1 //===-- ObjectFile.cpp ------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Symbol/ObjectFile.h" 11 #include "Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.h" 12 #include "lldb/Core/Module.h" 13 #include "lldb/Core/ModuleSpec.h" 14 #include "lldb/Core/PluginManager.h" 15 #include "lldb/Core/Section.h" 16 #include "lldb/Symbol/ObjectContainer.h" 17 #include "lldb/Symbol/SymbolFile.h" 18 #include "lldb/Target/Process.h" 19 #include "lldb/Target/SectionLoadList.h" 20 #include "lldb/Target/Target.h" 21 #include "lldb/Utility/DataBuffer.h" 22 #include "lldb/Utility/DataBufferHeap.h" 23 #include "lldb/Utility/DataBufferLLVM.h" 24 #include "lldb/Utility/Log.h" 25 #include "lldb/Utility/RegularExpression.h" 26 #include "lldb/Utility/Timer.h" 27 #include "lldb/lldb-private.h" 28 29 using namespace lldb; 30 using namespace lldb_private; 31 32 ObjectFileSP 33 ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file, 34 lldb::offset_t file_offset, lldb::offset_t file_size, 35 DataBufferSP &data_sp, lldb::offset_t &data_offset) { 36 ObjectFileSP object_file_sp; 37 38 if (module_sp) { 39 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 40 Timer scoped_timer( 41 func_cat, 42 "ObjectFile::FindPlugin (module = %s, file = %p, file_offset = " 43 "0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")", 44 module_sp->GetFileSpec().GetPath().c_str(), 45 static_cast<const void *>(file), static_cast<uint64_t>(file_offset), 46 static_cast<uint64_t>(file_size)); 47 if (file) { 48 FileSpec archive_file; 49 ObjectContainerCreateInstance create_object_container_callback; 50 51 const bool file_exists = file->Exists(); 52 if (!data_sp) { 53 // We have an object name which most likely means we have 54 // a .o file in a static archive (.a file). Try and see if 55 // we have a cached archive first without reading any data 56 // first 57 if (file_exists && module_sp->GetObjectName()) { 58 for (uint32_t idx = 0; 59 (create_object_container_callback = 60 PluginManager::GetObjectContainerCreateCallbackAtIndex( 61 idx)) != nullptr; 62 ++idx) { 63 std::unique_ptr<ObjectContainer> object_container_ap( 64 create_object_container_callback(module_sp, data_sp, 65 data_offset, file, file_offset, 66 file_size)); 67 68 if (object_container_ap.get()) 69 object_file_sp = object_container_ap->GetObjectFile(file); 70 71 if (object_file_sp.get()) 72 return object_file_sp; 73 } 74 } 75 // Ok, we didn't find any containers that have a named object, now 76 // lets read the first 512 bytes from the file so the object file 77 // and object container plug-ins can use these bytes to see if they 78 // can parse this file. 79 if (file_size > 0) { 80 data_sp = 81 DataBufferLLVM::CreateSliceFromPath(file->GetPath(), 512, file_offset); 82 data_offset = 0; 83 } 84 } 85 86 if (!data_sp || data_sp->GetByteSize() == 0) { 87 // Check for archive file with format "/path/to/archive.a(object.o)" 88 char path_with_object[PATH_MAX * 2]; 89 module_sp->GetFileSpec().GetPath(path_with_object, 90 sizeof(path_with_object)); 91 92 ConstString archive_object; 93 const bool must_exist = true; 94 if (ObjectFile::SplitArchivePathWithObject( 95 path_with_object, archive_file, archive_object, must_exist)) { 96 file_size = archive_file.GetByteSize(); 97 if (file_size > 0) { 98 file = &archive_file; 99 module_sp->SetFileSpecAndObjectName(archive_file, archive_object); 100 // Check if this is a object container by iterating through all 101 // object 102 // container plugin instances and then trying to get an object file 103 // from the container plugins since we had a name. Also, don't read 104 // ANY data in case there is data cached in the container plug-ins 105 // (like BSD archives caching the contained objects within an file). 106 for (uint32_t idx = 0; 107 (create_object_container_callback = 108 PluginManager::GetObjectContainerCreateCallbackAtIndex( 109 idx)) != nullptr; 110 ++idx) { 111 std::unique_ptr<ObjectContainer> object_container_ap( 112 create_object_container_callback(module_sp, data_sp, 113 data_offset, file, 114 file_offset, file_size)); 115 116 if (object_container_ap.get()) 117 object_file_sp = object_container_ap->GetObjectFile(file); 118 119 if (object_file_sp.get()) 120 return object_file_sp; 121 } 122 // We failed to find any cached object files in the container 123 // plug-ins, so lets read the first 512 bytes and try again below... 124 data_sp = DataBufferLLVM::CreateSliceFromPath(archive_file.GetPath(), 125 512, file_offset); 126 } 127 } 128 } 129 130 if (data_sp && data_sp->GetByteSize() > 0) { 131 // Check if this is a normal object file by iterating through 132 // all object file plugin instances. 133 ObjectFileCreateInstance create_object_file_callback; 134 for (uint32_t idx = 0; 135 (create_object_file_callback = 136 PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != 137 nullptr; 138 ++idx) { 139 object_file_sp.reset(create_object_file_callback( 140 module_sp, data_sp, data_offset, file, file_offset, file_size)); 141 if (object_file_sp.get()) 142 return object_file_sp; 143 } 144 145 // Check if this is a object container by iterating through 146 // all object container plugin instances and then trying to get 147 // an object file from the container. 148 for (uint32_t idx = 0; 149 (create_object_container_callback = 150 PluginManager::GetObjectContainerCreateCallbackAtIndex( 151 idx)) != nullptr; 152 ++idx) { 153 std::unique_ptr<ObjectContainer> object_container_ap( 154 create_object_container_callback(module_sp, data_sp, data_offset, 155 file, file_offset, file_size)); 156 157 if (object_container_ap.get()) 158 object_file_sp = object_container_ap->GetObjectFile(file); 159 160 if (object_file_sp.get()) 161 return object_file_sp; 162 } 163 } 164 } 165 } 166 // We didn't find it, so clear our shared pointer in case it 167 // contains anything and return an empty shared pointer 168 object_file_sp.reset(); 169 return object_file_sp; 170 } 171 172 ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, 173 const ProcessSP &process_sp, 174 lldb::addr_t header_addr, 175 DataBufferSP &data_sp) { 176 ObjectFileSP object_file_sp; 177 178 if (module_sp) { 179 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 180 Timer scoped_timer(func_cat, 181 "ObjectFile::FindPlugin (module = " 182 "%s, process = %p, header_addr = " 183 "0x%" PRIx64 ")", 184 module_sp->GetFileSpec().GetPath().c_str(), 185 static_cast<void *>(process_sp.get()), header_addr); 186 uint32_t idx; 187 188 // Check if this is a normal object file by iterating through 189 // all object file plugin instances. 190 ObjectFileCreateMemoryInstance create_callback; 191 for (idx = 0; 192 (create_callback = 193 PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) != 194 nullptr; 195 ++idx) { 196 object_file_sp.reset( 197 create_callback(module_sp, data_sp, process_sp, header_addr)); 198 if (object_file_sp.get()) 199 return object_file_sp; 200 } 201 } 202 203 // We didn't find it, so clear our shared pointer in case it 204 // contains anything and return an empty shared pointer 205 object_file_sp.reset(); 206 return object_file_sp; 207 } 208 209 size_t ObjectFile::GetModuleSpecifications(const FileSpec &file, 210 lldb::offset_t file_offset, 211 lldb::offset_t file_size, 212 ModuleSpecList &specs) { 213 DataBufferSP data_sp = DataBufferLLVM::CreateSliceFromPath(file.GetPath(), 512, file_offset); 214 if (data_sp) { 215 if (file_size == 0) { 216 const lldb::offset_t actual_file_size = file.GetByteSize(); 217 if (actual_file_size > file_offset) 218 file_size = actual_file_size - file_offset; 219 } 220 return ObjectFile::GetModuleSpecifications(file, // file spec 221 data_sp, // data bytes 222 0, // data offset 223 file_offset, // file offset 224 file_size, // file length 225 specs); 226 } 227 return 0; 228 } 229 230 size_t ObjectFile::GetModuleSpecifications( 231 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 232 lldb::offset_t data_offset, lldb::offset_t file_offset, 233 lldb::offset_t file_size, lldb_private::ModuleSpecList &specs) { 234 const size_t initial_count = specs.GetSize(); 235 ObjectFileGetModuleSpecifications callback; 236 uint32_t i; 237 // Try the ObjectFile plug-ins 238 for (i = 0; 239 (callback = 240 PluginManager::GetObjectFileGetModuleSpecificationsCallbackAtIndex( 241 i)) != nullptr; 242 ++i) { 243 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 244 return specs.GetSize() - initial_count; 245 } 246 247 // Try the ObjectContainer plug-ins 248 for (i = 0; 249 (callback = PluginManager:: 250 GetObjectContainerGetModuleSpecificationsCallbackAtIndex(i)) != 251 nullptr; 252 ++i) { 253 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 254 return specs.GetSize() - initial_count; 255 } 256 return 0; 257 } 258 259 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 260 const FileSpec *file_spec_ptr, 261 lldb::offset_t file_offset, lldb::offset_t length, 262 const lldb::DataBufferSP &data_sp, 263 lldb::offset_t data_offset) 264 : ModuleChild(module_sp), 265 m_file(), // This file could be different from the original module's file 266 m_type(eTypeInvalid), m_strata(eStrataInvalid), 267 m_file_offset(file_offset), m_length(length), m_data(), 268 m_unwind_table(*this), m_process_wp(), 269 m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_ap(), m_symtab_ap(), 270 m_synthetic_symbol_idx(0) { 271 if (file_spec_ptr) 272 m_file = *file_spec_ptr; 273 if (data_sp) 274 m_data.SetData(data_sp, data_offset, length); 275 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 276 if (log) 277 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), file = %s, " 278 "file_offset = 0x%8.8" PRIx64 ", size = %" PRIu64, 279 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 280 module_sp->GetSpecificationDescription().c_str(), 281 m_file ? m_file.GetPath().c_str() : "<NULL>", m_file_offset, 282 m_length); 283 } 284 285 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 286 const ProcessSP &process_sp, lldb::addr_t header_addr, 287 DataBufferSP &header_data_sp) 288 : ModuleChild(module_sp), m_file(), m_type(eTypeInvalid), 289 m_strata(eStrataInvalid), m_file_offset(0), m_length(0), m_data(), 290 m_unwind_table(*this), m_process_wp(process_sp), 291 m_memory_addr(header_addr), m_sections_ap(), m_symtab_ap(), 292 m_synthetic_symbol_idx(0) { 293 if (header_data_sp) 294 m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize()); 295 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 296 if (log) 297 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), process = %p, " 298 "header_addr = 0x%" PRIx64, 299 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 300 module_sp->GetSpecificationDescription().c_str(), 301 static_cast<void *>(process_sp.get()), m_memory_addr); 302 } 303 304 ObjectFile::~ObjectFile() { 305 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 306 if (log) 307 log->Printf("%p ObjectFile::~ObjectFile ()\n", static_cast<void *>(this)); 308 } 309 310 bool ObjectFile::SetModulesArchitecture(const ArchSpec &new_arch) { 311 ModuleSP module_sp(GetModule()); 312 if (module_sp) 313 return module_sp->SetArchitecture(new_arch); 314 return false; 315 } 316 317 AddressClass ObjectFile::GetAddressClass(addr_t file_addr) { 318 Symtab *symtab = GetSymtab(); 319 if (symtab) { 320 Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); 321 if (symbol) { 322 if (symbol->ValueIsAddress()) { 323 const SectionSP section_sp(symbol->GetAddressRef().GetSection()); 324 if (section_sp) { 325 const SectionType section_type = section_sp->GetType(); 326 switch (section_type) { 327 case eSectionTypeInvalid: 328 return eAddressClassUnknown; 329 case eSectionTypeCode: 330 return eAddressClassCode; 331 case eSectionTypeContainer: 332 return eAddressClassUnknown; 333 case eSectionTypeData: 334 case eSectionTypeDataCString: 335 case eSectionTypeDataCStringPointers: 336 case eSectionTypeDataSymbolAddress: 337 case eSectionTypeData4: 338 case eSectionTypeData8: 339 case eSectionTypeData16: 340 case eSectionTypeDataPointers: 341 case eSectionTypeZeroFill: 342 case eSectionTypeDataObjCMessageRefs: 343 case eSectionTypeDataObjCCFStrings: 344 case eSectionTypeGoSymtab: 345 return eAddressClassData; 346 case eSectionTypeDebug: 347 case eSectionTypeDWARFDebugAbbrev: 348 case eSectionTypeDWARFDebugAddr: 349 case eSectionTypeDWARFDebugAranges: 350 case eSectionTypeDWARFDebugCuIndex: 351 case eSectionTypeDWARFDebugFrame: 352 case eSectionTypeDWARFDebugInfo: 353 case eSectionTypeDWARFDebugLine: 354 case eSectionTypeDWARFDebugLoc: 355 case eSectionTypeDWARFDebugMacInfo: 356 case eSectionTypeDWARFDebugMacro: 357 case eSectionTypeDWARFDebugPubNames: 358 case eSectionTypeDWARFDebugPubTypes: 359 case eSectionTypeDWARFDebugRanges: 360 case eSectionTypeDWARFDebugStr: 361 case eSectionTypeDWARFDebugStrOffsets: 362 case eSectionTypeDWARFAppleNames: 363 case eSectionTypeDWARFAppleTypes: 364 case eSectionTypeDWARFAppleNamespaces: 365 case eSectionTypeDWARFAppleObjC: 366 return eAddressClassDebug; 367 case eSectionTypeEHFrame: 368 case eSectionTypeARMexidx: 369 case eSectionTypeARMextab: 370 case eSectionTypeCompactUnwind: 371 return eAddressClassRuntime; 372 case eSectionTypeELFSymbolTable: 373 case eSectionTypeELFDynamicSymbols: 374 case eSectionTypeELFRelocationEntries: 375 case eSectionTypeELFDynamicLinkInfo: 376 case eSectionTypeOther: 377 return eAddressClassUnknown; 378 case eSectionTypeAbsoluteAddress: 379 // In case of absolute sections decide the address class based on 380 // the symbol 381 // type because the section type isn't specify if it is a code or a 382 // data 383 // section. 384 break; 385 } 386 } 387 } 388 389 const SymbolType symbol_type = symbol->GetType(); 390 switch (symbol_type) { 391 case eSymbolTypeAny: 392 return eAddressClassUnknown; 393 case eSymbolTypeAbsolute: 394 return eAddressClassUnknown; 395 case eSymbolTypeCode: 396 return eAddressClassCode; 397 case eSymbolTypeTrampoline: 398 return eAddressClassCode; 399 case eSymbolTypeResolver: 400 return eAddressClassCode; 401 case eSymbolTypeData: 402 return eAddressClassData; 403 case eSymbolTypeRuntime: 404 return eAddressClassRuntime; 405 case eSymbolTypeException: 406 return eAddressClassRuntime; 407 case eSymbolTypeSourceFile: 408 return eAddressClassDebug; 409 case eSymbolTypeHeaderFile: 410 return eAddressClassDebug; 411 case eSymbolTypeObjectFile: 412 return eAddressClassDebug; 413 case eSymbolTypeCommonBlock: 414 return eAddressClassDebug; 415 case eSymbolTypeBlock: 416 return eAddressClassDebug; 417 case eSymbolTypeLocal: 418 return eAddressClassData; 419 case eSymbolTypeParam: 420 return eAddressClassData; 421 case eSymbolTypeVariable: 422 return eAddressClassData; 423 case eSymbolTypeVariableType: 424 return eAddressClassDebug; 425 case eSymbolTypeLineEntry: 426 return eAddressClassDebug; 427 case eSymbolTypeLineHeader: 428 return eAddressClassDebug; 429 case eSymbolTypeScopeBegin: 430 return eAddressClassDebug; 431 case eSymbolTypeScopeEnd: 432 return eAddressClassDebug; 433 case eSymbolTypeAdditional: 434 return eAddressClassUnknown; 435 case eSymbolTypeCompiler: 436 return eAddressClassDebug; 437 case eSymbolTypeInstrumentation: 438 return eAddressClassDebug; 439 case eSymbolTypeUndefined: 440 return eAddressClassUnknown; 441 case eSymbolTypeObjCClass: 442 return eAddressClassRuntime; 443 case eSymbolTypeObjCMetaClass: 444 return eAddressClassRuntime; 445 case eSymbolTypeObjCIVar: 446 return eAddressClassRuntime; 447 case eSymbolTypeReExported: 448 return eAddressClassRuntime; 449 } 450 } 451 } 452 return eAddressClassUnknown; 453 } 454 455 DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp, 456 lldb::addr_t addr, size_t byte_size) { 457 DataBufferSP data_sp; 458 if (process_sp) { 459 std::unique_ptr<DataBufferHeap> data_ap(new DataBufferHeap(byte_size, 0)); 460 Status error; 461 const size_t bytes_read = process_sp->ReadMemory( 462 addr, data_ap->GetBytes(), data_ap->GetByteSize(), error); 463 if (bytes_read == byte_size) 464 data_sp.reset(data_ap.release()); 465 } 466 return data_sp; 467 } 468 469 size_t ObjectFile::GetData(lldb::offset_t offset, size_t length, 470 DataExtractor &data) const { 471 // The entire file has already been mmap'ed into m_data, so just copy from 472 // there 473 // as the back mmap buffer will be shared with shared pointers. 474 return data.SetData(m_data, offset, length); 475 } 476 477 size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length, 478 void *dst) const { 479 // The entire file has already been mmap'ed into m_data, so just copy from 480 // there 481 // Note that the data remains in target byte order. 482 return m_data.CopyData(offset, length, dst); 483 } 484 485 size_t ObjectFile::ReadSectionData(Section *section, 486 lldb::offset_t section_offset, void *dst, 487 size_t dst_len) { 488 assert(section); 489 section_offset *= section->GetTargetByteSize(); 490 491 // If some other objectfile owns this data, pass this to them. 492 if (section->GetObjectFile() != this) 493 return section->GetObjectFile()->ReadSectionData(section, section_offset, 494 dst, dst_len); 495 496 if (IsInMemory()) { 497 ProcessSP process_sp(m_process_wp.lock()); 498 if (process_sp) { 499 Status error; 500 const addr_t base_load_addr = 501 section->GetLoadBaseAddress(&process_sp->GetTarget()); 502 if (base_load_addr != LLDB_INVALID_ADDRESS) 503 return process_sp->ReadMemory(base_load_addr + section_offset, dst, 504 dst_len, error); 505 } 506 } else { 507 if (!section->IsRelocated()) 508 RelocateSection(section); 509 510 const lldb::offset_t section_file_size = section->GetFileSize(); 511 if (section_offset < section_file_size) { 512 const size_t section_bytes_left = section_file_size - section_offset; 513 size_t section_dst_len = dst_len; 514 if (section_dst_len > section_bytes_left) 515 section_dst_len = section_bytes_left; 516 return CopyData(section->GetFileOffset() + section_offset, 517 section_dst_len, dst); 518 } else { 519 if (section->GetType() == eSectionTypeZeroFill) { 520 const uint64_t section_size = section->GetByteSize(); 521 const uint64_t section_bytes_left = section_size - section_offset; 522 uint64_t section_dst_len = dst_len; 523 if (section_dst_len > section_bytes_left) 524 section_dst_len = section_bytes_left; 525 memset(dst, 0, section_dst_len); 526 return section_dst_len; 527 } 528 } 529 } 530 return 0; 531 } 532 533 //---------------------------------------------------------------------- 534 // Get the section data the file on disk 535 //---------------------------------------------------------------------- 536 size_t ObjectFile::ReadSectionData(Section *section, 537 DataExtractor §ion_data) { 538 // If some other objectfile owns this data, pass this to them. 539 if (section->GetObjectFile() != this) 540 return section->GetObjectFile()->ReadSectionData(section, section_data); 541 542 if (IsInMemory()) { 543 ProcessSP process_sp(m_process_wp.lock()); 544 if (process_sp) { 545 const addr_t base_load_addr = 546 section->GetLoadBaseAddress(&process_sp->GetTarget()); 547 if (base_load_addr != LLDB_INVALID_ADDRESS) { 548 DataBufferSP data_sp( 549 ReadMemory(process_sp, base_load_addr, section->GetByteSize())); 550 if (data_sp) { 551 section_data.SetData(data_sp, 0, data_sp->GetByteSize()); 552 section_data.SetByteOrder(process_sp->GetByteOrder()); 553 section_data.SetAddressByteSize(process_sp->GetAddressByteSize()); 554 return section_data.GetByteSize(); 555 } 556 } 557 } 558 return GetData(section->GetFileOffset(), section->GetFileSize(), 559 section_data); 560 } else { 561 // The object file now contains a full mmap'ed copy of the object file data, 562 // so just use this 563 if (!section->IsRelocated()) 564 RelocateSection(section); 565 566 return GetData(section->GetFileOffset(), section->GetFileSize(), 567 section_data); 568 } 569 } 570 571 bool ObjectFile::SplitArchivePathWithObject(const char *path_with_object, 572 FileSpec &archive_file, 573 ConstString &archive_object, 574 bool must_exist) { 575 RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$")); 576 RegularExpression::Match regex_match(2); 577 if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object), 578 ®ex_match)) { 579 std::string path; 580 std::string obj; 581 if (regex_match.GetMatchAtIndex(path_with_object, 1, path) && 582 regex_match.GetMatchAtIndex(path_with_object, 2, obj)) { 583 archive_file.SetFile(path, false); 584 archive_object.SetCString(obj.c_str()); 585 if (must_exist && !archive_file.Exists()) 586 return false; 587 return true; 588 } 589 } 590 return false; 591 } 592 593 void ObjectFile::ClearSymtab() { 594 ModuleSP module_sp(GetModule()); 595 if (module_sp) { 596 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 597 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 598 if (log) 599 log->Printf("%p ObjectFile::ClearSymtab () symtab = %p", 600 static_cast<void *>(this), 601 static_cast<void *>(m_symtab_ap.get())); 602 m_symtab_ap.reset(); 603 } 604 } 605 606 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 607 if (m_sections_ap.get() == nullptr) { 608 if (update_module_section_list) { 609 ModuleSP module_sp(GetModule()); 610 if (module_sp) { 611 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 612 CreateSections(*module_sp->GetUnifiedSectionList()); 613 } 614 } else { 615 SectionList unified_section_list; 616 CreateSections(unified_section_list); 617 } 618 } 619 return m_sections_ap.get(); 620 } 621 622 lldb::SymbolType 623 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 624 lldb::SymbolType symbol_type_hint) { 625 if (!name.empty()) { 626 if (name.startswith("_OBJC_")) { 627 // ObjC 628 if (name.startswith("_OBJC_CLASS_$_")) 629 return lldb::eSymbolTypeObjCClass; 630 if (name.startswith("_OBJC_METACLASS_$_")) 631 return lldb::eSymbolTypeObjCMetaClass; 632 if (name.startswith("_OBJC_IVAR_$_")) 633 return lldb::eSymbolTypeObjCIVar; 634 } else if (name.startswith(".objc_class_name_")) { 635 // ObjC v1 636 return lldb::eSymbolTypeObjCClass; 637 } 638 } 639 return symbol_type_hint; 640 } 641 642 ConstString ObjectFile::GetNextSyntheticSymbolName() { 643 StreamString ss; 644 ConstString file_name = GetModule()->GetFileSpec().GetFilename(); 645 ss.Printf("___lldb_unnamed_symbol%u$$%s", ++m_synthetic_symbol_idx, 646 file_name.GetCString()); 647 return ConstString(ss.GetString()); 648 } 649 650 std::vector<ObjectFile::LoadableData> 651 ObjectFile::GetLoadableData(Target &target) { 652 std::vector<LoadableData> loadables; 653 SectionList *section_list = GetSectionList(); 654 if (!section_list) 655 return loadables; 656 // Create a list of loadable data from loadable sections 657 size_t section_count = section_list->GetNumSections(0); 658 for (size_t i = 0; i < section_count; ++i) { 659 LoadableData loadable; 660 SectionSP section_sp = section_list->GetSectionAtIndex(i); 661 loadable.Dest = 662 target.GetSectionLoadList().GetSectionLoadAddress(section_sp); 663 if (loadable.Dest == LLDB_INVALID_ADDRESS) 664 continue; 665 // We can skip sections like bss 666 if (section_sp->GetFileSize() == 0) 667 continue; 668 DataExtractor section_data; 669 section_sp->GetSectionData(section_data); 670 loadable.Contents = llvm::ArrayRef<uint8_t>(section_data.GetDataStart(), 671 section_data.GetByteSize()); 672 loadables.push_back(loadable); 673 } 674 return loadables; 675 } 676 677 void ObjectFile::RelocateSection(lldb_private::Section *section) 678 { 679 } 680 681 DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size, 682 uint64_t Offset) { 683 return DataBufferLLVM::CreateSliceFromPath(file.GetPath(), Size, Offset); 684 } 685