bfd/elf32-target.h

   1 /* Target definitions for 32-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_elf32_slurp_armap
  30 #define bfd_elf32_slurp_armap           bfd_slurp_coff_armap
  31 #endif
  32 #define bfd_elf32_slurp_extended_name_table     _bfd_slurp_extended_name_table
  33 #define bfd_elf32_truncate_arname               bfd_dont_truncate_arname
  34 #define bfd_elf32_openr_next_archived_file      bfd_generic_openr_next_archived_file
  35 #define bfd_elf32_generic_stat_arch_elt bfd_generic_stat_arch_elt
  36 #ifndef bfd_elf32_write_armap
  37 #define bfd_elf32_write_armap           coff_write_armap
  38 #endif
  39
  40 /* Ordinary section reading and writing */
  41 #define bfd_elf32_get_section_contents  bfd_generic_get_section_contents
  42 #define bfd_elf32_close_and_cleanup             bfd_generic_close_and_cleanup
  43
  44 #define bfd_elf32_bfd_debug_info_start  bfd_void
  45 #define bfd_elf32_bfd_debug_info_end    bfd_void
  46 #define bfd_elf32_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  47 #define bfd_elf32_bfd_get_relocated_section_contents \
  48  bfd_generic_get_relocated_section_contents
  49 #define bfd_elf32_bfd_relax_section bfd_generic_relax_section
  50 #define bfd_elf32_bfd_seclet_link bfd_generic_seclet_link
  51 #define bfd_elf32_bfd_make_debug_symbol \
  52   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  53
  54 static CONST struct elf_backend_data elf32_bed =
  55 {
  56 #ifdef USE_REL
  57   0,                            /* use_rela_p */
  58 #else
  59   1,                            /* use_rela_p */
  60 #endif
  61   0,                            /* elf_64_p */
  62   ELF_ARCH,                     /* arch */
  63   elf_info_to_howto,            /* elf_info_to_howto */
  64 #ifdef elf_info_to_howto_rel
  65   elf_info_to_howto_rel,        /* elf_info_to_howto_rel */
  66 #else
  67   0,                            /* elf_info_to_howto_rel */
  68 #endif
  69 };
  70
  71 #ifdef TARGET_BIG_SYM
  72 bfd_target TARGET_BIG_SYM =
  73 {
  74   /* name: identify kind of target */
  75   TARGET_BIG_NAME,
  76
  77   /* flavour: general indication about file */
  78   bfd_target_elf_flavour,
  79
  80   /* byteorder_big_p: data is big endian */
  81   true,
  82
  83   /* header_byteorder_big_p: header is also big endian */
  84   true,
  85
  86   /* object_flags: mask of all file flags */
  87   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
  88    DYNAMIC | WP_TEXT),
  89
  90   /* section_flags: mask of all section flags */
  91   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
  92    SEC_CODE | SEC_DATA),
  93
  94    /* leading_symbol_char: is the first char of a user symbol
  95       predictable, and if so what is it */
  96    0,
  97
  98   /* ar_pad_char: pad character for filenames within an archive header
  99      FIXME:  this really has nothing to do with ELF, this is a characteristic
 100      of the archiver and/or os and should be independently tunable */
 101   '/',
 102
 103   /* ar_max_namelen: maximum number of characters in an archive header
 104      FIXME:  this really has nothing to do with ELF, this is a characteristic
 105      of the archiver and should be independently tunable.  This value is
 106      a WAG (wild a** guess) */
 107   15,
 108
 109   /* align_power_min: minimum alignment restriction for any section
 110      FIXME:  this value may be target machine dependent */
 111   3,
 112
 113   /* Routines to byte-swap various sized integers from the data sections */
 114   _do_getb64, _do_getb_signed_64, _do_putb64,
 115     _do_getb32, _do_getb_signed_32, _do_putb32,
 116     _do_getb16, _do_getb_signed_16, _do_putb16,
 117
 118   /* Routines to byte-swap various sized integers from the file headers */
 119   _do_getb64, _do_getb_signed_64, _do_putb64,
 120     _do_getb32, _do_getb_signed_32, _do_putb32,
 121     _do_getb16, _do_getb_signed_16, _do_putb16,
 122
 123   /* bfd_check_format: check the format of a file being read */
 124   { _bfd_dummy_target,          /* unknown format */
 125     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 126     bfd_generic_archive_p,      /* an archive */
 127     bfd_elf32_core_file_p       /* a core file */
 128   },
 129
 130   /* bfd_set_format: set the format of a file being written */
 131   { bfd_false,
 132     bfd_elf32_mkobject,
 133     _bfd_generic_mkarchive,
 134     bfd_false
 135   },
 136
 137   /* bfd_write_contents: write cached information into a file being written */
 138   { bfd_false,
 139     bfd_elf32_write_object_contents,
 140     _bfd_write_archive_contents,
 141     bfd_false
 142   },
 143
 144   /* Initialize a jump table with the standard macro.  All names start with
 145      "elf" */
 146   JUMP_TABLE(bfd_elf32),
 147
 148   /* backend_data: */
 149   (PTR) &elf32_bed,
 150 };
 151 #endif
 152
 153 #ifdef TARGET_LITTLE_SYM
 154 bfd_target TARGET_LITTLE_SYM =
 155 {
 156   /* name: identify kind of target */
 157   TARGET_LITTLE_NAME,
 158
 159   /* flavour: general indication about file */
 160   bfd_target_elf_flavour,
 161
 162   /* byteorder_big_p: data is big endian */
 163   false,                /* Nope -- this one's little endian */
 164
 165   /* header_byteorder_big_p: header is also big endian */
 166   false,                /* Nope -- this one's little endian */
 167
 168   /* object_flags: mask of all file flags */
 169   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 170    DYNAMIC | WP_TEXT),
 171
 172   /* section_flags: mask of all section flags */
 173   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 174    SEC_DATA),
 175
 176    /* leading_symbol_char: is the first char of a user symbol
 177       predictable, and if so what is it */
 178    0,
 179
 180   /* ar_pad_char: pad character for filenames within an archive header
 181      FIXME:  this really has nothing to do with ELF, this is a characteristic
 182      of the archiver and/or os and should be independently tunable */
 183   '/',
 184
 185   /* ar_max_namelen: maximum number of characters in an archive header
 186      FIXME:  this really has nothing to do with ELF, this is a characteristic
 187      of the archiver and should be independently tunable.  This value is
 188      a WAG (wild a** guess) */
 189   15,
 190
 191   /* align_power_min: minimum alignment restriction for any section
 192      FIXME:  this value may be target machine dependent */
 193   3,
 194
 195   /* Routines to byte-swap various sized integers from the data sections */
 196   _do_getl64, _do_getl_signed_64, _do_putl64,
 197     _do_getl32, _do_getl_signed_32, _do_putl32,
 198     _do_getl16, _do_getl_signed_16, _do_putl16,
 199
 200   /* Routines to byte-swap various sized integers from the file headers */
 201   _do_getl64, _do_getl_signed_64, _do_putl64,
 202     _do_getl32, _do_getl_signed_32, _do_putl32,
 203     _do_getl16, _do_getl_signed_16, _do_putl16,
 204
 205   /* bfd_check_format: check the format of a file being read */
 206   { _bfd_dummy_target,          /* unknown format */
 207     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 208     bfd_generic_archive_p,      /* an archive */
 209     bfd_elf32_core_file_p       /* a core file */
 210   },
 211
 212   /* bfd_set_format: set the format of a file being written */
 213   { bfd_false,
 214     bfd_elf32_mkobject,
 215     _bfd_generic_mkarchive,
 216     bfd_false
 217   },
 218
 219   /* bfd_write_contents: write cached information into a file being written */
 220   { bfd_false,
 221     bfd_elf32_write_object_contents,
 222     _bfd_write_archive_contents,
 223     bfd_false
 224   },
 225
 226   /* Initialize a jump table with the standard macro.  All names start with
 227      "elf" */
 228   JUMP_TABLE(bfd_elf32),
 229
 230   /* backend_data: */
 231   (PTR) &elf32_bed,
 232 };
 233 #endif