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