bfd/mach-o-target.c

   1 /* Mach-O support for BFD.
   2    Copyright (C) 1999-2021 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 /* Define generic entry points here so that we don't need to duplicate the
  22    defines in every target.  But define once as this file may be included
  23    several times.  */
  24 #ifndef MACH_O_TARGET_COMMON_DEFINED
  25 #define MACH_O_TARGET_COMMON_DEFINED
  26
  27 #define bfd_mach_o_bfd_free_cached_info               _bfd_generic_bfd_free_cached_info
  28 #define bfd_mach_o_get_section_contents_in_window     _bfd_generic_get_section_contents_in_window
  29 #define bfd_mach_o_bfd_print_private_bfd_data         bfd_mach_o_bfd_print_private_bfd_data
  30 #define bfd_mach_o_bfd_is_target_special_symbol       _bfd_bool_bfd_asymbol_false
  31 #define bfd_mach_o_bfd_is_local_label_name            bfd_generic_is_local_label_name
  32 #define bfd_mach_o_get_lineno                         _bfd_nosymbols_get_lineno
  33 #define bfd_mach_o_find_inliner_info                  _bfd_nosymbols_find_inliner_info
  34 #define bfd_mach_o_get_symbol_version_string          _bfd_nosymbols_get_symbol_version_string
  35 #define bfd_mach_o_bfd_make_debug_symbol              _bfd_nosymbols_bfd_make_debug_symbol
  36 #define bfd_mach_o_read_minisymbols                   _bfd_generic_read_minisymbols
  37 #define bfd_mach_o_minisymbol_to_symbol               _bfd_generic_minisymbol_to_symbol
  38 #define bfd_mach_o_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
  39 #define bfd_mach_o_bfd_relax_section                  bfd_generic_relax_section
  40 #define bfd_mach_o_bfd_link_hash_table_create         _bfd_generic_link_hash_table_create
  41 #define bfd_mach_o_bfd_link_add_symbols               _bfd_generic_link_add_symbols
  42 #define bfd_mach_o_bfd_link_just_syms                 _bfd_generic_link_just_syms
  43 #define bfd_mach_o_bfd_copy_link_hash_symbol_type \
  44   _bfd_generic_copy_link_hash_symbol_type
  45 #define bfd_mach_o_bfd_final_link                     _bfd_generic_final_link
  46 #define bfd_mach_o_bfd_link_split_section             _bfd_generic_link_split_section
  47 #define bfd_mach_o_bfd_link_check_relocs              _bfd_generic_link_check_relocs
  48 #define bfd_mach_o_bfd_merge_private_bfd_data         _bfd_generic_bfd_merge_private_bfd_data
  49 #define bfd_mach_o_bfd_set_private_flags              bfd_mach_o_bfd_set_private_flags
  50 #define bfd_mach_o_get_section_contents               _bfd_generic_get_section_contents
  51 #define bfd_mach_o_bfd_gc_sections                    bfd_generic_gc_sections
  52 #define bfd_mach_o_bfd_lookup_section_flags           bfd_generic_lookup_section_flags
  53 #define bfd_mach_o_bfd_merge_sections                 bfd_generic_merge_sections
  54 #define bfd_mach_o_bfd_is_group_section               bfd_generic_is_group_section
  55 #define bfd_mach_o_bfd_group_name                     bfd_generic_group_name
  56 #define bfd_mach_o_bfd_discard_group                  bfd_generic_discard_group
  57 #define bfd_mach_o_section_already_linked             _bfd_generic_section_already_linked
  58 #define bfd_mach_o_bfd_define_common_symbol           bfd_generic_define_common_symbol
  59 #define bfd_mach_o_bfd_link_hide_symbol               _bfd_generic_link_hide_symbol
  60 #define bfd_mach_o_bfd_define_start_stop              bfd_generic_define_start_stop
  61 #define bfd_mach_o_bfd_copy_private_bfd_data          _bfd_generic_bfd_copy_private_bfd_data
  62 #define bfd_mach_o_core_file_matches_executable_p     generic_core_file_matches_executable_p
  63 #define bfd_mach_o_core_file_pid                      _bfd_nocore_core_file_pid
  64 #define bfd_mach_o_set_reloc                          _bfd_generic_set_reloc
  65
  66 #define bfd_mach_o_get_dynamic_symtab_upper_bound     bfd_mach_o_get_symtab_upper_bound
  67 #define bfd_mach_o_canonicalize_dynamic_symtab        bfd_mach_o_canonicalize_symtab
  68
  69 /* For Mach-O special archives.  */
  70 #define bfd_mach_o_read_ar_hdr                    _bfd_noarchive_read_ar_hdr
  71 #define bfd_mach_o_write_ar_hdr                   _bfd_noarchive_write_ar_hdr
  72 #define bfd_mach_o_slurp_armap                    _bfd_noarchive_slurp_armap
  73 #define bfd_mach_o_slurp_extended_name_table      _bfd_noarchive_slurp_extended_name_table
  74 #define bfd_mach_o_construct_extended_name_table  _bfd_noarchive_construct_extended_name_table
  75 #define bfd_mach_o_truncate_arname                _bfd_noarchive_truncate_arname
  76 #define bfd_mach_o_write_armap                    _bfd_noarchive_write_armap
  77 #define bfd_mach_o_get_elt_at_index               _bfd_noarchive_get_elt_at_index
  78 #define bfd_mach_o_update_armap_timestamp         _bfd_noarchive_update_armap_timestamp
  79
  80 #define TARGET_NAME_BACKEND XCONCAT2(TARGET_NAME,_backend)
  81
  82 #endif /* MACH_O_TARGET_COMMON_DEFINED */
  83
  84 #ifndef TARGET_NAME
  85 #error TARGET_NAME must be defined
  86 #endif /* TARGET_NAME */
  87
  88 #ifndef TARGET_STRING
  89 #error TARGET_STRING must be defined
  90 #endif /* TARGET_STRING */
  91
  92 #ifndef TARGET_ARCHITECTURE
  93 #error TARGET_ARCHITECTURE must be defined
  94 #endif /* TARGET_ARCHITECTURE */
  95
  96 #ifndef TARGET_BIG_ENDIAN
  97 #error TARGET_BIG_ENDIAN must be defined
  98 #endif /* TARGET_BIG_ENDIAN */
  99
 100 #ifndef TARGET_ARCHIVE
 101 #error TARGET_ARCHIVE must be defined
 102 #endif /* TARGET_ARCHIVE */
 103
 104 #ifndef TARGET_PAGESIZE
 105 #error TARGET_PAGESIZE must be defined
 106 #endif
 107
 108 static const bfd_mach_o_backend_data TARGET_NAME_BACKEND =
 109 {
 110   TARGET_ARCHITECTURE,
 111   TARGET_PAGESIZE,
 112   bfd_mach_o_canonicalize_one_reloc,
 113   bfd_mach_o_swap_reloc_out,
 114   bfd_mach_o_print_thread,
 115   bfd_mach_o_tgt_seg_table,
 116   bfd_mach_o_section_type_valid_for_tgt
 117 };
 118
 119 const bfd_target TARGET_NAME =
 120 {
 121   TARGET_STRING,                /* Name.  */
 122   bfd_target_mach_o_flavour,
 123 #if TARGET_BIG_ENDIAN
 124   BFD_ENDIAN_BIG,               /* Target byte order.  */
 125   BFD_ENDIAN_BIG,               /* Target headers byte order.  */
 126 #else
 127   BFD_ENDIAN_LITTLE,            /* Target byte order.  */
 128   BFD_ENDIAN_LITTLE,            /* Target headers byte order.  */
 129 #endif
 130   (HAS_RELOC | EXEC_P |         /* Object flags.  */
 131    HAS_LINENO | HAS_DEBUG |
 132    HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
 133   (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
 134    | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
 135   '_',                          /* symbol_leading_char.  */
 136   ' ',                          /* ar_pad_char.  */
 137   16,                           /* ar_max_namelen.  */
 138   TARGET_PRIORITY,      /* match priority.  */
 139   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
 140
 141 #if TARGET_BIG_ENDIAN
 142   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 143   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 144   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
 145   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 146   bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 147   bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Hdrs.  */
 148 #else
 149   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 150   bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 151   bfd_getl16, bfd_getl_signed_16, bfd_putl16,   /* data */
 152   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 153   bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 154   bfd_getl16, bfd_getl_signed_16, bfd_putl16,   /* hdrs */
 155 #endif /* TARGET_BIG_ENDIAN */
 156
 157   {                             /* bfd_check_format.  */
 158 #if TARGET_ARCHIVE
 159     _bfd_dummy_target,
 160     _bfd_dummy_target,
 161     bfd_mach_o_archive_p,
 162     _bfd_dummy_target,
 163 #else
 164     _bfd_dummy_target,
 165     bfd_mach_o_object_p,
 166     bfd_generic_archive_p,
 167     bfd_mach_o_core_p
 168 #endif
 169   },
 170   {                             /* bfd_set_format.  */
 171     _bfd_bool_bfd_false_error,
 172     bfd_mach_o_mkobject,
 173     _bfd_generic_mkarchive,
 174     bfd_mach_o_mkobject,
 175   },
 176   {                             /* bfd_write_contents.  */
 177     _bfd_bool_bfd_false_error,
 178     bfd_mach_o_write_contents,
 179     _bfd_write_archive_contents,
 180     bfd_mach_o_write_contents,
 181   },
 182
 183   BFD_JUMP_TABLE_GENERIC (bfd_mach_o),
 184   BFD_JUMP_TABLE_COPY (bfd_mach_o),
 185   BFD_JUMP_TABLE_CORE (bfd_mach_o),
 186 #if TARGET_ARCHIVE
 187   BFD_JUMP_TABLE_ARCHIVE (bfd_mach_o),
 188 #else
 189   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44),
 190 #endif
 191   BFD_JUMP_TABLE_SYMBOLS (bfd_mach_o),
 192   BFD_JUMP_TABLE_RELOCS (bfd_mach_o),
 193   BFD_JUMP_TABLE_WRITE (bfd_mach_o),
 194   BFD_JUMP_TABLE_LINK (bfd_mach_o),
 195   BFD_JUMP_TABLE_DYNAMIC (bfd_mach_o),
 196
 197   /* Alternative endian target.  */
 198   NULL,
 199
 200   /* Back-end data.  */
 201   &TARGET_NAME_BACKEND
 202 };
 203