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/Utility/StructuredData.h" 34 #include "lldb/lldb-private.h" 35 36 #include "DWARFContext.h" 37 #include "DWARFDataExtractor.h" 38 #include "DWARFDefines.h" 39 #include "DWARFIndex.h" 40 #include "UniqueDWARFASTType.h" 41 42 class DWARFASTParserClang; 43 44 namespace llvm { 45 class DWARFDebugAbbrev; 46 } // namespace llvm 47 48 namespace lldb_private::plugin { 49 namespace dwarf { 50 // Forward Declarations for this DWARF plugin 51 class DebugMapModule; 52 class DWARFCompileUnit; 53 class DWARFDebugAranges; 54 class DWARFDebugInfo; 55 class DWARFDebugInfoEntry; 56 class DWARFDebugLine; 57 class DWARFDeclContext; 58 class DWARFFormValue; 59 class DWARFTypeUnit; 60 class SymbolFileDWARFDebugMap; 61 class SymbolFileDWARFDwo; 62 class SymbolFileDWARFDwp; 63 64 #define DIE_IS_BEING_PARSED ((lldb_private::Type *)1) 65 66 class SymbolFileDWARF : public SymbolFileCommon { 67 /// LLVM RTTI support. 68 static char ID; 69 70 public: 71 /// LLVM RTTI support. 72 /// \{ isA(const void * ClassID)73 bool isA(const void *ClassID) const override { 74 return ClassID == &ID || SymbolFileCommon::isA(ClassID); 75 } classof(const SymbolFile * obj)76 static bool classof(const SymbolFile *obj) { return obj->isA(&ID); } 77 /// \} 78 79 friend class SymbolFileDWARFDebugMap; 80 friend class SymbolFileDWARFDwo; 81 friend class DebugMapModule; 82 friend class DWARFCompileUnit; 83 friend class DWARFDIE; 84 friend class DWARFASTParser; 85 86 // Static Functions 87 static void Initialize(); 88 89 static void Terminate(); 90 91 static void DebuggerInitialize(Debugger &debugger); 92 GetPluginNameStatic()93 static llvm::StringRef GetPluginNameStatic() { return "dwarf"; } 94 95 static llvm::StringRef GetPluginDescriptionStatic(); 96 97 static SymbolFile *CreateInstance(lldb::ObjectFileSP objfile_sp); 98 99 // Constructors and Destructors 100 101 SymbolFileDWARF(lldb::ObjectFileSP objfile_sp, SectionList *dwo_section_list); 102 103 ~SymbolFileDWARF() override; 104 105 uint32_t CalculateAbilities() override; 106 107 void InitializeObject() override; 108 109 // Compile Unit function calls 110 111 lldb::LanguageType ParseLanguage(CompileUnit &comp_unit) override; 112 113 XcodeSDK ParseXcodeSDK(CompileUnit &comp_unit) override; 114 115 size_t ParseFunctions(CompileUnit &comp_unit) override; 116 117 bool ParseLineTable(CompileUnit &comp_unit) override; 118 119 bool ParseDebugMacros(CompileUnit &comp_unit) override; 120 121 bool ForEachExternalModule(CompileUnit &, llvm::DenseSet<SymbolFile *> &, 122 llvm::function_ref<bool(Module &)>) override; 123 124 bool ParseSupportFiles(CompileUnit &comp_unit, 125 SupportFileList &support_files) override; 126 127 bool ParseIsOptimized(CompileUnit &comp_unit) override; 128 129 size_t ParseTypes(CompileUnit &comp_unit) override; 130 131 bool 132 ParseImportedModules(const SymbolContext &sc, 133 std::vector<SourceModule> &imported_modules) override; 134 135 size_t ParseBlocksRecursive(Function &func) override; 136 137 size_t ParseVariablesForContext(const SymbolContext &sc) override; 138 139 std::optional<ArrayInfo> 140 GetDynamicArrayInfoForUID(lldb::user_id_t type_uid, 141 const ExecutionContext *exe_ctx) override; 142 143 bool CompleteType(CompilerType &compiler_type) override; 144 145 Type *ResolveType(const DWARFDIE &die, bool assert_not_being_parsed = true, 146 bool resolve_function_context = false); 147 148 CompilerDecl GetDeclForUID(lldb::user_id_t uid) override; 149 150 CompilerDeclContext GetDeclContextForUID(lldb::user_id_t uid) override; 151 152 CompilerDeclContext GetDeclContextContainingUID(lldb::user_id_t uid) override; 153 154 std::vector<CompilerContext> 155 GetCompilerContextForUID(lldb::user_id_t uid) override; 156 157 void ParseDeclsForContext(CompilerDeclContext decl_ctx) override; 158 159 uint32_t ResolveSymbolContext(const Address &so_addr, 160 lldb::SymbolContextItem resolve_scope, 161 SymbolContext &sc) override; 162 163 Status CalculateFrameVariableError(StackFrame &frame) override; 164 165 uint32_t ResolveSymbolContext(const SourceLocationSpec &src_location_spec, 166 lldb::SymbolContextItem resolve_scope, 167 SymbolContextList &sc_list) override; 168 169 void FindGlobalVariables(ConstString name, 170 const CompilerDeclContext &parent_decl_ctx, 171 uint32_t max_matches, 172 VariableList &variables) override; 173 174 void FindGlobalVariables(const RegularExpression ®ex, uint32_t max_matches, 175 VariableList &variables) override; 176 177 void FindFunctions(const Module::LookupInfo &lookup_info, 178 const CompilerDeclContext &parent_decl_ctx, 179 bool include_inlines, SymbolContextList &sc_list) override; 180 181 void FindFunctions(const RegularExpression ®ex, bool include_inlines, 182 SymbolContextList &sc_list) override; 183 184 void 185 GetMangledNamesForFunction(const std::string &scope_qualified_name, 186 std::vector<ConstString> &mangled_names) override; 187 188 uint64_t GetDebugInfoSize(bool load_all_debug_info = false) override; 189 190 void FindTypes(const lldb_private::TypeQuery &match, 191 lldb_private::TypeResults &results) override; 192 193 void GetTypes(SymbolContextScope *sc_scope, lldb::TypeClass type_mask, 194 TypeList &type_list) override; 195 196 llvm::Expected<lldb::TypeSystemSP> 197 GetTypeSystemForLanguage(lldb::LanguageType language) override; 198 199 CompilerDeclContext FindNamespace(ConstString name, 200 const CompilerDeclContext &parent_decl_ctx, 201 bool only_root_namespaces) override; 202 203 void PreloadSymbols() override; 204 205 std::recursive_mutex &GetModuleMutex() const override; 206 207 // PluginInterface protocol GetPluginName()208 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } 209 210 llvm::DWARFDebugAbbrev *DebugAbbrev(); 211 212 DWARFDebugInfo &DebugInfo(); 213 214 static bool SupportedVersion(uint16_t version); 215 216 DWARFDIE 217 GetDeclContextDIEContainingDIE(const DWARFDIE &die); 218 219 bool HasForwardDeclForCompilerType(const CompilerType &compiler_type); 220 221 CompileUnit *GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu); 222 223 virtual void GetObjCMethods(ConstString class_name, 224 llvm::function_ref<bool(DWARFDIE die)> callback); 225 226 DebugMacrosSP ParseDebugMacros(lldb::offset_t *offset); 227 228 static DWARFDIE GetParentSymbolContextDIE(const DWARFDIE &die); 229 230 lldb::ModuleSP GetExternalModule(ConstString name); 231 232 typedef std::map<ConstString, lldb::ModuleSP> ExternalTypeModuleMap; 233 234 /// Return the list of Clang modules imported by this SymbolFile. getExternalTypeModules()235 const ExternalTypeModuleMap &getExternalTypeModules() const { 236 return m_external_type_modules; 237 } 238 239 /// Given a DIERef, find the correct SymbolFileDWARF. 240 /// 241 /// A DIERef contains a file index that can uniquely identify a N_OSO file for 242 /// DWARF in .o files on mac, or a .dwo or .dwp file index for split DWARF. 243 /// Calling this function will find the correct symbol file to use so that 244 /// further lookups can be done on the correct symbol file so that the DIE 245 /// offset makes sense in the DIERef. 246 virtual SymbolFileDWARF *GetDIERefSymbolFile(const DIERef &die_ref); 247 248 virtual DWARFDIE GetDIE(const DIERef &die_ref); 249 250 DWARFDIE GetDIE(lldb::user_id_t uid); 251 252 std::shared_ptr<SymbolFileDWARFDwo> 253 GetDwoSymbolFileForCompileUnit(DWARFUnit &dwarf_cu, 254 const DWARFDebugInfoEntry &cu_die); 255 256 /// If this is a DWARF object with a single CU, return its DW_AT_dwo_id. 257 std::optional<uint64_t> GetDWOId(); 258 259 /// Given a DWO DWARFUnit, find the corresponding skeleton DWARFUnit 260 /// in the main symbol file. DWP files can have their DWARFUnits 261 /// parsed without the skeleton compile units having been parsed, so 262 /// sometimes we need to find the skeleton compile unit for a DWO 263 /// DWARFUnit so we can fill in this link. Currently unless the 264 /// skeleton compile unit has been parsed _and_ the Unit DIE has been 265 /// parsed, the DWO unit will not have a backward link setup correctly 266 /// which was causing crashes due to an assertion that was firing 267 /// in SymbolFileDWARF::GetCompUnitForDWARFCompUnit(). 268 DWARFUnit *GetSkeletonUnit(DWARFUnit *dwo_unit); 269 270 static bool DIEInDeclContext(const CompilerDeclContext &parent_decl_ctx, 271 const DWARFDIE &die, 272 bool only_root_namespaces = false); 273 274 std::vector<std::unique_ptr<CallEdge>> 275 ParseCallEdgesInFunction(UserID func_id) override; 276 277 void Dump(Stream &s) override; 278 279 void DumpClangAST(Stream &s, llvm::StringRef filter) override; 280 281 /// List separate dwo files. 282 bool GetSeparateDebugInfo(StructuredData::Dictionary &d, bool errors_only, 283 bool load_all_debug_info = false) override; 284 285 // Gets a pair of loaded and total dwo file counts. 286 // For split-dwarf files, this reports the counts for successfully loaded DWO 287 // CUs and total DWO CUs. For non-split-dwarf files, this reports 0 for both. 288 std::pair<uint32_t, uint32_t> GetDwoFileCounts() override; 289 GetDWARFContext()290 DWARFContext &GetDWARFContext() { return m_context; } 291 292 const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile(); 293 294 FileSpec GetFile(DWARFUnit &unit, size_t file_idx); 295 296 static llvm::Expected<lldb::TypeSystemSP> GetTypeSystem(DWARFUnit &unit); 297 298 static DWARFASTParser *GetDWARFParser(DWARFUnit &unit); 299 300 // CompilerDecl related functions 301 302 static CompilerDecl GetDecl(const DWARFDIE &die); 303 304 static CompilerDeclContext GetDeclContext(const DWARFDIE &die); 305 306 static CompilerDeclContext GetContainingDeclContext(const DWARFDIE &die); 307 308 static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val); 309 310 static lldb::LanguageType GetLanguage(DWARFUnit &unit); 311 /// Same as GetLanguage() but reports all C++ versions as C++ (no version). 312 static lldb::LanguageType GetLanguageFamily(DWARFUnit &unit); 313 GetDebugInfoParseTime()314 StatsDuration::Duration GetDebugInfoParseTime() override { 315 return m_parse_time; 316 } 317 StatsDuration::Duration GetDebugInfoIndexTime() override; 318 GetDebugInfoParseTimeRef()319 StatsDuration &GetDebugInfoParseTimeRef() { return m_parse_time; } 320 321 void ResetStatistics() override; 322 323 virtual lldb::offset_t GetVendorDWARFOpcodeSize(const DataExtractor & data,const lldb::offset_t data_offset,const uint8_t op)324 GetVendorDWARFOpcodeSize(const DataExtractor &data, 325 const lldb::offset_t data_offset, 326 const uint8_t op) const { 327 return LLDB_INVALID_OFFSET; 328 } 329 ParseVendorDWARFOpcode(uint8_t op,const DataExtractor & opcodes,lldb::offset_t & offset,std::vector<Value> & stack)330 virtual bool ParseVendorDWARFOpcode(uint8_t op, const DataExtractor &opcodes, 331 lldb::offset_t &offset, 332 std::vector<Value> &stack) const { 333 return false; 334 } 335 336 ConstString ConstructFunctionDemangledName(const DWARFDIE &die); 337 GetFileIndex()338 std::optional<uint64_t> GetFileIndex() const { return m_file_index; } SetFileIndex(std::optional<uint64_t> file_index)339 void SetFileIndex(std::optional<uint64_t> file_index) { 340 m_file_index = file_index; 341 } 342 343 virtual llvm::DenseMap<const DWARFDebugInfoEntry *, Type *> &GetDIEToType(); 344 345 virtual llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> & 346 GetForwardDeclCompilerTypeToDIE(); 347 348 typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::VariableSP> 349 DIEToVariableSP; 350 GetDIEToVariable()351 virtual DIEToVariableSP &GetDIEToVariable() { return m_die_to_variable_sp; } 352 353 virtual UniqueDWARFASTTypeMap &GetUniqueDWARFASTTypeMap(); 354 355 bool ClassOrStructIsVirtual(const DWARFDIE &die); 356 357 SymbolFileDWARFDebugMap *GetDebugMapSymfile(); 358 359 virtual DWARFDIE FindDefinitionDIE(const DWARFDIE &die); 360 361 virtual lldb::TypeSP FindCompleteObjCDefinitionTypeForDIE( 362 const DWARFDIE &die, ConstString type_name, bool must_be_implementation); 363 364 Type *ResolveTypeUID(lldb::user_id_t type_uid) override; 365 366 Type *ResolveTypeUID(const DWARFDIE &die, bool assert_not_being_parsed); 367 368 Type *ResolveTypeUID(const DIERef &die_ref); 369 370 /// Returns the DWARFIndex for this symbol, if it exists. getIndex()371 DWARFIndex *getIndex() { return m_index.get(); } 372 373 protected: 374 SymbolFileDWARF(const SymbolFileDWARF &) = delete; 375 const SymbolFileDWARF &operator=(const SymbolFileDWARF &) = delete; 376 377 virtual void LoadSectionData(lldb::SectionType sect_type, 378 DWARFDataExtractor &data); 379 380 bool DeclContextMatchesThisSymbolFile(const CompilerDeclContext &decl_ctx); 381 382 uint32_t CalculateNumCompileUnits() override; 383 384 lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override; 385 386 TypeList &GetTypeList() override; 387 388 lldb::CompUnitSP ParseCompileUnit(DWARFCompileUnit &dwarf_cu); 389 390 virtual DWARFCompileUnit *GetDWARFCompileUnit(CompileUnit *comp_unit); 391 392 DWARFUnit *GetNextUnparsedDWARFCompileUnit(DWARFUnit *prev_cu); 393 394 bool GetFunction(const DWARFDIE &die, SymbolContext &sc); 395 396 Function *ParseFunction(CompileUnit &comp_unit, const DWARFDIE &die); 397 398 size_t ParseBlocksRecursive(CompileUnit &comp_unit, Block *parent_block, 399 DWARFDIE die, lldb::addr_t function_file_addr); 400 401 size_t ParseTypes(const SymbolContext &sc, const DWARFDIE &die, 402 bool parse_siblings, bool parse_children); 403 404 lldb::TypeSP ParseType(const SymbolContext &sc, const DWARFDIE &die, 405 bool *type_is_new); 406 407 bool ParseSupportFiles(DWARFUnit &dwarf_cu, const lldb::ModuleSP &module, 408 SupportFileList &support_files); 409 410 lldb::VariableSP ParseVariableDIE(const SymbolContext &sc, 411 const DWARFDIE &die, 412 const lldb::addr_t func_low_pc); 413 lldb::VariableSP ParseVariableDIECached(const SymbolContext &sc, 414 const DWARFDIE &die); 415 416 void ParseAndAppendGlobalVariable(const SymbolContext &sc, 417 const DWARFDIE &die, 418 VariableList &cc_variable_list); 419 420 size_t ParseVariablesInFunctionContext(const SymbolContext &sc, 421 const DWARFDIE &die, 422 const lldb::addr_t func_low_pc); 423 424 size_t ParseVariablesInFunctionContextRecursive(const SymbolContext &sc, 425 const DWARFDIE &die, 426 lldb::addr_t func_low_pc, 427 DIEArray &accumulator); 428 429 size_t PopulateBlockVariableList(VariableList &variable_list, 430 const SymbolContext &sc, 431 llvm::ArrayRef<DIERef> variable_dies, 432 lldb::addr_t func_low_pc); 433 434 DIEArray MergeBlockAbstractParameters(const DWARFDIE &block_die, 435 DIEArray &&variable_dies); 436 437 // Given a die_offset, figure out the symbol context representing that die. 438 bool ResolveFunction(const DWARFDIE &die, bool include_inlines, 439 SymbolContextList &sc_list); 440 441 /// Resolve functions and (possibly) blocks for the given file address and a 442 /// compile unit. The compile unit comes from the sc argument and it must be 443 /// set. The results of the lookup (if any) are written back to the symbol 444 /// context. 445 void ResolveFunctionAndBlock(lldb::addr_t file_vm_addr, bool lookup_block, 446 SymbolContext &sc); 447 448 Symbol *GetObjCClassSymbol(ConstString objc_class_name); 449 450 lldb::TypeSP GetTypeForDIE(const DWARFDIE &die, 451 bool resolve_function_context = false); 452 SetDebugMapModule(const lldb::ModuleSP & module_sp)453 void SetDebugMapModule(const lldb::ModuleSP &module_sp) { 454 m_debug_map_module_wp = module_sp; 455 } 456 457 DWARFDIE 458 FindBlockContainingSpecification(const DIERef &func_die_ref, 459 dw_offset_t spec_block_die_offset); 460 461 DWARFDIE 462 FindBlockContainingSpecification(const DWARFDIE &die, 463 dw_offset_t spec_block_die_offset); 464 465 bool ClassContainsSelector(const DWARFDIE &class_die, ConstString selector); 466 467 /// Parse call site entries (DW_TAG_call_site), including any nested call site 468 /// parameters (DW_TAG_call_site_parameter). 469 std::vector<std::unique_ptr<CallEdge>> 470 CollectCallEdges(lldb::ModuleSP module, DWARFDIE function_die); 471 472 /// If this symbol file is linked to by a debug map (see 473 /// SymbolFileDWARFDebugMap), and \p file_addr is a file address relative to 474 /// an object file, adjust \p file_addr so that it is relative to the main 475 /// binary. Returns the adjusted address, or \p file_addr if no adjustment is 476 /// needed, on success and LLDB_INVALID_ADDRESS otherwise. 477 lldb::addr_t FixupAddress(lldb::addr_t file_addr); 478 479 bool FixupAddress(Address &addr); 480 481 typedef llvm::SetVector<Type *> TypeSet; 482 483 void GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset, 484 dw_offset_t max_die_offset, uint32_t type_mask, 485 TypeSet &type_set); 486 487 typedef RangeDataVector<lldb::addr_t, lldb::addr_t, Variable *> 488 GlobalVariableMap; 489 490 GlobalVariableMap &GetGlobalAranges(); 491 492 void UpdateExternalModuleListIfNeeded(); 493 494 void BuildCuTranslationTable(); 495 std::optional<uint32_t> GetDWARFUnitIndex(uint32_t cu_idx); 496 497 void FindDwpSymbolFile(); 498 499 const SupportFileList *GetTypeUnitSupportFiles(DWARFTypeUnit &tu); 500 501 void InitializeFirstCodeAddressRecursive(const SectionList §ion_list); 502 503 void InitializeFirstCodeAddress(); 504 505 void 506 GetCompileOptions(std::unordered_map<lldb::CompUnitSP, Args> &args) override; 507 508 lldb::ModuleWP m_debug_map_module_wp; 509 SymbolFileDWARFDebugMap *m_debug_map_symfile; 510 511 llvm::once_flag m_dwp_symfile_once_flag; 512 std::shared_ptr<SymbolFileDWARFDwo> m_dwp_symfile; 513 514 DWARFContext m_context; 515 516 llvm::once_flag m_info_once_flag; 517 std::unique_ptr<DWARFDebugInfo> m_info; 518 519 std::unique_ptr<llvm::DWARFDebugAbbrev> m_abbr; 520 std::unique_ptr<GlobalVariableMap> m_global_aranges_up; 521 522 typedef std::unordered_map<lldb::offset_t, DebugMacrosSP> DebugMacrosMap; 523 DebugMacrosMap m_debug_macros_map; 524 525 ExternalTypeModuleMap m_external_type_modules; 526 std::unique_ptr<DWARFIndex> m_index; 527 bool m_fetched_external_modules : 1; 528 529 typedef std::set<DIERef> DIERefSet; 530 typedef llvm::StringMap<DIERefSet> NameToOffsetMap; 531 NameToOffsetMap m_function_scope_qualified_name_map; 532 UniqueDWARFASTTypeMap m_unique_ast_type_map; 533 // A map from DIE to lldb_private::Type. For record type, the key might be 534 // either declaration DIE or definition DIE. 535 llvm::DenseMap<const DWARFDebugInfoEntry *, Type *> m_die_to_type; 536 DIEToVariableSP m_die_to_variable_sp; 537 // A map from CompilerType to the struct/class/union/enum DIE (might be a 538 // declaration or a definition) that is used to construct it. 539 llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> 540 m_forward_decl_compiler_type_to_die; 541 llvm::DenseMap<dw_offset_t, std::unique_ptr<SupportFileList>> 542 m_type_unit_support_files; 543 std::vector<uint32_t> m_lldb_cu_to_dwarf_unit; 544 /// DWARF does not provide a good way for traditional (concatenating) linkers 545 /// to invalidate debug info describing dead-stripped code. These linkers will 546 /// keep the debug info but resolve any addresses referring to such code as 547 /// zero (BFD) or a small positive integer (zero + relocation addend -- GOLD). 548 /// Try to filter out this debug info by comparing it to the lowest code 549 /// address in the module. 550 lldb::addr_t m_first_code_address = LLDB_INVALID_ADDRESS; 551 StatsDuration m_parse_time; 552 std::atomic_flag m_dwo_warning_issued = ATOMIC_FLAG_INIT; 553 /// If this DWARF file a .DWO file or a DWARF .o file on mac when 554 /// no dSYM file is being used, this file index will be set to a 555 /// valid value that can be used in DIERef objects which will contain 556 /// an index that identifies the .DWO or .o file. 557 std::optional<uint64_t> m_file_index; 558 }; 559 } // namespace dwarf 560 } // namespace lldb_private::plugin 561 562 #endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H 563