1 /* od-macho.c -- dump information about an Mach-O object file. 2 Copyright (C) 2011-2018 Free Software Foundation, Inc. 3 Written by Tristan Gingold, Adacore. 4 5 This file is part of GNU Binutils. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 #include "sysdep.h" 23 #include <stddef.h> 24 #include <time.h> 25 #include "safe-ctype.h" 26 #include "bfd.h" 27 #include "objdump.h" 28 #include "bucomm.h" 29 #include "dwarf.h" 30 #include "bfdlink.h" 31 #include "mach-o.h" 32 #include "mach-o/external.h" 33 #include "mach-o/codesign.h" 34 #include "mach-o/unwind.h" 35 36 /* Index of the options in the options[] array. */ 37 #define OPT_HEADER 0 38 #define OPT_SECTION 1 39 #define OPT_MAP 2 40 #define OPT_LOAD 3 41 #define OPT_DYSYMTAB 4 42 #define OPT_CODESIGN 5 43 #define OPT_SEG_SPLIT_INFO 6 44 #define OPT_COMPACT_UNWIND 7 45 #define OPT_FUNCTION_STARTS 8 46 #define OPT_DATA_IN_CODE 9 47 #define OPT_TWOLEVEL_HINTS 10 48 #define OPT_DYLD_INFO 11 49 50 /* List of actions. */ 51 static struct objdump_private_option options[] = 52 { 53 { "header", 0 }, 54 { "section", 0 }, 55 { "map", 0 }, 56 { "load", 0 }, 57 { "dysymtab", 0 }, 58 { "codesign", 0 }, 59 { "seg_split_info", 0 }, 60 { "compact_unwind", 0 }, 61 { "function_starts", 0 }, 62 { "data_in_code", 0 }, 63 { "twolevel_hints", 0 }, 64 { "dyld_info", 0 }, 65 { NULL, 0 } 66 }; 67 68 /* Display help. */ 69 70 static void 71 mach_o_help (FILE *stream) 72 { 73 fprintf (stream, _("\ 74 For Mach-O files:\n\ 75 header Display the file header\n\ 76 section Display the segments and sections commands\n\ 77 map Display the section map\n\ 78 load Display the load commands\n\ 79 dysymtab Display the dynamic symbol table\n\ 80 codesign Display code signature\n\ 81 seg_split_info Display segment split info\n\ 82 compact_unwind Display compact unwinding info\n\ 83 function_starts Display start address of functions\n\ 84 data_in_code Display data in code entries\n\ 85 twolevel_hints Display the two-level namespace lookup hints table\n\ 86 dyld_info Display dyld information\n\ 87 ")); 88 } 89 90 /* Return TRUE if ABFD is handled. */ 91 92 static int 93 mach_o_filter (bfd *abfd) 94 { 95 return bfd_get_flavour (abfd) == bfd_target_mach_o_flavour; 96 } 97 98 static const bfd_mach_o_xlat_name bfd_mach_o_cpu_name[] = 99 { 100 { "vax", BFD_MACH_O_CPU_TYPE_VAX }, 101 { "mc680x0", BFD_MACH_O_CPU_TYPE_MC680x0 }, 102 { "i386", BFD_MACH_O_CPU_TYPE_I386 }, 103 { "mips", BFD_MACH_O_CPU_TYPE_MIPS }, 104 { "mc98000", BFD_MACH_O_CPU_TYPE_MC98000 }, 105 { "hppa", BFD_MACH_O_CPU_TYPE_HPPA }, 106 { "arm", BFD_MACH_O_CPU_TYPE_ARM }, 107 { "mc88000", BFD_MACH_O_CPU_TYPE_MC88000 }, 108 { "sparc", BFD_MACH_O_CPU_TYPE_SPARC }, 109 { "alpha", BFD_MACH_O_CPU_TYPE_ALPHA }, 110 { "powerpc", BFD_MACH_O_CPU_TYPE_POWERPC }, 111 { "powerpc_64", BFD_MACH_O_CPU_TYPE_POWERPC_64 }, 112 { "x86_64", BFD_MACH_O_CPU_TYPE_X86_64 }, 113 { "arm64", BFD_MACH_O_CPU_TYPE_ARM64 }, 114 { NULL, 0} 115 }; 116 117 static const bfd_mach_o_xlat_name bfd_mach_o_filetype_name[] = 118 { 119 { "object", BFD_MACH_O_MH_OBJECT }, 120 { "execute", BFD_MACH_O_MH_EXECUTE }, 121 { "fvmlib", BFD_MACH_O_MH_FVMLIB }, 122 { "core", BFD_MACH_O_MH_CORE }, 123 { "preload", BFD_MACH_O_MH_PRELOAD }, 124 { "dylib", BFD_MACH_O_MH_DYLIB }, 125 { "dylinker", BFD_MACH_O_MH_DYLINKER }, 126 { "bundle", BFD_MACH_O_MH_BUNDLE }, 127 { "dylib_stub", BFD_MACH_O_MH_DYLIB_STUB }, 128 { "dym", BFD_MACH_O_MH_DSYM }, 129 { "kext_bundle", BFD_MACH_O_MH_KEXT_BUNDLE }, 130 { NULL, 0} 131 }; 132 133 static const bfd_mach_o_xlat_name bfd_mach_o_header_flags_name[] = 134 { 135 { "noundefs", BFD_MACH_O_MH_NOUNDEFS }, 136 { "incrlink", BFD_MACH_O_MH_INCRLINK }, 137 { "dyldlink", BFD_MACH_O_MH_DYLDLINK }, 138 { "bindatload", BFD_MACH_O_MH_BINDATLOAD }, 139 { "prebound", BFD_MACH_O_MH_PREBOUND }, 140 { "split_segs", BFD_MACH_O_MH_SPLIT_SEGS }, 141 { "lazy_init", BFD_MACH_O_MH_LAZY_INIT }, 142 { "twolevel", BFD_MACH_O_MH_TWOLEVEL }, 143 { "force_flat", BFD_MACH_O_MH_FORCE_FLAT }, 144 { "nomultidefs", BFD_MACH_O_MH_NOMULTIDEFS }, 145 { "nofixprebinding", BFD_MACH_O_MH_NOFIXPREBINDING }, 146 { "prebindable", BFD_MACH_O_MH_PREBINDABLE }, 147 { "allmodsbound", BFD_MACH_O_MH_ALLMODSBOUND }, 148 { "subsections_via_symbols", BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS }, 149 { "canonical", BFD_MACH_O_MH_CANONICAL }, 150 { "weak_defines", BFD_MACH_O_MH_WEAK_DEFINES }, 151 { "binds_to_weak", BFD_MACH_O_MH_BINDS_TO_WEAK }, 152 { "allow_stack_execution", BFD_MACH_O_MH_ALLOW_STACK_EXECUTION }, 153 { "root_safe", BFD_MACH_O_MH_ROOT_SAFE }, 154 { "setuid_safe", BFD_MACH_O_MH_SETUID_SAFE }, 155 { "no_reexported_dylibs", BFD_MACH_O_MH_NO_REEXPORTED_DYLIBS }, 156 { "pie", BFD_MACH_O_MH_PIE }, 157 { "dead_strippable_dylib", BFD_MACH_O_MH_DEAD_STRIPPABLE_DYLIB }, 158 { "has_tlv", BFD_MACH_O_MH_HAS_TLV_DESCRIPTORS }, 159 { "no_heap_execution", BFD_MACH_O_MH_NO_HEAP_EXECUTION }, 160 { "app_extension_safe", BFD_MACH_O_MH_APP_EXTENSION_SAFE }, 161 { NULL, 0} 162 }; 163 164 static const bfd_mach_o_xlat_name bfd_mach_o_load_command_name[] = 165 { 166 { "segment", BFD_MACH_O_LC_SEGMENT}, 167 { "symtab", BFD_MACH_O_LC_SYMTAB}, 168 { "symseg", BFD_MACH_O_LC_SYMSEG}, 169 { "thread", BFD_MACH_O_LC_THREAD}, 170 { "unixthread", BFD_MACH_O_LC_UNIXTHREAD}, 171 { "loadfvmlib", BFD_MACH_O_LC_LOADFVMLIB}, 172 { "idfvmlib", BFD_MACH_O_LC_IDFVMLIB}, 173 { "ident", BFD_MACH_O_LC_IDENT}, 174 { "fvmfile", BFD_MACH_O_LC_FVMFILE}, 175 { "prepage", BFD_MACH_O_LC_PREPAGE}, 176 { "dysymtab", BFD_MACH_O_LC_DYSYMTAB}, 177 { "load_dylib", BFD_MACH_O_LC_LOAD_DYLIB}, 178 { "id_dylib", BFD_MACH_O_LC_ID_DYLIB}, 179 { "load_dylinker", BFD_MACH_O_LC_LOAD_DYLINKER}, 180 { "id_dylinker", BFD_MACH_O_LC_ID_DYLINKER}, 181 { "prebound_dylib", BFD_MACH_O_LC_PREBOUND_DYLIB}, 182 { "routines", BFD_MACH_O_LC_ROUTINES}, 183 { "sub_framework", BFD_MACH_O_LC_SUB_FRAMEWORK}, 184 { "sub_umbrella", BFD_MACH_O_LC_SUB_UMBRELLA}, 185 { "sub_client", BFD_MACH_O_LC_SUB_CLIENT}, 186 { "sub_library", BFD_MACH_O_LC_SUB_LIBRARY}, 187 { "twolevel_hints", BFD_MACH_O_LC_TWOLEVEL_HINTS}, 188 { "prebind_cksum", BFD_MACH_O_LC_PREBIND_CKSUM}, 189 { "load_weak_dylib", BFD_MACH_O_LC_LOAD_WEAK_DYLIB}, 190 { "segment_64", BFD_MACH_O_LC_SEGMENT_64}, 191 { "routines_64", BFD_MACH_O_LC_ROUTINES_64}, 192 { "uuid", BFD_MACH_O_LC_UUID}, 193 { "rpath", BFD_MACH_O_LC_RPATH}, 194 { "code_signature", BFD_MACH_O_LC_CODE_SIGNATURE}, 195 { "segment_split_info", BFD_MACH_O_LC_SEGMENT_SPLIT_INFO}, 196 { "reexport_dylib", BFD_MACH_O_LC_REEXPORT_DYLIB}, 197 { "lazy_load_dylib", BFD_MACH_O_LC_LAZY_LOAD_DYLIB}, 198 { "encryption_info", BFD_MACH_O_LC_ENCRYPTION_INFO}, 199 { "dyld_info", BFD_MACH_O_LC_DYLD_INFO}, 200 { "load_upward_lib", BFD_MACH_O_LC_LOAD_UPWARD_DYLIB}, 201 { "version_min_macosx", BFD_MACH_O_LC_VERSION_MIN_MACOSX}, 202 { "version_min_iphoneos", BFD_MACH_O_LC_VERSION_MIN_IPHONEOS}, 203 { "function_starts", BFD_MACH_O_LC_FUNCTION_STARTS}, 204 { "dyld_environment", BFD_MACH_O_LC_DYLD_ENVIRONMENT}, 205 { "main", BFD_MACH_O_LC_MAIN}, 206 { "data_in_code", BFD_MACH_O_LC_DATA_IN_CODE}, 207 { "source_version", BFD_MACH_O_LC_SOURCE_VERSION}, 208 { "dylib_code_sign_drs", BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS}, 209 { "encryption_info_64", BFD_MACH_O_LC_ENCRYPTION_INFO_64}, 210 { "linker_options", BFD_MACH_O_LC_LINKER_OPTIONS}, 211 { "linker_optimization_hint", BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT}, 212 { NULL, 0} 213 }; 214 215 static const bfd_mach_o_xlat_name bfd_mach_o_thread_x86_name[] = 216 { 217 { "thread_state32", BFD_MACH_O_x86_THREAD_STATE32}, 218 { "float_state32", BFD_MACH_O_x86_FLOAT_STATE32}, 219 { "exception_state32", BFD_MACH_O_x86_EXCEPTION_STATE32}, 220 { "thread_state64", BFD_MACH_O_x86_THREAD_STATE64}, 221 { "float_state64", BFD_MACH_O_x86_FLOAT_STATE64}, 222 { "exception_state64", BFD_MACH_O_x86_EXCEPTION_STATE64}, 223 { "thread_state", BFD_MACH_O_x86_THREAD_STATE}, 224 { "float_state", BFD_MACH_O_x86_FLOAT_STATE}, 225 { "exception_state", BFD_MACH_O_x86_EXCEPTION_STATE}, 226 { "debug_state32", BFD_MACH_O_x86_DEBUG_STATE32}, 227 { "debug_state64", BFD_MACH_O_x86_DEBUG_STATE64}, 228 { "debug_state", BFD_MACH_O_x86_DEBUG_STATE}, 229 { "state_none", BFD_MACH_O_x86_THREAD_STATE_NONE}, 230 { NULL, 0 } 231 }; 232 233 static void 234 bfd_mach_o_print_flags (const bfd_mach_o_xlat_name *table, 235 unsigned long val) 236 { 237 int first = 1; 238 239 for (; table->name; table++) 240 { 241 if (table->val & val) 242 { 243 if (!first) 244 printf ("+"); 245 printf ("%s", table->name); 246 val &= ~table->val; 247 first = 0; 248 } 249 } 250 if (val) 251 { 252 if (!first) 253 printf ("+"); 254 printf ("0x%lx", val); 255 return; 256 } 257 if (first) 258 printf ("-"); 259 } 260 261 /* Print a bfd_uint64_t, using a platform independent style. */ 262 263 static void 264 printf_uint64 (bfd_uint64_t v) 265 { 266 printf ("0x%08lx%08lx", 267 (unsigned long)((v >> 16) >> 16), (unsigned long)(v & 0xffffffffUL)); 268 } 269 270 static const char * 271 bfd_mach_o_get_name_or_null (const bfd_mach_o_xlat_name *table, 272 unsigned long val) 273 { 274 for (; table->name; table++) 275 if (table->val == val) 276 return table->name; 277 return NULL; 278 } 279 280 static const char * 281 bfd_mach_o_get_name (const bfd_mach_o_xlat_name *table, unsigned long val) 282 { 283 const char *res = bfd_mach_o_get_name_or_null (table, val); 284 285 if (res == NULL) 286 return "*UNKNOWN*"; 287 else 288 return res; 289 } 290 291 static void 292 dump_header (bfd *abfd) 293 { 294 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 295 bfd_mach_o_header *h = &mdata->header; 296 297 fputs (_("Mach-O header:\n"), stdout); 298 printf (_(" magic : %08lx\n"), h->magic); 299 printf (_(" cputype : %08lx (%s)\n"), h->cputype, 300 bfd_mach_o_get_name (bfd_mach_o_cpu_name, h->cputype)); 301 printf (_(" cpusubtype: %08lx\n"), h->cpusubtype); 302 printf (_(" filetype : %08lx (%s)\n"), 303 h->filetype, 304 bfd_mach_o_get_name (bfd_mach_o_filetype_name, h->filetype)); 305 printf (_(" ncmds : %08lx (%lu)\n"), h->ncmds, h->ncmds); 306 printf (_(" sizeofcmds: %08lx (%lu)\n"), h->sizeofcmds, h->sizeofcmds); 307 printf (_(" flags : %08lx ("), h->flags); 308 bfd_mach_o_print_flags (bfd_mach_o_header_flags_name, h->flags); 309 fputs (_(")\n"), stdout); 310 printf (_(" reserved : %08x\n"), h->reserved); 311 putchar ('\n'); 312 } 313 314 static void 315 disp_segment_prot (unsigned int prot) 316 { 317 putchar (prot & BFD_MACH_O_PROT_READ ? 'r' : '-'); 318 putchar (prot & BFD_MACH_O_PROT_WRITE ? 'w' : '-'); 319 putchar (prot & BFD_MACH_O_PROT_EXECUTE ? 'x' : '-'); 320 } 321 322 static void 323 dump_section_map (bfd *abfd) 324 { 325 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 326 bfd_mach_o_load_command *cmd; 327 unsigned int sec_nbr = 0; 328 329 fputs (_("Segments and Sections:\n"), stdout); 330 fputs (_(" #: Segment name Section name Address\n"), stdout); 331 332 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next) 333 { 334 bfd_mach_o_segment_command *seg; 335 bfd_mach_o_section *sec; 336 337 if (cmd->type != BFD_MACH_O_LC_SEGMENT 338 && cmd->type != BFD_MACH_O_LC_SEGMENT_64) 339 continue; 340 341 seg = &cmd->command.segment; 342 343 printf ("[Segment %-16s ", seg->segname); 344 printf_vma (seg->vmaddr); 345 putchar ('-'); 346 printf_vma (seg->vmaddr + seg->vmsize - 1); 347 putchar (' '); 348 disp_segment_prot (seg->initprot); 349 printf ("]\n"); 350 351 for (sec = seg->sect_head; sec != NULL; sec = sec->next) 352 { 353 printf ("%02u: %-16s %-16s ", ++sec_nbr, 354 sec->segname, sec->sectname); 355 printf_vma (sec->addr); 356 putchar (' '); 357 printf_vma (sec->size); 358 printf (" %08lx\n", sec->flags); 359 } 360 } 361 } 362 363 static void 364 dump_section_header (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_section *sec) 365 { 366 printf (" Section: %-16s %-16s (bfdname: %s)\n", 367 sec->sectname, sec->segname, sec->bfdsection->name); 368 printf (" addr: "); 369 printf_vma (sec->addr); 370 printf (" size: "); 371 printf_vma (sec->size); 372 printf (" offset: "); 373 printf_vma (sec->offset); 374 printf ("\n"); 375 printf (" align: %ld", sec->align); 376 printf (" nreloc: %lu reloff: ", sec->nreloc); 377 printf_vma (sec->reloff); 378 printf ("\n"); 379 printf (" flags: %08lx (type: %s", sec->flags, 380 bfd_mach_o_get_name (bfd_mach_o_section_type_name, 381 sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)); 382 printf (" attr: "); 383 bfd_mach_o_print_flags (bfd_mach_o_section_attribute_name, 384 sec->flags & BFD_MACH_O_SECTION_ATTRIBUTES_MASK); 385 printf (")\n"); 386 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) 387 { 388 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: 389 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: 390 case BFD_MACH_O_S_SYMBOL_STUBS: 391 printf (" first indirect sym: %lu", sec->reserved1); 392 printf (" (%u entries)", 393 bfd_mach_o_section_get_nbr_indirect (abfd, sec)); 394 break; 395 default: 396 printf (" reserved1: 0x%lx", sec->reserved1); 397 break; 398 } 399 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) 400 { 401 case BFD_MACH_O_S_SYMBOL_STUBS: 402 printf (" stub size: %lu", sec->reserved2); 403 break; 404 default: 405 printf (" reserved2: 0x%lx", sec->reserved2); 406 break; 407 } 408 printf (" reserved3: 0x%lx\n", sec->reserved3); 409 } 410 411 static void 412 dump_segment (bfd *abfd ATTRIBUTE_UNUSED, bfd_mach_o_load_command *cmd) 413 { 414 bfd_mach_o_segment_command *seg = &cmd->command.segment; 415 bfd_mach_o_section *sec; 416 417 printf (" name: %16s", *seg->segname ? seg->segname : "*none*"); 418 printf (" nsects: %lu", seg->nsects); 419 printf (" flags: %lx", seg->flags); 420 printf (" initprot: "); 421 disp_segment_prot (seg->initprot); 422 printf (" maxprot: "); 423 disp_segment_prot (seg->maxprot); 424 printf ("\n"); 425 printf (" vmaddr: "); 426 printf_vma (seg->vmaddr); 427 printf (" vmsize: "); 428 printf_vma (seg->vmsize); 429 printf ("\n"); 430 printf (" fileoff: "); 431 printf_vma (seg->fileoff); 432 printf (" filesize: "); 433 printf_vma ((bfd_vma)seg->filesize); 434 printf (" endoff: "); 435 printf_vma ((bfd_vma)(seg->fileoff + seg->filesize)); 436 printf ("\n"); 437 for (sec = seg->sect_head; sec != NULL; sec = sec->next) 438 dump_section_header (abfd, sec); 439 } 440 441 static void 442 dump_dysymtab (bfd *abfd, bfd_mach_o_load_command *cmd, bfd_boolean verbose) 443 { 444 bfd_mach_o_dysymtab_command *dysymtab = &cmd->command.dysymtab; 445 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 446 unsigned int i; 447 448 printf (" local symbols: idx: %10lu num: %-8lu", 449 dysymtab->ilocalsym, dysymtab->nlocalsym); 450 printf (" (nxtidx: %lu)\n", 451 dysymtab->ilocalsym + dysymtab->nlocalsym); 452 printf (" external symbols: idx: %10lu num: %-8lu", 453 dysymtab->iextdefsym, dysymtab->nextdefsym); 454 printf (" (nxtidx: %lu)\n", 455 dysymtab->iextdefsym + dysymtab->nextdefsym); 456 printf (" undefined symbols: idx: %10lu num: %-8lu", 457 dysymtab->iundefsym, dysymtab->nundefsym); 458 printf (" (nxtidx: %lu)\n", 459 dysymtab->iundefsym + dysymtab->nundefsym); 460 printf (" table of content: off: 0x%08lx num: %-8lu", 461 dysymtab->tocoff, dysymtab->ntoc); 462 printf (" (endoff: 0x%08lx)\n", 463 dysymtab->tocoff + dysymtab->ntoc * BFD_MACH_O_TABLE_OF_CONTENT_SIZE); 464 printf (" module table: off: 0x%08lx num: %-8lu", 465 dysymtab->modtaboff, dysymtab->nmodtab); 466 printf (" (endoff: 0x%08lx)\n", 467 dysymtab->modtaboff + dysymtab->nmodtab 468 * (mdata->header.version == 2 ? 469 BFD_MACH_O_DYLIB_MODULE_64_SIZE : BFD_MACH_O_DYLIB_MODULE_SIZE)); 470 printf (" external reference table: off: 0x%08lx num: %-8lu", 471 dysymtab->extrefsymoff, dysymtab->nextrefsyms); 472 printf (" (endoff: 0x%08lx)\n", 473 dysymtab->extrefsymoff 474 + dysymtab->nextrefsyms * BFD_MACH_O_REFERENCE_SIZE); 475 printf (" indirect symbol table: off: 0x%08lx num: %-8lu", 476 dysymtab->indirectsymoff, dysymtab->nindirectsyms); 477 printf (" (endoff: 0x%08lx)\n", 478 dysymtab->indirectsymoff 479 + dysymtab->nindirectsyms * BFD_MACH_O_INDIRECT_SYMBOL_SIZE); 480 printf (" external relocation table: off: 0x%08lx num: %-8lu", 481 dysymtab->extreloff, dysymtab->nextrel); 482 printf (" (endoff: 0x%08lx)\n", 483 dysymtab->extreloff + dysymtab->nextrel * BFD_MACH_O_RELENT_SIZE); 484 printf (" local relocation table: off: 0x%08lx num: %-8lu", 485 dysymtab->locreloff, dysymtab->nlocrel); 486 printf (" (endoff: 0x%08lx)\n", 487 dysymtab->locreloff + dysymtab->nlocrel * BFD_MACH_O_RELENT_SIZE); 488 489 if (!verbose) 490 return; 491 492 if (dysymtab->ntoc > 0 493 || dysymtab->nindirectsyms > 0 494 || dysymtab->nextrefsyms > 0) 495 { 496 /* Try to read the symbols to display the toc or indirect symbols. */ 497 bfd_mach_o_read_symtab_symbols (abfd); 498 } 499 else if (dysymtab->nmodtab > 0) 500 { 501 /* Try to read the strtab to display modules name. */ 502 bfd_mach_o_read_symtab_strtab (abfd); 503 } 504 505 for (i = 0; i < dysymtab->nmodtab; i++) 506 { 507 bfd_mach_o_dylib_module *module = &dysymtab->dylib_module[i]; 508 printf (" module %u:\n", i); 509 printf (" name: %lu", module->module_name_idx); 510 if (mdata->symtab && mdata->symtab->strtab) 511 printf (": %s", 512 mdata->symtab->strtab + module->module_name_idx); 513 printf ("\n"); 514 printf (" extdefsym: idx: %8lu num: %lu\n", 515 module->iextdefsym, module->nextdefsym); 516 printf (" refsym: idx: %8lu num: %lu\n", 517 module->irefsym, module->nrefsym); 518 printf (" localsym: idx: %8lu num: %lu\n", 519 module->ilocalsym, module->nlocalsym); 520 printf (" extrel: idx: %8lu num: %lu\n", 521 module->iextrel, module->nextrel); 522 printf (" init: idx: %8u num: %u\n", 523 module->iinit, module->ninit); 524 printf (" term: idx: %8u num: %u\n", 525 module->iterm, module->nterm); 526 printf (" objc_module_info: addr: "); 527 printf_vma (module->objc_module_info_addr); 528 printf (" size: %lu\n", module->objc_module_info_size); 529 } 530 531 if (dysymtab->ntoc > 0) 532 { 533 bfd_mach_o_symtab_command *symtab = mdata->symtab; 534 535 printf (" table of content: (symbol/module)\n"); 536 for (i = 0; i < dysymtab->ntoc; i++) 537 { 538 bfd_mach_o_dylib_table_of_content *toc = &dysymtab->dylib_toc[i]; 539 540 printf (" %4u: ", i); 541 if (symtab && symtab->symbols && toc->symbol_index < symtab->nsyms) 542 { 543 const char *name = symtab->symbols[toc->symbol_index].symbol.name; 544 printf ("%s (%lu)", name ? name : "*invalid*", 545 toc->symbol_index); 546 } 547 else 548 printf ("%lu", toc->symbol_index); 549 550 printf (" / "); 551 if (symtab && symtab->strtab 552 && toc->module_index < dysymtab->nmodtab) 553 { 554 bfd_mach_o_dylib_module *mod; 555 mod = &dysymtab->dylib_module[toc->module_index]; 556 printf ("%s (%lu)", 557 symtab->strtab + mod->module_name_idx, 558 toc->module_index); 559 } 560 else 561 printf ("%lu", toc->module_index); 562 563 printf ("\n"); 564 } 565 } 566 567 if (dysymtab->nindirectsyms != 0) 568 { 569 printf (" indirect symbols:\n"); 570 571 for (i = 0; i < mdata->nsects; i++) 572 { 573 bfd_mach_o_section *sec = mdata->sections[i]; 574 unsigned int j, first, last; 575 bfd_mach_o_symtab_command *symtab = mdata->symtab; 576 bfd_vma addr; 577 bfd_vma entry_size; 578 579 switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK) 580 { 581 case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS: 582 case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS: 583 case BFD_MACH_O_S_SYMBOL_STUBS: 584 first = sec->reserved1; 585 last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec); 586 addr = sec->addr; 587 entry_size = bfd_mach_o_section_get_entry_size (abfd, sec); 588 printf (" for section %s.%s:\n", 589 sec->segname, sec->sectname); 590 for (j = first; j < last; j++) 591 { 592 unsigned int isym = dysymtab->indirect_syms[j]; 593 594 printf (" "); 595 printf_vma (addr); 596 printf (" %5u: 0x%08x", j, isym); 597 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_LOCAL) 598 printf (" LOCAL"); 599 if (isym & BFD_MACH_O_INDIRECT_SYMBOL_ABS) 600 printf (" ABSOLUTE"); 601 if (symtab && symtab->symbols 602 && isym < symtab->nsyms 603 && symtab->symbols[isym].symbol.name) 604 printf (" %s", symtab->symbols[isym].symbol.name); 605 printf ("\n"); 606 addr += entry_size; 607 } 608 break; 609 default: 610 break; 611 } 612 } 613 } 614 if (dysymtab->nextrefsyms > 0) 615 { 616 bfd_mach_o_symtab_command *symtab = mdata->symtab; 617 618 printf (" external reference table: (symbol flags)\n"); 619 for (i = 0; i < dysymtab->nextrefsyms; i++) 620 { 621 bfd_mach_o_dylib_reference *ref = &dysymtab->ext_refs[i]; 622 623 printf (" %4u: %5lu 0x%02lx", i, ref->isym, ref->flags); 624 if (symtab && symtab->symbols 625 && ref->isym < symtab->nsyms 626 && symtab->symbols[ref->isym].symbol.name) 627 printf (" %s", symtab->symbols[ref->isym].symbol.name); 628 printf ("\n"); 629 } 630 } 631 632 } 633 634 static bfd_boolean 635 load_and_dump (bfd *abfd, ufile_ptr off, unsigned int len, 636 void (*dump)(bfd *abfd, unsigned char *buf, unsigned int len, 637 ufile_ptr off)) 638 { 639 unsigned char *buf; 640 641 if (len == 0) 642 return TRUE; 643 644 buf = xmalloc (len); 645 646 if (bfd_seek (abfd, off, SEEK_SET) == 0 647 && bfd_bread (buf, len, abfd) == len) 648 dump (abfd, buf, len, off); 649 else 650 return FALSE; 651 652 free (buf); 653 return TRUE; 654 } 655 656 static const bfd_mach_o_xlat_name bfd_mach_o_dyld_rebase_type_name[] = 657 { 658 { "pointer", BFD_MACH_O_REBASE_TYPE_POINTER }, 659 { "text_abs32", BFD_MACH_O_REBASE_TYPE_TEXT_ABSOLUTE32 }, 660 { "text_pcrel32", BFD_MACH_O_REBASE_TYPE_TEXT_PCREL32 }, 661 { NULL, 0 } 662 }; 663 664 static void 665 dump_dyld_info_rebase (bfd *abfd, unsigned char *buf, unsigned int len, 666 ufile_ptr off ATTRIBUTE_UNUSED) 667 { 668 unsigned int i; 669 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 670 unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4; 671 672 for (i = 0; i < len; ) 673 { 674 unsigned char b = buf[i++]; 675 unsigned char imm = b & BFD_MACH_O_REBASE_IMMEDIATE_MASK; 676 bfd_vma leb; 677 unsigned int leblen; 678 679 printf (" [0x%04x] 0x%02x: ", i, b); 680 switch (b & BFD_MACH_O_REBASE_OPCODE_MASK) 681 { 682 case BFD_MACH_O_REBASE_OPCODE_DONE: 683 printf ("done\n"); 684 return; 685 case BFD_MACH_O_REBASE_OPCODE_SET_TYPE_IMM: 686 printf ("set_type %s\n", 687 bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm)); 688 break; 689 case BFD_MACH_O_REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: 690 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 691 printf ("set segment: %u and offset: 0x%08x\n", 692 imm, (unsigned) leb); 693 i += leblen; 694 break; 695 case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_ULEB: 696 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 697 printf ("add addr uleb: 0x%08x\n", (unsigned) leb); 698 i += leblen; 699 break; 700 case BFD_MACH_O_REBASE_OPCODE_ADD_ADDR_IMM_SCALED: 701 printf ("add addr imm scaled: %u\n", imm * ptrsize); 702 break; 703 case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_IMM_TIMES: 704 printf ("rebase imm times: %u\n", imm); 705 break; 706 case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES: 707 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 708 printf ("rebase uleb times: %u\n", (unsigned) leb); 709 i += leblen; 710 break; 711 case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB: 712 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 713 printf ("rebase add addr uleb: %u\n", (unsigned) leb); 714 i += leblen; 715 break; 716 case BFD_MACH_O_REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB: 717 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 718 printf ("rebase uleb times (%u)", (unsigned) leb); 719 i += leblen; 720 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 721 printf (" skipping uleb (%u)\n", (unsigned) leb); 722 i += leblen; 723 break; 724 default: 725 printf ("unknown\n"); 726 return; 727 } 728 } 729 printf (" rebase commands without end!\n"); 730 } 731 732 static void 733 dump_dyld_info_bind (bfd *abfd, unsigned char *buf, unsigned int len, 734 ufile_ptr off ATTRIBUTE_UNUSED) 735 { 736 unsigned int i; 737 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 738 unsigned int ptrsize = mdata->header.version == 2 ? 8 : 4; 739 740 for (i = 0; i < len; ) 741 { 742 unsigned char b = buf[i++]; 743 unsigned char imm = b & BFD_MACH_O_BIND_IMMEDIATE_MASK; 744 bfd_vma leb; 745 unsigned int leblen; 746 747 printf (" [0x%04x] 0x%02x: ", i, b); 748 switch (b & BFD_MACH_O_BIND_OPCODE_MASK) 749 { 750 case BFD_MACH_O_BIND_OPCODE_DONE: 751 printf ("done\n"); 752 return; 753 case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_IMM: 754 printf ("set dylib ordinal imm: %u\n", imm); 755 break; 756 case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB: 757 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 758 printf ("set dylib ordinal uleb: %u\n", imm); 759 i += leblen; 760 break; 761 case BFD_MACH_O_BIND_OPCODE_SET_DYLIB_SPECIAL_IMM: 762 imm = (imm != 0) ? imm | BFD_MACH_O_BIND_OPCODE_MASK : imm; 763 printf ("set dylib special imm: %d\n", imm); 764 break; 765 case BFD_MACH_O_BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM: 766 printf ("set symbol trailing flags imm: 0x%02x, ", imm); 767 for (; i < len && buf[i] != 0; i++) 768 putchar (buf[i] >= ' ' && buf[i] < 0x7f ? buf[i] : '?'); 769 putchar ('\n'); 770 i++; 771 break; 772 case BFD_MACH_O_BIND_OPCODE_SET_TYPE_IMM: 773 /* Kludge: use the same table as rebase type. */ 774 printf ("set_type %s\n", 775 bfd_mach_o_get_name (bfd_mach_o_dyld_rebase_type_name, imm)); 776 break; 777 case BFD_MACH_O_BIND_OPCODE_SET_ADDEND_SLEB: 778 { 779 bfd_signed_vma svma; 780 svma = read_leb128 (buf + i, &leblen, 0, buf + len); 781 printf ("set addend sleb: 0x%08x\n", (unsigned) svma); 782 i += leblen; 783 } 784 break; 785 case BFD_MACH_O_BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB: 786 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 787 printf ("set segment: %u and offset: 0x%08x\n", 788 imm, (unsigned) leb); 789 i += leblen; 790 break; 791 case BFD_MACH_O_BIND_OPCODE_ADD_ADDR_ULEB: 792 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 793 printf ("add addr uleb: 0x%08x\n", (unsigned) leb); 794 i += leblen; 795 break; 796 case BFD_MACH_O_BIND_OPCODE_DO_BIND: 797 printf ("do bind\n"); 798 break; 799 case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB: 800 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 801 printf ("do bind add addr uleb: 0x%08x\n", (unsigned) leb); 802 i += leblen; 803 break; 804 case BFD_MACH_O_BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED: 805 printf ("do bind add addr imm scaled: %u\n", imm * ptrsize); 806 break; 807 case BFD_MACH_O_BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB: 808 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 809 printf ("do bind uleb times (%u)", (unsigned) leb); 810 i += leblen; 811 leb = read_leb128 (buf + i, &leblen, 0, buf + len); 812 printf (" skipping uleb (%u)\n", (unsigned) leb); 813 i += leblen; 814 break; 815 default: 816 printf ("unknown\n"); 817 return; 818 } 819 } 820 printf (" bind commands without end!\n"); 821 } 822 823 struct export_info_data 824 { 825 const unsigned char *name; 826 struct export_info_data *next; 827 }; 828 829 static void 830 dump_dyld_info_export_1 (bfd *abfd, unsigned char *buf, unsigned int len, 831 unsigned int off, struct export_info_data *parent, 832 struct export_info_data *base) 833 { 834 bfd_vma size; 835 unsigned int leblen; 836 unsigned int child_count; 837 unsigned int i; 838 839 size = read_leb128 (buf + off, &leblen, 0, buf + len); 840 off += leblen; 841 842 if (size != 0) 843 { 844 bfd_vma flags; 845 struct export_info_data *d; 846 847 flags = read_leb128 (buf + off, &leblen, 0, buf + len); 848 off += leblen; 849 850 fputs (" ", stdout); 851 switch (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_MASK) 852 { 853 case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_REGULAR: 854 putchar ('-'); 855 break; 856 case BFD_MACH_O_EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL: 857 putchar ('T'); 858 break; 859 default: 860 putchar ('?'); 861 break; 862 } 863 putchar ((flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION) ? 864 'W' : '-'); 865 866 if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_REEXPORT) 867 { 868 bfd_vma lib; 869 870 lib = read_leb128 (buf + off, &leblen, 0, buf + len); 871 off += leblen; 872 873 fputs (" [reexport] ", stdout); 874 for (d = base; d != NULL; d = d->next) 875 printf ("%s", d->name); 876 877 fputs (" (", stdout); 878 if (buf[off] != 0) 879 { 880 fputs ((const char *)buf + off, stdout); 881 putchar (' '); 882 off += strlen ((const char *)buf + off); 883 } 884 printf ("from dylib %u)\n", (unsigned) lib); 885 off++; 886 } 887 else 888 { 889 bfd_vma offset; 890 bfd_vma resolv = 0; 891 892 offset = read_leb128 (buf + off, &leblen, 0, buf + len); 893 off += leblen; 894 895 if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER) 896 { 897 resolv = read_leb128 (buf + off, &leblen, 0, buf + len); 898 off += leblen; 899 } 900 901 printf (" 0x%08x ", (unsigned) offset); 902 for (d = base; d != NULL; d = d->next) 903 printf ("%s", d->name); 904 if (flags & BFD_MACH_O_EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER) 905 printf (" [resolv: 0x%08x]", (unsigned) resolv); 906 printf ("\n"); 907 } 908 } 909 910 child_count = read_leb128 (buf + off, &leblen, 0, buf + len); 911 off += leblen; 912 913 for (i = 0; i < child_count; i++) 914 { 915 struct export_info_data sub_data; 916 bfd_vma sub_off; 917 918 sub_data.name = buf + off; 919 sub_data.next = NULL; 920 parent->next = &sub_data; 921 922 off += strlen ((const char *)buf + off) + 1; 923 924 sub_off = read_leb128 (buf + off, &leblen, 0, buf + len); 925 off += leblen; 926 927 dump_dyld_info_export_1 (abfd, buf, len, sub_off, &sub_data, base); 928 } 929 } 930 931 static void 932 dump_dyld_info_export (bfd *abfd, unsigned char *buf, unsigned int len, 933 ufile_ptr off ATTRIBUTE_UNUSED) 934 { 935 struct export_info_data data; 936 937 data.name = (const unsigned char *) ""; 938 data.next = NULL; 939 940 printf (" fl offset sym (Flags: Tls Weak)\n"); 941 dump_dyld_info_export_1 (abfd, buf, len, 0, &data, &data); 942 } 943 944 static void 945 dump_dyld_info (bfd *abfd, bfd_mach_o_load_command *cmd, 946 bfd_boolean verbose) 947 { 948 bfd_mach_o_dyld_info_command *dinfo = &cmd->command.dyld_info; 949 950 printf (" rebase: off: 0x%08x size: %-8u (endoff: 0x%08x)\n", 951 dinfo->rebase_off, dinfo->rebase_size, 952 dinfo->rebase_off + dinfo->rebase_size); 953 printf (" bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n", 954 dinfo->bind_off, dinfo->bind_size, 955 dinfo->bind_off + dinfo->bind_size); 956 printf (" weak bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n", 957 dinfo->weak_bind_off, dinfo->weak_bind_size, 958 dinfo->weak_bind_off + dinfo->weak_bind_size); 959 printf (" lazy bind: off: 0x%08x size: %-8u (endoff: 0x%08x)\n", 960 dinfo->lazy_bind_off, dinfo->lazy_bind_size, 961 dinfo->lazy_bind_off + dinfo->lazy_bind_size); 962 printf (" export: off: 0x%08x size: %-8u (endoff: 0x%08x)\n", 963 dinfo->export_off, dinfo->export_size, 964 dinfo->export_off + dinfo->export_size); 965 966 if (!verbose) 967 return; 968 969 printf (" rebase:\n"); 970 if (!load_and_dump (abfd, dinfo->rebase_off, dinfo->rebase_size, 971 dump_dyld_info_rebase)) 972 non_fatal (_("cannot read rebase dyld info")); 973 974 printf (" bind:\n"); 975 if (!load_and_dump (abfd, dinfo->bind_off, dinfo->bind_size, 976 dump_dyld_info_bind)) 977 non_fatal (_("cannot read bind dyld info")); 978 979 printf (" weak bind:\n"); 980 if (!load_and_dump (abfd, dinfo->weak_bind_off, dinfo->weak_bind_size, 981 dump_dyld_info_bind)) 982 non_fatal (_("cannot read weak bind dyld info")); 983 984 printf (" lazy bind:\n"); 985 if (!load_and_dump (abfd, dinfo->lazy_bind_off, dinfo->lazy_bind_size, 986 dump_dyld_info_bind)) 987 non_fatal (_("cannot read lazy bind dyld info")); 988 989 printf (" exported symbols:\n"); 990 if (!load_and_dump (abfd, dinfo->export_off, dinfo->export_size, 991 dump_dyld_info_export)) 992 non_fatal (_("cannot read export symbols dyld info")); 993 } 994 995 static void 996 dump_thread (bfd *abfd, bfd_mach_o_load_command *cmd) 997 { 998 bfd_mach_o_thread_command *thread = &cmd->command.thread; 999 unsigned int j; 1000 bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd); 1001 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 1002 1003 printf (" nflavours: %lu\n", thread->nflavours); 1004 for (j = 0; j < thread->nflavours; j++) 1005 { 1006 bfd_mach_o_thread_flavour *flavour = &thread->flavours[j]; 1007 const bfd_mach_o_xlat_name *name_table; 1008 1009 printf (" %2u: flavour: 0x%08lx", j, flavour->flavour); 1010 switch (mdata->header.cputype) 1011 { 1012 case BFD_MACH_O_CPU_TYPE_I386: 1013 case BFD_MACH_O_CPU_TYPE_X86_64: 1014 name_table = bfd_mach_o_thread_x86_name; 1015 break; 1016 default: 1017 name_table = NULL; 1018 break; 1019 } 1020 if (name_table != NULL) 1021 printf (": %s", bfd_mach_o_get_name (name_table, flavour->flavour)); 1022 putchar ('\n'); 1023 1024 printf (" offset: 0x%08lx size: 0x%08lx\n", 1025 flavour->offset, flavour->size); 1026 if (bed->_bfd_mach_o_print_thread) 1027 { 1028 char *buf = xmalloc (flavour->size); 1029 1030 if (bfd_seek (abfd, flavour->offset, SEEK_SET) == 0 1031 && bfd_bread (buf, flavour->size, abfd) == flavour->size) 1032 (*bed->_bfd_mach_o_print_thread)(abfd, flavour, stdout, buf); 1033 1034 free (buf); 1035 } 1036 } 1037 } 1038 1039 static const bfd_mach_o_xlat_name bfd_mach_o_cs_magic[] = 1040 { 1041 { "embedded signature", BFD_MACH_O_CS_MAGIC_EMBEDDED_SIGNATURE }, 1042 { "requirement", BFD_MACH_O_CS_MAGIC_REQUIREMENT }, 1043 { "requirements", BFD_MACH_O_CS_MAGIC_REQUIREMENTS }, 1044 { "code directory", BFD_MACH_O_CS_MAGIC_CODEDIRECTORY }, 1045 { "embedded entitlements", BFD_MACH_O_CS_MAGIC_EMBEDDED_ENTITLEMENTS }, 1046 { "blob wrapper", BFD_MACH_O_CS_MAGIC_BLOB_WRAPPER }, 1047 { NULL, 0 } 1048 }; 1049 1050 static const bfd_mach_o_xlat_name bfd_mach_o_cs_hash_type[] = 1051 { 1052 { "no-hash", BFD_MACH_O_CS_NO_HASH }, 1053 { "sha1", BFD_MACH_O_CS_HASH_SHA1 }, 1054 { "sha256", BFD_MACH_O_CS_HASH_SHA256 }, 1055 { "skein 160", BFD_MACH_O_CS_HASH_PRESTANDARD_SKEIN_160x256 }, 1056 { "skein 256", BFD_MACH_O_CS_HASH_PRESTANDARD_SKEIN_256x512 }, 1057 { NULL, 0 } 1058 }; 1059 1060 static unsigned int 1061 dump_code_signature_blob (bfd *abfd, const unsigned char *buf, unsigned int len); 1062 1063 static void 1064 dump_code_signature_superblob (bfd *abfd ATTRIBUTE_UNUSED, 1065 const unsigned char *buf, unsigned int len) 1066 { 1067 unsigned int count; 1068 unsigned int i; 1069 1070 if (len < 12) 1071 { 1072 printf (_(" [bad block length]\n")); 1073 return; 1074 } 1075 count = bfd_getb32 (buf + 8); 1076 printf (ngettext (" %u index entry:\n", 1077 " %u index entries:\n", 1078 count), 1079 count); 1080 if (len < 12 + 8 * count) 1081 { 1082 printf (_(" [bad block length]\n")); 1083 return; 1084 } 1085 for (i = 0; i < count; i++) 1086 { 1087 unsigned int type; 1088 unsigned int off; 1089 1090 type = bfd_getb32 (buf + 12 + 8 * i); 1091 off = bfd_getb32 (buf + 12 + 8 * i + 4); 1092 printf (_(" index entry %u: type: %08x, offset: %08x\n"), 1093 i, type, off); 1094 1095 dump_code_signature_blob (abfd, buf + off, len - off); 1096 } 1097 } 1098 1099 static void 1100 swap_code_codedirectory_v1_in 1101 (const struct mach_o_codesign_codedirectory_external_v1 *src, 1102 struct mach_o_codesign_codedirectory_v1 *dst) 1103 { 1104 dst->version = bfd_getb32 (src->version); 1105 dst->flags = bfd_getb32 (src->flags); 1106 dst->hash_offset = bfd_getb32 (src->hash_offset); 1107 dst->ident_offset = bfd_getb32 (src->ident_offset); 1108 dst->nbr_special_slots = bfd_getb32 (src->nbr_special_slots); 1109 dst->nbr_code_slots = bfd_getb32 (src->nbr_code_slots); 1110 dst->code_limit = bfd_getb32 (src->code_limit); 1111 dst->hash_size = src->hash_size[0]; 1112 dst->hash_type = src->hash_type[0]; 1113 dst->spare1 = src->spare1[0]; 1114 dst->page_size = src->page_size[0]; 1115 dst->spare2 = bfd_getb32 (src->spare2); 1116 } 1117 1118 static void 1119 hexdump (unsigned int start, unsigned int len, 1120 const unsigned char *buf) 1121 { 1122 unsigned int i, j; 1123 1124 for (i = 0; i < len; i += 16) 1125 { 1126 printf ("%08x:", start + i); 1127 for (j = 0; j < 16; j++) 1128 { 1129 fputc (j == 8 ? '-' : ' ', stdout); 1130 if (i + j < len) 1131 printf ("%02x", buf[i + j]); 1132 else 1133 fputs (" ", stdout); 1134 } 1135 fputc (' ', stdout); 1136 for (j = 0; j < 16; j++) 1137 { 1138 if (i + j < len) 1139 fputc (ISPRINT (buf[i + j]) ? buf[i + j] : '.', stdout); 1140 else 1141 fputc (' ', stdout); 1142 } 1143 fputc ('\n', stdout); 1144 } 1145 } 1146 1147 static void 1148 dump_code_signature_codedirectory (bfd *abfd ATTRIBUTE_UNUSED, 1149 const unsigned char *buf, unsigned int len) 1150 { 1151 struct mach_o_codesign_codedirectory_v1 cd; 1152 const char *id; 1153 1154 if (len < sizeof (struct mach_o_codesign_codedirectory_external_v1)) 1155 { 1156 printf (_(" [bad block length]\n")); 1157 return; 1158 } 1159 1160 swap_code_codedirectory_v1_in 1161 ((const struct mach_o_codesign_codedirectory_external_v1 *) (buf + 8), &cd); 1162 1163 printf (_(" version: %08x\n"), cd.version); 1164 printf (_(" flags: %08x\n"), cd.flags); 1165 printf (_(" hash offset: %08x\n"), cd.hash_offset); 1166 id = (const char *) buf + cd.ident_offset; 1167 printf (_(" ident offset: %08x (- %08x)\n"), 1168 cd.ident_offset, cd.ident_offset + (unsigned) strlen (id) + 1); 1169 printf (_(" identity: %s\n"), id); 1170 printf (_(" nbr special slots: %08x (at offset %08x)\n"), 1171 cd.nbr_special_slots, 1172 cd.hash_offset - cd.nbr_special_slots * cd.hash_size); 1173 printf (_(" nbr code slots: %08x\n"), cd.nbr_code_slots); 1174 printf (_(" code limit: %08x\n"), cd.code_limit); 1175 printf (_(" hash size: %02x\n"), cd.hash_size); 1176 printf (_(" hash type: %02x (%s)\n"), 1177 cd.hash_type, 1178 bfd_mach_o_get_name (bfd_mach_o_cs_hash_type, cd.hash_type)); 1179 printf (_(" spare1: %02x\n"), cd.spare1); 1180 printf (_(" page size: %02x\n"), cd.page_size); 1181 printf (_(" spare2: %08x\n"), cd.spare2); 1182 if (cd.version >= 0x20100) 1183 printf (_(" scatter offset: %08x\n"), 1184 (unsigned) bfd_getb32 (buf + 44)); 1185 } 1186 1187 static unsigned int 1188 dump_code_signature_blob (bfd *abfd, const unsigned char *buf, unsigned int len) 1189 { 1190 unsigned int magic; 1191 unsigned int length; 1192 1193 if (len < 8) 1194 { 1195 printf (_(" [truncated block]\n")); 1196 return 0; 1197 } 1198 magic = bfd_getb32 (buf); 1199 length = bfd_getb32 (buf + 4); 1200 if (magic == 0 || length == 0) 1201 return 0; 1202 1203 printf (_(" magic : %08x (%s)\n"), magic, 1204 bfd_mach_o_get_name (bfd_mach_o_cs_magic, magic)); 1205 printf (_(" length: %08x\n"), length); 1206 if (length > len) 1207 { 1208 printf (_(" [bad block length]\n")); 1209 return 0; 1210 } 1211 1212 switch (magic) 1213 { 1214 case BFD_MACH_O_CS_MAGIC_EMBEDDED_SIGNATURE: 1215 dump_code_signature_superblob (abfd, buf, length); 1216 break; 1217 case BFD_MACH_O_CS_MAGIC_CODEDIRECTORY: 1218 dump_code_signature_codedirectory (abfd, buf, length); 1219 break; 1220 default: 1221 hexdump (0, length - 8, buf + 8); 1222 break; 1223 } 1224 return length; 1225 } 1226 1227 static void 1228 dump_code_signature (bfd *abfd, bfd_mach_o_linkedit_command *cmd) 1229 { 1230 unsigned char *buf = xmalloc (cmd->datasize); 1231 unsigned int off; 1232 1233 if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 1234 || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) 1235 { 1236 non_fatal (_("cannot read code signature data")); 1237 free (buf); 1238 return; 1239 } 1240 for (off = 0; off < cmd->datasize;) 1241 { 1242 unsigned int len; 1243 1244 len = dump_code_signature_blob (abfd, buf + off, cmd->datasize - off); 1245 1246 if (len == 0) 1247 break; 1248 off += len; 1249 } 1250 free (buf); 1251 } 1252 1253 static void 1254 dump_segment_split_info (bfd *abfd, bfd_mach_o_linkedit_command *cmd) 1255 { 1256 unsigned char *buf = xmalloc (cmd->datasize); 1257 unsigned char *p; 1258 unsigned int len; 1259 bfd_vma addr = 0; 1260 1261 if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 1262 || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) 1263 { 1264 non_fatal (_("cannot read segment split info")); 1265 free (buf); 1266 return; 1267 } 1268 if (buf[cmd->datasize - 1] != 0) 1269 { 1270 non_fatal (_("segment split info is not nul terminated")); 1271 free (buf); 1272 return; 1273 } 1274 1275 switch (buf[0]) 1276 { 1277 case 0: 1278 printf (_(" 32 bit pointers:\n")); 1279 break; 1280 case 1: 1281 printf (_(" 64 bit pointers:\n")); 1282 break; 1283 case 2: 1284 printf (_(" PPC hi-16:\n")); 1285 break; 1286 default: 1287 printf (_(" Unhandled location type %u\n"), buf[0]); 1288 break; 1289 } 1290 for (p = buf + 1; *p != 0; p += len) 1291 { 1292 addr += read_leb128 (p, &len, 0, buf + cmd->datasize); 1293 fputs (" ", stdout); 1294 bfd_printf_vma (abfd, addr); 1295 putchar ('\n'); 1296 } 1297 free (buf); 1298 } 1299 1300 static void 1301 dump_function_starts (bfd *abfd, bfd_mach_o_linkedit_command *cmd) 1302 { 1303 unsigned char *buf = xmalloc (cmd->datasize); 1304 unsigned char *end_buf = buf + cmd->datasize; 1305 unsigned char *p; 1306 bfd_vma addr; 1307 1308 if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 1309 || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) 1310 { 1311 non_fatal (_("cannot read function starts")); 1312 free (buf); 1313 return; 1314 } 1315 1316 /* Function starts are delta encoded, starting from the base address. */ 1317 addr = bfd_mach_o_get_base_address (abfd); 1318 1319 for (p = buf; ;) 1320 { 1321 bfd_vma delta = 0; 1322 unsigned int shift = 0; 1323 1324 if (*p == 0 || p == end_buf) 1325 break; 1326 while (1) 1327 { 1328 unsigned char b = *p++; 1329 1330 delta |= (b & 0x7f) << shift; 1331 if ((b & 0x80) == 0) 1332 break; 1333 if (p == end_buf) 1334 { 1335 fputs (" [truncated]\n", stdout); 1336 break; 1337 } 1338 shift += 7; 1339 } 1340 1341 addr += delta; 1342 fputs (" ", stdout); 1343 bfd_printf_vma (abfd, addr); 1344 putchar ('\n'); 1345 } 1346 free (buf); 1347 } 1348 1349 static const bfd_mach_o_xlat_name data_in_code_kind_name[] = 1350 { 1351 { "data", BFD_MACH_O_DICE_KIND_DATA }, 1352 { "1 byte jump table", BFD_MACH_O_DICE_JUMP_TABLES8 }, 1353 { "2 bytes jump table", BFD_MACH_O_DICE_JUMP_TABLES16 }, 1354 { "4 bytes jump table", BFD_MACH_O_DICE_JUMP_TABLES32 }, 1355 { "4 bytes abs jump table", BFD_MACH_O_DICE_ABS_JUMP_TABLES32 }, 1356 { NULL, 0 } 1357 }; 1358 1359 static void 1360 dump_data_in_code (bfd *abfd, bfd_mach_o_linkedit_command *cmd) 1361 { 1362 unsigned char *buf; 1363 unsigned char *p; 1364 1365 if (cmd->datasize == 0) 1366 { 1367 printf (" no data_in_code entries\n"); 1368 return; 1369 } 1370 1371 buf = xmalloc (cmd->datasize); 1372 if (bfd_seek (abfd, cmd->dataoff, SEEK_SET) != 0 1373 || bfd_bread (buf, cmd->datasize, abfd) != cmd->datasize) 1374 { 1375 non_fatal (_("cannot read data_in_code")); 1376 free (buf); 1377 return; 1378 } 1379 1380 printf (" offset length kind\n"); 1381 for (p = buf; p < buf + cmd->datasize; ) 1382 { 1383 struct mach_o_data_in_code_entry_external *dice; 1384 unsigned int offset; 1385 unsigned int length; 1386 unsigned int kind; 1387 1388 dice = (struct mach_o_data_in_code_entry_external *) p; 1389 1390 offset = bfd_get_32 (abfd, dice->offset); 1391 length = bfd_get_16 (abfd, dice->length); 1392 kind = bfd_get_16 (abfd, dice->kind); 1393 1394 printf (" 0x%08x 0x%04x 0x%04x %s\n", offset, length, kind, 1395 bfd_mach_o_get_name (data_in_code_kind_name, kind)); 1396 1397 p += sizeof (*dice); 1398 } 1399 free (buf); 1400 } 1401 1402 static void 1403 dump_twolevel_hints (bfd *abfd, bfd_mach_o_twolevel_hints_command *cmd) 1404 { 1405 size_t sz = 4 * cmd->nhints; 1406 unsigned char *buf; 1407 unsigned char *p; 1408 1409 buf = xmalloc (sz); 1410 if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0 1411 || bfd_bread (buf, sz, abfd) != sz) 1412 { 1413 non_fatal (_("cannot read twolevel hints")); 1414 free (buf); 1415 return; 1416 } 1417 1418 for (p = buf; p < buf + sz; p += 4) 1419 { 1420 unsigned int v; 1421 unsigned int isub_image; 1422 unsigned int itoc; 1423 1424 v = bfd_get_32 (abfd, p); 1425 if (bfd_big_endian (abfd)) 1426 { 1427 isub_image = (v >> 24) & 0xff; 1428 itoc = v & 0xffffff; 1429 } 1430 else 1431 { 1432 isub_image = v & 0xff; 1433 itoc = (v >> 8) & 0xffffff; 1434 } 1435 1436 printf (" %3u %8u\n", isub_image, itoc); 1437 } 1438 free (buf); 1439 } 1440 1441 static void 1442 dump_load_command (bfd *abfd, bfd_mach_o_load_command *cmd, 1443 unsigned int idx, bfd_boolean verbose) 1444 { 1445 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 1446 const char *cmd_name; 1447 1448 cmd_name = bfd_mach_o_get_name_or_null 1449 (bfd_mach_o_load_command_name, cmd->type); 1450 printf ("Load command #%-2u (size: %3u, offset: %4u): ", 1451 idx, cmd->len, cmd->offset); 1452 if (cmd_name == NULL) 1453 printf ("0x%02x\n", cmd->type); 1454 else 1455 printf ("%s\n", cmd_name); 1456 1457 switch (cmd->type) 1458 { 1459 case BFD_MACH_O_LC_SEGMENT: 1460 case BFD_MACH_O_LC_SEGMENT_64: 1461 dump_segment (abfd, cmd); 1462 break; 1463 case BFD_MACH_O_LC_UUID: 1464 { 1465 bfd_mach_o_uuid_command *uuid = &cmd->command.uuid; 1466 unsigned int j; 1467 1468 printf (" "); 1469 for (j = 0; j < sizeof (uuid->uuid); j ++) 1470 printf (" %02x", uuid->uuid[j]); 1471 putchar ('\n'); 1472 } 1473 break; 1474 case BFD_MACH_O_LC_LOAD_DYLIB: 1475 case BFD_MACH_O_LC_LAZY_LOAD_DYLIB: 1476 case BFD_MACH_O_LC_LOAD_WEAK_DYLIB: 1477 case BFD_MACH_O_LC_REEXPORT_DYLIB: 1478 case BFD_MACH_O_LC_ID_DYLIB: 1479 case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB: 1480 { 1481 bfd_mach_o_dylib_command *dylib = &cmd->command.dylib; 1482 printf (" name: %s\n", dylib->name_str); 1483 printf (" time stamp: 0x%08lx\n", 1484 dylib->timestamp); 1485 printf (" current version: 0x%08lx\n", 1486 dylib->current_version); 1487 printf (" comptibility version: 0x%08lx\n", 1488 dylib->compatibility_version); 1489 } 1490 break; 1491 case BFD_MACH_O_LC_LOAD_DYLINKER: 1492 case BFD_MACH_O_LC_ID_DYLINKER: 1493 printf (" %s\n", cmd->command.dylinker.name_str); 1494 break; 1495 case BFD_MACH_O_LC_DYLD_ENVIRONMENT: 1496 printf (" %s\n", cmd->command.dylinker.name_str); 1497 break; 1498 case BFD_MACH_O_LC_SYMTAB: 1499 { 1500 bfd_mach_o_symtab_command *symtab = &cmd->command.symtab; 1501 printf (" symoff: 0x%08x nsyms: %8u (endoff: 0x%08x)\n", 1502 symtab->symoff, symtab->nsyms, 1503 symtab->symoff + symtab->nsyms 1504 * (mdata->header.version == 2 1505 ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE)); 1506 printf (" stroff: 0x%08x strsize: %8u (endoff: 0x%08x)\n", 1507 symtab->stroff, symtab->strsize, 1508 symtab->stroff + symtab->strsize); 1509 break; 1510 } 1511 case BFD_MACH_O_LC_DYSYMTAB: 1512 dump_dysymtab (abfd, cmd, verbose); 1513 break; 1514 case BFD_MACH_O_LC_LOADFVMLIB: 1515 case BFD_MACH_O_LC_IDFVMLIB: 1516 { 1517 bfd_mach_o_fvmlib_command *fvmlib = &cmd->command.fvmlib; 1518 printf (" fvmlib: %s\n", fvmlib->name_str); 1519 printf (" minor version: 0x%08x\n", fvmlib->minor_version); 1520 printf (" header address: 0x%08x\n", fvmlib->header_addr); 1521 } 1522 break; 1523 case BFD_MACH_O_LC_CODE_SIGNATURE: 1524 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO: 1525 case BFD_MACH_O_LC_FUNCTION_STARTS: 1526 case BFD_MACH_O_LC_DATA_IN_CODE: 1527 case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS: 1528 { 1529 bfd_mach_o_linkedit_command *linkedit = &cmd->command.linkedit; 1530 printf 1531 (" dataoff: 0x%08lx datasize: 0x%08lx (endoff: 0x%08lx)\n", 1532 linkedit->dataoff, linkedit->datasize, 1533 linkedit->dataoff + linkedit->datasize); 1534 1535 if (verbose) 1536 switch (cmd->type) 1537 { 1538 case BFD_MACH_O_LC_CODE_SIGNATURE: 1539 dump_code_signature (abfd, linkedit); 1540 break; 1541 case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO: 1542 dump_segment_split_info (abfd, linkedit); 1543 break; 1544 case BFD_MACH_O_LC_FUNCTION_STARTS: 1545 dump_function_starts (abfd, linkedit); 1546 break; 1547 case BFD_MACH_O_LC_DATA_IN_CODE: 1548 dump_data_in_code (abfd, linkedit); 1549 break; 1550 default: 1551 break; 1552 } 1553 } 1554 break; 1555 case BFD_MACH_O_LC_SUB_FRAMEWORK: 1556 case BFD_MACH_O_LC_SUB_UMBRELLA: 1557 case BFD_MACH_O_LC_SUB_LIBRARY: 1558 case BFD_MACH_O_LC_SUB_CLIENT: 1559 case BFD_MACH_O_LC_RPATH: 1560 { 1561 bfd_mach_o_str_command *strc = &cmd->command.str; 1562 printf (" %s\n", strc->str); 1563 break; 1564 } 1565 case BFD_MACH_O_LC_THREAD: 1566 case BFD_MACH_O_LC_UNIXTHREAD: 1567 dump_thread (abfd, cmd); 1568 break; 1569 case BFD_MACH_O_LC_ENCRYPTION_INFO: 1570 { 1571 bfd_mach_o_encryption_info_command *cryp = 1572 &cmd->command.encryption_info; 1573 printf (" cryptoff: 0x%08x cryptsize: 0x%08x (endoff 0x%08x)" 1574 " cryptid: %u\n", 1575 cryp->cryptoff, cryp->cryptsize, 1576 cryp->cryptoff + cryp->cryptsize, 1577 cryp->cryptid); 1578 } 1579 break; 1580 case BFD_MACH_O_LC_DYLD_INFO: 1581 dump_dyld_info (abfd, cmd, verbose); 1582 break; 1583 case BFD_MACH_O_LC_VERSION_MIN_MACOSX: 1584 case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS: 1585 { 1586 bfd_mach_o_version_min_command *ver = &cmd->command.version_min; 1587 1588 printf (" %u.%u.%u\n", ver->rel, ver->maj, ver->min); 1589 } 1590 break; 1591 case BFD_MACH_O_LC_SOURCE_VERSION: 1592 { 1593 bfd_mach_o_source_version_command *version = 1594 &cmd->command.source_version; 1595 printf (" version a.b.c.d.e: %u.%u.%u.%u.%u\n", 1596 version->a, version->b, version->c, version->d, version->e); 1597 break; 1598 } 1599 case BFD_MACH_O_LC_PREBOUND_DYLIB: 1600 { 1601 bfd_mach_o_prebound_dylib_command *pbdy = &cmd->command.prebound_dylib; 1602 unsigned char *lm = pbdy->linked_modules; 1603 unsigned int j; 1604 unsigned int last; 1605 1606 printf (" dylib: %s\n", pbdy->name_str); 1607 printf (" nmodules: %u\n", pbdy->nmodules); 1608 printf (" linked modules (at %u): ", 1609 pbdy->linked_modules_offset - cmd->offset); 1610 last = pbdy->nmodules > 32 ? 32 : pbdy->nmodules; 1611 for (j = 0; j < last; j++) 1612 printf ("%u", (lm[j >> 3] >> (j & 7)) & 1); 1613 if (last < pbdy->nmodules) 1614 printf ("..."); 1615 putchar ('\n'); 1616 break; 1617 } 1618 case BFD_MACH_O_LC_PREBIND_CKSUM: 1619 { 1620 bfd_mach_o_prebind_cksum_command *cksum = &cmd->command.prebind_cksum; 1621 printf (" 0x%08x\n", cksum->cksum); 1622 break; 1623 } 1624 case BFD_MACH_O_LC_TWOLEVEL_HINTS: 1625 { 1626 bfd_mach_o_twolevel_hints_command *hints = 1627 &cmd->command.twolevel_hints; 1628 1629 printf (" table offset: 0x%08x nbr hints: %u\n", 1630 hints->offset, hints->nhints); 1631 if (verbose) 1632 dump_twolevel_hints (abfd, hints); 1633 break; 1634 } 1635 case BFD_MACH_O_LC_MAIN: 1636 { 1637 bfd_mach_o_main_command *entry = &cmd->command.main; 1638 printf (" entry offset: "); 1639 printf_uint64 (entry->entryoff); 1640 printf ("\n" 1641 " stack size: "); 1642 printf_uint64 (entry->stacksize); 1643 printf ("\n"); 1644 break; 1645 } 1646 default: 1647 break; 1648 } 1649 putchar ('\n'); 1650 } 1651 1652 static void 1653 dump_load_commands (bfd *abfd, unsigned int cmd32, unsigned int cmd64) 1654 { 1655 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 1656 bfd_mach_o_load_command *cmd; 1657 unsigned int i; 1658 1659 for (cmd = mdata->first_command, i = 0; cmd != NULL; cmd = cmd->next, i++) 1660 { 1661 if (cmd32 == 0) 1662 dump_load_command (abfd, cmd, i, FALSE); 1663 else if (cmd->type == cmd32 || cmd->type == cmd64) 1664 dump_load_command (abfd, cmd, i, TRUE); 1665 } 1666 } 1667 1668 static const char * const unwind_x86_64_regs[] = 1669 {"", "rbx", "r12", "r13", "r14", "r15", "rbp", "???" }; 1670 1671 static const char * const unwind_x86_regs[] = 1672 {"", "ebx", "ecx", "edx", "edi", "edi", "ebp", "???" }; 1673 1674 /* Dump x86 or x86-64 compact unwind encoding. Works for both architecture, 1675 as the encoding is the same (but not register names). */ 1676 1677 static void 1678 dump_unwind_encoding_x86 (unsigned int encoding, unsigned int sz, 1679 const char * const regs_name[]) 1680 { 1681 unsigned int mode; 1682 1683 mode = encoding & MACH_O_UNWIND_X86_64_MODE_MASK; 1684 switch (mode) 1685 { 1686 case MACH_O_UNWIND_X86_64_MODE_RBP_FRAME: 1687 { 1688 unsigned int regs; 1689 char pfx = sz == 8 ? 'R' : 'E'; 1690 1691 regs = encoding & MACH_O_UNWIND_X86_64_RBP_FRAME_REGISTERS; 1692 printf (" %cSP frame", pfx); 1693 if (regs != 0) 1694 { 1695 unsigned int offset; 1696 int i; 1697 1698 offset = (encoding & MACH_O_UNWIND_X86_64_RBP_FRAME_OFFSET) >> 16; 1699 printf (" at %cBP-%u:", pfx, offset * sz); 1700 for (i = 0; i < 5; i++) 1701 { 1702 unsigned int reg = (regs >> (i * 3)) & 0x7; 1703 if (reg != MACH_O_UNWIND_X86_64_REG_NONE) 1704 printf (" %s", regs_name[reg]); 1705 } 1706 } 1707 } 1708 break; 1709 case MACH_O_UNWIND_X86_64_MODE_STACK_IMMD: 1710 case MACH_O_UNWIND_X86_64_MODE_STACK_IND: 1711 { 1712 unsigned int stack_size; 1713 unsigned int reg_count; 1714 unsigned int reg_perm; 1715 unsigned int regs[6]; 1716 int i, j; 1717 1718 printf (" frameless"); 1719 stack_size = 1720 (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_STACK_SIZE) >> 16; 1721 reg_count = 1722 (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_REG_COUNT) >> 10; 1723 reg_perm = encoding & MACH_O_UNWIND_X86_64_FRAMELESS_REG_PERMUTATION; 1724 1725 if (mode == MACH_O_UNWIND_X86_64_MODE_STACK_IMMD) 1726 printf (" size: 0x%03x", stack_size * sz); 1727 else 1728 { 1729 unsigned int stack_adj; 1730 1731 stack_adj = 1732 (encoding & MACH_O_UNWIND_X86_64_FRAMELESS_STACK_ADJUST) >> 13; 1733 printf (" size at 0x%03x + 0x%02x", stack_size, stack_adj * sz); 1734 } 1735 /* Registers are coded using arithmetic compression: the register 1736 is indexed in range 0-6, the second in range 0-5, the third in 1737 range 0-4, etc. Already used registers are removed in next 1738 ranges. */ 1739 #define DO_PERM(R, NUM) R = reg_perm / NUM; reg_perm -= R * NUM 1740 switch (reg_count) 1741 { 1742 case 6: 1743 case 5: 1744 DO_PERM (regs[0], 120); 1745 DO_PERM (regs[1], 24); 1746 DO_PERM (regs[2], 6); 1747 DO_PERM (regs[3], 2); 1748 DO_PERM (regs[4], 1); 1749 regs[5] = 0; /* Not used if reg_count = 5. */ 1750 break; 1751 case 4: 1752 DO_PERM (regs[0], 60); 1753 DO_PERM (regs[1], 12); 1754 DO_PERM (regs[2], 3); 1755 DO_PERM (regs[3], 1); 1756 break; 1757 case 3: 1758 DO_PERM (regs[0], 20); 1759 DO_PERM (regs[1], 4); 1760 DO_PERM (regs[2], 1); 1761 break; 1762 case 2: 1763 DO_PERM (regs[0], 5); 1764 DO_PERM (regs[1], 1); 1765 break; 1766 case 1: 1767 DO_PERM (regs[0], 1); 1768 break; 1769 case 0: 1770 break; 1771 default: 1772 printf (" [bad reg count]"); 1773 return; 1774 } 1775 #undef DO_PERM 1776 /* Renumber. */ 1777 for (i = reg_count - 1; i >= 0; i--) 1778 { 1779 unsigned int inc = 1; 1780 for (j = 0; j < i; j++) 1781 if (regs[i] >= regs[j]) 1782 inc++; 1783 regs[i] += inc; 1784 } 1785 /* Display. */ 1786 for (i = 0; i < (int) reg_count; i++) 1787 printf (" %s", regs_name[regs[i]]); 1788 } 1789 break; 1790 case MACH_O_UNWIND_X86_64_MODE_DWARF: 1791 printf (" Dwarf offset: 0x%06x", 1792 encoding & MACH_O_UNWIND_X86_64_DWARF_SECTION_OFFSET); 1793 break; 1794 default: 1795 printf (" [unhandled mode]"); 1796 break; 1797 } 1798 } 1799 1800 /* Dump arm64 compact unwind entries. */ 1801 1802 static void 1803 dump_unwind_encoding_arm64 (unsigned int encoding) 1804 { 1805 switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK) 1806 { 1807 case MACH_O_UNWIND_ARM64_MODE_FRAMELESS: 1808 printf (" frameless"); 1809 break; 1810 case MACH_O_UNWIND_ARM64_MODE_DWARF: 1811 printf (" Dwarf offset: 0x%06x", 1812 encoding & MACH_O_UNWIND_ARM64_DWARF_SECTION_OFFSET); 1813 return; 1814 case MACH_O_UNWIND_ARM64_MODE_FRAME: 1815 printf (" frame"); 1816 break; 1817 default: 1818 printf (" [unhandled mode]"); 1819 return; 1820 } 1821 switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK) 1822 { 1823 case MACH_O_UNWIND_ARM64_MODE_FRAMELESS: 1824 case MACH_O_UNWIND_ARM64_MODE_FRAME: 1825 if (encoding & MACH_O_UNWIND_ARM64_FRAME_X19_X20_PAIR) 1826 printf (" x19-x20"); 1827 if (encoding & MACH_O_UNWIND_ARM64_FRAME_X21_X22_PAIR) 1828 printf (" x21-x22"); 1829 if (encoding & MACH_O_UNWIND_ARM64_FRAME_X23_X24_PAIR) 1830 printf (" x23-x24"); 1831 if (encoding & MACH_O_UNWIND_ARM64_FRAME_X25_X26_PAIR) 1832 printf (" x25-x26"); 1833 if (encoding & MACH_O_UNWIND_ARM64_FRAME_X27_X28_PAIR) 1834 printf (" x27-x28"); 1835 break; 1836 } 1837 switch (encoding & MACH_O_UNWIND_ARM64_MODE_MASK) 1838 { 1839 case MACH_O_UNWIND_ARM64_MODE_FRAME: 1840 if (encoding & MACH_O_UNWIND_ARM64_FRAME_D8_D9_PAIR) 1841 printf (" d8-d9"); 1842 if (encoding & MACH_O_UNWIND_ARM64_FRAME_D10_D11_PAIR) 1843 printf (" d10-d11"); 1844 if (encoding & MACH_O_UNWIND_ARM64_FRAME_D12_D13_PAIR) 1845 printf (" d12-d13"); 1846 if (encoding & MACH_O_UNWIND_ARM64_FRAME_D14_D15_PAIR) 1847 printf (" d14-d15"); 1848 break; 1849 case MACH_O_UNWIND_ARM64_MODE_FRAMELESS: 1850 printf (" size: %u", 1851 (encoding & MACH_O_UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK) >> 8); 1852 break; 1853 } 1854 } 1855 1856 static void 1857 dump_unwind_encoding (bfd_mach_o_data_struct *mdata, unsigned int encoding) 1858 { 1859 printf ("0x%08x", encoding); 1860 if (encoding == 0) 1861 return; 1862 1863 switch (mdata->header.cputype) 1864 { 1865 case BFD_MACH_O_CPU_TYPE_X86_64: 1866 dump_unwind_encoding_x86 (encoding, 8, unwind_x86_64_regs); 1867 break; 1868 case BFD_MACH_O_CPU_TYPE_I386: 1869 dump_unwind_encoding_x86 (encoding, 4, unwind_x86_regs); 1870 break; 1871 case BFD_MACH_O_CPU_TYPE_ARM64: 1872 dump_unwind_encoding_arm64 (encoding); 1873 break; 1874 default: 1875 printf (" [unhandled cpu]"); 1876 break; 1877 } 1878 if (encoding & MACH_O_UNWIND_HAS_LSDA) 1879 printf (" LSDA"); 1880 if (encoding & MACH_O_UNWIND_PERSONALITY_MASK) 1881 printf (" PERS(%u)", 1882 ((encoding & MACH_O_UNWIND_PERSONALITY_MASK) 1883 >> MACH_O_UNWIND_PERSONALITY_SHIFT)); 1884 } 1885 1886 static void 1887 dump_obj_compact_unwind (bfd *abfd, 1888 const unsigned char *content, bfd_size_type size) 1889 { 1890 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 1891 int is_64 = mdata->header.version == 2; 1892 const unsigned char *p; 1893 1894 printf ("Compact unwind info:\n"); 1895 printf (" start length personality lsda\n"); 1896 1897 if (is_64) 1898 { 1899 struct mach_o_compact_unwind_64 *e = 1900 (struct mach_o_compact_unwind_64 *) content; 1901 1902 for (p = content; p < content + size; p += sizeof (*e)) 1903 { 1904 e = (struct mach_o_compact_unwind_64 *) p; 1905 1906 putchar (' '); 1907 printf_uint64 (bfd_get_64 (abfd, e->start)); 1908 printf (" %08lx", bfd_get_32 (abfd, e->length)); 1909 putchar (' '); 1910 printf_uint64 (bfd_get_64 (abfd, e->personality)); 1911 putchar (' '); 1912 printf_uint64 (bfd_get_64 (abfd, e->lsda)); 1913 putchar ('\n'); 1914 1915 printf (" encoding: "); 1916 dump_unwind_encoding (mdata, bfd_get_32 (abfd, e->encoding)); 1917 putchar ('\n'); 1918 } 1919 } 1920 else 1921 { 1922 printf ("unhandled\n"); 1923 } 1924 } 1925 1926 static void 1927 dump_exe_compact_unwind (bfd *abfd, 1928 const unsigned char *content, bfd_size_type size) 1929 { 1930 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 1931 struct mach_o_unwind_info_header *hdr; 1932 unsigned int version; 1933 unsigned int encodings_offset; 1934 unsigned int encodings_count; 1935 unsigned int personality_offset; 1936 unsigned int personality_count; 1937 unsigned int index_offset; 1938 unsigned int index_count; 1939 struct mach_o_unwind_index_entry *index_entry; 1940 unsigned int i; 1941 1942 /* The header. */ 1943 printf ("Compact unwind info:\n"); 1944 1945 hdr = (struct mach_o_unwind_info_header *) content; 1946 if (size < sizeof (*hdr)) 1947 { 1948 printf (" truncated!\n"); 1949 return; 1950 } 1951 1952 version = bfd_get_32 (abfd, hdr->version); 1953 if (version != MACH_O_UNWIND_SECTION_VERSION) 1954 { 1955 printf (" unknown version: %u\n", version); 1956 return; 1957 } 1958 encodings_offset = bfd_get_32 (abfd, hdr->encodings_array_offset); 1959 encodings_count = bfd_get_32 (abfd, hdr->encodings_array_count); 1960 personality_offset = bfd_get_32 (abfd, hdr->personality_array_offset); 1961 personality_count = bfd_get_32 (abfd, hdr->personality_array_count); 1962 index_offset = bfd_get_32 (abfd, hdr->index_offset); 1963 index_count = bfd_get_32 (abfd, hdr->index_count); 1964 printf (" %u encodings, %u personalities, %u level-1 indexes:\n", 1965 encodings_count, personality_count, index_count); 1966 1967 /* Personality. */ 1968 if (personality_count > 0) 1969 { 1970 const unsigned char *pers = content + personality_offset; 1971 1972 printf (" personalities\n"); 1973 for (i = 0; i < personality_count; i++) 1974 printf (" %u: 0x%08x\n", i, 1975 (unsigned) bfd_get_32 (abfd, pers + 4 * i)); 1976 } 1977 1978 /* Level-1 index. */ 1979 printf (" idx function level2 off lsda off\n"); 1980 1981 index_entry = (struct mach_o_unwind_index_entry *) (content + index_offset); 1982 for (i = 0; i < index_count; i++) 1983 { 1984 unsigned int func_offset; 1985 unsigned int level2_offset; 1986 unsigned int lsda_offset; 1987 1988 func_offset = bfd_get_32 (abfd, index_entry->function_offset); 1989 level2_offset = bfd_get_32 (abfd, index_entry->second_level_offset); 1990 lsda_offset = bfd_get_32 (abfd, index_entry->lsda_index_offset); 1991 printf (" %3u 0x%08x 0x%08x 0x%08x\n", 1992 i, func_offset, level2_offset, lsda_offset); 1993 index_entry++; 1994 } 1995 1996 /* Level-1 index. */ 1997 index_entry = (struct mach_o_unwind_index_entry *) (content + index_offset); 1998 for (i = 0; i < index_count; i++) 1999 { 2000 unsigned int func_offset; 2001 unsigned int level2_offset; 2002 const unsigned char *level2; 2003 unsigned int kind; 2004 2005 func_offset = bfd_get_32 (abfd, index_entry->function_offset); 2006 level2_offset = bfd_get_32 (abfd, index_entry->second_level_offset); 2007 2008 /* No level-2 for this index (should be the last index). */ 2009 if (level2_offset == 0) 2010 continue; 2011 2012 level2 = content + level2_offset; 2013 kind = bfd_get_32 (abfd, level2); 2014 switch (kind) 2015 { 2016 case MACH_O_UNWIND_SECOND_LEVEL_COMPRESSED: 2017 { 2018 struct mach_o_unwind_compressed_second_level_page_header *l2; 2019 unsigned int entry_offset; 2020 unsigned int entry_count; 2021 unsigned int l2_encodings_offset; 2022 unsigned int l2_encodings_count; 2023 const unsigned char *en; 2024 unsigned int j; 2025 2026 l2 = (struct mach_o_unwind_compressed_second_level_page_header *) 2027 level2; 2028 entry_offset = bfd_get_16 (abfd, l2->entry_page_offset); 2029 entry_count = bfd_get_16 (abfd, l2->entry_count); 2030 l2_encodings_offset = bfd_get_16 (abfd, l2->encodings_offset); 2031 l2_encodings_count = bfd_get_16 (abfd, l2->encodings_count); 2032 2033 printf (" index %2u: compressed second level: " 2034 "%u entries, %u encodings (at 0x%08x)\n", 2035 i, entry_count, l2_encodings_count, l2_encodings_offset); 2036 printf (" # function eidx encoding\n"); 2037 2038 en = level2 + entry_offset; 2039 for (j = 0; j < entry_count; j++) 2040 { 2041 unsigned int entry; 2042 unsigned int en_func; 2043 unsigned int enc_idx; 2044 unsigned int encoding; 2045 const unsigned char *enc_addr; 2046 2047 entry = bfd_get_32 (abfd, en); 2048 en_func = 2049 MACH_O_UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET (entry); 2050 enc_idx = 2051 MACH_O_UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX (entry); 2052 if (enc_idx < encodings_count) 2053 enc_addr = content + encodings_offset 2054 + 4 * enc_idx; 2055 else 2056 enc_addr = level2 + l2_encodings_offset 2057 + 4 * (enc_idx - encodings_count); 2058 encoding = bfd_get_32 (abfd, enc_addr); 2059 2060 printf (" %4u 0x%08x [%3u] ", j, 2061 func_offset + en_func, enc_idx); 2062 dump_unwind_encoding (mdata, encoding); 2063 putchar ('\n'); 2064 2065 en += 4; 2066 } 2067 } 2068 break; 2069 2070 case MACH_O_UNWIND_SECOND_LEVEL_REGULAR: 2071 { 2072 struct mach_o_unwind_regular_second_level_page_header *l2; 2073 struct mach_o_unwind_regular_second_level_entry *en; 2074 unsigned int entry_offset; 2075 unsigned int entry_count; 2076 unsigned int j; 2077 2078 l2 = (struct mach_o_unwind_regular_second_level_page_header *) 2079 level2; 2080 2081 entry_offset = bfd_get_16 (abfd, l2->entry_page_offset); 2082 entry_count = bfd_get_16 (abfd, l2->entry_count); 2083 printf (" index %2u: regular level 2 at 0x%04x, %u entries\n", 2084 i, entry_offset, entry_count); 2085 printf (" # function encoding\n"); 2086 2087 en = (struct mach_o_unwind_regular_second_level_entry *) 2088 (level2 + entry_offset); 2089 for (j = 0; j < entry_count; j++) 2090 { 2091 unsigned int en_func; 2092 unsigned int encoding; 2093 2094 en_func = bfd_get_32 (abfd, en->function_offset); 2095 encoding = bfd_get_32 (abfd, en->encoding); 2096 printf (" %-4u 0x%08x ", j, en_func); 2097 dump_unwind_encoding (mdata, encoding); 2098 putchar ('\n'); 2099 en++; 2100 } 2101 } 2102 break; 2103 2104 default: 2105 printf (" index %2u: unhandled second level format (%u)\n", 2106 i, kind); 2107 break; 2108 } 2109 2110 { 2111 struct mach_o_unwind_lsda_index_entry *lsda; 2112 unsigned int lsda_offset; 2113 unsigned int next_lsda_offset; 2114 unsigned int nbr_lsda; 2115 unsigned int j; 2116 2117 lsda_offset = bfd_get_32 (abfd, index_entry->lsda_index_offset); 2118 next_lsda_offset = bfd_get_32 (abfd, index_entry[1].lsda_index_offset); 2119 lsda = (struct mach_o_unwind_lsda_index_entry *) 2120 (content + lsda_offset); 2121 nbr_lsda = (next_lsda_offset - lsda_offset) / sizeof (*lsda); 2122 for (j = 0; j < nbr_lsda; j++) 2123 { 2124 printf (" lsda %3u: function 0x%08x lsda 0x%08x\n", 2125 j, (unsigned int) bfd_get_32 (abfd, lsda->function_offset), 2126 (unsigned int) bfd_get_32 (abfd, lsda->lsda_offset)); 2127 lsda++; 2128 } 2129 } 2130 index_entry++; 2131 } 2132 } 2133 2134 static void 2135 dump_section_content (bfd *abfd, 2136 const char *segname, const char *sectname, 2137 void (*dump)(bfd*, const unsigned char*, bfd_size_type)) 2138 { 2139 bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd); 2140 bfd_mach_o_load_command *cmd; 2141 2142 for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next) 2143 { 2144 if (cmd->type == BFD_MACH_O_LC_SEGMENT 2145 || cmd->type == BFD_MACH_O_LC_SEGMENT_64) 2146 { 2147 bfd_mach_o_segment_command *seg = &cmd->command.segment; 2148 bfd_mach_o_section *sec; 2149 for (sec = seg->sect_head; sec != NULL; sec = sec->next) 2150 if (strcmp (sec->segname, segname) == 0 2151 && strcmp (sec->sectname, sectname) == 0) 2152 { 2153 bfd_size_type size; 2154 asection *bfdsec = sec->bfdsection; 2155 unsigned char *content; 2156 2157 size = bfd_get_section_size (bfdsec); 2158 content = (unsigned char *) xmalloc (size); 2159 bfd_get_section_contents (abfd, bfdsec, content, 0, size); 2160 2161 (*dump)(abfd, content, size); 2162 2163 free (content); 2164 } 2165 } 2166 } 2167 } 2168 2169 /* Dump ABFD (according to the options[] array). */ 2170 2171 static void 2172 mach_o_dump (bfd *abfd) 2173 { 2174 if (options[OPT_HEADER].selected) 2175 dump_header (abfd); 2176 if (options[OPT_SECTION].selected) 2177 dump_load_commands (abfd, BFD_MACH_O_LC_SEGMENT, BFD_MACH_O_LC_SEGMENT_64); 2178 if (options[OPT_MAP].selected) 2179 dump_section_map (abfd); 2180 if (options[OPT_LOAD].selected) 2181 dump_load_commands (abfd, 0, 0); 2182 if (options[OPT_DYSYMTAB].selected) 2183 dump_load_commands (abfd, BFD_MACH_O_LC_DYSYMTAB, 0); 2184 if (options[OPT_CODESIGN].selected) 2185 dump_load_commands (abfd, BFD_MACH_O_LC_CODE_SIGNATURE, 0); 2186 if (options[OPT_SEG_SPLIT_INFO].selected) 2187 dump_load_commands (abfd, BFD_MACH_O_LC_SEGMENT_SPLIT_INFO, 0); 2188 if (options[OPT_FUNCTION_STARTS].selected) 2189 dump_load_commands (abfd, BFD_MACH_O_LC_FUNCTION_STARTS, 0); 2190 if (options[OPT_DATA_IN_CODE].selected) 2191 dump_load_commands (abfd, BFD_MACH_O_LC_DATA_IN_CODE, 0); 2192 if (options[OPT_TWOLEVEL_HINTS].selected) 2193 dump_load_commands (abfd, BFD_MACH_O_LC_TWOLEVEL_HINTS, 0); 2194 if (options[OPT_COMPACT_UNWIND].selected) 2195 { 2196 dump_section_content (abfd, "__LD", "__compact_unwind", 2197 dump_obj_compact_unwind); 2198 dump_section_content (abfd, "__TEXT", "__unwind_info", 2199 dump_exe_compact_unwind); 2200 } 2201 if (options[OPT_DYLD_INFO].selected) 2202 dump_load_commands (abfd, BFD_MACH_O_LC_DYLD_INFO, 0); 2203 } 2204 2205 /* Vector for Mach-O. */ 2206 2207 const struct objdump_private_desc objdump_private_desc_mach_o = 2208 { 2209 mach_o_help, 2210 mach_o_filter, 2211 mach_o_dump, 2212 options 2213 }; 2214