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_seclet_link bfd_generic_seclet_link
  51 #define bfd_elf64_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 elf64_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 #ifdef elf_info_to_howto_rel
  73   elf_info_to_howto_rel,        /* elf_info_to_howto_rel */
  74 #else
  75   0,                            /* elf_info_to_howto_rel */
  76 #endif
  77   ELF_MAXPAGESIZE,              /* maxpagesize */
  78 };
  79
  80 #ifdef TARGET_BIG_SYM
  81 bfd_target TARGET_BIG_SYM =
  82 {
  83   /* name: identify kind of target */
  84   TARGET_BIG_NAME,
  85
  86   /* flavour: general indication about file */
  87   bfd_target_elf_flavour,
  88
  89   /* byteorder_big_p: data is big endian */
  90   true,
  91
  92   /* header_byteorder_big_p: header is also big endian */
  93   true,
  94
  95   /* object_flags: mask of all file flags */
  96   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
  97    DYNAMIC | WP_TEXT),
  98
  99   /* section_flags: mask of all section flags */
 100   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 101    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 102
 103    /* leading_symbol_char: is the first char of a user symbol
 104       predictable, and if so what is it */
 105    0,
 106
 107   /* ar_pad_char: pad character for filenames within an archive header
 108      FIXME:  this really has nothing to do with ELF, this is a characteristic
 109      of the archiver and/or os and should be independently tunable */
 110   '/',
 111
 112   /* ar_max_namelen: maximum number of characters in an archive header
 113      FIXME:  this really has nothing to do with ELF, this is a characteristic
 114      of the archiver and should be independently tunable.  This value is
 115      a WAG (wild a** guess) */
 116   15,
 117
 118   /* align_power_min: minimum alignment restriction for any section
 119      FIXME:  this value may be target machine dependent */
 120   3,
 121
 122   /* Routines to byte-swap various sized integers from the data sections */
 123   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 124     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 125     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 126
 127   /* Routines to byte-swap various sized integers from the file headers */
 128   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 129     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 130     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 131
 132   /* bfd_check_format: check the format of a file being read */
 133   { _bfd_dummy_target,          /* unknown format */
 134     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 135     bfd_generic_archive_p,      /* an archive */
 136     bfd_elf64_core_file_p       /* a core file */
 137   },
 138
 139   /* bfd_set_format: set the format of a file being written */
 140   { bfd_false,
 141     bfd_elf_mkobject,
 142     _bfd_generic_mkarchive,
 143     bfd_false
 144   },
 145
 146   /* bfd_write_contents: write cached information into a file being written */
 147   { bfd_false,
 148     bfd_elf64_write_object_contents,
 149     _bfd_write_archive_contents,
 150     bfd_false
 151   },
 152
 153   /* Initialize a jump table with the standard macro.  All names start with
 154      "elf" */
 155   JUMP_TABLE(bfd_elf64),
 156
 157   /* backend_data: */
 158   (PTR) &elf64_bed,
 159 };
 160 #endif
 161
 162 #ifdef TARGET_LITTLE_SYM
 163 bfd_target TARGET_LITTLE_SYM =
 164 {
 165   /* name: identify kind of target */
 166   TARGET_LITTLE_NAME,
 167
 168   /* flavour: general indication about file */
 169   bfd_target_elf_flavour,
 170
 171   /* byteorder_big_p: data is big endian */
 172   false,                /* Nope -- this one's little endian */
 173
 174   /* header_byteorder_big_p: header is also big endian */
 175   false,                /* Nope -- this one's little endian */
 176
 177   /* object_flags: mask of all file flags */
 178   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 179    DYNAMIC | WP_TEXT),
 180
 181   /* section_flags: mask of all section flags */
 182   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 183    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 184
 185    /* leading_symbol_char: is the first char of a user symbol
 186       predictable, and if so what is it */
 187    0,
 188
 189   /* ar_pad_char: pad character for filenames within an archive header
 190      FIXME:  this really has nothing to do with ELF, this is a characteristic
 191      of the archiver and/or os and should be independently tunable */
 192   '/',
 193
 194   /* ar_max_namelen: maximum number of characters in an archive header
 195      FIXME:  this really has nothing to do with ELF, this is a characteristic
 196      of the archiver and should be independently tunable.  This value is
 197      a WAG (wild a** guess) */
 198   15,
 199
 200   /* align_power_min: minimum alignment restriction for any section
 201      FIXME:  this value may be target machine dependent */
 202   3,
 203
 204   /* Routines to byte-swap various sized integers from the data sections */
 205   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 206     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 207     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 208
 209   /* Routines to byte-swap various sized integers from the file headers */
 210   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 211     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 212     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 213
 214   /* bfd_check_format: check the format of a file being read */
 215   { _bfd_dummy_target,          /* unknown format */
 216     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 217     bfd_generic_archive_p,      /* an archive */
 218     bfd_elf64_core_file_p       /* a core file */
 219   },
 220
 221   /* bfd_set_format: set the format of a file being written */
 222   { bfd_false,
 223     bfd_elf_mkobject,
 224     _bfd_generic_mkarchive,
 225     bfd_false
 226   },
 227
 228   /* bfd_write_contents: write cached information into a file being written */
 229   { bfd_false,
 230     bfd_elf64_write_object_contents,
 231     _bfd_write_archive_contents,
 232     bfd_false
 233   },
 234
 235   /* Initialize a jump table with the standard macro.  All names start with
 236      "elf" */
 237   JUMP_TABLE(bfd_elf64),
 238
 239   /* backend_data: */
 240   (PTR) &elf64_bed,
 241 };
 242 #endif