1 //===-- SymbolFileNativePDB.cpp ---------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "SymbolFileNativePDB.h"
12 #include "clang/AST/Attr.h"
13 #include "clang/AST/CharUnits.h"
14 #include "clang/AST/Decl.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/Type.h"
18 #include "Plugins/Language/CPlusPlus/MSVCUndecoratedNameParser.h"
19 #include "lldb/Core/Module.h"
20 #include "lldb/Core/PluginManager.h"
21 #include "lldb/Core/StreamBuffer.h"
22 #include "lldb/Core/StreamFile.h"
23 #include "lldb/Symbol/ClangASTContext.h"
24 #include "lldb/Symbol/ClangASTImporter.h"
25 #include "lldb/Symbol/ClangExternalASTSourceCommon.h"
26 #include "lldb/Symbol/ClangUtil.h"
27 #include "lldb/Symbol/CompileUnit.h"
28 #include "lldb/Symbol/LineTable.h"
29 #include "lldb/Symbol/ObjectFile.h"
30 #include "lldb/Symbol/SymbolContext.h"
31 #include "lldb/Symbol/SymbolVendor.h"
32 #include "lldb/Symbol/Variable.h"
33 #include "lldb/Symbol/VariableList.h"
35 #include "llvm/DebugInfo/CodeView/CVRecord.h"
36 #include "llvm/DebugInfo/CodeView/CVTypeVisitor.h"
37 #include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
38 #include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
39 #include "llvm/DebugInfo/CodeView/RecordName.h"
40 #include "llvm/DebugInfo/CodeView/SymbolDeserializer.h"
41 #include "llvm/DebugInfo/CodeView/SymbolRecordHelpers.h"
42 #include "llvm/DebugInfo/CodeView/TypeDeserializer.h"
43 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
44 #include "llvm/DebugInfo/PDB/Native/GlobalsStream.h"
45 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
46 #include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
47 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
48 #include "llvm/DebugInfo/PDB/Native/SymbolStream.h"
49 #include "llvm/DebugInfo/PDB/Native/TpiStream.h"
50 #include "llvm/DebugInfo/PDB/PDBTypes.h"
51 #include "llvm/Demangle/MicrosoftDemangle.h"
52 #include "llvm/Object/COFF.h"
53 #include "llvm/Support/Allocator.h"
54 #include "llvm/Support/BinaryStreamReader.h"
55 #include "llvm/Support/Error.h"
56 #include "llvm/Support/ErrorOr.h"
57 #include "llvm/Support/MemoryBuffer.h"
59 #include "DWARFLocationExpression.h"
60 #include "PdbAstBuilder.h"
61 #include "PdbSymUid.h"
63 #include "UdtRecordCompleter.h"
66 using namespace lldb_private;
68 using namespace llvm::codeview;
69 using namespace llvm::pdb;
71 static lldb::LanguageType TranslateLanguage(PDB_Lang lang) {
74 return lldb::LanguageType::eLanguageTypeC_plus_plus;
76 return lldb::LanguageType::eLanguageTypeC;
78 return lldb::LanguageType::eLanguageTypeUnknown;
82 static std::unique_ptr<PDBFile> loadPDBFile(std::string PdbPath,
83 llvm::BumpPtrAllocator &Allocator) {
84 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ErrorOrBuffer =
85 llvm::MemoryBuffer::getFile(PdbPath, /*FileSize=*/-1,
86 /*RequiresNullTerminator=*/false);
89 std::unique_ptr<llvm::MemoryBuffer> Buffer = std::move(*ErrorOrBuffer);
91 llvm::StringRef Path = Buffer->getBufferIdentifier();
92 auto Stream = llvm::make_unique<llvm::MemoryBufferByteStream>(
93 std::move(Buffer), llvm::support::little);
95 auto File = llvm::make_unique<PDBFile>(Path, std::move(Stream), Allocator);
96 if (auto EC = File->parseFileHeaders()) {
97 llvm::consumeError(std::move(EC));
100 if (auto EC = File->parseStreamData()) {
101 llvm::consumeError(std::move(EC));
108 static std::unique_ptr<PDBFile>
109 loadMatchingPDBFile(std::string exe_path, llvm::BumpPtrAllocator &allocator) {
110 // Try to find a matching PDB for an EXE.
111 using namespace llvm::object;
112 auto expected_binary = createBinary(exe_path);
114 // If the file isn't a PE/COFF executable, fail.
115 if (!expected_binary) {
116 llvm::consumeError(expected_binary.takeError());
119 OwningBinary<Binary> binary = std::move(*expected_binary);
121 auto *obj = llvm::dyn_cast<llvm::object::COFFObjectFile>(binary.getBinary());
124 const llvm::codeview::DebugInfo *pdb_info = nullptr;
126 // If it doesn't have a debug directory, fail.
127 llvm::StringRef pdb_file;
128 auto ec = obj->getDebugPDBInfo(pdb_info, pdb_file);
132 // if the file doesn't exist, is not a pdb, or doesn't have a matching guid,
134 llvm::file_magic magic;
135 ec = llvm::identify_magic(pdb_file, magic);
136 if (ec || magic != llvm::file_magic::pdb)
138 std::unique_ptr<PDBFile> pdb = loadPDBFile(pdb_file, allocator);
142 auto expected_info = pdb->getPDBInfoStream();
143 if (!expected_info) {
144 llvm::consumeError(expected_info.takeError());
147 llvm::codeview::GUID guid;
148 memcpy(&guid, pdb_info->PDB70.Signature, 16);
150 if (expected_info->getGuid() != guid)
155 static bool IsFunctionPrologue(const CompilandIndexItem &cci,
157 // FIXME: Implement this.
161 static bool IsFunctionEpilogue(const CompilandIndexItem &cci,
163 // FIXME: Implement this.
167 static llvm::StringRef GetSimpleTypeName(SimpleTypeKind kind) {
169 case SimpleTypeKind::Boolean128:
170 case SimpleTypeKind::Boolean16:
171 case SimpleTypeKind::Boolean32:
172 case SimpleTypeKind::Boolean64:
173 case SimpleTypeKind::Boolean8:
175 case SimpleTypeKind::Byte:
176 case SimpleTypeKind::UnsignedCharacter:
177 return "unsigned char";
178 case SimpleTypeKind::NarrowCharacter:
180 case SimpleTypeKind::SignedCharacter:
181 case SimpleTypeKind::SByte:
182 return "signed char";
183 case SimpleTypeKind::Character16:
185 case SimpleTypeKind::Character32:
187 case SimpleTypeKind::Complex80:
188 case SimpleTypeKind::Complex64:
189 case SimpleTypeKind::Complex32:
191 case SimpleTypeKind::Float128:
192 case SimpleTypeKind::Float80:
193 return "long double";
194 case SimpleTypeKind::Float64:
196 case SimpleTypeKind::Float32:
198 case SimpleTypeKind::Float16:
200 case SimpleTypeKind::Int128:
202 case SimpleTypeKind::Int64:
203 case SimpleTypeKind::Int64Quad:
205 case SimpleTypeKind::Int32:
207 case SimpleTypeKind::Int16:
209 case SimpleTypeKind::UInt128:
210 return "unsigned __int128";
211 case SimpleTypeKind::UInt64:
212 case SimpleTypeKind::UInt64Quad:
214 case SimpleTypeKind::HResult:
216 case SimpleTypeKind::UInt32:
218 case SimpleTypeKind::UInt16:
219 case SimpleTypeKind::UInt16Short:
220 return "unsigned short";
221 case SimpleTypeKind::Int32Long:
223 case SimpleTypeKind::UInt32Long:
224 return "unsigned long";
225 case SimpleTypeKind::Void:
227 case SimpleTypeKind::WideCharacter:
234 static bool IsClassRecord(TypeLeafKind kind) {
245 void SymbolFileNativePDB::Initialize() {
246 PluginManager::RegisterPlugin(GetPluginNameStatic(),
247 GetPluginDescriptionStatic(), CreateInstance,
251 void SymbolFileNativePDB::Terminate() {
252 PluginManager::UnregisterPlugin(CreateInstance);
255 void SymbolFileNativePDB::DebuggerInitialize(Debugger &debugger) {}
257 ConstString SymbolFileNativePDB::GetPluginNameStatic() {
258 static ConstString g_name("native-pdb");
262 const char *SymbolFileNativePDB::GetPluginDescriptionStatic() {
263 return "Microsoft PDB debug symbol cross-platform file reader.";
266 SymbolFile *SymbolFileNativePDB::CreateInstance(ObjectFile *obj_file) {
267 return new SymbolFileNativePDB(obj_file);
270 SymbolFileNativePDB::SymbolFileNativePDB(ObjectFile *object_file)
271 : SymbolFile(object_file) {}
273 SymbolFileNativePDB::~SymbolFileNativePDB() {}
275 uint32_t SymbolFileNativePDB::CalculateAbilities() {
276 uint32_t abilities = 0;
281 // Lazily load and match the PDB file, but only do this once.
282 std::unique_ptr<PDBFile> file_up =
283 loadMatchingPDBFile(m_obj_file->GetFileSpec().GetPath(), m_allocator);
286 auto module_sp = m_obj_file->GetModule();
289 // See if any symbol file is specified through `--symfile` option.
290 FileSpec symfile = module_sp->GetSymbolFileFileSpec();
293 file_up = loadPDBFile(symfile.GetPath(), m_allocator);
299 auto expected_index = PdbIndex::create(std::move(file_up));
300 if (!expected_index) {
301 llvm::consumeError(expected_index.takeError());
304 m_index = std::move(*expected_index);
309 // We don't especially have to be precise here. We only distinguish between
310 // stripped and not stripped.
311 abilities = kAllAbilities;
313 if (m_index->dbi().isStripped())
314 abilities &= ~(Blocks | LocalVariables);
318 void SymbolFileNativePDB::InitializeObject() {
319 m_obj_load_address = m_obj_file->GetFileOffset();
320 m_index->SetLoadAddress(m_obj_load_address);
321 m_index->ParseSectionContribs();
323 TypeSystem *ts = m_obj_file->GetModule()->GetTypeSystemForLanguage(
324 lldb::eLanguageTypeC_plus_plus);
326 ts->SetSymbolFile(this);
328 m_ast = llvm::make_unique<PdbAstBuilder>(*m_obj_file, *m_index);
331 uint32_t SymbolFileNativePDB::GetNumCompileUnits() {
332 const DbiModuleList &modules = m_index->dbi().modules();
333 uint32_t count = modules.getModuleCount();
337 // The linker can inject an additional "dummy" compilation unit into the
338 // PDB. Ignore this special compile unit for our purposes, if it is there.
339 // It is always the last one.
340 DbiModuleDescriptor last = modules.getModuleDescriptor(count - 1);
341 if (last.getModuleName() == "* Linker *")
346 Block &SymbolFileNativePDB::CreateBlock(PdbCompilandSymId block_id) {
347 CompilandIndexItem *cii = m_index->compilands().GetCompiland(block_id.modi);
348 CVSymbol sym = cii->m_debug_stream.readSymbolAtOffset(block_id.offset);
350 if (sym.kind() == S_GPROC32 || sym.kind() == S_LPROC32) {
351 // This is a function. It must be global. Creating the Function entry for
352 // it automatically creates a block for it.
353 CompUnitSP comp_unit = GetOrCreateCompileUnit(*cii);
354 return GetOrCreateFunction(block_id, *comp_unit)->GetBlock(false);
357 lldbassert(sym.kind() == S_BLOCK32);
359 // This is a block. Its parent is either a function or another block. In
360 // either case, its parent can be viewed as a block (e.g. a function contains
361 // 1 big block. So just get the parent block and add this block to it.
362 BlockSym block(static_cast<SymbolRecordKind>(sym.kind()));
363 cantFail(SymbolDeserializer::deserializeAs<BlockSym>(sym, block));
364 lldbassert(block.Parent != 0);
365 PdbCompilandSymId parent_id(block_id.modi, block.Parent);
366 Block &parent_block = GetOrCreateBlock(parent_id);
367 lldb::user_id_t opaque_block_uid = toOpaqueUid(block_id);
368 BlockSP child_block = std::make_shared<Block>(opaque_block_uid);
369 parent_block.AddChild(child_block);
371 m_ast->GetOrCreateBlockDecl(block_id);
373 m_blocks.insert({opaque_block_uid, child_block});
377 lldb::FunctionSP SymbolFileNativePDB::CreateFunction(PdbCompilandSymId func_id,
378 CompileUnit &comp_unit) {
379 const CompilandIndexItem *cci =
380 m_index->compilands().GetCompiland(func_id.modi);
382 CVSymbol sym_record = cci->m_debug_stream.readSymbolAtOffset(func_id.offset);
384 lldbassert(sym_record.kind() == S_LPROC32 || sym_record.kind() == S_GPROC32);
385 SegmentOffsetLength sol = GetSegmentOffsetAndLength(sym_record);
387 auto file_vm_addr = m_index->MakeVirtualAddress(sol.so);
388 if (file_vm_addr == LLDB_INVALID_ADDRESS || file_vm_addr == 0)
391 AddressRange func_range(file_vm_addr, sol.length,
392 comp_unit.GetModule()->GetSectionList());
393 if (!func_range.GetBaseAddress().IsValid())
396 ProcSym proc(static_cast<SymbolRecordKind>(sym_record.kind()));
397 cantFail(SymbolDeserializer::deserializeAs<ProcSym>(sym_record, proc));
398 if (proc.FunctionType == TypeIndex::None())
400 TypeSP func_type = GetOrCreateType(proc.FunctionType);
404 PdbTypeSymId sig_id(proc.FunctionType, false);
405 Mangled mangled(proc.Name);
406 FunctionSP func_sp = std::make_shared<Function>(
407 &comp_unit, toOpaqueUid(func_id), toOpaqueUid(sig_id), mangled,
408 func_type.get(), func_range);
410 comp_unit.AddFunction(func_sp);
412 m_ast->GetOrCreateFunctionDecl(func_id);
418 SymbolFileNativePDB::CreateCompileUnit(const CompilandIndexItem &cci) {
419 lldb::LanguageType lang =
420 cci.m_compile_opts ? TranslateLanguage(cci.m_compile_opts->getLanguage())
421 : lldb::eLanguageTypeUnknown;
423 LazyBool optimized = eLazyBoolNo;
424 if (cci.m_compile_opts && cci.m_compile_opts->hasOptimizations())
425 optimized = eLazyBoolYes;
427 llvm::SmallString<64> source_file_name =
428 m_index->compilands().GetMainSourceFile(cci);
429 FileSpec fs(source_file_name);
432 std::make_shared<CompileUnit>(m_obj_file->GetModule(), nullptr, fs,
433 toOpaqueUid(cci.m_id), lang, optimized);
435 m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(
436 cci.m_id.modi, cu_sp);
440 lldb::TypeSP SymbolFileNativePDB::CreateModifierType(PdbTypeSymId type_id,
441 const ModifierRecord &mr,
443 TpiStream &stream = m_index->tpi();
446 if (mr.ModifiedType.isSimple())
447 name = GetSimpleTypeName(mr.ModifiedType.getSimpleKind());
449 name = computeTypeName(stream.typeCollection(), mr.ModifiedType);
451 lldb::TypeSP modified_type = GetOrCreateType(mr.ModifiedType);
453 return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(name),
454 modified_type->GetByteSize(), nullptr,
455 LLDB_INVALID_UID, Type::eEncodingIsUID, decl,
456 ct, Type::eResolveStateFull);
460 SymbolFileNativePDB::CreatePointerType(PdbTypeSymId type_id,
461 const llvm::codeview::PointerRecord &pr,
463 TypeSP pointee = GetOrCreateType(pr.ReferentType);
467 if (pr.isPointerToMember()) {
468 MemberPointerInfo mpi = pr.getMemberInfo();
469 GetOrCreateType(mpi.ContainingType);
473 return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(),
474 pr.getSize(), nullptr, LLDB_INVALID_UID,
475 Type::eEncodingIsUID, decl, ct,
476 Type::eResolveStateFull);
479 lldb::TypeSP SymbolFileNativePDB::CreateSimpleType(TypeIndex ti,
481 uint64_t uid = toOpaqueUid(PdbTypeSymId(ti, false));
482 if (ti == TypeIndex::NullptrT()) {
484 return std::make_shared<Type>(
485 uid, this, ConstString("std::nullptr_t"), 0, nullptr, LLDB_INVALID_UID,
486 Type::eEncodingIsUID, decl, ct, Type::eResolveStateFull);
489 if (ti.getSimpleMode() != SimpleTypeMode::Direct) {
490 TypeSP direct_sp = GetOrCreateType(ti.makeDirect());
491 uint32_t pointer_size = 0;
492 switch (ti.getSimpleMode()) {
493 case SimpleTypeMode::FarPointer32:
494 case SimpleTypeMode::NearPointer32:
497 case SimpleTypeMode::NearPointer64:
501 // 128-bit and 16-bit pointers unsupported.
505 return std::make_shared<Type>(
506 uid, this, ConstString(), pointer_size, nullptr, LLDB_INVALID_UID,
507 Type::eEncodingIsUID, decl, ct, Type::eResolveStateFull);
510 if (ti.getSimpleKind() == SimpleTypeKind::NotTranslated)
513 size_t size = GetTypeSizeForSimpleKind(ti.getSimpleKind());
514 llvm::StringRef type_name = GetSimpleTypeName(ti.getSimpleKind());
517 return std::make_shared<Type>(uid, this, ConstString(type_name), size,
518 nullptr, LLDB_INVALID_UID, Type::eEncodingIsUID,
519 decl, ct, Type::eResolveStateFull);
522 static std::string GetUnqualifiedTypeName(const TagRecord &record) {
523 if (!record.hasUniqueName()) {
524 MSVCUndecoratedNameParser parser(record.Name);
525 llvm::ArrayRef<MSVCUndecoratedNameSpecifier> specs = parser.GetSpecifiers();
527 return specs.back().GetBaseName();
530 llvm::ms_demangle::Demangler demangler;
531 StringView sv(record.UniqueName.begin(), record.UniqueName.size());
532 llvm::ms_demangle::TagTypeNode *ttn = demangler.parseTagUniqueName(sv);
536 llvm::ms_demangle::IdentifierNode *idn =
537 ttn->QualifiedName->getUnqualifiedIdentifier();
538 return idn->toString();
542 SymbolFileNativePDB::CreateClassStructUnion(PdbTypeSymId type_id,
543 const TagRecord &record,
544 size_t size, CompilerType ct) {
546 std::string uname = GetUnqualifiedTypeName(record);
548 // FIXME: Search IPI stream for LF_UDT_MOD_SRC_LINE.
550 return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(uname),
551 size, nullptr, LLDB_INVALID_UID,
552 Type::eEncodingIsUID, decl, ct,
553 Type::eResolveStateForward);
556 lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id,
557 const ClassRecord &cr,
559 return CreateClassStructUnion(type_id, cr, cr.getSize(), ct);
562 lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id,
563 const UnionRecord &ur,
565 return CreateClassStructUnion(type_id, ur, ur.getSize(), ct);
568 lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id,
569 const EnumRecord &er,
571 std::string uname = GetUnqualifiedTypeName(er);
574 TypeSP underlying_type = GetOrCreateType(er.UnderlyingType);
576 return std::make_shared<lldb_private::Type>(
577 toOpaqueUid(type_id), this, ConstString(uname),
578 underlying_type->GetByteSize(), nullptr, LLDB_INVALID_UID,
579 lldb_private::Type::eEncodingIsUID, decl, ct,
580 lldb_private::Type::eResolveStateForward);
583 TypeSP SymbolFileNativePDB::CreateArrayType(PdbTypeSymId type_id,
584 const ArrayRecord &ar,
586 TypeSP element_type = GetOrCreateType(ar.ElementType);
589 TypeSP array_sp = std::make_shared<lldb_private::Type>(
590 toOpaqueUid(type_id), this, ConstString(), ar.Size, nullptr,
591 LLDB_INVALID_UID, lldb_private::Type::eEncodingIsUID, decl, ct,
592 lldb_private::Type::eResolveStateFull);
593 array_sp->SetEncodingType(element_type.get());
597 TypeSP SymbolFileNativePDB::CreateProcedureType(PdbTypeSymId type_id,
598 const ProcedureRecord &pr,
601 return std::make_shared<lldb_private::Type>(
602 toOpaqueUid(type_id), this, ConstString(), 0, nullptr, LLDB_INVALID_UID,
603 lldb_private::Type::eEncodingIsUID, decl, ct,
604 lldb_private::Type::eResolveStateFull);
607 TypeSP SymbolFileNativePDB::CreateType(PdbTypeSymId type_id, CompilerType ct) {
608 if (type_id.index.isSimple())
609 return CreateSimpleType(type_id.index, ct);
611 TpiStream &stream = type_id.is_ipi ? m_index->ipi() : m_index->tpi();
612 CVType cvt = stream.getType(type_id.index);
614 if (cvt.kind() == LF_MODIFIER) {
615 ModifierRecord modifier;
617 TypeDeserializer::deserializeAs<ModifierRecord>(cvt, modifier));
618 return CreateModifierType(type_id, modifier, ct);
621 if (cvt.kind() == LF_POINTER) {
622 PointerRecord pointer;
624 TypeDeserializer::deserializeAs<PointerRecord>(cvt, pointer));
625 return CreatePointerType(type_id, pointer, ct);
628 if (IsClassRecord(cvt.kind())) {
630 llvm::cantFail(TypeDeserializer::deserializeAs<ClassRecord>(cvt, cr));
631 return CreateTagType(type_id, cr, ct);
634 if (cvt.kind() == LF_ENUM) {
636 llvm::cantFail(TypeDeserializer::deserializeAs<EnumRecord>(cvt, er));
637 return CreateTagType(type_id, er, ct);
640 if (cvt.kind() == LF_UNION) {
642 llvm::cantFail(TypeDeserializer::deserializeAs<UnionRecord>(cvt, ur));
643 return CreateTagType(type_id, ur, ct);
646 if (cvt.kind() == LF_ARRAY) {
648 llvm::cantFail(TypeDeserializer::deserializeAs<ArrayRecord>(cvt, ar));
649 return CreateArrayType(type_id, ar, ct);
652 if (cvt.kind() == LF_PROCEDURE) {
654 llvm::cantFail(TypeDeserializer::deserializeAs<ProcedureRecord>(cvt, pr));
655 return CreateProcedureType(type_id, pr, ct);
661 TypeSP SymbolFileNativePDB::CreateAndCacheType(PdbTypeSymId type_id) {
662 // If they search for a UDT which is a forward ref, try and resolve the full
663 // decl and just map the forward ref uid to the full decl record.
664 llvm::Optional<PdbTypeSymId> full_decl_uid;
665 if (IsForwardRefUdt(type_id, m_index->tpi())) {
666 auto expected_full_ti =
667 m_index->tpi().findFullDeclForForwardRef(type_id.index);
668 if (!expected_full_ti)
669 llvm::consumeError(expected_full_ti.takeError());
670 else if (*expected_full_ti != type_id.index) {
671 full_decl_uid = PdbTypeSymId(*expected_full_ti, false);
673 // It's possible that a lookup would occur for the full decl causing it
674 // to be cached, then a second lookup would occur for the forward decl.
675 // We don't want to create a second full decl, so make sure the full
676 // decl hasn't already been cached.
677 auto full_iter = m_types.find(toOpaqueUid(*full_decl_uid));
678 if (full_iter != m_types.end()) {
679 TypeSP result = full_iter->second;
680 // Map the forward decl to the TypeSP for the full decl so we can take
681 // the fast path next time.
682 m_types[toOpaqueUid(type_id)] = result;
688 PdbTypeSymId best_decl_id = full_decl_uid ? *full_decl_uid : type_id;
690 clang::QualType qt = m_ast->GetOrCreateType(best_decl_id);
692 TypeSP result = CreateType(best_decl_id, m_ast->ToCompilerType(qt));
696 uint64_t best_uid = toOpaqueUid(best_decl_id);
697 m_types[best_uid] = result;
698 // If we had both a forward decl and a full decl, make both point to the new
701 m_types[toOpaqueUid(type_id)] = result;
706 TypeSP SymbolFileNativePDB::GetOrCreateType(PdbTypeSymId type_id) {
707 // We can't use try_emplace / overwrite here because the process of creating
708 // a type could create nested types, which could invalidate iterators. So
709 // we have to do a 2-phase lookup / insert.
710 auto iter = m_types.find(toOpaqueUid(type_id));
711 if (iter != m_types.end())
714 TypeSP type = CreateAndCacheType(type_id);
716 m_obj_file->GetModule()->GetTypeList()->Insert(type);
720 VariableSP SymbolFileNativePDB::CreateGlobalVariable(PdbGlobalSymId var_id) {
721 CVSymbol sym = m_index->symrecords().readRecord(var_id.offset);
722 if (sym.kind() == S_CONSTANT)
723 return CreateConstantSymbol(var_id, sym);
725 lldb::ValueType scope = eValueTypeInvalid;
727 llvm::StringRef name;
728 lldb::addr_t addr = 0;
729 uint16_t section = 0;
731 bool is_external = false;
732 switch (sym.kind()) {
737 DataSym ds(sym.kind());
738 llvm::cantFail(SymbolDeserializer::deserializeAs<DataSym>(sym, ds));
740 scope = (sym.kind() == S_GDATA32) ? eValueTypeVariableGlobal
741 : eValueTypeVariableStatic;
743 section = ds.Segment;
744 offset = ds.DataOffset;
745 addr = m_index->MakeVirtualAddress(ds.Segment, ds.DataOffset);
752 ThreadLocalDataSym tlds(sym.kind());
754 SymbolDeserializer::deserializeAs<ThreadLocalDataSym>(sym, tlds));
757 section = tlds.Segment;
758 offset = tlds.DataOffset;
759 addr = m_index->MakeVirtualAddress(tlds.Segment, tlds.DataOffset);
760 scope = eValueTypeVariableThreadLocal;
764 llvm_unreachable("unreachable!");
767 CompUnitSP comp_unit;
768 llvm::Optional<uint16_t> modi = m_index->GetModuleIndexForVa(addr);
770 CompilandIndexItem &cci = m_index->compilands().GetOrCreateCompiland(*modi);
771 comp_unit = GetOrCreateCompileUnit(cci);
775 PdbTypeSymId tid(ti, false);
776 SymbolFileTypeSP type_sp =
777 std::make_shared<SymbolFileType>(*this, toOpaqueUid(tid));
778 Variable::RangeList ranges;
780 m_ast->GetOrCreateVariableDecl(var_id);
782 DWARFExpression location = MakeGlobalLocationExpression(
783 section, offset, GetObjectFile()->GetModule());
785 std::string global_name("::");
787 VariableSP var_sp = std::make_shared<Variable>(
788 toOpaqueUid(var_id), name.str().c_str(), global_name.c_str(), type_sp,
789 scope, comp_unit.get(), ranges, &decl, location, is_external, false,
791 var_sp->SetLocationIsConstantValueData(false);
797 SymbolFileNativePDB::CreateConstantSymbol(PdbGlobalSymId var_id,
798 const CVSymbol &cvs) {
799 TpiStream &tpi = m_index->tpi();
800 ConstantSym constant(cvs.kind());
802 llvm::cantFail(SymbolDeserializer::deserializeAs<ConstantSym>(cvs, constant));
803 std::string global_name("::");
804 global_name += constant.Name;
805 PdbTypeSymId tid(constant.Type, false);
806 SymbolFileTypeSP type_sp =
807 std::make_shared<SymbolFileType>(*this, toOpaqueUid(tid));
810 Variable::RangeList ranges;
811 ModuleSP module = GetObjectFile()->GetModule();
812 DWARFExpression location = MakeConstantLocationExpression(
813 constant.Type, tpi, constant.Value, module);
815 VariableSP var_sp = std::make_shared<Variable>(
816 toOpaqueUid(var_id), constant.Name.str().c_str(), global_name.c_str(),
817 type_sp, eValueTypeVariableGlobal, module.get(), ranges, &decl, location,
818 false, false, false);
819 var_sp->SetLocationIsConstantValueData(true);
824 SymbolFileNativePDB::GetOrCreateGlobalVariable(PdbGlobalSymId var_id) {
825 auto emplace_result = m_global_vars.try_emplace(toOpaqueUid(var_id), nullptr);
826 if (emplace_result.second)
827 emplace_result.first->second = CreateGlobalVariable(var_id);
829 return emplace_result.first->second;
832 lldb::TypeSP SymbolFileNativePDB::GetOrCreateType(TypeIndex ti) {
833 return GetOrCreateType(PdbTypeSymId(ti, false));
836 FunctionSP SymbolFileNativePDB::GetOrCreateFunction(PdbCompilandSymId func_id,
837 CompileUnit &comp_unit) {
838 auto emplace_result = m_functions.try_emplace(toOpaqueUid(func_id), nullptr);
839 if (emplace_result.second)
840 emplace_result.first->second = CreateFunction(func_id, comp_unit);
842 return emplace_result.first->second;
846 SymbolFileNativePDB::GetOrCreateCompileUnit(const CompilandIndexItem &cci) {
848 auto emplace_result =
849 m_compilands.try_emplace(toOpaqueUid(cci.m_id), nullptr);
850 if (emplace_result.second)
851 emplace_result.first->second = CreateCompileUnit(cci);
853 lldbassert(emplace_result.first->second);
854 return emplace_result.first->second;
857 Block &SymbolFileNativePDB::GetOrCreateBlock(PdbCompilandSymId block_id) {
858 auto iter = m_blocks.find(toOpaqueUid(block_id));
859 if (iter != m_blocks.end())
860 return *iter->second;
862 return CreateBlock(block_id);
865 void SymbolFileNativePDB::ParseDeclsForContext(
866 lldb_private::CompilerDeclContext decl_ctx) {
867 clang::DeclContext *context = m_ast->FromCompilerDeclContext(decl_ctx);
870 m_ast->ParseDeclsForContext(*context);
873 lldb::CompUnitSP SymbolFileNativePDB::ParseCompileUnitAtIndex(uint32_t index) {
874 if (index >= GetNumCompileUnits())
876 lldbassert(index < UINT16_MAX);
877 if (index >= UINT16_MAX)
880 CompilandIndexItem &item = m_index->compilands().GetOrCreateCompiland(index);
882 return GetOrCreateCompileUnit(item);
885 lldb::LanguageType SymbolFileNativePDB::ParseLanguage(CompileUnit &comp_unit) {
886 PdbSymUid uid(comp_unit.GetID());
887 lldbassert(uid.kind() == PdbSymUidKind::Compiland);
889 CompilandIndexItem *item =
890 m_index->compilands().GetCompiland(uid.asCompiland().modi);
892 if (!item->m_compile_opts)
893 return lldb::eLanguageTypeUnknown;
895 return TranslateLanguage(item->m_compile_opts->getLanguage());
898 void SymbolFileNativePDB::AddSymbols(Symtab &symtab) { return; }
900 size_t SymbolFileNativePDB::ParseFunctions(CompileUnit &comp_unit) {
901 PdbSymUid uid{comp_unit.GetID()};
902 lldbassert(uid.kind() == PdbSymUidKind::Compiland);
903 uint16_t modi = uid.asCompiland().modi;
904 CompilandIndexItem &cii = m_index->compilands().GetOrCreateCompiland(modi);
906 size_t count = comp_unit.GetNumFunctions();
907 const CVSymbolArray &syms = cii.m_debug_stream.getSymbolArray();
908 for (auto iter = syms.begin(); iter != syms.end(); ++iter) {
909 if (iter->kind() != S_LPROC32 && iter->kind() != S_GPROC32)
912 PdbCompilandSymId sym_id{modi, iter.offset()};
914 FunctionSP func = GetOrCreateFunction(sym_id, comp_unit);
917 size_t new_count = comp_unit.GetNumFunctions();
918 lldbassert(new_count >= count);
919 return new_count - count;
922 static bool NeedsResolvedCompileUnit(uint32_t resolve_scope) {
923 // If any of these flags are set, we need to resolve the compile unit.
924 uint32_t flags = eSymbolContextCompUnit;
925 flags |= eSymbolContextVariable;
926 flags |= eSymbolContextFunction;
927 flags |= eSymbolContextBlock;
928 flags |= eSymbolContextLineEntry;
929 return (resolve_scope & flags) != 0;
932 uint32_t SymbolFileNativePDB::ResolveSymbolContext(
933 const Address &addr, SymbolContextItem resolve_scope, SymbolContext &sc) {
934 uint32_t resolved_flags = 0;
935 lldb::addr_t file_addr = addr.GetFileAddress();
937 if (NeedsResolvedCompileUnit(resolve_scope)) {
938 llvm::Optional<uint16_t> modi = m_index->GetModuleIndexForVa(file_addr);
941 CompilandIndexItem *cci = m_index->compilands().GetCompiland(*modi);
945 sc.comp_unit = GetOrCreateCompileUnit(*cci).get();
946 resolved_flags |= eSymbolContextCompUnit;
949 if (resolve_scope & eSymbolContextFunction ||
950 resolve_scope & eSymbolContextBlock) {
951 lldbassert(sc.comp_unit);
952 std::vector<SymbolAndUid> matches = m_index->FindSymbolsByVa(file_addr);
953 // Search the matches in reverse. This way if there are multiple matches
954 // (for example we are 3 levels deep in a nested scope) it will find the
955 // innermost one first.
956 for (const auto &match : llvm::reverse(matches)) {
957 if (match.uid.kind() != PdbSymUidKind::CompilandSym)
960 PdbCompilandSymId csid = match.uid.asCompilandSym();
961 CVSymbol cvs = m_index->ReadSymbolRecord(csid);
962 PDB_SymType type = CVSymToPDBSym(cvs.kind());
963 if (type != PDB_SymType::Function && type != PDB_SymType::Block)
965 if (type == PDB_SymType::Function) {
966 sc.function = GetOrCreateFunction(csid, *sc.comp_unit).get();
967 sc.block = sc.GetFunctionBlock();
970 if (type == PDB_SymType::Block) {
971 sc.block = &GetOrCreateBlock(csid);
972 sc.function = sc.block->CalculateSymbolContextFunction();
974 resolved_flags |= eSymbolContextFunction;
975 resolved_flags |= eSymbolContextBlock;
980 if (resolve_scope & eSymbolContextLineEntry) {
981 lldbassert(sc.comp_unit);
982 if (auto *line_table = sc.comp_unit->GetLineTable()) {
983 if (line_table->FindLineEntryByAddress(addr, sc.line_entry))
984 resolved_flags |= eSymbolContextLineEntry;
988 return resolved_flags;
991 uint32_t SymbolFileNativePDB::ResolveSymbolContext(
992 const FileSpec &file_spec, uint32_t line, bool check_inlines,
993 lldb::SymbolContextItem resolve_scope, SymbolContextList &sc_list) {
997 static void AppendLineEntryToSequence(LineTable &table, LineSequence &sequence,
998 const CompilandIndexItem &cci,
999 lldb::addr_t base_addr,
1000 uint32_t file_number,
1001 const LineFragmentHeader &block,
1002 const LineNumberEntry &cur) {
1003 LineInfo cur_info(cur.Flags);
1005 if (cur_info.isAlwaysStepInto() || cur_info.isNeverStepInto())
1008 uint64_t addr = base_addr + cur.Offset;
1010 bool is_statement = cur_info.isStatement();
1011 bool is_prologue = IsFunctionPrologue(cci, addr);
1012 bool is_epilogue = IsFunctionEpilogue(cci, addr);
1014 uint32_t lno = cur_info.getStartLine();
1016 table.AppendLineEntryToSequence(&sequence, addr, lno, 0, file_number,
1017 is_statement, false, is_prologue, is_epilogue,
1021 static void TerminateLineSequence(LineTable &table,
1022 const LineFragmentHeader &block,
1023 lldb::addr_t base_addr, uint32_t file_number,
1025 std::unique_ptr<LineSequence> seq) {
1026 // The end is always a terminal entry, so insert it regardless.
1027 table.AppendLineEntryToSequence(seq.get(), base_addr + block.CodeSize,
1028 last_line, 0, file_number, false, false,
1029 false, false, true);
1030 table.InsertSequence(seq.release());
1033 bool SymbolFileNativePDB::ParseLineTable(CompileUnit &comp_unit) {
1034 // Unfortunately LLDB is set up to parse the entire compile unit line table
1035 // all at once, even if all it really needs is line info for a specific
1036 // function. In the future it would be nice if it could set the sc.m_function
1037 // member, and we could only get the line info for the function in question.
1038 PdbSymUid cu_id(comp_unit.GetID());
1039 lldbassert(cu_id.kind() == PdbSymUidKind::Compiland);
1040 CompilandIndexItem *cci =
1041 m_index->compilands().GetCompiland(cu_id.asCompiland().modi);
1043 auto line_table = llvm::make_unique<LineTable>(&comp_unit);
1045 // This is basically a copy of the .debug$S subsections from all original COFF
1046 // object files merged together with address relocations applied. We are
1047 // looking for all DEBUG_S_LINES subsections.
1048 for (const DebugSubsectionRecord &dssr :
1049 cci->m_debug_stream.getSubsectionsArray()) {
1050 if (dssr.kind() != DebugSubsectionKind::Lines)
1053 DebugLinesSubsectionRef lines;
1054 llvm::BinaryStreamReader reader(dssr.getRecordData());
1055 if (auto EC = lines.initialize(reader)) {
1056 llvm::consumeError(std::move(EC));
1060 const LineFragmentHeader *lfh = lines.header();
1061 uint64_t virtual_addr =
1062 m_index->MakeVirtualAddress(lfh->RelocSegment, lfh->RelocOffset);
1064 const auto &checksums = cci->m_strings.checksums().getArray();
1065 const auto &strings = cci->m_strings.strings();
1066 for (const LineColumnEntry &group : lines) {
1067 // Indices in this structure are actually offsets of records in the
1068 // DEBUG_S_FILECHECKSUMS subsection. Those entries then have an index
1069 // into the global PDB string table.
1070 auto iter = checksums.at(group.NameIndex);
1071 if (iter == checksums.end())
1074 llvm::Expected<llvm::StringRef> efn =
1075 strings.getString(iter->FileNameOffset);
1077 llvm::consumeError(efn.takeError());
1081 // LLDB wants the index of the file in the list of support files.
1082 auto fn_iter = llvm::find(cci->m_file_list, *efn);
1083 lldbassert(fn_iter != cci->m_file_list.end());
1084 // LLDB support file indices are 1-based.
1085 uint32_t file_index =
1086 1 + std::distance(cci->m_file_list.begin(), fn_iter);
1088 std::unique_ptr<LineSequence> sequence(
1089 line_table->CreateLineSequenceContainer());
1090 lldbassert(!group.LineNumbers.empty());
1092 for (const LineNumberEntry &entry : group.LineNumbers) {
1093 AppendLineEntryToSequence(*line_table, *sequence, *cci, virtual_addr,
1094 file_index, *lfh, entry);
1096 LineInfo last_line(group.LineNumbers.back().Flags);
1097 TerminateLineSequence(*line_table, *lfh, virtual_addr, file_index,
1098 last_line.getEndLine(), std::move(sequence));
1102 if (line_table->GetSize() == 0)
1105 comp_unit.SetLineTable(line_table.release());
1109 bool SymbolFileNativePDB::ParseDebugMacros(CompileUnit &comp_unit) {
1110 // PDB doesn't contain information about macros
1114 bool SymbolFileNativePDB::ParseSupportFiles(CompileUnit &comp_unit,
1115 FileSpecList &support_files) {
1116 PdbSymUid cu_id(comp_unit.GetID());
1117 lldbassert(cu_id.kind() == PdbSymUidKind::Compiland);
1118 CompilandIndexItem *cci =
1119 m_index->compilands().GetCompiland(cu_id.asCompiland().modi);
1122 for (llvm::StringRef f : cci->m_file_list) {
1123 FileSpec::Style style =
1124 f.startswith("/") ? FileSpec::Style::posix : FileSpec::Style::windows;
1125 FileSpec spec(f, style);
1126 support_files.Append(spec);
1129 llvm::SmallString<64> main_source_file =
1130 m_index->compilands().GetMainSourceFile(*cci);
1131 FileSpec::Style style = main_source_file.startswith("/")
1132 ? FileSpec::Style::posix
1133 : FileSpec::Style::windows;
1134 FileSpec spec(main_source_file, style);
1135 support_files.Insert(0, spec);
1139 bool SymbolFileNativePDB::ParseImportedModules(
1140 const SymbolContext &sc, std::vector<ConstString> &imported_modules) {
1141 // PDB does not yet support module debug info
1145 size_t SymbolFileNativePDB::ParseBlocksRecursive(Function &func) {
1146 GetOrCreateBlock(PdbSymUid(func.GetID()).asCompilandSym());
1147 // FIXME: Parse child blocks
1151 void SymbolFileNativePDB::DumpClangAST(Stream &s) { m_ast->Dump(s); }
1153 uint32_t SymbolFileNativePDB::FindGlobalVariables(
1154 const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
1155 uint32_t max_matches, VariableList &variables) {
1156 using SymbolAndOffset = std::pair<uint32_t, llvm::codeview::CVSymbol>;
1158 std::vector<SymbolAndOffset> results = m_index->globals().findRecordsByName(
1159 name.GetStringRef(), m_index->symrecords());
1160 for (const SymbolAndOffset &result : results) {
1162 switch (result.second.kind()) {
1163 case SymbolKind::S_GDATA32:
1164 case SymbolKind::S_LDATA32:
1165 case SymbolKind::S_GTHREAD32:
1166 case SymbolKind::S_LTHREAD32:
1167 case SymbolKind::S_CONSTANT: {
1168 PdbGlobalSymId global(result.first, false);
1169 var = GetOrCreateGlobalVariable(global);
1170 variables.AddVariable(var);
1177 return variables.GetSize();
1180 uint32_t SymbolFileNativePDB::FindFunctions(
1181 const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
1182 FunctionNameType name_type_mask, bool include_inlines, bool append,
1183 SymbolContextList &sc_list) {
1184 // For now we only support lookup by method name.
1185 if (!(name_type_mask & eFunctionNameTypeMethod))
1188 using SymbolAndOffset = std::pair<uint32_t, llvm::codeview::CVSymbol>;
1190 std::vector<SymbolAndOffset> matches = m_index->globals().findRecordsByName(
1191 name.GetStringRef(), m_index->symrecords());
1192 for (const SymbolAndOffset &match : matches) {
1193 if (match.second.kind() != S_PROCREF && match.second.kind() != S_LPROCREF)
1195 ProcRefSym proc(match.second.kind());
1196 cantFail(SymbolDeserializer::deserializeAs<ProcRefSym>(match.second, proc));
1198 if (!IsValidRecord(proc))
1201 CompilandIndexItem &cci =
1202 m_index->compilands().GetOrCreateCompiland(proc.modi());
1205 sc.comp_unit = GetOrCreateCompileUnit(cci).get();
1206 PdbCompilandSymId func_id(proc.modi(), proc.SymOffset);
1207 sc.function = GetOrCreateFunction(func_id, *sc.comp_unit).get();
1212 return sc_list.GetSize();
1215 uint32_t SymbolFileNativePDB::FindFunctions(const RegularExpression ®ex,
1216 bool include_inlines, bool append,
1217 SymbolContextList &sc_list) {
1221 uint32_t SymbolFileNativePDB::FindTypes(
1222 const ConstString &name, const CompilerDeclContext *parent_decl_ctx,
1223 bool append, uint32_t max_matches,
1224 llvm::DenseSet<SymbolFile *> &searched_symbol_files, TypeMap &types) {
1230 searched_symbol_files.clear();
1231 searched_symbol_files.insert(this);
1233 // There is an assumption 'name' is not a regex
1234 size_t match_count = FindTypesByName(name.GetStringRef(), max_matches, types);
1240 SymbolFileNativePDB::FindTypes(const std::vector<CompilerContext> &context,
1241 bool append, TypeMap &types) {
1245 size_t SymbolFileNativePDB::FindTypesByName(llvm::StringRef name,
1246 uint32_t max_matches,
1249 size_t match_count = 0;
1250 std::vector<TypeIndex> matches = m_index->tpi().findRecordsByName(name);
1251 if (max_matches > 0 && max_matches < matches.size())
1252 matches.resize(max_matches);
1254 for (TypeIndex ti : matches) {
1255 TypeSP type = GetOrCreateType(ti);
1265 size_t SymbolFileNativePDB::ParseTypes(CompileUnit &comp_unit) {
1266 // Only do the full type scan the first time.
1267 if (m_done_full_type_scan)
1270 size_t old_count = m_obj_file->GetModule()->GetTypeList()->GetSize();
1271 LazyRandomTypeCollection &types = m_index->tpi().typeCollection();
1273 // First process the entire TPI stream.
1274 for (auto ti = types.getFirst(); ti; ti = types.getNext(*ti)) {
1275 TypeSP type = GetOrCreateType(*ti);
1277 (void)type->GetFullCompilerType();
1280 // Next look for S_UDT records in the globals stream.
1281 for (const uint32_t gid : m_index->globals().getGlobalsTable()) {
1282 PdbGlobalSymId global{gid, false};
1283 CVSymbol sym = m_index->ReadSymbolRecord(global);
1284 if (sym.kind() != S_UDT)
1287 UDTSym udt = llvm::cantFail(SymbolDeserializer::deserializeAs<UDTSym>(sym));
1288 bool is_typedef = true;
1289 if (IsTagRecord(PdbTypeSymId{udt.Type, false}, m_index->tpi())) {
1290 CVType cvt = m_index->tpi().getType(udt.Type);
1291 llvm::StringRef name = CVTagRecord::create(cvt).name();
1292 if (name == udt.Name)
1297 GetOrCreateTypedef(global);
1300 size_t new_count = m_obj_file->GetModule()->GetTypeList()->GetSize();
1302 m_done_full_type_scan = true;
1304 return new_count - old_count;
1308 SymbolFileNativePDB::ParseVariablesForCompileUnit(CompileUnit &comp_unit,
1309 VariableList &variables) {
1310 PdbSymUid sym_uid(comp_unit.GetID());
1311 lldbassert(sym_uid.kind() == PdbSymUidKind::Compiland);
1315 VariableSP SymbolFileNativePDB::CreateLocalVariable(PdbCompilandSymId scope_id,
1316 PdbCompilandSymId var_id,
1318 ModuleSP module = GetObjectFile()->GetModule();
1319 VariableInfo var_info = GetVariableLocationInfo(*m_index, var_id, module);
1320 if (!var_info.location || !var_info.ranges)
1323 CompilandIndexItem *cii = m_index->compilands().GetCompiland(var_id.modi);
1324 CompUnitSP comp_unit_sp = GetOrCreateCompileUnit(*cii);
1325 TypeSP type_sp = GetOrCreateType(var_info.type);
1326 std::string name = var_info.name.str();
1328 SymbolFileTypeSP sftype =
1329 std::make_shared<SymbolFileType>(*this, type_sp->GetID());
1331 ValueType var_scope =
1332 is_param ? eValueTypeVariableArgument : eValueTypeVariableLocal;
1333 VariableSP var_sp = std::make_shared<Variable>(
1334 toOpaqueUid(var_id), name.c_str(), name.c_str(), sftype, var_scope,
1335 comp_unit_sp.get(), *var_info.ranges, &decl, *var_info.location, false,
1339 m_ast->GetOrCreateVariableDecl(scope_id, var_id);
1341 m_local_variables[toOpaqueUid(var_id)] = var_sp;
1345 VariableSP SymbolFileNativePDB::GetOrCreateLocalVariable(
1346 PdbCompilandSymId scope_id, PdbCompilandSymId var_id, bool is_param) {
1347 auto iter = m_local_variables.find(toOpaqueUid(var_id));
1348 if (iter != m_local_variables.end())
1349 return iter->second;
1351 return CreateLocalVariable(scope_id, var_id, is_param);
1354 TypeSP SymbolFileNativePDB::CreateTypedef(PdbGlobalSymId id) {
1355 CVSymbol sym = m_index->ReadSymbolRecord(id);
1356 lldbassert(sym.kind() == SymbolKind::S_UDT);
1358 UDTSym udt = llvm::cantFail(SymbolDeserializer::deserializeAs<UDTSym>(sym));
1360 TypeSP target_type = GetOrCreateType(udt.Type);
1362 (void)m_ast->GetOrCreateTypedefDecl(id);
1365 return std::make_shared<lldb_private::Type>(
1366 toOpaqueUid(id), this, ConstString(udt.Name), target_type->GetByteSize(),
1367 nullptr, target_type->GetID(), lldb_private::Type::eEncodingIsTypedefUID,
1368 decl, target_type->GetForwardCompilerType(),
1369 lldb_private::Type::eResolveStateForward);
1372 TypeSP SymbolFileNativePDB::GetOrCreateTypedef(PdbGlobalSymId id) {
1373 auto iter = m_types.find(toOpaqueUid(id));
1374 if (iter != m_types.end())
1375 return iter->second;
1377 return CreateTypedef(id);
1380 size_t SymbolFileNativePDB::ParseVariablesForBlock(PdbCompilandSymId block_id) {
1381 Block &block = GetOrCreateBlock(block_id);
1385 CompilandIndexItem *cii = m_index->compilands().GetCompiland(block_id.modi);
1386 CVSymbol sym = cii->m_debug_stream.readSymbolAtOffset(block_id.offset);
1387 uint32_t params_remaining = 0;
1388 switch (sym.kind()) {
1391 ProcSym proc(static_cast<SymbolRecordKind>(sym.kind()));
1392 cantFail(SymbolDeserializer::deserializeAs<ProcSym>(sym, proc));
1393 CVType signature = m_index->tpi().getType(proc.FunctionType);
1394 ProcedureRecord sig;
1395 cantFail(TypeDeserializer::deserializeAs<ProcedureRecord>(signature, sig));
1396 params_remaining = sig.getParameterCount();
1402 lldbassert(false && "Symbol is not a block!");
1406 VariableListSP variables = block.GetBlockVariableList(false);
1408 variables = std::make_shared<VariableList>();
1409 block.SetVariableList(variables);
1412 CVSymbolArray syms = limitSymbolArrayToScope(
1413 cii->m_debug_stream.getSymbolArray(), block_id.offset);
1415 // Skip the first record since it's a PROC32 or BLOCK32, and there's
1416 // no point examining it since we know it's not a local variable.
1418 auto iter = syms.begin();
1419 auto end = syms.end();
1421 while (iter != end) {
1422 uint32_t record_offset = iter.offset();
1423 CVSymbol variable_cvs = *iter;
1424 PdbCompilandSymId child_sym_id(block_id.modi, record_offset);
1427 // If this is a block, recurse into its children and then skip it.
1428 if (variable_cvs.kind() == S_BLOCK32) {
1429 uint32_t block_end = getScopeEndOffset(variable_cvs);
1430 count += ParseVariablesForBlock(child_sym_id);
1431 iter = syms.at(block_end);
1435 bool is_param = params_remaining > 0;
1436 VariableSP variable;
1437 switch (variable_cvs.kind()) {
1441 variable = GetOrCreateLocalVariable(block_id, child_sym_id, is_param);
1445 variables->AddVariableIfUnique(variable);
1452 // Pass false for set_children, since we call this recursively so that the
1453 // children will call this for themselves.
1454 block.SetDidParseVariables(true, false);
1459 size_t SymbolFileNativePDB::ParseVariablesForContext(const SymbolContext &sc) {
1460 lldbassert(sc.function || sc.comp_unit);
1462 VariableListSP variables;
1464 PdbSymUid block_id(sc.block->GetID());
1466 size_t count = ParseVariablesForBlock(block_id.asCompilandSym());
1471 PdbSymUid block_id(sc.function->GetID());
1473 size_t count = ParseVariablesForBlock(block_id.asCompilandSym());
1478 variables = sc.comp_unit->GetVariableList(false);
1480 variables = std::make_shared<VariableList>();
1481 sc.comp_unit->SetVariableList(variables);
1483 return ParseVariablesForCompileUnit(*sc.comp_unit, *variables);
1486 llvm_unreachable("Unreachable!");
1489 CompilerDecl SymbolFileNativePDB::GetDeclForUID(lldb::user_id_t uid) {
1490 clang::Decl *decl = m_ast->GetOrCreateDeclForUid(PdbSymUid(uid));
1492 return m_ast->ToCompilerDecl(*decl);
1496 SymbolFileNativePDB::GetDeclContextForUID(lldb::user_id_t uid) {
1497 clang::DeclContext *context =
1498 m_ast->GetOrCreateDeclContextForUid(PdbSymUid(uid));
1502 return m_ast->ToCompilerDeclContext(*context);
1506 SymbolFileNativePDB::GetDeclContextContainingUID(lldb::user_id_t uid) {
1507 clang::DeclContext *context = m_ast->GetParentDeclContext(PdbSymUid(uid));
1508 return m_ast->ToCompilerDeclContext(*context);
1511 Type *SymbolFileNativePDB::ResolveTypeUID(lldb::user_id_t type_uid) {
1512 auto iter = m_types.find(type_uid);
1513 // lldb should not be passing us non-sensical type uids. the only way it
1514 // could have a type uid in the first place is if we handed it out, in which
1515 // case we should know about the type. However, that doesn't mean we've
1516 // instantiated it yet. We can vend out a UID for a future type. So if the
1517 // type doesn't exist, let's instantiate it now.
1518 if (iter != m_types.end())
1519 return &*iter->second;
1521 PdbSymUid uid(type_uid);
1522 lldbassert(uid.kind() == PdbSymUidKind::Type);
1523 PdbTypeSymId type_id = uid.asTypeSym();
1524 if (type_id.index.isNoneType())
1527 TypeSP type_sp = CreateAndCacheType(type_id);
1531 llvm::Optional<SymbolFile::ArrayInfo>
1532 SymbolFileNativePDB::GetDynamicArrayInfoForUID(
1533 lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) {
1538 bool SymbolFileNativePDB::CompleteType(CompilerType &compiler_type) {
1539 clang::QualType qt =
1540 clang::QualType::getFromOpaquePtr(compiler_type.GetOpaqueQualType());
1542 return m_ast->CompleteType(qt);
1545 size_t SymbolFileNativePDB::GetTypes(lldb_private::SymbolContextScope *sc_scope,
1546 TypeClass type_mask,
1547 lldb_private::TypeList &type_list) {
1552 SymbolFileNativePDB::FindNamespace(const ConstString &name,
1553 const CompilerDeclContext *parent_decl_ctx) {
1558 SymbolFileNativePDB::GetTypeSystemForLanguage(lldb::LanguageType language) {
1560 m_obj_file->GetModule()->GetTypeSystemForLanguage(language);
1562 type_system->SetSymbolFile(this);
1566 ConstString SymbolFileNativePDB::GetPluginName() {
1567 static ConstString g_name("pdb");
1571 uint32_t SymbolFileNativePDB::GetPluginVersion() { return 1; }