1 //===-- SymbolFileDWARF.h --------------------------------------*- 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 #ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H 10 #define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H 11 12 #include <list> 13 #include <map> 14 #include <mutex> 15 #include <optional> 16 #include <unordered_map> 17 #include <vector> 18 19 #include "llvm/ADT/DenseMap.h" 20 #include "llvm/ADT/SetVector.h" 21 #include "llvm/Support/Threading.h" 22 23 #include "lldb/Core/UniqueCStringMap.h" 24 #include "lldb/Core/dwarf.h" 25 #include "lldb/Expression/DWARFExpressionList.h" 26 #include "lldb/Symbol/DebugMacros.h" 27 #include "lldb/Symbol/SymbolContext.h" 28 #include "lldb/Symbol/SymbolFile.h" 29 #include "lldb/Target/Statistics.h" 30 #include "lldb/Utility/ConstString.h" 31 #include "lldb/Utility/Flags.h" 32 #include "lldb/Utility/RangeMap.h" 33 #include "lldb/lldb-private.h" 34 35 #include "DWARFContext.h" 36 #include "DWARFDataExtractor.h" 37 #include "DWARFDefines.h" 38 #include "DWARFIndex.h" 39 #include "UniqueDWARFASTType.h" 40 41 // Forward Declarations for this DWARF plugin 42 class DebugMapModule; 43 class DWARFCompileUnit; 44 class DWARFDebugAbbrev; 45 class DWARFDebugAranges; 46 class DWARFDebugInfo; 47 class DWARFDebugInfoEntry; 48 class DWARFDebugLine; 49 class DWARFDebugRanges; 50 class DWARFDeclContext; 51 class DWARFFormValue; 52 class DWARFTypeUnit; 53 class SymbolFileDWARFDebugMap; 54 class SymbolFileDWARFDwo; 55 class SymbolFileDWARFDwp; 56 class UserID; 57 58 #define DIE_IS_BEING_PARSED ((lldb_private::Type *)1) 59 60 class SymbolFileDWARF : public lldb_private::SymbolFileCommon { 61 /// LLVM RTTI support. 62 static char ID; 63 64 public: 65 /// LLVM RTTI support. 66 /// \{ 67 bool isA(const void *ClassID) const override { 68 return ClassID == &ID || SymbolFileCommon::isA(ClassID); 69 } 70 static bool classof(const SymbolFile *obj) { return obj->isA(&ID); } 71 /// \} 72 73 friend class SymbolFileDWARFDebugMap; 74 friend class SymbolFileDWARFDwo; 75 friend class DebugMapModule; 76 friend class DWARFCompileUnit; 77 friend class DWARFDIE; 78 friend class DWARFASTParserClang; 79 80 // Static Functions 81 static void Initialize(); 82 83 static void Terminate(); 84 85 static void DebuggerInitialize(lldb_private::Debugger &debugger); 86 87 static llvm::StringRef GetPluginNameStatic() { return "dwarf"; } 88 89 static llvm::StringRef GetPluginDescriptionStatic(); 90 91 static lldb_private::SymbolFile * 92 CreateInstance(lldb::ObjectFileSP objfile_sp); 93 94 // Constructors and Destructors 95 96 SymbolFileDWARF(lldb::ObjectFileSP objfile_sp, 97 lldb_private::SectionList *dwo_section_list); 98 99 ~SymbolFileDWARF() override; 100 101 uint32_t CalculateAbilities() override; 102 103 void InitializeObject() override; 104 105 // Compile Unit function calls 106 107 lldb::LanguageType 108 ParseLanguage(lldb_private::CompileUnit &comp_unit) override; 109 110 lldb_private::XcodeSDK 111 ParseXcodeSDK(lldb_private::CompileUnit &comp_unit) override; 112 113 size_t ParseFunctions(lldb_private::CompileUnit &comp_unit) override; 114 115 bool ParseLineTable(lldb_private::CompileUnit &comp_unit) override; 116 117 bool ParseDebugMacros(lldb_private::CompileUnit &comp_unit) override; 118 119 bool ForEachExternalModule( 120 lldb_private::CompileUnit &, llvm::DenseSet<lldb_private::SymbolFile *> &, 121 llvm::function_ref<bool(lldb_private::Module &)>) override; 122 123 bool ParseSupportFiles(lldb_private::CompileUnit &comp_unit, 124 lldb_private::FileSpecList &support_files) override; 125 126 bool ParseIsOptimized(lldb_private::CompileUnit &comp_unit) override; 127 128 size_t ParseTypes(lldb_private::CompileUnit &comp_unit) override; 129 130 bool ParseImportedModules( 131 const lldb_private::SymbolContext &sc, 132 std::vector<lldb_private::SourceModule> &imported_modules) override; 133 134 size_t ParseBlocksRecursive(lldb_private::Function &func) override; 135 136 size_t 137 ParseVariablesForContext(const lldb_private::SymbolContext &sc) override; 138 139 lldb_private::Type *ResolveTypeUID(lldb::user_id_t type_uid) override; 140 std::optional<ArrayInfo> GetDynamicArrayInfoForUID( 141 lldb::user_id_t type_uid, 142 const lldb_private::ExecutionContext *exe_ctx) override; 143 144 bool CompleteType(lldb_private::CompilerType &compiler_type) override; 145 146 lldb_private::Type *ResolveType(const DWARFDIE &die, 147 bool assert_not_being_parsed = true, 148 bool resolve_function_context = false); 149 150 lldb_private::CompilerDecl GetDeclForUID(lldb::user_id_t uid) override; 151 152 lldb_private::CompilerDeclContext 153 GetDeclContextForUID(lldb::user_id_t uid) override; 154 155 lldb_private::CompilerDeclContext 156 GetDeclContextContainingUID(lldb::user_id_t uid) override; 157 158 void 159 ParseDeclsForContext(lldb_private::CompilerDeclContext decl_ctx) override; 160 161 uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr, 162 lldb::SymbolContextItem resolve_scope, 163 lldb_private::SymbolContext &sc) override; 164 165 lldb_private::Status 166 CalculateFrameVariableError(lldb_private::StackFrame &frame) override; 167 168 uint32_t ResolveSymbolContext( 169 const lldb_private::SourceLocationSpec &src_location_spec, 170 lldb::SymbolContextItem resolve_scope, 171 lldb_private::SymbolContextList &sc_list) override; 172 173 void 174 FindGlobalVariables(lldb_private::ConstString name, 175 const lldb_private::CompilerDeclContext &parent_decl_ctx, 176 uint32_t max_matches, 177 lldb_private::VariableList &variables) override; 178 179 void FindGlobalVariables(const lldb_private::RegularExpression ®ex, 180 uint32_t max_matches, 181 lldb_private::VariableList &variables) override; 182 183 void FindFunctions(const lldb_private::Module::LookupInfo &lookup_info, 184 const lldb_private::CompilerDeclContext &parent_decl_ctx, 185 bool include_inlines, 186 lldb_private::SymbolContextList &sc_list) override; 187 188 void FindFunctions(const lldb_private::RegularExpression ®ex, 189 bool include_inlines, 190 lldb_private::SymbolContextList &sc_list) override; 191 192 void GetMangledNamesForFunction( 193 const std::string &scope_qualified_name, 194 std::vector<lldb_private::ConstString> &mangled_names) override; 195 196 void 197 FindTypes(lldb_private::ConstString name, 198 const lldb_private::CompilerDeclContext &parent_decl_ctx, 199 uint32_t max_matches, 200 llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, 201 lldb_private::TypeMap &types) override; 202 203 void FindTypes(llvm::ArrayRef<lldb_private::CompilerContext> pattern, 204 lldb_private::LanguageSet languages, 205 llvm::DenseSet<SymbolFile *> &searched_symbol_files, 206 lldb_private::TypeMap &types) override; 207 208 void GetTypes(lldb_private::SymbolContextScope *sc_scope, 209 lldb::TypeClass type_mask, 210 lldb_private::TypeList &type_list) override; 211 212 llvm::Expected<lldb::TypeSystemSP> 213 GetTypeSystemForLanguage(lldb::LanguageType language) override; 214 215 lldb_private::CompilerDeclContext 216 FindNamespace(lldb_private::ConstString name, 217 const lldb_private::CompilerDeclContext &parent_decl_ctx, 218 bool only_root_namespaces) override; 219 220 void PreloadSymbols() override; 221 222 std::recursive_mutex &GetModuleMutex() const override; 223 224 // PluginInterface protocol 225 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } 226 227 DWARFDebugAbbrev *DebugAbbrev(); 228 229 DWARFDebugInfo &DebugInfo(); 230 231 DWARFDebugRanges *GetDebugRanges(); 232 233 static bool SupportedVersion(uint16_t version); 234 235 DWARFDIE 236 GetDeclContextDIEContainingDIE(const DWARFDIE &die); 237 238 bool 239 HasForwardDeclForClangType(const lldb_private::CompilerType &compiler_type); 240 241 lldb_private::CompileUnit * 242 GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu); 243 244 virtual void GetObjCMethods(lldb_private::ConstString class_name, 245 llvm::function_ref<bool(DWARFDIE die)> callback); 246 247 bool Supports_DW_AT_APPLE_objc_complete_type(DWARFUnit *cu); 248 249 lldb_private::DebugMacrosSP ParseDebugMacros(lldb::offset_t *offset); 250 251 static DWARFDIE GetParentSymbolContextDIE(const DWARFDIE &die); 252 253 lldb::ModuleSP GetExternalModule(lldb_private::ConstString name); 254 255 typedef std::map<lldb_private::ConstString, lldb::ModuleSP> 256 ExternalTypeModuleMap; 257 258 /// Return the list of Clang modules imported by this SymbolFile. 259 const ExternalTypeModuleMap &getExternalTypeModules() const { 260 return m_external_type_modules; 261 } 262 263 virtual DWARFDIE GetDIE(const DIERef &die_ref); 264 265 DWARFDIE GetDIE(lldb::user_id_t uid); 266 267 std::shared_ptr<SymbolFileDWARFDwo> 268 GetDwoSymbolFileForCompileUnit(DWARFUnit &dwarf_cu, 269 const DWARFDebugInfoEntry &cu_die); 270 271 /// If this is a DWARF object with a single CU, return its DW_AT_dwo_id. 272 std::optional<uint64_t> GetDWOId(); 273 274 static bool 275 DIEInDeclContext(const lldb_private::CompilerDeclContext &parent_decl_ctx, 276 const DWARFDIE &die, bool only_root_namespaces = false); 277 278 std::vector<std::unique_ptr<lldb_private::CallEdge>> 279 ParseCallEdgesInFunction(lldb_private::UserID func_id) override; 280 281 void Dump(lldb_private::Stream &s) override; 282 283 void DumpClangAST(lldb_private::Stream &s) override; 284 285 lldb_private::DWARFContext &GetDWARFContext() { return m_context; } 286 287 const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile(); 288 289 lldb_private::FileSpec GetFile(DWARFUnit &unit, size_t file_idx); 290 291 static llvm::Expected<lldb::TypeSystemSP> GetTypeSystem(DWARFUnit &unit); 292 293 static DWARFASTParser *GetDWARFParser(DWARFUnit &unit); 294 295 // CompilerDecl related functions 296 297 static lldb_private::CompilerDecl GetDecl(const DWARFDIE &die); 298 299 static lldb_private::CompilerDeclContext GetDeclContext(const DWARFDIE &die); 300 301 static lldb_private::CompilerDeclContext 302 GetContainingDeclContext(const DWARFDIE &die); 303 304 static DWARFDeclContext GetDWARFDeclContext(const DWARFDIE &die); 305 306 static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val); 307 308 static lldb::LanguageType GetLanguage(DWARFUnit &unit); 309 /// Same as GetLanguage() but reports all C++ versions as C++ (no version). 310 static lldb::LanguageType GetLanguageFamily(DWARFUnit &unit); 311 312 lldb_private::StatsDuration::Duration GetDebugInfoParseTime() override { 313 return m_parse_time; 314 } 315 lldb_private::StatsDuration::Duration GetDebugInfoIndexTime() override; 316 317 lldb_private::StatsDuration &GetDebugInfoParseTimeRef() { 318 return m_parse_time; 319 } 320 321 virtual lldb::offset_t 322 GetVendorDWARFOpcodeSize(const lldb_private::DataExtractor &data, 323 const lldb::offset_t data_offset, 324 const uint8_t op) const { 325 return LLDB_INVALID_OFFSET; 326 } 327 328 virtual bool 329 ParseVendorDWARFOpcode(uint8_t op, const lldb_private::DataExtractor &opcodes, 330 lldb::offset_t &offset, 331 std::vector<lldb_private::Value> &stack) const { 332 return false; 333 } 334 335 lldb_private::ConstString ConstructFunctionDemangledName(const DWARFDIE &die); 336 337 std::optional<uint64_t> GetFileIndex() const { return m_file_index; } 338 void SetFileIndex(std::optional<uint64_t> file_index) { 339 m_file_index = file_index; 340 } 341 342 protected: 343 typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb_private::Type *> 344 DIEToTypePtr; 345 typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::VariableSP> 346 DIEToVariableSP; 347 typedef llvm::DenseMap<const DWARFDebugInfoEntry *, 348 lldb::opaque_compiler_type_t> 349 DIEToClangType; 350 typedef llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> ClangTypeToDIE; 351 352 SymbolFileDWARF(const SymbolFileDWARF &) = delete; 353 const SymbolFileDWARF &operator=(const SymbolFileDWARF &) = delete; 354 355 virtual void LoadSectionData(lldb::SectionType sect_type, 356 lldb_private::DWARFDataExtractor &data); 357 358 bool DeclContextMatchesThisSymbolFile( 359 const lldb_private::CompilerDeclContext &decl_ctx); 360 361 uint32_t CalculateNumCompileUnits() override; 362 363 lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override; 364 365 lldb_private::TypeList &GetTypeList() override; 366 367 lldb::CompUnitSP ParseCompileUnit(DWARFCompileUnit &dwarf_cu); 368 369 virtual DWARFCompileUnit * 370 GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit); 371 372 DWARFUnit *GetNextUnparsedDWARFCompileUnit(DWARFUnit *prev_cu); 373 374 bool GetFunction(const DWARFDIE &die, lldb_private::SymbolContext &sc); 375 376 lldb_private::Function *ParseFunction(lldb_private::CompileUnit &comp_unit, 377 const DWARFDIE &die); 378 379 size_t ParseBlocksRecursive(lldb_private::CompileUnit &comp_unit, 380 lldb_private::Block *parent_block, 381 const DWARFDIE &die, 382 lldb::addr_t subprogram_low_pc, uint32_t depth); 383 384 size_t ParseTypes(const lldb_private::SymbolContext &sc, const DWARFDIE &die, 385 bool parse_siblings, bool parse_children); 386 387 lldb::TypeSP ParseType(const lldb_private::SymbolContext &sc, 388 const DWARFDIE &die, bool *type_is_new); 389 390 bool ParseSupportFiles(DWARFUnit &dwarf_cu, const lldb::ModuleSP &module, 391 lldb_private::FileSpecList &support_files); 392 393 lldb_private::Type *ResolveTypeUID(const DWARFDIE &die, 394 bool assert_not_being_parsed); 395 396 lldb_private::Type *ResolveTypeUID(const DIERef &die_ref); 397 398 lldb::VariableSP ParseVariableDIE(const lldb_private::SymbolContext &sc, 399 const DWARFDIE &die, 400 const lldb::addr_t func_low_pc); 401 lldb::VariableSP ParseVariableDIECached(const lldb_private::SymbolContext &sc, 402 const DWARFDIE &die); 403 404 void 405 ParseAndAppendGlobalVariable(const lldb_private::SymbolContext &sc, 406 const DWARFDIE &die, 407 lldb_private::VariableList &cc_variable_list); 408 409 size_t ParseVariablesInFunctionContext(const lldb_private::SymbolContext &sc, 410 const DWARFDIE &die, 411 const lldb::addr_t func_low_pc); 412 413 size_t ParseVariablesInFunctionContextRecursive( 414 const lldb_private::SymbolContext &sc, const DWARFDIE &die, 415 lldb::addr_t func_low_pc, DIEArray &accumulator); 416 417 size_t PopulateBlockVariableList(lldb_private::VariableList &variable_list, 418 const lldb_private::SymbolContext &sc, 419 llvm::ArrayRef<DIERef> variable_dies, 420 lldb::addr_t func_low_pc); 421 422 DIEArray MergeBlockAbstractParameters(const DWARFDIE &block_die, 423 DIEArray &&variable_dies); 424 425 bool ClassOrStructIsVirtual(const DWARFDIE &die); 426 427 // Given a die_offset, figure out the symbol context representing that die. 428 bool ResolveFunction(const DWARFDIE &die, bool include_inlines, 429 lldb_private::SymbolContextList &sc_list); 430 431 /// Resolve functions and (possibly) blocks for the given file address and a 432 /// compile unit. The compile unit comes from the sc argument and it must be 433 /// set. The results of the lookup (if any) are written back to the symbol 434 /// context. 435 void ResolveFunctionAndBlock(lldb::addr_t file_vm_addr, bool lookup_block, 436 lldb_private::SymbolContext &sc); 437 438 virtual lldb::TypeSP 439 FindDefinitionTypeForDWARFDeclContext(const DWARFDIE &die); 440 441 virtual lldb::TypeSP 442 FindCompleteObjCDefinitionTypeForDIE(const DWARFDIE &die, 443 lldb_private::ConstString type_name, 444 bool must_be_implementation); 445 446 lldb_private::Symbol * 447 GetObjCClassSymbol(lldb_private::ConstString objc_class_name); 448 449 lldb::TypeSP GetTypeForDIE(const DWARFDIE &die, 450 bool resolve_function_context = false); 451 452 void SetDebugMapModule(const lldb::ModuleSP &module_sp) { 453 m_debug_map_module_wp = module_sp; 454 } 455 456 SymbolFileDWARFDebugMap *GetDebugMapSymfile(); 457 458 DWARFDIE 459 FindBlockContainingSpecification(const DIERef &func_die_ref, 460 dw_offset_t spec_block_die_offset); 461 462 DWARFDIE 463 FindBlockContainingSpecification(const DWARFDIE &die, 464 dw_offset_t spec_block_die_offset); 465 466 virtual UniqueDWARFASTTypeMap &GetUniqueDWARFASTTypeMap(); 467 468 bool DIEDeclContextsMatch(const DWARFDIE &die1, const DWARFDIE &die2); 469 470 bool ClassContainsSelector(const DWARFDIE &class_die, 471 lldb_private::ConstString selector); 472 473 /// Parse call site entries (DW_TAG_call_site), including any nested call site 474 /// parameters (DW_TAG_call_site_parameter). 475 std::vector<std::unique_ptr<lldb_private::CallEdge>> 476 CollectCallEdges(lldb::ModuleSP module, DWARFDIE function_die); 477 478 /// If this symbol file is linked to by a debug map (see 479 /// SymbolFileDWARFDebugMap), and \p file_addr is a file address relative to 480 /// an object file, adjust \p file_addr so that it is relative to the main 481 /// binary. Returns the adjusted address, or \p file_addr if no adjustment is 482 /// needed, on success and LLDB_INVALID_ADDRESS otherwise. 483 lldb::addr_t FixupAddress(lldb::addr_t file_addr); 484 485 bool FixupAddress(lldb_private::Address &addr); 486 487 typedef llvm::SetVector<lldb_private::Type *> TypeSet; 488 489 void GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset, 490 dw_offset_t max_die_offset, uint32_t type_mask, 491 TypeSet &type_set); 492 493 typedef lldb_private::RangeDataVector<lldb::addr_t, lldb::addr_t, 494 lldb_private::Variable *> 495 GlobalVariableMap; 496 497 GlobalVariableMap &GetGlobalAranges(); 498 499 void UpdateExternalModuleListIfNeeded(); 500 501 virtual DIEToTypePtr &GetDIEToType() { return m_die_to_type; } 502 503 virtual DIEToVariableSP &GetDIEToVariable() { return m_die_to_variable_sp; } 504 505 virtual DIEToClangType &GetForwardDeclDieToClangType() { 506 return m_forward_decl_die_to_clang_type; 507 } 508 509 virtual ClangTypeToDIE &GetForwardDeclClangTypeToDie() { 510 return m_forward_decl_clang_type_to_die; 511 } 512 513 void BuildCuTranslationTable(); 514 std::optional<uint32_t> GetDWARFUnitIndex(uint32_t cu_idx); 515 516 void FindDwpSymbolFile(); 517 518 const lldb_private::FileSpecList &GetTypeUnitSupportFiles(DWARFTypeUnit &tu); 519 520 void InitializeFirstCodeAddressRecursive( 521 const lldb_private::SectionList §ion_list); 522 523 void InitializeFirstCodeAddress(); 524 525 void GetCompileOptions( 526 std::unordered_map<lldb::CompUnitSP, lldb_private::Args> &args) override; 527 528 lldb::ModuleWP m_debug_map_module_wp; 529 SymbolFileDWARFDebugMap *m_debug_map_symfile; 530 531 llvm::once_flag m_dwp_symfile_once_flag; 532 std::shared_ptr<SymbolFileDWARFDwo> m_dwp_symfile; 533 534 lldb_private::DWARFContext m_context; 535 536 llvm::once_flag m_info_once_flag; 537 std::unique_ptr<DWARFDebugInfo> m_info; 538 539 std::unique_ptr<DWARFDebugAbbrev> m_abbr; 540 std::unique_ptr<GlobalVariableMap> m_global_aranges_up; 541 542 typedef std::unordered_map<lldb::offset_t, lldb_private::DebugMacrosSP> 543 DebugMacrosMap; 544 DebugMacrosMap m_debug_macros_map; 545 546 ExternalTypeModuleMap m_external_type_modules; 547 std::unique_ptr<lldb_private::DWARFIndex> m_index; 548 bool m_fetched_external_modules : 1; 549 lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type; 550 551 typedef std::set<DIERef> DIERefSet; 552 typedef llvm::StringMap<DIERefSet> NameToOffsetMap; 553 NameToOffsetMap m_function_scope_qualified_name_map; 554 std::unique_ptr<DWARFDebugRanges> m_ranges; 555 UniqueDWARFASTTypeMap m_unique_ast_type_map; 556 DIEToTypePtr m_die_to_type; 557 DIEToVariableSP m_die_to_variable_sp; 558 DIEToClangType m_forward_decl_die_to_clang_type; 559 ClangTypeToDIE m_forward_decl_clang_type_to_die; 560 llvm::DenseMap<dw_offset_t, lldb_private::FileSpecList> 561 m_type_unit_support_files; 562 std::vector<uint32_t> m_lldb_cu_to_dwarf_unit; 563 /// DWARF does not provide a good way for traditional (concatenating) linkers 564 /// to invalidate debug info describing dead-stripped code. These linkers will 565 /// keep the debug info but resolve any addresses referring to such code as 566 /// zero (BFD) or a small positive integer (zero + relocation addend -- GOLD). 567 /// Try to filter out this debug info by comparing it to the lowest code 568 /// address in the module. 569 lldb::addr_t m_first_code_address = LLDB_INVALID_ADDRESS; 570 lldb_private::StatsDuration m_parse_time; 571 std::atomic_flag m_dwo_warning_issued = ATOMIC_FLAG_INIT; 572 /// If this DWARF file a .DWO file or a DWARF .o file on mac when 573 /// no dSYM file is being used, this file index will be set to a 574 /// valid value that can be used in DIERef objects which will contain 575 /// an index that identifies the .DWO or .o file. 576 std::optional<uint64_t> m_file_index; 577 }; 578 579 #endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H 580