1/* Mach-O support for BFD. 2 Copyright (C) 1999-2022 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 "mach-o/loader.h" 25#include "mach-o/external.h" 26 27#ifdef __cplusplus 28extern "C" { 29#endif 30 31typedef struct bfd_mach_o_header 32{ 33 unsigned long magic; 34 unsigned long cputype; 35 unsigned long cpusubtype; 36 unsigned long filetype; 37 unsigned long ncmds; 38 unsigned long sizeofcmds; 39 unsigned long flags; 40 unsigned int reserved; 41 /* Version 1: 32 bits, version 2: 64 bits. */ 42 unsigned int version; 43 enum bfd_endian byteorder; 44} 45bfd_mach_o_header; 46 47typedef struct bfd_mach_o_asymbol 48{ 49 /* The actual symbol which the rest of BFD works with. */ 50 asymbol symbol; 51 52 /* Mach-O symbol fields. */ 53 unsigned char n_type; 54 unsigned char n_sect; 55 unsigned short n_desc; 56} 57bfd_mach_o_asymbol; 58 59#define BFD_MACH_O_SEGNAME_SIZE 16 60#define BFD_MACH_O_SECTNAME_SIZE 16 61 62typedef struct bfd_mach_o_section 63{ 64 /* Fields present in the file. */ 65 char sectname[BFD_MACH_O_SECTNAME_SIZE + 1]; /* Always NUL padded. */ 66 char segname[BFD_MACH_O_SEGNAME_SIZE + 1]; 67 bfd_vma addr; 68 bfd_vma size; 69 bfd_vma offset; 70 unsigned long align; 71 bfd_vma reloff; 72 unsigned long nreloc; 73 unsigned long flags; 74 unsigned long reserved1; 75 unsigned long reserved2; 76 unsigned long reserved3; 77 78 /* Corresponding bfd section. */ 79 asection *bfdsection; 80 81 /* An array holding the indirect symbols for this section. 82 NULL values indicate local symbols. 83 The number of symbols is determined from the section size and type. */ 84 85 bfd_mach_o_asymbol **indirect_syms; 86 87 /* Simply linked list. */ 88 struct bfd_mach_o_section *next; 89} 90bfd_mach_o_section; 91 92typedef struct bfd_mach_o_segment_command 93{ 94 char segname[BFD_MACH_O_SEGNAME_SIZE + 1]; 95 bfd_vma vmaddr; 96 bfd_vma vmsize; 97 bfd_vma fileoff; 98 unsigned long filesize; 99 unsigned long maxprot; /* Maximum permitted protection. */ 100 unsigned long initprot; /* Initial protection. */ 101 unsigned long nsects; 102 unsigned long flags; 103 104 /* Linked list of sections. */ 105 bfd_mach_o_section *sect_head; 106 bfd_mach_o_section *sect_tail; 107} 108bfd_mach_o_segment_command; 109 110/* Protection flags. */ 111#define BFD_MACH_O_PROT_READ 0x01 112#define BFD_MACH_O_PROT_WRITE 0x02 113#define BFD_MACH_O_PROT_EXECUTE 0x04 114 115/* Target platforms. */ 116#define BFD_MACH_O_PLATFORM_MACOS 1 117#define BFD_MACH_O_PLATFORM_IOS 2 118#define BFD_MACH_O_PLATFORM_TVOS 3 119#define BFD_MACH_O_PLATFORM_WATCHOS 4 120#define BFD_MACH_O_PLATFORM_BRIDGEOS 5 121 122/* Build tools. */ 123#define BFD_MACH_O_TOOL_CLANG 1 124#define BFD_MACH_O_TOOL_SWIFT 2 125#define BFD_MACH_O_TOOL_LD 3 126 127/* Expanded internal representation of a relocation entry. */ 128typedef struct bfd_mach_o_reloc_info 129{ 130 bfd_vma r_address; 131 bfd_vma r_value; 132 unsigned int r_scattered : 1; 133 unsigned int r_type : 4; 134 unsigned int r_pcrel : 1; 135 unsigned int r_length : 2; 136 unsigned int r_extern : 1; 137} 138bfd_mach_o_reloc_info; 139 140/* The symbol table is sorted like this: 141 (1) local. 142 (otherwise in order of generation) 143 (2) external defined 144 (sorted by name) 145 (3) external undefined / common 146 (sorted by name) 147*/ 148 149typedef struct bfd_mach_o_symtab_command 150{ 151 unsigned int symoff; 152 unsigned int nsyms; 153 unsigned int stroff; 154 unsigned int strsize; 155 bfd_mach_o_asymbol *symbols; 156 char *strtab; 157} 158bfd_mach_o_symtab_command; 159 160/* This is the second set of the symbolic information which is used to support 161 the data structures for the dynamically link editor. 162 163 The original set of symbolic information in the symtab_command which contains 164 the symbol and string tables must also be present when this load command is 165 present. When this load command is present the symbol table is organized 166 into three groups of symbols: 167 local symbols (static and debugging symbols) - grouped by module 168 defined external symbols - grouped by module (sorted by name if not lib) 169 undefined external symbols (sorted by name) 170 In this load command there are offsets and counts to each of the three groups 171 of symbols. 172 173 This load command contains a the offsets and sizes of the following new 174 symbolic information tables: 175 table of contents 176 module table 177 reference symbol table 178 indirect symbol table 179 The first three tables above (the table of contents, module table and 180 reference symbol table) are only present if the file is a dynamically linked 181 shared library. For executable and object modules, which are files 182 containing only one module, the information that would be in these three 183 tables is determined as follows: 184 table of contents - the defined external symbols are sorted by name 185 module table - the file contains only one module so everything in the 186 file is part of the module. 187 reference symbol table - is the defined and undefined external symbols 188 189 For dynamically linked shared library files this load command also contains 190 offsets and sizes to the pool of relocation entries for all sections 191 separated into two groups: 192 external relocation entries 193 local relocation entries 194 For executable and object modules the relocation entries continue to hang 195 off the section structures. */ 196 197typedef struct bfd_mach_o_dylib_module 198{ 199 /* Index into the string table indicating the name of the module. */ 200 unsigned long module_name_idx; 201 char *module_name; 202 203 /* Index into the symbol table of the first defined external symbol provided 204 by the module. */ 205 unsigned long iextdefsym; 206 207 /* Number of external symbols provided by this module. */ 208 unsigned long nextdefsym; 209 210 /* Index into the external reference table of the first entry 211 provided by this module. */ 212 unsigned long irefsym; 213 214 /* Number of external reference entries provided by this module. */ 215 unsigned long nrefsym; 216 217 /* Index into the symbol table of the first local symbol provided by this 218 module. */ 219 unsigned long ilocalsym; 220 221 /* Number of local symbols provided by this module. */ 222 unsigned long nlocalsym; 223 224 /* Index into the external relocation table of the first entry provided 225 by this module. */ 226 unsigned long iextrel; 227 228 /* Number of external relocation entries provided by this module. */ 229 unsigned long nextrel; 230 231 /* Index in the module initialization section to the pointers for this 232 module. */ 233 unsigned short iinit; 234 235 /* Index in the module termination section to the pointers for this 236 module. */ 237 unsigned short iterm; 238 239 /* Number of pointers in the module initialization for this module. */ 240 unsigned short ninit; 241 242 /* Number of pointers in the module termination for this module. */ 243 unsigned short nterm; 244 245 /* Number of data byte for this module that are used in the __module_info 246 section of the __OBJC segment. */ 247 unsigned long objc_module_info_size; 248 249 /* Statically linked address of the start of the data for this module 250 in the __module_info section of the __OBJC_segment. */ 251 bfd_vma objc_module_info_addr; 252} 253bfd_mach_o_dylib_module; 254 255typedef struct bfd_mach_o_dylib_table_of_content 256{ 257 /* Index into the symbol table to the defined external symbol. */ 258 unsigned long symbol_index; 259 260 /* Index into the module table to the module for this entry. */ 261 unsigned long module_index; 262} 263bfd_mach_o_dylib_table_of_content; 264 265typedef struct bfd_mach_o_dylib_reference 266{ 267 /* Index into the symbol table for the symbol being referenced. */ 268 unsigned long isym; 269 270 /* Type of the reference being made (use REFERENCE_FLAGS constants). */ 271 unsigned long flags; 272} 273bfd_mach_o_dylib_reference; 274#define BFD_MACH_O_REFERENCE_SIZE 4 275 276typedef struct bfd_mach_o_dysymtab_command 277{ 278 /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command 279 are grouped into the following three groups: 280 local symbols (further grouped by the module they are from) 281 defined external symbols (further grouped by the module they are from) 282 undefined symbols 283 284 The local symbols are used only for debugging. The dynamic binding 285 process may have to use them to indicate to the debugger the local 286 symbols for a module that is being bound. 287 288 The last two groups are used by the dynamic binding process to do the 289 binding (indirectly through the module table and the reference symbol 290 table when this is a dynamically linked shared library file). */ 291 292 unsigned long ilocalsym; /* Index to local symbols. */ 293 unsigned long nlocalsym; /* Number of local symbols. */ 294 unsigned long iextdefsym; /* Index to externally defined symbols. */ 295 unsigned long nextdefsym; /* Number of externally defined symbols. */ 296 unsigned long iundefsym; /* Index to undefined symbols. */ 297 unsigned long nundefsym; /* Number of undefined symbols. */ 298 299 /* For the for the dynamic binding process to find which module a symbol 300 is defined in the table of contents is used (analogous to the ranlib 301 structure in an archive) which maps defined external symbols to modules 302 they are defined in. This exists only in a dynamically linked shared 303 library file. For executable and object modules the defined external 304 symbols are sorted by name and is use as the table of contents. */ 305 306 unsigned long tocoff; /* File offset to table of contents. */ 307 unsigned long ntoc; /* Number of entries in table of contents. */ 308 309 /* To support dynamic binding of "modules" (whole object files) the symbol 310 table must reflect the modules that the file was created from. This is 311 done by having a module table that has indexes and counts into the merged 312 tables for each module. The module structure that these two entries 313 refer to is described below. This exists only in a dynamically linked 314 shared library file. For executable and object modules the file only 315 contains one module so everything in the file belongs to the module. */ 316 317 unsigned long modtaboff; /* File offset to module table. */ 318 unsigned long nmodtab; /* Number of module table entries. */ 319 320 /* To support dynamic module binding the module structure for each module 321 indicates the external references (defined and undefined) each module 322 makes. For each module there is an offset and a count into the 323 reference symbol table for the symbols that the module references. 324 This exists only in a dynamically linked shared library file. For 325 executable and object modules the defined external symbols and the 326 undefined external symbols indicates the external references. */ 327 328 unsigned long extrefsymoff; /* Offset to referenced symbol table. */ 329 unsigned long nextrefsyms; /* Number of referenced symbol table entries. */ 330 331 /* The sections that contain "symbol pointers" and "routine stubs" have 332 indexes and (implied counts based on the size of the section and fixed 333 size of the entry) into the "indirect symbol" table for each pointer 334 and stub. For every section of these two types the index into the 335 indirect symbol table is stored in the section header in the field 336 reserved1. An indirect symbol table entry is simply a 32bit index into 337 the symbol table to the symbol that the pointer or stub is referring to. 338 The indirect symbol table is ordered to match the entries in the section. */ 339 340 unsigned long indirectsymoff; /* File offset to the indirect symbol table. */ 341 unsigned long nindirectsyms; /* Number of indirect symbol table entries. */ 342 343 /* To support relocating an individual module in a library file quickly the 344 external relocation entries for each module in the library need to be 345 accessed efficiently. Since the relocation entries can't be accessed 346 through the section headers for a library file they are separated into 347 groups of local and external entries further grouped by module. In this 348 case the presents of this load command who's extreloff, nextrel, 349 locreloff and nlocrel fields are non-zero indicates that the relocation 350 entries of non-merged sections are not referenced through the section 351 structures (and the reloff and nreloc fields in the section headers are 352 set to zero). 353 354 Since the relocation entries are not accessed through the section headers 355 this requires the r_address field to be something other than a section 356 offset to identify the item to be relocated. In this case r_address is 357 set to the offset from the vmaddr of the first LC_SEGMENT command. 358 359 The relocation entries are grouped by module and the module table 360 entries have indexes and counts into them for the group of external 361 relocation entries for that the module. 362 363 For sections that are merged across modules there must not be any 364 remaining external relocation entries for them (for merged sections 365 remaining relocation entries must be local). */ 366 367 unsigned long extreloff; /* Offset to external relocation entries. */ 368 unsigned long nextrel; /* Number of external relocation entries. */ 369 370 /* All the local relocation entries are grouped together (they are not 371 grouped by their module since they are only used if the object is moved 372 from it statically link edited address). */ 373 374 unsigned long locreloff; /* Offset to local relocation entries. */ 375 unsigned long nlocrel; /* Number of local relocation entries. */ 376 377 bfd_mach_o_dylib_module *dylib_module; 378 bfd_mach_o_dylib_table_of_content *dylib_toc; 379 unsigned int *indirect_syms; 380 bfd_mach_o_dylib_reference *ext_refs; 381} 382bfd_mach_o_dysymtab_command; 383 384/* An indirect symbol table entry is simply a 32bit index into the symbol table 385 to the symbol that the pointer or stub is refering to. Unless it is for a 386 non-lazy symbol pointer section for a defined symbol which strip(1) has 387 removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the 388 symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */ 389 390#define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000 391#define BFD_MACH_O_INDIRECT_SYMBOL_ABS 0x40000000 392#define BFD_MACH_O_INDIRECT_SYMBOL_SIZE 4 393 394/* For LC_TWOLEVEL_HINTS. */ 395 396typedef struct bfd_mach_o_twolevel_hints_command 397{ 398 /* Offset to the hint table. */ 399 unsigned int offset; 400 401 /* Number of entries in the table. */ 402 unsigned int nhints; 403} 404bfd_mach_o_twolevel_hints_command; 405 406/* For LC_PREBIND_CKSUM. */ 407 408typedef struct bfd_mach_o_prebind_cksum_command 409{ 410 /* Checksum or zero. */ 411 unsigned int cksum; 412} 413bfd_mach_o_prebind_cksum_command; 414 415/* For LC_THREAD or LC_UNIXTHREAD. */ 416 417typedef struct bfd_mach_o_thread_flavour 418{ 419 unsigned long flavour; 420 unsigned long offset; 421 unsigned long size; 422} 423bfd_mach_o_thread_flavour; 424 425typedef struct bfd_mach_o_thread_command 426{ 427 unsigned long nflavours; 428 bfd_mach_o_thread_flavour *flavours; 429 asection *section; 430} 431bfd_mach_o_thread_command; 432 433/* For LC_LOAD_DYLINKER and LC_ID_DYLINKER. */ 434 435typedef struct bfd_mach_o_dylinker_command 436{ 437 unsigned int name_offset; /* Offset to library's path name. */ 438 char *name_str; 439} 440bfd_mach_o_dylinker_command; 441 442/* For LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_ID_DYLIB 443 or LC_REEXPORT_DYLIB. */ 444 445typedef struct bfd_mach_o_dylib_command 446{ 447 unsigned int name_offset; /* Offset to library's path name. */ 448 unsigned long timestamp; /* Library's build time stamp. */ 449 unsigned long current_version; /* Library's current version number. */ 450 unsigned long compatibility_version; /* Library's compatibility vers number. */ 451 char *name_str; 452} 453bfd_mach_o_dylib_command; 454 455/* For LC_PREBOUND_DYLIB. */ 456 457typedef struct bfd_mach_o_prebound_dylib_command 458{ 459 unsigned int name_offset; /* Library's path name. */ 460 unsigned int nmodules; /* Number of modules in library. */ 461 unsigned int linked_modules_offset; /* Bit vector of linked modules. */ 462 463 char *name_str; 464 unsigned char *linked_modules; 465} 466bfd_mach_o_prebound_dylib_command; 467 468/* For LC_UUID. */ 469 470typedef struct bfd_mach_o_uuid_command 471{ 472 unsigned char uuid[16]; 473} 474bfd_mach_o_uuid_command; 475 476/* For LC_CODE_SIGNATURE or LC_SEGMENT_SPLIT_INFO. */ 477 478typedef struct bfd_mach_o_linkedit_command 479{ 480 unsigned long dataoff; 481 unsigned long datasize; 482} 483bfd_mach_o_linkedit_command; 484 485typedef struct bfd_mach_o_str_command 486{ 487 unsigned long stroff; 488 unsigned long str_len; 489 char *str; 490} 491bfd_mach_o_str_command; 492 493typedef struct bfd_mach_o_fvmlib_command 494{ 495 unsigned int name_offset; 496 char *name_str; 497 unsigned int minor_version; 498 unsigned int header_addr; 499} 500bfd_mach_o_fvmlib_command; 501 502typedef struct bfd_mach_o_dyld_info_command 503{ 504 /* File offset and size to rebase info. */ 505 unsigned int rebase_off; 506 unsigned int rebase_size; 507 unsigned char *rebase_content; 508 509 /* File offset and size of binding info. */ 510 unsigned int bind_off; 511 unsigned int bind_size; 512 unsigned char *bind_content; 513 514 /* File offset and size of weak binding info. */ 515 unsigned int weak_bind_off; 516 unsigned int weak_bind_size; 517 unsigned char *weak_bind_content; 518 519 /* File offset and size of lazy binding info. */ 520 unsigned int lazy_bind_off; 521 unsigned int lazy_bind_size; 522 unsigned char *lazy_bind_content; 523 524 /* File offset and size of export info. */ 525 unsigned int export_off; 526 unsigned int export_size; 527 unsigned char *export_content; 528} 529bfd_mach_o_dyld_info_command; 530 531typedef struct bfd_mach_o_version_min_command 532{ 533 uint32_t version; 534 uint32_t sdk; 535} 536bfd_mach_o_version_min_command; 537 538typedef struct bfd_mach_o_encryption_info_command 539{ 540 unsigned int cryptoff; 541 unsigned int cryptsize; 542 unsigned int cryptid; 543} 544bfd_mach_o_encryption_info_command; 545 546typedef struct bfd_mach_o_main_command 547{ 548 uint64_t entryoff; 549 uint64_t stacksize; 550} 551bfd_mach_o_main_command; 552 553typedef struct bfd_mach_o_source_version_command 554{ 555 unsigned int a; 556 unsigned short b; 557 unsigned short c; 558 unsigned short d; 559 unsigned short e; 560} 561bfd_mach_o_source_version_command; 562 563typedef struct bfd_mach_o_note_command 564{ 565 char data_owner[16]; 566 uint64_t offset; 567 uint64_t size; 568} 569bfd_mach_o_note_command; 570 571typedef struct bfd_mach_o_build_version_tool 572{ 573 uint32_t tool; 574 uint32_t version; 575} 576bfd_mach_o_build_version_tool; 577 578typedef struct bfd_mach_o_build_version_command 579{ 580 uint32_t platform; 581 uint32_t minos; 582 uint32_t sdk; 583 uint32_t ntools; 584} 585bfd_mach_o_build_version_command; 586 587typedef struct bfd_mach_o_load_command 588{ 589 /* Next command in the single linked list. */ 590 struct bfd_mach_o_load_command *next; 591 592 /* Type and required flag. */ 593 bfd_mach_o_load_command_type type; 594 bool type_required; 595 596 /* Offset and length in the file. */ 597 unsigned int offset; 598 unsigned int len; 599 600 union 601 { 602 bfd_mach_o_segment_command segment; 603 bfd_mach_o_symtab_command symtab; 604 bfd_mach_o_dysymtab_command dysymtab; 605 bfd_mach_o_thread_command thread; 606 bfd_mach_o_dylib_command dylib; 607 bfd_mach_o_dylinker_command dylinker; 608 bfd_mach_o_prebound_dylib_command prebound_dylib; 609 bfd_mach_o_prebind_cksum_command prebind_cksum; 610 bfd_mach_o_twolevel_hints_command twolevel_hints; 611 bfd_mach_o_uuid_command uuid; 612 bfd_mach_o_linkedit_command linkedit; 613 bfd_mach_o_str_command str; 614 bfd_mach_o_dyld_info_command dyld_info; 615 bfd_mach_o_version_min_command version_min; 616 bfd_mach_o_encryption_info_command encryption_info; 617 bfd_mach_o_fvmlib_command fvmlib; 618 bfd_mach_o_main_command main; 619 bfd_mach_o_source_version_command source_version; 620 bfd_mach_o_note_command note; 621 bfd_mach_o_build_version_command build_version; 622 } command; 623} 624bfd_mach_o_load_command; 625 626typedef struct mach_o_data_struct 627{ 628 /* Mach-O header. */ 629 bfd_mach_o_header header; 630 631 /* File offset of the header. Usually this is 0. */ 632 file_ptr hdr_offset; 633 634 /* Array of load commands (length is given by header.ncmds). */ 635 bfd_mach_o_load_command *first_command; 636 bfd_mach_o_load_command *last_command; 637 638 /* Flatten array of sections. The array is 0-based. */ 639 unsigned long nsects; 640 bfd_mach_o_section **sections; 641 642 /* Used while writing: current length of the output file. This is used 643 to allocate space in the file. */ 644 ufile_ptr filelen; 645 646 /* As symtab is referenced by other load command, it is handy to have 647 a direct access to it. Although it is not clearly stated, only one symtab 648 is expected. */ 649 bfd_mach_o_symtab_command *symtab; 650 bfd_mach_o_dysymtab_command *dysymtab; 651 652 /* A place to stash dwarf2 info for this bfd. */ 653 void *dwarf2_find_line_info; 654 655 /* BFD of .dSYM file. */ 656 bfd *dsym_bfd; 657 658 /* Cache of dynamic relocs. */ 659 arelent *dyn_reloc_cache; 660} 661bfd_mach_o_data_struct; 662 663typedef struct bfd_mach_o_xlat_name 664{ 665 const char *name; 666 unsigned long val; 667} 668bfd_mach_o_xlat_name; 669 670/* Target specific routines. */ 671 672#define bfd_mach_o_get_data(abfd) ((abfd)->tdata.mach_o_data) 673#define bfd_mach_o_get_backend_data(abfd) \ 674 ((bfd_mach_o_backend_data*)(abfd)->xvec->backend_data) 675 676/* Get the Mach-O header for section SEC. */ 677#define bfd_mach_o_get_mach_o_section(sec) \ 678 ((bfd_mach_o_section *)(sec)->used_by_bfd) 679 680bool bfd_mach_o_valid (bfd *); 681bool bfd_mach_o_mkobject_init (bfd *); 682bfd_cleanup bfd_mach_o_object_p (bfd *); 683bfd_cleanup bfd_mach_o_core_p (bfd *); 684bfd_cleanup bfd_mach_o_fat_archive_p (bfd *); 685bfd *bfd_mach_o_fat_openr_next_archived_file (bfd *, bfd *); 686bool bfd_mach_o_set_arch_mach (bfd *, enum bfd_architecture, unsigned long); 687int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, 688 bfd_mach_o_load_command **); 689bool bfd_mach_o_new_section_hook (bfd *, asection *); 690bool bfd_mach_o_write_contents (bfd *); 691bool bfd_mach_o_bfd_copy_private_symbol_data (bfd *, asymbol *, 692 bfd *, asymbol *); 693bool bfd_mach_o_bfd_copy_private_section_data (bfd *, asection *, 694 bfd *, asection *); 695bool bfd_mach_o_bfd_copy_private_header_data (bfd *, bfd *); 696bool bfd_mach_o_bfd_set_private_flags (bfd *, flagword); 697bool bfd_mach_o_bfd_print_private_bfd_data (bfd *, void *); 698long bfd_mach_o_get_symtab_upper_bound (bfd *); 699long bfd_mach_o_canonicalize_symtab (bfd *, asymbol **); 700long bfd_mach_o_get_synthetic_symtab (bfd *, long, asymbol **, long, 701 asymbol **, asymbol **ret); 702long bfd_mach_o_get_reloc_upper_bound (bfd *, asection *); 703long bfd_mach_o_canonicalize_reloc (bfd *, asection *, arelent **, asymbol **); 704long bfd_mach_o_get_dynamic_reloc_upper_bound (bfd *); 705long bfd_mach_o_canonicalize_dynamic_reloc (bfd *, arelent **, asymbol **); 706asymbol *bfd_mach_o_make_empty_symbol (bfd *); 707void bfd_mach_o_get_symbol_info (bfd *, asymbol *, symbol_info *); 708void bfd_mach_o_print_symbol (bfd *, void *, asymbol *, bfd_print_symbol_type); 709int bfd_mach_o_sizeof_headers (bfd *, struct bfd_link_info *); 710unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type); 711int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *); 712char *bfd_mach_o_core_file_failing_command (bfd *); 713int bfd_mach_o_core_file_failing_signal (bfd *); 714bool bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *); 715bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *); 716bfd_cleanup bfd_mach_o_header_p (bfd *, file_ptr, bfd_mach_o_filetype, 717 bfd_mach_o_cpu_type); 718bool bfd_mach_o_build_commands (bfd *); 719bool bfd_mach_o_set_section_contents (bfd *, asection *, const void *, 720 file_ptr, bfd_size_type); 721unsigned int bfd_mach_o_version (bfd *); 722 723unsigned int bfd_mach_o_get_section_type_from_name (bfd *, const char *); 724unsigned int bfd_mach_o_get_section_attribute_from_name (const char *); 725 726void bfd_mach_o_convert_section_name_to_bfd (bfd *, const char *, const char *, 727 const char **, flagword *); 728bool bfd_mach_o_find_nearest_line (bfd *, asymbol **, 729 asection *, bfd_vma, 730 const char **, const char **, 731 unsigned int *, unsigned int *); 732#define bfd_mach_o_find_nearest_line_with_alt \ 733 _bfd_nosymbols_find_nearest_line_with_alt 734#define bfd_mach_o_find_line _bfd_nosymbols_find_line 735bool bfd_mach_o_close_and_cleanup (bfd *); 736bool bfd_mach_o_free_cached_info (bfd *); 737 738unsigned int bfd_mach_o_section_get_nbr_indirect (bfd *, bfd_mach_o_section *); 739unsigned int bfd_mach_o_section_get_entry_size (bfd *, bfd_mach_o_section *); 740bool bfd_mach_o_read_symtab_symbols (bfd *); 741bool bfd_mach_o_read_symtab_strtab (bfd *abfd); 742 743bfd_vma bfd_mach_o_get_base_address (bfd *); 744 745void bfd_mach_o_swap_in_non_scattered_reloc (bfd *, bfd_mach_o_reloc_info *, 746 unsigned char *); 747bool bfd_mach_o_canonicalize_non_scattered_reloc (bfd *, bfd_mach_o_reloc_info *, arelent *, asymbol **); 748bool bfd_mach_o_pre_canonicalize_one_reloc (bfd *, struct mach_o_reloc_info_external *, bfd_mach_o_reloc_info *, arelent *, asymbol **); 749 750/* A placeholder in case we need to suppress emitting the dysymtab for some 751 reason (e.g. compatibility with older system versions). */ 752#define bfd_mach_o_should_emit_dysymtab(x) true 753 754extern const bfd_mach_o_xlat_name bfd_mach_o_section_attribute_name[]; 755extern const bfd_mach_o_xlat_name bfd_mach_o_section_type_name[]; 756 757extern const bfd_target mach_o_fat_vec; 758 759/* Interfaces between BFD names and Mach-O names. */ 760 761typedef struct mach_o_section_name_xlat 762{ 763 const char *bfd_name; 764 const char *mach_o_name; 765 flagword bfd_flags; 766 unsigned int macho_sectype; 767 unsigned int macho_secattr; 768 unsigned int sectalign; 769} mach_o_section_name_xlat; 770 771typedef struct mach_o_segment_name_xlat 772{ 773 const char *segname; 774 const mach_o_section_name_xlat *sections; 775} mach_o_segment_name_xlat; 776 777const mach_o_section_name_xlat * 778bfd_mach_o_section_data_for_mach_sect (bfd *, const char *, const char *); 779const mach_o_section_name_xlat * 780bfd_mach_o_section_data_for_bfd_name (bfd *, const char *, const char **); 781 782typedef struct bfd_mach_o_backend_data 783{ 784 enum bfd_architecture arch; 785 bfd_vma page_size; 786 bool (*_bfd_mach_o_canonicalize_one_reloc) 787 (bfd *, struct mach_o_reloc_info_external *, arelent *, asymbol **, arelent *); 788 bool (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *); 789 bool (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *, 790 void *, char *); 791 const mach_o_segment_name_xlat *segsec_names_xlat; 792 bool (*bfd_mach_o_section_type_valid_for_target) (unsigned long); 793} 794bfd_mach_o_backend_data; 795 796/* Values used in symbol.udata.i, to signal that the mach-o-specific data in the 797 symbol are not yet set, or need validation (where this is possible). */ 798 799#define SYM_MACHO_FIELDS_UNSET ((bfd_vma) -1) 800#define SYM_MACHO_FIELDS_NOT_VALIDATED ((bfd_vma) -2) 801 802#ifdef __cplusplus 803} 804#endif 805 806#endif /* _BFD_MACH_O_H_ */ 807