1 /* Mach-O support for BFD. 2 Copyright (C) 1999-2014 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 #ifndef _BFD_MACH_O_H_ 22 #define _BFD_MACH_O_H_ 23 24 #include "bfd.h" 25 #include "mach-o/loader.h" 26 27 typedef struct bfd_mach_o_header 28 { 29 unsigned long magic; 30 unsigned long cputype; 31 unsigned long cpusubtype; 32 unsigned long filetype; 33 unsigned long ncmds; 34 unsigned long sizeofcmds; 35 unsigned long flags; 36 unsigned int reserved; 37 /* Version 1: 32 bits, version 2: 64 bits. */ 38 unsigned int version; 39 enum bfd_endian byteorder; 40 } 41 bfd_mach_o_header; 42 43 typedef struct bfd_mach_o_asymbol 44 { 45 /* The actual symbol which the rest of BFD works with. */ 46 asymbol symbol; 47 48 /* Mach-O symbol fields. */ 49 unsigned char n_type; 50 unsigned char n_sect; 51 unsigned short n_desc; 52 } 53 bfd_mach_o_asymbol; 54 55 #define BFD_MACH_O_SEGNAME_SIZE 16 56 #define BFD_MACH_O_SECTNAME_SIZE 16 57 58 typedef struct bfd_mach_o_section 59 { 60 /* Fields present in the file. */ 61 char sectname[BFD_MACH_O_SECTNAME_SIZE + 1]; /* Always NUL padded. */ 62 char segname[BFD_MACH_O_SEGNAME_SIZE + 1]; 63 bfd_vma addr; 64 bfd_vma size; 65 bfd_vma offset; 66 unsigned long align; 67 bfd_vma reloff; 68 unsigned long nreloc; 69 unsigned long flags; 70 unsigned long reserved1; 71 unsigned long reserved2; 72 unsigned long reserved3; 73 74 /* Corresponding bfd section. */ 75 asection *bfdsection; 76 77 /* An array holding the indirect symbols for this section. 78 NULL values indicate local symbols. 79 The number of symbols is determined from the section size and type. */ 80 81 bfd_mach_o_asymbol **indirect_syms; 82 83 /* Simply linked list. */ 84 struct bfd_mach_o_section *next; 85 } 86 bfd_mach_o_section; 87 88 typedef struct bfd_mach_o_segment_command 89 { 90 char segname[BFD_MACH_O_SEGNAME_SIZE + 1]; 91 bfd_vma vmaddr; 92 bfd_vma vmsize; 93 bfd_vma fileoff; 94 unsigned long filesize; 95 unsigned long maxprot; /* Maximum permitted protection. */ 96 unsigned long initprot; /* Initial protection. */ 97 unsigned long nsects; 98 unsigned long flags; 99 100 /* Linked list of sections. */ 101 bfd_mach_o_section *sect_head; 102 bfd_mach_o_section *sect_tail; 103 } 104 bfd_mach_o_segment_command; 105 106 /* Protection flags. */ 107 #define BFD_MACH_O_PROT_READ 0x01 108 #define BFD_MACH_O_PROT_WRITE 0x02 109 #define BFD_MACH_O_PROT_EXECUTE 0x04 110 111 /* Expanded internal representation of a relocation entry. */ 112 typedef struct bfd_mach_o_reloc_info 113 { 114 bfd_vma r_address; 115 bfd_vma r_value; 116 unsigned int r_scattered : 1; 117 unsigned int r_type : 4; 118 unsigned int r_pcrel : 1; 119 unsigned int r_length : 2; 120 unsigned int r_extern : 1; 121 } 122 bfd_mach_o_reloc_info; 123 124 /* The symbol table is sorted like this: 125 (1) local. 126 (otherwise in order of generation) 127 (2) external defined 128 (sorted by name) 129 (3) external undefined / common 130 (sorted by name) 131 */ 132 133 typedef struct bfd_mach_o_symtab_command 134 { 135 unsigned int symoff; 136 unsigned int nsyms; 137 unsigned int stroff; 138 unsigned int strsize; 139 bfd_mach_o_asymbol *symbols; 140 char *strtab; 141 } 142 bfd_mach_o_symtab_command; 143 144 /* This is the second set of the symbolic information which is used to support 145 the data structures for the dynamically link editor. 146 147 The original set of symbolic information in the symtab_command which contains 148 the symbol and string tables must also be present when this load command is 149 present. When this load command is present the symbol table is organized 150 into three groups of symbols: 151 local symbols (static and debugging symbols) - grouped by module 152 defined external symbols - grouped by module (sorted by name if not lib) 153 undefined external symbols (sorted by name) 154 In this load command there are offsets and counts to each of the three groups 155 of symbols. 156 157 This load command contains a the offsets and sizes of the following new 158 symbolic information tables: 159 table of contents 160 module table 161 reference symbol table 162 indirect symbol table 163 The first three tables above (the table of contents, module table and 164 reference symbol table) are only present if the file is a dynamically linked 165 shared library. For executable and object modules, which are files 166 containing only one module, the information that would be in these three 167 tables is determined as follows: 168 table of contents - the defined external symbols are sorted by name 169 module table - the file contains only one module so everything in the 170 file is part of the module. 171 reference symbol table - is the defined and undefined external symbols 172 173 For dynamically linked shared library files this load command also contains 174 offsets and sizes to the pool of relocation entries for all sections 175 separated into two groups: 176 external relocation entries 177 local relocation entries 178 For executable and object modules the relocation entries continue to hang 179 off the section structures. */ 180 181 typedef struct bfd_mach_o_dylib_module 182 { 183 /* Index into the string table indicating the name of the module. */ 184 unsigned long module_name_idx; 185 char *module_name; 186 187 /* Index into the symbol table of the first defined external symbol provided 188 by the module. */ 189 unsigned long iextdefsym; 190 191 /* Number of external symbols provided by this module. */ 192 unsigned long nextdefsym; 193 194 /* Index into the external reference table of the first entry 195 provided by this module. */ 196 unsigned long irefsym; 197 198 /* Number of external reference entries provided by this module. */ 199 unsigned long nrefsym; 200 201 /* Index into the symbol table of the first local symbol provided by this 202 module. */ 203 unsigned long ilocalsym; 204 205 /* Number of local symbols provided by this module. */ 206 unsigned long nlocalsym; 207 208 /* Index into the external relocation table of the first entry provided 209 by this module. */ 210 unsigned long iextrel; 211 212 /* Number of external relocation entries provided by this module. */ 213 unsigned long nextrel; 214 215 /* Index in the module initialization section to the pointers for this 216 module. */ 217 unsigned short iinit; 218 219 /* Index in the module termination section to the pointers for this 220 module. */ 221 unsigned short iterm; 222 223 /* Number of pointers in the module initialization for this module. */ 224 unsigned short ninit; 225 226 /* Number of pointers in the module termination for this module. */ 227 unsigned short nterm; 228 229 /* Number of data byte for this module that are used in the __module_info 230 section of the __OBJC segment. */ 231 unsigned long objc_module_info_size; 232 233 /* Statically linked address of the start of the data for this module 234 in the __module_info section of the __OBJC_segment. */ 235 bfd_vma objc_module_info_addr; 236 } 237 bfd_mach_o_dylib_module; 238 239 typedef struct bfd_mach_o_dylib_table_of_content 240 { 241 /* Index into the symbol table to the defined external symbol. */ 242 unsigned long symbol_index; 243 244 /* Index into the module table to the module for this entry. */ 245 unsigned long module_index; 246 } 247 bfd_mach_o_dylib_table_of_content; 248 249 typedef struct bfd_mach_o_dylib_reference 250 { 251 /* Index into the symbol table for the symbol being referenced. */ 252 unsigned long isym; 253 254 /* Type of the reference being made (use REFERENCE_FLAGS constants). */ 255 unsigned long flags; 256 } 257 bfd_mach_o_dylib_reference; 258 #define BFD_MACH_O_REFERENCE_SIZE 4 259 260 typedef struct bfd_mach_o_dysymtab_command 261 { 262 /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command 263 are grouped into the following three groups: 264 local symbols (further grouped by the module they are from) 265 defined external symbols (further grouped by the module they are from) 266 undefined symbols 267 268 The local symbols are used only for debugging. The dynamic binding 269 process may have to use them to indicate to the debugger the local 270 symbols for a module that is being bound. 271 272 The last two groups are used by the dynamic binding process to do the 273 binding (indirectly through the module table and the reference symbol 274 table when this is a dynamically linked shared library file). */ 275 276 unsigned long ilocalsym; /* Index to local symbols. */ 277 unsigned long nlocalsym; /* Number of local symbols. */ 278 unsigned long iextdefsym; /* Index to externally defined symbols. */ 279 unsigned long nextdefsym; /* Number of externally defined symbols. */ 280 unsigned long iundefsym; /* Index to undefined symbols. */ 281 unsigned long nundefsym; /* Number of undefined symbols. */ 282 283 /* For the for the dynamic binding process to find which module a symbol 284 is defined in the table of contents is used (analogous to the ranlib 285 structure in an archive) which maps defined external symbols to modules 286 they are defined in. This exists only in a dynamically linked shared 287 library file. For executable and object modules the defined external 288 symbols are sorted by name and is use as the table of contents. */ 289 290 unsigned long tocoff; /* File offset to table of contents. */ 291 unsigned long ntoc; /* Number of entries in table of contents. */ 292 293 /* To support dynamic binding of "modules" (whole object files) the symbol 294 table must reflect the modules that the file was created from. This is 295 done by having a module table that has indexes and counts into the merged 296 tables for each module. The module structure that these two entries 297 refer to is described below. This exists only in a dynamically linked 298 shared library file. For executable and object modules the file only 299 contains one module so everything in the file belongs to the module. */ 300 301 unsigned long modtaboff; /* File offset to module table. */ 302 unsigned long nmodtab; /* Number of module table entries. */ 303 304 /* To support dynamic module binding the module structure for each module 305 indicates the external references (defined and undefined) each module 306 makes. For each module there is an offset and a count into the 307 reference symbol table for the symbols that the module references. 308 This exists only in a dynamically linked shared library file. For 309 executable and object modules the defined external symbols and the 310 undefined external symbols indicates the external references. */ 311 312 unsigned long extrefsymoff; /* Offset to referenced symbol table. */ 313 unsigned long nextrefsyms; /* Number of referenced symbol table entries. */ 314 315 /* The sections that contain "symbol pointers" and "routine stubs" have 316 indexes and (implied counts based on the size of the section and fixed 317 size of the entry) into the "indirect symbol" table for each pointer 318 and stub. For every section of these two types the index into the 319 indirect symbol table is stored in the section header in the field 320 reserved1. An indirect symbol table entry is simply a 32bit index into 321 the symbol table to the symbol that the pointer or stub is referring to. 322 The indirect symbol table is ordered to match the entries in the section. */ 323 324 unsigned long indirectsymoff; /* File offset to the indirect symbol table. */ 325 unsigned long nindirectsyms; /* Number of indirect symbol table entries. */ 326 327 /* To support relocating an individual module in a library file quickly the 328 external relocation entries for each module in the library need to be 329 accessed efficiently. Since the relocation entries can't be accessed 330 through the section headers for a library file they are separated into 331 groups of local and external entries further grouped by module. In this 332 case the presents of this load command who's extreloff, nextrel, 333 locreloff and nlocrel fields are non-zero indicates that the relocation 334 entries of non-merged sections are not referenced through the section 335 structures (and the reloff and nreloc fields in the section headers are 336 set to zero). 337 338 Since the relocation entries are not accessed through the section headers 339 this requires the r_address field to be something other than a section 340 offset to identify the item to be relocated. In this case r_address is 341 set to the offset from the vmaddr of the first LC_SEGMENT command. 342 343 The relocation entries are grouped by module and the module table 344 entries have indexes and counts into them for the group of external 345 relocation entries for that the module. 346 347 For sections that are merged across modules there must not be any 348 remaining external relocation entries for them (for merged sections 349 remaining relocation entries must be local). */ 350 351 unsigned long extreloff; /* Offset to external relocation entries. */ 352 unsigned long nextrel; /* Number of external relocation entries. */ 353 354 /* All the local relocation entries are grouped together (they are not 355 grouped by their module since they are only used if the object is moved 356 from it statically link edited address). */ 357 358 unsigned long locreloff; /* Offset to local relocation entries. */ 359 unsigned long nlocrel; /* Number of local relocation entries. */ 360 361 bfd_mach_o_dylib_module *dylib_module; 362 bfd_mach_o_dylib_table_of_content *dylib_toc; 363 unsigned int *indirect_syms; 364 bfd_mach_o_dylib_reference *ext_refs; 365 } 366 bfd_mach_o_dysymtab_command; 367 368 /* An indirect symbol table entry is simply a 32bit index into the symbol table 369 to the symbol that the pointer or stub is refering to. Unless it is for a 370 non-lazy symbol pointer section for a defined symbol which strip(1) has 371 removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the 372 symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */ 373 374 #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000 375 #define BFD_MACH_O_INDIRECT_SYMBOL_ABS 0x40000000 376 #define BFD_MACH_O_INDIRECT_SYMBOL_SIZE 4 377 378 /* For LC_TWOLEVEL_HINTS. */ 379 380 typedef struct bfd_mach_o_twolevel_hints_command 381 { 382 /* Offset to the hint table. */ 383 unsigned int offset; 384 385 /* Number of entries in the table. */ 386 unsigned int nhints; 387 } 388 bfd_mach_o_twolevel_hints_command; 389 390 /* For LC_PREBIND_CKSUM. */ 391 392 typedef struct bfd_mach_o_prebind_cksum_command 393 { 394 /* Checksum or zero. */ 395 unsigned int cksum; 396 } 397 bfd_mach_o_prebind_cksum_command; 398 399 /* For LC_THREAD or LC_UNIXTHREAD. */ 400 401 typedef struct bfd_mach_o_thread_flavour 402 { 403 unsigned long flavour; 404 unsigned long offset; 405 unsigned long size; 406 } 407 bfd_mach_o_thread_flavour; 408 409 typedef struct bfd_mach_o_thread_command 410 { 411 unsigned long nflavours; 412 bfd_mach_o_thread_flavour *flavours; 413 asection *section; 414 } 415 bfd_mach_o_thread_command; 416 417 /* For LC_LOAD_DYLINKER and LC_ID_DYLINKER. */ 418 419 typedef struct bfd_mach_o_dylinker_command 420 { 421 unsigned int name_offset; /* Offset to library's path name. */ 422 char *name_str; 423 } 424 bfd_mach_o_dylinker_command; 425 426 /* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB 427 or LC_REEXPORT_DYLIB. */ 428 429 typedef struct bfd_mach_o_dylib_command 430 { 431 unsigned int name_offset; /* Offset to library's path name. */ 432 unsigned long timestamp; /* Library's build time stamp. */ 433 unsigned long current_version; /* Library's current version number. */ 434 unsigned long compatibility_version; /* Library's compatibility vers number. */ 435 char *name_str; 436 } 437 bfd_mach_o_dylib_command; 438 439 /* For LC_PREBOUND_DYLIB. */ 440 441 typedef struct bfd_mach_o_prebound_dylib_command 442 { 443 unsigned int name_offset; /* Library's path name. */ 444 unsigned int nmodules; /* Number of modules in library. */ 445 unsigned int linked_modules_offset; /* Bit vector of linked modules. */ 446 447 char *name_str; 448 unsigned char *linked_modules; 449 } 450 bfd_mach_o_prebound_dylib_command; 451 452 /* For LC_UUID. */ 453 454 typedef struct bfd_mach_o_uuid_command 455 { 456 unsigned char uuid[16]; 457 } 458 bfd_mach_o_uuid_command; 459 460 /* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO. */ 461 462 typedef struct bfd_mach_o_linkedit_command 463 { 464 unsigned long dataoff; 465 unsigned long datasize; 466 } 467 bfd_mach_o_linkedit_command; 468 469 typedef struct bfd_mach_o_str_command 470 { 471 unsigned long stroff; 472 unsigned long str_len; 473 char *str; 474 } 475 bfd_mach_o_str_command; 476 477 typedef struct bfd_mach_o_fvmlib_command 478 { 479 unsigned int name_offset; 480 char *name_str; 481 unsigned int minor_version; 482 unsigned int header_addr; 483 } 484 bfd_mach_o_fvmlib_command; 485 486 typedef struct bfd_mach_o_dyld_info_command 487 { 488 /* File offset and size to rebase info. */ 489 unsigned int rebase_off; 490 unsigned int rebase_size; 491 unsigned char *rebase_content; 492 493 /* File offset and size of binding info. */ 494 unsigned int bind_off; 495 unsigned int bind_size; 496 unsigned char *bind_content; 497 498 /* File offset and size of weak binding info. */ 499 unsigned int weak_bind_off; 500 unsigned int weak_bind_size; 501 unsigned char *weak_bind_content; 502 503 /* File offset and size of lazy binding info. */ 504 unsigned int lazy_bind_off; 505 unsigned int lazy_bind_size; 506 unsigned char *lazy_bind_content; 507 508 /* File offset and size of export info. */ 509 unsigned int export_off; 510 unsigned int export_size; 511 unsigned char *export_content; 512 } 513 bfd_mach_o_dyld_info_command; 514 515 typedef struct bfd_mach_o_version_min_command 516 { 517 unsigned char rel; 518 unsigned char maj; 519 unsigned char min; 520 unsigned int reserved; 521 } 522 bfd_mach_o_version_min_command; 523 524 typedef struct bfd_mach_o_encryption_info_command 525 { 526 unsigned int cryptoff; 527 unsigned int cryptsize; 528 unsigned int cryptid; 529 } 530 bfd_mach_o_encryption_info_command; 531 532 typedef struct bfd_mach_o_main_command 533 { 534 bfd_uint64_t entryoff; 535 bfd_uint64_t stacksize; 536 } 537 bfd_mach_o_main_command; 538 539 typedef struct bfd_mach_o_source_version_command 540 { 541 unsigned int a; 542 unsigned short b; 543 unsigned short c; 544 unsigned short d; 545 unsigned short e; 546 } 547 bfd_mach_o_source_version_command; 548 549 typedef struct bfd_mach_o_load_command 550 { 551 /* Next command in the single linked list. */ 552 struct bfd_mach_o_load_command *next; 553 554 /* Type and required flag. */ 555 bfd_mach_o_load_command_type type; 556 bfd_boolean type_required; 557 558 /* Offset and length in the file. */ 559 unsigned int offset; 560 unsigned int len; 561 562 union 563 { 564 bfd_mach_o_segment_command segment; 565 bfd_mach_o_symtab_command symtab; 566 bfd_mach_o_dysymtab_command dysymtab; 567 bfd_mach_o_thread_command thread; 568 bfd_mach_o_dylib_command dylib; 569 bfd_mach_o_dylinker_command dylinker; 570 bfd_mach_o_prebound_dylib_command prebound_dylib; 571 bfd_mach_o_prebind_cksum_command prebind_cksum; 572 bfd_mach_o_twolevel_hints_command twolevel_hints; 573 bfd_mach_o_uuid_command uuid; 574 bfd_mach_o_linkedit_command linkedit; 575 bfd_mach_o_str_command str; 576 bfd_mach_o_dyld_info_command dyld_info; 577 bfd_mach_o_version_min_command version_min; 578 bfd_mach_o_encryption_info_command encryption_info; 579 bfd_mach_o_fvmlib_command fvmlib; 580 bfd_mach_o_main_command main; 581 bfd_mach_o_source_version_command source_version; 582 } command; 583 } 584 bfd_mach_o_load_command; 585 586 typedef struct mach_o_data_struct 587 { 588 /* Mach-O header. */ 589 bfd_mach_o_header header; 590 /* Array of load commands (length is given by header.ncmds). */ 591 bfd_mach_o_load_command *first_command; 592 bfd_mach_o_load_command *last_command; 593 594 /* Flatten array of sections. The array is 0-based. */ 595 unsigned long nsects; 596 bfd_mach_o_section **sections; 597 598 /* Used while writing: current length of the output file. This is used 599 to allocate space in the file. */ 600 ufile_ptr filelen; 601 602 /* As symtab is referenced by other load command, it is handy to have 603 a direct access to it. Although it is not clearly stated, only one symtab 604 is expected. */ 605 bfd_mach_o_symtab_command *symtab; 606 bfd_mach_o_dysymtab_command *dysymtab; 607 608 /* A place to stash dwarf2 info for this bfd. */ 609 void *dwarf2_find_line_info; 610 611 /* BFD of .dSYM file. */ 612 bfd *dsym_bfd; 613 614 /* Cache of dynamic relocs. */ 615 arelent *dyn_reloc_cache; 616 } 617 bfd_mach_o_data_struct; 618 619 typedef struct bfd_mach_o_xlat_name 620 { 621 const char *name; 622 unsigned long val; 623 } 624 bfd_mach_o_xlat_name; 625 626 /* Target specific routines. */ 627 628 #define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data) 629 #define bfd_mach_o_get_backend_data(abfd) \ 630 ((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data) 631 632 /* Get the Mach-O header for section SEC. */ 633 #define bfd_mach_o_get_mach_o_section(sec) \ 634 ((bfd_mach_o_section *)(sec)->used_by_bfd) 635 636 bfd_boolean bfd_mach_o_valid (bfd *); 637 bfd_boolean bfd_mach_o_mkobject_init (bfd *); 638 const bfd_target *bfd_mach_o_object_p (bfd *); 639 const bfd_target *bfd_mach_o_core_p (bfd *); 640 const bfd_target *bfd_mach_o_archive_p (bfd *); 641 bfd *bfd_mach_o_openr_next_archived_file (bfd *, bfd *); 642 bfd_boolean bfd_mach_o_set_arch_mach (bfd *, enum bfd_architecture, 643 unsigned long); 644 int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **); 645 bfd_boolean bfd_mach_o_new_section_hook (bfd *, asection *); 646 bfd_boolean bfd_mach_o_write_contents (bfd *); 647 bfd_boolean bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *, 648 bfd *, asymbol *); 649 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *, 650 bfd *, asection *); 651 bfd_boolean bfd_mach_o_bfd_copy_private_header_data (bfd *, bfd *); 652 bfd_boolean bfd_mach_o_bfd_set_private_flags (bfd *, flagword); 653 long bfd_mach_o_get_symtab_upper_bound (bfd *); 654 long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **); 655 long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long, 656 asymbol **, asymbol **ret); 657 long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *); 658 long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **); 659 long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *); 660 long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); 661 asymbol *bfd_mach_o_make_empty_symbol (bfd *); 662 void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *); 663 void bfd_mach_o_print_symbol (bfd *, void *, asymbol *, bfd_print_symbol_type); 664 int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *); 665 unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type); 666 int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *); 667 char *bfd_mach_o_core_file_failing_command (bfd *); 668 int bfd_mach_o_core_file_failing_signal (bfd *); 669 bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *); 670 bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *); 671 const bfd_target *bfd_mach_o_header_p (bfd *, bfd_mach_o_filetype, 672 bfd_mach_o_cpu_type); 673 bfd_boolean bfd_mach_o_build_commands (bfd *); 674 bfd_boolean bfd_mach_o_set_section_contents (bfd *, asection *, const void *, 675 file_ptr, bfd_size_type); 676 unsigned int bfd_mach_o_version (bfd *); 677 678 unsigned int bfd_mach_o_get_section_type_from_name (bfd *, const char *); 679 unsigned int bfd_mach_o_get_section_attribute_from_name (const char *); 680 681 void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *, 682 const char **, flagword *); 683 bfd_boolean bfd_mach_o_find_nearest_line (bfd *, asymbol **, 684 asection *, bfd_vma, 685 const char **, const char **, 686 unsigned int *, unsigned int *); 687 #define bfd_mach_o_find_line _bfd_nosymbols_find_line 688 bfd_boolean bfd_mach_o_close_and_cleanup (bfd *); 689 bfd_boolean bfd_mach_o_free_cached_info (bfd *); 690 691 unsigned int bfd_mach_o_section_get_nbr_indirect (bfd *, bfd_mach_o_section *); 692 unsigned int bfd_mach_o_section_get_entry_size (bfd *, bfd_mach_o_section *); 693 bfd_boolean bfd_mach_o_read_symtab_symbols (bfd *); 694 bfd_boolean bfd_mach_o_read_symtab_strtab (bfd *abfd); 695 696 bfd_vma bfd_mach_o_get_base_address (bfd *); 697 698 /* A placeholder in case we need to suppress emitting the dysymtab for some 699 reason (e.g. compatibility with older system versions). */ 700 #define bfd_mach_o_should_emit_dysymtab(x) TRUE 701 702 extern const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[]; 703 extern const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[]; 704 705 extern const bfd_target mach_o_fat_vec; 706 707 /* Interfaces between BFD names and Mach-O names. */ 708 709 typedef struct mach_o_section_name_xlat 710 { 711 const char *bfd_name; 712 const char *mach_o_name; 713 flagword bfd_flags; 714 unsigned int macho_sectype; 715 unsigned int macho_secattr; 716 unsigned int sectalign; 717 } mach_o_section_name_xlat; 718 719 typedef struct mach_o_segment_name_xlat 720 { 721 const char *segname; 722 const mach_o_section_name_xlat *sections; 723 } mach_o_segment_name_xlat; 724 725 const mach_o_section_name_xlat * 726 bfd_mach_o_section_data_for_mach_sect (bfd *, const char *, const char *); 727 const mach_o_section_name_xlat * 728 bfd_mach_o_section_data_for_bfd_name (bfd *, const char *, const char **); 729 730 typedef struct bfd_mach_o_backend_data 731 { 732 enum bfd_architecture arch; 733 bfd_vma page_size; 734 bfd_boolean (*_bfd_mach_o_swap_reloc_in)(arelent *, bfd_mach_o_reloc_info *); 735 bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *); 736 bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *, 737 void *, char *); 738 const mach_o_segment_name_xlat *segsec_names_xlat; 739 bfd_boolean (*bfd_mach_o_section_type_valid_for_target) (unsigned long); 740 } 741 bfd_mach_o_backend_data; 742 743 /* Values used in symbol.udata.i, to signal that the mach-o-specific data in the 744 symbol are not yet set, or need validation (where this is possible). */ 745 746 #define SYM_MACHO_FIELDS_UNSET ((bfd_vma) -1) 747 #define SYM_MACHO_FIELDS_NOT_VALIDATED ((bfd_vma) -2) 748 749 #endif /* _BFD_MACH_O_H_ */ 750