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 ObjectFileSP 30 ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file, 31 lldb::offset_t file_offset, lldb::offset_t file_size, 32 DataBufferSP &data_sp, lldb::offset_t &data_offset) { 33 ObjectFileSP object_file_sp; 34 35 if (module_sp) { 36 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 37 Timer scoped_timer( 38 func_cat, 39 "ObjectFile::FindPlugin (module = %s, file = %p, file_offset = " 40 "0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")", 41 module_sp->GetFileSpec().GetPath().c_str(), 42 static_cast<const void *>(file), static_cast<uint64_t>(file_offset), 43 static_cast<uint64_t>(file_size)); 44 if (file) { 45 FileSpec archive_file; 46 ObjectContainerCreateInstance create_object_container_callback; 47 48 const bool file_exists = FileSystem::Instance().Exists(*file); 49 if (!data_sp) { 50 // We have an object name which most likely means we have a .o file in 51 // a static archive (.a file). Try and see if we have a cached archive 52 // first without reading any data first 53 if (file_exists && module_sp->GetObjectName()) { 54 for (uint32_t idx = 0; 55 (create_object_container_callback = 56 PluginManager::GetObjectContainerCreateCallbackAtIndex( 57 idx)) != nullptr; 58 ++idx) { 59 std::unique_ptr<ObjectContainer> object_container_up( 60 create_object_container_callback(module_sp, data_sp, 61 data_offset, file, file_offset, 62 file_size)); 63 64 if (object_container_up) 65 object_file_sp = object_container_up->GetObjectFile(file); 66 67 if (object_file_sp.get()) 68 return object_file_sp; 69 } 70 } 71 // Ok, we didn't find any containers that have a named object, now lets 72 // read the first 512 bytes from the file so the object file and object 73 // container plug-ins can use these bytes to see if they can parse this 74 // file. 75 if (file_size > 0) { 76 data_sp = FileSystem::Instance().CreateDataBuffer(file->GetPath(), 77 512, file_offset); 78 data_offset = 0; 79 } 80 } 81 82 if (!data_sp || data_sp->GetByteSize() == 0) { 83 // Check for archive file with format "/path/to/archive.a(object.o)" 84 char path_with_object[PATH_MAX * 2]; 85 module_sp->GetFileSpec().GetPath(path_with_object, 86 sizeof(path_with_object)); 87 88 ConstString archive_object; 89 const bool must_exist = true; 90 if (ObjectFile::SplitArchivePathWithObject( 91 path_with_object, archive_file, archive_object, must_exist)) { 92 file_size = FileSystem::Instance().GetByteSize(archive_file); 93 if (file_size > 0) { 94 file = &archive_file; 95 module_sp->SetFileSpecAndObjectName(archive_file, archive_object); 96 // Check if this is a object container by iterating through all 97 // object container plugin instances and then trying to get an 98 // object file from the container plugins since we had a name. 99 // Also, don't read 100 // ANY data in case there is data cached in the container plug-ins 101 // (like BSD archives caching the contained objects within an 102 // file). 103 for (uint32_t idx = 0; 104 (create_object_container_callback = 105 PluginManager::GetObjectContainerCreateCallbackAtIndex( 106 idx)) != nullptr; 107 ++idx) { 108 std::unique_ptr<ObjectContainer> object_container_up( 109 create_object_container_callback(module_sp, data_sp, 110 data_offset, file, 111 file_offset, file_size)); 112 113 if (object_container_up) 114 object_file_sp = object_container_up->GetObjectFile(file); 115 116 if (object_file_sp.get()) 117 return object_file_sp; 118 } 119 // We failed to find any cached object files in the container plug- 120 // ins, so lets read the first 512 bytes and try again below... 121 data_sp = FileSystem::Instance().CreateDataBuffer( 122 archive_file.GetPath(), 512, file_offset); 123 } 124 } 125 } 126 127 if (data_sp && data_sp->GetByteSize() > 0) { 128 // Check if this is a normal object file by iterating through all 129 // object file plugin instances. 130 ObjectFileCreateInstance create_object_file_callback; 131 for (uint32_t idx = 0; 132 (create_object_file_callback = 133 PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != 134 nullptr; 135 ++idx) { 136 object_file_sp.reset(create_object_file_callback( 137 module_sp, data_sp, data_offset, file, file_offset, file_size)); 138 if (object_file_sp.get()) 139 return object_file_sp; 140 } 141 142 // Check if this is a object container by iterating through all object 143 // container plugin instances and then trying to get an object file 144 // from the container. 145 for (uint32_t idx = 0; 146 (create_object_container_callback = 147 PluginManager::GetObjectContainerCreateCallbackAtIndex( 148 idx)) != nullptr; 149 ++idx) { 150 std::unique_ptr<ObjectContainer> object_container_up( 151 create_object_container_callback(module_sp, data_sp, data_offset, 152 file, file_offset, file_size)); 153 154 if (object_container_up) 155 object_file_sp = object_container_up->GetObjectFile(file); 156 157 if (object_file_sp.get()) 158 return object_file_sp; 159 } 160 } 161 } 162 } 163 // We didn't find it, so clear our shared pointer in case it contains 164 // anything and return an empty shared pointer 165 object_file_sp.reset(); 166 return object_file_sp; 167 } 168 169 ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, 170 const ProcessSP &process_sp, 171 lldb::addr_t header_addr, 172 DataBufferSP &data_sp) { 173 ObjectFileSP object_file_sp; 174 175 if (module_sp) { 176 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 177 Timer scoped_timer(func_cat, 178 "ObjectFile::FindPlugin (module = " 179 "%s, process = %p, header_addr = " 180 "0x%" PRIx64 ")", 181 module_sp->GetFileSpec().GetPath().c_str(), 182 static_cast<void *>(process_sp.get()), header_addr); 183 uint32_t idx; 184 185 // Check if this is a normal object file by iterating through all object 186 // file plugin instances. 187 ObjectFileCreateMemoryInstance create_callback; 188 for (idx = 0; 189 (create_callback = 190 PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) != 191 nullptr; 192 ++idx) { 193 object_file_sp.reset( 194 create_callback(module_sp, data_sp, process_sp, header_addr)); 195 if (object_file_sp.get()) 196 return object_file_sp; 197 } 198 } 199 200 // We didn't find it, so clear our shared pointer in case it contains 201 // anything and return an empty shared pointer 202 object_file_sp.reset(); 203 return object_file_sp; 204 } 205 206 size_t ObjectFile::GetModuleSpecifications(const FileSpec &file, 207 lldb::offset_t file_offset, 208 lldb::offset_t file_size, 209 ModuleSpecList &specs) { 210 DataBufferSP data_sp = 211 FileSystem::Instance().CreateDataBuffer(file.GetPath(), 512, file_offset); 212 if (data_sp) { 213 if (file_size == 0) { 214 const lldb::offset_t actual_file_size = 215 FileSystem::Instance().GetByteSize(file); 216 if (actual_file_size > file_offset) 217 file_size = actual_file_size - file_offset; 218 } 219 return ObjectFile::GetModuleSpecifications(file, // file spec 220 data_sp, // data bytes 221 0, // data offset 222 file_offset, // file offset 223 file_size, // file length 224 specs); 225 } 226 return 0; 227 } 228 229 size_t ObjectFile::GetModuleSpecifications( 230 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 231 lldb::offset_t data_offset, lldb::offset_t file_offset, 232 lldb::offset_t file_size, lldb_private::ModuleSpecList &specs) { 233 const size_t initial_count = specs.GetSize(); 234 ObjectFileGetModuleSpecifications callback; 235 uint32_t i; 236 // Try the ObjectFile plug-ins 237 for (i = 0; 238 (callback = 239 PluginManager::GetObjectFileGetModuleSpecificationsCallbackAtIndex( 240 i)) != nullptr; 241 ++i) { 242 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 243 return specs.GetSize() - initial_count; 244 } 245 246 // Try the ObjectContainer plug-ins 247 for (i = 0; 248 (callback = PluginManager:: 249 GetObjectContainerGetModuleSpecificationsCallbackAtIndex(i)) != 250 nullptr; 251 ++i) { 252 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 253 return specs.GetSize() - initial_count; 254 } 255 return 0; 256 } 257 258 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 259 const FileSpec *file_spec_ptr, 260 lldb::offset_t file_offset, lldb::offset_t length, 261 const lldb::DataBufferSP &data_sp, 262 lldb::offset_t data_offset) 263 : ModuleChild(module_sp), 264 m_file(), // This file could be different from the original module's file 265 m_type(eTypeInvalid), m_strata(eStrataInvalid), 266 m_file_offset(file_offset), m_length(length), m_data(), m_process_wp(), 267 m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_up(), m_symtab_up(), 268 m_synthetic_symbol_idx(0) { 269 if (file_spec_ptr) 270 m_file = *file_spec_ptr; 271 if (data_sp) 272 m_data.SetData(data_sp, data_offset, length); 273 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 274 if (log) 275 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), file = %s, " 276 "file_offset = 0x%8.8" PRIx64 ", size = %" PRIu64, 277 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 278 module_sp->GetSpecificationDescription().c_str(), 279 m_file ? m_file.GetPath().c_str() : "<NULL>", m_file_offset, 280 m_length); 281 } 282 283 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 284 const ProcessSP &process_sp, lldb::addr_t header_addr, 285 DataBufferSP &header_data_sp) 286 : ModuleChild(module_sp), m_file(), m_type(eTypeInvalid), 287 m_strata(eStrataInvalid), m_file_offset(0), m_length(0), m_data(), 288 m_process_wp(process_sp), m_memory_addr(header_addr), m_sections_up(), 289 m_symtab_up(), m_synthetic_symbol_idx(0) { 290 if (header_data_sp) 291 m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize()); 292 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 293 if (log) 294 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), process = %p, " 295 "header_addr = 0x%" PRIx64, 296 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 297 module_sp->GetSpecificationDescription().c_str(), 298 static_cast<void *>(process_sp.get()), m_memory_addr); 299 } 300 301 ObjectFile::~ObjectFile() { 302 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 303 if (log) 304 log->Printf("%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(const char *path_with_object, 574 FileSpec &archive_file, 575 ConstString &archive_object, 576 bool must_exist) { 577 RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$")); 578 RegularExpression::Match regex_match(2); 579 if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object), 580 ®ex_match)) { 581 std::string path; 582 std::string obj; 583 if (regex_match.GetMatchAtIndex(path_with_object, 1, path) && 584 regex_match.GetMatchAtIndex(path_with_object, 2, obj)) { 585 archive_file.SetFile(path, FileSpec::Style::native); 586 archive_object.SetCString(obj.c_str()); 587 return !(must_exist && !FileSystem::Instance().Exists(archive_file)); 588 } 589 } 590 return false; 591 } 592 593 void ObjectFile::ClearSymtab() { 594 ModuleSP module_sp(GetModule()); 595 if (module_sp) { 596 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 597 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 598 if (log) 599 log->Printf("%p ObjectFile::ClearSymtab () symtab = %p", 600 static_cast<void *>(this), 601 static_cast<void *>(m_symtab_up.get())); 602 m_symtab_up.reset(); 603 } 604 } 605 606 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 607 if (m_sections_up == nullptr) { 608 if (update_module_section_list) { 609 ModuleSP module_sp(GetModule()); 610 if (module_sp) { 611 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 612 CreateSections(*module_sp->GetUnifiedSectionList()); 613 } 614 } else { 615 SectionList unified_section_list; 616 CreateSections(unified_section_list); 617 } 618 } 619 return m_sections_up.get(); 620 } 621 622 lldb::SymbolType 623 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 624 lldb::SymbolType symbol_type_hint) { 625 if (!name.empty()) { 626 if (name.startswith("_OBJC_")) { 627 // ObjC 628 if (name.startswith("_OBJC_CLASS_$_")) 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 FileSystem::Instance().CreateDataBuffer(file.GetPath(), Size, Offset); 684 } 685 686 void llvm::format_provider<ObjectFile::Type>::format( 687 const ObjectFile::Type &type, raw_ostream &OS, StringRef Style) { 688 switch (type) { 689 case ObjectFile::eTypeInvalid: 690 OS << "invalid"; 691 break; 692 case ObjectFile::eTypeCoreFile: 693 OS << "core file"; 694 break; 695 case ObjectFile::eTypeExecutable: 696 OS << "executable"; 697 break; 698 case ObjectFile::eTypeDebugInfo: 699 OS << "debug info"; 700 break; 701 case ObjectFile::eTypeDynamicLinker: 702 OS << "dynamic linker"; 703 break; 704 case ObjectFile::eTypeObjectFile: 705 OS << "object file"; 706 break; 707 case ObjectFile::eTypeSharedLibrary: 708 OS << "shared library"; 709 break; 710 case ObjectFile::eTypeStubLibrary: 711 OS << "stub library"; 712 break; 713 case ObjectFile::eTypeJIT: 714 OS << "jit"; 715 break; 716 case ObjectFile::eTypeUnknown: 717 OS << "unknown"; 718 break; 719 } 720 } 721 722 void llvm::format_provider<ObjectFile::Strata>::format( 723 const ObjectFile::Strata &strata, raw_ostream &OS, StringRef Style) { 724 switch (strata) { 725 case ObjectFile::eStrataInvalid: 726 OS << "invalid"; 727 break; 728 case ObjectFile::eStrataUnknown: 729 OS << "unknown"; 730 break; 731 case ObjectFile::eStrataUser: 732 OS << "user"; 733 break; 734 case ObjectFile::eStrataKernel: 735 OS << "kernel"; 736 break; 737 case ObjectFile::eStrataRawImage: 738 OS << "raw image"; 739 break; 740 case ObjectFile::eStrataJIT: 741 OS << "jit"; 742 break; 743 } 744 } 745