1 /* Mach-O support for BFD. 2 Copyright (C) 1999-2016 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 #include "mach-o/external.h" 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 typedef struct bfd_mach_o_header 33 { 34 unsigned long magic; 35 unsigned long cputype; 36 unsigned long cpusubtype; 37 unsigned long filetype; 38 unsigned long ncmds; 39 unsigned long sizeofcmds; 40 unsigned long flags; 41 unsigned int reserved; 42 /* Version 1: 32 bits, version 2: 64 bits. */ 43 unsigned int version; 44 enum bfd_endian byteorder; 45 } 46 bfd_mach_o_header; 47 48 typedef struct bfd_mach_o_asymbol 49 { 50 /* The actual symbol which the rest of BFD works with. */ 51 asymbol symbol; 52 53 /* Mach-O symbol fields. */ 54 unsigned char n_type; 55 unsigned char n_sect; 56 unsigned short n_desc; 57 } 58 bfd_mach_o_asymbol; 59 60 #define BFD_MACH_O_SEGNAME_SIZE 16 61 #define BFD_MACH_O_SECTNAME_SIZE 16 62 63 typedef struct bfd_mach_o_section 64 { 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]; 68 bfd_vma addr; 69 bfd_vma size; 70 bfd_vma offset; 71 unsigned long align; 72 bfd_vma reloff; 73 unsigned long nreloc; 74 unsigned long flags; 75 unsigned long reserved1; 76 unsigned long reserved2; 77 unsigned long reserved3; 78 79 /* Corresponding bfd section. */ 80 asection *bfdsection; 81 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. */ 85 86 bfd_mach_o_asymbol **indirect_syms; 87 88 /* Simply linked list. */ 89 struct bfd_mach_o_section *next; 90 } 91 bfd_mach_o_section; 92 93 typedef struct bfd_mach_o_segment_command 94 { 95 char segname[BFD_MACH_O_SEGNAME_SIZE + 1]; 96 bfd_vma vmaddr; 97 bfd_vma vmsize; 98 bfd_vma fileoff; 99 unsigned long filesize; 100 unsigned long maxprot; /* Maximum permitted protection. */ 101 unsigned long initprot; /* Initial protection. */ 102 unsigned long nsects; 103 unsigned long flags; 104 105 /* Linked list of sections. */ 106 bfd_mach_o_section *sect_head; 107 bfd_mach_o_section *sect_tail; 108 } 109 bfd_mach_o_segment_command; 110 111 /* 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 115 116 /* Expanded internal representation of a relocation entry. */ 117 typedef struct bfd_mach_o_reloc_info 118 { 119 bfd_vma r_address; 120 bfd_vma r_value; 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; 126 } 127 bfd_mach_o_reloc_info; 128 129 /* The symbol table is sorted like this: 130 (1) local. 131 (otherwise in order of generation) 132 (2) external defined 133 (sorted by name) 134 (3) external undefined / common 135 (sorted by name) 136 */ 137 138 typedef struct bfd_mach_o_symtab_command 139 { 140 unsigned int symoff; 141 unsigned int nsyms; 142 unsigned int stroff; 143 unsigned int strsize; 144 bfd_mach_o_asymbol *symbols; 145 char *strtab; 146 } 147 bfd_mach_o_symtab_command; 148 149 /* This is the second set of the symbolic information which is used to support 150 the data structures for the dynamically link editor. 151 152 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 160 of symbols. 161 162 This load command contains a the offsets and sizes of the following new 163 symbolic information tables: 164 table of contents 165 module table 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 177 178 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. */ 185 186 typedef struct bfd_mach_o_dylib_module 187 { 188 /* Index into the string table indicating the name of the module. */ 189 unsigned long module_name_idx; 190 char *module_name; 191 192 /* Index into the symbol table of the first defined external symbol provided 193 by the module. */ 194 unsigned long iextdefsym; 195 196 /* Number of external symbols provided by this module. */ 197 unsigned long nextdefsym; 198 199 /* Index into the external reference table of the first entry 200 provided by this module. */ 201 unsigned long irefsym; 202 203 /* Number of external reference entries provided by this module. */ 204 unsigned long nrefsym; 205 206 /* Index into the symbol table of the first local symbol provided by this 207 module. */ 208 unsigned long ilocalsym; 209 210 /* Number of local symbols provided by this module. */ 211 unsigned long nlocalsym; 212 213 /* Index into the external relocation table of the first entry provided 214 by this module. */ 215 unsigned long iextrel; 216 217 /* Number of external relocation entries provided by this module. */ 218 unsigned long nextrel; 219 220 /* Index in the module initialization section to the pointers for this 221 module. */ 222 unsigned short iinit; 223 224 /* Index in the module termination section to the pointers for this 225 module. */ 226 unsigned short iterm; 227 228 /* Number of pointers in the module initialization for this module. */ 229 unsigned short ninit; 230 231 /* Number of pointers in the module termination for this module. */ 232 unsigned short nterm; 233 234 /* 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; 237 238 /* 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; 241 } 242 bfd_mach_o_dylib_module; 243 244 typedef struct bfd_mach_o_dylib_table_of_content 245 { 246 /* Index into the symbol table to the defined external symbol. */ 247 unsigned long symbol_index; 248 249 /* Index into the module table to the module for this entry. */ 250 unsigned long module_index; 251 } 252 bfd_mach_o_dylib_table_of_content; 253 254 typedef struct bfd_mach_o_dylib_reference 255 { 256 /* Index into the symbol table for the symbol being referenced. */ 257 unsigned long isym; 258 259 /* Type of the reference being made (use REFERENCE_FLAGS constants). */ 260 unsigned long flags; 261 } 262 bfd_mach_o_dylib_reference; 263 #define BFD_MACH_O_REFERENCE_SIZE 4 264 265 typedef struct bfd_mach_o_dysymtab_command 266 { 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) 271 undefined symbols 272 273 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. 276 277 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). */ 280 281 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. */ 287 288 /* 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. */ 294 295 unsigned long tocoff; /* File offset to table of contents. */ 296 unsigned long ntoc; /* Number of entries in table of contents. */ 297 298 /* 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. */ 305 306 unsigned long modtaboff; /* File offset to module table. */ 307 unsigned long nmodtab; /* Number of module table entries. */ 308 309 /* 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. */ 316 317 unsigned long extrefsymoff; /* Offset to referenced symbol table. */ 318 unsigned long nextrefsyms; /* Number of referenced symbol table entries. */ 319 320 /* 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. */ 328 329 unsigned long indirectsymoff; /* File offset to the indirect symbol table. */ 330 unsigned long nindirectsyms; /* Number of indirect symbol table entries. */ 331 332 /* 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 341 set to zero). 342 343 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. 347 348 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. 351 352 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). */ 355 356 unsigned long extreloff; /* Offset to external relocation entries. */ 357 unsigned long nextrel; /* Number of external relocation entries. */ 358 359 /* 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). */ 362 363 unsigned long locreloff; /* Offset to local relocation entries. */ 364 unsigned long nlocrel; /* Number of local relocation entries. */ 365 366 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; 370 } 371 bfd_mach_o_dysymtab_command; 372 373 /* 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. */ 378 379 #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 4 382 383 /* For LC_TWOLEVEL_HINTS. */ 384 385 typedef struct bfd_mach_o_twolevel_hints_command 386 { 387 /* Offset to the hint table. */ 388 unsigned int offset; 389 390 /* Number of entries in the table. */ 391 unsigned int nhints; 392 } 393 bfd_mach_o_twolevel_hints_command; 394 395 /* For LC_PREBIND_CKSUM. */ 396 397 typedef struct bfd_mach_o_prebind_cksum_command 398 { 399 /* Checksum or zero. */ 400 unsigned int cksum; 401 } 402 bfd_mach_o_prebind_cksum_command; 403 404 /* For LC_THREAD or LC_UNIXTHREAD. */ 405 406 typedef struct bfd_mach_o_thread_flavour 407 { 408 unsigned long flavour; 409 unsigned long offset; 410 unsigned long size; 411 } 412 bfd_mach_o_thread_flavour; 413 414 typedef struct bfd_mach_o_thread_command 415 { 416 unsigned long nflavours; 417 bfd_mach_o_thread_flavour *flavours; 418 asection *section; 419 } 420 bfd_mach_o_thread_command; 421 422 /* For LC_LOAD_DYLINKER and LC_ID_DYLINKER. */ 423 424 typedef struct bfd_mach_o_dylinker_command 425 { 426 unsigned int name_offset; /* Offset to library's path name. */ 427 char *name_str; 428 } 429 bfd_mach_o_dylinker_command; 430 431 /* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB 432 or LC_REEXPORT_DYLIB. */ 433 434 typedef struct bfd_mach_o_dylib_command 435 { 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. */ 440 char *name_str; 441 } 442 bfd_mach_o_dylib_command; 443 444 /* For LC_PREBOUND_DYLIB. */ 445 446 typedef struct bfd_mach_o_prebound_dylib_command 447 { 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. */ 451 452 char *name_str; 453 unsigned char *linked_modules; 454 } 455 bfd_mach_o_prebound_dylib_command; 456 457 /* For LC_UUID. */ 458 459 typedef struct bfd_mach_o_uuid_command 460 { 461 unsigned char uuid[16]; 462 } 463 bfd_mach_o_uuid_command; 464 465 /* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO. */ 466 467 typedef struct bfd_mach_o_linkedit_command 468 { 469 unsigned long dataoff; 470 unsigned long datasize; 471 } 472 bfd_mach_o_linkedit_command; 473 474 typedef struct bfd_mach_o_str_command 475 { 476 unsigned long stroff; 477 unsigned long str_len; 478 char *str; 479 } 480 bfd_mach_o_str_command; 481 482 typedef struct bfd_mach_o_fvmlib_command 483 { 484 unsigned int name_offset; 485 char *name_str; 486 unsigned int minor_version; 487 unsigned int header_addr; 488 } 489 bfd_mach_o_fvmlib_command; 490 491 typedef struct bfd_mach_o_dyld_info_command 492 { 493 /* File offset and size to rebase info. */ 494 unsigned int rebase_off; 495 unsigned int rebase_size; 496 unsigned char *rebase_content; 497 498 /* File offset and size of binding info. */ 499 unsigned int bind_off; 500 unsigned int bind_size; 501 unsigned char *bind_content; 502 503 /* 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; 507 508 /* 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; 512 513 /* File offset and size of export info. */ 514 unsigned int export_off; 515 unsigned int export_size; 516 unsigned char *export_content; 517 } 518 bfd_mach_o_dyld_info_command; 519 520 typedef struct bfd_mach_o_version_min_command 521 { 522 unsigned char rel; 523 unsigned char maj; 524 unsigned char min; 525 unsigned int reserved; 526 } 527 bfd_mach_o_version_min_command; 528 529 typedef struct bfd_mach_o_encryption_info_command 530 { 531 unsigned int cryptoff; 532 unsigned int cryptsize; 533 unsigned int cryptid; 534 } 535 bfd_mach_o_encryption_info_command; 536 537 typedef struct bfd_mach_o_main_command 538 { 539 bfd_uint64_t entryoff; 540 bfd_uint64_t stacksize; 541 } 542 bfd_mach_o_main_command; 543 544 typedef struct bfd_mach_o_source_version_command 545 { 546 unsigned int a; 547 unsigned short b; 548 unsigned short c; 549 unsigned short d; 550 unsigned short e; 551 } 552 bfd_mach_o_source_version_command; 553 554 typedef struct bfd_mach_o_load_command 555 { 556 /* Next command in the single linked list. */ 557 struct bfd_mach_o_load_command *next; 558 559 /* Type and required flag. */ 560 bfd_mach_o_load_command_type type; 561 bfd_boolean type_required; 562 563 /* Offset and length in the file. */ 564 unsigned int offset; 565 unsigned int len; 566 567 union 568 { 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; 587 } command; 588 } 589 bfd_mach_o_load_command; 590 591 typedef struct mach_o_data_struct 592 { 593 /* Mach-O header. */ 594 bfd_mach_o_header header; 595 596 /* File offset of the header. Usually this is 0. */ 597 file_ptr hdr_offset; 598 599 /* 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; 602 603 /* Flatten array of sections. The array is 0-based. */ 604 unsigned long nsects; 605 bfd_mach_o_section **sections; 606 607 /* Used while writing: current length of the output file. This is used 608 to allocate space in the file. */ 609 ufile_ptr filelen; 610 611 /* 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 613 is expected. */ 614 bfd_mach_o_symtab_command *symtab; 615 bfd_mach_o_dysymtab_command *dysymtab; 616 617 /* A place to stash dwarf2 info for this bfd. */ 618 void *dwarf2_find_line_info; 619 620 /* BFD of .dSYM file. */ 621 bfd *dsym_bfd; 622 623 /* Cache of dynamic relocs. */ 624 arelent *dyn_reloc_cache; 625 } 626 bfd_mach_o_data_struct; 627 628 typedef struct bfd_mach_o_xlat_name 629 { 630 const char *name; 631 unsigned long val; 632 } 633 bfd_mach_o_xlat_name; 634 635 /* Target specific routines. */ 636 637 #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) 640 641 /* 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) 644 645 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, 652 unsigned long); 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 *, 657 bfd *, asymbol *); 658 bfd_boolean bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *, 659 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 *); 686 687 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 *); 689 690 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 **, 693 asection *, bfd_vma, 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 *); 699 700 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); 704 705 bfd_vma bfd_mach_o_get_base_address (bfd *); 706 707 void bfd_mach_o_swap_in_non_scattered_reloc (bfd *, bfd_mach_o_reloc_info *, 708 unsigned char *); 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 **); 711 712 /* 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 715 716 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[]; 718 719 extern const bfd_target mach_o_fat_vec; 720 721 /* Interfaces between BFD names and Mach-O names. */ 722 723 typedef struct mach_o_section_name_xlat 724 { 725 const char *bfd_name; 726 const char *mach_o_name; 727 flagword bfd_flags; 728 unsigned int macho_sectype; 729 unsigned int macho_secattr; 730 unsigned int sectalign; 731 } mach_o_section_name_xlat; 732 733 typedef struct mach_o_segment_name_xlat 734 { 735 const char *segname; 736 const mach_o_section_name_xlat *sections; 737 } mach_o_segment_name_xlat; 738 739 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 **); 743 744 typedef struct bfd_mach_o_backend_data 745 { 746 enum bfd_architecture arch; 747 bfd_vma page_size; 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 *, 752 void *, char *); 753 const mach_o_segment_name_xlat *segsec_names_xlat; 754 bfd_boolean (*bfd_mach_o_section_type_valid_for_target) (unsigned long); 755 } 756 bfd_mach_o_backend_data; 757 758 /* 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). */ 760 761 #define SYM_MACHO_FIELDS_UNSET ((bfd_vma) -1) 762 #define SYM_MACHO_FIELDS_NOT_VALIDATED ((bfd_vma) -2) 763 764 #ifdef __cplusplus 765 } 766 #endif 767 768 #endif /* _BFD_MACH_O_H_ */ 769
