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 #ifndef elf_backend_object_p
  63 #define elf_backend_object_p            0       /* elf_backend_object_p */
  64 #endif
  65 #ifndef elf_backend_symbol_processing
  66 #define elf_backend_symbol_processing   0       /* elf_backend_symbol_processing */
  67 #endif
  68 #ifndef elf_backend_symbol_table_processing
  69 #define elf_backend_symbol_table_processing     0       /* elf_backend_symbol_table_processing */
  70 #endif
  71 #ifndef elf_backend_section_processing
  72 #define elf_backend_section_processing  0       /* elf_backend_section_processing */
  73 #endif
  74 #ifndef elf_backend_section_from_shdr
  75 #define elf_backend_section_from_shdr   0       /* elf_backend_section_from_shdr */
  76 #endif
  77 #ifndef elf_backend_fake_sections
  78 #define elf_backend_fake_sections       0       /* elf_backend_fake_sections */
  79 #endif
  80 #ifndef elf_backend_section_from_bfd_section
  81 #define elf_backend_section_from_bfd_section    0       /* elf_backend_section_from_bfd_section */
  82 #endif
  83 #ifndef elf_backend_ecoff_debug_swap
  84 #define elf_backend_ecoff_debug_swap    0       /* elf_backed_ecoff_debug_swap */
  85 #endif
  86
  87 static CONST struct elf_backend_data elf64_bed =
  88 {
  89 #ifdef USE_REL
  90   0,                            /* use_rela_p */
  91 #else
  92   1,                            /* use_rela_p */
  93 #endif
  94   1,                            /* elf_64_p */
  95   ELF_ARCH,                     /* arch */
  96   ELF_MACHINE_CODE,             /* elf_machine_code */
  97   ELF_MAXPAGESIZE,              /* maxpagesize */
  98   elf_info_to_howto,            /* elf_info_to_howto */
  99   elf_info_to_howto_rel,        /* elf_info_to_howto_rel */
 100   elf_backend_object_p,                 /* elf_backend_object_p */
 101   elf_backend_symbol_processing,        /* elf_backend_symbol_processing */
 102   elf_backend_symbol_table_processing,  /* elf_backend_symbol_table_processing */
 103   elf_backend_section_processing,       /* elf_backend_section_processing */
 104   elf_backend_section_from_shdr,        /* elf_backend_section_from_shdr */
 105   elf_backend_fake_sections,            /* elf_backend_fake_sections */
 106   elf_backend_section_from_bfd_section, /* elf_backend_section_from_bfd_section */
 107   elf_backend_ecoff_debug_swap          /* elf_backend_ecoff_debug_swap */
 108 };
 109
 110 #ifdef TARGET_BIG_SYM
 111 bfd_target TARGET_BIG_SYM =
 112 {
 113   /* name: identify kind of target */
 114   TARGET_BIG_NAME,
 115
 116   /* flavour: general indication about file */
 117   bfd_target_elf_flavour,
 118
 119   /* byteorder_big_p: data is big endian */
 120   true,
 121
 122   /* header_byteorder_big_p: header is also big endian */
 123   true,
 124
 125   /* object_flags: mask of all file flags */
 126   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 127    DYNAMIC | WP_TEXT),
 128
 129   /* section_flags: mask of all section flags */
 130   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 131    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 132
 133    /* leading_symbol_char: is the first char of a user symbol
 134       predictable, and if so what is it */
 135    0,
 136
 137   /* ar_pad_char: pad character for filenames within an archive header
 138      FIXME:  this really has nothing to do with ELF, this is a characteristic
 139      of the archiver and/or os and should be independently tunable */
 140   '/',
 141
 142   /* ar_max_namelen: maximum number of characters in an archive header
 143      FIXME:  this really has nothing to do with ELF, this is a characteristic
 144      of the archiver and should be independently tunable.  This value is
 145      a WAG (wild a** guess) */
 146   15,
 147
 148   /* align_power_min: minimum alignment restriction for any section
 149      FIXME:  this value may be target machine dependent */
 150   3,
 151
 152   /* Routines to byte-swap various sized integers from the data sections */
 153   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 154     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 155     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 156
 157   /* Routines to byte-swap various sized integers from the file headers */
 158   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 159     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 160     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 161
 162   /* bfd_check_format: check the format of a file being read */
 163   { _bfd_dummy_target,          /* unknown format */
 164     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 165     bfd_generic_archive_p,      /* an archive */
 166     bfd_elf64_core_file_p       /* a core file */
 167   },
 168
 169   /* bfd_set_format: set the format of a file being written */
 170   { bfd_false,
 171     bfd_elf_mkobject,
 172     _bfd_generic_mkarchive,
 173     bfd_false
 174   },
 175
 176   /* bfd_write_contents: write cached information into a file being written */
 177   { bfd_false,
 178     bfd_elf64_write_object_contents,
 179     _bfd_write_archive_contents,
 180     bfd_false
 181   },
 182
 183   /* Initialize a jump table with the standard macro.  All names start with
 184      "elf" */
 185   JUMP_TABLE(bfd_elf64),
 186
 187   /* backend_data: */
 188   (PTR) &elf64_bed,
 189 };
 190 #endif
 191
 192 #ifdef TARGET_LITTLE_SYM
 193 bfd_target TARGET_LITTLE_SYM =
 194 {
 195   /* name: identify kind of target */
 196   TARGET_LITTLE_NAME,
 197
 198   /* flavour: general indication about file */
 199   bfd_target_elf_flavour,
 200
 201   /* byteorder_big_p: data is big endian */
 202   false,                /* Nope -- this one's little endian */
 203
 204   /* header_byteorder_big_p: header is also big endian */
 205   false,                /* Nope -- this one's little endian */
 206
 207   /* object_flags: mask of all file flags */
 208   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 209    DYNAMIC | WP_TEXT),
 210
 211   /* section_flags: mask of all section flags */
 212   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 213    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 214
 215    /* leading_symbol_char: is the first char of a user symbol
 216       predictable, and if so what is it */
 217    0,
 218
 219   /* ar_pad_char: pad character for filenames within an archive header
 220      FIXME:  this really has nothing to do with ELF, this is a characteristic
 221      of the archiver and/or os and should be independently tunable */
 222   '/',
 223
 224   /* ar_max_namelen: maximum number of characters in an archive header
 225      FIXME:  this really has nothing to do with ELF, this is a characteristic
 226      of the archiver and should be independently tunable.  This value is
 227      a WAG (wild a** guess) */
 228   15,
 229
 230   /* align_power_min: minimum alignment restriction for any section
 231      FIXME:  this value may be target machine dependent */
 232   3,
 233
 234   /* Routines to byte-swap various sized integers from the data sections */
 235   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 236     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 237     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 238
 239   /* Routines to byte-swap various sized integers from the file headers */
 240   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 241     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 242     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 243
 244   /* bfd_check_format: check the format of a file being read */
 245   { _bfd_dummy_target,          /* unknown format */
 246     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 247     bfd_generic_archive_p,      /* an archive */
 248     bfd_elf64_core_file_p       /* a core file */
 249   },
 250
 251   /* bfd_set_format: set the format of a file being written */
 252   { bfd_false,
 253     bfd_elf_mkobject,
 254     _bfd_generic_mkarchive,
 255     bfd_false
 256   },
 257
 258   /* bfd_write_contents: write cached information into a file being written */
 259   { bfd_false,
 260     bfd_elf64_write_object_contents,
 261     _bfd_write_archive_contents,
 262     bfd_false
 263   },
 264
 265   /* Initialize a jump table with the standard macro.  All names start with
 266      "elf" */
 267   JUMP_TABLE(bfd_elf64),
 268
 269   /* backend_data: */
 270   (PTR) &elf64_bed,
 271 };
 272 #endif