diff options
Diffstat (limited to 'lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp')
| -rw-r--r-- | lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp | 2066 |
1 files changed, 2066 insertions, 0 deletions
diff --git a/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp new file mode 100644 index 000000000000..854e735b5f83 --- /dev/null +++ b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp @@ -0,0 +1,2066 @@ +//===-- SymbolFilePDB.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 "SymbolFilePDB.h" + +#include "PDBASTParser.h" +#include "PDBLocationToDWARFExpression.h" + +#include "clang/Lex/Lexer.h" + +#include "lldb/Core/Module.h" +#include "lldb/Core/PluginManager.h" +#include "lldb/Symbol/ClangASTContext.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/TypeList.h" +#include "lldb/Symbol/TypeMap.h" +#include "lldb/Symbol/Variable.h" +#include "lldb/Utility/Log.h" +#include "lldb/Utility/RegularExpression.h" + +#include "llvm/DebugInfo/PDB/GenericError.h" +#include "llvm/DebugInfo/PDB/IPDBDataStream.h" +#include "llvm/DebugInfo/PDB/IPDBEnumChildren.h" +#include "llvm/DebugInfo/PDB/IPDBLineNumber.h" +#include "llvm/DebugInfo/PDB/IPDBSectionContrib.h" +#include "llvm/DebugInfo/PDB/IPDBSourceFile.h" +#include "llvm/DebugInfo/PDB/IPDBTable.h" +#include "llvm/DebugInfo/PDB/PDBSymbol.h" +#include "llvm/DebugInfo/PDB/PDBSymbolBlock.h" +#include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h" +#include "llvm/DebugInfo/PDB/PDBSymbolCompilandDetails.h" +#include "llvm/DebugInfo/PDB/PDBSymbolData.h" +#include "llvm/DebugInfo/PDB/PDBSymbolExe.h" +#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h" +#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugEnd.h" +#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h" +#include "llvm/DebugInfo/PDB/PDBSymbolPublicSymbol.h" +#include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h" +#include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h" +#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h" + +#include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h" +#include "Plugins/Language/CPlusPlus/MSVCUndecoratedNameParser.h" +#include "Plugins/SymbolFile/NativePDB/SymbolFileNativePDB.h" + +#include <regex> + +using namespace lldb; +using namespace lldb_private; +using namespace llvm::pdb; + +namespace { +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; + } +} + +bool ShouldAddLine(uint32_t requested_line, uint32_t actual_line, + uint32_t addr_length) { + return ((requested_line == 0 || actual_line == requested_line) && + addr_length > 0); +} +} // namespace + +static bool ShouldUseNativeReader() { +#if defined(_WIN32) + llvm::StringRef use_native = ::getenv("LLDB_USE_NATIVE_PDB_READER"); + return use_native.equals_lower("on") || use_native.equals_lower("yes") || + use_native.equals_lower("1") || use_native.equals_lower("true"); +#else + return true; +#endif +} + +void SymbolFilePDB::Initialize() { + if (ShouldUseNativeReader()) { + npdb::SymbolFileNativePDB::Initialize(); + } else { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), CreateInstance, + DebuggerInitialize); + } +} + +void SymbolFilePDB::Terminate() { + if (ShouldUseNativeReader()) { + npdb::SymbolFileNativePDB::Terminate(); + } else { + PluginManager::UnregisterPlugin(CreateInstance); + } +} + +void SymbolFilePDB::DebuggerInitialize(lldb_private::Debugger &debugger) {} + +lldb_private::ConstString SymbolFilePDB::GetPluginNameStatic() { + static ConstString g_name("pdb"); + return g_name; +} + +const char *SymbolFilePDB::GetPluginDescriptionStatic() { + return "Microsoft PDB debug symbol file reader."; +} + +lldb_private::SymbolFile * +SymbolFilePDB::CreateInstance(ObjectFileSP objfile_sp) { + return new SymbolFilePDB(std::move(objfile_sp)); +} + +SymbolFilePDB::SymbolFilePDB(lldb::ObjectFileSP objfile_sp) + : SymbolFile(std::move(objfile_sp)), m_session_up(), m_global_scope_up() {} + +SymbolFilePDB::~SymbolFilePDB() {} + +uint32_t SymbolFilePDB::CalculateAbilities() { + uint32_t abilities = 0; + if (!m_objfile_sp) + return 0; + + if (!m_session_up) { + // Lazily load and match the PDB file, but only do this once. + std::string exePath = m_objfile_sp->GetFileSpec().GetPath(); + auto error = loadDataForEXE(PDB_ReaderType::DIA, llvm::StringRef(exePath), + m_session_up); + if (error) { + llvm::consumeError(std::move(error)); + auto module_sp = m_objfile_sp->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; + error = loadDataForPDB(PDB_ReaderType::DIA, + llvm::StringRef(symfile.GetPath()), m_session_up); + if (error) { + llvm::consumeError(std::move(error)); + return 0; + } + } + } + if (!m_session_up) + return 0; + + auto enum_tables_up = m_session_up->getEnumTables(); + if (!enum_tables_up) + return 0; + while (auto table_up = enum_tables_up->getNext()) { + if (table_up->getItemCount() == 0) + continue; + auto type = table_up->getTableType(); + switch (type) { + case PDB_TableType::Symbols: + // This table represents a store of symbols with types listed in + // PDBSym_Type + abilities |= (CompileUnits | Functions | Blocks | GlobalVariables | + LocalVariables | VariableTypes); + break; + case PDB_TableType::LineNumbers: + abilities |= LineTables; + break; + default: + break; + } + } + return abilities; +} + +void SymbolFilePDB::InitializeObject() { + lldb::addr_t obj_load_address = + m_objfile_sp->GetBaseAddress().GetFileAddress(); + lldbassert(obj_load_address && obj_load_address != LLDB_INVALID_ADDRESS); + m_session_up->setLoadAddress(obj_load_address); + if (!m_global_scope_up) + m_global_scope_up = m_session_up->getGlobalScope(); + lldbassert(m_global_scope_up.get()); +} + +uint32_t SymbolFilePDB::CalculateNumCompileUnits() { + auto compilands = m_global_scope_up->findAllChildren<PDBSymbolCompiland>(); + if (!compilands) + return 0; + + // The linker could link *.dll (compiland language = LINK), or import + // *.dll. For example, a compiland with name `Import:KERNEL32.dll` could be + // found as a child of the global scope (PDB executable). Usually, such + // compilands contain `thunk` symbols in which we are not interested for + // now. However we still count them in the compiland list. If we perform + // any compiland related activity, like finding symbols through + // llvm::pdb::IPDBSession methods, such compilands will all be searched + // automatically no matter whether we include them or not. + uint32_t compile_unit_count = compilands->getChildCount(); + + // 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. + auto last_compiland_up = compilands->getChildAtIndex(compile_unit_count - 1); + lldbassert(last_compiland_up.get()); + std::string name = last_compiland_up->getName(); + if (name == "* Linker *") + --compile_unit_count; + return compile_unit_count; +} + +void SymbolFilePDB::GetCompileUnitIndex( + const llvm::pdb::PDBSymbolCompiland &pdb_compiland, uint32_t &index) { + auto results_up = m_global_scope_up->findAllChildren<PDBSymbolCompiland>(); + if (!results_up) + return; + auto uid = pdb_compiland.getSymIndexId(); + for (uint32_t cu_idx = 0; cu_idx < GetNumCompileUnits(); ++cu_idx) { + auto compiland_up = results_up->getChildAtIndex(cu_idx); + if (!compiland_up) + continue; + if (compiland_up->getSymIndexId() == uid) { + index = cu_idx; + return; + } + } + index = UINT32_MAX; + return; +} + +std::unique_ptr<llvm::pdb::PDBSymbolCompiland> +SymbolFilePDB::GetPDBCompilandByUID(uint32_t uid) { + return m_session_up->getConcreteSymbolById<PDBSymbolCompiland>(uid); +} + +lldb::CompUnitSP SymbolFilePDB::ParseCompileUnitAtIndex(uint32_t index) { + if (index >= GetNumCompileUnits()) + return CompUnitSP(); + + // Assuming we always retrieve same compilands listed in same order through + // `PDBSymbolExe::findAllChildren` method, otherwise using `index` to get a + // compile unit makes no sense. + auto results = m_global_scope_up->findAllChildren<PDBSymbolCompiland>(); + if (!results) + return CompUnitSP(); + auto compiland_up = results->getChildAtIndex(index); + if (!compiland_up) + return CompUnitSP(); + return ParseCompileUnitForUID(compiland_up->getSymIndexId(), index); +} + +lldb::LanguageType SymbolFilePDB::ParseLanguage(CompileUnit &comp_unit) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + auto compiland_up = GetPDBCompilandByUID(comp_unit.GetID()); + if (!compiland_up) + return lldb::eLanguageTypeUnknown; + auto details = compiland_up->findOneChild<PDBSymbolCompilandDetails>(); + if (!details) + return lldb::eLanguageTypeUnknown; + return TranslateLanguage(details->getLanguage()); +} + +lldb_private::Function * +SymbolFilePDB::ParseCompileUnitFunctionForPDBFunc(const PDBSymbolFunc &pdb_func, + CompileUnit &comp_unit) { + if (FunctionSP result = comp_unit.FindFunctionByUID(pdb_func.getSymIndexId())) + return result.get(); + + auto file_vm_addr = pdb_func.getVirtualAddress(); + if (file_vm_addr == LLDB_INVALID_ADDRESS || file_vm_addr == 0) + return nullptr; + + auto func_length = pdb_func.getLength(); + AddressRange func_range = + AddressRange(file_vm_addr, func_length, + GetObjectFile()->GetModule()->GetSectionList()); + if (!func_range.GetBaseAddress().IsValid()) + return nullptr; + + lldb_private::Type *func_type = ResolveTypeUID(pdb_func.getSymIndexId()); + if (!func_type) + return nullptr; + + user_id_t func_type_uid = pdb_func.getSignatureId(); + + Mangled mangled = GetMangledForPDBFunc(pdb_func); + + FunctionSP func_sp = + std::make_shared<Function>(&comp_unit, pdb_func.getSymIndexId(), + func_type_uid, mangled, func_type, func_range); + + comp_unit.AddFunction(func_sp); + + LanguageType lang = ParseLanguage(comp_unit); + auto type_system_or_err = GetTypeSystemForLanguage(lang); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to parse PDBFunc"); + return nullptr; + } + + ClangASTContext *clang_type_system = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_type_system) + return nullptr; + clang_type_system->GetPDBParser()->GetDeclForSymbol(pdb_func); + + return func_sp.get(); +} + +size_t SymbolFilePDB::ParseFunctions(CompileUnit &comp_unit) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + size_t func_added = 0; + auto compiland_up = GetPDBCompilandByUID(comp_unit.GetID()); + if (!compiland_up) + return 0; + auto results_up = compiland_up->findAllChildren<PDBSymbolFunc>(); + if (!results_up) + return 0; + while (auto pdb_func_up = results_up->getNext()) { + auto func_sp = comp_unit.FindFunctionByUID(pdb_func_up->getSymIndexId()); + if (!func_sp) { + if (ParseCompileUnitFunctionForPDBFunc(*pdb_func_up, comp_unit)) + ++func_added; + } + } + return func_added; +} + +bool SymbolFilePDB::ParseLineTable(CompileUnit &comp_unit) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (comp_unit.GetLineTable()) + return true; + return ParseCompileUnitLineTable(comp_unit, 0); +} + +bool SymbolFilePDB::ParseDebugMacros(CompileUnit &comp_unit) { + // PDB doesn't contain information about macros + return false; +} + +bool SymbolFilePDB::ParseSupportFiles( + CompileUnit &comp_unit, lldb_private::FileSpecList &support_files) { + + // In theory this is unnecessary work for us, because all of this information + // is easily (and quickly) accessible from DebugInfoPDB, so caching it a + // second time seems like a waste. Unfortunately, there's no good way around + // this short of a moderate refactor since SymbolVendor depends on being able + // to cache this list. + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + auto compiland_up = GetPDBCompilandByUID(comp_unit.GetID()); + if (!compiland_up) + return false; + auto files = m_session_up->getSourceFilesForCompiland(*compiland_up); + if (!files || files->getChildCount() == 0) + return false; + + while (auto file = files->getNext()) { + FileSpec spec(file->getFileName(), FileSpec::Style::windows); + support_files.AppendIfUnique(spec); + } + + // LLDB uses the DWARF-like file numeration (one based), + // the zeroth file is the compile unit itself + support_files.Insert(0, comp_unit); + + return true; +} + +bool SymbolFilePDB::ParseImportedModules( + const lldb_private::SymbolContext &sc, + std::vector<SourceModule> &imported_modules) { + // PDB does not yet support module debug info + return false; +} + +static size_t ParseFunctionBlocksForPDBSymbol( + uint64_t func_file_vm_addr, const llvm::pdb::PDBSymbol *pdb_symbol, + lldb_private::Block *parent_block, bool is_top_parent) { + assert(pdb_symbol && parent_block); + + size_t num_added = 0; + switch (pdb_symbol->getSymTag()) { + case PDB_SymType::Block: + case PDB_SymType::Function: { + Block *block = nullptr; + auto &raw_sym = pdb_symbol->getRawSymbol(); + if (auto *pdb_func = llvm::dyn_cast<PDBSymbolFunc>(pdb_symbol)) { + if (pdb_func->hasNoInlineAttribute()) + break; + if (is_top_parent) + block = parent_block; + else + break; + } else if (llvm::dyn_cast<PDBSymbolBlock>(pdb_symbol)) { + auto uid = pdb_symbol->getSymIndexId(); + if (parent_block->FindBlockByID(uid)) + break; + if (raw_sym.getVirtualAddress() < func_file_vm_addr) + break; + + auto block_sp = std::make_shared<Block>(pdb_symbol->getSymIndexId()); + parent_block->AddChild(block_sp); + block = block_sp.get(); + } else + llvm_unreachable("Unexpected PDB symbol!"); + + block->AddRange(Block::Range( + raw_sym.getVirtualAddress() - func_file_vm_addr, raw_sym.getLength())); + block->FinalizeRanges(); + ++num_added; + + auto results_up = pdb_symbol->findAllChildren(); + if (!results_up) + break; + while (auto symbol_up = results_up->getNext()) { + num_added += ParseFunctionBlocksForPDBSymbol( + func_file_vm_addr, symbol_up.get(), block, false); + } + } break; + default: + break; + } + return num_added; +} + +size_t SymbolFilePDB::ParseBlocksRecursive(Function &func) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + size_t num_added = 0; + auto uid = func.GetID(); + auto pdb_func_up = m_session_up->getConcreteSymbolById<PDBSymbolFunc>(uid); + if (!pdb_func_up) + return 0; + Block &parent_block = func.GetBlock(false); + num_added = ParseFunctionBlocksForPDBSymbol( + pdb_func_up->getVirtualAddress(), pdb_func_up.get(), &parent_block, true); + return num_added; +} + +size_t SymbolFilePDB::ParseTypes(CompileUnit &comp_unit) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + + size_t num_added = 0; + auto compiland = GetPDBCompilandByUID(comp_unit.GetID()); + if (!compiland) + return 0; + + auto ParseTypesByTagFn = [&num_added, this](const PDBSymbol &raw_sym) { + std::unique_ptr<IPDBEnumSymbols> results; + PDB_SymType tags_to_search[] = {PDB_SymType::Enum, PDB_SymType::Typedef, + PDB_SymType::UDT}; + for (auto tag : tags_to_search) { + results = raw_sym.findAllChildren(tag); + if (!results || results->getChildCount() == 0) + continue; + while (auto symbol = results->getNext()) { + switch (symbol->getSymTag()) { + case PDB_SymType::Enum: + case PDB_SymType::UDT: + case PDB_SymType::Typedef: + break; + default: + continue; + } + + // This should cause the type to get cached and stored in the `m_types` + // lookup. + if (auto type = ResolveTypeUID(symbol->getSymIndexId())) { + // Resolve the type completely to avoid a completion + // (and so a list change, which causes an iterators invalidation) + // during a TypeList dumping + type->GetFullCompilerType(); + ++num_added; + } + } + } + }; + + ParseTypesByTagFn(*compiland); + + // Also parse global types particularly coming from this compiland. + // Unfortunately, PDB has no compiland information for each global type. We + // have to parse them all. But ensure we only do this once. + static bool parse_all_global_types = false; + if (!parse_all_global_types) { + ParseTypesByTagFn(*m_global_scope_up); + parse_all_global_types = true; + } + return num_added; +} + +size_t +SymbolFilePDB::ParseVariablesForContext(const lldb_private::SymbolContext &sc) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (!sc.comp_unit) + return 0; + + size_t num_added = 0; + if (sc.function) { + auto pdb_func = m_session_up->getConcreteSymbolById<PDBSymbolFunc>( + sc.function->GetID()); + if (!pdb_func) + return 0; + + num_added += ParseVariables(sc, *pdb_func); + sc.function->GetBlock(false).SetDidParseVariables(true, true); + } else if (sc.comp_unit) { + auto compiland = GetPDBCompilandByUID(sc.comp_unit->GetID()); + if (!compiland) + return 0; + + if (sc.comp_unit->GetVariableList(false)) + return 0; + + auto results = m_global_scope_up->findAllChildren<PDBSymbolData>(); + if (results && results->getChildCount()) { + while (auto result = results->getNext()) { + auto cu_id = GetCompilandId(*result); + // FIXME: We are not able to determine variable's compile unit. + if (cu_id == 0) + continue; + + if (cu_id == sc.comp_unit->GetID()) + num_added += ParseVariables(sc, *result); + } + } + + // FIXME: A `file static` or `global constant` variable appears both in + // compiland's children and global scope's children with unexpectedly + // different symbol's Id making it ambiguous. + + // FIXME: 'local constant', for example, const char var[] = "abc", declared + // in a function scope, can't be found in PDB. + + // Parse variables in this compiland. + num_added += ParseVariables(sc, *compiland); + } + + return num_added; +} + +lldb_private::Type *SymbolFilePDB::ResolveTypeUID(lldb::user_id_t type_uid) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + auto find_result = m_types.find(type_uid); + if (find_result != m_types.end()) + return find_result->second.get(); + + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to ResolveTypeUID"); + return nullptr; + } + + ClangASTContext *clang_type_system = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_type_system) + return nullptr; + PDBASTParser *pdb = clang_type_system->GetPDBParser(); + if (!pdb) + return nullptr; + + auto pdb_type = m_session_up->getSymbolById(type_uid); + if (pdb_type == nullptr) + return nullptr; + + lldb::TypeSP result = pdb->CreateLLDBTypeFromPDBType(*pdb_type); + if (result) { + m_types.insert(std::make_pair(type_uid, result)); + GetTypeList().Insert(result); + } + return result.get(); +} + +llvm::Optional<SymbolFile::ArrayInfo> SymbolFilePDB::GetDynamicArrayInfoForUID( + lldb::user_id_t type_uid, const lldb_private::ExecutionContext *exe_ctx) { + return llvm::None; +} + +bool SymbolFilePDB::CompleteType(lldb_private::CompilerType &compiler_type) { + std::lock_guard<std::recursive_mutex> guard( + GetObjectFile()->GetModule()->GetMutex()); + + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to get dynamic array info for UID"); + return false; + } + + ClangASTContext *clang_ast_ctx = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + + if (!clang_ast_ctx) + return false; + + PDBASTParser *pdb = clang_ast_ctx->GetPDBParser(); + if (!pdb) + return false; + + return pdb->CompleteTypeFromPDB(compiler_type); +} + +lldb_private::CompilerDecl SymbolFilePDB::GetDeclForUID(lldb::user_id_t uid) { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to get decl for UID"); + return CompilerDecl(); + } + + ClangASTContext *clang_ast_ctx = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_ast_ctx) + return CompilerDecl(); + + PDBASTParser *pdb = clang_ast_ctx->GetPDBParser(); + if (!pdb) + return CompilerDecl(); + + auto symbol = m_session_up->getSymbolById(uid); + if (!symbol) + return CompilerDecl(); + + auto decl = pdb->GetDeclForSymbol(*symbol); + if (!decl) + return CompilerDecl(); + + return CompilerDecl(clang_ast_ctx, decl); +} + +lldb_private::CompilerDeclContext +SymbolFilePDB::GetDeclContextForUID(lldb::user_id_t uid) { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to get DeclContext for UID"); + return CompilerDeclContext(); + } + + ClangASTContext *clang_ast_ctx = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_ast_ctx) + return CompilerDeclContext(); + + PDBASTParser *pdb = clang_ast_ctx->GetPDBParser(); + if (!pdb) + return CompilerDeclContext(); + + auto symbol = m_session_up->getSymbolById(uid); + if (!symbol) + return CompilerDeclContext(); + + auto decl_context = pdb->GetDeclContextForSymbol(*symbol); + if (!decl_context) + return GetDeclContextContainingUID(uid); + + return CompilerDeclContext(clang_ast_ctx, decl_context); +} + +lldb_private::CompilerDeclContext +SymbolFilePDB::GetDeclContextContainingUID(lldb::user_id_t uid) { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to get DeclContext containing UID"); + return CompilerDeclContext(); + } + + ClangASTContext *clang_ast_ctx = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_ast_ctx) + return CompilerDeclContext(); + + PDBASTParser *pdb = clang_ast_ctx->GetPDBParser(); + if (!pdb) + return CompilerDeclContext(); + + auto symbol = m_session_up->getSymbolById(uid); + if (!symbol) + return CompilerDeclContext(); + + auto decl_context = pdb->GetDeclContextContainingSymbol(*symbol); + assert(decl_context); + + return CompilerDeclContext(clang_ast_ctx, decl_context); +} + +void SymbolFilePDB::ParseDeclsForContext( + lldb_private::CompilerDeclContext decl_ctx) { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to parse decls for context"); + return; + } + + ClangASTContext *clang_ast_ctx = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_ast_ctx) + return; + + PDBASTParser *pdb = clang_ast_ctx->GetPDBParser(); + if (!pdb) + return; + + pdb->ParseDeclsForDeclContext( + static_cast<clang::DeclContext *>(decl_ctx.GetOpaqueDeclContext())); +} + +uint32_t +SymbolFilePDB::ResolveSymbolContext(const lldb_private::Address &so_addr, + SymbolContextItem resolve_scope, + lldb_private::SymbolContext &sc) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + uint32_t resolved_flags = 0; + if (resolve_scope & eSymbolContextCompUnit || + resolve_scope & eSymbolContextVariable || + resolve_scope & eSymbolContextFunction || + resolve_scope & eSymbolContextBlock || + resolve_scope & eSymbolContextLineEntry) { + auto cu_sp = GetCompileUnitContainsAddress(so_addr); + if (!cu_sp) { + if (resolved_flags & eSymbolContextVariable) { + // TODO: Resolve variables + } + return 0; + } + sc.comp_unit = cu_sp.get(); + resolved_flags |= eSymbolContextCompUnit; + lldbassert(sc.module_sp == cu_sp->GetModule()); + } + + if (resolve_scope & eSymbolContextFunction || + resolve_scope & eSymbolContextBlock) { + addr_t file_vm_addr = so_addr.GetFileAddress(); + auto symbol_up = + m_session_up->findSymbolByAddress(file_vm_addr, PDB_SymType::Function); + if (symbol_up) { + auto *pdb_func = llvm::dyn_cast<PDBSymbolFunc>(symbol_up.get()); + assert(pdb_func); + auto func_uid = pdb_func->getSymIndexId(); + sc.function = sc.comp_unit->FindFunctionByUID(func_uid).get(); + if (sc.function == nullptr) + sc.function = + ParseCompileUnitFunctionForPDBFunc(*pdb_func, *sc.comp_unit); + if (sc.function) { + resolved_flags |= eSymbolContextFunction; + if (resolve_scope & eSymbolContextBlock) { + auto block_symbol = m_session_up->findSymbolByAddress( + file_vm_addr, PDB_SymType::Block); + auto block_id = block_symbol ? block_symbol->getSymIndexId() + : sc.function->GetID(); + sc.block = sc.function->GetBlock(true).FindBlockByID(block_id); + if (sc.block) + resolved_flags |= eSymbolContextBlock; + } + } + } + } + + if (resolve_scope & eSymbolContextLineEntry) { + if (auto *line_table = sc.comp_unit->GetLineTable()) { + Address addr(so_addr); + if (line_table->FindLineEntryByAddress(addr, sc.line_entry)) + resolved_flags |= eSymbolContextLineEntry; + } + } + + return resolved_flags; +} + +uint32_t SymbolFilePDB::ResolveSymbolContext( + const lldb_private::FileSpec &file_spec, uint32_t line, bool check_inlines, + SymbolContextItem resolve_scope, lldb_private::SymbolContextList &sc_list) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + const size_t old_size = sc_list.GetSize(); + if (resolve_scope & lldb::eSymbolContextCompUnit) { + // Locate all compilation units with line numbers referencing the specified + // file. For example, if `file_spec` is <vector>, then this should return + // all source files and header files that reference <vector>, either + // directly or indirectly. + auto compilands = m_session_up->findCompilandsForSourceFile( + file_spec.GetPath(), PDB_NameSearchFlags::NS_CaseInsensitive); + + if (!compilands) + return 0; + + // For each one, either find its previously parsed data or parse it afresh + // and add it to the symbol context list. + while (auto compiland = compilands->getNext()) { + // If we're not checking inlines, then don't add line information for + // this file unless the FileSpec matches. For inline functions, we don't + // have to match the FileSpec since they could be defined in headers + // other than file specified in FileSpec. + if (!check_inlines) { + std::string source_file = compiland->getSourceFileFullPath(); + if (source_file.empty()) + continue; + FileSpec this_spec(source_file, FileSpec::Style::windows); + bool need_full_match = !file_spec.GetDirectory().IsEmpty(); + if (FileSpec::Compare(file_spec, this_spec, need_full_match) != 0) + continue; + } + + SymbolContext sc; + auto cu = ParseCompileUnitForUID(compiland->getSymIndexId()); + if (!cu) + continue; + sc.comp_unit = cu.get(); + sc.module_sp = cu->GetModule(); + + // If we were asked to resolve line entries, add all entries to the line + // table that match the requested line (or all lines if `line` == 0). + if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock | + eSymbolContextLineEntry)) { + bool has_line_table = ParseCompileUnitLineTable(*sc.comp_unit, line); + + if ((resolve_scope & eSymbolContextLineEntry) && !has_line_table) { + // The query asks for line entries, but we can't get them for the + // compile unit. This is not normal for `line` = 0. So just assert + // it. + assert(line && "Couldn't get all line entries!\n"); + + // Current compiland does not have the requested line. Search next. + continue; + } + + if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) { + if (!has_line_table) + continue; + + auto *line_table = sc.comp_unit->GetLineTable(); + lldbassert(line_table); + + uint32_t num_line_entries = line_table->GetSize(); + // Skip the terminal line entry. + --num_line_entries; + + // If `line `!= 0, see if we can resolve function for each line entry + // in the line table. + for (uint32_t line_idx = 0; line && line_idx < num_line_entries; + ++line_idx) { + if (!line_table->GetLineEntryAtIndex(line_idx, sc.line_entry)) + continue; + + auto file_vm_addr = + sc.line_entry.range.GetBaseAddress().GetFileAddress(); + if (file_vm_addr == LLDB_INVALID_ADDRESS || file_vm_addr == 0) + continue; + + auto symbol_up = m_session_up->findSymbolByAddress( + file_vm_addr, PDB_SymType::Function); + if (symbol_up) { + auto func_uid = symbol_up->getSymIndexId(); + sc.function = sc.comp_unit->FindFunctionByUID(func_uid).get(); + if (sc.function == nullptr) { + auto pdb_func = llvm::dyn_cast<PDBSymbolFunc>(symbol_up.get()); + assert(pdb_func); + sc.function = ParseCompileUnitFunctionForPDBFunc(*pdb_func, + *sc.comp_unit); + } + if (sc.function && (resolve_scope & eSymbolContextBlock)) { + Block &block = sc.function->GetBlock(true); + sc.block = block.FindBlockByID(sc.function->GetID()); + } + } + sc_list.Append(sc); + } + } else if (has_line_table) { + // We can parse line table for the compile unit. But no query to + // resolve function or block. We append `sc` to the list anyway. + sc_list.Append(sc); + } + } else { + // No query for line entry, function or block. But we have a valid + // compile unit, append `sc` to the list. + sc_list.Append(sc); + } + } + } + return sc_list.GetSize() - old_size; +} + +std::string SymbolFilePDB::GetMangledForPDBData(const PDBSymbolData &pdb_data) { + // Cache public names at first + if (m_public_names.empty()) + if (auto result_up = + m_global_scope_up->findAllChildren(PDB_SymType::PublicSymbol)) + while (auto symbol_up = result_up->getNext()) + if (auto addr = symbol_up->getRawSymbol().getVirtualAddress()) + m_public_names[addr] = symbol_up->getRawSymbol().getName(); + + // Look up the name in the cache + return m_public_names.lookup(pdb_data.getVirtualAddress()); +} + +VariableSP SymbolFilePDB::ParseVariableForPDBData( + const lldb_private::SymbolContext &sc, + const llvm::pdb::PDBSymbolData &pdb_data) { + VariableSP var_sp; + uint32_t var_uid = pdb_data.getSymIndexId(); + auto result = m_variables.find(var_uid); + if (result != m_variables.end()) + return result->second; + + ValueType scope = eValueTypeInvalid; + bool is_static_member = false; + bool is_external = false; + bool is_artificial = false; + + switch (pdb_data.getDataKind()) { + case PDB_DataKind::Global: + scope = eValueTypeVariableGlobal; + is_external = true; + break; + case PDB_DataKind::Local: + scope = eValueTypeVariableLocal; + break; + case PDB_DataKind::FileStatic: + scope = eValueTypeVariableStatic; + break; + case PDB_DataKind::StaticMember: + is_static_member = true; + scope = eValueTypeVariableStatic; + break; + case PDB_DataKind::Member: + scope = eValueTypeVariableStatic; + break; + case PDB_DataKind::Param: + scope = eValueTypeVariableArgument; + break; + case PDB_DataKind::Constant: + scope = eValueTypeConstResult; + break; + default: + break; + } + + switch (pdb_data.getLocationType()) { + case PDB_LocType::TLS: + scope = eValueTypeVariableThreadLocal; + break; + case PDB_LocType::RegRel: { + // It is a `this` pointer. + if (pdb_data.getDataKind() == PDB_DataKind::ObjectPtr) { + scope = eValueTypeVariableArgument; + is_artificial = true; + } + } break; + default: + break; + } + + Declaration decl; + if (!is_artificial && !pdb_data.isCompilerGenerated()) { + if (auto lines = pdb_data.getLineNumbers()) { + if (auto first_line = lines->getNext()) { + uint32_t src_file_id = first_line->getSourceFileId(); + auto src_file = m_session_up->getSourceFileById(src_file_id); + if (src_file) { + FileSpec spec(src_file->getFileName()); + decl.SetFile(spec); + decl.SetColumn(first_line->getColumnNumber()); + decl.SetLine(first_line->getLineNumber()); + } + } + } + } + + Variable::RangeList ranges; + SymbolContextScope *context_scope = sc.comp_unit; + if (scope == eValueTypeVariableLocal || scope == eValueTypeVariableArgument) { + if (sc.function) { + Block &function_block = sc.function->GetBlock(true); + Block *block = + function_block.FindBlockByID(pdb_data.getLexicalParentId()); + if (!block) + block = &function_block; + + context_scope = block; + + for (size_t i = 0, num_ranges = block->GetNumRanges(); i < num_ranges; + ++i) { + AddressRange range; + if (!block->GetRangeAtIndex(i, range)) + continue; + + ranges.Append(range.GetBaseAddress().GetFileAddress(), + range.GetByteSize()); + } + } + } + + SymbolFileTypeSP type_sp = + std::make_shared<SymbolFileType>(*this, pdb_data.getTypeId()); + + auto var_name = pdb_data.getName(); + auto mangled = GetMangledForPDBData(pdb_data); + auto mangled_cstr = mangled.empty() ? nullptr : mangled.c_str(); + + bool is_constant; + DWARFExpression location = ConvertPDBLocationToDWARFExpression( + GetObjectFile()->GetModule(), pdb_data, ranges, is_constant); + + var_sp = std::make_shared<Variable>( + var_uid, var_name.c_str(), mangled_cstr, type_sp, scope, context_scope, + ranges, &decl, location, is_external, is_artificial, is_static_member); + var_sp->SetLocationIsConstantValueData(is_constant); + + m_variables.insert(std::make_pair(var_uid, var_sp)); + return var_sp; +} + +size_t +SymbolFilePDB::ParseVariables(const lldb_private::SymbolContext &sc, + const llvm::pdb::PDBSymbol &pdb_symbol, + lldb_private::VariableList *variable_list) { + size_t num_added = 0; + + if (auto pdb_data = llvm::dyn_cast<PDBSymbolData>(&pdb_symbol)) { + VariableListSP local_variable_list_sp; + + auto result = m_variables.find(pdb_data->getSymIndexId()); + if (result != m_variables.end()) { + if (variable_list) + variable_list->AddVariableIfUnique(result->second); + } else { + // Prepare right VariableList for this variable. + if (auto lexical_parent = pdb_data->getLexicalParent()) { + switch (lexical_parent->getSymTag()) { + case PDB_SymType::Exe: + assert(sc.comp_unit); + LLVM_FALLTHROUGH; + case PDB_SymType::Compiland: { + if (sc.comp_unit) { + local_variable_list_sp = sc.comp_unit->GetVariableList(false); + if (!local_variable_list_sp) { + local_variable_list_sp = std::make_shared<VariableList>(); + sc.comp_unit->SetVariableList(local_variable_list_sp); + } + } + } break; + case PDB_SymType::Block: + case PDB_SymType::Function: { + if (sc.function) { + Block *block = sc.function->GetBlock(true).FindBlockByID( + lexical_parent->getSymIndexId()); + if (block) { + local_variable_list_sp = block->GetBlockVariableList(false); + if (!local_variable_list_sp) { + local_variable_list_sp = std::make_shared<VariableList>(); + block->SetVariableList(local_variable_list_sp); + } + } + } + } break; + default: + break; + } + } + + if (local_variable_list_sp) { + if (auto var_sp = ParseVariableForPDBData(sc, *pdb_data)) { + local_variable_list_sp->AddVariableIfUnique(var_sp); + if (variable_list) + variable_list->AddVariableIfUnique(var_sp); + ++num_added; + PDBASTParser *ast = GetPDBAstParser(); + if (ast) + ast->GetDeclForSymbol(*pdb_data); + } + } + } + } + + if (auto results = pdb_symbol.findAllChildren()) { + while (auto result = results->getNext()) + num_added += ParseVariables(sc, *result, variable_list); + } + + return num_added; +} + +void SymbolFilePDB::FindGlobalVariables( + lldb_private::ConstString name, + const lldb_private::CompilerDeclContext *parent_decl_ctx, + uint32_t max_matches, lldb_private::VariableList &variables) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) + return; + if (name.IsEmpty()) + return; + + auto results = m_global_scope_up->findAllChildren<PDBSymbolData>(); + if (!results) + return; + + uint32_t matches = 0; + size_t old_size = variables.GetSize(); + while (auto result = results->getNext()) { + auto pdb_data = llvm::dyn_cast<PDBSymbolData>(result.get()); + if (max_matches > 0 && matches >= max_matches) + break; + + SymbolContext sc; + sc.module_sp = m_objfile_sp->GetModule(); + lldbassert(sc.module_sp.get()); + + if (!name.GetStringRef().equals( + MSVCUndecoratedNameParser::DropScope(pdb_data->getName()))) + continue; + + sc.comp_unit = ParseCompileUnitForUID(GetCompilandId(*pdb_data)).get(); + // FIXME: We are not able to determine the compile unit. + if (sc.comp_unit == nullptr) + continue; + + if (parent_decl_ctx && GetDeclContextContainingUID( + result->getSymIndexId()) != *parent_decl_ctx) + continue; + + ParseVariables(sc, *pdb_data, &variables); + matches = variables.GetSize() - old_size; + } +} + +void SymbolFilePDB::FindGlobalVariables( + const lldb_private::RegularExpression ®ex, uint32_t max_matches, + lldb_private::VariableList &variables) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (!regex.IsValid()) + return; + auto results = m_global_scope_up->findAllChildren<PDBSymbolData>(); + if (!results) + return; + + uint32_t matches = 0; + size_t old_size = variables.GetSize(); + while (auto pdb_data = results->getNext()) { + if (max_matches > 0 && matches >= max_matches) + break; + + auto var_name = pdb_data->getName(); + if (var_name.empty()) + continue; + if (!regex.Execute(var_name)) + continue; + SymbolContext sc; + sc.module_sp = m_objfile_sp->GetModule(); + lldbassert(sc.module_sp.get()); + + sc.comp_unit = ParseCompileUnitForUID(GetCompilandId(*pdb_data)).get(); + // FIXME: We are not able to determine the compile unit. + if (sc.comp_unit == nullptr) + continue; + + ParseVariables(sc, *pdb_data, &variables); + matches = variables.GetSize() - old_size; + } +} + +bool SymbolFilePDB::ResolveFunction(const llvm::pdb::PDBSymbolFunc &pdb_func, + bool include_inlines, + lldb_private::SymbolContextList &sc_list) { + lldb_private::SymbolContext sc; + sc.comp_unit = ParseCompileUnitForUID(pdb_func.getCompilandId()).get(); + if (!sc.comp_unit) + return false; + sc.module_sp = sc.comp_unit->GetModule(); + sc.function = ParseCompileUnitFunctionForPDBFunc(pdb_func, *sc.comp_unit); + if (!sc.function) + return false; + + sc_list.Append(sc); + return true; +} + +bool SymbolFilePDB::ResolveFunction(uint32_t uid, bool include_inlines, + lldb_private::SymbolContextList &sc_list) { + auto pdb_func_up = m_session_up->getConcreteSymbolById<PDBSymbolFunc>(uid); + if (!pdb_func_up && !(include_inlines && pdb_func_up->hasInlineAttribute())) + return false; + return ResolveFunction(*pdb_func_up, include_inlines, sc_list); +} + +void SymbolFilePDB::CacheFunctionNames() { + if (!m_func_full_names.IsEmpty()) + return; + + std::map<uint64_t, uint32_t> addr_ids; + + if (auto results_up = m_global_scope_up->findAllChildren<PDBSymbolFunc>()) { + while (auto pdb_func_up = results_up->getNext()) { + if (pdb_func_up->isCompilerGenerated()) + continue; + + auto name = pdb_func_up->getName(); + auto demangled_name = pdb_func_up->getUndecoratedName(); + if (name.empty() && demangled_name.empty()) + continue; + + auto uid = pdb_func_up->getSymIndexId(); + if (!demangled_name.empty() && pdb_func_up->getVirtualAddress()) + addr_ids.insert(std::make_pair(pdb_func_up->getVirtualAddress(), uid)); + + if (auto parent = pdb_func_up->getClassParent()) { + + // PDB have symbols for class/struct methods or static methods in Enum + // Class. We won't bother to check if the parent is UDT or Enum here. + m_func_method_names.Append(ConstString(name), uid); + + // To search a method name, like NS::Class:MemberFunc, LLDB searches + // its base name, i.e. MemberFunc by default. Since PDBSymbolFunc does + // not have inforamtion of this, we extract base names and cache them + // by our own effort. + llvm::StringRef basename = MSVCUndecoratedNameParser::DropScope(name); + if (!basename.empty()) + m_func_base_names.Append(ConstString(basename), uid); + else { + m_func_base_names.Append(ConstString(name), uid); + } + + if (!demangled_name.empty()) + m_func_full_names.Append(ConstString(demangled_name), uid); + + } else { + // Handle not-method symbols. + + // The function name might contain namespace, or its lexical scope. + llvm::StringRef basename = MSVCUndecoratedNameParser::DropScope(name); + if (!basename.empty()) + m_func_base_names.Append(ConstString(basename), uid); + else + m_func_base_names.Append(ConstString(name), uid); + + if (name == "main") { + m_func_full_names.Append(ConstString(name), uid); + + if (!demangled_name.empty() && name != demangled_name) { + m_func_full_names.Append(ConstString(demangled_name), uid); + m_func_base_names.Append(ConstString(demangled_name), uid); + } + } else if (!demangled_name.empty()) { + m_func_full_names.Append(ConstString(demangled_name), uid); + } else { + m_func_full_names.Append(ConstString(name), uid); + } + } + } + } + + if (auto results_up = + m_global_scope_up->findAllChildren<PDBSymbolPublicSymbol>()) { + while (auto pub_sym_up = results_up->getNext()) { + if (!pub_sym_up->isFunction()) + continue; + auto name = pub_sym_up->getName(); + if (name.empty()) + continue; + + if (CPlusPlusLanguage::IsCPPMangledName(name.c_str())) { + auto vm_addr = pub_sym_up->getVirtualAddress(); + + // PDB public symbol has mangled name for its associated function. + if (vm_addr && addr_ids.find(vm_addr) != addr_ids.end()) { + // Cache mangled name. + m_func_full_names.Append(ConstString(name), addr_ids[vm_addr]); + } + } + } + } + // Sort them before value searching is working properly + m_func_full_names.Sort(); + m_func_full_names.SizeToFit(); + m_func_method_names.Sort(); + m_func_method_names.SizeToFit(); + m_func_base_names.Sort(); + m_func_base_names.SizeToFit(); +} + +void SymbolFilePDB::FindFunctions( + lldb_private::ConstString name, + const lldb_private::CompilerDeclContext *parent_decl_ctx, + FunctionNameType name_type_mask, bool include_inlines, + lldb_private::SymbolContextList &sc_list) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + lldbassert((name_type_mask & eFunctionNameTypeAuto) == 0); + + if (name_type_mask == eFunctionNameTypeNone) + return; + if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) + return; + if (name.IsEmpty()) + return; + + if (name_type_mask & eFunctionNameTypeFull || + name_type_mask & eFunctionNameTypeBase || + name_type_mask & eFunctionNameTypeMethod) { + CacheFunctionNames(); + + std::set<uint32_t> resolved_ids; + auto ResolveFn = [this, &name, parent_decl_ctx, include_inlines, &sc_list, + &resolved_ids](UniqueCStringMap<uint32_t> &Names) { + std::vector<uint32_t> ids; + if (!Names.GetValues(name, ids)) + return; + + for (uint32_t id : ids) { + if (resolved_ids.find(id) != resolved_ids.end()) + continue; + + if (parent_decl_ctx && + GetDeclContextContainingUID(id) != *parent_decl_ctx) + continue; + + if (ResolveFunction(id, include_inlines, sc_list)) + resolved_ids.insert(id); + } + }; + if (name_type_mask & eFunctionNameTypeFull) { + ResolveFn(m_func_full_names); + ResolveFn(m_func_base_names); + ResolveFn(m_func_method_names); + } + if (name_type_mask & eFunctionNameTypeBase) + ResolveFn(m_func_base_names); + if (name_type_mask & eFunctionNameTypeMethod) + ResolveFn(m_func_method_names); + } +} + +void SymbolFilePDB::FindFunctions(const lldb_private::RegularExpression ®ex, + bool include_inlines, + lldb_private::SymbolContextList &sc_list) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (!regex.IsValid()) + return; + + CacheFunctionNames(); + + std::set<uint32_t> resolved_ids; + auto ResolveFn = [®ex, include_inlines, &sc_list, &resolved_ids, + this](UniqueCStringMap<uint32_t> &Names) { + std::vector<uint32_t> ids; + if (Names.GetValues(regex, ids)) { + for (auto id : ids) { + if (resolved_ids.find(id) == resolved_ids.end()) + if (ResolveFunction(id, include_inlines, sc_list)) + resolved_ids.insert(id); + } + } + }; + ResolveFn(m_func_full_names); + ResolveFn(m_func_base_names); +} + +void SymbolFilePDB::GetMangledNamesForFunction( + const std::string &scope_qualified_name, + std::vector<lldb_private::ConstString> &mangled_names) {} + +void SymbolFilePDB::AddSymbols(lldb_private::Symtab &symtab) { + std::set<lldb::addr_t> sym_addresses; + for (size_t i = 0; i < symtab.GetNumSymbols(); i++) + sym_addresses.insert(symtab.SymbolAtIndex(i)->GetFileAddress()); + + auto results = m_global_scope_up->findAllChildren<PDBSymbolPublicSymbol>(); + if (!results) + return; + + auto section_list = m_objfile_sp->GetSectionList(); + if (!section_list) + return; + + while (auto pub_symbol = results->getNext()) { + auto section_id = pub_symbol->getAddressSection(); + + auto section = section_list->FindSectionByID(section_id); + if (!section) + continue; + + auto offset = pub_symbol->getAddressOffset(); + + auto file_addr = section->GetFileAddress() + offset; + if (sym_addresses.find(file_addr) != sym_addresses.end()) + continue; + sym_addresses.insert(file_addr); + + auto size = pub_symbol->getLength(); + symtab.AddSymbol( + Symbol(pub_symbol->getSymIndexId(), // symID + pub_symbol->getName().c_str(), // name + pub_symbol->isCode() ? eSymbolTypeCode : eSymbolTypeData, // type + true, // external + false, // is_debug + false, // is_trampoline + false, // is_artificial + section, // section_sp + offset, // value + size, // size + size != 0, // size_is_valid + false, // contains_linker_annotations + 0 // flags + )); + } + + symtab.CalculateSymbolSizes(); + symtab.Finalize(); +} + +void SymbolFilePDB::FindTypes( + lldb_private::ConstString name, + const lldb_private::CompilerDeclContext *parent_decl_ctx, + uint32_t max_matches, + llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files, + lldb_private::TypeMap &types) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + if (!name) + return; + if (!DeclContextMatchesThisSymbolFile(parent_decl_ctx)) + return; + + searched_symbol_files.clear(); + searched_symbol_files.insert(this); + + // There is an assumption 'name' is not a regex + FindTypesByName(name.GetStringRef(), parent_decl_ctx, max_matches, types); +} + +void SymbolFilePDB::DumpClangAST(Stream &s) { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to dump ClangAST"); + return; + } + + auto *clang_type_system = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_type_system) + return; + clang_type_system->Dump(s); +} + +void SymbolFilePDB::FindTypesByRegex( + const lldb_private::RegularExpression ®ex, uint32_t max_matches, + lldb_private::TypeMap &types) { + // When searching by regex, we need to go out of our way to limit the search + // space as much as possible since this searches EVERYTHING in the PDB, + // manually doing regex comparisons. PDB library isn't optimized for regex + // searches or searches across multiple symbol types at the same time, so the + // best we can do is to search enums, then typedefs, then classes one by one, + // and do a regex comparison against each of them. + PDB_SymType tags_to_search[] = {PDB_SymType::Enum, PDB_SymType::Typedef, + PDB_SymType::UDT}; + std::unique_ptr<IPDBEnumSymbols> results; + + uint32_t matches = 0; + + for (auto tag : tags_to_search) { + results = m_global_scope_up->findAllChildren(tag); + if (!results) + continue; + + while (auto result = results->getNext()) { + if (max_matches > 0 && matches >= max_matches) + break; + + std::string type_name; + if (auto enum_type = llvm::dyn_cast<PDBSymbolTypeEnum>(result.get())) + type_name = enum_type->getName(); + else if (auto typedef_type = + llvm::dyn_cast<PDBSymbolTypeTypedef>(result.get())) + type_name = typedef_type->getName(); + else if (auto class_type = llvm::dyn_cast<PDBSymbolTypeUDT>(result.get())) + type_name = class_type->getName(); + else { + // We're looking only for types that have names. Skip symbols, as well + // as unnamed types such as arrays, pointers, etc. + continue; + } + + if (!regex.Execute(type_name)) + continue; + + // This should cause the type to get cached and stored in the `m_types` + // lookup. + if (!ResolveTypeUID(result->getSymIndexId())) + continue; + + auto iter = m_types.find(result->getSymIndexId()); + if (iter == m_types.end()) + continue; + types.Insert(iter->second); + ++matches; + } + } +} + +void SymbolFilePDB::FindTypesByName( + llvm::StringRef name, + const lldb_private::CompilerDeclContext *parent_decl_ctx, + uint32_t max_matches, lldb_private::TypeMap &types) { + std::unique_ptr<IPDBEnumSymbols> results; + if (name.empty()) + return; + results = m_global_scope_up->findAllChildren(PDB_SymType::None); + if (!results) + return; + + uint32_t matches = 0; + + while (auto result = results->getNext()) { + if (max_matches > 0 && matches >= max_matches) + break; + + if (MSVCUndecoratedNameParser::DropScope( + result->getRawSymbol().getName()) != name) + continue; + + switch (result->getSymTag()) { + case PDB_SymType::Enum: + case PDB_SymType::UDT: + case PDB_SymType::Typedef: + break; + default: + // We're looking only for types that have names. Skip symbols, as well + // as unnamed types such as arrays, pointers, etc. + continue; + } + + // This should cause the type to get cached and stored in the `m_types` + // lookup. + if (!ResolveTypeUID(result->getSymIndexId())) + continue; + + if (parent_decl_ctx && GetDeclContextContainingUID( + result->getSymIndexId()) != *parent_decl_ctx) + continue; + + auto iter = m_types.find(result->getSymIndexId()); + if (iter == m_types.end()) + continue; + types.Insert(iter->second); + ++matches; + } +} + +void SymbolFilePDB::FindTypes(llvm::ArrayRef<CompilerContext> pattern, + LanguageSet languages, + lldb_private::TypeMap &types) {} + +void SymbolFilePDB::GetTypesForPDBSymbol(const llvm::pdb::PDBSymbol &pdb_symbol, + uint32_t type_mask, + TypeCollection &type_collection) { + bool can_parse = false; + switch (pdb_symbol.getSymTag()) { + case PDB_SymType::ArrayType: + can_parse = ((type_mask & eTypeClassArray) != 0); + break; + case PDB_SymType::BuiltinType: + can_parse = ((type_mask & eTypeClassBuiltin) != 0); + break; + case PDB_SymType::Enum: + can_parse = ((type_mask & eTypeClassEnumeration) != 0); + break; + case PDB_SymType::Function: + case PDB_SymType::FunctionSig: + can_parse = ((type_mask & eTypeClassFunction) != 0); + break; + case PDB_SymType::PointerType: + can_parse = ((type_mask & (eTypeClassPointer | eTypeClassBlockPointer | + eTypeClassMemberPointer)) != 0); + break; + case PDB_SymType::Typedef: + can_parse = ((type_mask & eTypeClassTypedef) != 0); + break; + case PDB_SymType::UDT: { + auto *udt = llvm::dyn_cast<PDBSymbolTypeUDT>(&pdb_symbol); + assert(udt); + can_parse = (udt->getUdtKind() != PDB_UdtType::Interface && + ((type_mask & (eTypeClassClass | eTypeClassStruct | + eTypeClassUnion)) != 0)); + } break; + default: + break; + } + + if (can_parse) { + if (auto *type = ResolveTypeUID(pdb_symbol.getSymIndexId())) { + auto result = + std::find(type_collection.begin(), type_collection.end(), type); + if (result == type_collection.end()) + type_collection.push_back(type); + } + } + + auto results_up = pdb_symbol.findAllChildren(); + while (auto symbol_up = results_up->getNext()) + GetTypesForPDBSymbol(*symbol_up, type_mask, type_collection); +} + +void SymbolFilePDB::GetTypes(lldb_private::SymbolContextScope *sc_scope, + TypeClass type_mask, + lldb_private::TypeList &type_list) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + TypeCollection type_collection; + CompileUnit *cu = + sc_scope ? sc_scope->CalculateSymbolContextCompileUnit() : nullptr; + if (cu) { + auto compiland_up = GetPDBCompilandByUID(cu->GetID()); + if (!compiland_up) + return; + GetTypesForPDBSymbol(*compiland_up, type_mask, type_collection); + } else { + for (uint32_t cu_idx = 0; cu_idx < GetNumCompileUnits(); ++cu_idx) { + auto cu_sp = ParseCompileUnitAtIndex(cu_idx); + if (cu_sp) { + if (auto compiland_up = GetPDBCompilandByUID(cu_sp->GetID())) + GetTypesForPDBSymbol(*compiland_up, type_mask, type_collection); + } + } + } + + for (auto type : type_collection) { + type->GetForwardCompilerType(); + type_list.Insert(type->shared_from_this()); + } +} + +llvm::Expected<lldb_private::TypeSystem &> +SymbolFilePDB::GetTypeSystemForLanguage(lldb::LanguageType language) { + auto type_system_or_err = + m_objfile_sp->GetModule()->GetTypeSystemForLanguage(language); + if (type_system_or_err) { + type_system_or_err->SetSymbolFile(this); + } + return type_system_or_err; +} + +PDBASTParser *SymbolFilePDB::GetPDBAstParser() { + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to get PDB AST parser"); + return nullptr; + } + + auto *clang_type_system = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_type_system) + return nullptr; + + return clang_type_system->GetPDBParser(); +} + + +lldb_private::CompilerDeclContext SymbolFilePDB::FindNamespace( + lldb_private::ConstString name, + const lldb_private::CompilerDeclContext *parent_decl_ctx) { + std::lock_guard<std::recursive_mutex> guard(GetModuleMutex()); + auto type_system_or_err = + GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), "Unable to find namespace {}", + name.AsCString()); + return CompilerDeclContext(); + } + + auto *clang_type_system = + llvm::dyn_cast_or_null<ClangASTContext>(&type_system_or_err.get()); + if (!clang_type_system) + return CompilerDeclContext(); + + PDBASTParser *pdb = clang_type_system->GetPDBParser(); + if (!pdb) + return CompilerDeclContext(); + + clang::DeclContext *decl_context = nullptr; + if (parent_decl_ctx) + decl_context = static_cast<clang::DeclContext *>( + parent_decl_ctx->GetOpaqueDeclContext()); + + auto namespace_decl = + pdb->FindNamespaceDecl(decl_context, name.GetStringRef()); + if (!namespace_decl) + return CompilerDeclContext(); + + return CompilerDeclContext(clang_type_system, + static_cast<clang::DeclContext *>(namespace_decl)); +} + +lldb_private::ConstString SymbolFilePDB::GetPluginName() { + static ConstString g_name("pdb"); + return g_name; +} + +uint32_t SymbolFilePDB::GetPluginVersion() { return 1; } + +IPDBSession &SymbolFilePDB::GetPDBSession() { return *m_session_up; } + +const IPDBSession &SymbolFilePDB::GetPDBSession() const { + return *m_session_up; +} + +lldb::CompUnitSP SymbolFilePDB::ParseCompileUnitForUID(uint32_t id, + uint32_t index) { + auto found_cu = m_comp_units.find(id); + if (found_cu != m_comp_units.end()) + return found_cu->second; + + auto compiland_up = GetPDBCompilandByUID(id); + if (!compiland_up) + return CompUnitSP(); + + lldb::LanguageType lang; + auto details = compiland_up->findOneChild<PDBSymbolCompilandDetails>(); + if (!details) + lang = lldb::eLanguageTypeC_plus_plus; + else + lang = TranslateLanguage(details->getLanguage()); + + if (lang == lldb::LanguageType::eLanguageTypeUnknown) + return CompUnitSP(); + + std::string path = compiland_up->getSourceFileFullPath(); + if (path.empty()) + return CompUnitSP(); + + // Don't support optimized code for now, DebugInfoPDB does not return this + // information. + LazyBool optimized = eLazyBoolNo; + auto cu_sp = std::make_shared<CompileUnit>(m_objfile_sp->GetModule(), nullptr, + path.c_str(), id, lang, optimized); + + if (!cu_sp) + return CompUnitSP(); + + m_comp_units.insert(std::make_pair(id, cu_sp)); + if (index == UINT32_MAX) + GetCompileUnitIndex(*compiland_up, index); + lldbassert(index != UINT32_MAX); + SetCompileUnitAtIndex(index, cu_sp); + return cu_sp; +} + +bool SymbolFilePDB::ParseCompileUnitLineTable(CompileUnit &comp_unit, + uint32_t match_line) { + auto compiland_up = GetPDBCompilandByUID(comp_unit.GetID()); + if (!compiland_up) + return false; + + // LineEntry needs the *index* of the file into the list of support files + // returned by ParseCompileUnitSupportFiles. But the underlying SDK gives us + // a globally unique idenfitifier in the namespace of the PDB. So, we have + // to do a mapping so that we can hand out indices. + llvm::DenseMap<uint32_t, uint32_t> index_map; + BuildSupportFileIdToSupportFileIndexMap(*compiland_up, index_map); + auto line_table = std::make_unique<LineTable>(&comp_unit); + + // Find contributions to `compiland` from all source and header files. + std::string path = comp_unit.GetPath(); + auto files = m_session_up->getSourceFilesForCompiland(*compiland_up); + if (!files) + return false; + + // For each source and header file, create a LineSequence for contributions + // to the compiland from that file, and add the sequence. + while (auto file = files->getNext()) { + std::unique_ptr<LineSequence> sequence( + line_table->CreateLineSequenceContainer()); + auto lines = m_session_up->findLineNumbers(*compiland_up, *file); + if (!lines) + continue; + int entry_count = lines->getChildCount(); + + uint64_t prev_addr; + uint32_t prev_length; + uint32_t prev_line; + uint32_t prev_source_idx; + + for (int i = 0; i < entry_count; ++i) { + auto line = lines->getChildAtIndex(i); + + uint64_t lno = line->getLineNumber(); + uint64_t addr = line->getVirtualAddress(); + uint32_t length = line->getLength(); + uint32_t source_id = line->getSourceFileId(); + uint32_t col = line->getColumnNumber(); + uint32_t source_idx = index_map[source_id]; + + // There was a gap between the current entry and the previous entry if + // the addresses don't perfectly line up. + bool is_gap = (i > 0) && (prev_addr + prev_length < addr); + + // Before inserting the current entry, insert a terminal entry at the end + // of the previous entry's address range if the current entry resulted in + // a gap from the previous entry. + if (is_gap && ShouldAddLine(match_line, prev_line, prev_length)) { + line_table->AppendLineEntryToSequence( + sequence.get(), prev_addr + prev_length, prev_line, 0, + prev_source_idx, false, false, false, false, true); + + line_table->InsertSequence(sequence.release()); + sequence.reset(line_table->CreateLineSequenceContainer()); + } + + if (ShouldAddLine(match_line, lno, length)) { + bool is_statement = line->isStatement(); + bool is_prologue = false; + bool is_epilogue = false; + auto func = + m_session_up->findSymbolByAddress(addr, PDB_SymType::Function); + if (func) { + auto prologue = func->findOneChild<PDBSymbolFuncDebugStart>(); + if (prologue) + is_prologue = (addr == prologue->getVirtualAddress()); + + auto epilogue = func->findOneChild<PDBSymbolFuncDebugEnd>(); + if (epilogue) + is_epilogue = (addr == epilogue->getVirtualAddress()); + } + + line_table->AppendLineEntryToSequence(sequence.get(), addr, lno, col, + source_idx, is_statement, false, + is_prologue, is_epilogue, false); + } + + prev_addr = addr; + prev_length = length; + prev_line = lno; + prev_source_idx = source_idx; + } + + if (entry_count > 0 && ShouldAddLine(match_line, prev_line, prev_length)) { + // The end is always a terminal entry, so insert it regardless. + line_table->AppendLineEntryToSequence( + sequence.get(), prev_addr + prev_length, prev_line, 0, + prev_source_idx, false, false, false, false, true); + } + + line_table->InsertSequence(sequence.release()); + } + + if (line_table->GetSize()) { + comp_unit.SetLineTable(line_table.release()); + return true; + } + return false; +} + +void SymbolFilePDB::BuildSupportFileIdToSupportFileIndexMap( + const PDBSymbolCompiland &compiland, + llvm::DenseMap<uint32_t, uint32_t> &index_map) const { + // This is a hack, but we need to convert the source id into an index into + // the support files array. We don't want to do path comparisons to avoid + // basename / full path issues that may or may not even be a problem, so we + // use the globally unique source file identifiers. Ideally we could use the + // global identifiers everywhere, but LineEntry currently assumes indices. + auto source_files = m_session_up->getSourceFilesForCompiland(compiland); + if (!source_files) + return; + + // LLDB uses the DWARF-like file numeration (one based) + int index = 1; + + while (auto file = source_files->getNext()) { + uint32_t source_id = file->getUniqueId(); + index_map[source_id] = index++; + } +} + +lldb::CompUnitSP SymbolFilePDB::GetCompileUnitContainsAddress( + const lldb_private::Address &so_addr) { + lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); + if (file_vm_addr == LLDB_INVALID_ADDRESS || file_vm_addr == 0) + return nullptr; + + // If it is a PDB function's vm addr, this is the first sure bet. + if (auto lines = + m_session_up->findLineNumbersByAddress(file_vm_addr, /*Length=*/1)) { + if (auto first_line = lines->getNext()) + return ParseCompileUnitForUID(first_line->getCompilandId()); + } + + // Otherwise we resort to section contributions. + if (auto sec_contribs = m_session_up->getSectionContribs()) { + while (auto section = sec_contribs->getNext()) { + auto va = section->getVirtualAddress(); + if (file_vm_addr >= va && file_vm_addr < va + section->getLength()) + return ParseCompileUnitForUID(section->getCompilandId()); + } + } + return nullptr; +} + +Mangled +SymbolFilePDB::GetMangledForPDBFunc(const llvm::pdb::PDBSymbolFunc &pdb_func) { + Mangled mangled; + auto func_name = pdb_func.getName(); + auto func_undecorated_name = pdb_func.getUndecoratedName(); + std::string func_decorated_name; + + // Seek from public symbols for non-static function's decorated name if any. + // For static functions, they don't have undecorated names and aren't exposed + // in Public Symbols either. + if (!func_undecorated_name.empty()) { + auto result_up = m_global_scope_up->findChildren( + PDB_SymType::PublicSymbol, func_undecorated_name, + PDB_NameSearchFlags::NS_UndecoratedName); + if (result_up) { + while (auto symbol_up = result_up->getNext()) { + // For a public symbol, it is unique. + lldbassert(result_up->getChildCount() == 1); + if (auto *pdb_public_sym = + llvm::dyn_cast_or_null<PDBSymbolPublicSymbol>( + symbol_up.get())) { + if (pdb_public_sym->isFunction()) { + func_decorated_name = pdb_public_sym->getName(); + break; + } + } + } + } + } + if (!func_decorated_name.empty()) { + mangled.SetMangledName(ConstString(func_decorated_name)); + + // For MSVC, format of C funciton's decorated name depends on calling + // conventon. Unfortunately none of the format is recognized by current + // LLDB. For example, `_purecall` is a __cdecl C function. From PDB, + // `__purecall` is retrieved as both its decorated and undecorated name + // (using PDBSymbolFunc::getUndecoratedName method). However `__purecall` + // string is not treated as mangled in LLDB (neither `?` nor `_Z` prefix). + // Mangled::GetDemangledName method will fail internally and caches an + // empty string as its undecorated name. So we will face a contradition + // here for the same symbol: + // non-empty undecorated name from PDB + // empty undecorated name from LLDB + if (!func_undecorated_name.empty() && + mangled.GetDemangledName(mangled.GuessLanguage()).IsEmpty()) + mangled.SetDemangledName(ConstString(func_undecorated_name)); + + // LLDB uses several flags to control how a C++ decorated name is + // undecorated for MSVC. See `safeUndecorateName` in Class Mangled. So the + // yielded name could be different from what we retrieve from + // PDB source unless we also apply same flags in getting undecorated + // name through PDBSymbolFunc::getUndecoratedNameEx method. + if (!func_undecorated_name.empty() && + mangled.GetDemangledName(mangled.GuessLanguage()) != + ConstString(func_undecorated_name)) + mangled.SetDemangledName(ConstString(func_undecorated_name)); + } else if (!func_undecorated_name.empty()) { + mangled.SetDemangledName(ConstString(func_undecorated_name)); + } else if (!func_name.empty()) + mangled.SetValue(ConstString(func_name), false); + + return mangled; +} + +bool SymbolFilePDB::DeclContextMatchesThisSymbolFile( + const lldb_private::CompilerDeclContext *decl_ctx) { + if (decl_ctx == nullptr || !decl_ctx->IsValid()) + return true; + + TypeSystem *decl_ctx_type_system = decl_ctx->GetTypeSystem(); + if (!decl_ctx_type_system) + return false; + auto type_system_or_err = GetTypeSystemForLanguage( + decl_ctx_type_system->GetMinimumLanguage(nullptr)); + if (auto err = type_system_or_err.takeError()) { + LLDB_LOG_ERROR( + lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_SYMBOLS), + std::move(err), + "Unable to determine if DeclContext matches this symbol file"); + return false; + } + + if (decl_ctx_type_system == &type_system_or_err.get()) + return true; // The type systems match, return true + + return false; +} + +uint32_t SymbolFilePDB::GetCompilandId(const llvm::pdb::PDBSymbolData &data) { + static const auto pred_upper = [](uint32_t lhs, SecContribInfo rhs) { + return lhs < rhs.Offset; + }; + + // Cache section contributions + if (m_sec_contribs.empty()) { + if (auto SecContribs = m_session_up->getSectionContribs()) { + while (auto SectionContrib = SecContribs->getNext()) { + auto comp_id = SectionContrib->getCompilandId(); + if (!comp_id) + continue; + + auto sec = SectionContrib->getAddressSection(); + auto &sec_cs = m_sec_contribs[sec]; + + auto offset = SectionContrib->getAddressOffset(); + auto it = + std::upper_bound(sec_cs.begin(), sec_cs.end(), offset, pred_upper); + + auto size = SectionContrib->getLength(); + sec_cs.insert(it, {offset, size, comp_id}); + } + } + } + + // Check by line number + if (auto Lines = data.getLineNumbers()) { + if (auto FirstLine = Lines->getNext()) + return FirstLine->getCompilandId(); + } + + // Retrieve section + offset + uint32_t DataSection = data.getAddressSection(); + uint32_t DataOffset = data.getAddressOffset(); + if (DataSection == 0) { + if (auto RVA = data.getRelativeVirtualAddress()) + m_session_up->addressForRVA(RVA, DataSection, DataOffset); + } + + if (DataSection) { + // Search by section contributions + auto &sec_cs = m_sec_contribs[DataSection]; + auto it = + std::upper_bound(sec_cs.begin(), sec_cs.end(), DataOffset, pred_upper); + if (it != sec_cs.begin()) { + --it; + if (DataOffset < it->Offset + it->Size) + return it->CompilandId; + } + } else { + // Search in lexical tree + auto LexParentId = data.getLexicalParentId(); + while (auto LexParent = m_session_up->getSymbolById(LexParentId)) { + if (LexParent->getSymTag() == PDB_SymType::Exe) + break; + if (LexParent->getSymTag() == PDB_SymType::Compiland) + return LexParentId; + LexParentId = LexParent->getRawSymbol().getLexicalParentId(); + } + } + + return 0; +} |