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/ObjectContainer.h" 15 #include "lldb/Symbol/SymbolFile.h" 16 #include "lldb/Target/Process.h" 17 #include "lldb/Target/SectionLoadList.h" 18 #include "lldb/Target/Target.h" 19 #include "lldb/Utility/DataBuffer.h" 20 #include "lldb/Utility/DataBufferHeap.h" 21 #include "lldb/Utility/Log.h" 22 #include "lldb/Utility/RegularExpression.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 char path_with_object[PATH_MAX * 2]; 87 module_sp->GetFileSpec().GetPath(path_with_object, 88 sizeof(path_with_object)); 89 90 ConstString archive_object; 91 const bool must_exist = true; 92 if (ObjectFile::SplitArchivePathWithObject( 93 path_with_object, archive_file, archive_object, must_exist)) { 94 file_size = FileSystem::Instance().GetByteSize(archive_file); 95 if (file_size > 0) { 96 file = &archive_file; 97 module_sp->SetFileSpecAndObjectName(archive_file, archive_object); 98 // Check if this is a object container by iterating through all 99 // object container plugin instances and then trying to get an 100 // object file from the container plugins since we had a name. 101 // Also, don't read 102 // ANY data in case there is data cached in the container plug-ins 103 // (like BSD archives caching the contained objects within an 104 // file). 105 for (uint32_t idx = 0; 106 (create_object_container_callback = 107 PluginManager::GetObjectContainerCreateCallbackAtIndex( 108 idx)) != nullptr; 109 ++idx) { 110 std::unique_ptr<ObjectContainer> object_container_up( 111 create_object_container_callback(module_sp, data_sp, 112 data_offset, file, 113 file_offset, file_size)); 114 115 if (object_container_up) 116 object_file_sp = object_container_up->GetObjectFile(file); 117 118 if (object_file_sp.get()) 119 return object_file_sp; 120 } 121 // We failed to find any cached object files in the container plug- 122 // ins, so lets read the first 512 bytes and try again below... 123 data_sp = FileSystem::Instance().CreateDataBuffer( 124 archive_file.GetPath(), 512, file_offset); 125 } 126 } 127 } 128 129 if (data_sp && data_sp->GetByteSize() > 0) { 130 // Check if this is a normal object file by iterating through all 131 // object file plugin instances. 132 ObjectFileCreateInstance create_object_file_callback; 133 for (uint32_t idx = 0; 134 (create_object_file_callback = 135 PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != 136 nullptr; 137 ++idx) { 138 object_file_sp.reset(create_object_file_callback( 139 module_sp, data_sp, data_offset, file, file_offset, file_size)); 140 if (object_file_sp.get()) 141 return object_file_sp; 142 } 143 144 // Check if this is a object container by iterating through all object 145 // container plugin instances and then trying to get an object file 146 // from the container. 147 for (uint32_t idx = 0; 148 (create_object_container_callback = 149 PluginManager::GetObjectContainerCreateCallbackAtIndex( 150 idx)) != nullptr; 151 ++idx) { 152 std::unique_ptr<ObjectContainer> object_container_up( 153 create_object_container_callback(module_sp, data_sp, data_offset, 154 file, file_offset, file_size)); 155 156 if (object_container_up) 157 object_file_sp = object_container_up->GetObjectFile(file); 158 159 if (object_file_sp.get()) 160 return object_file_sp; 161 } 162 } 163 } 164 } 165 // We didn't find it, so clear our shared pointer in case it contains 166 // anything and return an empty shared pointer 167 object_file_sp.reset(); 168 return object_file_sp; 169 } 170 171 ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, 172 const ProcessSP &process_sp, 173 lldb::addr_t header_addr, 174 DataBufferSP &data_sp) { 175 ObjectFileSP object_file_sp; 176 177 if (module_sp) { 178 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 179 Timer scoped_timer(func_cat, 180 "ObjectFile::FindPlugin (module = " 181 "%s, process = %p, header_addr = " 182 "0x%" PRIx64 ")", 183 module_sp->GetFileSpec().GetPath().c_str(), 184 static_cast<void *>(process_sp.get()), header_addr); 185 uint32_t idx; 186 187 // Check if this is a normal object file by iterating through all object 188 // file plugin instances. 189 ObjectFileCreateMemoryInstance create_callback; 190 for (idx = 0; 191 (create_callback = 192 PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) != 193 nullptr; 194 ++idx) { 195 object_file_sp.reset( 196 create_callback(module_sp, data_sp, process_sp, header_addr)); 197 if (object_file_sp.get()) 198 return object_file_sp; 199 } 200 } 201 202 // We didn't find it, so clear our shared pointer in case it contains 203 // anything and return an empty shared pointer 204 object_file_sp.reset(); 205 return object_file_sp; 206 } 207 208 size_t ObjectFile::GetModuleSpecifications(const FileSpec &file, 209 lldb::offset_t file_offset, 210 lldb::offset_t file_size, 211 ModuleSpecList &specs) { 212 DataBufferSP data_sp = 213 FileSystem::Instance().CreateDataBuffer(file.GetPath(), 512, file_offset); 214 if (data_sp) { 215 if (file_size == 0) { 216 const lldb::offset_t actual_file_size = 217 FileSystem::Instance().GetByteSize(file); 218 if (actual_file_size > file_offset) 219 file_size = actual_file_size - file_offset; 220 } 221 return ObjectFile::GetModuleSpecifications(file, // file spec 222 data_sp, // data bytes 223 0, // data offset 224 file_offset, // file offset 225 file_size, // file length 226 specs); 227 } 228 return 0; 229 } 230 231 size_t ObjectFile::GetModuleSpecifications( 232 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 233 lldb::offset_t data_offset, lldb::offset_t file_offset, 234 lldb::offset_t file_size, lldb_private::ModuleSpecList &specs) { 235 const size_t initial_count = specs.GetSize(); 236 ObjectFileGetModuleSpecifications callback; 237 uint32_t i; 238 // Try the ObjectFile plug-ins 239 for (i = 0; 240 (callback = 241 PluginManager::GetObjectFileGetModuleSpecificationsCallbackAtIndex( 242 i)) != nullptr; 243 ++i) { 244 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 245 return specs.GetSize() - initial_count; 246 } 247 248 // Try the ObjectContainer plug-ins 249 for (i = 0; 250 (callback = PluginManager:: 251 GetObjectContainerGetModuleSpecificationsCallbackAtIndex(i)) != 252 nullptr; 253 ++i) { 254 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 255 return specs.GetSize() - initial_count; 256 } 257 return 0; 258 } 259 260 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 261 const FileSpec *file_spec_ptr, 262 lldb::offset_t file_offset, lldb::offset_t length, 263 const lldb::DataBufferSP &data_sp, 264 lldb::offset_t data_offset) 265 : ModuleChild(module_sp), 266 m_file(), // This file could be different from the original module's file 267 m_type(eTypeInvalid), m_strata(eStrataInvalid), 268 m_file_offset(file_offset), m_length(length), m_data(), m_process_wp(), 269 m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_up(), m_symtab_up(), 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 LLDB_LOGF(log, 277 "%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_process_wp(process_sp), m_memory_addr(header_addr), m_sections_up(), 291 m_symtab_up(), m_synthetic_symbol_idx(0) { 292 if (header_data_sp) 293 m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize()); 294 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 295 LLDB_LOGF(log, 296 "%p ObjectFile::ObjectFile() module = %p (%s), process = %p, " 297 "header_addr = 0x%" PRIx64, 298 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 299 module_sp->GetSpecificationDescription().c_str(), 300 static_cast<void *>(process_sp.get()), m_memory_addr); 301 } 302 303 ObjectFile::~ObjectFile() { 304 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 305 LLDB_LOGF(log, "%p ObjectFile::~ObjectFile ()\n", static_cast<void *>(this)); 306 } 307 308 bool ObjectFile::SetModulesArchitecture(const ArchSpec &new_arch) { 309 ModuleSP module_sp(GetModule()); 310 if (module_sp) 311 return module_sp->SetArchitecture(new_arch); 312 return false; 313 } 314 315 AddressClass ObjectFile::GetAddressClass(addr_t file_addr) { 316 Symtab *symtab = GetSymtab(); 317 if (symtab) { 318 Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); 319 if (symbol) { 320 if (symbol->ValueIsAddress()) { 321 const SectionSP section_sp(symbol->GetAddressRef().GetSection()); 322 if (section_sp) { 323 const SectionType section_type = section_sp->GetType(); 324 switch (section_type) { 325 case eSectionTypeInvalid: 326 return AddressClass::eUnknown; 327 case eSectionTypeCode: 328 return AddressClass::eCode; 329 case eSectionTypeContainer: 330 return AddressClass::eUnknown; 331 case eSectionTypeData: 332 case eSectionTypeDataCString: 333 case eSectionTypeDataCStringPointers: 334 case eSectionTypeDataSymbolAddress: 335 case eSectionTypeData4: 336 case eSectionTypeData8: 337 case eSectionTypeData16: 338 case eSectionTypeDataPointers: 339 case eSectionTypeZeroFill: 340 case eSectionTypeDataObjCMessageRefs: 341 case eSectionTypeDataObjCCFStrings: 342 case eSectionTypeGoSymtab: 343 return AddressClass::eData; 344 case eSectionTypeDebug: 345 case eSectionTypeDWARFDebugAbbrev: 346 case eSectionTypeDWARFDebugAbbrevDwo: 347 case eSectionTypeDWARFDebugAddr: 348 case eSectionTypeDWARFDebugAranges: 349 case eSectionTypeDWARFDebugCuIndex: 350 case eSectionTypeDWARFDebugFrame: 351 case eSectionTypeDWARFDebugInfo: 352 case eSectionTypeDWARFDebugInfoDwo: 353 case eSectionTypeDWARFDebugLine: 354 case eSectionTypeDWARFDebugLineStr: 355 case eSectionTypeDWARFDebugLoc: 356 case eSectionTypeDWARFDebugLocLists: 357 case eSectionTypeDWARFDebugMacInfo: 358 case eSectionTypeDWARFDebugMacro: 359 case eSectionTypeDWARFDebugNames: 360 case eSectionTypeDWARFDebugPubNames: 361 case eSectionTypeDWARFDebugPubTypes: 362 case eSectionTypeDWARFDebugRanges: 363 case eSectionTypeDWARFDebugRngLists: 364 case eSectionTypeDWARFDebugStr: 365 case eSectionTypeDWARFDebugStrDwo: 366 case eSectionTypeDWARFDebugStrOffsets: 367 case eSectionTypeDWARFDebugStrOffsetsDwo: 368 case eSectionTypeDWARFDebugTypes: 369 case eSectionTypeDWARFDebugTypesDwo: 370 case eSectionTypeDWARFAppleNames: 371 case eSectionTypeDWARFAppleTypes: 372 case eSectionTypeDWARFAppleNamespaces: 373 case eSectionTypeDWARFAppleObjC: 374 case eSectionTypeDWARFGNUDebugAltLink: 375 return AddressClass::eDebug; 376 case eSectionTypeEHFrame: 377 case eSectionTypeARMexidx: 378 case eSectionTypeARMextab: 379 case eSectionTypeCompactUnwind: 380 return AddressClass::eRuntime; 381 case eSectionTypeELFSymbolTable: 382 case eSectionTypeELFDynamicSymbols: 383 case eSectionTypeELFRelocationEntries: 384 case eSectionTypeELFDynamicLinkInfo: 385 case eSectionTypeOther: 386 return AddressClass::eUnknown; 387 case eSectionTypeAbsoluteAddress: 388 // In case of absolute sections decide the address class based on 389 // the symbol type because the section type isn't specify if it is 390 // a code or a data section. 391 break; 392 } 393 } 394 } 395 396 const SymbolType symbol_type = symbol->GetType(); 397 switch (symbol_type) { 398 case eSymbolTypeAny: 399 return AddressClass::eUnknown; 400 case eSymbolTypeAbsolute: 401 return AddressClass::eUnknown; 402 case eSymbolTypeCode: 403 return AddressClass::eCode; 404 case eSymbolTypeTrampoline: 405 return AddressClass::eCode; 406 case eSymbolTypeResolver: 407 return AddressClass::eCode; 408 case eSymbolTypeData: 409 return AddressClass::eData; 410 case eSymbolTypeRuntime: 411 return AddressClass::eRuntime; 412 case eSymbolTypeException: 413 return AddressClass::eRuntime; 414 case eSymbolTypeSourceFile: 415 return AddressClass::eDebug; 416 case eSymbolTypeHeaderFile: 417 return AddressClass::eDebug; 418 case eSymbolTypeObjectFile: 419 return AddressClass::eDebug; 420 case eSymbolTypeCommonBlock: 421 return AddressClass::eDebug; 422 case eSymbolTypeBlock: 423 return AddressClass::eDebug; 424 case eSymbolTypeLocal: 425 return AddressClass::eData; 426 case eSymbolTypeParam: 427 return AddressClass::eData; 428 case eSymbolTypeVariable: 429 return AddressClass::eData; 430 case eSymbolTypeVariableType: 431 return AddressClass::eDebug; 432 case eSymbolTypeLineEntry: 433 return AddressClass::eDebug; 434 case eSymbolTypeLineHeader: 435 return AddressClass::eDebug; 436 case eSymbolTypeScopeBegin: 437 return AddressClass::eDebug; 438 case eSymbolTypeScopeEnd: 439 return AddressClass::eDebug; 440 case eSymbolTypeAdditional: 441 return AddressClass::eUnknown; 442 case eSymbolTypeCompiler: 443 return AddressClass::eDebug; 444 case eSymbolTypeInstrumentation: 445 return AddressClass::eDebug; 446 case eSymbolTypeUndefined: 447 return AddressClass::eUnknown; 448 case eSymbolTypeObjCClass: 449 return AddressClass::eRuntime; 450 case eSymbolTypeObjCMetaClass: 451 return AddressClass::eRuntime; 452 case eSymbolTypeObjCIVar: 453 return AddressClass::eRuntime; 454 case eSymbolTypeReExported: 455 return AddressClass::eRuntime; 456 } 457 } 458 } 459 return AddressClass::eUnknown; 460 } 461 462 DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp, 463 lldb::addr_t addr, size_t byte_size) { 464 DataBufferSP data_sp; 465 if (process_sp) { 466 std::unique_ptr<DataBufferHeap> data_up(new DataBufferHeap(byte_size, 0)); 467 Status error; 468 const size_t bytes_read = process_sp->ReadMemory( 469 addr, data_up->GetBytes(), data_up->GetByteSize(), error); 470 if (bytes_read == byte_size) 471 data_sp.reset(data_up.release()); 472 } 473 return data_sp; 474 } 475 476 size_t ObjectFile::GetData(lldb::offset_t offset, size_t length, 477 DataExtractor &data) const { 478 // The entire file has already been mmap'ed into m_data, so just copy from 479 // there as the back mmap buffer will be shared with shared pointers. 480 return data.SetData(m_data, offset, length); 481 } 482 483 size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length, 484 void *dst) const { 485 // The entire file has already been mmap'ed into m_data, so just copy from 486 // there Note that the data remains in target byte order. 487 return m_data.CopyData(offset, length, dst); 488 } 489 490 size_t ObjectFile::ReadSectionData(Section *section, 491 lldb::offset_t section_offset, void *dst, 492 size_t dst_len) { 493 assert(section); 494 section_offset *= section->GetTargetByteSize(); 495 496 // If some other objectfile owns this data, pass this to them. 497 if (section->GetObjectFile() != this) 498 return section->GetObjectFile()->ReadSectionData(section, section_offset, 499 dst, dst_len); 500 501 if (IsInMemory()) { 502 ProcessSP process_sp(m_process_wp.lock()); 503 if (process_sp) { 504 Status error; 505 const addr_t base_load_addr = 506 section->GetLoadBaseAddress(&process_sp->GetTarget()); 507 if (base_load_addr != LLDB_INVALID_ADDRESS) 508 return process_sp->ReadMemory(base_load_addr + section_offset, dst, 509 dst_len, error); 510 } 511 } else { 512 if (!section->IsRelocated()) 513 RelocateSection(section); 514 515 const lldb::offset_t section_file_size = section->GetFileSize(); 516 if (section_offset < section_file_size) { 517 const size_t section_bytes_left = section_file_size - section_offset; 518 size_t section_dst_len = dst_len; 519 if (section_dst_len > section_bytes_left) 520 section_dst_len = section_bytes_left; 521 return CopyData(section->GetFileOffset() + section_offset, 522 section_dst_len, dst); 523 } else { 524 if (section->GetType() == eSectionTypeZeroFill) { 525 const uint64_t section_size = section->GetByteSize(); 526 const uint64_t section_bytes_left = section_size - section_offset; 527 uint64_t section_dst_len = dst_len; 528 if (section_dst_len > section_bytes_left) 529 section_dst_len = section_bytes_left; 530 memset(dst, 0, section_dst_len); 531 return section_dst_len; 532 } 533 } 534 } 535 return 0; 536 } 537 538 // Get the section data the file on disk 539 size_t ObjectFile::ReadSectionData(Section *section, 540 DataExtractor §ion_data) { 541 // If some other objectfile owns this data, pass this to them. 542 if (section->GetObjectFile() != this) 543 return section->GetObjectFile()->ReadSectionData(section, section_data); 544 545 if (IsInMemory()) { 546 ProcessSP process_sp(m_process_wp.lock()); 547 if (process_sp) { 548 const addr_t base_load_addr = 549 section->GetLoadBaseAddress(&process_sp->GetTarget()); 550 if (base_load_addr != LLDB_INVALID_ADDRESS) { 551 DataBufferSP data_sp( 552 ReadMemory(process_sp, base_load_addr, section->GetByteSize())); 553 if (data_sp) { 554 section_data.SetData(data_sp, 0, data_sp->GetByteSize()); 555 section_data.SetByteOrder(process_sp->GetByteOrder()); 556 section_data.SetAddressByteSize(process_sp->GetAddressByteSize()); 557 return section_data.GetByteSize(); 558 } 559 } 560 } 561 return GetData(section->GetFileOffset(), section->GetFileSize(), 562 section_data); 563 } else { 564 // The object file now contains a full mmap'ed copy of the object file 565 // data, so just use this 566 if (!section->IsRelocated()) 567 RelocateSection(section); 568 569 return GetData(section->GetFileOffset(), section->GetFileSize(), 570 section_data); 571 } 572 } 573 574 bool ObjectFile::SplitArchivePathWithObject(const char *path_with_object, 575 FileSpec &archive_file, 576 ConstString &archive_object, 577 bool must_exist) { 578 llvm::SmallVector<llvm::StringRef, 3> matches; 579 RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$")); 580 if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object), 581 &matches)) { 582 std::string path = matches[1].str(); 583 std::string obj = matches[2].str(); 584 archive_file.SetFile(path, FileSpec::Style::native); 585 archive_object.SetCString(obj.c_str()); 586 return !(must_exist && !FileSystem::Instance().Exists(archive_file)); 587 } 588 return false; 589 } 590 591 void ObjectFile::ClearSymtab() { 592 ModuleSP module_sp(GetModule()); 593 if (module_sp) { 594 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 595 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 596 LLDB_LOGF(log, "%p ObjectFile::ClearSymtab () symtab = %p", 597 static_cast<void *>(this), 598 static_cast<void *>(m_symtab_up.get())); 599 m_symtab_up.reset(); 600 } 601 } 602 603 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 604 if (m_sections_up == nullptr) { 605 if (update_module_section_list) { 606 ModuleSP module_sp(GetModule()); 607 if (module_sp) { 608 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 609 CreateSections(*module_sp->GetUnifiedSectionList()); 610 } 611 } else { 612 SectionList unified_section_list; 613 CreateSections(unified_section_list); 614 } 615 } 616 return m_sections_up.get(); 617 } 618 619 lldb::SymbolType 620 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 621 lldb::SymbolType symbol_type_hint) { 622 if (!name.empty()) { 623 if (name.startswith("_OBJC_")) { 624 // ObjC 625 if (name.startswith("_OBJC_CLASS_$_")) 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 void ObjectFile::RelocateSection(lldb_private::Section *section) 675 { 676 } 677 678 DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size, 679 uint64_t Offset) { 680 return FileSystem::Instance().CreateDataBuffer(file.GetPath(), Size, Offset); 681 } 682 683 void llvm::format_provider<ObjectFile::Type>::format( 684 const ObjectFile::Type &type, raw_ostream &OS, StringRef Style) { 685 switch (type) { 686 case ObjectFile::eTypeInvalid: 687 OS << "invalid"; 688 break; 689 case ObjectFile::eTypeCoreFile: 690 OS << "core file"; 691 break; 692 case ObjectFile::eTypeExecutable: 693 OS << "executable"; 694 break; 695 case ObjectFile::eTypeDebugInfo: 696 OS << "debug info"; 697 break; 698 case ObjectFile::eTypeDynamicLinker: 699 OS << "dynamic linker"; 700 break; 701 case ObjectFile::eTypeObjectFile: 702 OS << "object file"; 703 break; 704 case ObjectFile::eTypeSharedLibrary: 705 OS << "shared library"; 706 break; 707 case ObjectFile::eTypeStubLibrary: 708 OS << "stub library"; 709 break; 710 case ObjectFile::eTypeJIT: 711 OS << "jit"; 712 break; 713 case ObjectFile::eTypeUnknown: 714 OS << "unknown"; 715 break; 716 } 717 } 718 719 void llvm::format_provider<ObjectFile::Strata>::format( 720 const ObjectFile::Strata &strata, raw_ostream &OS, StringRef Style) { 721 switch (strata) { 722 case ObjectFile::eStrataInvalid: 723 OS << "invalid"; 724 break; 725 case ObjectFile::eStrataUnknown: 726 OS << "unknown"; 727 break; 728 case ObjectFile::eStrataUser: 729 OS << "user"; 730 break; 731 case ObjectFile::eStrataKernel: 732 OS << "kernel"; 733 break; 734 case ObjectFile::eStrataRawImage: 735 OS << "raw image"; 736 break; 737 case ObjectFile::eStrataJIT: 738 OS << "jit"; 739 break; 740 } 741 } 742