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 #ifndef elf_info_to_howto_rel
  55 #define elf_info_to_howto_rel 0
  56 #endif
  57
  58 #ifndef ELF_MAXPAGESIZE
  59 #define ELF_MAXPAGESIZE 1
  60 #endif
  61
  62 static CONST struct elf_backend_data elf32_bed =
  63 {
  64 #ifdef USE_REL
  65   0,                            /* use_rela_p */
  66 #else
  67   1,                            /* use_rela_p */
  68 #endif
  69   0,                            /* elf_64_p */
  70   ELF_ARCH,                     /* arch */
  71   elf_info_to_howto,            /* elf_info_to_howto */
  72   elf_info_to_howto_rel,        /* elf_info_to_howto_rel */
  73   ELF_MAXPAGESIZE,              /* maxpagesize */
  74   bfd_elf32__write_relocs,      /* write_relocs */
  75 };
  76
  77 #ifdef TARGET_BIG_SYM
  78 bfd_target TARGET_BIG_SYM =
  79 {
  80   /* name: identify kind of target */
  81   TARGET_BIG_NAME,
  82
  83   /* flavour: general indication about file */
  84   bfd_target_elf_flavour,
  85
  86   /* byteorder_big_p: data is big endian */
  87   true,
  88
  89   /* header_byteorder_big_p: header is also big endian */
  90   true,
  91
  92   /* object_flags: mask of all file flags */
  93   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
  94    DYNAMIC | WP_TEXT),
  95
  96   /* section_flags: mask of all section flags */
  97   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
  98    SEC_CODE | SEC_DATA),
  99
 100    /* leading_symbol_char: is the first char of a user symbol
 101       predictable, and if so what is it */
 102    0,
 103
 104   /* ar_pad_char: pad character for filenames within an archive header
 105      FIXME:  this really has nothing to do with ELF, this is a characteristic
 106      of the archiver and/or os and should be independently tunable */
 107   '/',
 108
 109   /* ar_max_namelen: maximum number of characters in an archive header
 110      FIXME:  this really has nothing to do with ELF, this is a characteristic
 111      of the archiver and should be independently tunable.  This value is
 112      a WAG (wild a** guess) */
 113   15,
 114
 115   /* align_power_min: minimum alignment restriction for any section
 116      FIXME:  this value may be target machine dependent */
 117   3,
 118
 119   /* Routines to byte-swap various sized integers from the data sections */
 120   _do_getb64, _do_getb_signed_64, _do_putb64,
 121     _do_getb32, _do_getb_signed_32, _do_putb32,
 122     _do_getb16, _do_getb_signed_16, _do_putb16,
 123
 124   /* Routines to byte-swap various sized integers from the file headers */
 125   _do_getb64, _do_getb_signed_64, _do_putb64,
 126     _do_getb32, _do_getb_signed_32, _do_putb32,
 127     _do_getb16, _do_getb_signed_16, _do_putb16,
 128
 129   /* bfd_check_format: check the format of a file being read */
 130   { _bfd_dummy_target,          /* unknown format */
 131     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 132     bfd_generic_archive_p,      /* an archive */
 133     bfd_elf32_core_file_p       /* a core file */
 134   },
 135
 136   /* bfd_set_format: set the format of a file being written */
 137   { bfd_false,
 138     bfd_elf_mkobject,
 139     _bfd_generic_mkarchive,
 140     bfd_false
 141   },
 142
 143   /* bfd_write_contents: write cached information into a file being written */
 144   { bfd_false,
 145     bfd_elf32_write_object_contents,
 146     _bfd_write_archive_contents,
 147     bfd_false
 148   },
 149
 150   /* Initialize a jump table with the standard macro.  All names start with
 151      "elf" */
 152   JUMP_TABLE(bfd_elf32),
 153
 154   /* backend_data: */
 155   (PTR) &elf32_bed,
 156 };
 157 #endif
 158
 159 #ifdef TARGET_LITTLE_SYM
 160 bfd_target TARGET_LITTLE_SYM =
 161 {
 162   /* name: identify kind of target */
 163   TARGET_LITTLE_NAME,
 164
 165   /* flavour: general indication about file */
 166   bfd_target_elf_flavour,
 167
 168   /* byteorder_big_p: data is big endian */
 169   false,                /* Nope -- this one's little endian */
 170
 171   /* header_byteorder_big_p: header is also big endian */
 172   false,                /* Nope -- this one's little endian */
 173
 174   /* object_flags: mask of all file flags */
 175   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 176    DYNAMIC | WP_TEXT),
 177
 178   /* section_flags: mask of all section flags */
 179   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 180    SEC_DATA),
 181
 182    /* leading_symbol_char: is the first char of a user symbol
 183       predictable, and if so what is it */
 184    0,
 185
 186   /* ar_pad_char: pad character for filenames within an archive header
 187      FIXME:  this really has nothing to do with ELF, this is a characteristic
 188      of the archiver and/or os and should be independently tunable */
 189   '/',
 190
 191   /* ar_max_namelen: maximum number of characters in an archive header
 192      FIXME:  this really has nothing to do with ELF, this is a characteristic
 193      of the archiver and should be independently tunable.  This value is
 194      a WAG (wild a** guess) */
 195   15,
 196
 197   /* align_power_min: minimum alignment restriction for any section
 198      FIXME:  this value may be target machine dependent */
 199   3,
 200
 201   /* Routines to byte-swap various sized integers from the data sections */
 202   _do_getl64, _do_getl_signed_64, _do_putl64,
 203     _do_getl32, _do_getl_signed_32, _do_putl32,
 204     _do_getl16, _do_getl_signed_16, _do_putl16,
 205
 206   /* Routines to byte-swap various sized integers from the file headers */
 207   _do_getl64, _do_getl_signed_64, _do_putl64,
 208     _do_getl32, _do_getl_signed_32, _do_putl32,
 209     _do_getl16, _do_getl_signed_16, _do_putl16,
 210
 211   /* bfd_check_format: check the format of a file being read */
 212   { _bfd_dummy_target,          /* unknown format */
 213     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 214     bfd_generic_archive_p,      /* an archive */
 215     bfd_elf32_core_file_p       /* a core file */
 216   },
 217
 218   /* bfd_set_format: set the format of a file being written */
 219   { bfd_false,
 220     bfd_elf_mkobject,
 221     _bfd_generic_mkarchive,
 222     bfd_false
 223   },
 224
 225   /* bfd_write_contents: write cached information into a file being written */
 226   { bfd_false,
 227     bfd_elf32_write_object_contents,
 228     _bfd_write_archive_contents,
 229     bfd_false
 230   },
 231
 232   /* Initialize a jump table with the standard macro.  All names start with
 233      "elf" */
 234   JUMP_TABLE(bfd_elf32),
 235
 236   /* backend_data: */
 237   (PTR) &elf32_bed,
 238 };
 239 #endif