f09cca4c6f
lldb's and llvm's implementations of DWARFAbbreviationDeclarationSet are now close enough (almost the same, actually) to replace lldb's with llvm's wholesale. llvm's is also tested against the same kinds of scenarios that lldb's is tested against so we can remove lldb's tests here. (see: llvm/unittests/DebugInfo/DWARF/DWARFDebugAbbrevTest.cpp). Differential Revision: https://reviews.llvm.org/D152476
580 lines
21 KiB
C++
580 lines
21 KiB
C++
//===-- SymbolFileDWARF.h --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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#include <list>
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#include <map>
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#include <mutex>
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#include <optional>
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#include <unordered_map>
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#include <vector>
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/Support/Threading.h"
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#include "lldb/Core/UniqueCStringMap.h"
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#include "lldb/Core/dwarf.h"
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#include "lldb/Expression/DWARFExpressionList.h"
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#include "lldb/Symbol/DebugMacros.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Target/Statistics.h"
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#include "lldb/Utility/ConstString.h"
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#include "lldb/Utility/Flags.h"
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#include "lldb/Utility/RangeMap.h"
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#include "lldb/lldb-private.h"
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#include "DWARFContext.h"
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#include "DWARFDataExtractor.h"
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#include "DWARFDefines.h"
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#include "DWARFIndex.h"
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#include "UniqueDWARFASTType.h"
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// Forward Declarations for this DWARF plugin
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class DebugMapModule;
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class DWARFCompileUnit;
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class DWARFDebugAbbrev;
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class DWARFDebugAranges;
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class DWARFDebugInfo;
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class DWARFDebugInfoEntry;
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class DWARFDebugLine;
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class DWARFDebugRanges;
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class DWARFDeclContext;
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class DWARFFormValue;
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class DWARFTypeUnit;
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class SymbolFileDWARFDebugMap;
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class SymbolFileDWARFDwo;
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class SymbolFileDWARFDwp;
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class UserID;
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#define DIE_IS_BEING_PARSED ((lldb_private::Type *)1)
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class SymbolFileDWARF : public lldb_private::SymbolFileCommon {
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/// LLVM RTTI support.
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static char ID;
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public:
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/// LLVM RTTI support.
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/// \{
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bool isA(const void *ClassID) const override {
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return ClassID == &ID || SymbolFileCommon::isA(ClassID);
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}
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static bool classof(const SymbolFile *obj) { return obj->isA(&ID); }
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/// \}
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friend class SymbolFileDWARFDebugMap;
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friend class SymbolFileDWARFDwo;
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friend class DebugMapModule;
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friend class DWARFCompileUnit;
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friend class DWARFDIE;
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friend class DWARFASTParserClang;
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// Static Functions
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static void Initialize();
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static void Terminate();
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static void DebuggerInitialize(lldb_private::Debugger &debugger);
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static llvm::StringRef GetPluginNameStatic() { return "dwarf"; }
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static llvm::StringRef GetPluginDescriptionStatic();
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static lldb_private::SymbolFile *
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CreateInstance(lldb::ObjectFileSP objfile_sp);
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// Constructors and Destructors
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SymbolFileDWARF(lldb::ObjectFileSP objfile_sp,
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lldb_private::SectionList *dwo_section_list);
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~SymbolFileDWARF() override;
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uint32_t CalculateAbilities() override;
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void InitializeObject() override;
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// Compile Unit function calls
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lldb::LanguageType
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ParseLanguage(lldb_private::CompileUnit &comp_unit) override;
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lldb_private::XcodeSDK
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ParseXcodeSDK(lldb_private::CompileUnit &comp_unit) override;
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size_t ParseFunctions(lldb_private::CompileUnit &comp_unit) override;
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bool ParseLineTable(lldb_private::CompileUnit &comp_unit) override;
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bool ParseDebugMacros(lldb_private::CompileUnit &comp_unit) override;
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bool ForEachExternalModule(
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lldb_private::CompileUnit &, llvm::DenseSet<lldb_private::SymbolFile *> &,
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llvm::function_ref<bool(lldb_private::Module &)>) override;
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bool ParseSupportFiles(lldb_private::CompileUnit &comp_unit,
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lldb_private::FileSpecList &support_files) override;
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bool ParseIsOptimized(lldb_private::CompileUnit &comp_unit) override;
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size_t ParseTypes(lldb_private::CompileUnit &comp_unit) override;
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bool ParseImportedModules(
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const lldb_private::SymbolContext &sc,
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std::vector<lldb_private::SourceModule> &imported_modules) override;
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size_t ParseBlocksRecursive(lldb_private::Function &func) override;
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size_t
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ParseVariablesForContext(const lldb_private::SymbolContext &sc) override;
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lldb_private::Type *ResolveTypeUID(lldb::user_id_t type_uid) override;
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std::optional<ArrayInfo> GetDynamicArrayInfoForUID(
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lldb::user_id_t type_uid,
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const lldb_private::ExecutionContext *exe_ctx) override;
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bool CompleteType(lldb_private::CompilerType &compiler_type) override;
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lldb_private::Type *ResolveType(const DWARFDIE &die,
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bool assert_not_being_parsed = true,
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bool resolve_function_context = false);
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lldb_private::CompilerDecl GetDeclForUID(lldb::user_id_t uid) override;
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lldb_private::CompilerDeclContext
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GetDeclContextForUID(lldb::user_id_t uid) override;
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lldb_private::CompilerDeclContext
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GetDeclContextContainingUID(lldb::user_id_t uid) override;
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void
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ParseDeclsForContext(lldb_private::CompilerDeclContext decl_ctx) override;
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uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr,
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lldb::SymbolContextItem resolve_scope,
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lldb_private::SymbolContext &sc) override;
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lldb_private::Status
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CalculateFrameVariableError(lldb_private::StackFrame &frame) override;
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uint32_t ResolveSymbolContext(
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const lldb_private::SourceLocationSpec &src_location_spec,
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lldb::SymbolContextItem resolve_scope,
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lldb_private::SymbolContextList &sc_list) override;
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void
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FindGlobalVariables(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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uint32_t max_matches,
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lldb_private::VariableList &variables) override;
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void FindGlobalVariables(const lldb_private::RegularExpression ®ex,
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uint32_t max_matches,
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lldb_private::VariableList &variables) override;
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void FindFunctions(const lldb_private::Module::LookupInfo &lookup_info,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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bool include_inlines,
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lldb_private::SymbolContextList &sc_list) override;
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void FindFunctions(const lldb_private::RegularExpression ®ex,
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bool include_inlines,
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lldb_private::SymbolContextList &sc_list) override;
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void GetMangledNamesForFunction(
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const std::string &scope_qualified_name,
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std::vector<lldb_private::ConstString> &mangled_names) override;
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void
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FindTypes(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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uint32_t max_matches,
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llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
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lldb_private::TypeMap &types) override;
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void FindTypes(llvm::ArrayRef<lldb_private::CompilerContext> pattern,
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lldb_private::LanguageSet languages,
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llvm::DenseSet<SymbolFile *> &searched_symbol_files,
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lldb_private::TypeMap &types) override;
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void GetTypes(lldb_private::SymbolContextScope *sc_scope,
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lldb::TypeClass type_mask,
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lldb_private::TypeList &type_list) override;
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llvm::Expected<lldb::TypeSystemSP>
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GetTypeSystemForLanguage(lldb::LanguageType language) override;
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lldb_private::CompilerDeclContext
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FindNamespace(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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bool only_root_namespaces) override;
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void PreloadSymbols() override;
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std::recursive_mutex &GetModuleMutex() const override;
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// PluginInterface protocol
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llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
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DWARFDebugAbbrev *DebugAbbrev();
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DWARFDebugInfo &DebugInfo();
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DWARFDebugRanges *GetDebugRanges();
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static bool SupportedVersion(uint16_t version);
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DWARFDIE
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GetDeclContextDIEContainingDIE(const DWARFDIE &die);
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bool
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HasForwardDeclForClangType(const lldb_private::CompilerType &compiler_type);
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lldb_private::CompileUnit *
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GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu);
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virtual void GetObjCMethods(lldb_private::ConstString class_name,
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llvm::function_ref<bool(DWARFDIE die)> callback);
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bool Supports_DW_AT_APPLE_objc_complete_type(DWARFUnit *cu);
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lldb_private::DebugMacrosSP ParseDebugMacros(lldb::offset_t *offset);
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static DWARFDIE GetParentSymbolContextDIE(const DWARFDIE &die);
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lldb::ModuleSP GetExternalModule(lldb_private::ConstString name);
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typedef std::map<lldb_private::ConstString, lldb::ModuleSP>
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ExternalTypeModuleMap;
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/// Return the list of Clang modules imported by this SymbolFile.
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const ExternalTypeModuleMap &getExternalTypeModules() const {
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return m_external_type_modules;
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}
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virtual DWARFDIE GetDIE(const DIERef &die_ref);
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DWARFDIE GetDIE(lldb::user_id_t uid);
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std::shared_ptr<SymbolFileDWARFDwo>
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GetDwoSymbolFileForCompileUnit(DWARFUnit &dwarf_cu,
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const DWARFDebugInfoEntry &cu_die);
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/// If this is a DWARF object with a single CU, return its DW_AT_dwo_id.
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std::optional<uint64_t> GetDWOId();
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static bool
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DIEInDeclContext(const lldb_private::CompilerDeclContext &parent_decl_ctx,
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const DWARFDIE &die, bool only_root_namespaces = false);
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std::vector<std::unique_ptr<lldb_private::CallEdge>>
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ParseCallEdgesInFunction(lldb_private::UserID func_id) override;
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void Dump(lldb_private::Stream &s) override;
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void DumpClangAST(lldb_private::Stream &s) override;
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lldb_private::DWARFContext &GetDWARFContext() { return m_context; }
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const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile();
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lldb_private::FileSpec GetFile(DWARFUnit &unit, size_t file_idx);
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static llvm::Expected<lldb::TypeSystemSP> GetTypeSystem(DWARFUnit &unit);
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static DWARFASTParser *GetDWARFParser(DWARFUnit &unit);
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// CompilerDecl related functions
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static lldb_private::CompilerDecl GetDecl(const DWARFDIE &die);
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static lldb_private::CompilerDeclContext GetDeclContext(const DWARFDIE &die);
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static lldb_private::CompilerDeclContext
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GetContainingDeclContext(const DWARFDIE &die);
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static DWARFDeclContext GetDWARFDeclContext(const DWARFDIE &die);
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static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val);
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static lldb::LanguageType GetLanguage(DWARFUnit &unit);
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/// Same as GetLanguage() but reports all C++ versions as C++ (no version).
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static lldb::LanguageType GetLanguageFamily(DWARFUnit &unit);
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lldb_private::StatsDuration::Duration GetDebugInfoParseTime() override {
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return m_parse_time;
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}
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lldb_private::StatsDuration::Duration GetDebugInfoIndexTime() override;
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lldb_private::StatsDuration &GetDebugInfoParseTimeRef() {
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return m_parse_time;
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}
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virtual lldb::offset_t
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GetVendorDWARFOpcodeSize(const lldb_private::DataExtractor &data,
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const lldb::offset_t data_offset,
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const uint8_t op) const {
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return LLDB_INVALID_OFFSET;
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}
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virtual bool
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ParseVendorDWARFOpcode(uint8_t op, const lldb_private::DataExtractor &opcodes,
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lldb::offset_t &offset,
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std::vector<lldb_private::Value> &stack) const {
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return false;
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}
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lldb_private::ConstString ConstructFunctionDemangledName(const DWARFDIE &die);
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std::optional<uint64_t> GetFileIndex() const { return m_file_index; }
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void SetFileIndex(std::optional<uint64_t> file_index) {
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m_file_index = file_index;
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}
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protected:
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb_private::Type *>
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DIEToTypePtr;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::VariableSP>
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DIEToVariableSP;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *,
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lldb::opaque_compiler_type_t>
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DIEToClangType;
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typedef llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> ClangTypeToDIE;
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SymbolFileDWARF(const SymbolFileDWARF &) = delete;
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const SymbolFileDWARF &operator=(const SymbolFileDWARF &) = delete;
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virtual void LoadSectionData(lldb::SectionType sect_type,
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lldb_private::DWARFDataExtractor &data);
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bool DeclContextMatchesThisSymbolFile(
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const lldb_private::CompilerDeclContext &decl_ctx);
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uint32_t CalculateNumCompileUnits() override;
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lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override;
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lldb_private::TypeList &GetTypeList() override;
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lldb::CompUnitSP ParseCompileUnit(DWARFCompileUnit &dwarf_cu);
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virtual DWARFCompileUnit *
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GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit);
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DWARFUnit *GetNextUnparsedDWARFCompileUnit(DWARFUnit *prev_cu);
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bool GetFunction(const DWARFDIE &die, lldb_private::SymbolContext &sc);
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lldb_private::Function *ParseFunction(lldb_private::CompileUnit &comp_unit,
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const DWARFDIE &die);
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size_t ParseBlocksRecursive(lldb_private::CompileUnit &comp_unit,
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lldb_private::Block *parent_block,
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const DWARFDIE &die,
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lldb::addr_t subprogram_low_pc, uint32_t depth);
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size_t ParseTypes(const lldb_private::SymbolContext &sc, const DWARFDIE &die,
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bool parse_siblings, bool parse_children);
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lldb::TypeSP ParseType(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die, bool *type_is_new);
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bool ParseSupportFiles(DWARFUnit &dwarf_cu, const lldb::ModuleSP &module,
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lldb_private::FileSpecList &support_files);
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lldb_private::Type *ResolveTypeUID(const DWARFDIE &die,
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bool assert_not_being_parsed);
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lldb_private::Type *ResolveTypeUID(const DIERef &die_ref);
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lldb::VariableSP ParseVariableDIE(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die,
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const lldb::addr_t func_low_pc);
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lldb::VariableSP ParseVariableDIECached(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die);
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void
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ParseAndAppendGlobalVariable(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die,
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lldb_private::VariableList &cc_variable_list);
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size_t ParseVariablesInFunctionContext(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die,
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const lldb::addr_t func_low_pc);
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size_t ParseVariablesInFunctionContextRecursive(
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const lldb_private::SymbolContext &sc, const DWARFDIE &die,
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lldb::addr_t func_low_pc, DIEArray &accumulator);
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size_t PopulateBlockVariableList(lldb_private::VariableList &variable_list,
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const lldb_private::SymbolContext &sc,
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llvm::ArrayRef<DIERef> variable_dies,
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lldb::addr_t func_low_pc);
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DIEArray MergeBlockAbstractParameters(const DWARFDIE &block_die,
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DIEArray &&variable_dies);
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bool ClassOrStructIsVirtual(const DWARFDIE &die);
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// Given a die_offset, figure out the symbol context representing that die.
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bool ResolveFunction(const DWARFDIE &die, bool include_inlines,
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lldb_private::SymbolContextList &sc_list);
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/// Resolve functions and (possibly) blocks for the given file address and a
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/// compile unit. The compile unit comes from the sc argument and it must be
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/// set. The results of the lookup (if any) are written back to the symbol
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/// context.
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void ResolveFunctionAndBlock(lldb::addr_t file_vm_addr, bool lookup_block,
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lldb_private::SymbolContext &sc);
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virtual lldb::TypeSP
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FindDefinitionTypeForDWARFDeclContext(const DWARFDIE &die);
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virtual lldb::TypeSP
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FindCompleteObjCDefinitionTypeForDIE(const DWARFDIE &die,
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lldb_private::ConstString type_name,
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bool must_be_implementation);
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lldb_private::Symbol *
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GetObjCClassSymbol(lldb_private::ConstString objc_class_name);
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lldb::TypeSP GetTypeForDIE(const DWARFDIE &die,
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bool resolve_function_context = false);
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void SetDebugMapModule(const lldb::ModuleSP &module_sp) {
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m_debug_map_module_wp = module_sp;
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}
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SymbolFileDWARFDebugMap *GetDebugMapSymfile();
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DWARFDIE
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FindBlockContainingSpecification(const DIERef &func_die_ref,
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dw_offset_t spec_block_die_offset);
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DWARFDIE
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FindBlockContainingSpecification(const DWARFDIE &die,
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dw_offset_t spec_block_die_offset);
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virtual UniqueDWARFASTTypeMap &GetUniqueDWARFASTTypeMap();
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bool DIEDeclContextsMatch(const DWARFDIE &die1, const DWARFDIE &die2);
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bool ClassContainsSelector(const DWARFDIE &class_die,
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lldb_private::ConstString selector);
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/// Parse call site entries (DW_TAG_call_site), including any nested call site
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/// parameters (DW_TAG_call_site_parameter).
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std::vector<std::unique_ptr<lldb_private::CallEdge>>
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CollectCallEdges(lldb::ModuleSP module, DWARFDIE function_die);
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/// If this symbol file is linked to by a debug map (see
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/// SymbolFileDWARFDebugMap), and \p file_addr is a file address relative to
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/// an object file, adjust \p file_addr so that it is relative to the main
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/// binary. Returns the adjusted address, or \p file_addr if no adjustment is
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/// needed, on success and LLDB_INVALID_ADDRESS otherwise.
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lldb::addr_t FixupAddress(lldb::addr_t file_addr);
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bool FixupAddress(lldb_private::Address &addr);
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typedef llvm::SetVector<lldb_private::Type *> TypeSet;
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void GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset,
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dw_offset_t max_die_offset, uint32_t type_mask,
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TypeSet &type_set);
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typedef lldb_private::RangeDataVector<lldb::addr_t, lldb::addr_t,
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lldb_private::Variable *>
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GlobalVariableMap;
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GlobalVariableMap &GetGlobalAranges();
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void UpdateExternalModuleListIfNeeded();
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virtual DIEToTypePtr &GetDIEToType() { return m_die_to_type; }
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virtual DIEToVariableSP &GetDIEToVariable() { return m_die_to_variable_sp; }
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virtual DIEToClangType &GetForwardDeclDieToClangType() {
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return m_forward_decl_die_to_clang_type;
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}
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virtual ClangTypeToDIE &GetForwardDeclClangTypeToDie() {
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return m_forward_decl_clang_type_to_die;
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}
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void BuildCuTranslationTable();
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std::optional<uint32_t> GetDWARFUnitIndex(uint32_t cu_idx);
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void FindDwpSymbolFile();
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const lldb_private::FileSpecList &GetTypeUnitSupportFiles(DWARFTypeUnit &tu);
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void InitializeFirstCodeAddressRecursive(
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const lldb_private::SectionList §ion_list);
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void InitializeFirstCodeAddress();
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void GetCompileOptions(
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std::unordered_map<lldb::CompUnitSP, lldb_private::Args> &args) override;
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lldb::ModuleWP m_debug_map_module_wp;
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SymbolFileDWARFDebugMap *m_debug_map_symfile;
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llvm::once_flag m_dwp_symfile_once_flag;
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std::shared_ptr<SymbolFileDWARFDwo> m_dwp_symfile;
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lldb_private::DWARFContext m_context;
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llvm::once_flag m_info_once_flag;
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std::unique_ptr<DWARFDebugInfo> m_info;
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std::unique_ptr<DWARFDebugAbbrev> m_abbr;
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std::unique_ptr<GlobalVariableMap> m_global_aranges_up;
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typedef std::unordered_map<lldb::offset_t, lldb_private::DebugMacrosSP>
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DebugMacrosMap;
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DebugMacrosMap m_debug_macros_map;
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ExternalTypeModuleMap m_external_type_modules;
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std::unique_ptr<lldb_private::DWARFIndex> m_index;
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bool m_fetched_external_modules : 1;
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lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type;
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|
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typedef std::set<DIERef> DIERefSet;
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typedef llvm::StringMap<DIERefSet> NameToOffsetMap;
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NameToOffsetMap m_function_scope_qualified_name_map;
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std::unique_ptr<DWARFDebugRanges> m_ranges;
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|
UniqueDWARFASTTypeMap m_unique_ast_type_map;
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|
DIEToTypePtr m_die_to_type;
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|
DIEToVariableSP m_die_to_variable_sp;
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|
DIEToClangType m_forward_decl_die_to_clang_type;
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|
ClangTypeToDIE m_forward_decl_clang_type_to_die;
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|
llvm::DenseMap<dw_offset_t, lldb_private::FileSpecList>
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|
m_type_unit_support_files;
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|
std::vector<uint32_t> m_lldb_cu_to_dwarf_unit;
|
|
/// DWARF does not provide a good way for traditional (concatenating) linkers
|
|
/// to invalidate debug info describing dead-stripped code. These linkers will
|
|
/// keep the debug info but resolve any addresses referring to such code as
|
|
/// zero (BFD) or a small positive integer (zero + relocation addend -- GOLD).
|
|
/// Try to filter out this debug info by comparing it to the lowest code
|
|
/// address in the module.
|
|
lldb::addr_t m_first_code_address = LLDB_INVALID_ADDRESS;
|
|
lldb_private::StatsDuration m_parse_time;
|
|
std::atomic_flag m_dwo_warning_issued = ATOMIC_FLAG_INIT;
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|
/// If this DWARF file a .DWO file or a DWARF .o file on mac when
|
|
/// no dSYM file is being used, this file index will be set to a
|
|
/// valid value that can be used in DIERef objects which will contain
|
|
/// an index that identifies the .DWO or .o file.
|
|
std::optional<uint64_t> m_file_index;
|
|
};
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#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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