bfd/mach-o.h

   1 /* Mach-O support for BFD.
   2    Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2011,
   3    2012 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   /* Mach-O symbol fields.  */
 113   unsigned char n_type;
 114   unsigned char n_sect;
 115   unsigned short n_desc;
 116 }
 117 bfd_mach_o_asymbol;
 118
 119 /* The symbol table is sorted like this:
 120  (1) local.
 121         (otherwise in order of generation)
 122  (2) external defined
 123         (sorted by name)
 124  (3) external undefined
 125         (sorted by name)
 126  (4) common
 127         (sorted by name)
 128 */
 129
 130 typedef struct bfd_mach_o_symtab_command
 131 {
 132   unsigned int symoff;
 133   unsigned int nsyms;
 134   unsigned int stroff;
 135   unsigned int strsize;
 136   bfd_mach_o_asymbol *symbols;
 137   char *strtab;
 138 }
 139 bfd_mach_o_symtab_command;
 140
 141 /* This is the second set of the symbolic information which is used to support
 142    the data structures for the dynamically link editor.
 143
 144    The original set of symbolic information in the symtab_command which contains
 145    the symbol and string tables must also be present when this load command is
 146    present.  When this load command is present the symbol table is organized
 147    into three groups of symbols:
 148        local symbols (static and debugging symbols) - grouped by module
 149        defined external symbols - grouped by module (sorted by name if not lib)
 150        undefined external symbols (sorted by name)
 151    In this load command there are offsets and counts to each of the three groups
 152    of symbols.
 153
 154    This load command contains a the offsets and sizes of the following new
 155    symbolic information tables:
 156        table of contents
 157        module table
 158        reference symbol table
 159        indirect symbol table
 160    The first three tables above (the table of contents, module table and
 161    reference symbol table) are only present if the file is a dynamically linked
 162    shared library.  For executable and object modules, which are files
 163    containing only one module, the information that would be in these three
 164    tables is determined as follows:
 165        table of contents - the defined external symbols are sorted by name
 166        module table - the file contains only one module so everything in the
 167                       file is part of the module.
 168        reference symbol table - is the defined and undefined external symbols
 169
 170    For dynamically linked shared library files this load command also contains
 171    offsets and sizes to the pool of relocation entries for all sections
 172    separated into two groups:
 173        external relocation entries
 174        local relocation entries
 175    For executable and object modules the relocation entries continue to hang
 176    off the section structures.  */
 177
 178 typedef struct bfd_mach_o_dylib_module
 179 {
 180   /* Index into the string table indicating the name of the module.  */
 181   unsigned long module_name_idx;
 182   char *module_name;
 183
 184   /* Index into the symbol table of the first defined external symbol provided
 185      by the module.  */
 186   unsigned long iextdefsym;
 187
 188   /* Number of external symbols provided by this module.  */
 189   unsigned long nextdefsym;
 190
 191   /* Index into the external reference table of the first entry
 192      provided by this module.  */
 193   unsigned long irefsym;
 194
 195   /* Number of external reference entries provided by this module.  */
 196   unsigned long nrefsym;
 197
 198   /* Index into the symbol table of the first local symbol provided by this
 199      module.  */
 200   unsigned long ilocalsym;
 201
 202   /* Number of local symbols provided by this module.  */
 203   unsigned long nlocalsym;
 204
 205   /* Index into the external relocation table of the first entry provided
 206      by this module.  */
 207   unsigned long iextrel;
 208
 209   /* Number of external relocation entries provided by this module.  */
 210   unsigned long nextrel;
 211
 212   /* Index in the module initialization section to the pointers for this
 213      module.  */
 214   unsigned short iinit;
 215
 216   /* Index in the module termination section to the pointers for this
 217      module.  */
 218   unsigned short iterm;
 219
 220   /* Number of pointers in the module initialization for this module.  */
 221   unsigned short ninit;
 222
 223   /* Number of pointers in the module termination for this module.  */
 224   unsigned short nterm;
 225
 226   /* Number of data byte for this module that are used in the __module_info
 227      section of the __OBJC segment.  */
 228   unsigned long objc_module_info_size;
 229
 230   /* Statically linked address of the start of the data for this module
 231      in the __module_info section of the __OBJC_segment.  */
 232   bfd_vma objc_module_info_addr;
 233 }
 234 bfd_mach_o_dylib_module;
 235
 236 typedef struct bfd_mach_o_dylib_table_of_content
 237 {
 238   /* Index into the symbol table to the defined external symbol.  */
 239   unsigned long symbol_index;
 240
 241   /* Index into the module table to the module for this entry.  */
 242   unsigned long module_index;
 243 }
 244 bfd_mach_o_dylib_table_of_content;
 245
 246 typedef struct bfd_mach_o_dylib_reference
 247 {
 248   /* Index into the symbol table for the symbol being referenced.  */
 249   unsigned long isym;
 250
 251   /* Type of the reference being made (use REFERENCE_FLAGS constants).  */
 252   unsigned long flags;
 253 }
 254 bfd_mach_o_dylib_reference;
 255 #define BFD_MACH_O_REFERENCE_SIZE 4
 256
 257 typedef struct bfd_mach_o_dysymtab_command
 258 {
 259   /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
 260      are grouped into the following three groups:
 261        local symbols (further grouped by the module they are from)
 262        defined external symbols (further grouped by the module they are from)
 263        undefined symbols
 264
 265      The local symbols are used only for debugging.  The dynamic binding
 266      process may have to use them to indicate to the debugger the local
 267      symbols for a module that is being bound.
 268
 269      The last two groups are used by the dynamic binding process to do the
 270      binding (indirectly through the module table and the reference symbol
 271      table when this is a dynamically linked shared library file).  */
 272
 273   unsigned long ilocalsym;    /* Index to local symbols.  */
 274   unsigned long nlocalsym;    /* Number of local symbols.  */
 275   unsigned long iextdefsym;   /* Index to externally defined symbols.  */
 276   unsigned long nextdefsym;   /* Number of externally defined symbols.  */
 277   unsigned long iundefsym;    /* Index to undefined symbols.  */
 278   unsigned long nundefsym;    /* Number of undefined symbols.  */
 279
 280   /* For the for the dynamic binding process to find which module a symbol
 281      is defined in the table of contents is used (analogous to the ranlib
 282      structure in an archive) which maps defined external symbols to modules
 283      they are defined in.  This exists only in a dynamically linked shared
 284      library file.  For executable and object modules the defined external
 285      symbols are sorted by name and is use as the table of contents.  */
 286
 287   unsigned long tocoff;       /* File offset to table of contents.  */
 288   unsigned long ntoc;         /* Number of entries in table of contents.  */
 289
 290   /* To support dynamic binding of "modules" (whole object files) the symbol
 291      table must reflect the modules that the file was created from.  This is
 292      done by having a module table that has indexes and counts into the merged
 293      tables for each module.  The module structure that these two entries
 294      refer to is described below.  This exists only in a dynamically linked
 295      shared library file.  For executable and object modules the file only
 296      contains one module so everything in the file belongs to the module.  */
 297
 298   unsigned long modtaboff;    /* File offset to module table.  */
 299   unsigned long nmodtab;      /* Number of module table entries.  */
 300
 301   /* To support dynamic module binding the module structure for each module
 302      indicates the external references (defined and undefined) each module
 303      makes.  For each module there is an offset and a count into the
 304      reference symbol table for the symbols that the module references.
 305      This exists only in a dynamically linked shared library file.  For
 306      executable and object modules the defined external symbols and the
 307      undefined external symbols indicates the external references.  */
 308
 309   unsigned long extrefsymoff;  /* Offset to referenced symbol table.  */
 310   unsigned long nextrefsyms;   /* Number of referenced symbol table entries.  */
 311
 312   /* The sections that contain "symbol pointers" and "routine stubs" have
 313      indexes and (implied counts based on the size of the section and fixed
 314      size of the entry) into the "indirect symbol" table for each pointer
 315      and stub.  For every section of these two types the index into the
 316      indirect symbol table is stored in the section header in the field
 317      reserved1.  An indirect symbol table entry is simply a 32bit index into
 318      the symbol table to the symbol that the pointer or stub is referring to.
 319      The indirect symbol table is ordered to match the entries in the section.  */
 320
 321   unsigned long indirectsymoff; /* File offset to the indirect symbol table.  */
 322   unsigned long nindirectsyms;  /* Number of indirect symbol table entries.  */
 323
 324   /* To support relocating an individual module in a library file quickly the
 325      external relocation entries for each module in the library need to be
 326      accessed efficiently.  Since the relocation entries can't be accessed
 327      through the section headers for a library file they are separated into
 328      groups of local and external entries further grouped by module.  In this
 329      case the presents of this load command who's extreloff, nextrel,
 330      locreloff and nlocrel fields are non-zero indicates that the relocation
 331      entries of non-merged sections are not referenced through the section
 332      structures (and the reloff and nreloc fields in the section headers are
 333      set to zero).
 334
 335      Since the relocation entries are not accessed through the section headers
 336      this requires the r_address field to be something other than a section
 337      offset to identify the item to be relocated.  In this case r_address is
 338      set to the offset from the vmaddr of the first LC_SEGMENT command.
 339
 340      The relocation entries are grouped by module and the module table
 341      entries have indexes and counts into them for the group of external
 342      relocation entries for that the module.
 343
 344      For sections that are merged across modules there must not be any
 345      remaining external relocation entries for them (for merged sections
 346      remaining relocation entries must be local).  */
 347
 348   unsigned long extreloff;    /* Offset to external relocation entries.  */
 349   unsigned long nextrel;      /* Number of external relocation entries.  */
 350
 351   /* All the local relocation entries are grouped together (they are not
 352      grouped by their module since they are only used if the object is moved
 353      from it statically link edited address).  */
 354
 355   unsigned long locreloff;    /* Offset to local relocation entries.  */
 356   unsigned long nlocrel;      /* Number of local relocation entries.  */
 357
 358   bfd_mach_o_dylib_module *dylib_module;
 359   bfd_mach_o_dylib_table_of_content *dylib_toc;
 360   unsigned int *indirect_syms;
 361   bfd_mach_o_dylib_reference *ext_refs;
 362 }
 363 bfd_mach_o_dysymtab_command;
 364
 365 /* An indirect symbol table entry is simply a 32bit index into the symbol table
 366    to the symbol that the pointer or stub is refering to.  Unless it is for a
 367    non-lazy symbol pointer section for a defined symbol which strip(1) has
 368    removed.  In which case it has the value INDIRECT_SYMBOL_LOCAL.  If the
 369    symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that.  */
 370
 371 #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000
 372 #define BFD_MACH_O_INDIRECT_SYMBOL_ABS   0x40000000
 373 #define BFD_MACH_O_INDIRECT_SYMBOL_SIZE  4
 374
 375 /* For LC_THREAD or LC_UNIXTHREAD.  */
 376
 377 typedef struct bfd_mach_o_thread_flavour
 378 {
 379   unsigned long flavour;
 380   unsigned long offset;
 381   unsigned long size;
 382 }
 383 bfd_mach_o_thread_flavour;
 384
 385 typedef struct bfd_mach_o_thread_command
 386 {
 387   unsigned long nflavours;
 388   bfd_mach_o_thread_flavour *flavours;
 389   asection *section;
 390 }
 391 bfd_mach_o_thread_command;
 392
 393 /* For LC_LOAD_DYLINKER and LC_ID_DYLINKER.  */
 394
 395 typedef struct bfd_mach_o_dylinker_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   char *name_str;
 400 }
 401 bfd_mach_o_dylinker_command;
 402
 403 /* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB
 404    or LC_REEXPORT_DYLIB.  */
 405
 406 typedef struct bfd_mach_o_dylib_command
 407 {
 408   unsigned long name_offset;           /* Offset to library's path name.  */
 409   unsigned long name_len;              /* Offset to library's path name.  */
 410   unsigned long timestamp;             /* Library's build time stamp.  */
 411   unsigned long current_version;       /* Library's current version number.  */
 412   unsigned long compatibility_version; /* Library's compatibility vers number.  */
 413   char *name_str;
 414 }
 415 bfd_mach_o_dylib_command;
 416
 417 /* For LC_PREBOUND_DYLIB.  */
 418
 419 typedef struct bfd_mach_o_prebound_dylib_command
 420 {
 421   unsigned long name;                /* Library's path name.  */
 422   unsigned long nmodules;            /* Number of modules in library.  */
 423   unsigned long linked_modules;      /* Bit vector of linked modules.  */
 424 }
 425 bfd_mach_o_prebound_dylib_command;
 426
 427 /* For LC_UUID.  */
 428
 429 typedef struct bfd_mach_o_uuid_command
 430 {
 431   unsigned char uuid[16];
 432 }
 433 bfd_mach_o_uuid_command;
 434
 435 /* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO.  */
 436
 437 typedef struct bfd_mach_o_linkedit_command
 438 {
 439   unsigned long dataoff;
 440   unsigned long datasize;
 441 }
 442 bfd_mach_o_linkedit_command;
 443
 444 typedef struct bfd_mach_o_str_command
 445 {
 446   unsigned long stroff;
 447   unsigned long str_len;
 448   char *str;
 449 }
 450 bfd_mach_o_str_command;
 451
 452 typedef struct bfd_mach_o_dyld_info_command
 453 {
 454   /* File offset and size to rebase info.  */
 455   unsigned int rebase_off;
 456   unsigned int rebase_size;
 457
 458   /* File offset and size of binding info.  */
 459   unsigned int bind_off;
 460   unsigned int bind_size;
 461
 462   /* File offset and size of weak binding info.  */
 463   unsigned int weak_bind_off;
 464   unsigned int weak_bind_size;
 465
 466   /* File offset and size of lazy binding info.  */
 467   unsigned int lazy_bind_off;
 468   unsigned int lazy_bind_size;
 469
 470   /* File offset and size of export info.  */
 471   unsigned int export_off;
 472   unsigned int export_size;
 473 }
 474 bfd_mach_o_dyld_info_command;
 475
 476 typedef struct bfd_mach_o_version_min_command
 477 {
 478   unsigned char rel;
 479   unsigned char maj;
 480   unsigned char min;
 481   unsigned int reserved;
 482 }
 483 bfd_mach_o_version_min_command;
 484
 485 typedef struct bfd_mach_o_load_command
 486 {
 487   bfd_mach_o_load_command_type type;
 488   bfd_boolean type_required;
 489   unsigned int offset;
 490   unsigned int len;
 491   union
 492   {
 493     bfd_mach_o_segment_command segment;
 494     bfd_mach_o_symtab_command symtab;
 495     bfd_mach_o_dysymtab_command dysymtab;
 496     bfd_mach_o_thread_command thread;
 497     bfd_mach_o_dylib_command dylib;
 498     bfd_mach_o_dylinker_command dylinker;
 499     bfd_mach_o_prebound_dylib_command prebound_dylib;
 500     bfd_mach_o_uuid_command uuid;
 501     bfd_mach_o_linkedit_command linkedit;
 502     bfd_mach_o_str_command str;
 503     bfd_mach_o_dyld_info_command dyld_info;
 504     bfd_mach_o_version_min_command version_min;
 505   }
 506   command;
 507 }
 508 bfd_mach_o_load_command;
 509
 510 typedef struct mach_o_data_struct
 511 {
 512   /* Mach-O header.  */
 513   bfd_mach_o_header header;
 514   /* Array of load commands (length is given by header.ncmds).  */
 515   bfd_mach_o_load_command *commands;
 516
 517   /* Flatten array of sections.  The array is 0-based.  */
 518   unsigned long nsects;
 519   bfd_mach_o_section **sections;
 520
 521   /* Used while writing: current length of the output file.  This is used
 522      to allocate space in the file.  */
 523   ufile_ptr filelen;
 524
 525   /* As symtab is referenced by other load command, it is handy to have
 526      a direct access to it.  Although it is not clearly stated, only one symtab
 527      is expected.  */
 528   bfd_mach_o_symtab_command *symtab;
 529   bfd_mach_o_dysymtab_command *dysymtab;
 530
 531   /* Base values used for building the dysymtab for a single-module object.  */
 532   unsigned long nlocal;
 533   unsigned long ndefext;
 534   unsigned long nundefext;
 535
 536   /* If this is non-zero, then the pointer below is populated.  */
 537   unsigned long nindirect;
 538   /* A set of synthetic symbols representing the 'indirect' ones in the file.
 539      These should be sorted (a) by the section they represent and (b) by the
 540      order that they appear within each section.  */
 541   asymbol **indirect_syms;
 542
 543   /* A place to stash dwarf2 info for this bfd.  */
 544   void *dwarf2_find_line_info;
 545
 546   /* BFD of .dSYM file. */
 547   bfd *dsym_bfd;
 548
 549   /* Cache of dynamic relocs. */
 550   arelent *dyn_reloc_cache;
 551 }
 552 bfd_mach_o_data_struct;
 553
 554 typedef struct bfd_mach_o_xlat_name
 555 {
 556   const char *name;
 557   unsigned long val;
 558 }
 559 bfd_mach_o_xlat_name;
 560
 561 /* Target specific routines.  */
 562
 563 #define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data)
 564 #define bfd_mach_o_get_backend_data(abfd) \
 565   ((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data)
 566
 567 /* Get the Mach-O header for section SEC.  */
 568 #define bfd_mach_o_get_mach_o_section(sec) \
 569   ((bfd_mach_o_section *)(sec)->used_by_bfd)
 570
 571 bfd_boolean bfd_mach_o_valid (bfd *);
 572 bfd_boolean bfd_mach_o_mkobject_init (bfd *);
 573 const bfd_target *bfd_mach_o_object_p (bfd *);
 574 const bfd_target *bfd_mach_o_core_p (bfd *);
 575 const bfd_target *bfd_mach_o_archive_p (bfd *);
 576 bfd *bfd_mach_o_openr_next_archived_file (bfd *, bfd *);
 577 bfd_boolean bfd_mach_o_set_arch_mach (bfd *, enum bfd_architecture,
 578                                       unsigned long);
 579 int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **);
 580 bfd_boolean bfd_mach_o_new_section_hook (bfd *, asection *);
 581 bfd_boolean bfd_mach_o_write_contents (bfd *);
 582 bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *,
 583                                                      bfd *, asymbol *);
 584 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *,
 585                                                       bfd *, asection *);
 586 bfd_boolean bfd_mach_o_bfd_copy_private_bfd_data (bfd *, bfd *);
 587 bfd_boolean bfd_mach_o_bfd_set_private_flags (bfd *, flagword);
 588 long bfd_mach_o_get_symtab_upper_bound (bfd *);
 589 long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **);
 590 long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long,
 591                                       asymbol **, asymbol **ret);
 592 long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *);
 593 long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **);
 594 long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *);
 595 long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
 596 asymbol *bfd_mach_o_make_empty_symbol (bfd *);
 597 void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *);
 598 void bfd_mach_o_print_symbol (bfd *, PTR, asymbol *, bfd_print_symbol_type);
 599 int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *);
 600 unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type);
 601 int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *);
 602 char *bfd_mach_o_core_file_failing_command (bfd *);
 603 int bfd_mach_o_core_file_failing_signal (bfd *);
 604 bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
 605 bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
 606 const bfd_target *bfd_mach_o_header_p (bfd *, bfd_mach_o_filetype,
 607                                        bfd_mach_o_cpu_type);
 608 bfd_boolean bfd_mach_o_build_commands (bfd *);
 609 bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
 610                                              file_ptr, bfd_size_type);
 611 unsigned int bfd_mach_o_version (bfd *);
 612
 613 unsigned int bfd_mach_o_get_section_type_from_name (bfd *, const char *);
 614 unsigned int bfd_mach_o_get_section_attribute_from_name (const char *);
 615
 616 void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *,
 617                                              const char **, flagword *);
 618 bfd_boolean bfd_mach_o_find_nearest_line (bfd *, asection *, asymbol **,
 619                                           bfd_vma, const char **,
 620                                           const char **, unsigned int *);
 621 bfd_boolean bfd_mach_o_close_and_cleanup (bfd *);
 622 bfd_boolean bfd_mach_o_free_cached_info (bfd *);
 623
 624 unsigned int bfd_mach_o_section_get_nbr_indirect (bfd *, bfd_mach_o_section *);
 625 unsigned int bfd_mach_o_section_get_entry_size (bfd *, bfd_mach_o_section *);
 626 bfd_boolean bfd_mach_o_read_symtab_symbols (bfd *);
 627 bfd_boolean bfd_mach_o_read_symtab_strtab (bfd *abfd);
 628
 629 /* A placeholder in case we need to suppress emitting the dysymtab for some
 630    reason (e.g. compatibility with older system versions).  */
 631 #define bfd_mach_o_should_emit_dysymtab(x) TRUE
 632
 633 extern const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[];
 634 extern const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[];
 635
 636 extern const bfd_target mach_o_fat_vec;
 637
 638 /* Interfaces between BFD names and Mach-O names.  */
 639
 640 typedef struct mach_o_section_name_xlat
 641 {
 642   const char *bfd_name;
 643   const char *mach_o_name;
 644   flagword bfd_flags;
 645   unsigned int macho_sectype;
 646   unsigned int macho_secattr;
 647   unsigned int sectalign;
 648 } mach_o_section_name_xlat;
 649
 650 typedef struct mach_o_segment_name_xlat
 651 {
 652   const char *segname;
 653   const mach_o_section_name_xlat *sections;
 654 } mach_o_segment_name_xlat;
 655
 656 const mach_o_section_name_xlat *
 657 bfd_mach_o_section_data_for_mach_sect (bfd *, const char *, const char *);
 658 const mach_o_section_name_xlat *
 659 bfd_mach_o_section_data_for_bfd_name (bfd *, const char *, const char **);
 660
 661 typedef struct bfd_mach_o_backend_data
 662 {
 663   enum bfd_architecture arch;
 664   bfd_boolean (*_bfd_mach_o_swap_reloc_in)(arelent *, bfd_mach_o_reloc_info *);
 665   bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *);
 666   bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
 667                                           void *, char *);
 668   const mach_o_segment_name_xlat *segsec_names_xlat;
 669   bfd_boolean (*bfd_mach_o_section_type_valid_for_target) (unsigned long);
 670 }
 671 bfd_mach_o_backend_data;
 672
 673 /* Symbol type tests.  */
 674
 675 #define IS_MACHO_INDIRECT(x) (((x) & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_INDR)
 676
 677 #endif /* _BFD_MACH_O_H_ */