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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 | /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- * * Copyright (c) 2016 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <TargetConditionals.h> #if !TARGET_OS_EXCLAVEKIT #include <System/sys/csr.h> // For csr_check() #include "dyld_introspection.h" #include "dyld_cache_format.h" #include "ProcessAtlas.h" #include "MachOLoaded.h" #include "DyldProcessConfig.h" #include "DyldAPIs.h" #include "FileManager.h" #define NO_ULEB #include "FileAbstraction.hpp" #include "MachOFileAbstraction.hpp" using lsl::Allocator; using lsl::UniquePtr; using dyld4::FileManager; using dyld4::Allocator; using dyld4::Atlas::SharedCache; using dyld4::Atlas::Image; using dyld4::Atlas::ProcessSnapshot; #if BUILDING_LIBDYLD using dyld4::Atlas::Process; #include "DyldLegacyInterfaceGlue.h" namespace dyld4 { extern class APIs* gAPIs; } using dyld4::gAPIs; #endif #if BUILDING_DYLD FileManager& defaultFileManager(); #else static FileManager& defaultFileManager() { static FileManager* sFileManager = nullptr; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ sFileManager = dyld4::MemoryManager::memoryManager().defaultAllocator().makeUnique<FileManager>(dyld4::MemoryManager::memoryManager().defaultAllocator(), nullptr).release(); }); return *sFileManager; } #endif /* !BUILDING_DYLD */ // This file is essentially glue to bind the public API/SPI to the internal object representations. // No significant implementation code should be present in this file #if BUILDING_LIBDYLD #include <libgen.h> extern int _NSGetExecutablePath(char* buf, uint32_t* bufsize); IntrospectionVtable* dyldFrameworkIntrospectionVtable() { static IntrospectionVtable* vtable = nullptr; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ bool useAtlas = true; char pathBuffer[4096]; uint32_t legnth = 4096; _NSGetExecutablePath(&pathBuffer[0], &legnth); const char* baseName = basename(pathBuffer); if (strcmp(baseName, "ReportCrash") == 0) { bool internalInstall = false; #if TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR uint32_t devFlags = *((uint32_t*)_COMM_PAGE_DEV_FIRM); if ((devFlags & 1) == 1) { internalInstall = true; } #elif TARGET_OS_OSX if (::csr_check(CSR_ALLOW_APPLE_INTERNAL) == 0) { internalInstall = true; } #endif // Get a value 0..<100 uint32_t randValue = arc4random_uniform(100); // Increase this up to 99 for all runs if (!internalInstall || (randValue > 20)) { useAtlas = false; } } if ((strcmp(baseName, "com.apple.dt.instruments.dtsecurity") == 0) || (strcmp(baseName, "DTServiceHub") == 0) || (strcmp(baseName, "trace") == 0) || (strcmp(baseName, "trace_internal") == 0) || (strcmp(baseName, "apple-hwtrace") == 0) || (strcmp(baseName, "Xcode") == 0)) { useAtlas = false; } #if !TARGET_OS_EXCLAVEKIT // Check boot-args after builtin overrides so they take precedence if (gAPIs->_dyld_commpage().disableAtlasUsage) { useAtlas = false; } // CHheck enablement secons so that if both disable and enable bits are set it defaults to enabled if (gAPIs->_dyld_commpage().enableAtlasUsage) { useAtlas = true; } #endif if (!useAtlas) { return; } // We want to use the atlas, so try to open up Dyld.framework void* handle = dlopen("/System/Library/PrivateFrameworks/Dyld.framework/Dyld", RTLD_LOCAL); #if TARGET_OS_OSX // One OS X with versioned paths if the library is not n the cache the symlink will be in // base system and the dylib will be in the cryptex which will result in the above dlopen() // failing. Once this gets through a single build and is in the cache that will be never be an issue //FIXME: We can remove this after the first submission, once the paths have been added if (!handle) { handle = dlopen("/System/Library/PrivateFrameworks/Dyld.framework/Versions/A/Dyld", RTLD_LOCAL); } #endif vtable = (IntrospectionVtable*)dlsym(handle, "_dyld_legacy_introspection_vtable"); }); return vtable; } #pragma mark - #pragma mark Process dyld_process_t dyld_process_create_for_task(task_t task, kern_return_t *kr) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_create_for_task(task, kr); } return (dyld_process_t)dyld4::MemoryManager::memoryManager().defaultAllocator().makeUnique<Process>(dyld4::MemoryManager::memoryManager().defaultAllocator(), defaultFileManager(), task, kr).release(); } dyld_process_t dyld_process_create_for_current_task() { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_create_for_current_task(); } return dyld_process_create_for_task(mach_task_self(), nullptr); } void dyld_process_dispose(dyld_process_t process) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_dispose(process); } UniquePtr<Process> temp((Process*)process); } uint32_t dyld_process_register_for_image_notifications(dyld_process_t process, kern_return_t *kr, dispatch_queue_t queue, void (^block)(dyld_image_t image, bool load)) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_register_for_image_notifications(process, kr, queue, block); } kern_return_t krSink = KERN_SUCCESS; if (kr == nullptr) { kr = &krSink; } return ((dyld4::Atlas::Process*)process)->registerAtlasChangedEventHandler(kr, queue, (void (^)(dyld4::Atlas::Image*, bool))block); } uint32_t dyld_process_register_for_event_notification(dyld_process_t process, kern_return_t *kr, uint32_t event, dispatch_queue_t queue, void (^block)()) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_register_for_event_notification(process, kr, event, queue, block); } kern_return_t krSink = KERN_SUCCESS; if (kr == nullptr) { kr = &krSink; } return ((dyld4::Atlas::Process*)process)->registerEventHandler(kr, event, queue, block); } void dyld_process_unregister_for_notification(dyld_process_t process, uint32_t handle) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_unregister_for_notification(process, handle); } ((dyld4::Atlas::Process*)process)->unregisterEventHandler(handle); } #pragma mark - #pragma mark Process Snaphsot dyld_process_snapshot_t dyld_process_snapshot_create_for_process(dyld_process_t process, kern_return_t *kr) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_snapshot_create_for_process(process, kr); } return (dyld_process_snapshot_t)((Process*)process)->getSnapshot(kr).release(); } dyld_process_snapshot_t dyld_process_snapshot_create_from_data(void* buffer, size_t size, void* reserved1, size_t reserved2) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_snapshot_create_from_data(buffer, size, reserved1, reserved2); } // Make sure no one uses the reserved parameters assert(reserved1 == nullptr); assert(reserved2 == 0); STACK_ALLOCATOR(ephemeralAllocator, 0); auto bytes = std::span((std::byte*)buffer, size); return (dyld_process_snapshot_t)dyld4::MemoryManager::memoryManager().defaultAllocator() .makeUnique<ProcessSnapshot>(ephemeralAllocator, defaultFileManager(), false, bytes).release(); } void dyld_process_snapshot_dispose(dyld_process_snapshot_t snapshot) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_snapshot_dispose(snapshot); } ProcessSnapshot* processSnapshot = (ProcessSnapshot*)snapshot; if ( !processSnapshot->valid() ) return; UniquePtr<ProcessSnapshot> temp(processSnapshot); } void dyld_process_snapshot_for_each_image(dyld_process_snapshot_t snapshot, void (^block)(dyld_image_t image)) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_snapshot_for_each_image(snapshot, block); } ProcessSnapshot* processSnapshot = (ProcessSnapshot*)snapshot; if ( !processSnapshot->valid() ) return; processSnapshot->forEachImage(^(Image* image) { block((dyld_image_t)image); }); } dyld_shared_cache_t dyld_process_snapshot_get_shared_cache(dyld_process_snapshot_t snapshot) { if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_process_snapshot_get_shared_cache(snapshot); } ProcessSnapshot* processSnapshot = (ProcessSnapshot*)snapshot; if ( !processSnapshot->valid() ) return nullptr; return processSnapshot->sharedCache().withUnsafe([](auto cachePtr) { return (dyld_shared_cache_t)cachePtr; }); } #endif /* BUILDING_LIBDYLD */ #pragma mark - #pragma mark SharedCache bool dyld_shared_cache_pin_mapping(dyld_shared_cache_t cache) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_pin_mapping(cache); } #endif /* BUILDING_LIBDYLD */ return ((dyld4::Atlas::SharedCache*)cache)->pin(); } void dyld_shared_cache_unpin_mapping(dyld_shared_cache_t cache) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_unpin_mapping(cache); } #endif /* BUILDING_LIBDYLD */ ((dyld4::Atlas::SharedCache*)cache)->unpin(); } uint64_t dyld_shared_cache_get_base_address(dyld_shared_cache_t cache_atlas) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_get_base_address(cache_atlas); } #endif /* BUILDING_LIBDYLD */ auto cache = (dyld4::Atlas::SharedCache*)cache_atlas; return (uint64_t)cache->rebasedAddress(); } uint64_t dyld_shared_cache_get_mapped_size(dyld_shared_cache_t cache_atlas) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_get_mapped_size(cache_atlas); } #endif /* BUILDING_LIBDYLD */ auto cache = (dyld4::Atlas::SharedCache*)cache_atlas; return cache->size(); } bool dyld_shared_cache_is_mapped_private(dyld_shared_cache_t cache_atlas) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_is_mapped_private(cache_atlas); } #endif /* BUILDING_LIBDYLD */ auto cache = (dyld4::Atlas::SharedCache*)cache_atlas; return cache->isPrivateMapped(); } void dyld_shared_cache_copy_uuid(dyld_shared_cache_t cache_atlas, uuid_t *uuid) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_copy_uuid(cache_atlas, uuid); } #endif /* BUILDING_LIBDYLD */ auto cache = (dyld4::Atlas::SharedCache*)cache_atlas; memcpy((void*)&uuid[0], cache->uuid().begin(), 16); } void dyld_shared_cache_for_each_file(dyld_shared_cache_t cache_atlas, void (^block)(const char* file_path)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_for_each_file(cache_atlas, block); } #endif /* BUILDING_LIBDYLD */ auto cache = (dyld4::Atlas::SharedCache*)cache_atlas; cache->forEachFilePath(block); } void dyld_shared_cache_for_each_image(dyld_shared_cache_t cache, void (^block)(dyld_image_t image)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_for_each_image(cache, block); } #endif /* BUILDING_LIBDYLD */ ((dyld4::Atlas::SharedCache*)cache)->forEachImage(^(dyld4::Atlas::Image* image) { block((dyld_image_t)image); }); } void dyld_for_each_installed_shared_cache_with_system_path(const char* root_path, void (^block)(dyld_shared_cache_t atlas)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_for_each_installed_shared_cache_with_system_path(root_path, block); } #endif /* BUILDING_LIBDYLD */ STACK_ALLOCATOR(ephemeralAllocator, 0); dyld4::Atlas::SharedCache::forEachInstalledCacheWithSystemPath(ephemeralAllocator, defaultFileManager(), root_path, ^(dyld4::Atlas::SharedCache* cache){ block((dyld_shared_cache_t)cache); }); } void dyld_for_each_installed_shared_cache(void (^block)(dyld_shared_cache_t cache)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_for_each_installed_shared_cache(block); } #endif /* BUILDING_LIBDYLD */ STACK_ALLOCATOR(ephemeralAllocator, 0); dyld4::Atlas::SharedCache::forEachInstalledCacheWithSystemPath(ephemeralAllocator, defaultFileManager(), "/", ^(dyld4::Atlas::SharedCache* cache){ block((dyld_shared_cache_t)cache); }); } bool dyld_shared_cache_for_file(const char* filePath, void (^block)(dyld_shared_cache_t cache)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_shared_cache_for_file(filePath, block); } #endif /* BUILDING_LIBDYLD */ STACK_ALLOCATOR(ephemeralAllocator, 0); auto cacheFile = defaultFileManager().fileRecordForPath(ephemeralAllocator, filePath); auto cache = SharedCache::createForFileRecord(ephemeralAllocator, std::move(cacheFile)); if (cache) { cache.withUnsafe([&](auto cachePtr) { block((dyld_shared_cache_t)cachePtr); }); return true; } return false; } bool dyld_image_content_for_segment(dyld_image_t image, const char* segmentName, void (^contentReader)(const void* content, uint64_t vmAddr, uint64_t vmSize)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_content_for_segment(image, segmentName, contentReader); } #endif /* BUILDING_LIBDYLD */ return ((Image*)image)->contentForSegment(segmentName, contentReader); } bool dyld_image_content_for_section(dyld_image_t image, const char* segmentName, const char* sectionName, void (^contentReader)(const void* content, uint64_t vmAddr, uint64_t vmSize)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_content_for_section(image, segmentName, sectionName, contentReader); } #endif /* BUILDING_LIBDYLD */ return ((Image*)image)->contentForSection(segmentName, sectionName, contentReader); } bool dyld_image_copy_uuid(dyld_image_t image, uuid_t* uuid) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_copy_uuid(image, uuid); } #endif /* BUILDING_LIBDYLD */ using lsl::UUID; UUID imageUUID = ((dyld4::Atlas::Image*)image)->uuid(); if (imageUUID.empty()) { return false; } std::copy((uint8_t*)imageUUID.begin(), (uint8_t*)imageUUID.end(), (uint8_t*)&uuid[0]); return true; } bool dyld_image_for_each_segment_info(dyld_image_t image, void (^block)(const char* segmentName, uint64_t vmAddr, uint64_t vmSize, int perm)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_for_each_segment_info(image, block); } #endif /* BUILDING_LIBDYLD */ // FIXME: Make a temporary null terminated buffer for the segment name return ((dyld4::Atlas::Image*)image)->forEachSegment(block); } bool dyld_image_for_each_section_info(dyld_image_t image, void (^block)(const char* segmentName, const char* sectionName, uint64_t vmAddr, uint64_t vmSize)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_for_each_section_info(image, block); } #endif /* BUILDING_LIBDYLD */ // FIXME: Make a temporary null terminated buffer for the segment and section names return ((dyld4::Atlas::Image*)image)->forEachSection(block); } const char* dyld_image_get_installname(dyld_image_t image) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_get_installname(image); } #endif /* BUILDING_LIBDYLD */ return ((dyld4::Atlas::Image*)image)->installname(); } #if !BUILDING_CACHE_BUILDER const char* dyld_image_get_file_path(dyld_image_t image) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_get_file_path(image); } #endif /* BUILDING_LIBDYLD */ return ((Image*)image)->filename(); } #endif // FIXME: These functions are part of DyldSharedCache.cpp and we should use that, but we can't until we factor out libdyld_introspection static const void* getLocalNlistEntries(const dyld_cache_local_symbols_info* localInfo) { return (uint8_t*)localInfo + localInfo->nlistOffset; } static const char* getLocalStrings(const dyld_cache_local_symbols_info* localInfo) { return (char*)localInfo + localInfo->stringsOffset; } static void forEachLocalSymbolEntry(const dyld_cache_local_symbols_info* localInfo, bool use64BitDylibOffsets, void (^handler)(uint64_t dylibCacheVMOffset, uint32_t nlistStartIndex, uint32_t nlistCount, bool& stop)) { if ( use64BitDylibOffsets ) { // On new caches, the dylibOffset is 64-bits, and is a VM offset const auto* localEntries = (dyld_cache_local_symbols_entry_64*)((uint8_t*)localInfo + localInfo->entriesOffset); bool stop = false; for (uint32_t i = 0; i < localInfo->entriesCount; i++) { const dyld_cache_local_symbols_entry_64& localEntry = localEntries[i]; handler(localEntry.dylibOffset, localEntry.nlistStartIndex, localEntry.nlistCount, stop); if ( stop ) break; } } else { // On old caches, the dylibOffset is 64-bits, and is a file offset // Note, as we are only looking for mach_header's, a file offset is a VM offset in this case const auto* localEntries = (dyld_cache_local_symbols_entry*)((uint8_t*)localInfo + localInfo->entriesOffset); bool stop = false; for (uint32_t i = 0; i < localInfo->entriesCount; i++) { const dyld_cache_local_symbols_entry& localEntry = localEntries[i]; handler(localEntry.dylibOffset, localEntry.nlistStartIndex, localEntry.nlistCount, stop); if ( stop ) break; } } } bool dyld_image_local_nlist_content_4Symbolication(dyld_image_t image, void (^contentReader)(const void* nListStart, uint64_t nListCount, const char* stringTable)) { #if BUILDING_LIBDYLD if ( const IntrospectionVtable* vtable = dyldFrameworkIntrospectionVtable() ) { return vtable->dyld_image_local_nlist_content_4Symbolication(image, contentReader); } #endif /* BUILDING_LIBDYLD */ Image* atlasImage = (dyld4::Atlas::Image*)image; const SharedCache* sharedCache = atlasImage->sharedCache(); if ( !sharedCache ) return false; __block bool result = true; if ( auto localsFileData = sharedCache->localSymbols() ) { uint64_t textOffsetInCache = atlasImage->sharedCacheVMOffset(); const dyld_cache_local_symbols_info* localInfo = localsFileData->localInfo(); forEachLocalSymbolEntry(localInfo, localsFileData->use64BitDylibOffsets(), ^(uint64_t dylibCacheVMOffset, uint32_t nlistStartIndex, uint32_t nlistCount, bool& stop){ if ( dylibCacheVMOffset == textOffsetInCache ) { if ( atlasImage->pointerSize() == 8 ) { typedef Pointer64<LittleEndian> P; const macho_nlist<P>* allLocalNlists = (macho_nlist<P>*)getLocalNlistEntries(localInfo); const macho_nlist<P>* dylibNListsStart = &allLocalNlists[nlistStartIndex]; contentReader(dylibNListsStart, nlistCount, getLocalStrings(localInfo)); } else if ( atlasImage->pointerSize() == 4 ) { typedef Pointer32<LittleEndian> P; const macho_nlist<P>* allLocalNlists = (macho_nlist<P>*)getLocalNlistEntries(localInfo); const macho_nlist<P>* dylibNListsStart = &allLocalNlists[nlistStartIndex]; contentReader(dylibNListsStart, nlistCount, getLocalStrings(localInfo)); } else { result = false; } stop = true; } }); return result; } return result; } #endif // !TARGET_OS_EXCLAVEKIT |