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