1 /* Mach-O support for BFD.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
21 #ifndef _BFD_MACH_O_H_
22 #define _BFD_MACH_O_H_
25 #include "mach-o/loader.h"
26 #include "mach-o/external.h"
32 typedef struct bfd_mach_o_header
35 unsigned long cputype;
36 unsigned long cpusubtype;
37 unsigned long filetype;
39 unsigned long sizeofcmds;
41 unsigned int reserved;
42 /* Version 1: 32 bits, version 2: 64 bits. */
44 enum bfd_endian byteorder;
48 typedef struct bfd_mach_o_asymbol
50 /* The actual symbol which the rest of BFD works with. */
53 /* Mach-O symbol fields. */
56 unsigned short n_desc;
60 #define BFD_MACH_O_SEGNAME_SIZE 16
61 #define BFD_MACH_O_SECTNAME_SIZE 16
63 typedef struct bfd_mach_o_section
65 /* Fields present in the file. */
66 char sectname[BFD_MACH_O_SECTNAME_SIZE + 1]; /* Always NUL padded. */
67 char segname[BFD_MACH_O_SEGNAME_SIZE + 1];
75 unsigned long reserved1;
76 unsigned long reserved2;
77 unsigned long reserved3;
79 /* Corresponding bfd section. */
82 /* An array holding the indirect symbols for this section.
83 NULL values indicate local symbols.
84 The number of symbols is determined from the section size and type. */
86 bfd_mach_o_asymbol **indirect_syms;
88 /* Simply linked list. */
89 struct bfd_mach_o_section *next;
93 typedef struct bfd_mach_o_segment_command
95 char segname[BFD_MACH_O_SEGNAME_SIZE + 1];
99 unsigned long filesize;
100 unsigned long maxprot; /* Maximum permitted protection. */
101 unsigned long initprot; /* Initial protection. */
102 unsigned long nsects;
105 /* Linked list of sections. */
106 bfd_mach_o_section *sect_head;
107 bfd_mach_o_section *sect_tail;
109 bfd_mach_o_segment_command;
111 /* Protection flags. */
112 #define BFD_MACH_O_PROT_READ 0x01
113 #define BFD_MACH_O_PROT_WRITE 0x02
114 #define BFD_MACH_O_PROT_EXECUTE 0x04
116 /* Expanded internal representation of a relocation entry. */
117 typedef struct bfd_mach_o_reloc_info
121 unsigned int r_scattered : 1;
122 unsigned int r_type : 4;
123 unsigned int r_pcrel : 1;
124 unsigned int r_length : 2;
125 unsigned int r_extern : 1;
127 bfd_mach_o_reloc_info;
129 /* The symbol table is sorted like this:
131 (otherwise in order of generation)
134 (3) external undefined / common
138 typedef struct bfd_mach_o_symtab_command
143 unsigned int strsize;
144 bfd_mach_o_asymbol *symbols;
147 bfd_mach_o_symtab_command;
149 /* This is the second set of the symbolic information which is used to support
150 the data structures for the dynamically link editor.
152 The original set of symbolic information in the symtab_command which contains
153 the symbol and string tables must also be present when this load command is
154 present. When this load command is present the symbol table is organized
155 into three groups of symbols:
156 local symbols (static and debugging symbols) - grouped by module
157 defined external symbols - grouped by module (sorted by name if not lib)
158 undefined external symbols (sorted by name)
159 In this load command there are offsets and counts to each of the three groups
162 This load command contains a the offsets and sizes of the following new
163 symbolic information tables:
166 reference symbol table
167 indirect symbol table
168 The first three tables above (the table of contents, module table and
169 reference symbol table) are only present if the file is a dynamically linked
170 shared library. For executable and object modules, which are files
171 containing only one module, the information that would be in these three
172 tables is determined as follows:
173 table of contents - the defined external symbols are sorted by name
174 module table - the file contains only one module so everything in the
175 file is part of the module.
176 reference symbol table - is the defined and undefined external symbols
178 For dynamically linked shared library files this load command also contains
179 offsets and sizes to the pool of relocation entries for all sections
180 separated into two groups:
181 external relocation entries
182 local relocation entries
183 For executable and object modules the relocation entries continue to hang
184 off the section structures. */
186 typedef struct bfd_mach_o_dylib_module
188 /* Index into the string table indicating the name of the module. */
189 unsigned long module_name_idx;
192 /* Index into the symbol table of the first defined external symbol provided
194 unsigned long iextdefsym;
196 /* Number of external symbols provided by this module. */
197 unsigned long nextdefsym;
199 /* Index into the external reference table of the first entry
200 provided by this module. */
201 unsigned long irefsym;
203 /* Number of external reference entries provided by this module. */
204 unsigned long nrefsym;
206 /* Index into the symbol table of the first local symbol provided by this
208 unsigned long ilocalsym;
210 /* Number of local symbols provided by this module. */
211 unsigned long nlocalsym;
213 /* Index into the external relocation table of the first entry provided
215 unsigned long iextrel;
217 /* Number of external relocation entries provided by this module. */
218 unsigned long nextrel;
220 /* Index in the module initialization section to the pointers for this
222 unsigned short iinit;
224 /* Index in the module termination section to the pointers for this
226 unsigned short iterm;
228 /* Number of pointers in the module initialization for this module. */
229 unsigned short ninit;
231 /* Number of pointers in the module termination for this module. */
232 unsigned short nterm;
234 /* Number of data byte for this module that are used in the __module_info
235 section of the __OBJC segment. */
236 unsigned long objc_module_info_size;
238 /* Statically linked address of the start of the data for this module
239 in the __module_info section of the __OBJC_segment. */
240 bfd_vma objc_module_info_addr;
242 bfd_mach_o_dylib_module;
244 typedef struct bfd_mach_o_dylib_table_of_content
246 /* Index into the symbol table to the defined external symbol. */
247 unsigned long symbol_index;
249 /* Index into the module table to the module for this entry. */
250 unsigned long module_index;
252 bfd_mach_o_dylib_table_of_content;
254 typedef struct bfd_mach_o_dylib_reference
256 /* Index into the symbol table for the symbol being referenced. */
259 /* Type of the reference being made (use REFERENCE_FLAGS constants). */
262 bfd_mach_o_dylib_reference;
263 #define BFD_MACH_O_REFERENCE_SIZE 4
265 typedef struct bfd_mach_o_dysymtab_command
267 /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command
268 are grouped into the following three groups:
269 local symbols (further grouped by the module they are from)
270 defined external symbols (further grouped by the module they are from)
273 The local symbols are used only for debugging. The dynamic binding
274 process may have to use them to indicate to the debugger the local
275 symbols for a module that is being bound.
277 The last two groups are used by the dynamic binding process to do the
278 binding (indirectly through the module table and the reference symbol
279 table when this is a dynamically linked shared library file). */
281 unsigned long ilocalsym; /* Index to local symbols. */
282 unsigned long nlocalsym; /* Number of local symbols. */
283 unsigned long iextdefsym; /* Index to externally defined symbols. */
284 unsigned long nextdefsym; /* Number of externally defined symbols. */
285 unsigned long iundefsym; /* Index to undefined symbols. */
286 unsigned long nundefsym; /* Number of undefined symbols. */
288 /* For the for the dynamic binding process to find which module a symbol
289 is defined in the table of contents is used (analogous to the ranlib
290 structure in an archive) which maps defined external symbols to modules
291 they are defined in. This exists only in a dynamically linked shared
292 library file. For executable and object modules the defined external
293 symbols are sorted by name and is use as the table of contents. */
295 unsigned long tocoff; /* File offset to table of contents. */
296 unsigned long ntoc; /* Number of entries in table of contents. */
298 /* To support dynamic binding of "modules" (whole object files) the symbol
299 table must reflect the modules that the file was created from. This is
300 done by having a module table that has indexes and counts into the merged
301 tables for each module. The module structure that these two entries
302 refer to is described below. This exists only in a dynamically linked
303 shared library file. For executable and object modules the file only
304 contains one module so everything in the file belongs to the module. */
306 unsigned long modtaboff; /* File offset to module table. */
307 unsigned long nmodtab; /* Number of module table entries. */
309 /* To support dynamic module binding the module structure for each module
310 indicates the external references (defined and undefined) each module
311 makes. For each module there is an offset and a count into the
312 reference symbol table for the symbols that the module references.
313 This exists only in a dynamically linked shared library file. For
314 executable and object modules the defined external symbols and the
315 undefined external symbols indicates the external references. */
317 unsigned long extrefsymoff; /* Offset to referenced symbol table. */
318 unsigned long nextrefsyms; /* Number of referenced symbol table entries. */
320 /* The sections that contain "symbol pointers" and "routine stubs" have
321 indexes and (implied counts based on the size of the section and fixed
322 size of the entry) into the "indirect symbol" table for each pointer
323 and stub. For every section of these two types the index into the
324 indirect symbol table is stored in the section header in the field
325 reserved1. An indirect symbol table entry is simply a 32bit index into
326 the symbol table to the symbol that the pointer or stub is referring to.
327 The indirect symbol table is ordered to match the entries in the section. */
329 unsigned long indirectsymoff; /* File offset to the indirect symbol table. */
330 unsigned long nindirectsyms; /* Number of indirect symbol table entries. */
332 /* To support relocating an individual module in a library file quickly the
333 external relocation entries for each module in the library need to be
334 accessed efficiently. Since the relocation entries can't be accessed
335 through the section headers for a library file they are separated into
336 groups of local and external entries further grouped by module. In this
337 case the presents of this load command who's extreloff, nextrel,
338 locreloff and nlocrel fields are non-zero indicates that the relocation
339 entries of non-merged sections are not referenced through the section
340 structures (and the reloff and nreloc fields in the section headers are
343 Since the relocation entries are not accessed through the section headers
344 this requires the r_address field to be something other than a section
345 offset to identify the item to be relocated. In this case r_address is
346 set to the offset from the vmaddr of the first LC_SEGMENT command.
348 The relocation entries are grouped by module and the module table
349 entries have indexes and counts into them for the group of external
350 relocation entries for that the module.
352 For sections that are merged across modules there must not be any
353 remaining external relocation entries for them (for merged sections
354 remaining relocation entries must be local). */
356 unsigned long extreloff; /* Offset to external relocation entries. */
357 unsigned long nextrel; /* Number of external relocation entries. */
359 /* All the local relocation entries are grouped together (they are not
360 grouped by their module since they are only used if the object is moved
361 from it statically link edited address). */
363 unsigned long locreloff; /* Offset to local relocation entries. */
364 unsigned long nlocrel; /* Number of local relocation entries. */
366 bfd_mach_o_dylib_module *dylib_module;
367 bfd_mach_o_dylib_table_of_content *dylib_toc;
368 unsigned int *indirect_syms;
369 bfd_mach_o_dylib_reference *ext_refs;
371 bfd_mach_o_dysymtab_command;
373 /* An indirect symbol table entry is simply a 32bit index into the symbol table
374 to the symbol that the pointer or stub is refering to. Unless it is for a
375 non-lazy symbol pointer section for a defined symbol which strip(1) has
376 removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the
377 symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */
379 #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000
380 #define BFD_MACH_O_INDIRECT_SYMBOL_ABS 0x40000000
381 #define BFD_MACH_O_INDIRECT_SYMBOL_SIZE 4
383 /* For LC_TWOLEVEL_HINTS. */
385 typedef struct bfd_mach_o_twolevel_hints_command
387 /* Offset to the hint table. */
390 /* Number of entries in the table. */
393 bfd_mach_o_twolevel_hints_command;
395 /* For LC_PREBIND_CKSUM. */
397 typedef struct bfd_mach_o_prebind_cksum_command
399 /* Checksum or zero. */
402 bfd_mach_o_prebind_cksum_command;
404 /* For LC_THREAD or LC_UNIXTHREAD. */
406 typedef struct bfd_mach_o_thread_flavour
408 unsigned long flavour;
409 unsigned long offset;
412 bfd_mach_o_thread_flavour;
414 typedef struct bfd_mach_o_thread_command
416 unsigned long nflavours;
417 bfd_mach_o_thread_flavour *flavours;
420 bfd_mach_o_thread_command;
422 /* For LC_LOAD_DYLINKER and LC_ID_DYLINKER. */
424 typedef struct bfd_mach_o_dylinker_command
426 unsigned int name_offset; /* Offset to library's path name. */
429 bfd_mach_o_dylinker_command;
431 /* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB
432 or LC_REEXPORT_DYLIB. */
434 typedef struct bfd_mach_o_dylib_command
436 unsigned int name_offset; /* Offset to library's path name. */
437 unsigned long timestamp; /* Library's build time stamp. */
438 unsigned long current_version; /* Library's current version number. */
439 unsigned long compatibility_version; /* Library's compatibility vers number. */
442 bfd_mach_o_dylib_command;
444 /* For LC_PREBOUND_DYLIB. */
446 typedef struct bfd_mach_o_prebound_dylib_command
448 unsigned int name_offset; /* Library's path name. */
449 unsigned int nmodules; /* Number of modules in library. */
450 unsigned int linked_modules_offset; /* Bit vector of linked modules. */
453 unsigned char *linked_modules;
455 bfd_mach_o_prebound_dylib_command;
459 typedef struct bfd_mach_o_uuid_command
461 unsigned char uuid[16];
463 bfd_mach_o_uuid_command;
465 /* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO. */
467 typedef struct bfd_mach_o_linkedit_command
469 unsigned long dataoff;
470 unsigned long datasize;
472 bfd_mach_o_linkedit_command;
474 typedef struct bfd_mach_o_str_command
476 unsigned long stroff;
477 unsigned long str_len;
480 bfd_mach_o_str_command;
482 typedef struct bfd_mach_o_fvmlib_command
484 unsigned int name_offset;
486 unsigned int minor_version;
487 unsigned int header_addr;
489 bfd_mach_o_fvmlib_command;
491 typedef struct bfd_mach_o_dyld_info_command
493 /* File offset and size to rebase info. */
494 unsigned int rebase_off;
495 unsigned int rebase_size;
496 unsigned char *rebase_content;
498 /* File offset and size of binding info. */
499 unsigned int bind_off;
500 unsigned int bind_size;
501 unsigned char *bind_content;
503 /* File offset and size of weak binding info. */
504 unsigned int weak_bind_off;
505 unsigned int weak_bind_size;
506 unsigned char *weak_bind_content;
508 /* File offset and size of lazy binding info. */
509 unsigned int lazy_bind_off;
510 unsigned int lazy_bind_size;
511 unsigned char *lazy_bind_content;
513 /* File offset and size of export info. */
514 unsigned int export_off;
515 unsigned int export_size;
516 unsigned char *export_content;
518 bfd_mach_o_dyld_info_command;
520 typedef struct bfd_mach_o_version_min_command
525 unsigned int reserved;
527 bfd_mach_o_version_min_command;
529 typedef struct bfd_mach_o_encryption_info_command
531 unsigned int cryptoff;
532 unsigned int cryptsize;
533 unsigned int cryptid;
535 bfd_mach_o_encryption_info_command;
537 typedef struct bfd_mach_o_main_command
539 bfd_uint64_t entryoff;
540 bfd_uint64_t stacksize;
542 bfd_mach_o_main_command;
544 typedef struct bfd_mach_o_source_version_command
552 bfd_mach_o_source_version_command;
554 typedef struct bfd_mach_o_load_command
556 /* Next command in the single linked list. */
557 struct bfd_mach_o_load_command *next;
559 /* Type and required flag. */
560 bfd_mach_o_load_command_type type;
561 bfd_boolean type_required;
563 /* Offset and length in the file. */
569 bfd_mach_o_segment_command segment;
570 bfd_mach_o_symtab_command symtab;
571 bfd_mach_o_dysymtab_command dysymtab;
572 bfd_mach_o_thread_command thread;
573 bfd_mach_o_dylib_command dylib;
574 bfd_mach_o_dylinker_command dylinker;
575 bfd_mach_o_prebound_dylib_command prebound_dylib;
576 bfd_mach_o_prebind_cksum_command prebind_cksum;
577 bfd_mach_o_twolevel_hints_command twolevel_hints;
578 bfd_mach_o_uuid_command uuid;
579 bfd_mach_o_linkedit_command linkedit;
580 bfd_mach_o_str_command str;
581 bfd_mach_o_dyld_info_command dyld_info;
582 bfd_mach_o_version_min_command version_min;
583 bfd_mach_o_encryption_info_command encryption_info;
584 bfd_mach_o_fvmlib_command fvmlib;
585 bfd_mach_o_main_command main;
586 bfd_mach_o_source_version_command source_version;
589 bfd_mach_o_load_command;
591 typedef struct mach_o_data_struct
594 bfd_mach_o_header header;
596 /* File offset of the header. Usually this is 0. */
599 /* Array of load commands (length is given by header.ncmds). */
600 bfd_mach_o_load_command *first_command;
601 bfd_mach_o_load_command *last_command;
603 /* Flatten array of sections. The array is 0-based. */
604 unsigned long nsects;
605 bfd_mach_o_section **sections;
607 /* Used while writing: current length of the output file. This is used
608 to allocate space in the file. */
611 /* As symtab is referenced by other load command, it is handy to have
612 a direct access to it. Although it is not clearly stated, only one symtab
614 bfd_mach_o_symtab_command *symtab;
615 bfd_mach_o_dysymtab_command *dysymtab;
617 /* A place to stash dwarf2 info for this bfd. */
618 void *dwarf2_find_line_info;
620 /* BFD of .dSYM file. */
623 /* Cache of dynamic relocs. */
624 arelent *dyn_reloc_cache;
626 bfd_mach_o_data_struct;
628 typedef struct bfd_mach_o_xlat_name
633 bfd_mach_o_xlat_name;
635 /* Target specific routines. */
637 #define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data)
638 #define bfd_mach_o_get_backend_data(abfd) \
639 ((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data)
641 /* Get the Mach-O header for section SEC. */
642 #define bfd_mach_o_get_mach_o_section(sec) \
643 ((bfd_mach_o_section *)(sec)->used_by_bfd)
645 bfd_boolean bfd_mach_o_valid (bfd *);
646 bfd_boolean bfd_mach_o_mkobject_init (bfd *);
647 const bfd_target *bfd_mach_o_object_p (bfd *);
648 const bfd_target *bfd_mach_o_core_p (bfd *);
649 const bfd_target *bfd_mach_o_fat_archive_p (bfd *);
650 bfd *bfd_mach_o_fat_openr_next_archived_file (bfd *, bfd *);
651 bfd_boolean bfd_mach_o_set_arch_mach (bfd *, enum bfd_architecture,
653 int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **);
654 bfd_boolean bfd_mach_o_new_section_hook (bfd *, asection *);
655 bfd_boolean bfd_mach_o_write_contents (bfd *);
656 bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *,
658 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *,
660 bfd_boolean bfd_mach_o_bfd_copy_private_header_data (bfd *, bfd *);
661 bfd_boolean bfd_mach_o_bfd_set_private_flags (bfd *, flagword);
662 long bfd_mach_o_get_symtab_upper_bound (bfd *);
663 long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **);
664 long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long,
665 asymbol **, asymbol **ret);
666 long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *);
667 long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **);
668 long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *);
669 long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **);
670 asymbol *bfd_mach_o_make_empty_symbol (bfd *);
671 void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *);
672 void bfd_mach_o_print_symbol (bfd *, void *, asymbol *, bfd_print_symbol_type);
673 int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *);
674 unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type);
675 int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *);
676 char *bfd_mach_o_core_file_failing_command (bfd *);
677 int bfd_mach_o_core_file_failing_signal (bfd *);
678 bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
679 bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
680 const bfd_target *bfd_mach_o_header_p (bfd *, file_ptr, bfd_mach_o_filetype,
681 bfd_mach_o_cpu_type);
682 bfd_boolean bfd_mach_o_build_commands (bfd *);
683 bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *,
684 file_ptr, bfd_size_type);
685 unsigned int bfd_mach_o_version (bfd *);
687 unsigned int bfd_mach_o_get_section_type_from_name (bfd *, const char *);
688 unsigned int bfd_mach_o_get_section_attribute_from_name (const char *);
690 void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *,
691 const char **, flagword *);
692 bfd_boolean bfd_mach_o_find_nearest_line (bfd *, asymbol **,
694 const char **, const char **,
695 unsigned int *, unsigned int *);
696 #define bfd_mach_o_find_line _bfd_nosymbols_find_line
697 bfd_boolean bfd_mach_o_close_and_cleanup (bfd *);
698 bfd_boolean bfd_mach_o_free_cached_info (bfd *);
700 unsigned int bfd_mach_o_section_get_nbr_indirect (bfd *, bfd_mach_o_section *);
701 unsigned int bfd_mach_o_section_get_entry_size (bfd *, bfd_mach_o_section *);
702 bfd_boolean bfd_mach_o_read_symtab_symbols (bfd *);
703 bfd_boolean bfd_mach_o_read_symtab_strtab (bfd *abfd);
705 bfd_vma bfd_mach_o_get_base_address (bfd *);
707 void bfd_mach_o_swap_in_non_scattered_reloc (bfd *, bfd_mach_o_reloc_info *,
709 bfd_boolean bfd_mach_o_canonicalize_non_scattered_reloc (bfd *, bfd_mach_o_reloc_info *, arelent *, asymbol **);
710 bfd_boolean bfd_mach_o_pre_canonicalize_one_reloc (bfd *, struct mach_o_reloc_info_external *, bfd_mach_o_reloc_info *, arelent *, asymbol **);
712 /* A placeholder in case we need to suppress emitting the dysymtab for some
713 reason (e.g. compatibility with older system versions). */
714 #define bfd_mach_o_should_emit_dysymtab(x) TRUE
716 extern const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[];
717 extern const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[];
719 extern const bfd_target mach_o_fat_vec;
721 /* Interfaces between BFD names and Mach-O names. */
723 typedef struct mach_o_section_name_xlat
725 const char *bfd_name;
726 const char *mach_o_name;
728 unsigned int macho_sectype;
729 unsigned int macho_secattr;
730 unsigned int sectalign;
731 } mach_o_section_name_xlat;
733 typedef struct mach_o_segment_name_xlat
736 const mach_o_section_name_xlat *sections;
737 } mach_o_segment_name_xlat;
739 const mach_o_section_name_xlat *
740 bfd_mach_o_section_data_for_mach_sect (bfd *, const char *, const char *);
741 const mach_o_section_name_xlat *
742 bfd_mach_o_section_data_for_bfd_name (bfd *, const char *, const char **);
744 typedef struct bfd_mach_o_backend_data
746 enum bfd_architecture arch;
748 bfd_boolean (*_bfd_mach_o_canonicalize_one_reloc)
749 (bfd *, struct mach_o_reloc_info_external *, arelent *, asymbol **);
750 bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *);
751 bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
753 const mach_o_segment_name_xlat *segsec_names_xlat;
754 bfd_boolean (*bfd_mach_o_section_type_valid_for_target) (unsigned long);
756 bfd_mach_o_backend_data;
758 /* Values used in symbol.udata.i, to signal that the mach-o-specific data in the
759 symbol are not yet set, or need validation (where this is possible). */
761 #define SYM_MACHO_FIELDS_UNSET ((bfd_vma) -1)
762 #define SYM_MACHO_FIELDS_NOT_VALIDATED ((bfd_vma) -2)
768 #endif /* _BFD_MACH_O_H_ */