bfd/elf64-target.h

   1 /* Target definitions for 64-bit ELF
   2    Copyright 1993 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_elf64_close_and_cleanup _bfd_generic_close_and_cleanup
  29 #define bfd_elf64_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
  30 #ifndef bfd_elf64_get_section_contents
  31 #define bfd_elf64_get_section_contents _bfd_generic_get_section_contents
  32 #endif
  33
  34 #define bfd_elf64_bfd_debug_info_start  bfd_void
  35 #define bfd_elf64_bfd_debug_info_end    bfd_void
  36 #define bfd_elf64_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  37 #define bfd_elf64_bfd_get_relocated_section_contents \
  38  bfd_generic_get_relocated_section_contents
  39 #define bfd_elf64_bfd_relax_section bfd_generic_relax_section
  40 #define bfd_elf64_bfd_make_debug_symbol \
  41   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  42 #ifndef bfd_elf64_bfd_link_hash_table_create
  43 #define bfd_elf64_bfd_link_hash_table_create \
  44   _bfd_generic_link_hash_table_create
  45 #endif
  46 #ifndef bfd_elf64_bfd_link_add_symbols
  47 #define bfd_elf64_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  48 #endif
  49 #ifndef bfd_elf64_bfd_final_link
  50 #define bfd_elf64_bfd_final_link        _bfd_generic_final_link
  51 #endif
  52
  53 #ifndef bfd_elf64_bfd_copy_private_section_data
  54 #define bfd_elf64_bfd_copy_private_section_data \
  55   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  56 #endif
  57 #ifndef bfd_elf64_bfd_copy_private_bfd_data
  58 #define bfd_elf64_bfd_copy_private_bfd_data \
  59   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  60 #endif
  61 #ifndef bfd_elf64_bfd_is_local_label
  62 #define bfd_elf64_bfd_is_local_label bfd_generic_is_local_label
  63 #endif
  64
  65 #ifndef elf_info_to_howto_rel
  66 #define elf_info_to_howto_rel 0
  67 #endif
  68
  69 #ifndef ELF_MAXPAGESIZE
  70 #define ELF_MAXPAGESIZE 1
  71 #endif
  72
  73 #ifndef elf_backend_sym_is_global
  74 #define elf_backend_sym_is_global       0
  75 #endif
  76 #ifndef elf_backend_object_p
  77 #define elf_backend_object_p            0
  78 #endif
  79 #ifndef elf_backend_symbol_processing
  80 #define elf_backend_symbol_processing   0
  81 #endif
  82 #ifndef elf_backend_symbol_table_processing
  83 #define elf_backend_symbol_table_processing     0
  84 #endif
  85 #ifndef elf_backend_section_processing
  86 #define elf_backend_section_processing  0
  87 #endif
  88 #ifndef elf_backend_section_from_shdr
  89 #define elf_backend_section_from_shdr   0
  90 #endif
  91 #ifndef elf_backend_fake_sections
  92 #define elf_backend_fake_sections       0
  93 #endif
  94 #ifndef elf_backend_section_from_bfd_section
  95 #define elf_backend_section_from_bfd_section    0
  96 #endif
  97 #ifndef elf_backend_final_write_processing
  98 #define elf_backend_final_write_processing      0
  99 #endif
 100 #ifndef elf_backend_ecoff_debug_swap
 101 #define elf_backend_ecoff_debug_swap    0
 102 #endif
 103
 104 static CONST struct elf_backend_data elf64_bed =
 105 {
 106 #ifdef USE_REL
 107   0,                            /* use_rela_p */
 108 #else
 109   1,                            /* use_rela_p */
 110 #endif
 111   1,                            /* elf_64_p */
 112   ELF_ARCH,                     /* arch */
 113   ELF_MACHINE_CODE,             /* elf_machine_code */
 114   ELF_MAXPAGESIZE,              /* maxpagesize */
 115   elf_info_to_howto,
 116   elf_info_to_howto_rel,
 117   elf_backend_sym_is_global,
 118   elf_backend_object_p,
 119   elf_backend_symbol_processing,
 120   elf_backend_symbol_table_processing,
 121   elf_backend_section_processing,
 122   elf_backend_section_from_shdr,
 123   elf_backend_fake_sections,
 124   elf_backend_section_from_bfd_section,
 125   elf_backend_ecoff_debug_swap
 126 };
 127
 128 #ifdef TARGET_BIG_SYM
 129 bfd_target TARGET_BIG_SYM =
 130 {
 131   /* name: identify kind of target */
 132   TARGET_BIG_NAME,
 133
 134   /* flavour: general indication about file */
 135   bfd_target_elf_flavour,
 136
 137   /* byteorder_big_p: data is big endian */
 138   true,
 139
 140   /* header_byteorder_big_p: header is also big endian */
 141   true,
 142
 143   /* object_flags: mask of all file flags */
 144   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 145    DYNAMIC | WP_TEXT),
 146
 147   /* section_flags: mask of all section flags */
 148   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 149    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 150
 151    /* leading_symbol_char: is the first char of a user symbol
 152       predictable, and if so what is it */
 153    0,
 154
 155   /* ar_pad_char: pad character for filenames within an archive header
 156      FIXME:  this really has nothing to do with ELF, this is a characteristic
 157      of the archiver and/or os and should be independently tunable */
 158   '/',
 159
 160   /* ar_max_namelen: maximum number of characters in an archive header
 161      FIXME:  this really has nothing to do with ELF, this is a characteristic
 162      of the archiver and should be independently tunable.  This value is
 163      a WAG (wild a** guess) */
 164   15,
 165
 166   /* align_power_min: minimum alignment restriction for any section
 167      FIXME:  this value may be target machine dependent */
 168   3,
 169
 170   /* Routines to byte-swap various sized integers from the data sections */
 171   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 172     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 173     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 174
 175   /* Routines to byte-swap various sized integers from the file headers */
 176   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 177     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 178     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 179
 180   /* bfd_check_format: check the format of a file being read */
 181   { _bfd_dummy_target,          /* unknown format */
 182     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 183     bfd_generic_archive_p,      /* an archive */
 184     bfd_elf64_core_file_p       /* a core file */
 185   },
 186
 187   /* bfd_set_format: set the format of a file being written */
 188   { bfd_false,
 189     bfd_elf_mkobject,
 190     _bfd_generic_mkarchive,
 191     bfd_false
 192   },
 193
 194   /* bfd_write_contents: write cached information into a file being written */
 195   { bfd_false,
 196     bfd_elf64_write_object_contents,
 197     _bfd_write_archive_contents,
 198     bfd_false
 199   },
 200
 201       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 202       BFD_JUMP_TABLE_COPY (bfd_elf64),
 203       BFD_JUMP_TABLE_CORE (bfd_elf64),
 204       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 205       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 206       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 207       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 208       BFD_JUMP_TABLE_LINK (bfd_elf64),
 209
 210   /* backend_data: */
 211   (PTR) &elf64_bed,
 212 };
 213 #endif
 214
 215 #ifdef TARGET_LITTLE_SYM
 216 bfd_target TARGET_LITTLE_SYM =
 217 {
 218   /* name: identify kind of target */
 219   TARGET_LITTLE_NAME,
 220
 221   /* flavour: general indication about file */
 222   bfd_target_elf_flavour,
 223
 224   /* byteorder_big_p: data is big endian */
 225   false,                /* Nope -- this one's little endian */
 226
 227   /* header_byteorder_big_p: header is also big endian */
 228   false,                /* Nope -- this one's little endian */
 229
 230   /* object_flags: mask of all file flags */
 231   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 232    DYNAMIC | WP_TEXT),
 233
 234   /* section_flags: mask of all section flags */
 235   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 236    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 237
 238    /* leading_symbol_char: is the first char of a user symbol
 239       predictable, and if so what is it */
 240    0,
 241
 242   /* ar_pad_char: pad character for filenames within an archive header
 243      FIXME:  this really has nothing to do with ELF, this is a characteristic
 244      of the archiver and/or os and should be independently tunable */
 245   '/',
 246
 247   /* ar_max_namelen: maximum number of characters in an archive header
 248      FIXME:  this really has nothing to do with ELF, this is a characteristic
 249      of the archiver and should be independently tunable.  This value is
 250      a WAG (wild a** guess) */
 251   15,
 252
 253   /* align_power_min: minimum alignment restriction for any section
 254      FIXME:  this value may be target machine dependent */
 255   3,
 256
 257   /* Routines to byte-swap various sized integers from the data sections */
 258   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 259     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 260     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 261
 262   /* Routines to byte-swap various sized integers from the file headers */
 263   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 264     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 265     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 266
 267   /* bfd_check_format: check the format of a file being read */
 268   { _bfd_dummy_target,          /* unknown format */
 269     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 270     bfd_generic_archive_p,      /* an archive */
 271     bfd_elf64_core_file_p       /* a core file */
 272   },
 273
 274   /* bfd_set_format: set the format of a file being written */
 275   { bfd_false,
 276     bfd_elf_mkobject,
 277     _bfd_generic_mkarchive,
 278     bfd_false
 279   },
 280
 281   /* bfd_write_contents: write cached information into a file being written */
 282   { bfd_false,
 283     bfd_elf64_write_object_contents,
 284     _bfd_write_archive_contents,
 285     bfd_false
 286   },
 287
 288       BFD_JUMP_TABLE_GENERIC (bfd_elf64),
 289       BFD_JUMP_TABLE_COPY (bfd_elf64),
 290       BFD_JUMP_TABLE_CORE (bfd_elf64),
 291       BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 292       BFD_JUMP_TABLE_SYMBOLS (bfd_elf64),
 293       BFD_JUMP_TABLE_RELOCS (bfd_elf64),
 294       BFD_JUMP_TABLE_WRITE (bfd_elf64),
 295       BFD_JUMP_TABLE_LINK (bfd_elf64),
 296
 297   /* backend_data: */
 298   (PTR) &elf64_bed,
 299 };
 300 #endif