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_sym_is_global
  63 #define elf_backend_sym_is_global       0
  64 #endif
  65 #ifndef elf_backend_object_p
  66 #define elf_backend_object_p            0
  67 #endif
  68 #ifndef elf_backend_symbol_processing
  69 #define elf_backend_symbol_processing   0
  70 #endif
  71 #ifndef elf_backend_symbol_table_processing
  72 #define elf_backend_symbol_table_processing     0
  73 #endif
  74 #ifndef elf_backend_section_processing
  75 #define elf_backend_section_processing  0
  76 #endif
  77 #ifndef elf_backend_section_from_shdr
  78 #define elf_backend_section_from_shdr   0
  79 #endif
  80 #ifndef elf_backend_fake_sections
  81 #define elf_backend_fake_sections       0
  82 #endif
  83 #ifndef elf_backend_section_from_bfd_section
  84 #define elf_backend_section_from_bfd_section    0
  85 #endif
  86 #ifndef elf_backend_final_write_processing
  87 #define elf_backend_final_write_processing      0
  88 #endif
  89 #ifndef elf_backend_ecoff_debug_swap
  90 #define elf_backend_ecoff_debug_swap    0
  91 #endif
  92
  93 static CONST struct elf_backend_data elf64_bed =
  94 {
  95 #ifdef USE_REL
  96   0,                            /* use_rela_p */
  97 #else
  98   1,                            /* use_rela_p */
  99 #endif
 100   1,                            /* elf_64_p */
 101   ELF_ARCH,                     /* arch */
 102   ELF_MACHINE_CODE,             /* elf_machine_code */
 103   ELF_MAXPAGESIZE,              /* maxpagesize */
 104   elf_info_to_howto,
 105   elf_info_to_howto_rel,
 106   elf_backend_sym_is_global,
 107   elf_backend_object_p,
 108   elf_backend_symbol_processing,
 109   elf_backend_symbol_table_processing,
 110   elf_backend_section_processing,
 111   elf_backend_section_from_shdr,
 112   elf_backend_fake_sections,
 113   elf_backend_section_from_bfd_section,
 114   elf_backend_ecoff_debug_swap
 115 };
 116
 117 #ifdef TARGET_BIG_SYM
 118 bfd_target TARGET_BIG_SYM =
 119 {
 120   /* name: identify kind of target */
 121   TARGET_BIG_NAME,
 122
 123   /* flavour: general indication about file */
 124   bfd_target_elf_flavour,
 125
 126   /* byteorder_big_p: data is big endian */
 127   true,
 128
 129   /* header_byteorder_big_p: header is also big endian */
 130   true,
 131
 132   /* object_flags: mask of all file flags */
 133   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 134    DYNAMIC | WP_TEXT),
 135
 136   /* section_flags: mask of all section flags */
 137   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 138    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 139
 140    /* leading_symbol_char: is the first char of a user symbol
 141       predictable, and if so what is it */
 142    0,
 143
 144   /* ar_pad_char: pad character for filenames within an archive header
 145      FIXME:  this really has nothing to do with ELF, this is a characteristic
 146      of the archiver and/or os and should be independently tunable */
 147   '/',
 148
 149   /* ar_max_namelen: maximum number of characters in an archive header
 150      FIXME:  this really has nothing to do with ELF, this is a characteristic
 151      of the archiver and should be independently tunable.  This value is
 152      a WAG (wild a** guess) */
 153   15,
 154
 155   /* align_power_min: minimum alignment restriction for any section
 156      FIXME:  this value may be target machine dependent */
 157   3,
 158
 159   /* Routines to byte-swap various sized integers from the data sections */
 160   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 161     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 162     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 163
 164   /* Routines to byte-swap various sized integers from the file headers */
 165   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 166     bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 167     bfd_getb16, bfd_getb_signed_16, bfd_putb16,
 168
 169   /* bfd_check_format: check the format of a file being read */
 170   { _bfd_dummy_target,          /* unknown format */
 171     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 172     bfd_generic_archive_p,      /* an archive */
 173     bfd_elf64_core_file_p       /* a core file */
 174   },
 175
 176   /* bfd_set_format: set the format of a file being written */
 177   { bfd_false,
 178     bfd_elf_mkobject,
 179     _bfd_generic_mkarchive,
 180     bfd_false
 181   },
 182
 183   /* bfd_write_contents: write cached information into a file being written */
 184   { bfd_false,
 185     bfd_elf64_write_object_contents,
 186     _bfd_write_archive_contents,
 187     bfd_false
 188   },
 189
 190   /* Initialize a jump table with the standard macro.  All names start with
 191      "elf" */
 192   JUMP_TABLE(bfd_elf64),
 193
 194   /* backend_data: */
 195   (PTR) &elf64_bed,
 196 };
 197 #endif
 198
 199 #ifdef TARGET_LITTLE_SYM
 200 bfd_target TARGET_LITTLE_SYM =
 201 {
 202   /* name: identify kind of target */
 203   TARGET_LITTLE_NAME,
 204
 205   /* flavour: general indication about file */
 206   bfd_target_elf_flavour,
 207
 208   /* byteorder_big_p: data is big endian */
 209   false,                /* Nope -- this one's little endian */
 210
 211   /* header_byteorder_big_p: header is also big endian */
 212   false,                /* Nope -- this one's little endian */
 213
 214   /* object_flags: mask of all file flags */
 215   (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
 216    DYNAMIC | WP_TEXT),
 217
 218   /* section_flags: mask of all section flags */
 219   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
 220    SEC_CODE | SEC_DATA | SEC_DEBUGGING),
 221
 222    /* leading_symbol_char: is the first char of a user symbol
 223       predictable, and if so what is it */
 224    0,
 225
 226   /* ar_pad_char: pad character for filenames within an archive header
 227      FIXME:  this really has nothing to do with ELF, this is a characteristic
 228      of the archiver and/or os and should be independently tunable */
 229   '/',
 230
 231   /* ar_max_namelen: maximum number of characters in an archive header
 232      FIXME:  this really has nothing to do with ELF, this is a characteristic
 233      of the archiver and should be independently tunable.  This value is
 234      a WAG (wild a** guess) */
 235   15,
 236
 237   /* align_power_min: minimum alignment restriction for any section
 238      FIXME:  this value may be target machine dependent */
 239   3,
 240
 241   /* Routines to byte-swap various sized integers from the data sections */
 242   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 243     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 244     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 245
 246   /* Routines to byte-swap various sized integers from the file headers */
 247   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 248     bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 249     bfd_getl16, bfd_getl_signed_16, bfd_putl16,
 250
 251   /* bfd_check_format: check the format of a file being read */
 252   { _bfd_dummy_target,          /* unknown format */
 253     bfd_elf64_object_p,         /* assembler/linker output (object file) */
 254     bfd_generic_archive_p,      /* an archive */
 255     bfd_elf64_core_file_p       /* a core file */
 256   },
 257
 258   /* bfd_set_format: set the format of a file being written */
 259   { bfd_false,
 260     bfd_elf_mkobject,
 261     _bfd_generic_mkarchive,
 262     bfd_false
 263   },
 264
 265   /* bfd_write_contents: write cached information into a file being written */
 266   { bfd_false,
 267     bfd_elf64_write_object_contents,
 268     _bfd_write_archive_contents,
 269     bfd_false
 270   },
 271
 272   /* Initialize a jump table with the standard macro.  All names start with
 273      "elf" */
 274   JUMP_TABLE(bfd_elf64),
 275
 276   /* backend_data: */
 277   (PTR) &elf64_bed,
 278 };
 279 #endif