1 //===-- ObjectFile.cpp ----------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "lldb/Symbol/ObjectFile.h" 10 #include "lldb/Core/Module.h" 11 #include "lldb/Core/ModuleSpec.h" 12 #include "lldb/Core/PluginManager.h" 13 #include "lldb/Core/Section.h" 14 #include "lldb/Symbol/CallFrameInfo.h" 15 #include "lldb/Symbol/ObjectContainer.h" 16 #include "lldb/Symbol/SymbolFile.h" 17 #include "lldb/Target/Process.h" 18 #include "lldb/Target/SectionLoadList.h" 19 #include "lldb/Target/Target.h" 20 #include "lldb/Utility/DataBuffer.h" 21 #include "lldb/Utility/DataBufferHeap.h" 22 #include "lldb/Utility/Log.h" 23 #include "lldb/Utility/Timer.h" 24 #include "lldb/lldb-private.h" 25 26 using namespace lldb; 27 using namespace lldb_private; 28 29 char ObjectFile::ID; 30 31 ObjectFileSP 32 ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file, 33 lldb::offset_t file_offset, lldb::offset_t file_size, 34 DataBufferSP &data_sp, lldb::offset_t &data_offset) { 35 ObjectFileSP object_file_sp; 36 37 if (module_sp) { 38 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 39 Timer scoped_timer( 40 func_cat, 41 "ObjectFile::FindPlugin (module = %s, file = %p, file_offset = " 42 "0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")", 43 module_sp->GetFileSpec().GetPath().c_str(), 44 static_cast<const void *>(file), static_cast<uint64_t>(file_offset), 45 static_cast<uint64_t>(file_size)); 46 if (file) { 47 FileSpec archive_file; 48 ObjectContainerCreateInstance create_object_container_callback; 49 50 const bool file_exists = FileSystem::Instance().Exists(*file); 51 if (!data_sp) { 52 // We have an object name which most likely means we have a .o file in 53 // a static archive (.a file). Try and see if we have a cached archive 54 // first without reading any data first 55 if (file_exists && module_sp->GetObjectName()) { 56 for (uint32_t idx = 0; 57 (create_object_container_callback = 58 PluginManager::GetObjectContainerCreateCallbackAtIndex( 59 idx)) != nullptr; 60 ++idx) { 61 std::unique_ptr<ObjectContainer> object_container_up( 62 create_object_container_callback(module_sp, data_sp, 63 data_offset, file, file_offset, 64 file_size)); 65 66 if (object_container_up) 67 object_file_sp = object_container_up->GetObjectFile(file); 68 69 if (object_file_sp.get()) 70 return object_file_sp; 71 } 72 } 73 // Ok, we didn't find any containers that have a named object, now lets 74 // read the first 512 bytes from the file so the object file and object 75 // container plug-ins can use these bytes to see if they can parse this 76 // file. 77 if (file_size > 0) { 78 data_sp = FileSystem::Instance().CreateDataBuffer(file->GetPath(), 79 512, file_offset); 80 data_offset = 0; 81 } 82 } 83 84 if (!data_sp || data_sp->GetByteSize() == 0) { 85 // Check for archive file with format "/path/to/archive.a(object.o)" 86 llvm::SmallString<256> path_with_object; 87 module_sp->GetFileSpec().GetPath(path_with_object); 88 89 ConstString archive_object; 90 const bool must_exist = true; 91 if (ObjectFile::SplitArchivePathWithObject( 92 path_with_object, archive_file, archive_object, must_exist)) { 93 file_size = FileSystem::Instance().GetByteSize(archive_file); 94 if (file_size > 0) { 95 file = &archive_file; 96 module_sp->SetFileSpecAndObjectName(archive_file, archive_object); 97 // Check if this is a object container by iterating through all 98 // object container plugin instances and then trying to get an 99 // object file from the container plugins since we had a name. 100 // Also, don't read 101 // ANY data in case there is data cached in the container plug-ins 102 // (like BSD archives caching the contained objects within an 103 // file). 104 for (uint32_t idx = 0; 105 (create_object_container_callback = 106 PluginManager::GetObjectContainerCreateCallbackAtIndex( 107 idx)) != nullptr; 108 ++idx) { 109 std::unique_ptr<ObjectContainer> object_container_up( 110 create_object_container_callback(module_sp, data_sp, 111 data_offset, file, 112 file_offset, file_size)); 113 114 if (object_container_up) 115 object_file_sp = object_container_up->GetObjectFile(file); 116 117 if (object_file_sp.get()) 118 return object_file_sp; 119 } 120 // We failed to find any cached object files in the container plug- 121 // ins, so lets read the first 512 bytes and try again below... 122 data_sp = FileSystem::Instance().CreateDataBuffer( 123 archive_file.GetPath(), 512, file_offset); 124 } 125 } 126 } 127 128 if (data_sp && data_sp->GetByteSize() > 0) { 129 // Check if this is a normal object file by iterating through all 130 // object file plugin instances. 131 ObjectFileCreateInstance create_object_file_callback; 132 for (uint32_t idx = 0; 133 (create_object_file_callback = 134 PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != 135 nullptr; 136 ++idx) { 137 object_file_sp.reset(create_object_file_callback( 138 module_sp, data_sp, data_offset, file, file_offset, file_size)); 139 if (object_file_sp.get()) 140 return object_file_sp; 141 } 142 143 // Check if this is a object container by iterating through all object 144 // container plugin instances and then trying to get an object file 145 // from the container. 146 for (uint32_t idx = 0; 147 (create_object_container_callback = 148 PluginManager::GetObjectContainerCreateCallbackAtIndex( 149 idx)) != nullptr; 150 ++idx) { 151 std::unique_ptr<ObjectContainer> object_container_up( 152 create_object_container_callback(module_sp, data_sp, data_offset, 153 file, file_offset, file_size)); 154 155 if (object_container_up) 156 object_file_sp = object_container_up->GetObjectFile(file); 157 158 if (object_file_sp.get()) 159 return object_file_sp; 160 } 161 } 162 } 163 } 164 // We didn't find it, so clear our shared pointer in case it contains 165 // anything and return an empty shared pointer 166 object_file_sp.reset(); 167 return object_file_sp; 168 } 169 170 ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, 171 const ProcessSP &process_sp, 172 lldb::addr_t header_addr, 173 DataBufferSP &data_sp) { 174 ObjectFileSP object_file_sp; 175 176 if (module_sp) { 177 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 178 Timer scoped_timer(func_cat, 179 "ObjectFile::FindPlugin (module = " 180 "%s, process = %p, header_addr = " 181 "0x%" PRIx64 ")", 182 module_sp->GetFileSpec().GetPath().c_str(), 183 static_cast<void *>(process_sp.get()), header_addr); 184 uint32_t idx; 185 186 // Check if this is a normal object file by iterating through all object 187 // file plugin instances. 188 ObjectFileCreateMemoryInstance create_callback; 189 for (idx = 0; 190 (create_callback = 191 PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) != 192 nullptr; 193 ++idx) { 194 object_file_sp.reset( 195 create_callback(module_sp, data_sp, process_sp, header_addr)); 196 if (object_file_sp.get()) 197 return object_file_sp; 198 } 199 } 200 201 // We didn't find it, so clear our shared pointer in case it contains 202 // anything and return an empty shared pointer 203 object_file_sp.reset(); 204 return object_file_sp; 205 } 206 207 size_t ObjectFile::GetModuleSpecifications(const FileSpec &file, 208 lldb::offset_t file_offset, 209 lldb::offset_t file_size, 210 ModuleSpecList &specs) { 211 DataBufferSP data_sp = 212 FileSystem::Instance().CreateDataBuffer(file.GetPath(), 512, file_offset); 213 if (data_sp) { 214 if (file_size == 0) { 215 const lldb::offset_t actual_file_size = 216 FileSystem::Instance().GetByteSize(file); 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(), m_process_wp(), 268 m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_up(), m_symtab_up(), 269 m_synthetic_symbol_idx(0) { 270 if (file_spec_ptr) 271 m_file = *file_spec_ptr; 272 if (data_sp) 273 m_data.SetData(data_sp, data_offset, length); 274 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 275 LLDB_LOGF(log, 276 "%p ObjectFile::ObjectFile() module = %p (%s), file = %s, " 277 "file_offset = 0x%8.8" PRIx64 ", size = %" PRIu64, 278 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 279 module_sp->GetSpecificationDescription().c_str(), 280 m_file ? m_file.GetPath().c_str() : "<NULL>", m_file_offset, 281 m_length); 282 } 283 284 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 285 const ProcessSP &process_sp, lldb::addr_t header_addr, 286 DataBufferSP &header_data_sp) 287 : ModuleChild(module_sp), m_file(), m_type(eTypeInvalid), 288 m_strata(eStrataInvalid), m_file_offset(0), m_length(0), m_data(), 289 m_process_wp(process_sp), m_memory_addr(header_addr), m_sections_up(), 290 m_symtab_up(), m_synthetic_symbol_idx(0) { 291 if (header_data_sp) 292 m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize()); 293 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 294 LLDB_LOGF(log, 295 "%p ObjectFile::ObjectFile() module = %p (%s), process = %p, " 296 "header_addr = 0x%" PRIx64, 297 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 298 module_sp->GetSpecificationDescription().c_str(), 299 static_cast<void *>(process_sp.get()), m_memory_addr); 300 } 301 302 ObjectFile::~ObjectFile() { 303 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 304 LLDB_LOGF(log, "%p ObjectFile::~ObjectFile ()\n", static_cast<void *>(this)); 305 } 306 307 bool ObjectFile::SetModulesArchitecture(const ArchSpec &new_arch) { 308 ModuleSP module_sp(GetModule()); 309 if (module_sp) 310 return module_sp->SetArchitecture(new_arch); 311 return false; 312 } 313 314 AddressClass ObjectFile::GetAddressClass(addr_t file_addr) { 315 Symtab *symtab = GetSymtab(); 316 if (symtab) { 317 Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); 318 if (symbol) { 319 if (symbol->ValueIsAddress()) { 320 const SectionSP section_sp(symbol->GetAddressRef().GetSection()); 321 if (section_sp) { 322 const SectionType section_type = section_sp->GetType(); 323 switch (section_type) { 324 case eSectionTypeInvalid: 325 return AddressClass::eUnknown; 326 case eSectionTypeCode: 327 return AddressClass::eCode; 328 case eSectionTypeContainer: 329 return AddressClass::eUnknown; 330 case eSectionTypeData: 331 case eSectionTypeDataCString: 332 case eSectionTypeDataCStringPointers: 333 case eSectionTypeDataSymbolAddress: 334 case eSectionTypeData4: 335 case eSectionTypeData8: 336 case eSectionTypeData16: 337 case eSectionTypeDataPointers: 338 case eSectionTypeZeroFill: 339 case eSectionTypeDataObjCMessageRefs: 340 case eSectionTypeDataObjCCFStrings: 341 case eSectionTypeGoSymtab: 342 return AddressClass::eData; 343 case eSectionTypeDebug: 344 case eSectionTypeDWARFDebugAbbrev: 345 case eSectionTypeDWARFDebugAbbrevDwo: 346 case eSectionTypeDWARFDebugAddr: 347 case eSectionTypeDWARFDebugAranges: 348 case eSectionTypeDWARFDebugCuIndex: 349 case eSectionTypeDWARFDebugFrame: 350 case eSectionTypeDWARFDebugInfo: 351 case eSectionTypeDWARFDebugInfoDwo: 352 case eSectionTypeDWARFDebugLine: 353 case eSectionTypeDWARFDebugLineStr: 354 case eSectionTypeDWARFDebugLoc: 355 case eSectionTypeDWARFDebugLocDwo: 356 case eSectionTypeDWARFDebugLocLists: 357 case eSectionTypeDWARFDebugLocListsDwo: 358 case eSectionTypeDWARFDebugMacInfo: 359 case eSectionTypeDWARFDebugMacro: 360 case eSectionTypeDWARFDebugNames: 361 case eSectionTypeDWARFDebugPubNames: 362 case eSectionTypeDWARFDebugPubTypes: 363 case eSectionTypeDWARFDebugRanges: 364 case eSectionTypeDWARFDebugRngLists: 365 case eSectionTypeDWARFDebugRngListsDwo: 366 case eSectionTypeDWARFDebugStr: 367 case eSectionTypeDWARFDebugStrDwo: 368 case eSectionTypeDWARFDebugStrOffsets: 369 case eSectionTypeDWARFDebugStrOffsetsDwo: 370 case eSectionTypeDWARFDebugTuIndex: 371 case eSectionTypeDWARFDebugTypes: 372 case eSectionTypeDWARFDebugTypesDwo: 373 case eSectionTypeDWARFAppleNames: 374 case eSectionTypeDWARFAppleTypes: 375 case eSectionTypeDWARFAppleNamespaces: 376 case eSectionTypeDWARFAppleObjC: 377 case eSectionTypeDWARFGNUDebugAltLink: 378 return AddressClass::eDebug; 379 case eSectionTypeEHFrame: 380 case eSectionTypeARMexidx: 381 case eSectionTypeARMextab: 382 case eSectionTypeCompactUnwind: 383 return AddressClass::eRuntime; 384 case eSectionTypeELFSymbolTable: 385 case eSectionTypeELFDynamicSymbols: 386 case eSectionTypeELFRelocationEntries: 387 case eSectionTypeELFDynamicLinkInfo: 388 case eSectionTypeOther: 389 return AddressClass::eUnknown; 390 case eSectionTypeAbsoluteAddress: 391 // In case of absolute sections decide the address class based on 392 // the symbol type because the section type isn't specify if it is 393 // a code or a data section. 394 break; 395 } 396 } 397 } 398 399 const SymbolType symbol_type = symbol->GetType(); 400 switch (symbol_type) { 401 case eSymbolTypeAny: 402 return AddressClass::eUnknown; 403 case eSymbolTypeAbsolute: 404 return AddressClass::eUnknown; 405 case eSymbolTypeCode: 406 return AddressClass::eCode; 407 case eSymbolTypeTrampoline: 408 return AddressClass::eCode; 409 case eSymbolTypeResolver: 410 return AddressClass::eCode; 411 case eSymbolTypeData: 412 return AddressClass::eData; 413 case eSymbolTypeRuntime: 414 return AddressClass::eRuntime; 415 case eSymbolTypeException: 416 return AddressClass::eRuntime; 417 case eSymbolTypeSourceFile: 418 return AddressClass::eDebug; 419 case eSymbolTypeHeaderFile: 420 return AddressClass::eDebug; 421 case eSymbolTypeObjectFile: 422 return AddressClass::eDebug; 423 case eSymbolTypeCommonBlock: 424 return AddressClass::eDebug; 425 case eSymbolTypeBlock: 426 return AddressClass::eDebug; 427 case eSymbolTypeLocal: 428 return AddressClass::eData; 429 case eSymbolTypeParam: 430 return AddressClass::eData; 431 case eSymbolTypeVariable: 432 return AddressClass::eData; 433 case eSymbolTypeVariableType: 434 return AddressClass::eDebug; 435 case eSymbolTypeLineEntry: 436 return AddressClass::eDebug; 437 case eSymbolTypeLineHeader: 438 return AddressClass::eDebug; 439 case eSymbolTypeScopeBegin: 440 return AddressClass::eDebug; 441 case eSymbolTypeScopeEnd: 442 return AddressClass::eDebug; 443 case eSymbolTypeAdditional: 444 return AddressClass::eUnknown; 445 case eSymbolTypeCompiler: 446 return AddressClass::eDebug; 447 case eSymbolTypeInstrumentation: 448 return AddressClass::eDebug; 449 case eSymbolTypeUndefined: 450 return AddressClass::eUnknown; 451 case eSymbolTypeObjCClass: 452 return AddressClass::eRuntime; 453 case eSymbolTypeObjCMetaClass: 454 return AddressClass::eRuntime; 455 case eSymbolTypeObjCIVar: 456 return AddressClass::eRuntime; 457 case eSymbolTypeReExported: 458 return AddressClass::eRuntime; 459 } 460 } 461 } 462 return AddressClass::eUnknown; 463 } 464 465 DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp, 466 lldb::addr_t addr, size_t byte_size) { 467 DataBufferSP data_sp; 468 if (process_sp) { 469 std::unique_ptr<DataBufferHeap> data_up(new DataBufferHeap(byte_size, 0)); 470 Status error; 471 const size_t bytes_read = process_sp->ReadMemory( 472 addr, data_up->GetBytes(), data_up->GetByteSize(), error); 473 if (bytes_read == byte_size) 474 data_sp.reset(data_up.release()); 475 } 476 return data_sp; 477 } 478 479 size_t ObjectFile::GetData(lldb::offset_t offset, size_t length, 480 DataExtractor &data) const { 481 // The entire file has already been mmap'ed into m_data, so just copy from 482 // there as the back mmap buffer will be shared with shared pointers. 483 return data.SetData(m_data, offset, length); 484 } 485 486 size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length, 487 void *dst) const { 488 // The entire file has already been mmap'ed into m_data, so just copy from 489 // there Note that the data remains in target byte order. 490 return m_data.CopyData(offset, length, dst); 491 } 492 493 size_t ObjectFile::ReadSectionData(Section *section, 494 lldb::offset_t section_offset, void *dst, 495 size_t dst_len) { 496 assert(section); 497 section_offset *= section->GetTargetByteSize(); 498 499 // If some other objectfile owns this data, pass this to them. 500 if (section->GetObjectFile() != this) 501 return section->GetObjectFile()->ReadSectionData(section, section_offset, 502 dst, dst_len); 503 504 if (IsInMemory()) { 505 ProcessSP process_sp(m_process_wp.lock()); 506 if (process_sp) { 507 Status error; 508 const addr_t base_load_addr = 509 section->GetLoadBaseAddress(&process_sp->GetTarget()); 510 if (base_load_addr != LLDB_INVALID_ADDRESS) 511 return process_sp->ReadMemory(base_load_addr + section_offset, dst, 512 dst_len, error); 513 } 514 } else { 515 if (!section->IsRelocated()) 516 RelocateSection(section); 517 518 const lldb::offset_t section_file_size = section->GetFileSize(); 519 if (section_offset < section_file_size) { 520 const size_t section_bytes_left = section_file_size - section_offset; 521 size_t section_dst_len = dst_len; 522 if (section_dst_len > section_bytes_left) 523 section_dst_len = section_bytes_left; 524 return CopyData(section->GetFileOffset() + section_offset, 525 section_dst_len, dst); 526 } else { 527 if (section->GetType() == eSectionTypeZeroFill) { 528 const uint64_t section_size = section->GetByteSize(); 529 const uint64_t section_bytes_left = section_size - section_offset; 530 uint64_t section_dst_len = dst_len; 531 if (section_dst_len > section_bytes_left) 532 section_dst_len = section_bytes_left; 533 memset(dst, 0, section_dst_len); 534 return section_dst_len; 535 } 536 } 537 } 538 return 0; 539 } 540 541 // Get the section data the file on disk 542 size_t ObjectFile::ReadSectionData(Section *section, 543 DataExtractor §ion_data) { 544 // If some other objectfile owns this data, pass this to them. 545 if (section->GetObjectFile() != this) 546 return section->GetObjectFile()->ReadSectionData(section, section_data); 547 548 if (IsInMemory()) { 549 ProcessSP process_sp(m_process_wp.lock()); 550 if (process_sp) { 551 const addr_t base_load_addr = 552 section->GetLoadBaseAddress(&process_sp->GetTarget()); 553 if (base_load_addr != LLDB_INVALID_ADDRESS) { 554 DataBufferSP data_sp( 555 ReadMemory(process_sp, base_load_addr, section->GetByteSize())); 556 if (data_sp) { 557 section_data.SetData(data_sp, 0, data_sp->GetByteSize()); 558 section_data.SetByteOrder(process_sp->GetByteOrder()); 559 section_data.SetAddressByteSize(process_sp->GetAddressByteSize()); 560 return section_data.GetByteSize(); 561 } 562 } 563 } 564 return GetData(section->GetFileOffset(), section->GetFileSize(), 565 section_data); 566 } else { 567 // The object file now contains a full mmap'ed copy of the object file 568 // data, so just use this 569 if (!section->IsRelocated()) 570 RelocateSection(section); 571 572 return GetData(section->GetFileOffset(), section->GetFileSize(), 573 section_data); 574 } 575 } 576 577 bool ObjectFile::SplitArchivePathWithObject(llvm::StringRef path_with_object, 578 FileSpec &archive_file, 579 ConstString &archive_object, 580 bool must_exist) { 581 size_t len = path_with_object.size(); 582 if (len < 2 || path_with_object.back() != ')') 583 return false; 584 llvm::StringRef archive = path_with_object.substr(0, path_with_object.rfind('(')); 585 if (archive.empty()) 586 return false; 587 llvm::StringRef object = path_with_object.substr(archive.size() + 1).drop_back(); 588 archive_file.SetFile(archive, FileSpec::Style::native); 589 if (must_exist && !FileSystem::Instance().Exists(archive_file)) 590 return false; 591 archive_object.SetString(object); 592 return true; 593 } 594 595 void ObjectFile::ClearSymtab() { 596 ModuleSP module_sp(GetModule()); 597 if (module_sp) { 598 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 599 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 600 LLDB_LOGF(log, "%p ObjectFile::ClearSymtab () symtab = %p", 601 static_cast<void *>(this), 602 static_cast<void *>(m_symtab_up.get())); 603 m_symtab_up.reset(); 604 } 605 } 606 607 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 608 if (m_sections_up == nullptr) { 609 if (update_module_section_list) { 610 ModuleSP module_sp(GetModule()); 611 if (module_sp) { 612 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 613 CreateSections(*module_sp->GetUnifiedSectionList()); 614 } 615 } else { 616 SectionList unified_section_list; 617 CreateSections(unified_section_list); 618 } 619 } 620 return m_sections_up.get(); 621 } 622 623 lldb::SymbolType 624 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 625 lldb::SymbolType symbol_type_hint) { 626 if (!name.empty()) { 627 if (name.startswith("_OBJC_")) { 628 // ObjC 629 if (name.startswith("_OBJC_CLASS_$_")) 630 return lldb::eSymbolTypeObjCClass; 631 if (name.startswith("_OBJC_METACLASS_$_")) 632 return lldb::eSymbolTypeObjCMetaClass; 633 if (name.startswith("_OBJC_IVAR_$_")) 634 return lldb::eSymbolTypeObjCIVar; 635 } else if (name.startswith(".objc_class_name_")) { 636 // ObjC v1 637 return lldb::eSymbolTypeObjCClass; 638 } 639 } 640 return symbol_type_hint; 641 } 642 643 ConstString ObjectFile::GetNextSyntheticSymbolName() { 644 StreamString ss; 645 ConstString file_name = GetModule()->GetFileSpec().GetFilename(); 646 ss.Printf("___lldb_unnamed_symbol%u$$%s", ++m_synthetic_symbol_idx, 647 file_name.GetCString()); 648 return ConstString(ss.GetString()); 649 } 650 651 std::vector<ObjectFile::LoadableData> 652 ObjectFile::GetLoadableData(Target &target) { 653 std::vector<LoadableData> loadables; 654 SectionList *section_list = GetSectionList(); 655 if (!section_list) 656 return loadables; 657 // Create a list of loadable data from loadable sections 658 size_t section_count = section_list->GetNumSections(0); 659 for (size_t i = 0; i < section_count; ++i) { 660 LoadableData loadable; 661 SectionSP section_sp = section_list->GetSectionAtIndex(i); 662 loadable.Dest = 663 target.GetSectionLoadList().GetSectionLoadAddress(section_sp); 664 if (loadable.Dest == LLDB_INVALID_ADDRESS) 665 continue; 666 // We can skip sections like bss 667 if (section_sp->GetFileSize() == 0) 668 continue; 669 DataExtractor section_data; 670 section_sp->GetSectionData(section_data); 671 loadable.Contents = llvm::ArrayRef<uint8_t>(section_data.GetDataStart(), 672 section_data.GetByteSize()); 673 loadables.push_back(loadable); 674 } 675 return loadables; 676 } 677 678 std::unique_ptr<CallFrameInfo> ObjectFile::CreateCallFrameInfo() { 679 return {}; 680 } 681 682 void ObjectFile::RelocateSection(lldb_private::Section *section) 683 { 684 } 685 686 DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size, 687 uint64_t Offset) { 688 return FileSystem::Instance().CreateDataBuffer(file.GetPath(), Size, Offset); 689 } 690 691 void llvm::format_provider<ObjectFile::Type>::format( 692 const ObjectFile::Type &type, raw_ostream &OS, StringRef Style) { 693 switch (type) { 694 case ObjectFile::eTypeInvalid: 695 OS << "invalid"; 696 break; 697 case ObjectFile::eTypeCoreFile: 698 OS << "core file"; 699 break; 700 case ObjectFile::eTypeExecutable: 701 OS << "executable"; 702 break; 703 case ObjectFile::eTypeDebugInfo: 704 OS << "debug info"; 705 break; 706 case ObjectFile::eTypeDynamicLinker: 707 OS << "dynamic linker"; 708 break; 709 case ObjectFile::eTypeObjectFile: 710 OS << "object file"; 711 break; 712 case ObjectFile::eTypeSharedLibrary: 713 OS << "shared library"; 714 break; 715 case ObjectFile::eTypeStubLibrary: 716 OS << "stub library"; 717 break; 718 case ObjectFile::eTypeJIT: 719 OS << "jit"; 720 break; 721 case ObjectFile::eTypeUnknown: 722 OS << "unknown"; 723 break; 724 } 725 } 726 727 void llvm::format_provider<ObjectFile::Strata>::format( 728 const ObjectFile::Strata &strata, raw_ostream &OS, StringRef Style) { 729 switch (strata) { 730 case ObjectFile::eStrataInvalid: 731 OS << "invalid"; 732 break; 733 case ObjectFile::eStrataUnknown: 734 OS << "unknown"; 735 break; 736 case ObjectFile::eStrataUser: 737 OS << "user"; 738 break; 739 case ObjectFile::eStrataKernel: 740 OS << "kernel"; 741 break; 742 case ObjectFile::eStrataRawImage: 743 OS << "raw image"; 744 break; 745 case ObjectFile::eStrataJIT: 746 OS << "jit"; 747 break; 748 } 749 } 750