46bcbaafb5
Summary: The solution to bug 24074,rL249673 needed to parse the function information from the Dwarf in order to set the SymbolContext. For that, GetFunction was called for the parent in GetTypeForDIE, which parses the ChildParameters and in the flow, GetTypeForDIE was called for one of the sibling die and so an infinite loop was triggered by calling GetFunction repeatedly for the same function. The changes in this revision modify the GetTypeForDIE to only resolve the function context in the Type Lookup flow and so prevent the infinite loop. A testcase has also been added to check for regression in the future and a test vector had been added to the testcase of 24074. Reviewers: jingham, tberghammer, clayborg Differential Revision: http://reviews.llvm.org/D14202 llvm-svn: 251917
572 lines
20 KiB
C++
572 lines
20 KiB
C++
//===-- SymbolFileDWARF.h --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SymbolFileDWARF_SymbolFileDWARF_h_
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#define SymbolFileDWARF_SymbolFileDWARF_h_
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// C Includes
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// C++ Includes
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#include <list>
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#include <map>
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#include <mutex>
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#include <set>
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#include <vector>
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// Other libraries and framework includes
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#include "llvm/ADT/DenseMap.h"
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#include "lldb/lldb-private.h"
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/dwarf.h"
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#include "lldb/Core/Flags.h"
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#include "lldb/Core/RangeMap.h"
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#include "lldb/Core/UniqueCStringMap.h"
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#include "lldb/Expression/DWARFExpression.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Symbol/SymbolContext.h"
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// Project includes
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#include "DWARFDefines.h"
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#include "DWARFDataExtractor.h"
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#include "HashedNameToDIE.h"
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#include "NameToDIE.h"
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#include "UniqueDWARFASTType.h"
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//----------------------------------------------------------------------
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// Forward Declarations for this DWARF plugin
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//----------------------------------------------------------------------
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class DebugMapModule;
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class DWARFAbbreviationDeclaration;
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class DWARFAbbreviationDeclarationSet;
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class DWARFileUnit;
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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 DWARFDebugPubnames;
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class DWARFDebugRanges;
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class DWARFDeclContext;
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class DWARFDIECollection;
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class DWARFFormValue;
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class SymbolFileDWARFDebugMap;
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#define DIE_IS_BEING_PARSED ((lldb_private::Type*)1)
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class SymbolFileDWARF : public lldb_private::SymbolFile, public lldb_private::UserID
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{
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public:
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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 DWARFASTParserClang;
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friend class DWARFASTParserGo;
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void
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Initialize();
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static void
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Terminate();
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static void
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DebuggerInitialize(lldb_private::Debugger &debugger);
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static lldb_private::ConstString
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GetPluginNameStatic();
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static const char *
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GetPluginDescriptionStatic();
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static lldb_private::SymbolFile*
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CreateInstance (lldb_private::ObjectFile* obj_file);
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//------------------------------------------------------------------
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// Constructors and Destructors
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//------------------------------------------------------------------
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SymbolFileDWARF(lldb_private::ObjectFile* ofile);
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~SymbolFileDWARF() override;
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uint32_t
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CalculateAbilities () override;
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void
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InitializeObject() override;
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//------------------------------------------------------------------
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// Compile Unit function calls
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//------------------------------------------------------------------
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uint32_t
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GetNumCompileUnits() override;
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lldb::CompUnitSP
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ParseCompileUnitAtIndex(uint32_t index) override;
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lldb::LanguageType
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ParseCompileUnitLanguage (const lldb_private::SymbolContext& sc) override;
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size_t
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ParseCompileUnitFunctions (const lldb_private::SymbolContext& sc) override;
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bool
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ParseCompileUnitLineTable (const lldb_private::SymbolContext& sc) override;
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bool
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ParseCompileUnitSupportFiles (const lldb_private::SymbolContext& sc,
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lldb_private::FileSpecList& support_files) override;
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bool
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ParseImportedModules (const lldb_private::SymbolContext &sc,
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std::vector<lldb_private::ConstString> &imported_modules) override;
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size_t
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ParseFunctionBlocks (const lldb_private::SymbolContext& sc) override;
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size_t
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ParseTypes (const lldb_private::SymbolContext& sc) 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 *
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ResolveTypeUID(lldb::user_id_t type_uid) override;
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bool
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CompleteType (lldb_private::CompilerType& compiler_type) override;
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lldb_private::Type *
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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
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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
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ResolveSymbolContext (const lldb_private::Address& so_addr,
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uint32_t resolve_scope,
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lldb_private::SymbolContext& sc) override;
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uint32_t
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ResolveSymbolContext (const lldb_private::FileSpec& file_spec,
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uint32_t line,
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bool check_inlines,
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uint32_t resolve_scope,
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lldb_private::SymbolContextList& sc_list) override;
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uint32_t
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FindGlobalVariables (const lldb_private::ConstString &name,
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const lldb_private::CompilerDeclContext *parent_decl_ctx,
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bool append,
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uint32_t max_matches,
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lldb_private::VariableList& variables) override;
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uint32_t
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FindGlobalVariables (const lldb_private::RegularExpression& regex,
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bool append,
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uint32_t max_matches,
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lldb_private::VariableList& variables) override;
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uint32_t
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FindFunctions (const lldb_private::ConstString &name,
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const lldb_private::CompilerDeclContext *parent_decl_ctx,
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uint32_t name_type_mask,
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bool include_inlines,
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bool append,
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lldb_private::SymbolContextList& sc_list) override;
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uint32_t
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FindFunctions (const lldb_private::RegularExpression& regex,
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bool include_inlines,
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bool append,
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lldb_private::SymbolContextList& sc_list) override;
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uint32_t
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FindTypes (const lldb_private::SymbolContext& sc,
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const lldb_private::ConstString &name,
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const lldb_private::CompilerDeclContext *parent_decl_ctx,
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bool append,
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uint32_t max_matches,
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lldb_private::TypeMap& types) override;
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lldb_private::TypeList *
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GetTypeList () override;
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size_t
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GetTypes (lldb_private::SymbolContextScope *sc_scope,
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uint32_t type_mask,
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lldb_private::TypeList &type_list) override;
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lldb_private::TypeSystem *
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GetTypeSystemForLanguage (lldb::LanguageType language) override;
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lldb_private::CompilerDeclContext
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FindNamespace (const lldb_private::SymbolContext& sc,
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const lldb_private::ConstString &name,
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const lldb_private::CompilerDeclContext *parent_decl_ctx) override;
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString
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GetPluginName() override;
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uint32_t
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GetPluginVersion() override;
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const lldb_private::DWARFDataExtractor& get_debug_abbrev_data ();
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const lldb_private::DWARFDataExtractor& get_debug_addr_data ();
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const lldb_private::DWARFDataExtractor& get_debug_aranges_data ();
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const lldb_private::DWARFDataExtractor& get_debug_frame_data ();
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const lldb_private::DWARFDataExtractor& get_debug_info_data ();
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const lldb_private::DWARFDataExtractor& get_debug_line_data ();
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const lldb_private::DWARFDataExtractor& get_debug_loc_data ();
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const lldb_private::DWARFDataExtractor& get_debug_ranges_data ();
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const lldb_private::DWARFDataExtractor& get_debug_str_data ();
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const lldb_private::DWARFDataExtractor& get_debug_str_offsets_data ();
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const lldb_private::DWARFDataExtractor& get_apple_names_data ();
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const lldb_private::DWARFDataExtractor& get_apple_types_data ();
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const lldb_private::DWARFDataExtractor& get_apple_namespaces_data ();
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const lldb_private::DWARFDataExtractor& get_apple_objc_data ();
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DWARFDebugAbbrev*
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DebugAbbrev();
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const DWARFDebugAbbrev*
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DebugAbbrev() const;
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DWARFDebugInfo*
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DebugInfo();
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const DWARFDebugInfo*
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DebugInfo() const;
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DWARFDebugRanges*
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DebugRanges();
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const DWARFDebugRanges*
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DebugRanges() const;
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static bool
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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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uint32_t cu_idx = UINT32_MAX);
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lldb::user_id_t
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MakeUserID (dw_offset_t die_offset) const
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{
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return GetID() | die_offset;
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}
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size_t
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GetObjCMethodDIEOffsets (lldb_private::ConstString class_name,
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DIEArray &method_die_offsets);
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bool
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Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu);
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static DWARFDIE
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GetParentSymbolContextDIE(const DWARFDIE &die);
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virtual lldb::CompUnitSP
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ParseCompileUnit (DWARFCompileUnit* dwarf_cu, uint32_t cu_idx);
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virtual lldb_private::DWARFExpression::LocationListFormat
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GetLocationListFormat() const;
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protected:
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb_private::Type *> DIEToTypePtr;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::VariableSP> DIEToVariableSP;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::opaque_compiler_type_t> DIEToClangType;
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typedef llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> ClangTypeToDIE;
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struct DWARFDataSegment
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{
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std::once_flag m_flag;
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lldb_private::DWARFDataExtractor m_data;
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};
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DISALLOW_COPY_AND_ASSIGN (SymbolFileDWARF);
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const lldb_private::DWARFDataExtractor&
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GetCachedSectionData (lldb::SectionType sect_type, DWARFDataSegment& data_segment);
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virtual void
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LoadSectionData (lldb::SectionType sect_type, lldb_private::DWARFDataExtractor& data);
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bool
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DeclContextMatchesThisSymbolFile (const lldb_private::CompilerDeclContext *decl_ctx);
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bool
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DIEInDeclContext (const lldb_private::CompilerDeclContext *parent_decl_ctx,
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const DWARFDIE &die);
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virtual DWARFCompileUnit*
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GetDWARFCompileUnit (lldb_private::CompileUnit *comp_unit);
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DWARFCompileUnit*
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GetNextUnparsedDWARFCompileUnit (DWARFCompileUnit* prev_cu);
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bool
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GetFunction (const DWARFDIE &die,
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lldb_private::SymbolContext& sc);
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lldb_private::Function *
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ParseCompileUnitFunction (const lldb_private::SymbolContext& sc,
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const DWARFDIE &die);
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size_t
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ParseFunctionBlocks (const lldb_private::SymbolContext& sc,
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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,
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uint32_t depth);
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size_t
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ParseTypes (const lldb_private::SymbolContext& sc,
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const DWARFDIE &die,
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bool parse_siblings,
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bool parse_children);
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lldb::TypeSP
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ParseType (const lldb_private::SymbolContext& sc,
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const DWARFDIE &die,
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bool *type_is_new);
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lldb_private::Type *
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ResolveTypeUID (const DWARFDIE &die,
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bool assert_not_being_parsed);
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lldb::VariableSP
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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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size_t
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ParseVariables (const lldb_private::SymbolContext& sc,
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const DWARFDIE &orig_die,
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const lldb::addr_t func_low_pc,
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bool parse_siblings,
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bool parse_children,
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lldb_private::VariableList* cc_variable_list = NULL);
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bool
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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
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ResolveFunction (const DIERef& die_ref,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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bool
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ResolveFunction (const DWARFDIE &die,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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void
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FindFunctions(const lldb_private::ConstString &name,
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const NameToDIE &name_to_die,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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void
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FindFunctions (const lldb_private::RegularExpression ®ex,
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const NameToDIE &name_to_die,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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void
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FindFunctions (const lldb_private::RegularExpression ®ex,
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const DWARFMappedHash::MemoryTable &memory_table,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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virtual lldb::TypeSP
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FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &die_decl_ctx);
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lldb::TypeSP
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FindCompleteObjCDefinitionTypeForDIE (const DWARFDIE &die,
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const lldb_private::ConstString &type_name,
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bool must_be_implementation);
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lldb::TypeSP
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FindCompleteObjCDefinitionType (const lldb_private::ConstString &type_name,
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bool header_definition_ok);
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lldb_private::Symbol *
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GetObjCClassSymbol (const lldb_private::ConstString &objc_class_name);
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void
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ParseFunctions (const DIEArray &die_offsets,
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bool include_inlines,
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lldb_private::SymbolContextList& sc_list);
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lldb::TypeSP
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GetTypeForDIE (const DWARFDIE &die, bool resolve_function_context = false);
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void
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Index();
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void
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DumpIndexes();
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void
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SetDebugMapModule (const lldb::ModuleSP &module_sp)
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{
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m_debug_map_module_wp = module_sp;
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}
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SymbolFileDWARFDebugMap *
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GetDebugMapSymfile ();
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DWARFDIE
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FindBlockContainingSpecification (const DIERef& func_die_ref, dw_offset_t spec_block_die_offset);
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DWARFDIE
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FindBlockContainingSpecification (const DWARFDIE &die, dw_offset_t spec_block_die_offset);
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virtual UniqueDWARFASTTypeMap &
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GetUniqueDWARFASTTypeMap ();
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bool
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UserIDMatches (lldb::user_id_t uid) const
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{
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const lldb::user_id_t high_uid = uid & 0xffffffff00000000ull;
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if (high_uid != 0 && GetID() != 0)
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return high_uid == GetID();
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return true;
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}
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bool
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DIEDeclContextsMatch (const DWARFDIE &die1,
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const DWARFDIE &die2);
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bool
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ClassContainsSelector (const DWARFDIE &class_die,
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const lldb_private::ConstString &selector);
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bool
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FixupAddress (lldb_private::Address &addr);
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typedef std::set<lldb_private::Type *> TypeSet;
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typedef struct {
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lldb_private::ConstString m_name;
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lldb::ModuleSP m_module_sp;
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} ClangModuleInfo;
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typedef std::map<uint64_t, ClangModuleInfo> ExternalTypeModuleMap;
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void
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GetTypes (const DWARFDIE &die,
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dw_offset_t min_die_offset,
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dw_offset_t max_die_offset,
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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, lldb_private::Variable *> GlobalVariableMap;
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GlobalVariableMap &
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GetGlobalAranges();
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void
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UpdateExternalModuleListIfNeeded();
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virtual DIEToTypePtr&
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GetDIEToType() { return m_die_to_type; }
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virtual DIEToVariableSP&
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GetDIEToVariable() { return m_die_to_variable_sp; }
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virtual DIEToClangType&
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GetForwardDeclDieToClangType() { return m_forward_decl_die_to_clang_type; }
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virtual ClangTypeToDIE&
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GetForwardDeclClangTypeToDie() { return m_forward_decl_clang_type_to_die; }
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lldb::ModuleWP m_debug_map_module_wp;
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SymbolFileDWARFDebugMap * m_debug_map_symfile;
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lldb_private::DWARFDataExtractor m_dwarf_data;
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DWARFDataSegment m_data_debug_abbrev;
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DWARFDataSegment m_data_debug_addr;
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DWARFDataSegment m_data_debug_aranges;
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DWARFDataSegment m_data_debug_frame;
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DWARFDataSegment m_data_debug_info;
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DWARFDataSegment m_data_debug_line;
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DWARFDataSegment m_data_debug_loc;
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DWARFDataSegment m_data_debug_ranges;
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DWARFDataSegment m_data_debug_str;
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DWARFDataSegment m_data_debug_str_offsets;
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DWARFDataSegment m_data_apple_names;
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DWARFDataSegment m_data_apple_types;
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DWARFDataSegment m_data_apple_namespaces;
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DWARFDataSegment m_data_apple_objc;
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// The unique pointer items below are generated on demand if and when someone accesses
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// them through a non const version of this class.
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std::unique_ptr<DWARFDebugAbbrev> m_abbr;
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std::unique_ptr<DWARFDebugInfo> m_info;
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std::unique_ptr<DWARFDebugLine> m_line;
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std::unique_ptr<DWARFMappedHash::MemoryTable> m_apple_names_ap;
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std::unique_ptr<DWARFMappedHash::MemoryTable> m_apple_types_ap;
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std::unique_ptr<DWARFMappedHash::MemoryTable> m_apple_namespaces_ap;
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std::unique_ptr<DWARFMappedHash::MemoryTable> m_apple_objc_ap;
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std::unique_ptr<GlobalVariableMap> m_global_aranges_ap;
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ExternalTypeModuleMap m_external_type_modules;
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NameToDIE m_function_basename_index; // All concrete functions
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NameToDIE m_function_fullname_index; // All concrete functions
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NameToDIE m_function_method_index; // All inlined functions
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NameToDIE m_function_selector_index; // All method names for functions of classes
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NameToDIE m_objc_class_selectors_index; // Given a class name, find all selectors for the class
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NameToDIE m_global_index; // Global and static variables
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NameToDIE m_type_index; // All type DIE offsets
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NameToDIE m_namespace_index; // All type DIE offsets
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bool m_indexed:1,
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m_using_apple_tables:1,
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m_fetched_external_modules:1;
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lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type;
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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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};
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#endif // SymbolFileDWARF_SymbolFileDWARF_h_
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