1 //===-- ObjectFile.cpp ------------------------------------------*- C++ -*-===// 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 eSectionTypeDWARFDebugLocLists: 356 case eSectionTypeDWARFDebugMacInfo: 357 case eSectionTypeDWARFDebugMacro: 358 case eSectionTypeDWARFDebugNames: 359 case eSectionTypeDWARFDebugPubNames: 360 case eSectionTypeDWARFDebugPubTypes: 361 case eSectionTypeDWARFDebugRanges: 362 case eSectionTypeDWARFDebugRngLists: 363 case eSectionTypeDWARFDebugStr: 364 case eSectionTypeDWARFDebugStrDwo: 365 case eSectionTypeDWARFDebugStrOffsets: 366 case eSectionTypeDWARFDebugStrOffsetsDwo: 367 case eSectionTypeDWARFDebugTypes: 368 case eSectionTypeDWARFDebugTypesDwo: 369 case eSectionTypeDWARFAppleNames: 370 case eSectionTypeDWARFAppleTypes: 371 case eSectionTypeDWARFAppleNamespaces: 372 case eSectionTypeDWARFAppleObjC: 373 case eSectionTypeDWARFGNUDebugAltLink: 374 return AddressClass::eDebug; 375 case eSectionTypeEHFrame: 376 case eSectionTypeARMexidx: 377 case eSectionTypeARMextab: 378 case eSectionTypeCompactUnwind: 379 return AddressClass::eRuntime; 380 case eSectionTypeELFSymbolTable: 381 case eSectionTypeELFDynamicSymbols: 382 case eSectionTypeELFRelocationEntries: 383 case eSectionTypeELFDynamicLinkInfo: 384 case eSectionTypeOther: 385 return AddressClass::eUnknown; 386 case eSectionTypeAbsoluteAddress: 387 // In case of absolute sections decide the address class based on 388 // the symbol type because the section type isn't specify if it is 389 // a code or a data section. 390 break; 391 } 392 } 393 } 394 395 const SymbolType symbol_type = symbol->GetType(); 396 switch (symbol_type) { 397 case eSymbolTypeAny: 398 return AddressClass::eUnknown; 399 case eSymbolTypeAbsolute: 400 return AddressClass::eUnknown; 401 case eSymbolTypeCode: 402 return AddressClass::eCode; 403 case eSymbolTypeTrampoline: 404 return AddressClass::eCode; 405 case eSymbolTypeResolver: 406 return AddressClass::eCode; 407 case eSymbolTypeData: 408 return AddressClass::eData; 409 case eSymbolTypeRuntime: 410 return AddressClass::eRuntime; 411 case eSymbolTypeException: 412 return AddressClass::eRuntime; 413 case eSymbolTypeSourceFile: 414 return AddressClass::eDebug; 415 case eSymbolTypeHeaderFile: 416 return AddressClass::eDebug; 417 case eSymbolTypeObjectFile: 418 return AddressClass::eDebug; 419 case eSymbolTypeCommonBlock: 420 return AddressClass::eDebug; 421 case eSymbolTypeBlock: 422 return AddressClass::eDebug; 423 case eSymbolTypeLocal: 424 return AddressClass::eData; 425 case eSymbolTypeParam: 426 return AddressClass::eData; 427 case eSymbolTypeVariable: 428 return AddressClass::eData; 429 case eSymbolTypeVariableType: 430 return AddressClass::eDebug; 431 case eSymbolTypeLineEntry: 432 return AddressClass::eDebug; 433 case eSymbolTypeLineHeader: 434 return AddressClass::eDebug; 435 case eSymbolTypeScopeBegin: 436 return AddressClass::eDebug; 437 case eSymbolTypeScopeEnd: 438 return AddressClass::eDebug; 439 case eSymbolTypeAdditional: 440 return AddressClass::eUnknown; 441 case eSymbolTypeCompiler: 442 return AddressClass::eDebug; 443 case eSymbolTypeInstrumentation: 444 return AddressClass::eDebug; 445 case eSymbolTypeUndefined: 446 return AddressClass::eUnknown; 447 case eSymbolTypeObjCClass: 448 return AddressClass::eRuntime; 449 case eSymbolTypeObjCMetaClass: 450 return AddressClass::eRuntime; 451 case eSymbolTypeObjCIVar: 452 return AddressClass::eRuntime; 453 case eSymbolTypeReExported: 454 return AddressClass::eRuntime; 455 } 456 } 457 } 458 return AddressClass::eUnknown; 459 } 460 461 DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp, 462 lldb::addr_t addr, size_t byte_size) { 463 DataBufferSP data_sp; 464 if (process_sp) { 465 std::unique_ptr<DataBufferHeap> data_up(new DataBufferHeap(byte_size, 0)); 466 Status error; 467 const size_t bytes_read = process_sp->ReadMemory( 468 addr, data_up->GetBytes(), data_up->GetByteSize(), error); 469 if (bytes_read == byte_size) 470 data_sp.reset(data_up.release()); 471 } 472 return data_sp; 473 } 474 475 size_t ObjectFile::GetData(lldb::offset_t offset, size_t length, 476 DataExtractor &data) const { 477 // The entire file has already been mmap'ed into m_data, so just copy from 478 // there as the back mmap buffer will be shared with shared pointers. 479 return data.SetData(m_data, offset, length); 480 } 481 482 size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length, 483 void *dst) const { 484 // The entire file has already been mmap'ed into m_data, so just copy from 485 // there Note that the data remains in target byte order. 486 return m_data.CopyData(offset, length, dst); 487 } 488 489 size_t ObjectFile::ReadSectionData(Section *section, 490 lldb::offset_t section_offset, void *dst, 491 size_t dst_len) { 492 assert(section); 493 section_offset *= section->GetTargetByteSize(); 494 495 // If some other objectfile owns this data, pass this to them. 496 if (section->GetObjectFile() != this) 497 return section->GetObjectFile()->ReadSectionData(section, section_offset, 498 dst, dst_len); 499 500 if (IsInMemory()) { 501 ProcessSP process_sp(m_process_wp.lock()); 502 if (process_sp) { 503 Status error; 504 const addr_t base_load_addr = 505 section->GetLoadBaseAddress(&process_sp->GetTarget()); 506 if (base_load_addr != LLDB_INVALID_ADDRESS) 507 return process_sp->ReadMemory(base_load_addr + section_offset, dst, 508 dst_len, error); 509 } 510 } else { 511 if (!section->IsRelocated()) 512 RelocateSection(section); 513 514 const lldb::offset_t section_file_size = section->GetFileSize(); 515 if (section_offset < section_file_size) { 516 const size_t section_bytes_left = section_file_size - section_offset; 517 size_t section_dst_len = dst_len; 518 if (section_dst_len > section_bytes_left) 519 section_dst_len = section_bytes_left; 520 return CopyData(section->GetFileOffset() + section_offset, 521 section_dst_len, dst); 522 } else { 523 if (section->GetType() == eSectionTypeZeroFill) { 524 const uint64_t section_size = section->GetByteSize(); 525 const uint64_t section_bytes_left = section_size - section_offset; 526 uint64_t section_dst_len = dst_len; 527 if (section_dst_len > section_bytes_left) 528 section_dst_len = section_bytes_left; 529 memset(dst, 0, section_dst_len); 530 return section_dst_len; 531 } 532 } 533 } 534 return 0; 535 } 536 537 // Get the section data the file on disk 538 size_t ObjectFile::ReadSectionData(Section *section, 539 DataExtractor §ion_data) { 540 // If some other objectfile owns this data, pass this to them. 541 if (section->GetObjectFile() != this) 542 return section->GetObjectFile()->ReadSectionData(section, section_data); 543 544 if (IsInMemory()) { 545 ProcessSP process_sp(m_process_wp.lock()); 546 if (process_sp) { 547 const addr_t base_load_addr = 548 section->GetLoadBaseAddress(&process_sp->GetTarget()); 549 if (base_load_addr != LLDB_INVALID_ADDRESS) { 550 DataBufferSP data_sp( 551 ReadMemory(process_sp, base_load_addr, section->GetByteSize())); 552 if (data_sp) { 553 section_data.SetData(data_sp, 0, data_sp->GetByteSize()); 554 section_data.SetByteOrder(process_sp->GetByteOrder()); 555 section_data.SetAddressByteSize(process_sp->GetAddressByteSize()); 556 return section_data.GetByteSize(); 557 } 558 } 559 } 560 return GetData(section->GetFileOffset(), section->GetFileSize(), 561 section_data); 562 } else { 563 // The object file now contains a full mmap'ed copy of the object file 564 // data, so just use this 565 if (!section->IsRelocated()) 566 RelocateSection(section); 567 568 return GetData(section->GetFileOffset(), section->GetFileSize(), 569 section_data); 570 } 571 } 572 573 bool ObjectFile::SplitArchivePathWithObject(llvm::StringRef path_with_object, 574 FileSpec &archive_file, 575 ConstString &archive_object, 576 bool must_exist) { 577 size_t len = path_with_object.size(); 578 if (len < 2 || path_with_object.back() != ')') 579 return false; 580 llvm::StringRef archive = path_with_object.substr(0, path_with_object.rfind('(')); 581 if (archive.empty()) 582 return false; 583 llvm::StringRef object = path_with_object.substr(archive.size() + 1).drop_back(); 584 archive_file.SetFile(archive, FileSpec::Style::native); 585 if (must_exist && !FileSystem::Instance().Exists(archive_file)) 586 return false; 587 archive_object.SetString(object); 588 return true; 589 } 590 591 void ObjectFile::ClearSymtab() { 592 ModuleSP module_sp(GetModule()); 593 if (module_sp) { 594 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 595 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 596 LLDB_LOGF(log, "%p ObjectFile::ClearSymtab () symtab = %p", 597 static_cast<void *>(this), 598 static_cast<void *>(m_symtab_up.get())); 599 m_symtab_up.reset(); 600 } 601 } 602 603 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 604 if (m_sections_up == nullptr) { 605 if (update_module_section_list) { 606 ModuleSP module_sp(GetModule()); 607 if (module_sp) { 608 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 609 CreateSections(*module_sp->GetUnifiedSectionList()); 610 } 611 } else { 612 SectionList unified_section_list; 613 CreateSections(unified_section_list); 614 } 615 } 616 return m_sections_up.get(); 617 } 618 619 lldb::SymbolType 620 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 621 lldb::SymbolType symbol_type_hint) { 622 if (!name.empty()) { 623 if (name.startswith("_OBJC_")) { 624 // ObjC 625 if (name.startswith("_OBJC_CLASS_$_")) 626 return lldb::eSymbolTypeObjCClass; 627 if (name.startswith("_OBJC_METACLASS_$_")) 628 return lldb::eSymbolTypeObjCMetaClass; 629 if (name.startswith("_OBJC_IVAR_$_")) 630 return lldb::eSymbolTypeObjCIVar; 631 } else if (name.startswith(".objc_class_name_")) { 632 // ObjC v1 633 return lldb::eSymbolTypeObjCClass; 634 } 635 } 636 return symbol_type_hint; 637 } 638 639 ConstString ObjectFile::GetNextSyntheticSymbolName() { 640 StreamString ss; 641 ConstString file_name = GetModule()->GetFileSpec().GetFilename(); 642 ss.Printf("___lldb_unnamed_symbol%u$$%s", ++m_synthetic_symbol_idx, 643 file_name.GetCString()); 644 return ConstString(ss.GetString()); 645 } 646 647 std::vector<ObjectFile::LoadableData> 648 ObjectFile::GetLoadableData(Target &target) { 649 std::vector<LoadableData> loadables; 650 SectionList *section_list = GetSectionList(); 651 if (!section_list) 652 return loadables; 653 // Create a list of loadable data from loadable sections 654 size_t section_count = section_list->GetNumSections(0); 655 for (size_t i = 0; i < section_count; ++i) { 656 LoadableData loadable; 657 SectionSP section_sp = section_list->GetSectionAtIndex(i); 658 loadable.Dest = 659 target.GetSectionLoadList().GetSectionLoadAddress(section_sp); 660 if (loadable.Dest == LLDB_INVALID_ADDRESS) 661 continue; 662 // We can skip sections like bss 663 if (section_sp->GetFileSize() == 0) 664 continue; 665 DataExtractor section_data; 666 section_sp->GetSectionData(section_data); 667 loadable.Contents = llvm::ArrayRef<uint8_t>(section_data.GetDataStart(), 668 section_data.GetByteSize()); 669 loadables.push_back(loadable); 670 } 671 return loadables; 672 } 673 674 std::unique_ptr<CallFrameInfo> ObjectFile::CreateCallFrameInfo() { 675 return {}; 676 } 677 678 void ObjectFile::RelocateSection(lldb_private::Section *section) 679 { 680 } 681 682 DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size, 683 uint64_t Offset) { 684 return FileSystem::Instance().CreateDataBuffer(file.GetPath(), Size, Offset); 685 } 686 687 void llvm::format_provider<ObjectFile::Type>::format( 688 const ObjectFile::Type &type, raw_ostream &OS, StringRef Style) { 689 switch (type) { 690 case ObjectFile::eTypeInvalid: 691 OS << "invalid"; 692 break; 693 case ObjectFile::eTypeCoreFile: 694 OS << "core file"; 695 break; 696 case ObjectFile::eTypeExecutable: 697 OS << "executable"; 698 break; 699 case ObjectFile::eTypeDebugInfo: 700 OS << "debug info"; 701 break; 702 case ObjectFile::eTypeDynamicLinker: 703 OS << "dynamic linker"; 704 break; 705 case ObjectFile::eTypeObjectFile: 706 OS << "object file"; 707 break; 708 case ObjectFile::eTypeSharedLibrary: 709 OS << "shared library"; 710 break; 711 case ObjectFile::eTypeStubLibrary: 712 OS << "stub library"; 713 break; 714 case ObjectFile::eTypeJIT: 715 OS << "jit"; 716 break; 717 case ObjectFile::eTypeUnknown: 718 OS << "unknown"; 719 break; 720 } 721 } 722 723 void llvm::format_provider<ObjectFile::Strata>::format( 724 const ObjectFile::Strata &strata, raw_ostream &OS, StringRef Style) { 725 switch (strata) { 726 case ObjectFile::eStrataInvalid: 727 OS << "invalid"; 728 break; 729 case ObjectFile::eStrataUnknown: 730 OS << "unknown"; 731 break; 732 case ObjectFile::eStrataUser: 733 OS << "user"; 734 break; 735 case ObjectFile::eStrataKernel: 736 OS << "kernel"; 737 break; 738 case ObjectFile::eStrataRawImage: 739 OS << "raw image"; 740 break; 741 case ObjectFile::eStrataJIT: 742 OS << "jit"; 743 break; 744 } 745 } 746