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 /* Archives are generic or unimplemented.  */
  29 #ifndef bfd_elf64_slurp_armap
  30 #define bfd_elf64_slurp_armap           bfd_slurp_coff_armap
  31 #endif
  32 #define bfd_elf64_slurp_extended_name_table     _bfd_slurp_extended_name_table
  33 #define bfd_elf64_truncate_arname               bfd_dont_truncate_arname
  34 #define bfd_elf64_openr_next_archived_file      bfd_generic_openr_next_archived_file
  35 #define bfd_elf64_generic_stat_arch_elt bfd_generic_stat_arch_elt
  36 #ifndef bfd_elf64_write_armap
  37 #define bfd_elf64_write_armap           coff_write_armap
  38 #endif
  39
  40 /* Ordinary section reading and writing */
  41 #define bfd_elf64_get_section_contents  bfd_generic_get_section_contents
  42 #define bfd_elf64_close_and_cleanup             bfd_generic_close_and_cleanup
  43
  44 #define bfd_elf64_bfd_debug_info_start  bfd_void
  45 #define bfd_elf64_bfd_debug_info_end    bfd_void
  46 #define bfd_elf64_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  47 #define bfd_elf64_bfd_get_relocated_section_contents \
  48  bfd_generic_get_relocated_section_contents
  49 #define bfd_elf64_bfd_relax_section bfd_generic_relax_section
  50 #define bfd_elf64_bfd_make_debug_symbol \
  51   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  52 #ifndef bfd_elf64_bfd_link_hash_table_create
  53 #define bfd_elf64_bfd_link_hash_table_create \
  54   _bfd_generic_link_hash_table_create
  55 #endif
  56 #ifndef bfd_elf64_bfd_link_add_symbols
  57 #define bfd_elf64_bfd_link_add_symbols  _bfd_generic_link_add_symbols
  58 #endif
  59 #ifndef bfd_elf64_bfd_final_link
  60 #define bfd_elf64_bfd_final_link        _bfd_generic_final_link
  61 #endif
  62
  63 #ifndef bfd_elf64_bfd_copy_private_section_data
  64 #define bfd_elf64_bfd_copy_private_section_data \
  65   ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true)
  66 #endif
  67 #ifndef bfd_elf64_bfd_copy_private_bfd_data
  68 #define bfd_elf64_bfd_copy_private_bfd_data \
  69   ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true)
  70 #endif
  71 #ifndef bfd_elf64_bfd_is_local_label
  72 #define bfd_elf64_bfd_is_local_label bfd_generic_is_local_label
  73 #endif
  74 #ifndef bfd_elf64_bfd_free_cached_info
  75 #define bfd_elf64_bfd_free_cached_info bfd_true
  76 #endif
  77
  78 #ifndef elf_info_to_howto_rel
  79 #define elf_info_to_howto_rel 0
  80 #endif
  81
  82 #ifndef ELF_MAXPAGESIZE
  83 #define ELF_MAXPAGESIZE 1
  84 #endif
  85
  86 #ifndef elf_backend_sym_is_global
  87 #define elf_backend_sym_is_global       0
  88 #endif
  89 #ifndef elf_backend_object_p
  90 #define elf_backend_object_p            0
  91 #endif
  92 #ifndef elf_backend_symbol_processing
  93 #define elf_backend_symbol_processing   0
  94 #endif
  95 #ifndef elf_backend_symbol_table_processing
  96 #define elf_backend_symbol_table_processing     0
  97 #endif
  98 #ifndef elf_backend_section_processing
  99 #define elf_backend_section_processing  0
 100 #endif
 101 #ifndef elf_backend_section_from_shdr
 102 #define elf_backend_section_from_shdr   0
 103 #endif
 104 #ifndef elf_backend_fake_sections
 105 #define elf_backend_fake_sections       0
 106 #endif
 107 #ifndef elf_backend_section_from_bfd_section
 108 #define elf_backend_section_from_bfd_section    0
 109 #endif
 110 #ifndef elf_backend_final_write_processing
 111 #define elf_backend_final_write_processing      0
 112 #endif
 113 #ifndef elf_backend_ecoff_debug_swap
 114 #define elf_backend_ecoff_debug_swap    0
 115 #endif
 116
 117 static CONST struct elf_backend_data elf64_bed =
 118 {
 119 #ifdef USE_REL
 120   0,                            /* use_rela_p */
 121 #else
 122   1,                            /* use_rela_p */
 123 #endif
 124   1,                            /* elf_64_p */
 125   ELF_ARCH,                     /* arch */
 126   ELF_MACHINE_CODE,             /* elf_machine_code */
 127   ELF_MAXPAGESIZE,              /* maxpagesize */
 128   elf_info_to_howto,
 129   elf_info_to_howto_rel,
 130   elf_backend_sym_is_global,
 131   elf_backend_object_p,
 132   elf_backend_symbol_processing,
 133   elf_backend_symbol_table_processing,
 134   elf_backend_section_processing,
 135   elf_backend_section_from_shdr,
 136   elf_backend_fake_sections,
 137   elf_backend_section_from_bfd_section,
 138   elf_backend_ecoff_debug_swap
 139 };
 140
 141 #ifdef TARGET_BIG_SYM
 142 bfd_target TARGET_BIG_SYM =
 143 {
 144   /* name: identify kind of target */
 145   TARGET_BIG_NAME,
 146
 147   /* flavour: general indication about file */
 148   bfd_target_elf_flavour,
 149
 150   /* byteorder_big_p: data is big endian */
 151   true,
 152
 153   /* header_byteorder_big_p: header is also big endian */
 154   true,
 155
 156   /* object_flags: mask of all file flags */
 157   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 158    DYNAMIC | WP_TEXT),
 159
 160   /* section_flags: mask of all section flags */
 161   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 162    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 163
 164    /* leading_symbol_char: is the first char of a user symbol
 165       predictable, and if so what is it */
 166    0,
 167
 168   /* ar_pad_char: pad character for filenames within an archive header
 169      FIXME:  this really has nothing to do with ELF, this is a characteristic
 170      of the archiver and/or os and should be independently tunable */
 171   '/',
 172
 173   /* ar_max_namelen: maximum number of characters in an archive header
 174      FIXME:  this really has nothing to do with ELF, this is a characteristic
 175      of the archiver and should be independently tunable.  This value is
 176      a WAG (wild a** guess) */
 177   15,
 178
 179   /* align_power_min: minimum alignment restriction for any section
 180      FIXME:  this value may be target machine dependent */
 181   3,
 182
 183   /* Routines to byte-swap various sized integers from the data sections */
 184   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 185     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 186     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 187
 188   /* Routines to byte-swap various sized integers from the file headers */
 189   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 190     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 191     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 192
 193   /* bfd_check_format: check the format of a file being read */
 194   { _bfd_dummy_target,          /* unknown format */
 195     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 196     bfd_generic_archive_p,      /* an archive */
 197     bfd_elf64_core_file_p       /* a core file */
 198   },
 199
 200   /* bfd_set_format: set the format of a file being written */
 201   { bfd_false,
 202     bfd_elf_mkobject,
 203     _bfd_generic_mkarchive,
 204     bfd_false
 205   },
 206
 207   /* bfd_write_contents: write cached information into a file being written */
 208   { bfd_false,
 209     bfd_elf64_write_object_contents,
 210     _bfd_write_archive_contents,
 211     bfd_false
 212   },
 213
 214   /* Initialize a jump table with the standard macro.  All names start with
 215      "elf" */
 216   JUMP_TABLE(bfd_elf64),
 217
 218   /* backend_data: */
 219   (PTR) &elf64_bed,
 220 };
 221 #endif
 222
 223 #ifdef TARGET_LITTLE_SYM
 224 bfd_target TARGET_LITTLE_SYM =
 225 {
 226   /* name: identify kind of target */
 227   TARGET_LITTLE_NAME,
 228
 229   /* flavour: general indication about file */
 230   bfd_target_elf_flavour,
 231
 232   /* byteorder_big_p: data is big endian */
 233   false,                /* Nope -- this one's little endian */
 234
 235   /* header_byteorder_big_p: header is also big endian */
 236   false,                /* Nope -- this one's little endian */
 237
 238   /* object_flags: mask of all file flags */
 239   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 240    DYNAMIC | WP_TEXT),
 241
 242   /* section_flags: mask of all section flags */
 243   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 244    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 245
 246    /* leading_symbol_char: is the first char of a user symbol
 247       predictable, and if so what is it */
 248    0,
 249
 250   /* ar_pad_char: pad character for filenames within an archive header
 251      FIXME:  this really has nothing to do with ELF, this is a characteristic
 252      of the archiver and/or os and should be independently tunable */
 253   '/',
 254
 255   /* ar_max_namelen: maximum number of characters in an archive header
 256      FIXME:  this really has nothing to do with ELF, this is a characteristic
 257      of the archiver and should be independently tunable.  This value is
 258      a WAG (wild a** guess) */
 259   15,
 260
 261   /* align_power_min: minimum alignment restriction for any section
 262      FIXME:  this value may be target machine dependent */
 263   3,
 264
 265   /* Routines to byte-swap various sized integers from the data sections */
 266   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 267     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 268     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 269
 270   /* Routines to byte-swap various sized integers from the file headers */
 271   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 272     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 273     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 274
 275   /* bfd_check_format: check the format of a file being read */
 276   { _bfd_dummy_target,          /* unknown format */
 277     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 278     bfd_generic_archive_p,      /* an archive */
 279     bfd_elf64_core_file_p       /* a core file */
 280   },
 281
 282   /* bfd_set_format: set the format of a file being written */
 283   { bfd_false,
 284     bfd_elf_mkobject,
 285     _bfd_generic_mkarchive,
 286     bfd_false
 287   },
 288
 289   /* bfd_write_contents: write cached information into a file being written */
 290   { bfd_false,
 291     bfd_elf64_write_object_contents,
 292     _bfd_write_archive_contents,
 293     bfd_false
 294   },
 295
 296   /* Initialize a jump table with the standard macro.  All names start with
 297      "elf" */
 298   JUMP_TABLE(bfd_elf64),
 299
 300   /* backend_data: */
 301   (PTR) &elf64_bed,
 302 };
 303 #endif