_dynamic_symbol 0
 151 #endif
 152 #ifndef elf_backend_size_dynamic_sections
 153 #define elf_backend_size_dynamic_sections 0
 154 #endif
 155 #ifndef elf_backend_relocate_section
 156 #define elf_backend_relocate_section    0
 157 #endif
 158 #ifndef elf_backend_finish_dynamic_symbol
 159 #define elf_backend_finish_dynamic_symbol       0
 160 #endif
 161 #ifndef elf_backend_finish_dynamic_sections
 162 #define elf_backend_finish_dynamic_sections     0
 163 #endif
 164 #ifndef elf_backend_begin_write_processing
 165 #define elf_backend_begin_write_processing      0
 166 #endif
 167 #ifndef elf_backend_final_write_processing
 168 #define elf_backend_final_write_processing      0
 169 #endif
 170 #ifndef elf_backend_ecoff_debug_swap
 171 #define elf_backend_ecoff_debug_swap    0
 172 #endif
 173
 174 #ifndef ELF_MACHINE_ALT1
 175 #define ELF_MACHINE_ALT1 0
 176 #endif
 177
 178 #ifndef ELF_MACHINE_ALT2
 179 #define ELF_MACHINE_ALT2 0
 180 #endif
 181
 182 static CONST struct elf_backend_data elfNN_bed =
 183 {
 184 #ifdef USE_REL
 185   0,                            /* use_rela_p */
 186 #else
 187   1,                            /* use_rela_p */
 188 #endif
 189   ELF_ARCH,                     /* arch */
 190   ELF_MACHINE_CODE,             /* elf_machine_code */
 191   ELF_MAXPAGESIZE,              /* maxpagesize */
 192   elf_backend_collect,
 193   elf_info_to_howto,
 194   elf_info_to_howto_rel,
 195   elf_backend_sym_is_global,
 196   elf_backend_object_p,
 197   elf_backend_symbol_processing,
 198   elf_backend_symbol_table_processing,
 199   elf_backend_section_processing,
 200   elf_backend_section_from_shdr,
 201   elf_backend_fake_sections,
 202   elf_backend_section_from_bfd_section,
 203   elf_backend_add_symbol_hook,
 204   elf_backend_link_output_symbol_hook,
 205   elf_backend_create_dynamic_sections,
 206   elf_backend_check_relocs,
 207   elf_backend_adjust_dynamic_symbol,
 208   elf_backend_size_dynamic_sections,
 209   elf_backend_relocate_section,
 210   elf_backend_finish_dynamic_symbol,
 211   elf_backend_finish_dynamic_sections,
 212   elf_backend_begin_write_processing,
 213   elf_backend_final_write_processing,
 214   elf_backend_ecoff_debug_swap,
 215   ELF_MACHINE_ALT1,
 216   ELF_MACHINE_ALT2
 217 };
 218
 219 #ifdef TARGET_BIG_SYM
 220 const bfd_target TARGET_BIG_SYM =
 221 {
 222   /* name: identify kind of target */
 223   TARGET_BIG_NAME,
 224
 225   /* flavour: general indication about file */
 226   bfd_target_elf_flavour,
 227
 228   /* byteorder_big_p: data is big endian */
 229   true,
 230
 231   /* header_byteorder_big_p: header is also big endian */
 232   true,
 233
 234   /* object_flags: mask of all file flags */
 235   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 236    DYNAMIC | WP_TEXT | D_PAGED),
 237
 238   /* section_flags: mask of all section flags */
 239   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 240    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 241
 242    /* leading_symbol_char: is the first char of a user symbol
 243       predictable, and if so what is it */
 244    0,
 245
 246   /* ar_pad_char: pad character for filenames within an archive header
 247      FIXME:  this really has nothing to do with ELF, this is a characteristic
 248      of the archiver and/or os and should be independently tunable */
 249   '/',
 250
 251   /* ar_max_namelen: maximum number of characters in an archive header
 252      FIXME:  this really has nothing to do with ELF, this is a characteristic
 253      of the archiver and should be independently tunable.  This value is
 254      a WAG (wild a** guess) */
 255   14,
 256
 257   /* align_power_min: minimum alignment restriction for any section
 258      FIXME:  this value may be target machine dependent */
 259   3,
 260
 261   /* Routines to byte-swap various sized integers from the data sections */
 262   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 263     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 264     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 265
 266   /* Routines to byte-swap various sized integers from the file headers */
 267   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 268     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 269     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 270
 271   /* bfd_check_format: check the format of a file being read */
 272   { _bfd_dummy_target,          /* unknown format */
 273     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 274     bfd_generic_archive_p,      /* an archive */
 275     bfd_elfNN_core_file_p       /* a core file */
 276   },
 277
 278   /* bfd_set_format: set the format of a file being written */
 279   { bfd_false,
 280     bfd_elf_mkobject,
 281     _bfd_generic_mkarchive,
 282     bfd_false
 283   },
 284
 285   /* bfd_write_contents: write cached information into a file being written */
 286   { bfd_false,
 287     bfd_elfNN_write_object_contents,
 288     _bfd_write_archive_contents,
 289     bfd_false
 290   },
 291
 292       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 293       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 294       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 295       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 296       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 297       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 298       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 299       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 300       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 301
 302   /* backend_data: */
 303   (PTR) &elfNN_bed,
 304 };
 305 #endif
 306
 307 #ifdef TARGET_LITTLE_SYM
 308 const bfd_target TARGET_LITTLE_SYM =
 309 {
 310   /* name: identify kind of target */
 311   TARGET_LITTLE_NAME,
 312
 313   /* flavour: general indication about file */
 314   bfd_target_elf_flavour,
 315
 316   /* byteorder_big_p: data is big endian */
 317   false,                /* Nope -- this one's little endian */
 318
 319   /* header_byteorder_big_p: header is also big endian */
 320   false,                /* Nope -- this one's little endian */
 321
 322   /* object_flags: mask of all file flags */
 323   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 324    DYNAMIC | WP_TEXT | D_PAGED),
 325
 326   /* section_flags: mask of all section flags */
 327   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 328    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 329
 330    /* leading_symbol_char: is the first char of a user symbol
 331       predictable, and if so what is it */
 332    0,
 333
 334   /* ar_pad_char: pad character for filenames within an archive header
 335      FIXME:  this really has nothing to do with ELF, this is a characteristic
 336      of the archiver and/or os and should be independently tunable */
 337   '/',
 338
 339   /* ar_max_namelen: maximum number of characters in an archive header
 340      FIXME:  this really has nothing to do with ELF, this is a characteristic
 341      of the archiver and should be independently tunable.  This value is
 342      a WAG (wild a** guess) */
 343   14,
 344
 345   /* align_power_min: minimum alignment restriction for any section
 346      FIXME:  this value may be target machine dependent */
 347   3,
 348
 349   /* Routines to byte-swap various sized integers from the data sections */
 350   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 351     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 352     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 353
 354   /* Routines to byte-swap various sized integers from the file headers */
 355   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 356     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 357     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 358
 359   /* bfd_check_format: check the format of a file being read */
 360   { _bfd_dummy_target,          /* unknown format */
 361     bfd_elfNN_object_p,         /* assembler/linker output (object file) */
 362     bfd_generic_archive_p,      /* an archive */
 363     bfd_elfNN_core_file_p       /* a core file */
 364   },
 365
 366   /* bfd_set_format: set the format of a file being written */
 367   { bfd_false,
 368     bfd_elf_mkobject,
 369     _bfd_generic_mkarchive,
 370     bfd_false
 371   },
 372
 373   /* bfd_write_contents: write cached information into a file being written */
 374   { bfd_false,
 375     bfd_elfNN_write_object_contents,
 376     _bfd_write_archive_contents,
 377     bfd_false
 378   },
 379
 380       BFD_JUMP_TABLE_GENERIC (bfd_elfNN),
 381       BFD_JUMP_TABLE_COPY (bfd_elfNN),
 382       BFD_JUMP_TABLE_CORE (bfd_elfNN),
 383       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 384       BFD_JUMP_TABLE_SYMBOLS (bfd_elfNN),
 385       BFD_JUMP_TABLE_RELOCS (bfd_elfNN),
 386       BFD_JUMP_TABLE_WRITE (bfd_elfNN),
 387       BFD_JUMP_TABLE_LINK (bfd_elfNN),
 388       BFD_JUMP_TABLE_DYNAMIC (bfd_elfNN),
 389
 390   /* backend_data: */
 391   (PTR) &elfNN_bed,
 392 };
 393 #endif