bfd/mach-o.h

   1 /* Mach-O support for BFD.
   2    Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2011
   3    Free Software Foundation, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #ifndef _BFD_MACH_O_H_
  23 #define _BFD_MACH_O_H_
  24
  25 #include "bfd.h"
  26 #include "mach-o/loader.h"
  27
  28 typedef struct bfd_mach_o_header
  29 {
  30   unsigned long magic;
  31   unsigned long cputype;
  32   unsigned long cpusubtype;
  33   unsigned long filetype;
  34   unsigned long ncmds;
  35   unsigned long sizeofcmds;
  36   unsigned long flags;
  37   unsigned int reserved;
  38   /* Version 1: 32 bits, version 2: 64 bits.  */
  39   unsigned int version;
  40   enum bfd_endian byteorder;
  41 }
  42 bfd_mach_o_header;
  43
  44 #define BFD_MACH_O_SEGNAME_SIZE 16
  45 #define BFD_MACH_O_SECTNAME_SIZE 16
  46
  47 typedef struct bfd_mach_o_section
  48 {
  49   /* Fields present in the file.  */
  50   char sectname[BFD_MACH_O_SECTNAME_SIZE + 1];  /* Always NUL padded.  */
  51   char segname[BFD_MACH_O_SEGNAME_SIZE + 1];
  52   bfd_vma addr;
  53   bfd_vma size;
  54   bfd_vma offset;
  55   unsigned long align;
  56   bfd_vma reloff;
  57   unsigned long nreloc;
  58   unsigned long flags;
  59   unsigned long reserved1;
  60   unsigned long reserved2;
  61   unsigned long reserved3;
  62
  63   /* Corresponding bfd section.  */
  64   asection *bfdsection;
  65
  66   /* Simply linked list.  */
  67   struct bfd_mach_o_section *next;
  68 }
  69 bfd_mach_o_section;
  70
  71 typedef struct bfd_mach_o_segment_command
  72 {
  73   char segname[BFD_MACH_O_SEGNAME_SIZE + 1];
  74   bfd_vma vmaddr;
  75   bfd_vma vmsize;
  76   bfd_vma fileoff;
  77   unsigned long filesize;
  78   unsigned long maxprot;        /* Maximum permitted protection.  */
  79   unsigned long initprot;       /* Initial protection.  */
  80   unsigned long nsects;
  81   unsigned long flags;
  82
  83   /* Linked list of sections.  */
  84   bfd_mach_o_section *sect_head;
  85   bfd_mach_o_section *sect_tail;
  86 }
  87 bfd_mach_o_segment_command;
  88
  89 /* Protection flags.  */
  90 #define BFD_MACH_O_PROT_READ    0x01
  91 #define BFD_MACH_O_PROT_WRITE   0x02
  92 #define BFD_MACH_O_PROT_EXECUTE 0x04
  93
  94 /* Expanded internal representation of a relocation entry.  */
  95 typedef struct bfd_mach_o_reloc_info
  96 {
  97   bfd_vma r_address;
  98   bfd_vma r_value;
  99   unsigned int r_scattered : 1;
 100   unsigned int r_type : 4;
 101   unsigned int r_pcrel : 1;
 102   unsigned int r_length : 2;
 103   unsigned int r_extern : 1;
 104 }
 105 bfd_mach_o_reloc_info;
 106
 107 typedef struct bfd_mach_o_asymbol
 108 {
 109   /* The actual symbol which the rest of BFD works with.  */
 110   asymbol symbol;
 111
 112   /* Fields from Mach-O symbol.  */
 113   unsigned char n_type;
 114   unsigned char n_sect;
 115   unsigned short n_desc;
 116 }
 117 bfd_mach_o_asymbol;
 118
 119 typedef struct bfd_mach_o_symtab_command
 120 {
 121   unsigned int symoff;
 122   unsigned int nsyms;
 123   unsigned int stroff;
 124   unsigned int strsize;
 125   bfd_mach_o_asymbol *symbols;
 126   char *strtab;
 127 }
 128 bfd_mach_o_symtab_command;
 129
 130 /* This is the second set of the symbolic information which is used to support
 131    the data structures for the dynamically link editor.
 132
 133    The original set of symbolic information in the symtab_command which contains
 134    the symbol and string tables must also be present when this load command is
 135    present.  When this load command is present the symbol table is organized
 136    into three groups of symbols:
 137        local symbols (static and debugging symbols) - grouped by module
 138        defined external symbols - grouped by module (sorted by name if not lib)
 139        undefined external symbols (sorted by name)
 140    In this load command there are offsets and counts to each of the three groups
 141    of symbols.
 142
 143    This load command contains a the offsets and sizes of the following new
 144    symbolic information tables:
 145        table of contents
 146        module table
 147        reference symbol table
 148        indirect symbol table
 149    The first three tables above (the table of contents, module table and
 150    reference symbol table) are only present if the file is a dynamically linked
 151    shared library.  For executable and object modules, which are files
 152    containing only one module, the information that would be in these three
 153    tables is determined as follows:
 154        table of contents - the defined external symbols are sorted by name
 155        module table - the file contains only one module so everything in the
 156                       file is part of the module.
 157        reference symbol table - is the defined and undefined external symbols
 158
 159    For dynamically linked shared library files this load command also contains
 160    offsets and sizes to the pool of relocation entries for all sections
 161    separated into two groups:
 162        external relocation entries
 163        local relocation entries
 164    For executable and object modules the relocation entries continue to hang
 165    off the section structures.  */
 166
 167 typedef struct bfd_mach_o_dylib_module
 168 {
 169   /* Index into the string table indicating the name of the module.  */
 170   unsigned long module_name_idx;
 171   char *module_name;
 172
 173   /* Index into the symbol table of the first defined external symbol provided
 174      by the module.  */
 175   unsigned long iextdefsym;
 176
 177   /* Number of external symbols provided by this module.  */
 178   unsigned long nextdefsym;
 179
 180   /* Index into the external reference table of the first entry
 181      provided by this module.  */
 182   unsigned long irefsym;
 183
 184   /* Number of external reference entries provided by this module.  */
 185   unsigned long nrefsym;
 186
 187   /* Index into the symbol table of the first local symbol provided by this
 188      module.  */
 189   unsigned long ilocalsym;
 190
 191   /* Number of local symbols provided by this module.  */
 192   unsigned long nlocalsym;
 193
 194   /* Index into the external relocation table of the first entry provided
 195      by this module.  */
 196   unsigned long iextrel;
 197
 198   /* Number of external relocation entries provided by this module.  */
 199   unsigned long nextrel;
 200
 201   /* Index in the module initialization section to the pointers for this
 202      module.  */
 203   unsigned short iinit;
 204
 205   /* Index in the module termination section to the pointers for this
 206      module.  */
 207   unsigned short iterm;
 208
 209   /* Number of pointers in the module initialization for this module.  */
 210   unsigned short ninit;
 211
 212   /* Number of pointers in the module termination for this module.  */
 213   unsigned short nterm;
 214
 215   /* Number of data byte for this module that are used in the __module_info
 216      section of the __OBJC segment.  */
 217   unsigned long objc_module_info_size;
 218
 219   /* Statically linked address of the start of the data for this module
 220      in the __module_info section of the __OBJC_segment.  */
 221   bfd_vma objc_module_info_addr;
 222 }
 223 bfd_mach_o_dylib_module;
 224
 225 typedef struct bfd_mach_o_dylib_table_of_content
 226 {
 227   /* Index into the symbol table to the defined external symbol.  */
 228   unsigned long symbol_index;
 229
 230   /* Index into the module table to the module for this entry.  */
 231   unsigned long module_index;
 232 }
 233 bfd_mach_o_dylib_table_of_content;
 234
 235 typedef struct bfd_mach_o_dylib_reference
 236 {
 237   /* Index into the symbol table for the symbol being referenced.  */
 238   unsigned long isym;
 239
 240   /* Type of the reference being made (use REFERENCE_FLAGS constants).  */
 241   unsigned long flags;
 242 }
 243 bfd_mach_o_dylib_reference;
 244 #define BFD_MACH_O_REFERENCE_SIZE 4
 245
 246 typedef struct bfd_mach_o_dysymtab_command
 247 {
 248   /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
 249      are grouped into the following three groups:
 250        local symbols (further grouped by the module they are from)
 251        defined external symbols (further grouped by the module they are from)
 252        undefined symbols
 253
 254      The local symbols are used only for debugging.  The dynamic binding
 255      process may have to use them to indicate to the debugger the local
 256      symbols for a module that is being bound.
 257
 258      The last two groups are used by the dynamic binding process to do the
 259      binding (indirectly through the module table and the reference symbol
 260      table when this is a dynamically linked shared library file).  */
 261
 262   unsigned long ilocalsym;    /* Index to local symbols.  */
 263   unsigned long nlocalsym;    /* Number of local symbols.  */
 264   unsigned long iextdefsym;   /* Index to externally defined symbols.  */
 265   unsigned long nextdefsym;   /* Number of externally defined symbols.  */
 266   unsigned long iundefsym;    /* Index to undefined symbols.  */
 267   unsigned long nundefsym;    /* Number of undefined symbols.  */
 268
 269   /* For the for the dynamic binding process to find which module a symbol
 270      is defined in the table of contents is used (analogous to the ranlib
 271      structure in an archive) which maps defined external symbols to modules
 272      they are defined in.  This exists only in a dynamically linked shared
 273      library file.  For executable and object modules the defined external
 274      symbols are sorted by name and is use as the table of contents.  */
 275
 276   unsigned long tocoff;       /* File offset to table of contents.  */
 277   unsigned long ntoc;         /* Number of entries in table of contents.  */
 278
 279   /* To support dynamic binding of "modules" (whole object files) the symbol
 280      table must reflect the modules that the file was created from.  This is
 281      done by having a module table that has indexes and counts into the merged
 282      tables for each module.  The module structure that these two entries
 283      refer to is described below.  This exists only in a dynamically linked
 284      shared library file.  For executable and object modules the file only
 285      contains one module so everything in the file belongs to the module.  */
 286
 287   unsigned long modtaboff;    /* File offset to module table.  */
 288   unsigned long nmodtab;      /* Number of module table entries.  */
 289
 290   /* To support dynamic module binding the module structure for each module
 291      indicates the external references (defined and undefined) each module
 292      makes.  For each module there is an offset and a count into the
 293      reference symbol table for the symbols that the module references.
 294      This exists only in a dynamically linked shared library file.  For
 295      executable and object modules the defined external symbols and the
 296      undefined external symbols indicates the external references.  */
 297
 298   unsigned long extrefsymoff;  /* Offset to referenced symbol table.  */
 299   unsigned long nextrefsyms;   /* Number of referenced symbol table entries.  */
 300
 301   /* The sections that contain "symbol pointers" and "routine stubs" have
 302      indexes and (implied counts based on the size of the section and fixed
 303      size of the entry) into the "indirect symbol" table for each pointer
 304      and stub.  For every section of these two types the index into the
 305      indirect symbol table is stored in the section header in the field
 306      reserved1.  An indirect symbol table entry is simply a 32bit index into
 307      the symbol table to the symbol that the pointer or stub is referring to.
 308      The indirect symbol table is ordered to match the entries in the section.  */
 309
 310   unsigned long indirectsymoff; /* File offset to the indirect symbol table.  */
 311   unsigned long nindirectsyms;  /* Number of indirect symbol table entries.  */
 312
 313   /* To support relocating an individual module in a library file quickly the
 314      external relocation entries for each module in the library need to be
 315      accessed efficiently.  Since the relocation entries can't be accessed
 316      through the section headers for a library file they are separated into
 317      groups of local and external entries further grouped by module.  In this
 318      case the presents of this load command who's extreloff, nextrel,
 319      locreloff and nlocrel fields are non-zero indicates that the relocation
 320      entries of non-merged sections are not referenced through the section
 321      structures (and the reloff and nreloc fields in the section headers are
 322      set to zero).
 323
 324      Since the relocation entries are not accessed through the section headers
 325      this requires the r_address field to be something other than a section
 326      offset to identify the item to be relocated.  In this case r_address is
 327      set to the offset from the vmaddr of the first LC_SEGMENT command.
 328
 329      The relocation entries are grouped by module and the module table
 330      entries have indexes and counts into them for the group of external
 331      relocation entries for that the module.
 332
 333      For sections that are merged across modules there must not be any
 334      remaining external relocation entries for them (for merged sections
 335      remaining relocation entries must be local).  */
 336
 337   unsigned long extreloff;    /* Offset to external relocation entries.  */
 338   unsigned long nextrel;      /* Number of external relocation entries.  */
 339
 340   /* All the local relocation entries are grouped together (they are not
 341      grouped by their module since they are only used if the object is moved
 342      from it statically link edited address).  */
 343
 344   unsigned long locreloff;    /* Offset to local relocation entries.  */
 345   unsigned long nlocrel;      /* Number of local relocation entries.  */
 346
 347   bfd_mach_o_dylib_module *dylib_module;
 348   bfd_mach_o_dylib_table_of_content *dylib_toc;
 349   unsigned int *indirect_syms;
 350   bfd_mach_o_dylib_reference *ext_refs;
 351 }
 352 bfd_mach_o_dysymtab_command;
 353
 354 /* An indirect symbol table entry is simply a 32bit index into the symbol table
 355    to the symbol that the pointer or stub is refering to.  Unless it is for a
 356    non-lazy symbol pointer section for a defined symbol which strip(1) has
 357    removed.  In which case it has the value INDIRECT_SYMBOL_LOCAL.  If the
 358    symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that.  */
 359
 360 #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000
 361 #define BFD_MACH_O_INDIRECT_SYMBOL_ABS   0x40000000
 362 #define BFD_MACH_O_INDIRECT_SYMBOL_SIZE  4
 363
 364 /* For LC_THREAD or LC_UNIXTHREAD.  */
 365
 366 typedef struct bfd_mach_o_thread_flavour
 367 {
 368   unsigned long flavour;
 369   unsigned long offset;
 370   unsigned long size;
 371 }
 372 bfd_mach_o_thread_flavour;
 373
 374 typedef struct bfd_mach_o_thread_command
 375 {
 376   unsigned long nflavours;
 377   bfd_mach_o_thread_flavour *flavours;
 378   asection *section;
 379 }
 380 bfd_mach_o_thread_command;
 381
 382 /* For LC_LOAD_DYLINKER and LC_ID_DYLINKER.  */
 383
 384 typedef struct bfd_mach_o_dylinker_command
 385 {
 386   unsigned long name_offset;         /* Offset to library's path name.  */
 387   unsigned long name_len;            /* Offset to library's path name.  */
 388   char *name_str;
 389 }
 390 bfd_mach_o_dylinker_command;
 391
 392 /* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB
 393    or LC_REEXPORT_DYLIB.  */
 394
 395 typedef struct bfd_mach_o_dylib_command
 396 {
 397   unsigned long name_offset;           /* Offset to library's path name.  */
 398   unsigned long name_len;              /* Offset to library's path name.  */
 399   unsigned long timestamp;             /* Library's build time stamp.  */
 400   unsigned long current_version;       /* Library's current version number.  */
 401   unsigned long compatibility_version; /* Library's compatibility vers number.  */
 402   char *name_str;
 403 }
 404 bfd_mach_o_dylib_command;
 405
 406 /* For LC_PREBOUND_DYLIB.  */
 407
 408 typedef struct bfd_mach_o_prebound_dylib_command
 409 {
 410   unsigned long name;                /* Library's path name.  */
 411   unsigned long nmodules;            /* Number of modules in library.  */
 412   unsigned long linked_modules;      /* Bit vector of linked modules.  */
 413 }
 414 bfd_mach_o_prebound_dylib_command;
 415
 416 /* For LC_UUID.  */
 417
 418 typedef struct bfd_mach_o_uuid_command
 419 {
 420   unsigned char uuid[16];
 421 }
 422 bfd_mach_o_uuid_command;
 423
 424 /* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO.  */
 425
 426 typedef struct bfd_mach_o_linkedit_command
 427 {
 428   unsigned long dataoff;
 429   unsigned long datasize;
 430 }
 431 bfd_mach_o_linkedit_command;
 432
 433 typedef struct bfd_mach_o_str_command
 434 {
 435   unsigned long stroff;
 436   unsigned long str_len;
 437   char *str;
 438 }
 439 bfd_mach_o_str_command;
 440
 441 typedef struct bfd_mach_o_dyld_info_command
 442 {
 443   /* File offset and size to rebase info.  */
 444   unsigned int rebase_off;
 445   unsigned int rebase_size;
 446
 447   /* File offset and size of binding info.  */
 448   unsigned int bind_off;
 449   unsigned int bind_size;
 450
 451   /* File offset and size of weak binding info.  */
 452   unsigned int weak_bind_off;
 453   unsigned int weak_bind_size;
 454
 455   /* File offset and size of lazy binding info.  */
 456   unsigned int lazy_bind_off;
 457   unsigned int lazy_bind_size;
 458
 459   /* File offset and size of export info.  */
 460   unsigned int export_off;
 461   unsigned int export_size;
 462 }
 463 bfd_mach_o_dyld_info_command;
 464
 465 typedef struct bfd_mach_o_version_min_command
 466 {
 467   unsigned char rel;
 468   unsigned char maj;
 469   unsigned char min;
 470   unsigned int reserved;
 471 }
 472 bfd_mach_o_version_min_command;
 473
 474 typedef struct bfd_mach_o_load_command
 475 {
 476   bfd_mach_o_load_command_type type;
 477   bfd_boolean type_required;
 478   unsigned int offset;
 479   unsigned int len;
 480   union
 481   {
 482     bfd_mach_o_segment_command segment;
 483     bfd_mach_o_symtab_command symtab;
 484     bfd_mach_o_dysymtab_command dysymtab;
 485     bfd_mach_o_thread_command thread;
 486     bfd_mach_o_dylib_command dylib;
 487     bfd_mach_o_dylinker_command dylinker;
 488     bfd_mach_o_prebound_dylib_command prebound_dylib;
 489     bfd_mach_o_uuid_command uuid;
 490     bfd_mach_o_linkedit_command linkedit;
 491     bfd_mach_o_str_command str;
 492     bfd_mach_o_dyld_info_command dyld_info;
 493     bfd_mach_o_version_min_command version_min;
 494   }
 495   command;
 496 }
 497 bfd_mach_o_load_command;
 498
 499 typedef struct mach_o_data_struct
 500 {
 501   /* Mach-O header.  */
 502   bfd_mach_o_header header;
 503   /* Array of load commands (length is given by header.ncmds).  */
 504   bfd_mach_o_load_command *commands;
 505
 506   /* Flatten array of sections.  The array is 0-based.  */
 507   unsigned long nsects;
 508   bfd_mach_o_section **sections;
 509
 510   /* Used while writting: current length of the output file.  This is used
 511      to allocate space in the file.  */
 512   ufile_ptr filelen;
 513
 514   /* As symtab is referenced by other load command, it is handy to have
 515      a direct access to it.  Although it is not clearly stated, only one symtab
 516      is expected.  */
 517   bfd_mach_o_symtab_command *symtab;
 518   bfd_mach_o_dysymtab_command *dysymtab;
 519
 520   /* A place to stash dwarf2 info for this bfd.  */
 521   void *dwarf2_find_line_info;
 522 }
 523 bfd_mach_o_data_struct;
 524
 525 typedef struct bfd_mach_o_xlat_name
 526 {
 527   const char *name;
 528   unsigned long val;
 529 }
 530 bfd_mach_o_xlat_name;
 531
 532 /* Target specific routines.  */
 533
 534 #define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data)
 535 #define bfd_mach_o_get_backend_data(abfd) \
 536   ((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data)
 537
 538 /* Get the Mach-O header for section SEC.  */
 539 #define bfd_mach_o_get_mach_o_section(sec) \
 540   ((bfd_mach_o_section *)(sec)->used_by_bfd)
 541
 542 bfd_boolean bfd_mach_o_valid (bfd *);
 543 bfd_boolean bfd_mach_o_mkobject_init (bfd *);
 544 const bfd_target *bfd_mach_o_object_p (bfd *);
 545 const bfd_target *bfd_mach_o_core_p (bfd *);
 546 const bfd_target *bfd_mach_o_archive_p (bfd *);
 547 bfd *bfd_mach_o_openr_next_archived_file (bfd *, bfd *);
 548 bfd_boolean bfd_mach_o_set_arch_mach (bfd *, enum bfd_architecture,
 549                                       unsigned long);
 550 int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **);
 551 bfd_boolean bfd_mach_o_new_section_hook (bfd *, asection *);
 552 bfd_boolean bfd_mach_o_write_contents (bfd *);
 553 bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *,
 554                                                      bfd *, asymbol *);
 555 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *,
 556                                                       bfd *, asection *);
 557 bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data (bfd *, bfd *);
 558 bfd_boolean bfd_mach_o_bfd_set_private_flags (bfd *, flagword);
 559 long bfd_mach_o_get_symtab_upper_bound (bfd *);
 560 long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **);
 561 long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long,
 562                                       asymbol **, asymbol **ret);
 563 long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *);
 564 long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **);
 565 long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *);
 566 long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
 567 asymbol *bfd_mach_o_make_empty_symbol (bfd *);
 568 void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *);
 569 void bfd_mach_o_print_symbol (bfd *, PTR, asymbol *, bfd_print_symbol_type);
 570 int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *);
 571 unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type);
 572 int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *);
 573 char *bfd_mach_o_core_file_failing_command (bfd *);
 574 int bfd_mach_o_core_file_failing_signal (bfd *);
 575 bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
 576 bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
 577 const bfd_target *bfd_mach_o_header_p (bfd *, bfd_mach_o_filetype,
 578                                        bfd_mach_o_cpu_type);
 579 bfd_boolean bfd_mach_o_build_commands (bfd *);
 580 bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
 581                                              file_ptr, bfd_size_type);
 582 unsigned int bfd_mach_o_version (bfd *);
 583
 584 unsigned int bfd_mach_o_get_section_type_from_name (const char *);
 585 unsigned int bfd_mach_o_get_section_attribute_from_name (const char *);
 586
 587 void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *,
 588                                              const char **, flagword *);
 589 bfd_boolean bfd_mach_o_find_nearest_line (bfd *, asection *, asymbol **,
 590                                           bfd_vma, const char **,
 591                                           const char **, unsigned int *);
 592 bfd_boolean bfd_mach_o_close_and_cleanup (bfd *);
 593
 594 unsigned int bfd_mach_o_section_get_nbr_indirect (bfd *, bfd_mach_o_section *);
 595 unsigned int bfd_mach_o_section_get_entry_size (bfd *, bfd_mach_o_section *);
 596 bfd_boolean bfd_mach_o_read_symtab_symbols (bfd *);
 597 bfd_boolean bfd_mach_o_read_symtab_strtab (bfd *abfd);
 598
 599 extern const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[];
 600 extern const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[];
 601
 602 extern const bfd_target mach_o_fat_vec;
 603
 604 /* Interfaces between BFD names and Mach-O names.  */
 605
 606 typedef struct mach_o_section_name_xlat
 607 {
 608   const char *bfd_name;
 609   const char *mach_o_name;
 610   flagword bfd_flags;
 611   unsigned int macho_sectype;
 612   unsigned int macho_secattr;
 613   unsigned int sectalign;
 614 } mach_o_section_name_xlat;
 615
 616 typedef struct mach_o_segment_name_xlat
 617 {
 618   const char *segname;
 619   const mach_o_section_name_xlat *sections;
 620 } mach_o_segment_name_xlat;
 621
 622 const mach_o_section_name_xlat *
 623 bfd_mach_o_section_data_for_mach_sect (bfd *, const char *, const char *);
 624 const mach_o_section_name_xlat *
 625 bfd_mach_o_section_data_for_bfd_name (bfd *, const char *, const char **);
 626
 627 typedef struct bfd_mach_o_backend_data
 628 {
 629   enum bfd_architecture arch;
 630   bfd_boolean (*_bfd_mach_o_swap_reloc_in)(arelent *, bfd_mach_o_reloc_info *);
 631   bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *);
 632   bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
 633                                           void *, char *);
 634   const mach_o_segment_name_xlat *segsec_names_xlat;
 635 }
 636 bfd_mach_o_backend_data;
 637
 638 #endif /* _BFD_MACH_O_H_ */