| //===-- SymbolFileNativePDB.cpp ---------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SymbolFileNativePDB.h" |
| |
| #include "clang/AST/Attr.h" |
| #include "clang/AST/CharUnits.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/Type.h" |
| |
| #include "Plugins/Language/CPlusPlus/MSVCUndecoratedNameParser.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/StreamBuffer.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Symbol/ClangASTContext.h" |
| #include "lldb/Symbol/ClangASTImporter.h" |
| #include "lldb/Symbol/ClangExternalASTSourceCommon.h" |
| #include "lldb/Symbol/ClangUtil.h" |
| #include "lldb/Symbol/CompileUnit.h" |
| #include "lldb/Symbol/LineTable.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Symbol/SymbolContext.h" |
| #include "lldb/Symbol/SymbolVendor.h" |
| #include "lldb/Symbol/Variable.h" |
| #include "lldb/Symbol/VariableList.h" |
| |
| #include "llvm/DebugInfo/CodeView/CVRecord.h" |
| #include "llvm/DebugInfo/CodeView/CVTypeVisitor.h" |
| #include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h" |
| #include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h" |
| #include "llvm/DebugInfo/CodeView/RecordName.h" |
| #include "llvm/DebugInfo/CodeView/SymbolDeserializer.h" |
| #include "llvm/DebugInfo/CodeView/SymbolRecordHelpers.h" |
| #include "llvm/DebugInfo/CodeView/TypeDeserializer.h" |
| #include "llvm/DebugInfo/PDB/Native/DbiStream.h" |
| #include "llvm/DebugInfo/PDB/Native/GlobalsStream.h" |
| #include "llvm/DebugInfo/PDB/Native/InfoStream.h" |
| #include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h" |
| #include "llvm/DebugInfo/PDB/Native/PDBFile.h" |
| #include "llvm/DebugInfo/PDB/Native/SymbolStream.h" |
| #include "llvm/DebugInfo/PDB/Native/TpiStream.h" |
| #include "llvm/DebugInfo/PDB/PDBTypes.h" |
| #include "llvm/Demangle/MicrosoftDemangle.h" |
| #include "llvm/Object/COFF.h" |
| #include "llvm/Support/Allocator.h" |
| #include "llvm/Support/BinaryStreamReader.h" |
| #include "llvm/Support/Error.h" |
| #include "llvm/Support/ErrorOr.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| |
| #include "DWARFLocationExpression.h" |
| #include "PdbAstBuilder.h" |
| #include "PdbSymUid.h" |
| #include "PdbUtil.h" |
| #include "UdtRecordCompleter.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace npdb; |
| using namespace llvm::codeview; |
| using namespace llvm::pdb; |
| |
| static lldb::LanguageType TranslateLanguage(PDB_Lang lang) { |
| switch (lang) { |
| case PDB_Lang::Cpp: |
| return lldb::LanguageType::eLanguageTypeC_plus_plus; |
| case PDB_Lang::C: |
| return lldb::LanguageType::eLanguageTypeC; |
| case PDB_Lang::Swift: |
| return lldb::LanguageType::eLanguageTypeSwift; |
| default: |
| return lldb::LanguageType::eLanguageTypeUnknown; |
| } |
| } |
| |
| static std::unique_ptr<PDBFile> loadPDBFile(std::string PdbPath, |
| llvm::BumpPtrAllocator &Allocator) { |
| llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ErrorOrBuffer = |
| llvm::MemoryBuffer::getFile(PdbPath, /*FileSize=*/-1, |
| /*RequiresNullTerminator=*/false); |
| if (!ErrorOrBuffer) |
| return nullptr; |
| std::unique_ptr<llvm::MemoryBuffer> Buffer = std::move(*ErrorOrBuffer); |
| |
| llvm::StringRef Path = Buffer->getBufferIdentifier(); |
| auto Stream = llvm::make_unique<llvm::MemoryBufferByteStream>( |
| std::move(Buffer), llvm::support::little); |
| |
| auto File = llvm::make_unique<PDBFile>(Path, std::move(Stream), Allocator); |
| if (auto EC = File->parseFileHeaders()) { |
| llvm::consumeError(std::move(EC)); |
| return nullptr; |
| } |
| if (auto EC = File->parseStreamData()) { |
| llvm::consumeError(std::move(EC)); |
| return nullptr; |
| } |
| |
| return File; |
| } |
| |
| static std::unique_ptr<PDBFile> |
| loadMatchingPDBFile(std::string exe_path, llvm::BumpPtrAllocator &allocator) { |
| // Try to find a matching PDB for an EXE. |
| using namespace llvm::object; |
| auto expected_binary = createBinary(exe_path); |
| |
| // If the file isn't a PE/COFF executable, fail. |
| if (!expected_binary) { |
| llvm::consumeError(expected_binary.takeError()); |
| return nullptr; |
| } |
| OwningBinary<Binary> binary = std::move(*expected_binary); |
| |
| auto *obj = llvm::dyn_cast<llvm::object::COFFObjectFile>(binary.getBinary()); |
| if (!obj) |
| return nullptr; |
| const llvm::codeview::DebugInfo *pdb_info = nullptr; |
| |
| // If it doesn't have a debug directory, fail. |
| llvm::StringRef pdb_file; |
| auto ec = obj->getDebugPDBInfo(pdb_info, pdb_file); |
| if (ec) |
| return nullptr; |
| |
| // if the file doesn't exist, is not a pdb, or doesn't have a matching guid, |
| // fail. |
| llvm::file_magic magic; |
| ec = llvm::identify_magic(pdb_file, magic); |
| if (ec || magic != llvm::file_magic::pdb) |
| return nullptr; |
| std::unique_ptr<PDBFile> pdb = loadPDBFile(pdb_file, allocator); |
| if (!pdb) |
| return nullptr; |
| |
| auto expected_info = pdb->getPDBInfoStream(); |
| if (!expected_info) { |
| llvm::consumeError(expected_info.takeError()); |
| return nullptr; |
| } |
| llvm::codeview::GUID guid; |
| memcpy(&guid, pdb_info->PDB70.Signature, 16); |
| |
| if (expected_info->getGuid() != guid) |
| return nullptr; |
| return pdb; |
| } |
| |
| static bool IsFunctionPrologue(const CompilandIndexItem &cci, |
| lldb::addr_t addr) { |
| // FIXME: Implement this. |
| return false; |
| } |
| |
| static bool IsFunctionEpilogue(const CompilandIndexItem &cci, |
| lldb::addr_t addr) { |
| // FIXME: Implement this. |
| return false; |
| } |
| |
| static llvm::StringRef GetSimpleTypeName(SimpleTypeKind kind) { |
| switch (kind) { |
| case SimpleTypeKind::Boolean128: |
| case SimpleTypeKind::Boolean16: |
| case SimpleTypeKind::Boolean32: |
| case SimpleTypeKind::Boolean64: |
| case SimpleTypeKind::Boolean8: |
| return "bool"; |
| case SimpleTypeKind::Byte: |
| case SimpleTypeKind::UnsignedCharacter: |
| return "unsigned char"; |
| case SimpleTypeKind::NarrowCharacter: |
| return "char"; |
| case SimpleTypeKind::SignedCharacter: |
| case SimpleTypeKind::SByte: |
| return "signed char"; |
| case SimpleTypeKind::Character16: |
| return "char16_t"; |
| case SimpleTypeKind::Character32: |
| return "char32_t"; |
| case SimpleTypeKind::Complex80: |
| case SimpleTypeKind::Complex64: |
| case SimpleTypeKind::Complex32: |
| return "complex"; |
| case SimpleTypeKind::Float128: |
| case SimpleTypeKind::Float80: |
| return "long double"; |
| case SimpleTypeKind::Float64: |
| return "double"; |
| case SimpleTypeKind::Float32: |
| return "float"; |
| case SimpleTypeKind::Float16: |
| return "single"; |
| case SimpleTypeKind::Int128: |
| return "__int128"; |
| case SimpleTypeKind::Int64: |
| case SimpleTypeKind::Int64Quad: |
| return "int64_t"; |
| case SimpleTypeKind::Int32: |
| return "int"; |
| case SimpleTypeKind::Int16: |
| return "short"; |
| case SimpleTypeKind::UInt128: |
| return "unsigned __int128"; |
| case SimpleTypeKind::UInt64: |
| case SimpleTypeKind::UInt64Quad: |
| return "uint64_t"; |
| case SimpleTypeKind::HResult: |
| return "HRESULT"; |
| case SimpleTypeKind::UInt32: |
| return "unsigned"; |
| case SimpleTypeKind::UInt16: |
| case SimpleTypeKind::UInt16Short: |
| return "unsigned short"; |
| case SimpleTypeKind::Int32Long: |
| return "long"; |
| case SimpleTypeKind::UInt32Long: |
| return "unsigned long"; |
| case SimpleTypeKind::Void: |
| return "void"; |
| case SimpleTypeKind::WideCharacter: |
| return "wchar_t"; |
| default: |
| return ""; |
| } |
| } |
| |
| static bool IsClassRecord(TypeLeafKind kind) { |
| switch (kind) { |
| case LF_STRUCTURE: |
| case LF_CLASS: |
| case LF_INTERFACE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| void SymbolFileNativePDB::Initialize() { |
| PluginManager::RegisterPlugin(GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), CreateInstance, |
| DebuggerInitialize); |
| } |
| |
| void SymbolFileNativePDB::Terminate() { |
| PluginManager::UnregisterPlugin(CreateInstance); |
| } |
| |
| void SymbolFileNativePDB::DebuggerInitialize(Debugger &debugger) {} |
| |
| ConstString SymbolFileNativePDB::GetPluginNameStatic() { |
| static ConstString g_name("native-pdb"); |
| return g_name; |
| } |
| |
| const char *SymbolFileNativePDB::GetPluginDescriptionStatic() { |
| return "Microsoft PDB debug symbol cross-platform file reader."; |
| } |
| |
| SymbolFile *SymbolFileNativePDB::CreateInstance(ObjectFile *obj_file) { |
| return new SymbolFileNativePDB(obj_file); |
| } |
| |
| SymbolFileNativePDB::SymbolFileNativePDB(ObjectFile *object_file) |
| : SymbolFile(object_file) {} |
| |
| SymbolFileNativePDB::~SymbolFileNativePDB() {} |
| |
| uint32_t SymbolFileNativePDB::CalculateAbilities() { |
| uint32_t abilities = 0; |
| if (!m_obj_file) |
| return 0; |
| |
| if (!m_index) { |
| // Lazily load and match the PDB file, but only do this once. |
| std::unique_ptr<PDBFile> file_up = |
| loadMatchingPDBFile(m_obj_file->GetFileSpec().GetPath(), m_allocator); |
| |
| if (!file_up) { |
| auto module_sp = m_obj_file->GetModule(); |
| if (!module_sp) |
| return 0; |
| // See if any symbol file is specified through `--symfile` option. |
| FileSpec symfile = module_sp->GetSymbolFileFileSpec(); |
| if (!symfile) |
| return 0; |
| file_up = loadPDBFile(symfile.GetPath(), m_allocator); |
| } |
| |
| if (!file_up) |
| return 0; |
| |
| auto expected_index = PdbIndex::create(std::move(file_up)); |
| if (!expected_index) { |
| llvm::consumeError(expected_index.takeError()); |
| return 0; |
| } |
| m_index = std::move(*expected_index); |
| } |
| if (!m_index) |
| return 0; |
| |
| // We don't especially have to be precise here. We only distinguish between |
| // stripped and not stripped. |
| abilities = kAllAbilities; |
| |
| if (m_index->dbi().isStripped()) |
| abilities &= ~(Blocks | LocalVariables); |
| return abilities; |
| } |
| |
| void SymbolFileNativePDB::InitializeObject() { |
| m_obj_load_address = m_obj_file->GetBaseAddress().GetFileAddress(); |
| m_index->SetLoadAddress(m_obj_load_address); |
| m_index->ParseSectionContribs(); |
| |
| TypeSystem *ts = m_obj_file->GetModule()->GetTypeSystemForLanguage( |
| lldb::eLanguageTypeC_plus_plus); |
| if (ts) |
| ts->SetSymbolFile(this); |
| |
| m_ast = llvm::make_unique<PdbAstBuilder>(*m_obj_file, *m_index); |
| } |
| |
| uint32_t SymbolFileNativePDB::GetNumCompileUnits() { |
| const DbiModuleList &modules = m_index->dbi().modules(); |
| uint32_t count = modules.getModuleCount(); |
| if (count == 0) |
| return count; |
| |
| // The linker can inject an additional "dummy" compilation unit into the |
| // PDB. Ignore this special compile unit for our purposes, if it is there. |
| // It is always the last one. |
| DbiModuleDescriptor last = modules.getModuleDescriptor(count - 1); |
| if (last.getModuleName() == "* Linker *") |
| --count; |
| return count; |
| } |
| |
| Block &SymbolFileNativePDB::CreateBlock(PdbCompilandSymId block_id) { |
| CompilandIndexItem *cii = m_index->compilands().GetCompiland(block_id.modi); |
| CVSymbol sym = cii->m_debug_stream.readSymbolAtOffset(block_id.offset); |
| |
| if (sym.kind() == S_GPROC32 || sym.kind() == S_LPROC32) { |
| // This is a function. It must be global. Creating the Function entry for |
| // it automatically creates a block for it. |
| CompUnitSP comp_unit = GetOrCreateCompileUnit(*cii); |
| return GetOrCreateFunction(block_id, *comp_unit)->GetBlock(false); |
| } |
| |
| lldbassert(sym.kind() == S_BLOCK32); |
| |
| // This is a block. Its parent is either a function or another block. In |
| // either case, its parent can be viewed as a block (e.g. a function contains |
| // 1 big block. So just get the parent block and add this block to it. |
| BlockSym block(static_cast<SymbolRecordKind>(sym.kind())); |
| cantFail(SymbolDeserializer::deserializeAs<BlockSym>(sym, block)); |
| lldbassert(block.Parent != 0); |
| PdbCompilandSymId parent_id(block_id.modi, block.Parent); |
| Block &parent_block = GetOrCreateBlock(parent_id); |
| lldb::user_id_t opaque_block_uid = toOpaqueUid(block_id); |
| BlockSP child_block = std::make_shared<Block>(opaque_block_uid); |
| parent_block.AddChild(child_block); |
| |
| m_ast->GetOrCreateBlockDecl(block_id); |
| |
| m_blocks.insert({opaque_block_uid, child_block}); |
| return *child_block; |
| } |
| |
| lldb::FunctionSP SymbolFileNativePDB::CreateFunction(PdbCompilandSymId func_id, |
| CompileUnit &comp_unit) { |
| const CompilandIndexItem *cci = |
| m_index->compilands().GetCompiland(func_id.modi); |
| lldbassert(cci); |
| CVSymbol sym_record = cci->m_debug_stream.readSymbolAtOffset(func_id.offset); |
| |
| lldbassert(sym_record.kind() == S_LPROC32 || sym_record.kind() == S_GPROC32); |
| SegmentOffsetLength sol = GetSegmentOffsetAndLength(sym_record); |
| |
| auto file_vm_addr = m_index->MakeVirtualAddress(sol.so); |
| if (file_vm_addr == LLDB_INVALID_ADDRESS || file_vm_addr == 0) |
| return nullptr; |
| |
| AddressRange func_range(file_vm_addr, sol.length, |
| comp_unit.GetModule()->GetSectionList()); |
| if (!func_range.GetBaseAddress().IsValid()) |
| return nullptr; |
| |
| ProcSym proc(static_cast<SymbolRecordKind>(sym_record.kind())); |
| cantFail(SymbolDeserializer::deserializeAs<ProcSym>(sym_record, proc)); |
| if (proc.FunctionType == TypeIndex::None()) |
| return nullptr; |
| TypeSP func_type = GetOrCreateType(proc.FunctionType); |
| if (!func_type) |
| return nullptr; |
| |
| PdbTypeSymId sig_id(proc.FunctionType, false); |
| Mangled mangled(proc.Name); |
| FunctionSP func_sp = std::make_shared<Function>( |
| &comp_unit, toOpaqueUid(func_id), toOpaqueUid(sig_id), mangled, |
| func_type.get(), func_range); |
| |
| comp_unit.AddFunction(func_sp); |
| |
| m_ast->GetOrCreateFunctionDecl(func_id); |
| |
| return func_sp; |
| } |
| |
| CompUnitSP |
| SymbolFileNativePDB::CreateCompileUnit(const CompilandIndexItem &cci) { |
| lldb::LanguageType lang = |
| cci.m_compile_opts ? TranslateLanguage(cci.m_compile_opts->getLanguage()) |
| : lldb::eLanguageTypeUnknown; |
| |
| LazyBool optimized = eLazyBoolNo; |
| if (cci.m_compile_opts && cci.m_compile_opts->hasOptimizations()) |
| optimized = eLazyBoolYes; |
| |
| llvm::SmallString<64> source_file_name = |
| m_index->compilands().GetMainSourceFile(cci); |
| FileSpec fs(source_file_name); |
| |
| CompUnitSP cu_sp = |
| std::make_shared<CompileUnit>(m_obj_file->GetModule(), nullptr, fs, |
| toOpaqueUid(cci.m_id), lang, optimized); |
| |
| m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex( |
| cci.m_id.modi, cu_sp); |
| return cu_sp; |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::CreateModifierType(PdbTypeSymId type_id, |
| const ModifierRecord &mr, |
| CompilerType ct) { |
| TpiStream &stream = m_index->tpi(); |
| |
| std::string name; |
| if (mr.ModifiedType.isSimple()) |
| name = GetSimpleTypeName(mr.ModifiedType.getSimpleKind()); |
| else |
| name = computeTypeName(stream.typeCollection(), mr.ModifiedType); |
| Declaration decl; |
| lldb::TypeSP modified_type = GetOrCreateType(mr.ModifiedType); |
| |
| return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(name), |
| modified_type->GetByteSize(), nullptr, |
| LLDB_INVALID_UID, Type::eEncodingIsUID, decl, |
| ct, Type::eResolveStateFull); |
| } |
| |
| lldb::TypeSP |
| SymbolFileNativePDB::CreatePointerType(PdbTypeSymId type_id, |
| const llvm::codeview::PointerRecord &pr, |
| CompilerType ct) { |
| TypeSP pointee = GetOrCreateType(pr.ReferentType); |
| if (!pointee) |
| return nullptr; |
| |
| if (pr.isPointerToMember()) { |
| MemberPointerInfo mpi = pr.getMemberInfo(); |
| GetOrCreateType(mpi.ContainingType); |
| } |
| |
| Declaration decl; |
| return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(), |
| pr.getSize(), nullptr, LLDB_INVALID_UID, |
| Type::eEncodingIsUID, decl, ct, |
| Type::eResolveStateFull); |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::CreateSimpleType(TypeIndex ti, |
| CompilerType ct) { |
| uint64_t uid = toOpaqueUid(PdbTypeSymId(ti, false)); |
| if (ti == TypeIndex::NullptrT()) { |
| Declaration decl; |
| return std::make_shared<Type>( |
| uid, this, ConstString("std::nullptr_t"), 0, nullptr, LLDB_INVALID_UID, |
| Type::eEncodingIsUID, decl, ct, Type::eResolveStateFull); |
| } |
| |
| if (ti.getSimpleMode() != SimpleTypeMode::Direct) { |
| TypeSP direct_sp = GetOrCreateType(ti.makeDirect()); |
| uint32_t pointer_size = 0; |
| switch (ti.getSimpleMode()) { |
| case SimpleTypeMode::FarPointer32: |
| case SimpleTypeMode::NearPointer32: |
| pointer_size = 4; |
| break; |
| case SimpleTypeMode::NearPointer64: |
| pointer_size = 8; |
| break; |
| default: |
| // 128-bit and 16-bit pointers unsupported. |
| return nullptr; |
| } |
| Declaration decl; |
| return std::make_shared<Type>( |
| uid, this, ConstString(), pointer_size, nullptr, LLDB_INVALID_UID, |
| Type::eEncodingIsUID, decl, ct, Type::eResolveStateFull); |
| } |
| |
| if (ti.getSimpleKind() == SimpleTypeKind::NotTranslated) |
| return nullptr; |
| |
| size_t size = GetTypeSizeForSimpleKind(ti.getSimpleKind()); |
| llvm::StringRef type_name = GetSimpleTypeName(ti.getSimpleKind()); |
| |
| Declaration decl; |
| return std::make_shared<Type>(uid, this, ConstString(type_name), size, |
| nullptr, LLDB_INVALID_UID, Type::eEncodingIsUID, |
| decl, ct, Type::eResolveStateFull); |
| } |
| |
| static std::string GetUnqualifiedTypeName(const TagRecord &record) { |
| if (!record.hasUniqueName()) { |
| MSVCUndecoratedNameParser parser(record.Name); |
| llvm::ArrayRef<MSVCUndecoratedNameSpecifier> specs = parser.GetSpecifiers(); |
| |
| return specs.back().GetBaseName(); |
| } |
| |
| llvm::ms_demangle::Demangler demangler; |
| StringView sv(record.UniqueName.begin(), record.UniqueName.size()); |
| llvm::ms_demangle::TagTypeNode *ttn = demangler.parseTagUniqueName(sv); |
| if (demangler.Error) |
| return record.Name; |
| |
| llvm::ms_demangle::IdentifierNode *idn = |
| ttn->QualifiedName->getUnqualifiedIdentifier(); |
| return idn->toString(); |
| } |
| |
| lldb::TypeSP |
| SymbolFileNativePDB::CreateClassStructUnion(PdbTypeSymId type_id, |
| const TagRecord &record, |
| size_t size, CompilerType ct) { |
| |
| std::string uname = GetUnqualifiedTypeName(record); |
| |
| // FIXME: Search IPI stream for LF_UDT_MOD_SRC_LINE. |
| Declaration decl; |
| return std::make_shared<Type>(toOpaqueUid(type_id), this, ConstString(uname), |
| size, nullptr, LLDB_INVALID_UID, |
| Type::eEncodingIsUID, decl, ct, |
| Type::eResolveStateForward); |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id, |
| const ClassRecord &cr, |
| CompilerType ct) { |
| return CreateClassStructUnion(type_id, cr, cr.getSize(), ct); |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id, |
| const UnionRecord &ur, |
| CompilerType ct) { |
| return CreateClassStructUnion(type_id, ur, ur.getSize(), ct); |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::CreateTagType(PdbTypeSymId type_id, |
| const EnumRecord &er, |
| CompilerType ct) { |
| std::string uname = GetUnqualifiedTypeName(er); |
| |
| Declaration decl; |
| TypeSP underlying_type = GetOrCreateType(er.UnderlyingType); |
| |
| return std::make_shared<lldb_private::Type>( |
| toOpaqueUid(type_id), this, ConstString(uname), |
| underlying_type->GetByteSize(), nullptr, LLDB_INVALID_UID, |
| lldb_private::Type::eEncodingIsUID, decl, ct, |
| lldb_private::Type::eResolveStateForward); |
| } |
| |
| TypeSP SymbolFileNativePDB::CreateArrayType(PdbTypeSymId type_id, |
| const ArrayRecord &ar, |
| CompilerType ct) { |
| TypeSP element_type = GetOrCreateType(ar.ElementType); |
| |
| Declaration decl; |
| TypeSP array_sp = std::make_shared<lldb_private::Type>( |
| toOpaqueUid(type_id), this, ConstString(), ar.Size, nullptr, |
| LLDB_INVALID_UID, lldb_private::Type::eEncodingIsUID, decl, ct, |
| lldb_private::Type::eResolveStateFull); |
| array_sp->SetEncodingType(element_type.get()); |
| return array_sp; |
| } |
| |
| |
| TypeSP SymbolFileNativePDB::CreateFunctionType(PdbTypeSymId type_id, |
| const MemberFunctionRecord &mfr, |
| CompilerType ct) { |
| Declaration decl; |
| return std::make_shared<lldb_private::Type>( |
| toOpaqueUid(type_id), this, ConstString(), 0, nullptr, LLDB_INVALID_UID, |
| lldb_private::Type::eEncodingIsUID, decl, ct, |
| lldb_private::Type::eResolveStateFull); |
| } |
| |
| TypeSP SymbolFileNativePDB::CreateProcedureType(PdbTypeSymId type_id, |
| const ProcedureRecord &pr, |
| CompilerType ct) { |
| Declaration decl; |
| return std::make_shared<lldb_private::Type>( |
| toOpaqueUid(type_id), this, ConstString(), 0, nullptr, LLDB_INVALID_UID, |
| lldb_private::Type::eEncodingIsUID, decl, ct, |
| lldb_private::Type::eResolveStateFull); |
| } |
| |
| TypeSP SymbolFileNativePDB::CreateType(PdbTypeSymId type_id, CompilerType ct) { |
| if (type_id.index.isSimple()) |
| return CreateSimpleType(type_id.index, ct); |
| |
| TpiStream &stream = type_id.is_ipi ? m_index->ipi() : m_index->tpi(); |
| CVType cvt = stream.getType(type_id.index); |
| |
| if (cvt.kind() == LF_MODIFIER) { |
| ModifierRecord modifier; |
| llvm::cantFail( |
| TypeDeserializer::deserializeAs<ModifierRecord>(cvt, modifier)); |
| return CreateModifierType(type_id, modifier, ct); |
| } |
| |
| if (cvt.kind() == LF_POINTER) { |
| PointerRecord pointer; |
| llvm::cantFail( |
| TypeDeserializer::deserializeAs<PointerRecord>(cvt, pointer)); |
| return CreatePointerType(type_id, pointer, ct); |
| } |
| |
| if (IsClassRecord(cvt.kind())) { |
| ClassRecord cr; |
| llvm::cantFail(TypeDeserializer::deserializeAs<ClassRecord>(cvt, cr)); |
| return CreateTagType(type_id, cr, ct); |
| } |
| |
| if (cvt.kind() == LF_ENUM) { |
| EnumRecord er; |
| llvm::cantFail(TypeDeserializer::deserializeAs<EnumRecord>(cvt, er)); |
| return CreateTagType(type_id, er, ct); |
| } |
| |
| if (cvt.kind() == LF_UNION) { |
| UnionRecord ur; |
| llvm::cantFail(TypeDeserializer::deserializeAs<UnionRecord>(cvt, ur)); |
| return CreateTagType(type_id, ur, ct); |
| } |
| |
| if (cvt.kind() == LF_ARRAY) { |
| ArrayRecord ar; |
| llvm::cantFail(TypeDeserializer::deserializeAs<ArrayRecord>(cvt, ar)); |
| return CreateArrayType(type_id, ar, ct); |
| } |
| |
| if (cvt.kind() == LF_PROCEDURE) { |
| ProcedureRecord pr; |
| llvm::cantFail(TypeDeserializer::deserializeAs<ProcedureRecord>(cvt, pr)); |
| return CreateProcedureType(type_id, pr, ct); |
| } |
| if (cvt.kind() == LF_MFUNCTION) { |
| MemberFunctionRecord mfr; |
| llvm::cantFail(TypeDeserializer::deserializeAs<MemberFunctionRecord>(cvt, mfr)); |
| return CreateFunctionType(type_id, mfr, ct); |
| } |
| |
| return nullptr; |
| } |
| |
| TypeSP SymbolFileNativePDB::CreateAndCacheType(PdbTypeSymId type_id) { |
| // If they search for a UDT which is a forward ref, try and resolve the full |
| // decl and just map the forward ref uid to the full decl record. |
| llvm::Optional<PdbTypeSymId> full_decl_uid; |
| if (IsForwardRefUdt(type_id, m_index->tpi())) { |
| auto expected_full_ti = |
| m_index->tpi().findFullDeclForForwardRef(type_id.index); |
| if (!expected_full_ti) |
| llvm::consumeError(expected_full_ti.takeError()); |
| else if (*expected_full_ti != type_id.index) { |
| full_decl_uid = PdbTypeSymId(*expected_full_ti, false); |
| |
| // It's possible that a lookup would occur for the full decl causing it |
| // to be cached, then a second lookup would occur for the forward decl. |
| // We don't want to create a second full decl, so make sure the full |
| // decl hasn't already been cached. |
| auto full_iter = m_types.find(toOpaqueUid(*full_decl_uid)); |
| if (full_iter != m_types.end()) { |
| TypeSP result = full_iter->second; |
| // Map the forward decl to the TypeSP for the full decl so we can take |
| // the fast path next time. |
| m_types[toOpaqueUid(type_id)] = result; |
| return result; |
| } |
| } |
| } |
| |
| PdbTypeSymId best_decl_id = full_decl_uid ? *full_decl_uid : type_id; |
| |
| clang::QualType qt = m_ast->GetOrCreateType(best_decl_id); |
| |
| TypeSP result = CreateType(best_decl_id, m_ast->ToCompilerType(qt)); |
| if (!result) |
| return nullptr; |
| |
| uint64_t best_uid = toOpaqueUid(best_decl_id); |
| m_types[best_uid] = result; |
| // If we had both a forward decl and a full decl, make both point to the new |
| // type. |
| if (full_decl_uid) |
| m_types[toOpaqueUid(type_id)] = result; |
| |
| return result; |
| } |
| |
| TypeSP SymbolFileNativePDB::GetOrCreateType(PdbTypeSymId type_id) { |
| // We can't use try_emplace / overwrite here because the process of creating |
| // a type could create nested types, which could invalidate iterators. So |
| // we have to do a 2-phase lookup / insert. |
| auto iter = m_types.find(toOpaqueUid(type_id)); |
| if (iter != m_types.end()) |
| return iter->second; |
| |
| TypeSP type = CreateAndCacheType(type_id); |
| if (type) |
| m_obj_file->GetModule()->GetTypeList()->Insert(type); |
| return type; |
| } |
| |
| VariableSP SymbolFileNativePDB::CreateGlobalVariable(PdbGlobalSymId var_id) { |
| CVSymbol sym = m_index->symrecords().readRecord(var_id.offset); |
| if (sym.kind() == S_CONSTANT) |
| return CreateConstantSymbol(var_id, sym); |
| |
| lldb::ValueType scope = eValueTypeInvalid; |
| TypeIndex ti; |
| llvm::StringRef name; |
| lldb::addr_t addr = 0; |
| uint16_t section = 0; |
| uint32_t offset = 0; |
| bool is_external = false; |
| switch (sym.kind()) { |
| case S_GDATA32: |
| is_external = true; |
| LLVM_FALLTHROUGH; |
| case S_LDATA32: { |
| DataSym ds(sym.kind()); |
| llvm::cantFail(SymbolDeserializer::deserializeAs<DataSym>(sym, ds)); |
| ti = ds.Type; |
| scope = (sym.kind() == S_GDATA32) ? eValueTypeVariableGlobal |
| : eValueTypeVariableStatic; |
| name = ds.Name; |
| section = ds.Segment; |
| offset = ds.DataOffset; |
| addr = m_index->MakeVirtualAddress(ds.Segment, ds.DataOffset); |
| break; |
| } |
| case S_GTHREAD32: |
| is_external = true; |
| LLVM_FALLTHROUGH; |
| case S_LTHREAD32: { |
| ThreadLocalDataSym tlds(sym.kind()); |
| llvm::cantFail( |
| SymbolDeserializer::deserializeAs<ThreadLocalDataSym>(sym, tlds)); |
| ti = tlds.Type; |
| name = tlds.Name; |
| section = tlds.Segment; |
| offset = tlds.DataOffset; |
| addr = m_index->MakeVirtualAddress(tlds.Segment, tlds.DataOffset); |
| scope = eValueTypeVariableThreadLocal; |
| break; |
| } |
| default: |
| llvm_unreachable("unreachable!"); |
| } |
| |
| CompUnitSP comp_unit; |
| llvm::Optional<uint16_t> modi = m_index->GetModuleIndexForVa(addr); |
| if (modi) { |
| CompilandIndexItem &cci = m_index->compilands().GetOrCreateCompiland(*modi); |
| comp_unit = GetOrCreateCompileUnit(cci); |
| } |
| |
| Declaration decl; |
| PdbTypeSymId tid(ti, false); |
| SymbolFileTypeSP type_sp = |
| std::make_shared<SymbolFileType>(*this, toOpaqueUid(tid)); |
| Variable::RangeList ranges; |
| |
| m_ast->GetOrCreateVariableDecl(var_id); |
| |
| DWARFExpression location = MakeGlobalLocationExpression( |
| section, offset, GetObjectFile()->GetModule()); |
| |
| std::string global_name("::"); |
| global_name += name; |
| VariableSP var_sp = std::make_shared<Variable>( |
| toOpaqueUid(var_id), name.str().c_str(), global_name.c_str(), type_sp, |
| scope, comp_unit.get(), ranges, &decl, location, is_external, false, |
| false); |
| var_sp->SetLocationIsConstantValueData(false); |
| |
| return var_sp; |
| } |
| |
| lldb::VariableSP |
| SymbolFileNativePDB::CreateConstantSymbol(PdbGlobalSymId var_id, |
| const CVSymbol &cvs) { |
| TpiStream &tpi = m_index->tpi(); |
| ConstantSym constant(cvs.kind()); |
| |
| llvm::cantFail(SymbolDeserializer::deserializeAs<ConstantSym>(cvs, constant)); |
| std::string global_name("::"); |
| global_name += constant.Name; |
| PdbTypeSymId tid(constant.Type, false); |
| SymbolFileTypeSP type_sp = |
| std::make_shared<SymbolFileType>(*this, toOpaqueUid(tid)); |
| |
| Declaration decl; |
| Variable::RangeList ranges; |
| ModuleSP module = GetObjectFile()->GetModule(); |
| DWARFExpression location = MakeConstantLocationExpression( |
| constant.Type, tpi, constant.Value, module); |
| |
| VariableSP var_sp = std::make_shared<Variable>( |
| toOpaqueUid(var_id), constant.Name.str().c_str(), global_name.c_str(), |
| type_sp, eValueTypeVariableGlobal, module.get(), ranges, &decl, location, |
| false, false, false); |
| var_sp->SetLocationIsConstantValueData(true); |
| return var_sp; |
| } |
| |
| VariableSP |
| SymbolFileNativePDB::GetOrCreateGlobalVariable(PdbGlobalSymId var_id) { |
| auto emplace_result = m_global_vars.try_emplace(toOpaqueUid(var_id), nullptr); |
| if (emplace_result.second) |
| emplace_result.first->second = CreateGlobalVariable(var_id); |
| |
| return emplace_result.first->second; |
| } |
| |
| lldb::TypeSP SymbolFileNativePDB::GetOrCreateType(TypeIndex ti) { |
| return GetOrCreateType(PdbTypeSymId(ti, false)); |
| } |
| |
| FunctionSP SymbolFileNativePDB::GetOrCreateFunction(PdbCompilandSymId func_id, |
| CompileUnit &comp_unit) { |
| auto emplace_result = m_functions.try_emplace(toOpaqueUid(func_id), nullptr); |
| if (emplace_result.second) |
| emplace_result.first->second = CreateFunction(func_id, comp_unit); |
| |
| return emplace_result.first->second; |
| } |
| |
| CompUnitSP |
| SymbolFileNativePDB::GetOrCreateCompileUnit(const CompilandIndexItem &cci) { |
| |
| auto emplace_result = |
| m_compilands.try_emplace(toOpaqueUid(cci.m_id), nullptr); |
| if (emplace_result.second) |
| emplace_result.first->second = CreateCompileUnit(cci); |
| |
| lldbassert(emplace_result.first->second); |
| return emplace_result.first->second; |
| } |
| |
| Block &SymbolFileNativePDB::GetOrCreateBlock(PdbCompilandSymId block_id) { |
| auto iter = m_blocks.find(toOpaqueUid(block_id)); |
| if (iter != m_blocks.end()) |
| return *iter->second; |
| |
| return CreateBlock(block_id); |
| } |
| |
| void SymbolFileNativePDB::ParseDeclsForContext( |
| lldb_private::CompilerDeclContext decl_ctx) { |
| clang::DeclContext *context = m_ast->FromCompilerDeclContext(decl_ctx); |
| if (!context) |
| return; |
| m_ast->ParseDeclsForContext(*context); |
| } |
| |
| lldb::CompUnitSP SymbolFileNativePDB::ParseCompileUnitAtIndex(uint32_t index) { |
| if (index >= GetNumCompileUnits()) |
| return CompUnitSP(); |
| lldbassert(index < UINT16_MAX); |
| if (index >= UINT16_MAX) |
| return nullptr; |
| |
| CompilandIndexItem &item = m_index->compilands().GetOrCreateCompiland(index); |
| |
| return GetOrCreateCompileUnit(item); |
| } |
| |
| lldb::LanguageType SymbolFileNativePDB::ParseLanguage(CompileUnit &comp_unit) { |
| PdbSymUid uid(comp_unit.GetID()); |
| lldbassert(uid.kind() == PdbSymUidKind::Compiland); |
| |
| CompilandIndexItem *item = |
| m_index->compilands().GetCompiland(uid.asCompiland().modi); |
| lldbassert(item); |
| if (!item->m_compile_opts) |
| return lldb::eLanguageTypeUnknown; |
| |
| return TranslateLanguage(item->m_compile_opts->getLanguage()); |
| } |
| |
| void SymbolFileNativePDB::AddSymbols(Symtab &symtab) { return; } |
| |
| size_t SymbolFileNativePDB::ParseFunctions(CompileUnit &comp_unit) { |
| PdbSymUid uid{comp_unit.GetID()}; |
| lldbassert(uid.kind() == PdbSymUidKind::Compiland); |
| uint16_t modi = uid.asCompiland().modi; |
| CompilandIndexItem &cii = m_index->compilands().GetOrCreateCompiland(modi); |
| |
| size_t count = comp_unit.GetNumFunctions(); |
| const CVSymbolArray &syms = cii.m_debug_stream.getSymbolArray(); |
| for (auto iter = syms.begin(); iter != syms.end(); ++iter) { |
| if (iter->kind() != S_LPROC32 && iter->kind() != S_GPROC32) |
| continue; |
| |
| PdbCompilandSymId sym_id{modi, iter.offset()}; |
| |
| FunctionSP func = GetOrCreateFunction(sym_id, comp_unit); |
| } |
| |
| size_t new_count = comp_unit.GetNumFunctions(); |
| lldbassert(new_count >= count); |
| return new_count - count; |
| } |
| |
| static bool NeedsResolvedCompileUnit(uint32_t resolve_scope) { |
| // If any of these flags are set, we need to resolve the compile unit. |
| uint32_t flags = eSymbolContextCompUnit; |
| flags |= eSymbolContextVariable; |
| flags |= eSymbolContextFunction; |
| flags |= eSymbolContextBlock; |
| flags |= eSymbolContextLineEntry; |
| return (resolve_scope & flags) != 0; |
| } |
| |
| uint32_t SymbolFileNativePDB::ResolveSymbolContext( |
| const Address &addr, SymbolContextItem resolve_scope, SymbolContext &sc) { |
| uint32_t resolved_flags = 0; |
| lldb::addr_t file_addr = addr.GetFileAddress(); |
| |
| if (NeedsResolvedCompileUnit(resolve_scope)) { |
| llvm::Optional<uint16_t> modi = m_index->GetModuleIndexForVa(file_addr); |
| if (!modi) |
| return 0; |
| CompilandIndexItem *cci = m_index->compilands().GetCompiland(*modi); |
| if (!cci) |
| return 0; |
| |
| sc.comp_unit = GetOrCreateCompileUnit(*cci).get(); |
| resolved_flags |= eSymbolContextCompUnit; |
| } |
| |
| if (resolve_scope & eSymbolContextFunction || |
| resolve_scope & eSymbolContextBlock) { |
| lldbassert(sc.comp_unit); |
| std::vector<SymbolAndUid> matches = m_index->FindSymbolsByVa(file_addr); |
| // Search the matches in reverse. This way if there are multiple matches |
| // (for example we are 3 levels deep in a nested scope) it will find the |
| // innermost one first. |
| for (const auto &match : llvm::reverse(matches)) { |
| if (match.uid.kind() != PdbSymUidKind::CompilandSym) |
| continue; |
| |
| PdbCompilandSymId csid = match.uid.asCompilandSym(); |
| CVSymbol cvs = m_index->ReadSymbolRecord(csid); |
| PDB_SymType type = CVSymToPDBSym(cvs.kind()); |
| if (type != PDB_SymType::Function && type != PDB_SymType::Block) |
| continue; |
| if (type == PDB_SymType::Function) { |
| sc.function = GetOrCreateFunction(csid, *sc.comp_unit).get(); |
| sc.block = sc.GetFunctionBlock(); |
| } |
| |
| if (type == PDB_SymType::Block) { |
| sc.block = &GetOrCreateBlock(csid); |
| sc.function = sc.block->CalculateSymbolContextFunction(); |
| } |
| resolved_flags |= eSymbolContextFunction; |
| resolved_flags |= eSymbolContextBlock; |
| break; |
| } |
| } |
| |
| if (resolve_scope & eSymbolContextLineEntry) { |
| lldbassert(sc.comp_unit); |
| if (auto *line_table = sc.comp_unit->GetLineTable()) { |
| if (line_table->FindLineEntryByAddress(addr, sc.line_entry)) |
| resolved_flags |= eSymbolContextLineEntry; |
| } |
| } |
| |
| return resolved_flags; |
| } |
| |
| uint32_t SymbolFileNativePDB::ResolveSymbolContext( |
| const FileSpec &file_spec, uint32_t line, bool check_inlines, |
| lldb::SymbolContextItem resolve_scope, SymbolContextList &sc_list) { |
| return 0; |
| } |
| |
| static void AppendLineEntryToSequence(LineTable &table, LineSequence &sequence, |
| const CompilandIndexItem &cci, |
| lldb::addr_t base_addr, |
| uint32_t file_number, |
| const LineFragmentHeader &block, |
| const LineNumberEntry &cur) { |
| LineInfo cur_info(cur.Flags); |
| |
| if (cur_info.isAlwaysStepInto() || cur_info.isNeverStepInto()) |
| return; |
| |
| uint64_t addr = base_addr + cur.Offset; |
| |
| bool is_statement = cur_info.isStatement(); |
| bool is_prologue = IsFunctionPrologue(cci, addr); |
| bool is_epilogue = IsFunctionEpilogue(cci, addr); |
| |
| uint32_t lno = cur_info.getStartLine(); |
| |
| table.AppendLineEntryToSequence(&sequence, addr, lno, 0, file_number, |
| is_statement, false, is_prologue, is_epilogue, |
| false); |
| } |
| |
| static void TerminateLineSequence(LineTable &table, |
| const LineFragmentHeader &block, |
| lldb::addr_t base_addr, uint32_t file_number, |
| uint32_t last_line, |
| std::unique_ptr<LineSequence> seq) { |
| // The end is always a terminal entry, so insert it regardless. |
| table.AppendLineEntryToSequence(seq.get(), base_addr + block.CodeSize, |
| last_line, 0, file_number, false, false, |
| false, false, true); |
| table.InsertSequence(seq.release()); |
| } |
| |
| bool SymbolFileNativePDB::ParseLineTable(CompileUnit &comp_unit) { |
| // Unfortunately LLDB is set up to parse the entire compile unit line table |
| // all at once, even if all it really needs is line info for a specific |
| // function. In the future it would be nice if it could set the sc.m_function |
| // member, and we could only get the line info for the function in question. |
| PdbSymUid cu_id(comp_unit.GetID()); |
| lldbassert(cu_id.kind() == PdbSymUidKind::Compiland); |
| CompilandIndexItem *cci = |
| m_index->compilands().GetCompiland(cu_id.asCompiland().modi); |
| lldbassert(cci); |
| auto line_table = llvm::make_unique<LineTable>(&comp_unit); |
| |
| // This is basically a copy of the .debug$S subsections from all original COFF |
| // object files merged together with address relocations applied. We are |
| // looking for all DEBUG_S_LINES subsections. |
| for (const DebugSubsectionRecord &dssr : |
| cci->m_debug_stream.getSubsectionsArray()) { |
| if (dssr.kind() != DebugSubsectionKind::Lines) |
| continue; |
| |
| DebugLinesSubsectionRef lines; |
| llvm::BinaryStreamReader reader(dssr.getRecordData()); |
| if (auto EC = lines.initialize(reader)) { |
| llvm::consumeError(std::move(EC)); |
| return false; |
| } |
| |
| const LineFragmentHeader *lfh = lines.header(); |
| uint64_t virtual_addr = |
| m_index->MakeVirtualAddress(lfh->RelocSegment, lfh->RelocOffset); |
| |
| const auto &checksums = cci->m_strings.checksums().getArray(); |
| const auto &strings = cci->m_strings.strings(); |
| for (const LineColumnEntry &group : lines) { |
| // Indices in this structure are actually offsets of records in the |
| // DEBUG_S_FILECHECKSUMS subsection. Those entries then have an index |
| // into the global PDB string table. |
| auto iter = checksums.at(group.NameIndex); |
| if (iter == checksums.end()) |
| continue; |
| |
| llvm::Expected<llvm::StringRef> efn = |
| strings.getString(iter->FileNameOffset); |
| if (!efn) { |
| llvm::consumeError(efn.takeError()); |
| continue; |
| } |
| |
| // LLDB wants the index of the file in the list of support files. |
| auto fn_iter = llvm::find(cci->m_file_list, *efn); |
| lldbassert(fn_iter != cci->m_file_list.end()); |
| // LLDB support file indices are 1-based. |
| uint32_t file_index = |
| 1 + std::distance(cci->m_file_list.begin(), fn_iter); |
| |
| std::unique_ptr<LineSequence> sequence( |
| line_table->CreateLineSequenceContainer()); |
| lldbassert(!group.LineNumbers.empty()); |
| |
| for (const LineNumberEntry &entry : group.LineNumbers) { |
| AppendLineEntryToSequence(*line_table, *sequence, *cci, virtual_addr, |
| file_index, *lfh, entry); |
| } |
| LineInfo last_line(group.LineNumbers.back().Flags); |
| TerminateLineSequence(*line_table, *lfh, virtual_addr, file_index, |
| last_line.getEndLine(), std::move(sequence)); |
| } |
| } |
| |
| if (line_table->GetSize() == 0) |
| return false; |
| |
| comp_unit.SetLineTable(line_table.release()); |
| return true; |
| } |
| |
| bool SymbolFileNativePDB::ParseDebugMacros(CompileUnit &comp_unit) { |
| // PDB doesn't contain information about macros |
| return false; |
| } |
| |
| bool SymbolFileNativePDB::ParseSupportFiles(CompileUnit &comp_unit, |
| FileSpecList &support_files) { |
| PdbSymUid cu_id(comp_unit.GetID()); |
| lldbassert(cu_id.kind() == PdbSymUidKind::Compiland); |
| CompilandIndexItem *cci = |
| m_index->compilands().GetCompiland(cu_id.asCompiland().modi); |
| lldbassert(cci); |
| |
| for (llvm::StringRef f : cci->m_file_list) { |
| FileSpec::Style style = |
| f.startswith("/") ? FileSpec::Style::posix : FileSpec::Style::windows; |
| FileSpec spec(f, style); |
| support_files.Append(spec); |
| } |
| |
| llvm::SmallString<64> main_source_file = |
| m_index->compilands().GetMainSourceFile(*cci); |
| FileSpec::Style style = main_source_file.startswith("/") |
| ? FileSpec::Style::posix |
| : FileSpec::Style::windows; |
| FileSpec spec(main_source_file, style); |
| support_files.Insert(0, spec); |
| return true; |
| } |
| |
| bool SymbolFileNativePDB::ParseImportedModules( |
| const SymbolContext &sc, std::vector<SourceModule> &imported_modules) { |
| // PDB does not yet support module debug info |
| return false; |
| } |
| |
| size_t SymbolFileNativePDB::ParseBlocksRecursive(Function &func) { |
| GetOrCreateBlock(PdbSymUid(func.GetID()).asCompilandSym()); |
| // FIXME: Parse child blocks |
| return 1; |
| } |
| |
| void SymbolFileNativePDB::DumpClangAST(Stream &s) { m_ast->Dump(s); } |
| |
| uint32_t SymbolFileNativePDB::FindGlobalVariables( |
| ConstString name, const CompilerDeclContext *parent_decl_ctx, |
| uint32_t max_matches, VariableList &variables) { |
| using SymbolAndOffset = std::pair<uint32_t, llvm::codeview::CVSymbol>; |
| |
| std::vector<SymbolAndOffset> results = m_index->globals().findRecordsByName( |
| name.GetStringRef(), m_index->symrecords()); |
| for (const SymbolAndOffset &result : results) { |
| VariableSP var; |
| switch (result.second.kind()) { |
| case SymbolKind::S_GDATA32: |
| case SymbolKind::S_LDATA32: |
| case SymbolKind::S_GTHREAD32: |
| case SymbolKind::S_LTHREAD32: |
| case SymbolKind::S_CONSTANT: { |
| PdbGlobalSymId global(result.first, false); |
| var = GetOrCreateGlobalVariable(global); |
| variables.AddVariable(var); |
| break; |
| } |
| default: |
| continue; |
| } |
| } |
| return variables.GetSize(); |
| } |
| |
| uint32_t SymbolFileNativePDB::FindFunctions( |
| ConstString name, const CompilerDeclContext *parent_decl_ctx, |
| FunctionNameType name_type_mask, bool include_inlines, bool append, |
| SymbolContextList &sc_list) { |
| // For now we only support lookup by method name. |
| if (!(name_type_mask & eFunctionNameTypeMethod)) |
| return 0; |
| |
| using SymbolAndOffset = std::pair<uint32_t, llvm::codeview::CVSymbol>; |
| |
| std::vector<SymbolAndOffset> matches = m_index->globals().findRecordsByName( |
| name.GetStringRef(), m_index->symrecords()); |
| for (const SymbolAndOffset &match : matches) { |
| if (match.second.kind() != S_PROCREF && match.second.kind() != S_LPROCREF) |
| continue; |
| ProcRefSym proc(match.second.kind()); |
| cantFail(SymbolDeserializer::deserializeAs<ProcRefSym>(match.second, proc)); |
| |
| if (!IsValidRecord(proc)) |
| continue; |
| |
| CompilandIndexItem &cci = |
| m_index->compilands().GetOrCreateCompiland(proc.modi()); |
| SymbolContext sc; |
| |
| sc.comp_unit = GetOrCreateCompileUnit(cci).get(); |
| PdbCompilandSymId func_id(proc.modi(), proc.SymOffset); |
| sc.function = GetOrCreateFunction(func_id, *sc.comp_unit).get(); |
| |
| sc_list.Append(sc); |
| } |
| |
| return sc_list.GetSize(); |
| } |
| |
| uint32_t SymbolFileNativePDB::FindFunctions(const RegularExpression ®ex, |
| bool include_inlines, bool append, |
| SymbolContextList &sc_list) { |
| return 0; |
| } |
| |
| uint32_t SymbolFileNativePDB::FindTypes( |
| ConstString name, const CompilerDeclContext *parent_decl_ctx, |
| bool append, uint32_t max_matches, |
| llvm::DenseSet<SymbolFile *> &searched_symbol_files, TypeMap &types) { |
| if (!append) |
| types.Clear(); |
| if (!name) |
| return 0; |
| |
| searched_symbol_files.clear(); |
| searched_symbol_files.insert(this); |
| |
| // There is an assumption 'name' is not a regex |
| size_t match_count = FindTypesByName(name.GetStringRef(), max_matches, types); |
| |
| return match_count; |
| } |
| |
| size_t |
| SymbolFileNativePDB::FindTypes(const std::vector<CompilerContext> &context, |
| bool append, TypeMap &types) { |
| return 0; |
| } |
| |
| size_t SymbolFileNativePDB::FindTypesByName(llvm::StringRef name, |
| uint32_t max_matches, |
| TypeMap &types) { |
| |
| size_t match_count = 0; |
| std::vector<TypeIndex> matches = m_index->tpi().findRecordsByName(name); |
| if (max_matches > 0 && max_matches < matches.size()) |
| matches.resize(max_matches); |
| |
| for (TypeIndex ti : matches) { |
| TypeSP type = GetOrCreateType(ti); |
| if (!type) |
| continue; |
| |
| types.Insert(type); |
| ++match_count; |
| } |
| return match_count; |
| } |
| |
| size_t SymbolFileNativePDB::ParseTypes(CompileUnit &comp_unit) { |
| // Only do the full type scan the first time. |
| if (m_done_full_type_scan) |
| return 0; |
| |
| size_t old_count = m_obj_file->GetModule()->GetTypeList()->GetSize(); |
| LazyRandomTypeCollection &types = m_index->tpi().typeCollection(); |
| |
| // First process the entire TPI stream. |
| for (auto ti = types.getFirst(); ti; ti = types.getNext(*ti)) { |
| TypeSP type = GetOrCreateType(*ti); |
| if (type) |
| (void)type->GetFullCompilerType(); |
| } |
| |
| // Next look for S_UDT records in the globals stream. |
| for (const uint32_t gid : m_index->globals().getGlobalsTable()) { |
| PdbGlobalSymId global{gid, false}; |
| CVSymbol sym = m_index->ReadSymbolRecord(global); |
| if (sym.kind() != S_UDT) |
| continue; |
| |
| UDTSym udt = llvm::cantFail(SymbolDeserializer::deserializeAs<UDTSym>(sym)); |
| bool is_typedef = true; |
| if (IsTagRecord(PdbTypeSymId{udt.Type, false}, m_index->tpi())) { |
| CVType cvt = m_index->tpi().getType(udt.Type); |
| llvm::StringRef name = CVTagRecord::create(cvt).name(); |
| if (name == udt.Name) |
| is_typedef = false; |
| } |
| |
| if (is_typedef) |
| GetOrCreateTypedef(global); |
| } |
| |
| size_t new_count = m_obj_file->GetModule()->GetTypeList()->GetSize(); |
| |
| m_done_full_type_scan = true; |
| |
| return new_count - old_count; |
| } |
| |
| size_t |
| SymbolFileNativePDB::ParseVariablesForCompileUnit(CompileUnit &comp_unit, |
| VariableList &variables) { |
| PdbSymUid sym_uid(comp_unit.GetID()); |
| lldbassert(sym_uid.kind() == PdbSymUidKind::Compiland); |
| return 0; |
| } |
| |
| VariableSP SymbolFileNativePDB::CreateLocalVariable(PdbCompilandSymId scope_id, |
| PdbCompilandSymId var_id, |
| bool is_param) { |
| ModuleSP module = GetObjectFile()->GetModule(); |
| Block &block = GetOrCreateBlock(scope_id); |
| VariableInfo var_info = |
| GetVariableLocationInfo(*m_index, var_id, block, module); |
| if (!var_info.location || !var_info.ranges) |
| return nullptr; |
| |
| CompilandIndexItem *cii = m_index->compilands().GetCompiland(var_id.modi); |
| CompUnitSP comp_unit_sp = GetOrCreateCompileUnit(*cii); |
| TypeSP type_sp = GetOrCreateType(var_info.type); |
| std::string name = var_info.name.str(); |
| Declaration decl; |
| SymbolFileTypeSP sftype = |
| std::make_shared<SymbolFileType>(*this, type_sp->GetID()); |
| |
| ValueType var_scope = |
| is_param ? eValueTypeVariableArgument : eValueTypeVariableLocal; |
| VariableSP var_sp = std::make_shared<Variable>( |
| toOpaqueUid(var_id), name.c_str(), name.c_str(), sftype, var_scope, |
| comp_unit_sp.get(), *var_info.ranges, &decl, *var_info.location, false, |
| false, false); |
| |
| if (!is_param) |
| m_ast->GetOrCreateVariableDecl(scope_id, var_id); |
| |
| m_local_variables[toOpaqueUid(var_id)] = var_sp; |
| return var_sp; |
| } |
| |
| VariableSP SymbolFileNativePDB::GetOrCreateLocalVariable( |
| PdbCompilandSymId scope_id, PdbCompilandSymId var_id, bool is_param) { |
| auto iter = m_local_variables.find(toOpaqueUid(var_id)); |
| if (iter != m_local_variables.end()) |
| return iter->second; |
| |
| return CreateLocalVariable(scope_id, var_id, is_param); |
| } |
| |
| TypeSP SymbolFileNativePDB::CreateTypedef(PdbGlobalSymId id) { |
| CVSymbol sym = m_index->ReadSymbolRecord(id); |
| lldbassert(sym.kind() == SymbolKind::S_UDT); |
| |
| UDTSym udt = llvm::cantFail(SymbolDeserializer::deserializeAs<UDTSym>(sym)); |
| |
| TypeSP target_type = GetOrCreateType(udt.Type); |
| |
| (void)m_ast->GetOrCreateTypedefDecl(id); |
| |
| Declaration decl; |
| return std::make_shared<lldb_private::Type>( |
| toOpaqueUid(id), this, ConstString(udt.Name), target_type->GetByteSize(), |
| nullptr, target_type->GetID(), lldb_private::Type::eEncodingIsTypedefUID, |
| decl, target_type->GetForwardCompilerType(), |
| lldb_private::Type::eResolveStateForward); |
| } |
| |
| TypeSP SymbolFileNativePDB::GetOrCreateTypedef(PdbGlobalSymId id) { |
| auto iter = m_types.find(toOpaqueUid(id)); |
| if (iter != m_types.end()) |
| return iter->second; |
| |
| return CreateTypedef(id); |
| } |
| |
| size_t SymbolFileNativePDB::ParseVariablesForBlock(PdbCompilandSymId block_id) { |
| Block &block = GetOrCreateBlock(block_id); |
| |
| size_t count = 0; |
| |
| CompilandIndexItem *cii = m_index->compilands().GetCompiland(block_id.modi); |
| CVSymbol sym = cii->m_debug_stream.readSymbolAtOffset(block_id.offset); |
| uint32_t params_remaining = 0; |
| switch (sym.kind()) { |
| case S_GPROC32: |
| case S_LPROC32: { |
| ProcSym proc(static_cast<SymbolRecordKind>(sym.kind())); |
| cantFail(SymbolDeserializer::deserializeAs<ProcSym>(sym, proc)); |
| CVType signature = m_index->tpi().getType(proc.FunctionType); |
| ProcedureRecord sig; |
| cantFail(TypeDeserializer::deserializeAs<ProcedureRecord>(signature, sig)); |
| params_remaining = sig.getParameterCount(); |
| break; |
| } |
| case S_BLOCK32: |
| break; |
| default: |
| lldbassert(false && "Symbol is not a block!"); |
| return 0; |
| } |
| |
| VariableListSP variables = block.GetBlockVariableList(false); |
| if (!variables) { |
| variables = std::make_shared<VariableList>(); |
| block.SetVariableList(variables); |
| } |
| |
| CVSymbolArray syms = limitSymbolArrayToScope( |
| cii->m_debug_stream.getSymbolArray(), block_id.offset); |
| |
| // Skip the first record since it's a PROC32 or BLOCK32, and there's |
| // no point examining it since we know it's not a local variable. |
| syms.drop_front(); |
| auto iter = syms.begin(); |
| auto end = syms.end(); |
| |
| while (iter != end) { |
| uint32_t record_offset = iter.offset(); |
| CVSymbol variable_cvs = *iter; |
| PdbCompilandSymId child_sym_id(block_id.modi, record_offset); |
| ++iter; |
| |
| // If this is a block, recurse into its children and then skip it. |
| if (variable_cvs.kind() == S_BLOCK32) { |
| uint32_t block_end = getScopeEndOffset(variable_cvs); |
| count += ParseVariablesForBlock(child_sym_id); |
| iter = syms.at(block_end); |
| continue; |
| } |
| |
| bool is_param = params_remaining > 0; |
| VariableSP variable; |
| switch (variable_cvs.kind()) { |
| case S_REGREL32: |
| case S_REGISTER: |
| case S_LOCAL: |
| variable = GetOrCreateLocalVariable(block_id, child_sym_id, is_param); |
| if (is_param) |
| --params_remaining; |
| if (variable) |
| variables->AddVariableIfUnique(variable); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| // Pass false for set_children, since we call this recursively so that the |
| // children will call this for themselves. |
| block.SetDidParseVariables(true, false); |
| |
| return count; |
| } |
| |
| size_t SymbolFileNativePDB::ParseVariablesForContext(const SymbolContext &sc) { |
| lldbassert(sc.function || sc.comp_unit); |
| |
| VariableListSP variables; |
| if (sc.block) { |
| PdbSymUid block_id(sc.block->GetID()); |
| |
| size_t count = ParseVariablesForBlock(block_id.asCompilandSym()); |
| return count; |
| } |
| |
| if (sc.function) { |
| PdbSymUid block_id(sc.function->GetID()); |
| |
| size_t count = ParseVariablesForBlock(block_id.asCompilandSym()); |
| return count; |
| } |
| |
| if (sc.comp_unit) { |
| variables = sc.comp_unit->GetVariableList(false); |
| if (!variables) { |
| variables = std::make_shared<VariableList>(); |
| sc.comp_unit->SetVariableList(variables); |
| } |
| return ParseVariablesForCompileUnit(*sc.comp_unit, *variables); |
| } |
| |
| llvm_unreachable("Unreachable!"); |
| } |
| |
| CompilerDecl SymbolFileNativePDB::GetDeclForUID(lldb::user_id_t uid) { |
| clang::Decl *decl = m_ast->GetOrCreateDeclForUid(PdbSymUid(uid)); |
| |
| return m_ast->ToCompilerDecl(*decl); |
| } |
| |
| CompilerDeclContext |
| SymbolFileNativePDB::GetDeclContextForUID(lldb::user_id_t uid) { |
| clang::DeclContext *context = |
| m_ast->GetOrCreateDeclContextForUid(PdbSymUid(uid)); |
| if (!context) |
| return {}; |
| |
| return m_ast->ToCompilerDeclContext(*context); |
| } |
| |
| CompilerDeclContext |
| SymbolFileNativePDB::GetDeclContextContainingUID(lldb::user_id_t uid) { |
| clang::DeclContext *context = m_ast->GetParentDeclContext(PdbSymUid(uid)); |
| return m_ast->ToCompilerDeclContext(*context); |
| } |
| |
| Type *SymbolFileNativePDB::ResolveTypeUID(lldb::user_id_t type_uid) { |
| auto iter = m_types.find(type_uid); |
| // lldb should not be passing us non-sensical type uids. the only way it |
| // could have a type uid in the first place is if we handed it out, in which |
| // case we should know about the type. However, that doesn't mean we've |
| // instantiated it yet. We can vend out a UID for a future type. So if the |
| // type doesn't exist, let's instantiate it now. |
| if (iter != m_types.end()) |
| return &*iter->second; |
| |
| PdbSymUid uid(type_uid); |
| lldbassert(uid.kind() == PdbSymUidKind::Type); |
| PdbTypeSymId type_id = uid.asTypeSym(); |
| if (type_id.index.isNoneType()) |
| return nullptr; |
| |
| TypeSP type_sp = CreateAndCacheType(type_id); |
| return &*type_sp; |
| } |
| |
| llvm::Optional<SymbolFile::ArrayInfo> |
| SymbolFileNativePDB::GetDynamicArrayInfoForUID( |
| lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) { |
| return llvm::None; |
| } |
| |
| |
| bool SymbolFileNativePDB::CompleteType(CompilerType &compiler_type) { |
| clang::QualType qt = |
| clang::QualType::getFromOpaquePtr(compiler_type.GetOpaqueQualType()); |
| |
| return m_ast->CompleteType(qt); |
| } |
| |
| size_t SymbolFileNativePDB::GetTypes(lldb_private::SymbolContextScope *sc_scope, |
| TypeClass type_mask, |
| lldb_private::TypeList &type_list) { |
| return 0; |
| } |
| |
| CompilerDeclContext |
| SymbolFileNativePDB::FindNamespace(ConstString name, |
| const CompilerDeclContext *parent_decl_ctx) { |
| return {}; |
| } |
| |
| TypeSystem * |
| SymbolFileNativePDB::GetTypeSystemForLanguage(lldb::LanguageType language) { |
| auto type_system = |
| m_obj_file->GetModule()->GetTypeSystemForLanguage(language); |
| if (type_system) |
| type_system->SetSymbolFile(this); |
| return type_system; |
| } |
| |
| ConstString SymbolFileNativePDB::GetPluginName() { |
| static ConstString g_name("pdb"); |
| return g_name; |
| } |
| |
| uint32_t SymbolFileNativePDB::GetPluginVersion() { return 1; } |
