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_new_section_hook              _bfd_dummy_new_section_hook
  42 #define bfd_elf32_get_section_contents  bfd_generic_get_section_contents
  43 #define bfd_elf32_close_and_cleanup             bfd_generic_close_and_cleanup
  44
  45 #define bfd_elf32_bfd_debug_info_start  bfd_void
  46 #define bfd_elf32_bfd_debug_info_end    bfd_void
  47 #define bfd_elf32_bfd_debug_info_accumulate     (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
  48 #define bfd_elf32_bfd_get_relocated_section_contents \
  49  bfd_generic_get_relocated_section_contents
  50 #define bfd_elf32_bfd_relax_section bfd_generic_relax_section
  51 #define bfd_elf32_bfd_seclet_link bfd_generic_seclet_link
  52 #define bfd_elf32_bfd_make_debug_symbol \
  53   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
  54
  55 static CONST struct elf32_backend_data elf32_bed =
  56 {
  57 #ifdef USE_REL
  58   0,                            /* use_rela_p */
  59 #else
  60   1,                            /* use_rela_p */
  61 #endif
  62   0,                            /* elf_64_p */
  63   ELF_ARCH,                     /* arch */
  64   elf_info_to_howto,            /* elf_info_to_howto */
  65 #ifdef elf_info_to_howto_rel
  66   elf_info_to_howto_rel,        /* elf_info_to_howto_rel */
  67 #else
  68   0,                            /* elf_info_to_howto_rel */
  69 #endif
  70 };
  71
  72 #ifdef TARGET_BIG_SYM
  73 bfd_target TARGET_BIG_SYM =
  74 {
  75   /* name: identify kind of target */
  76   TARGET_BIG_NAME,
  77
  78   /* flavour: general indication about file */
  79   bfd_target_elf_flavour,
  80
  81   /* byteorder_big_p: data is big endian */
  82   true,
  83
  84   /* header_byteorder_big_p: header is also big endian */
  85   true,
  86
  87   /* object_flags: mask of all file flags */
  88   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
  89    DYNAMIC | WP_TEXT),
  90
  91   /* section_flags: mask of all section flags */
  92   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
  93    SEC_CODE | SEC_DATA),
  94
  95    /* leading_symbol_char: is the first char of a user symbol
  96       predictable, and if so what is it */
  97    0,
  98
  99   /* ar_pad_char: pad character for filenames within an archive header
 100      FIXME:  this really has nothing to do with ELF, this is a characteristic
 101      of the archiver and/or os and should be independently tunable */
 102   '/',
 103
 104   /* ar_max_namelen: maximum number of characters in an archive header
 105      FIXME:  this really has nothing to do with ELF, this is a characteristic
 106      of the archiver and should be independently tunable.  This value is
 107      a WAG (wild a** guess) */
 108   15,
 109
 110   /* align_power_min: minimum alignment restriction for any section
 111      FIXME:  this value may be target machine dependent */
 112   3,
 113
 114   /* Routines to byte-swap various sized integers from the data sections */
 115   _do_getb64, _do_getb_signed_64, _do_putb64,
 116     _do_getb32, _do_getb_signed_32, _do_putb32,
 117     _do_getb16, _do_getb_signed_16, _do_putb16,
 118
 119   /* Routines to byte-swap various sized integers from the file headers */
 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   /* bfd_check_format: check the format of a file being read */
 125   { _bfd_dummy_target,          /* unknown format */
 126     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 127     bfd_generic_archive_p,      /* an archive */
 128     bfd_elf32_core_file_p       /* a core file */
 129   },
 130
 131   /* bfd_set_format: set the format of a file being written */
 132   { bfd_false,
 133     bfd_elf32_mkobject,
 134     _bfd_generic_mkarchive,
 135     bfd_false
 136   },
 137
 138   /* bfd_write_contents: write cached information into a file being written */
 139   { bfd_false,
 140     bfd_elf32_write_object_contents,
 141     _bfd_write_archive_contents,
 142     bfd_false
 143   },
 144
 145   /* Initialize a jump table with the standard macro.  All names start with
 146      "elf" */
 147   JUMP_TABLE(bfd_elf32),
 148
 149   /* backend_data: */
 150   (PTR) &elf32_bed,
 151 };
 152 #endif
 153
 154 #ifdef TARGET_LITTLE_SYM
 155 bfd_target TARGET_LITTLE_SYM =
 156 {
 157   /* name: identify kind of target */
 158   TARGET_LITTLE_NAME,
 159
 160   /* flavour: general indication about file */
 161   bfd_target_elf_flavour,
 162
 163   /* byteorder_big_p: data is big endian */
 164   false,                /* Nope -- this one's little endian */
 165
 166   /* header_byteorder_big_p: header is also big endian */
 167   false,                /* Nope -- this one's little endian */
 168
 169   /* object_flags: mask of all file flags */
 170   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 171    DYNAMIC | WP_TEXT),
 172
 173   /* section_flags: mask of all section flags */
 174   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 175    SEC_DATA),
 176
 177    /* leading_symbol_char: is the first char of a user symbol
 178       predictable, and if so what is it */
 179    0,
 180
 181   /* ar_pad_char: pad character for filenames within an archive header
 182      FIXME:  this really has nothing to do with ELF, this is a characteristic
 183      of the archiver and/or os and should be independently tunable */
 184   '/',
 185
 186   /* ar_max_namelen: maximum number of characters in an archive header
 187      FIXME:  this really has nothing to do with ELF, this is a characteristic
 188      of the archiver and should be independently tunable.  This value is
 189      a WAG (wild a** guess) */
 190   15,
 191
 192   /* align_power_min: minimum alignment restriction for any section
 193      FIXME:  this value may be target machine dependent */
 194   3,
 195
 196   /* Routines to byte-swap various sized integers from the data sections */
 197   _do_getl64, _do_getl_signed_64, _do_putl64,
 198     _do_getl32, _do_getl_signed_32, _do_putl32,
 199     _do_getl16, _do_getl_signed_16, _do_putl16,
 200
 201   /* Routines to byte-swap various sized integers from the file headers */
 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   /* bfd_check_format: check the format of a file being read */
 207   { _bfd_dummy_target,          /* unknown format */
 208     bfd_elf32_object_p,         /* assembler/linker output (object file) */
 209     bfd_generic_archive_p,      /* an archive */
 210     bfd_elf32_core_file_p       /* a core file */
 211   },
 212
 213   /* bfd_set_format: set the format of a file being written */
 214   { bfd_false,
 215     bfd_elf32_mkobject,
 216     _bfd_generic_mkarchive,
 217     bfd_false
 218   },
 219
 220   /* bfd_write_contents: write cached information into a file being written */
 221   { bfd_false,
 222     bfd_elf32_write_object_contents,
 223     _bfd_write_archive_contents,
 224     bfd_false
 225   },
 226
 227   /* Initialize a jump table with the standard macro.  All names start with
 228      "elf" */
 229   JUMP_TABLE(bfd_elf32),
 230
 231   /* backend_data: */
 232   (PTR) &elf32_bed,
 233 };
 234 #endif