| //===-- SymbolFileDWARF.cpp ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SymbolFileDWARF.h" |
| |
| // Other libraries and framework includes |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclGroup.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/Basic/Builtins.h" |
| #include "clang/Basic/IdentifierTable.h" |
| #include "clang/Basic/LangOptions.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Basic/Specifiers.h" |
| #include "clang/Sema/DeclSpec.h" |
| |
| #include "llvm/Support/Casting.h" |
| |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/RegularExpression.h" |
| #include "lldb/Core/Scalar.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/Timer.h" |
| #include "lldb/Core/Value.h" |
| |
| #include "lldb/Host/Host.h" |
| |
| #include "lldb/Symbol/Block.h" |
| #include "lldb/Symbol/ClangExternalASTSourceCallbacks.h" |
| #include "lldb/Symbol/CompileUnit.h" |
| #include "lldb/Symbol/LineTable.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Symbol/SymbolVendor.h" |
| #include "lldb/Symbol/VariableList.h" |
| |
| #include "lldb/Target/ObjCLanguageRuntime.h" |
| #include "lldb/Target/CPPLanguageRuntime.h" |
| |
| #include "DWARFCompileUnit.h" |
| #include "DWARFDebugAbbrev.h" |
| #include "DWARFDebugAranges.h" |
| #include "DWARFDebugInfo.h" |
| #include "DWARFDebugInfoEntry.h" |
| #include "DWARFDebugLine.h" |
| #include "DWARFDebugPubnames.h" |
| #include "DWARFDebugRanges.h" |
| #include "DWARFDIECollection.h" |
| #include "DWARFFormValue.h" |
| #include "DWARFLocationList.h" |
| #include "LogChannelDWARF.h" |
| #include "SymbolFileDWARFDebugMap.h" |
| |
| #include <map> |
| |
| //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN |
| |
| #ifdef ENABLE_DEBUG_PRINTF |
| #include <stdio.h> |
| #define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__) |
| #else |
| #define DEBUG_PRINTF(fmt, ...) |
| #endif |
| |
| #define DIE_IS_BEING_PARSED ((lldb_private::Type*)1) |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static inline bool |
| child_requires_parent_class_union_or_struct_to_be_completed (dw_tag_t tag) |
| { |
| switch (tag) |
| { |
| default: |
| break; |
| case DW_TAG_subprogram: |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_class_type: |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| return true; |
| } |
| return false; |
| } |
| |
| static AccessType |
| DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility) |
| { |
| switch (dwarf_accessibility) |
| { |
| case DW_ACCESS_public: return eAccessPublic; |
| case DW_ACCESS_private: return eAccessPrivate; |
| case DW_ACCESS_protected: return eAccessProtected; |
| default: break; |
| } |
| return eAccessNone; |
| } |
| |
| void |
| SymbolFileDWARF::Initialize() |
| { |
| LogChannelDWARF::Initialize(); |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance); |
| } |
| |
| void |
| SymbolFileDWARF::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| LogChannelDWARF::Initialize(); |
| } |
| |
| |
| const char * |
| SymbolFileDWARF::GetPluginNameStatic() |
| { |
| return "dwarf"; |
| } |
| |
| const char * |
| SymbolFileDWARF::GetPluginDescriptionStatic() |
| { |
| return "DWARF and DWARF3 debug symbol file reader."; |
| } |
| |
| |
| SymbolFile* |
| SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) |
| { |
| return new SymbolFileDWARF(obj_file); |
| } |
| |
| TypeList * |
| SymbolFileDWARF::GetTypeList () |
| { |
| if (m_debug_map_symfile) |
| return m_debug_map_symfile->GetTypeList(); |
| return m_obj_file->GetModule()->GetTypeList(); |
| |
| } |
| |
| //---------------------------------------------------------------------- |
| // Gets the first parent that is a lexical block, function or inlined |
| // subroutine, or compile unit. |
| //---------------------------------------------------------------------- |
| static const DWARFDebugInfoEntry * |
| GetParentSymbolContextDIE(const DWARFDebugInfoEntry *child_die) |
| { |
| const DWARFDebugInfoEntry *die; |
| for (die = child_die->GetParent(); die != NULL; die = die->GetParent()) |
| { |
| dw_tag_t tag = die->Tag(); |
| |
| switch (tag) |
| { |
| case DW_TAG_compile_unit: |
| case DW_TAG_subprogram: |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_lexical_block: |
| return die; |
| } |
| } |
| return NULL; |
| } |
| |
| |
| SymbolFileDWARF::SymbolFileDWARF(ObjectFile* objfile) : |
| SymbolFile (objfile), |
| UserID (0), // Used by SymbolFileDWARFDebugMap to when this class parses .o files to contain the .o file index/ID |
| m_debug_map_symfile (NULL), |
| m_clang_tu_decl (NULL), |
| m_flags(), |
| m_data_debug_abbrev (), |
| m_data_debug_aranges (), |
| m_data_debug_frame (), |
| m_data_debug_info (), |
| m_data_debug_line (), |
| m_data_debug_loc (), |
| m_data_debug_ranges (), |
| m_data_debug_str (), |
| m_data_apple_names (), |
| m_data_apple_types (), |
| m_data_apple_namespaces (), |
| m_abbr(), |
| m_info(), |
| m_line(), |
| m_apple_names_ap (), |
| m_apple_types_ap (), |
| m_apple_namespaces_ap (), |
| m_apple_objc_ap (), |
| m_function_basename_index(), |
| m_function_fullname_index(), |
| m_function_method_index(), |
| m_function_selector_index(), |
| m_objc_class_selectors_index(), |
| m_global_index(), |
| m_type_index(), |
| m_namespace_index(), |
| m_indexed (false), |
| m_is_external_ast_source (false), |
| m_using_apple_tables (false), |
| m_supports_DW_AT_APPLE_objc_complete_type (eLazyBoolCalculate), |
| m_ranges(), |
| m_unique_ast_type_map () |
| { |
| } |
| |
| SymbolFileDWARF::~SymbolFileDWARF() |
| { |
| if (m_is_external_ast_source) |
| m_obj_file->GetModule()->GetClangASTContext().RemoveExternalSource (); |
| } |
| |
| static const ConstString & |
| GetDWARFMachOSegmentName () |
| { |
| static ConstString g_dwarf_section_name ("__DWARF"); |
| return g_dwarf_section_name; |
| } |
| |
| UniqueDWARFASTTypeMap & |
| SymbolFileDWARF::GetUniqueDWARFASTTypeMap () |
| { |
| if (m_debug_map_symfile) |
| return m_debug_map_symfile->GetUniqueDWARFASTTypeMap (); |
| return m_unique_ast_type_map; |
| } |
| |
| ClangASTContext & |
| SymbolFileDWARF::GetClangASTContext () |
| { |
| if (m_debug_map_symfile) |
| return m_debug_map_symfile->GetClangASTContext (); |
| |
| ClangASTContext &ast = m_obj_file->GetModule()->GetClangASTContext(); |
| if (!m_is_external_ast_source) |
| { |
| m_is_external_ast_source = true; |
| llvm::OwningPtr<clang::ExternalASTSource> ast_source_ap ( |
| new ClangExternalASTSourceCallbacks (SymbolFileDWARF::CompleteTagDecl, |
| SymbolFileDWARF::CompleteObjCInterfaceDecl, |
| SymbolFileDWARF::FindExternalVisibleDeclsByName, |
| SymbolFileDWARF::LayoutRecordType, |
| this)); |
| ast.SetExternalSource (ast_source_ap); |
| } |
| return ast; |
| } |
| |
| void |
| SymbolFileDWARF::InitializeObject() |
| { |
| // Install our external AST source callbacks so we can complete Clang types. |
| Module *module = m_obj_file->GetModule(); |
| if (module) |
| { |
| const SectionList *section_list = m_obj_file->GetSectionList(); |
| |
| const Section* section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); |
| |
| // Memory map the DWARF mach-o segment so we have everything mmap'ed |
| // to keep our heap memory usage down. |
| if (section) |
| section->MemoryMapSectionDataFromObjectFile(m_obj_file, m_dwarf_data); |
| } |
| get_apple_names_data(); |
| if (m_data_apple_names.GetByteSize() > 0) |
| { |
| m_apple_names_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_names, get_debug_str_data(), ".apple_names")); |
| if (m_apple_names_ap->IsValid()) |
| m_using_apple_tables = true; |
| else |
| m_apple_names_ap.reset(); |
| } |
| get_apple_types_data(); |
| if (m_data_apple_types.GetByteSize() > 0) |
| { |
| m_apple_types_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_types, get_debug_str_data(), ".apple_types")); |
| if (m_apple_types_ap->IsValid()) |
| m_using_apple_tables = true; |
| else |
| m_apple_types_ap.reset(); |
| } |
| |
| get_apple_namespaces_data(); |
| if (m_data_apple_namespaces.GetByteSize() > 0) |
| { |
| m_apple_namespaces_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_namespaces, get_debug_str_data(), ".apple_namespaces")); |
| if (m_apple_namespaces_ap->IsValid()) |
| m_using_apple_tables = true; |
| else |
| m_apple_namespaces_ap.reset(); |
| } |
| |
| get_apple_objc_data(); |
| if (m_data_apple_objc.GetByteSize() > 0) |
| { |
| m_apple_objc_ap.reset (new DWARFMappedHash::MemoryTable (m_data_apple_objc, get_debug_str_data(), ".apple_objc")); |
| if (m_apple_objc_ap->IsValid()) |
| m_using_apple_tables = true; |
| else |
| m_apple_objc_ap.reset(); |
| } |
| } |
| |
| bool |
| SymbolFileDWARF::SupportedVersion(uint16_t version) |
| { |
| return version == 2 || version == 3; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::CalculateAbilities () |
| { |
| uint32_t abilities = 0; |
| if (m_obj_file != NULL) |
| { |
| const Section* section = NULL; |
| const SectionList *section_list = m_obj_file->GetSectionList(); |
| if (section_list == NULL) |
| return 0; |
| |
| uint64_t debug_abbrev_file_size = 0; |
| uint64_t debug_aranges_file_size = 0; |
| uint64_t debug_frame_file_size = 0; |
| uint64_t debug_info_file_size = 0; |
| uint64_t debug_line_file_size = 0; |
| uint64_t debug_loc_file_size = 0; |
| uint64_t debug_macinfo_file_size = 0; |
| uint64_t debug_pubnames_file_size = 0; |
| uint64_t debug_pubtypes_file_size = 0; |
| uint64_t debug_ranges_file_size = 0; |
| uint64_t debug_str_file_size = 0; |
| |
| section = section_list->FindSectionByName(GetDWARFMachOSegmentName ()).get(); |
| |
| if (section) |
| section_list = §ion->GetChildren (); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugInfo, true).get(); |
| if (section != NULL) |
| { |
| debug_info_file_size = section->GetByteSize(); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugAbbrev, true).get(); |
| if (section) |
| debug_abbrev_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugAbbrevData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugAranges, true).get(); |
| if (section) |
| debug_aranges_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugArangesData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugFrame, true).get(); |
| if (section) |
| debug_frame_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugFrameData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugLine, true).get(); |
| if (section) |
| debug_line_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugLineData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugLoc, true).get(); |
| if (section) |
| debug_loc_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugLocData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugMacInfo, true).get(); |
| if (section) |
| debug_macinfo_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugMacInfoData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubNames, true).get(); |
| if (section) |
| debug_pubnames_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugPubNamesData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugPubTypes, true).get(); |
| if (section) |
| debug_pubtypes_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugPubTypesData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugRanges, true).get(); |
| if (section) |
| debug_ranges_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugRangesData); |
| |
| section = section_list->FindSectionByType (eSectionTypeDWARFDebugStr, true).get(); |
| if (section) |
| debug_str_file_size = section->GetByteSize(); |
| else |
| m_flags.Set (flagsGotDebugStrData); |
| } |
| |
| if (debug_abbrev_file_size > 0 && debug_info_file_size > 0) |
| abilities |= CompileUnits | Functions | Blocks | GlobalVariables | LocalVariables | VariableTypes; |
| |
| if (debug_line_file_size > 0) |
| abilities |= LineTables; |
| |
| if (debug_aranges_file_size > 0) |
| abilities |= AddressAcceleratorTable; |
| |
| if (debug_pubnames_file_size > 0) |
| abilities |= FunctionAcceleratorTable; |
| |
| if (debug_pubtypes_file_size > 0) |
| abilities |= TypeAcceleratorTable; |
| |
| if (debug_macinfo_file_size > 0) |
| abilities |= MacroInformation; |
| |
| if (debug_frame_file_size > 0) |
| abilities |= CallFrameInformation; |
| } |
| return abilities; |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::GetCachedSectionData (uint32_t got_flag, SectionType sect_type, DataExtractor &data) |
| { |
| if (m_flags.IsClear (got_flag)) |
| { |
| m_flags.Set (got_flag); |
| const SectionList *section_list = m_obj_file->GetSectionList(); |
| if (section_list) |
| { |
| Section *section = section_list->FindSectionByType(sect_type, true).get(); |
| if (section) |
| { |
| // See if we memory mapped the DWARF segment? |
| if (m_dwarf_data.GetByteSize()) |
| { |
| data.SetData(m_dwarf_data, section->GetOffset (), section->GetByteSize()); |
| } |
| else |
| { |
| if (section->ReadSectionDataFromObjectFile(m_obj_file, data) == 0) |
| data.Clear(); |
| } |
| } |
| } |
| } |
| return data; |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_abbrev_data() |
| { |
| return GetCachedSectionData (flagsGotDebugAbbrevData, eSectionTypeDWARFDebugAbbrev, m_data_debug_abbrev); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_aranges_data() |
| { |
| return GetCachedSectionData (flagsGotDebugArangesData, eSectionTypeDWARFDebugAranges, m_data_debug_aranges); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_frame_data() |
| { |
| return GetCachedSectionData (flagsGotDebugFrameData, eSectionTypeDWARFDebugFrame, m_data_debug_frame); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_info_data() |
| { |
| return GetCachedSectionData (flagsGotDebugInfoData, eSectionTypeDWARFDebugInfo, m_data_debug_info); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_line_data() |
| { |
| return GetCachedSectionData (flagsGotDebugLineData, eSectionTypeDWARFDebugLine, m_data_debug_line); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_loc_data() |
| { |
| return GetCachedSectionData (flagsGotDebugLocData, eSectionTypeDWARFDebugLoc, m_data_debug_loc); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_ranges_data() |
| { |
| return GetCachedSectionData (flagsGotDebugRangesData, eSectionTypeDWARFDebugRanges, m_data_debug_ranges); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_debug_str_data() |
| { |
| return GetCachedSectionData (flagsGotDebugStrData, eSectionTypeDWARFDebugStr, m_data_debug_str); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_apple_names_data() |
| { |
| return GetCachedSectionData (flagsGotAppleNamesData, eSectionTypeDWARFAppleNames, m_data_apple_names); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_apple_types_data() |
| { |
| return GetCachedSectionData (flagsGotAppleTypesData, eSectionTypeDWARFAppleTypes, m_data_apple_types); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_apple_namespaces_data() |
| { |
| return GetCachedSectionData (flagsGotAppleNamespacesData, eSectionTypeDWARFAppleNamespaces, m_data_apple_namespaces); |
| } |
| |
| const DataExtractor& |
| SymbolFileDWARF::get_apple_objc_data() |
| { |
| return GetCachedSectionData (flagsGotAppleObjCData, eSectionTypeDWARFAppleObjC, m_data_apple_objc); |
| } |
| |
| |
| DWARFDebugAbbrev* |
| SymbolFileDWARF::DebugAbbrev() |
| { |
| if (m_abbr.get() == NULL) |
| { |
| const DataExtractor &debug_abbrev_data = get_debug_abbrev_data(); |
| if (debug_abbrev_data.GetByteSize() > 0) |
| { |
| m_abbr.reset(new DWARFDebugAbbrev()); |
| if (m_abbr.get()) |
| m_abbr->Parse(debug_abbrev_data); |
| } |
| } |
| return m_abbr.get(); |
| } |
| |
| const DWARFDebugAbbrev* |
| SymbolFileDWARF::DebugAbbrev() const |
| { |
| return m_abbr.get(); |
| } |
| |
| |
| DWARFDebugInfo* |
| SymbolFileDWARF::DebugInfo() |
| { |
| if (m_info.get() == NULL) |
| { |
| Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); |
| if (get_debug_info_data().GetByteSize() > 0) |
| { |
| m_info.reset(new DWARFDebugInfo()); |
| if (m_info.get()) |
| { |
| m_info->SetDwarfData(this); |
| } |
| } |
| } |
| return m_info.get(); |
| } |
| |
| const DWARFDebugInfo* |
| SymbolFileDWARF::DebugInfo() const |
| { |
| return m_info.get(); |
| } |
| |
| DWARFCompileUnit* |
| SymbolFileDWARF::GetDWARFCompileUnitForUID(lldb::user_id_t cu_uid) |
| { |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info && UserIDMatches(cu_uid)) |
| return info->GetCompileUnit((dw_offset_t)cu_uid).get(); |
| return NULL; |
| } |
| |
| |
| DWARFDebugRanges* |
| SymbolFileDWARF::DebugRanges() |
| { |
| if (m_ranges.get() == NULL) |
| { |
| Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); |
| if (get_debug_ranges_data().GetByteSize() > 0) |
| { |
| m_ranges.reset(new DWARFDebugRanges()); |
| if (m_ranges.get()) |
| m_ranges->Extract(this); |
| } |
| } |
| return m_ranges.get(); |
| } |
| |
| const DWARFDebugRanges* |
| SymbolFileDWARF::DebugRanges() const |
| { |
| return m_ranges.get(); |
| } |
| |
| bool |
| SymbolFileDWARF::ParseCompileUnit (DWARFCompileUnit* curr_cu, CompUnitSP& compile_unit_sp) |
| { |
| if (curr_cu != NULL) |
| { |
| const DWARFDebugInfoEntry * cu_die = curr_cu->GetCompileUnitDIEOnly (); |
| if (cu_die) |
| { |
| const char * cu_die_name = cu_die->GetName(this, curr_cu); |
| const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, curr_cu, DW_AT_comp_dir, NULL); |
| LanguageType cu_language = (LanguageType)cu_die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_language, 0); |
| if (cu_die_name) |
| { |
| FileSpec cu_file_spec; |
| |
| if (cu_die_name[0] == '/' || cu_comp_dir == NULL || cu_comp_dir[0] == '\0') |
| { |
| // If we have a full path to the compile unit, we don't need to resolve |
| // the file. This can be expensive e.g. when the source files are NFS mounted. |
| cu_file_spec.SetFile (cu_die_name, false); |
| } |
| else |
| { |
| std::string fullpath(cu_comp_dir); |
| if (*fullpath.rbegin() != '/') |
| fullpath += '/'; |
| fullpath += cu_die_name; |
| cu_file_spec.SetFile (fullpath.c_str(), false); |
| } |
| |
| compile_unit_sp.reset(new CompileUnit (m_obj_file->GetModule(), |
| curr_cu, |
| cu_file_spec, |
| MakeUserID(curr_cu->GetOffset()), |
| cu_language)); |
| if (compile_unit_sp.get()) |
| { |
| curr_cu->SetUserData(compile_unit_sp.get()); |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::GetNumCompileUnits() |
| { |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info) |
| return info->GetNumCompileUnits(); |
| return 0; |
| } |
| |
| CompUnitSP |
| SymbolFileDWARF::ParseCompileUnitAtIndex(uint32_t cu_idx) |
| { |
| CompUnitSP comp_unit; |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info) |
| { |
| DWARFCompileUnit* curr_cu = info->GetCompileUnitAtIndex(cu_idx); |
| if (curr_cu != NULL) |
| { |
| // Our symbol vendor shouldn't be asking us to add a compile unit that |
| // has already been added to it, which this DWARF plug-in knows as it |
| // stores the lldb compile unit (CompileUnit) pointer in each |
| // DWARFCompileUnit object when it gets added. |
| assert(curr_cu->GetUserData() == NULL); |
| ParseCompileUnit(curr_cu, comp_unit); |
| } |
| } |
| return comp_unit; |
| } |
| |
| static void |
| AddRangesToBlock (Block& block, |
| DWARFDebugRanges::RangeList& ranges, |
| addr_t block_base_addr) |
| { |
| const size_t num_ranges = ranges.GetSize(); |
| for (size_t i = 0; i<num_ranges; ++i) |
| { |
| const DWARFDebugRanges::Range &range = ranges.GetEntryRef (i); |
| const addr_t range_base = range.GetRangeBase(); |
| assert (range_base >= block_base_addr); |
| block.AddRange(Block::Range (range_base - block_base_addr, range.GetByteSize()));; |
| } |
| block.FinalizeRanges (); |
| } |
| |
| |
| Function * |
| SymbolFileDWARF::ParseCompileUnitFunction (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die) |
| { |
| DWARFDebugRanges::RangeList func_ranges; |
| const char *name = NULL; |
| const char *mangled = NULL; |
| int decl_file = 0; |
| int decl_line = 0; |
| int decl_column = 0; |
| int call_file = 0; |
| int call_line = 0; |
| int call_column = 0; |
| DWARFExpression frame_base; |
| |
| assert (die->Tag() == DW_TAG_subprogram); |
| |
| if (die->Tag() != DW_TAG_subprogram) |
| return NULL; |
| |
| if (die->GetDIENamesAndRanges(this, dwarf_cu, name, mangled, func_ranges, decl_file, decl_line, decl_column, call_file, call_line, call_column, &frame_base)) |
| { |
| // Union of all ranges in the function DIE (if the function is discontiguous) |
| AddressRange func_range; |
| lldb::addr_t lowest_func_addr = func_ranges.GetMinRangeBase (0); |
| lldb::addr_t highest_func_addr = func_ranges.GetMaxRangeEnd (0); |
| if (lowest_func_addr != LLDB_INVALID_ADDRESS && lowest_func_addr <= highest_func_addr) |
| { |
| func_range.GetBaseAddress().ResolveAddressUsingFileSections (lowest_func_addr, m_obj_file->GetSectionList()); |
| if (func_range.GetBaseAddress().IsValid()) |
| func_range.SetByteSize(highest_func_addr - lowest_func_addr); |
| } |
| |
| if (func_range.GetBaseAddress().IsValid()) |
| { |
| Mangled func_name; |
| if (mangled) |
| func_name.SetValue(mangled, true); |
| else if (name) |
| func_name.SetValue(name, false); |
| |
| FunctionSP func_sp; |
| std::auto_ptr<Declaration> decl_ap; |
| if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
| decl_ap.reset(new Declaration (sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
| decl_line, |
| decl_column)); |
| |
| // Supply the type _only_ if it has already been parsed |
| Type *func_type = m_die_to_type.lookup (die); |
| |
| assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); |
| |
| func_range.GetBaseAddress().ResolveLinkedAddress(); |
| |
| const user_id_t func_user_id = MakeUserID(die->GetOffset()); |
| func_sp.reset(new Function (sc.comp_unit, |
| func_user_id, // UserID is the DIE offset |
| func_user_id, |
| func_name, |
| func_type, |
| func_range)); // first address range |
| |
| if (func_sp.get() != NULL) |
| { |
| if (frame_base.IsValid()) |
| func_sp->GetFrameBaseExpression() = frame_base; |
| sc.comp_unit->AddFunction(func_sp); |
| return func_sp.get(); |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseCompileUnitFunctions(const SymbolContext &sc) |
| { |
| assert (sc.comp_unit); |
| size_t functions_added = 0; |
| DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); |
| if (dwarf_cu) |
| { |
| DWARFDIECollection function_dies; |
| const size_t num_funtions = dwarf_cu->AppendDIEsWithTag (DW_TAG_subprogram, function_dies); |
| size_t func_idx; |
| for (func_idx = 0; func_idx < num_funtions; ++func_idx) |
| { |
| const DWARFDebugInfoEntry *die = function_dies.GetDIEPtrAtIndex(func_idx); |
| if (sc.comp_unit->FindFunctionByUID (MakeUserID(die->GetOffset())).get() == NULL) |
| { |
| if (ParseCompileUnitFunction(sc, dwarf_cu, die)) |
| ++functions_added; |
| } |
| } |
| //FixupTypes(); |
| } |
| return functions_added; |
| } |
| |
| bool |
| SymbolFileDWARF::ParseCompileUnitSupportFiles (const SymbolContext& sc, FileSpecList& support_files) |
| { |
| assert (sc.comp_unit); |
| DWARFCompileUnit* curr_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); |
| assert (curr_cu); |
| const DWARFDebugInfoEntry * cu_die = curr_cu->GetCompileUnitDIEOnly(); |
| |
| if (cu_die) |
| { |
| const char * cu_comp_dir = cu_die->GetAttributeValueAsString(this, curr_cu, DW_AT_comp_dir, NULL); |
| dw_offset_t stmt_list = cu_die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); |
| |
| // All file indexes in DWARF are one based and a file of index zero is |
| // supposed to be the compile unit itself. |
| support_files.Append (*sc.comp_unit); |
| |
| return DWARFDebugLine::ParseSupportFiles(get_debug_line_data(), cu_comp_dir, stmt_list, support_files); |
| } |
| return false; |
| } |
| |
| struct ParseDWARFLineTableCallbackInfo |
| { |
| LineTable* line_table; |
| const SectionList *section_list; |
| lldb::addr_t prev_sect_file_base_addr; |
| lldb::addr_t curr_sect_file_base_addr; |
| bool is_oso_for_debug_map; |
| bool prev_in_final_executable; |
| DWARFDebugLine::Row prev_row; |
| SectionSP prev_section_sp; |
| SectionSP curr_section_sp; |
| }; |
| |
| //---------------------------------------------------------------------- |
| // ParseStatementTableCallback |
| //---------------------------------------------------------------------- |
| static void |
| ParseDWARFLineTableCallback(dw_offset_t offset, const DWARFDebugLine::State& state, void* userData) |
| { |
| LineTable* line_table = ((ParseDWARFLineTableCallbackInfo*)userData)->line_table; |
| if (state.row == DWARFDebugLine::State::StartParsingLineTable) |
| { |
| // Just started parsing the line table |
| } |
| else if (state.row == DWARFDebugLine::State::DoneParsingLineTable) |
| { |
| // Done parsing line table, nothing to do for the cleanup |
| } |
| else |
| { |
| ParseDWARFLineTableCallbackInfo* info = (ParseDWARFLineTableCallbackInfo*)userData; |
| // We have a new row, lets append it |
| |
| if (info->curr_section_sp.get() == NULL || info->curr_section_sp->ContainsFileAddress(state.address) == false) |
| { |
| info->prev_section_sp = info->curr_section_sp; |
| info->prev_sect_file_base_addr = info->curr_sect_file_base_addr; |
| // If this is an end sequence entry, then we subtract one from the |
| // address to make sure we get an address that is not the end of |
| // a section. |
| if (state.end_sequence && state.address != 0) |
| info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address - 1); |
| else |
| info->curr_section_sp = info->section_list->FindSectionContainingFileAddress (state.address); |
| |
| if (info->curr_section_sp.get()) |
| info->curr_sect_file_base_addr = info->curr_section_sp->GetFileAddress (); |
| else |
| info->curr_sect_file_base_addr = 0; |
| } |
| if (info->curr_section_sp.get()) |
| { |
| lldb::addr_t curr_line_section_offset = state.address - info->curr_sect_file_base_addr; |
| // Check for the fancy section magic to determine if we |
| |
| if (info->is_oso_for_debug_map) |
| { |
| // When this is a debug map object file that contains DWARF |
| // (referenced from an N_OSO debug map nlist entry) we will have |
| // a file address in the file range for our section from the |
| // original .o file, and a load address in the executable that |
| // contains the debug map. |
| // |
| // If the sections for the file range and load range are |
| // different, we have a remapped section for the function and |
| // this address is resolved. If they are the same, then the |
| // function for this address didn't make it into the final |
| // executable. |
| bool curr_in_final_executable = info->curr_section_sp->GetLinkedSection () != NULL; |
| |
| // If we are doing DWARF with debug map, then we need to carefully |
| // add each line table entry as there may be gaps as functions |
| // get moved around or removed. |
| if (!info->prev_row.end_sequence && info->prev_section_sp.get()) |
| { |
| if (info->prev_in_final_executable) |
| { |
| bool terminate_previous_entry = false; |
| if (!curr_in_final_executable) |
| { |
| // Check for the case where the previous line entry |
| // in a function made it into the final executable, |
| // yet the current line entry falls in a function |
| // that didn't. The line table used to be contiguous |
| // through this address range but now it isn't. We |
| // need to terminate the previous line entry so |
| // that we can reconstruct the line range correctly |
| // for it and to keep the line table correct. |
| terminate_previous_entry = true; |
| } |
| else if (info->curr_section_sp.get() != info->prev_section_sp.get()) |
| { |
| // Check for cases where the line entries used to be |
| // contiguous address ranges, but now they aren't. |
| // This can happen when order files specify the |
| // ordering of the functions. |
| lldb::addr_t prev_line_section_offset = info->prev_row.address - info->prev_sect_file_base_addr; |
| Section *curr_sect = info->curr_section_sp.get(); |
| Section *prev_sect = info->prev_section_sp.get(); |
| assert (curr_sect->GetLinkedSection()); |
| assert (prev_sect->GetLinkedSection()); |
| lldb::addr_t object_file_addr_delta = state.address - info->prev_row.address; |
| lldb::addr_t curr_linked_file_addr = curr_sect->GetLinkedFileAddress() + curr_line_section_offset; |
| lldb::addr_t prev_linked_file_addr = prev_sect->GetLinkedFileAddress() + prev_line_section_offset; |
| lldb::addr_t linked_file_addr_delta = curr_linked_file_addr - prev_linked_file_addr; |
| if (object_file_addr_delta != linked_file_addr_delta) |
| terminate_previous_entry = true; |
| } |
| |
| if (terminate_previous_entry) |
| { |
| line_table->InsertLineEntry (info->prev_section_sp, |
| state.address - info->prev_sect_file_base_addr, |
| info->prev_row.line, |
| info->prev_row.column, |
| info->prev_row.file, |
| false, // is_stmt |
| false, // basic_block |
| false, // state.prologue_end |
| false, // state.epilogue_begin |
| true); // end_sequence); |
| } |
| } |
| } |
| |
| if (curr_in_final_executable) |
| { |
| line_table->InsertLineEntry (info->curr_section_sp, |
| curr_line_section_offset, |
| state.line, |
| state.column, |
| state.file, |
| state.is_stmt, |
| state.basic_block, |
| state.prologue_end, |
| state.epilogue_begin, |
| state.end_sequence); |
| info->prev_section_sp = info->curr_section_sp; |
| } |
| else |
| { |
| // If the current address didn't make it into the final |
| // executable, the current section will be the __text |
| // segment in the .o file, so we need to clear this so |
| // we can catch the next function that did make it into |
| // the final executable. |
| info->prev_section_sp.reset(); |
| info->curr_section_sp.reset(); |
| } |
| |
| info->prev_in_final_executable = curr_in_final_executable; |
| } |
| else |
| { |
| // We are not in an object file that contains DWARF for an |
| // N_OSO, this is just a normal DWARF file. The DWARF spec |
| // guarantees that the addresses will be in increasing order |
| // so, since we store line tables in file address order, we |
| // can always just append the line entry without needing to |
| // search for the correct insertion point (we don't need to |
| // use LineEntry::InsertLineEntry()). |
| line_table->AppendLineEntry (info->curr_section_sp, |
| curr_line_section_offset, |
| state.line, |
| state.column, |
| state.file, |
| state.is_stmt, |
| state.basic_block, |
| state.prologue_end, |
| state.epilogue_begin, |
| state.end_sequence); |
| } |
| } |
| |
| info->prev_row = state; |
| } |
| } |
| |
| bool |
| SymbolFileDWARF::ParseCompileUnitLineTable (const SymbolContext &sc) |
| { |
| assert (sc.comp_unit); |
| if (sc.comp_unit->GetLineTable() != NULL) |
| return true; |
| |
| DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); |
| if (dwarf_cu) |
| { |
| const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->GetCompileUnitDIEOnly(); |
| if (dwarf_cu_die) |
| { |
| const dw_offset_t cu_line_offset = dwarf_cu_die->GetAttributeValueAsUnsigned(this, dwarf_cu, DW_AT_stmt_list, DW_INVALID_OFFSET); |
| if (cu_line_offset != DW_INVALID_OFFSET) |
| { |
| std::auto_ptr<LineTable> line_table_ap(new LineTable(sc.comp_unit)); |
| if (line_table_ap.get()) |
| { |
| ParseDWARFLineTableCallbackInfo info = { |
| line_table_ap.get(), |
| m_obj_file->GetSectionList(), |
| 0, |
| 0, |
| m_debug_map_symfile != NULL, |
| false, |
| DWARFDebugLine::Row(), |
| SectionSP(), |
| SectionSP() |
| }; |
| uint32_t offset = cu_line_offset; |
| DWARFDebugLine::ParseStatementTable(get_debug_line_data(), &offset, ParseDWARFLineTableCallback, &info); |
| sc.comp_unit->SetLineTable(line_table_ap.release()); |
| return true; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseFunctionBlocks |
| ( |
| const SymbolContext& sc, |
| Block *parent_block, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *die, |
| addr_t subprogram_low_pc, |
| uint32_t depth |
| ) |
| { |
| size_t blocks_added = 0; |
| while (die != NULL) |
| { |
| dw_tag_t tag = die->Tag(); |
| |
| switch (tag) |
| { |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_subprogram: |
| case DW_TAG_lexical_block: |
| { |
| Block *block = NULL; |
| if (tag == DW_TAG_subprogram) |
| { |
| // Skip any DW_TAG_subprogram DIEs that are inside |
| // of a normal or inlined functions. These will be |
| // parsed on their own as separate entities. |
| |
| if (depth > 0) |
| break; |
| |
| block = parent_block; |
| } |
| else |
| { |
| BlockSP block_sp(new Block (MakeUserID(die->GetOffset()))); |
| parent_block->AddChild(block_sp); |
| block = block_sp.get(); |
| } |
| DWARFDebugRanges::RangeList ranges; |
| const char *name = NULL; |
| const char *mangled_name = NULL; |
| |
| int decl_file = 0; |
| int decl_line = 0; |
| int decl_column = 0; |
| int call_file = 0; |
| int call_line = 0; |
| int call_column = 0; |
| if (die->GetDIENamesAndRanges (this, |
| dwarf_cu, |
| name, |
| mangled_name, |
| ranges, |
| decl_file, decl_line, decl_column, |
| call_file, call_line, call_column)) |
| { |
| if (tag == DW_TAG_subprogram) |
| { |
| assert (subprogram_low_pc == LLDB_INVALID_ADDRESS); |
| subprogram_low_pc = ranges.GetMinRangeBase(0); |
| } |
| else if (tag == DW_TAG_inlined_subroutine) |
| { |
| // We get called here for inlined subroutines in two ways. |
| // The first time is when we are making the Function object |
| // for this inlined concrete instance. Since we're creating a top level block at |
| // here, the subprogram_low_pc will be LLDB_INVALID_ADDRESS. So we need to |
| // adjust the containing address. |
| // The second time is when we are parsing the blocks inside the function that contains |
| // the inlined concrete instance. Since these will be blocks inside the containing "real" |
| // function the offset will be for that function. |
| if (subprogram_low_pc == LLDB_INVALID_ADDRESS) |
| { |
| subprogram_low_pc = ranges.GetMinRangeBase(0); |
| } |
| } |
| |
| AddRangesToBlock (*block, ranges, subprogram_low_pc); |
| |
| if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) |
| { |
| std::auto_ptr<Declaration> decl_ap; |
| if (decl_file != 0 || decl_line != 0 || decl_column != 0) |
| decl_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(decl_file), |
| decl_line, decl_column)); |
| |
| std::auto_ptr<Declaration> call_ap; |
| if (call_file != 0 || call_line != 0 || call_column != 0) |
| call_ap.reset(new Declaration(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(call_file), |
| call_line, call_column)); |
| |
| block->SetInlinedFunctionInfo (name, mangled_name, decl_ap.get(), call_ap.get()); |
| } |
| |
| ++blocks_added; |
| |
| if (die->HasChildren()) |
| { |
| blocks_added += ParseFunctionBlocks (sc, |
| block, |
| dwarf_cu, |
| die->GetFirstChild(), |
| subprogram_low_pc, |
| depth + 1); |
| } |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| // Only parse siblings of the block if we are not at depth zero. A depth |
| // of zero indicates we are currently parsing the top level |
| // DW_TAG_subprogram DIE |
| |
| if (depth == 0) |
| die = NULL; |
| else |
| die = die->GetSibling(); |
| } |
| return blocks_added; |
| } |
| |
| bool |
| SymbolFileDWARF::ParseTemplateParameterInfos (DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *parent_die, |
| ClangASTContext::TemplateParameterInfos &template_param_infos) |
| { |
| |
| if (parent_die == NULL) |
| return NULL; |
| |
| const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); |
| |
| Args template_parameter_names; |
| for (const DWARFDebugInfoEntry *die = parent_die->GetFirstChild(); |
| die != NULL; |
| die = die->GetSibling()) |
| { |
| const dw_tag_t tag = die->Tag(); |
| |
| switch (tag) |
| { |
| case DW_TAG_template_type_parameter: |
| case DW_TAG_template_value_parameter: |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_attributes = die->GetAttributes (this, |
| dwarf_cu, |
| fixed_form_sizes, |
| attributes); |
| const char *name = NULL; |
| Type *lldb_type = NULL; |
| clang_type_t clang_type = NULL; |
| uint64_t uval64 = 0; |
| bool uval64_valid = false; |
| if (num_attributes > 0) |
| { |
| DWARFFormValue form_value; |
| for (size_t i=0; i<num_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| |
| switch (attr) |
| { |
| case DW_AT_name: |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| name = form_value.AsCString(&get_debug_str_data()); |
| break; |
| |
| case DW_AT_type: |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| const dw_offset_t type_die_offset = form_value.Reference(dwarf_cu); |
| lldb_type = ResolveTypeUID(type_die_offset); |
| if (lldb_type) |
| clang_type = lldb_type->GetClangForwardType(); |
| } |
| break; |
| |
| case DW_AT_const_value: |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| uval64_valid = true; |
| uval64 = form_value.Unsigned(); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (name && lldb_type && clang_type) |
| { |
| bool is_signed = false; |
| template_param_infos.names.push_back(name); |
| clang::QualType clang_qual_type (clang::QualType::getFromOpaquePtr (clang_type)); |
| if (tag == DW_TAG_template_value_parameter && ClangASTContext::IsIntegerType (clang_type, is_signed) && uval64_valid) |
| { |
| llvm::APInt apint (lldb_type->GetByteSize() * 8, uval64, is_signed); |
| template_param_infos.args.push_back (clang::TemplateArgument (llvm::APSInt(apint), clang_qual_type)); |
| } |
| else |
| { |
| template_param_infos.args.push_back (clang::TemplateArgument (clang_qual_type)); |
| } |
| } |
| else |
| { |
| return false; |
| } |
| |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| if (template_param_infos.args.empty()) |
| return false; |
| return template_param_infos.args.size() == template_param_infos.names.size(); |
| } |
| |
| clang::ClassTemplateDecl * |
| SymbolFileDWARF::ParseClassTemplateDecl (clang::DeclContext *decl_ctx, |
| lldb::AccessType access_type, |
| const char *parent_name, |
| int tag_decl_kind, |
| const ClangASTContext::TemplateParameterInfos &template_param_infos) |
| { |
| if (template_param_infos.IsValid()) |
| { |
| std::string template_basename(parent_name); |
| template_basename.erase (template_basename.find('<')); |
| ClangASTContext &ast = GetClangASTContext(); |
| |
| return ast.CreateClassTemplateDecl (decl_ctx, |
| access_type, |
| template_basename.c_str(), |
| tag_decl_kind, |
| template_param_infos); |
| } |
| return NULL; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseChildMembers |
| ( |
| const SymbolContext& sc, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *parent_die, |
| clang_type_t class_clang_type, |
| const LanguageType class_language, |
| std::vector<clang::CXXBaseSpecifier *>& base_classes, |
| std::vector<int>& member_accessibilities, |
| DWARFDIECollection& member_function_dies, |
| AccessType& default_accessibility, |
| bool &is_a_class, |
| LayoutInfo &layout_info |
| ) |
| { |
| if (parent_die == NULL) |
| return 0; |
| |
| size_t count = 0; |
| const DWARFDebugInfoEntry *die; |
| const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); |
| uint32_t member_idx = 0; |
| |
| for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) |
| { |
| dw_tag_t tag = die->Tag(); |
| |
| switch (tag) |
| { |
| case DW_TAG_member: |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_attributes = die->GetAttributes (this, |
| dwarf_cu, |
| fixed_form_sizes, |
| attributes); |
| if (num_attributes > 0) |
| { |
| Declaration decl; |
| //DWARFExpression location; |
| const char *name = NULL; |
| const char *prop_name = NULL; |
| const char *prop_getter_name = NULL; |
| const char *prop_setter_name = NULL; |
| uint32_t prop_attributes = 0; |
| |
| |
| bool is_artificial = false; |
| lldb::user_id_t encoding_uid = LLDB_INVALID_UID; |
| AccessType accessibility = eAccessNone; |
| uint32_t member_byte_offset = UINT32_MAX; |
| size_t byte_size = 0; |
| size_t bit_offset = 0; |
| size_t bit_size = 0; |
| uint32_t i; |
| for (i=0; i<num_attributes && !is_artificial; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; |
| case DW_AT_bit_offset: bit_offset = form_value.Unsigned(); break; |
| case DW_AT_bit_size: bit_size = form_value.Unsigned(); break; |
| case DW_AT_byte_size: byte_size = form_value.Unsigned(); break; |
| case DW_AT_data_member_location: |
| if (form_value.BlockData()) |
| { |
| Value initialValue(0); |
| Value memberOffset(0); |
| const DataExtractor& debug_info_data = get_debug_info_data(); |
| uint32_t block_length = form_value.Unsigned(); |
| uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); |
| if (DWARFExpression::Evaluate(NULL, // ExecutionContext * |
| NULL, // clang::ASTContext * |
| NULL, // ClangExpressionVariableList * |
| NULL, // ClangExpressionDeclMap * |
| NULL, // RegisterContext * |
| debug_info_data, |
| block_offset, |
| block_length, |
| eRegisterKindDWARF, |
| &initialValue, |
| memberOffset, |
| NULL)) |
| { |
| member_byte_offset = memberOffset.ResolveValue(NULL, NULL).UInt(); |
| } |
| } |
| break; |
| |
| case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType (form_value.Unsigned()); break; |
| case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; |
| case DW_AT_declaration: |
| case DW_AT_description: |
| case DW_AT_mutable: |
| case DW_AT_visibility: |
| |
| case DW_AT_APPLE_property_name: prop_name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_APPLE_property_getter: prop_getter_name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_APPLE_property_setter: prop_setter_name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_APPLE_property_attribute: prop_attributes = form_value.Unsigned(); break; |
| |
| default: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| // Clang has a DWARF generation bug where sometimes it |
| // represents fields that are references with bad byte size |
| // and bit size/offset information such as: |
| // |
| // DW_AT_byte_size( 0x00 ) |
| // DW_AT_bit_size( 0x40 ) |
| // DW_AT_bit_offset( 0xffffffffffffffc0 ) |
| // |
| // So check the bit offset to make sure it is sane, and if |
| // the values are not sane, remove them. If we don't do this |
| // then we will end up with a crash if we try to use this |
| // type in an expression when clang becomes unhappy with its |
| // recycled debug info. |
| |
| if (bit_offset > 128) |
| { |
| bit_size = 0; |
| bit_offset = 0; |
| } |
| |
| // FIXME: Make Clang ignore Objective-C accessibility for expressions |
| if (class_language == eLanguageTypeObjC || |
| class_language == eLanguageTypeObjC_plus_plus) |
| accessibility = eAccessNone; |
| |
| if (member_idx == 0 && !is_artificial && name && (strstr (name, "_vptr$") == name)) |
| { |
| // Not all compilers will mark the vtable pointer |
| // member as artificial (llvm-gcc). We can't have |
| // the virtual members in our classes otherwise it |
| // throws off all child offsets since we end up |
| // having and extra pointer sized member in our |
| // class layouts. |
| is_artificial = true; |
| } |
| |
| if (is_artificial == false) |
| { |
| Type *member_type = ResolveTypeUID(encoding_uid); |
| clang::FieldDecl *field_decl = NULL; |
| if (member_type) |
| { |
| if (accessibility == eAccessNone) |
| accessibility = default_accessibility; |
| member_accessibilities.push_back(accessibility); |
| |
| field_decl = GetClangASTContext().AddFieldToRecordType (class_clang_type, |
| name, |
| member_type->GetClangLayoutType(), |
| accessibility, |
| bit_size); |
| } |
| else |
| { |
| if (name) |
| GetObjectFile()->GetModule()->ReportError ("0x%8.8llx: DW_TAG_member '%s' refers to type 0x%8.8llx which was unable to be parsed", |
| MakeUserID(die->GetOffset()), |
| name, |
| encoding_uid); |
| else |
| GetObjectFile()->GetModule()->ReportError ("0x%8.8llx: DW_TAG_member refers to type 0x%8.8llx which was unable to be parsed", |
| MakeUserID(die->GetOffset()), |
| encoding_uid); |
| } |
| |
| if (member_byte_offset != UINT32_MAX || bit_size != 0) |
| { |
| ///////////////////////////////////////////////////////////// |
| // How to locate a field given the DWARF debug information |
| // |
| // AT_byte_size indicates the size of the word in which the |
| // bit offset must be interpreted. |
| // |
| // AT_data_member_location indicates the byte offset of the |
| // word from the base address of the structure. |
| // |
| // AT_bit_offset indicates how many bits into the word |
| // (according to the host endianness) the low-order bit of |
| // the field starts. AT_bit_offset can be negative. |
| // |
| // AT_bit_size indicates the size of the field in bits. |
| ///////////////////////////////////////////////////////////// |
| |
| ByteOrder object_endian = GetObjectFile()->GetModule()->GetArchitecture().GetDefaultEndian(); |
| |
| uint64_t total_bit_offset = 0; |
| |
| total_bit_offset += (member_byte_offset == UINT32_MAX ? 0 : (member_byte_offset * 8)); |
| |
| if (object_endian == eByteOrderLittle) |
| { |
| total_bit_offset += byte_size * 8; |
| total_bit_offset -= (bit_offset + bit_size); |
| } |
| else |
| { |
| total_bit_offset += bit_offset; |
| } |
| |
| layout_info.field_offsets.insert(std::make_pair(field_decl, total_bit_offset)); |
| } |
| if (prop_name != NULL) |
| { |
| |
| clang::ObjCIvarDecl *ivar_decl = clang::dyn_cast<clang::ObjCIvarDecl>(field_decl); |
| assert (ivar_decl != NULL); |
| |
| |
| GetClangASTContext().AddObjCClassProperty (class_clang_type, |
| prop_name, |
| 0, |
| ivar_decl, |
| prop_setter_name, |
| prop_getter_name, |
| prop_attributes); |
| } |
| } |
| } |
| ++member_idx; |
| } |
| break; |
| |
| case DW_TAG_subprogram: |
| // Let the type parsing code handle this one for us. |
| member_function_dies.Append (die); |
| break; |
| |
| case DW_TAG_inheritance: |
| { |
| is_a_class = true; |
| if (default_accessibility == eAccessNone) |
| default_accessibility = eAccessPrivate; |
| // TODO: implement DW_TAG_inheritance type parsing |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_attributes = die->GetAttributes (this, |
| dwarf_cu, |
| fixed_form_sizes, |
| attributes); |
| if (num_attributes > 0) |
| { |
| Declaration decl; |
| DWARFExpression location; |
| lldb::user_id_t encoding_uid = LLDB_INVALID_UID; |
| AccessType accessibility = default_accessibility; |
| bool is_virtual = false; |
| bool is_base_of_class = true; |
| off_t member_offset = 0; |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; |
| case DW_AT_data_member_location: |
| if (form_value.BlockData()) |
| { |
| Value initialValue(0); |
| Value memberOffset(0); |
| const DataExtractor& debug_info_data = get_debug_info_data(); |
| uint32_t block_length = form_value.Unsigned(); |
| uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); |
| if (DWARFExpression::Evaluate (NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| debug_info_data, |
| block_offset, |
| block_length, |
| eRegisterKindDWARF, |
| &initialValue, |
| memberOffset, |
| NULL)) |
| { |
| member_offset = memberOffset.ResolveValue(NULL, NULL).UInt(); |
| } |
| } |
| break; |
| |
| case DW_AT_accessibility: |
| accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| break; |
| |
| case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break; |
| default: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| Type *base_class_type = ResolveTypeUID(encoding_uid); |
| assert(base_class_type); |
| |
| clang_type_t base_class_clang_type = base_class_type->GetClangFullType(); |
| assert (base_class_clang_type); |
| if (class_language == eLanguageTypeObjC) |
| { |
| GetClangASTContext().SetObjCSuperClass(class_clang_type, base_class_clang_type); |
| } |
| else |
| { |
| base_classes.push_back (GetClangASTContext().CreateBaseClassSpecifier (base_class_clang_type, |
| accessibility, |
| is_virtual, |
| is_base_of_class)); |
| } |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return count; |
| } |
| |
| |
| clang::DeclContext* |
| SymbolFileDWARF::GetClangDeclContextContainingTypeUID (lldb::user_id_t type_uid) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info && UserIDMatches(type_uid)) |
| { |
| DWARFCompileUnitSP cu_sp; |
| const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); |
| if (die) |
| return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); |
| } |
| return NULL; |
| } |
| |
| clang::DeclContext* |
| SymbolFileDWARF::GetClangDeclContextForTypeUID (const lldb_private::SymbolContext &sc, lldb::user_id_t type_uid) |
| { |
| if (UserIDMatches(type_uid)) |
| return GetClangDeclContextForDIEOffset (sc, type_uid); |
| return NULL; |
| } |
| |
| Type* |
| SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) |
| { |
| if (UserIDMatches(type_uid)) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info) |
| { |
| DWARFCompileUnitSP cu_sp; |
| const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); |
| const bool assert_not_being_parsed = true; |
| return ResolveTypeUID (cu_sp.get(), type_die, assert_not_being_parsed); |
| } |
| } |
| return NULL; |
| } |
| |
| Type* |
| SymbolFileDWARF::ResolveTypeUID (DWARFCompileUnit* cu, const DWARFDebugInfoEntry* die, bool assert_not_being_parsed) |
| { |
| if (die != NULL) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, cu)); |
| |
| // We might be coming in in the middle of a type tree (a class |
| // withing a class, an enum within a class), so parse any needed |
| // parent DIEs before we get to this one... |
| const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); |
| switch (decl_ctx_die->Tag()) |
| { |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_class_type: |
| { |
| // Get the type, which could be a forward declaration |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent forward type for 0x%8.8x", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, cu), |
| decl_ctx_die->GetOffset()); |
| |
| Type *parent_type = ResolveTypeUID (cu, decl_ctx_die, assert_not_being_parsed); |
| if (child_requires_parent_class_union_or_struct_to_be_completed(die->Tag())) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' resolve parent full type for 0x%8.8x since die is a function", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, cu), |
| decl_ctx_die->GetOffset()); |
| // Ask the type to complete itself if it already hasn't since if we |
| // want a function (method or static) from a class, the class must |
| // create itself and add it's own methods and class functions. |
| if (parent_type) |
| parent_type->GetClangFullType(); |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| return ResolveType (cu, die); |
| } |
| return NULL; |
| } |
| |
| // This function is used when SymbolFileDWARFDebugMap owns a bunch of |
| // SymbolFileDWARF objects to detect if this DWARF file is the one that |
| // can resolve a clang_type. |
| bool |
| SymbolFileDWARF::HasForwardDeclForClangType (lldb::clang_type_t clang_type) |
| { |
| clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type); |
| const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers); |
| return die != NULL; |
| } |
| |
| |
| lldb::clang_type_t |
| SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (lldb::clang_type_t clang_type) |
| { |
| // We have a struct/union/class/enum that needs to be fully resolved. |
| clang_type_t clang_type_no_qualifiers = ClangASTType::RemoveFastQualifiers(clang_type); |
| const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (clang_type_no_qualifiers); |
| if (die == NULL) |
| { |
| // We have already resolved this type... |
| return clang_type; |
| } |
| // Once we start resolving this type, remove it from the forward declaration |
| // map in case anyone child members or other types require this type to get resolved. |
| // The type will get resolved when all of the calls to SymbolFileDWARF::ResolveClangOpaqueTypeDefinition |
| // are done. |
| m_forward_decl_clang_type_to_die.erase (clang_type_no_qualifiers); |
| |
| |
| // Disable external storage for this type so we don't get anymore |
| // clang::ExternalASTSource queries for this type. |
| ClangASTContext::SetHasExternalStorage (clang_type, false); |
| |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| |
| DWARFCompileUnit *curr_cu = debug_info->GetCompileUnitContainingDIE (die->GetOffset()).get(); |
| Type *type = m_die_to_type.lookup (die); |
| |
| const dw_tag_t tag = die->Tag(); |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "0x%8.8llx: %s '%s' resolving forward declaration...\n", |
| MakeUserID(die->GetOffset()), |
| DW_TAG_value_to_name(tag), |
| type->GetName().AsCString()); |
| assert (clang_type); |
| DWARFDebugInfoEntry::Attributes attributes; |
| |
| ClangASTContext &ast = GetClangASTContext(); |
| |
| switch (tag) |
| { |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_class_type: |
| ast.StartTagDeclarationDefinition (clang_type); |
| { |
| LayoutInfo layout_info; |
| if (die->HasChildren()) |
| { |
| |
| LanguageType class_language = eLanguageTypeUnknown; |
| bool is_objc_class = ClangASTContext::IsObjCClassType (clang_type); |
| if (is_objc_class) |
| class_language = eLanguageTypeObjC; |
| |
| int tag_decl_kind = -1; |
| AccessType default_accessibility = eAccessNone; |
| if (tag == DW_TAG_structure_type) |
| { |
| tag_decl_kind = clang::TTK_Struct; |
| default_accessibility = eAccessPublic; |
| } |
| else if (tag == DW_TAG_union_type) |
| { |
| tag_decl_kind = clang::TTK_Union; |
| default_accessibility = eAccessPublic; |
| } |
| else if (tag == DW_TAG_class_type) |
| { |
| tag_decl_kind = clang::TTK_Class; |
| default_accessibility = eAccessPrivate; |
| } |
| |
| SymbolContext sc(GetCompUnitForDWARFCompUnit(curr_cu)); |
| std::vector<clang::CXXBaseSpecifier *> base_classes; |
| std::vector<int> member_accessibilities; |
| bool is_a_class = false; |
| // Parse members and base classes first |
| DWARFDIECollection member_function_dies; |
| |
| ParseChildMembers (sc, |
| curr_cu, |
| die, |
| clang_type, |
| class_language, |
| base_classes, |
| member_accessibilities, |
| member_function_dies, |
| default_accessibility, |
| is_a_class, |
| layout_info); |
| |
| // Now parse any methods if there were any... |
| size_t num_functions = member_function_dies.Size(); |
| if (num_functions > 0) |
| { |
| for (size_t i=0; i<num_functions; ++i) |
| { |
| ResolveType(curr_cu, member_function_dies.GetDIEPtrAtIndex(i)); |
| } |
| } |
| |
| if (class_language == eLanguageTypeObjC) |
| { |
| std::string class_str (ClangASTType::GetTypeNameForOpaqueQualType(clang_type)); |
| if (!class_str.empty()) |
| { |
| |
| DIEArray method_die_offsets; |
| if (m_using_apple_tables) |
| { |
| if (m_apple_objc_ap.get()) |
| m_apple_objc_ap->FindByName(class_str.c_str(), method_die_offsets); |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| ConstString class_name (class_str.c_str()); |
| m_objc_class_selectors_index.Find (class_name, method_die_offsets); |
| } |
| |
| if (!method_die_offsets.empty()) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| |
| DWARFCompileUnit* method_cu = NULL; |
| const size_t num_matches = method_die_offsets.size(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = method_die_offsets[i]; |
| DWARFDebugInfoEntry *method_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &method_cu); |
| |
| if (method_die) |
| ResolveType (method_cu, method_die); |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_objc accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, class_str.c_str()); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| // If we have a DW_TAG_structure_type instead of a DW_TAG_class_type we |
| // need to tell the clang type it is actually a class. |
| if (class_language != eLanguageTypeObjC) |
| { |
| if (is_a_class && tag_decl_kind != clang::TTK_Class) |
| ast.SetTagTypeKind (clang_type, clang::TTK_Class); |
| } |
| |
| // Since DW_TAG_structure_type gets used for both classes |
| // and structures, we may need to set any DW_TAG_member |
| // fields to have a "private" access if none was specified. |
| // When we parsed the child members we tracked that actual |
| // accessibility value for each DW_TAG_member in the |
| // "member_accessibilities" array. If the value for the |
| // member is zero, then it was set to the "default_accessibility" |
| // which for structs was "public". Below we correct this |
| // by setting any fields to "private" that weren't correctly |
| // set. |
| if (is_a_class && !member_accessibilities.empty()) |
| { |
| // This is a class and all members that didn't have |
| // their access specified are private. |
| ast.SetDefaultAccessForRecordFields (clang_type, |
| eAccessPrivate, |
| &member_accessibilities.front(), |
| member_accessibilities.size()); |
| } |
| |
| if (!base_classes.empty()) |
| { |
| ast.SetBaseClassesForClassType (clang_type, |
| &base_classes.front(), |
| base_classes.size()); |
| |
| // Clang will copy each CXXBaseSpecifier in "base_classes" |
| // so we have to free them all. |
| ClangASTContext::DeleteBaseClassSpecifiers (&base_classes.front(), |
| base_classes.size()); |
| } |
| |
| } |
| |
| if (!layout_info.field_offsets.empty()) |
| { |
| if (type) |
| layout_info.bit_size = type->GetByteSize() * 8; |
| if (layout_info.bit_size == 0) |
| layout_info.bit_size = die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_byte_size, 0) * 8; |
| clang::QualType qual_type(clang::QualType::getFromOpaquePtr(clang_type)); |
| const clang::RecordType *record_type = clang::dyn_cast<clang::RecordType>(qual_type.getTypePtr()); |
| if (record_type) |
| { |
| const clang::RecordDecl *record_decl = record_type->getDecl(); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) caching layout info for record_decl = %p, bit_size = %llu, alignment = %llu, field_offsets[%u], base_offsets[0], vbase_offsets[0])", |
| clang_type, |
| record_decl, |
| layout_info.bit_size, |
| layout_info.alignment, |
| (uint32_t)layout_info.field_offsets.size()); |
| |
| llvm::DenseMap <const clang::FieldDecl *, uint64_t>::const_iterator pos, end = layout_info.field_offsets.end(); |
| for (pos = layout_info.field_offsets.begin(); pos != end; ++pos) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition (clang_type = %p) field = { bit_offset=%u, name='%s' }", |
| clang_type, |
| (uint32_t)pos->second, |
| pos->first->getNameAsString().c_str()); |
| } |
| } |
| m_record_decl_to_layout_map.insert(std::make_pair(record_decl, layout_info)); |
| } |
| } |
| } |
| ast.CompleteTagDeclarationDefinition (clang_type); |
| return clang_type; |
| |
| case DW_TAG_enumeration_type: |
| ast.StartTagDeclarationDefinition (clang_type); |
| if (die->HasChildren()) |
| { |
| SymbolContext sc(GetCompUnitForDWARFCompUnit(curr_cu)); |
| ParseChildEnumerators(sc, clang_type, type->GetByteSize(), curr_cu, die); |
| } |
| ast.CompleteTagDeclarationDefinition (clang_type); |
| return clang_type; |
| |
| default: |
| assert(false && "not a forward clang type decl!"); |
| break; |
| } |
| return NULL; |
| } |
| |
| Type* |
| SymbolFileDWARF::ResolveType (DWARFCompileUnit* curr_cu, const DWARFDebugInfoEntry* type_die, bool assert_not_being_parsed) |
| { |
| if (type_die != NULL) |
| { |
| Type *type = m_die_to_type.lookup (type_die); |
| |
| if (type == NULL) |
| type = GetTypeForDIE (curr_cu, type_die).get(); |
| |
| if (assert_not_being_parsed) |
| { |
| if (type != DIE_IS_BEING_PARSED) |
| return type; |
| |
| GetObjectFile()->GetModule()->ReportError ("Parsing a die that is being parsed die: 0x%8.8x: %s %s", |
| type_die->GetOffset(), |
| DW_TAG_value_to_name(type_die->Tag()), |
| type_die->GetName(this, curr_cu)); |
| |
| } |
| else |
| return type; |
| } |
| return NULL; |
| } |
| |
| CompileUnit* |
| SymbolFileDWARF::GetCompUnitForDWARFCompUnit (DWARFCompileUnit* curr_cu, uint32_t cu_idx) |
| { |
| // Check if the symbol vendor already knows about this compile unit? |
| if (curr_cu->GetUserData() == NULL) |
| { |
| // The symbol vendor doesn't know about this compile unit, we |
| // need to parse and add it to the symbol vendor object. |
| CompUnitSP dc_cu; |
| ParseCompileUnit(curr_cu, dc_cu); |
| if (dc_cu.get()) |
| { |
| // Figure out the compile unit index if we weren't given one |
| if (cu_idx == UINT32_MAX) |
| DebugInfo()->GetCompileUnit(curr_cu->GetOffset(), &cu_idx); |
| |
| m_obj_file->GetModule()->GetSymbolVendor()->SetCompileUnitAtIndex(dc_cu, cu_idx); |
| |
| if (m_debug_map_symfile) |
| m_debug_map_symfile->SetCompileUnit(this, dc_cu); |
| } |
| } |
| return (CompileUnit*)curr_cu->GetUserData(); |
| } |
| |
| bool |
| SymbolFileDWARF::GetFunction (DWARFCompileUnit* curr_cu, const DWARFDebugInfoEntry* func_die, SymbolContext& sc) |
| { |
| sc.Clear(); |
| // Check if the symbol vendor already knows about this compile unit? |
| sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, UINT32_MAX); |
| |
| sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(func_die->GetOffset())).get(); |
| if (sc.function == NULL) |
| sc.function = ParseCompileUnitFunction(sc, curr_cu, func_die); |
| |
| if (sc.function) |
| { |
| sc.module_sp = sc.function->CalculateSymbolContextModule()->shared_from_this(); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::ResolveSymbolContext (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) |
| { |
| Timer scoped_timer(__PRETTY_FUNCTION__, |
| "SymbolFileDWARF::ResolveSymbolContext (so_addr = { section = %p, offset = 0x%llx }, resolve_scope = 0x%8.8x)", |
| so_addr.GetSection(), |
| so_addr.GetOffset(), |
| resolve_scope); |
| uint32_t resolved = 0; |
| if (resolve_scope & ( eSymbolContextCompUnit | |
| eSymbolContextFunction | |
| eSymbolContextBlock | |
| eSymbolContextLineEntry)) |
| { |
| lldb::addr_t file_vm_addr = so_addr.GetFileAddress(); |
| |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info) |
| { |
| dw_offset_t cu_offset = debug_info->GetCompileUnitAranges().FindAddress(file_vm_addr); |
| if (cu_offset != DW_INVALID_OFFSET) |
| { |
| uint32_t cu_idx; |
| DWARFCompileUnit* curr_cu = debug_info->GetCompileUnit(cu_offset, &cu_idx).get(); |
| if (curr_cu) |
| { |
| sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); |
| assert(sc.comp_unit != NULL); |
| resolved |= eSymbolContextCompUnit; |
| |
| if (resolve_scope & eSymbolContextLineEntry) |
| { |
| LineTable *line_table = sc.comp_unit->GetLineTable(); |
| if (line_table != NULL) |
| { |
| if (so_addr.IsLinkedAddress()) |
| { |
| Address linked_addr (so_addr); |
| linked_addr.ResolveLinkedAddress(); |
| if (line_table->FindLineEntryByAddress (linked_addr, sc.line_entry)) |
| { |
| resolved |= eSymbolContextLineEntry; |
| } |
| } |
| else if (line_table->FindLineEntryByAddress (so_addr, sc.line_entry)) |
| { |
| resolved |= eSymbolContextLineEntry; |
| } |
| } |
| } |
| |
| if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) |
| { |
| DWARFDebugInfoEntry *function_die = NULL; |
| DWARFDebugInfoEntry *block_die = NULL; |
| if (resolve_scope & eSymbolContextBlock) |
| { |
| curr_cu->LookupAddress(file_vm_addr, &function_die, &block_die); |
| } |
| else |
| { |
| curr_cu->LookupAddress(file_vm_addr, &function_die, NULL); |
| } |
| |
| if (function_die != NULL) |
| { |
| sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); |
| if (sc.function == NULL) |
| sc.function = ParseCompileUnitFunction(sc, curr_cu, function_die); |
| } |
| |
| if (sc.function != NULL) |
| { |
| resolved |= eSymbolContextFunction; |
| |
| if (resolve_scope & eSymbolContextBlock) |
| { |
| Block& block = sc.function->GetBlock (true); |
| |
| if (block_die != NULL) |
| sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); |
| else |
| sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); |
| if (sc.block) |
| resolved |= eSymbolContextBlock; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| return resolved; |
| } |
| |
| |
| |
| uint32_t |
| SymbolFileDWARF::ResolveSymbolContext(const FileSpec& file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list) |
| { |
| const uint32_t prev_size = sc_list.GetSize(); |
| if (resolve_scope & eSymbolContextCompUnit) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info) |
| { |
| uint32_t cu_idx; |
| DWARFCompileUnit* curr_cu = NULL; |
| |
| for (cu_idx = 0; (curr_cu = debug_info->GetCompileUnitAtIndex(cu_idx)) != NULL; ++cu_idx) |
| { |
| CompileUnit *dc_cu = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); |
| bool file_spec_matches_cu_file_spec = dc_cu != NULL && FileSpec::Compare(file_spec, *dc_cu, false) == 0; |
| if (check_inlines || file_spec_matches_cu_file_spec) |
| { |
| SymbolContext sc (m_obj_file->GetModule()); |
| sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, cu_idx); |
| assert(sc.comp_unit != NULL); |
| |
| uint32_t file_idx = UINT32_MAX; |
| |
| // If we are looking for inline functions only and we don't |
| // find it in the support files, we are done. |
| if (check_inlines) |
| { |
| file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); |
| if (file_idx == UINT32_MAX) |
| continue; |
| } |
| |
| if (line != 0) |
| { |
| LineTable *line_table = sc.comp_unit->GetLineTable(); |
| |
| if (line_table != NULL && line != 0) |
| { |
| // We will have already looked up the file index if |
| // we are searching for inline entries. |
| if (!check_inlines) |
| file_idx = sc.comp_unit->GetSupportFiles().FindFileIndex (1, file_spec, true); |
| |
| if (file_idx != UINT32_MAX) |
| { |
| uint32_t found_line; |
| uint32_t line_idx = line_table->FindLineEntryIndexByFileIndex (0, file_idx, line, false, &sc.line_entry); |
| found_line = sc.line_entry.line; |
| |
| while (line_idx != UINT32_MAX) |
| { |
| sc.function = NULL; |
| sc.block = NULL; |
| if (resolve_scope & (eSymbolContextFunction | eSymbolContextBlock)) |
| { |
| const lldb::addr_t file_vm_addr = sc.line_entry.range.GetBaseAddress().GetFileAddress(); |
| if (file_vm_addr != LLDB_INVALID_ADDRESS) |
| { |
| DWARFDebugInfoEntry *function_die = NULL; |
| DWARFDebugInfoEntry *block_die = NULL; |
| curr_cu->LookupAddress(file_vm_addr, &function_die, resolve_scope & eSymbolContextBlock ? &block_die : NULL); |
| |
| if (function_die != NULL) |
| { |
| sc.function = sc.comp_unit->FindFunctionByUID (MakeUserID(function_die->GetOffset())).get(); |
| if (sc.function == NULL) |
| sc.function = ParseCompileUnitFunction(sc, curr_cu, function_die); |
| } |
| |
| if (sc.function != NULL) |
| { |
| Block& block = sc.function->GetBlock (true); |
| |
| if (block_die != NULL) |
| sc.block = block.FindBlockByID (MakeUserID(block_die->GetOffset())); |
| else |
| sc.block = block.FindBlockByID (MakeUserID(function_die->GetOffset())); |
| } |
| } |
| } |
| |
| sc_list.Append(sc); |
| line_idx = line_table->FindLineEntryIndexByFileIndex (line_idx + 1, file_idx, found_line, true, &sc.line_entry); |
| } |
| } |
| } |
| else if (file_spec_matches_cu_file_spec && !check_inlines) |
| { |
| // only append the context if we aren't looking for inline call sites |
| // by file and line and if the file spec matches that of the compile unit |
| sc_list.Append(sc); |
| } |
| } |
| else if (file_spec_matches_cu_file_spec && !check_inlines) |
| { |
| // only append the context if we aren't looking for inline call sites |
| // by file and line and if the file spec matches that of the compile unit |
| sc_list.Append(sc); |
| } |
| |
| if (!check_inlines) |
| break; |
| } |
| } |
| } |
| } |
| return sc_list.GetSize() - prev_size; |
| } |
| |
| void |
| SymbolFileDWARF::Index () |
| { |
| if (m_indexed) |
| return; |
| m_indexed = true; |
| Timer scoped_timer (__PRETTY_FUNCTION__, |
| "SymbolFileDWARF::Index (%s)", |
| GetObjectFile()->GetFileSpec().GetFilename().AsCString()); |
| |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info) |
| { |
| uint32_t cu_idx = 0; |
| const uint32_t num_compile_units = GetNumCompileUnits(); |
| for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) |
| { |
| DWARFCompileUnit* curr_cu = debug_info->GetCompileUnitAtIndex(cu_idx); |
| |
| bool clear_dies = curr_cu->ExtractDIEsIfNeeded (false) > 1; |
| |
| curr_cu->Index (cu_idx, |
| m_function_basename_index, |
| m_function_fullname_index, |
| m_function_method_index, |
| m_function_selector_index, |
| m_objc_class_selectors_index, |
| m_global_index, |
| m_type_index, |
| m_namespace_index); |
| |
| // Keep memory down by clearing DIEs if this generate function |
| // caused them to be parsed |
| if (clear_dies) |
| curr_cu->ClearDIEs (true); |
| } |
| |
| m_function_basename_index.Finalize(); |
| m_function_fullname_index.Finalize(); |
| m_function_method_index.Finalize(); |
| m_function_selector_index.Finalize(); |
| m_objc_class_selectors_index.Finalize(); |
| m_global_index.Finalize(); |
| m_type_index.Finalize(); |
| m_namespace_index.Finalize(); |
| |
| #if defined (ENABLE_DEBUG_PRINTF) |
| StreamFile s(stdout, false); |
| s.Printf ("DWARF index for '%s/%s':", |
| GetObjectFile()->GetFileSpec().GetDirectory().AsCString(), |
| GetObjectFile()->GetFileSpec().GetFilename().AsCString()); |
| s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); |
| s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); |
| s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); |
| s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); |
| s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); |
| s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); |
| s.Printf("\nTypes:\n"); m_type_index.Dump (&s); |
| s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); |
| #endif |
| } |
| } |
| |
| bool |
| SymbolFileDWARF::NamespaceDeclMatchesThisSymbolFile (const ClangNamespaceDecl *namespace_decl) |
| { |
| if (namespace_decl == NULL) |
| { |
| // Invalid namespace decl which means we aren't matching only things |
| // in this symbol file, so return true to indicate it matches this |
| // symbol file. |
| return true; |
| } |
| |
| clang::ASTContext *namespace_ast = namespace_decl->GetASTContext(); |
| |
| if (namespace_ast == NULL) |
| return true; // No AST in the "namespace_decl", return true since it |
| // could then match any symbol file, including this one |
| |
| if (namespace_ast == GetClangASTContext().getASTContext()) |
| return true; // The ASTs match, return true |
| |
| // The namespace AST was valid, and it does not match... |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage(log.get(), "Valid namespace does not match symbol file"); |
| |
| return false; |
| } |
| |
| bool |
| SymbolFileDWARF::DIEIsInNamespace (const ClangNamespaceDecl *namespace_decl, |
| DWARFCompileUnit* cu, |
| const DWARFDebugInfoEntry* die) |
| { |
| // No namespace specified, so the answesr i |
| if (namespace_decl == NULL) |
| return true; |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); |
| if (decl_ctx_die) |
| { |
| |
| clang::NamespaceDecl *clang_namespace_decl = namespace_decl->GetNamespaceDecl(); |
| if (clang_namespace_decl) |
| { |
| if (decl_ctx_die->Tag() != DW_TAG_namespace) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage(log.get(), "Found a match, but its parent is not a namespace"); |
| return false; |
| } |
| |
| DeclContextToDIEMap::iterator pos = m_decl_ctx_to_die.find(clang_namespace_decl); |
| |
| if (pos == m_decl_ctx_to_die.end()) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage(log.get(), "Found a match in a namespace, but its parent is not the requested namespace"); |
| |
| return false; |
| } |
| |
| return pos->second.count (decl_ctx_die); |
| } |
| else |
| { |
| // We have a namespace_decl that was not NULL but it contained |
| // a NULL "clang::NamespaceDecl", so this means the global namespace |
| // So as long the the contained decl context DIE isn't a namespace |
| // we should be ok. |
| if (decl_ctx_die->Tag() != DW_TAG_namespace) |
| return true; |
| } |
| } |
| |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage(log.get(), "Found a match, but its parent doesn't exist"); |
| |
| return false; |
| } |
| uint32_t |
| SymbolFileDWARF::FindGlobalVariables (const ConstString &name, const lldb_private::ClangNamespaceDecl *namespace_decl, bool append, uint32_t max_matches, VariableList& variables) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", namespace_decl=%p, append=%u, max_matches=%u, variables)", |
| name.GetCString(), |
| namespace_decl, |
| append, |
| max_matches); |
| } |
| |
| if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) |
| return 0; |
| |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info == NULL) |
| return 0; |
| |
| // If we aren't appending the results to this list, then clear the list |
| if (!append) |
| variables.Clear(); |
| |
| // Remember how many variables are in the list before we search in case |
| // we are appending the results to a variable list. |
| const uint32_t original_size = variables.GetSize(); |
| |
| DIEArray die_offsets; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_names_ap.get()) |
| { |
| const char *name_cstr = name.GetCString(); |
| const char *base_name_start; |
| const char *base_name_end = NULL; |
| |
| if (!CPPLanguageRuntime::StripNamespacesFromVariableName(name_cstr, base_name_start, base_name_end)) |
| base_name_start = name_cstr; |
| |
| m_apple_names_ap->FindByName (base_name_start, die_offsets); |
| } |
| } |
| else |
| { |
| // Index the DWARF if we haven't already |
| if (!m_indexed) |
| Index (); |
| |
| m_global_index.Find (name, die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| if (num_matches) |
| { |
| SymbolContext sc; |
| sc.module_sp = m_obj_file->GetModule()->shared_from_this(); |
| assert (sc.module_sp); |
| |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| DWARFCompileUnit* dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| |
| if (die) |
| { |
| sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); |
| assert(sc.comp_unit != NULL); |
| |
| if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); |
| |
| if (variables.GetSize() - original_size >= max_matches) |
| break; |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, name.GetCString()); |
| } |
| } |
| } |
| } |
| |
| // Return the number of variable that were appended to the list |
| return variables.GetSize() - original_size; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::FindGlobalVariables(const RegularExpression& regex, bool append, uint32_t max_matches, VariableList& variables) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", append=%u, max_matches=%u, variables)", |
| regex.GetText(), |
| append, |
| max_matches); |
| } |
| |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info == NULL) |
| return 0; |
| |
| // If we aren't appending the results to this list, then clear the list |
| if (!append) |
| variables.Clear(); |
| |
| // Remember how many variables are in the list before we search in case |
| // we are appending the results to a variable list. |
| const uint32_t original_size = variables.GetSize(); |
| |
| DIEArray die_offsets; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_names_ap.get()) |
| { |
| DWARFMappedHash::DIEInfoArray hash_data_array; |
| if (m_apple_names_ap->AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) |
| DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); |
| } |
| } |
| else |
| { |
| // Index the DWARF if we haven't already |
| if (!m_indexed) |
| Index (); |
| |
| m_global_index.Find (regex, die_offsets); |
| } |
| |
| SymbolContext sc; |
| sc.module_sp = m_obj_file->GetModule()->shared_from_this(); |
| assert (sc.module_sp); |
| |
| DWARFCompileUnit* dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| const size_t num_matches = die_offsets.size(); |
| if (num_matches) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| |
| if (die) |
| { |
| sc.comp_unit = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); |
| |
| ParseVariables(sc, dwarf_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); |
| |
| if (variables.GetSize() - original_size >= max_matches) |
| break; |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for regex '%s')\n", |
| die_offset, regex.GetText()); |
| } |
| } |
| } |
| } |
| |
| // Return the number of variable that were appended to the list |
| return variables.GetSize() - original_size; |
| } |
| |
| |
| bool |
| SymbolFileDWARF::ResolveFunction (dw_offset_t die_offset, |
| DWARFCompileUnit *&dwarf_cu, |
| SymbolContextList& sc_list) |
| { |
| const DWARFDebugInfoEntry *die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| return ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| |
| |
| bool |
| SymbolFileDWARF::ResolveFunction (DWARFCompileUnit *cu, |
| const DWARFDebugInfoEntry *die, |
| SymbolContextList& sc_list) |
| { |
| SymbolContext sc; |
| |
| if (die == NULL) |
| return false; |
| |
| // If we were passed a die that is not a function, just return false... |
| if (die->Tag() != DW_TAG_subprogram && die->Tag() != DW_TAG_inlined_subroutine) |
| return false; |
| |
| const DWARFDebugInfoEntry* inlined_die = NULL; |
| if (die->Tag() == DW_TAG_inlined_subroutine) |
| { |
| inlined_die = die; |
| |
| while ((die = die->GetParent()) != NULL) |
| { |
| if (die->Tag() == DW_TAG_subprogram) |
| break; |
| } |
| } |
| assert (die->Tag() == DW_TAG_subprogram); |
| if (GetFunction (cu, die, sc)) |
| { |
| Address addr; |
| // Parse all blocks if needed |
| if (inlined_die) |
| { |
| sc.block = sc.function->GetBlock (true).FindBlockByID (MakeUserID(inlined_die->GetOffset())); |
| assert (sc.block != NULL); |
| if (sc.block->GetStartAddress (addr) == false) |
| addr.Clear(); |
| } |
| else |
| { |
| sc.block = NULL; |
| addr = sc.function->GetAddressRange().GetBaseAddress(); |
| } |
| |
| if (addr.IsValid()) |
| { |
| sc_list.Append(sc); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void |
| SymbolFileDWARF::FindFunctions (const ConstString &name, |
| const NameToDIE &name_to_die, |
| SymbolContextList& sc_list) |
| { |
| DIEArray die_offsets; |
| if (name_to_die.Find (name, die_offsets)) |
| { |
| ParseFunctions (die_offsets, sc_list); |
| } |
| } |
| |
| |
| void |
| SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, |
| const NameToDIE &name_to_die, |
| SymbolContextList& sc_list) |
| { |
| DIEArray die_offsets; |
| if (name_to_die.Find (regex, die_offsets)) |
| { |
| ParseFunctions (die_offsets, sc_list); |
| } |
| } |
| |
| |
| void |
| SymbolFileDWARF::FindFunctions (const RegularExpression ®ex, |
| const DWARFMappedHash::MemoryTable &memory_table, |
| SymbolContextList& sc_list) |
| { |
| DIEArray die_offsets; |
| DWARFMappedHash::DIEInfoArray hash_data_array; |
| if (memory_table.AppendAllDIEsThatMatchingRegex (regex, hash_data_array)) |
| { |
| DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); |
| ParseFunctions (die_offsets, sc_list); |
| } |
| } |
| |
| void |
| SymbolFileDWARF::ParseFunctions (const DIEArray &die_offsets, |
| SymbolContextList& sc_list) |
| { |
| const size_t num_matches = die_offsets.size(); |
| if (num_matches) |
| { |
| SymbolContext sc; |
| |
| DWARFCompileUnit* dwarf_cu = NULL; |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| ResolveFunction (die_offset, dwarf_cu, sc_list); |
| } |
| } |
| } |
| |
| bool |
| SymbolFileDWARF::FunctionDieMatchesPartialName (const DWARFDebugInfoEntry* die, |
| const DWARFCompileUnit *dwarf_cu, |
| uint32_t name_type_mask, |
| const char *partial_name, |
| const char *base_name_start, |
| const char *base_name_end) |
| { |
| // If we are looking only for methods, throw away all the ones that aren't in C++ classes: |
| if (name_type_mask == eFunctionNameTypeMethod |
| || name_type_mask == eFunctionNameTypeBase) |
| { |
| clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIEOffset(die->GetOffset()); |
| if (!containing_decl_ctx) |
| return false; |
| |
| bool is_cxx_method = DeclKindIsCXXClass(containing_decl_ctx->getDeclKind()); |
| |
| if (!is_cxx_method && name_type_mask == eFunctionNameTypeMethod) |
| return false; |
| if (is_cxx_method && name_type_mask == eFunctionNameTypeBase) |
| return false; |
| } |
| |
| // Now we need to check whether the name we got back for this type matches the extra specifications |
| // that were in the name we're looking up: |
| if (base_name_start != partial_name || *base_name_end != '\0') |
| { |
| // First see if the stuff to the left matches the full name. To do that let's see if |
| // we can pull out the mips linkage name attribute: |
| |
| Mangled best_name; |
| |
| DWARFDebugInfoEntry::Attributes attributes; |
| die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| uint32_t idx = attributes.FindAttributeIndex(DW_AT_MIPS_linkage_name); |
| if (idx != UINT32_MAX) |
| { |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, idx, form_value)) |
| { |
| const char *name = form_value.AsCString(&get_debug_str_data()); |
| best_name.SetValue (name, true); |
| } |
| } |
| if (best_name) |
| { |
| const char *demangled = best_name.GetDemangledName().GetCString(); |
| if (demangled) |
| { |
| std::string name_no_parens(partial_name, base_name_end - partial_name); |
| if (strstr (demangled, name_no_parens.c_str()) == NULL) |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::FindFunctions (const ConstString &name, |
| const lldb_private::ClangNamespaceDecl *namespace_decl, |
| uint32_t name_type_mask, |
| bool append, |
| SymbolContextList& sc_list) |
| { |
| Timer scoped_timer (__PRETTY_FUNCTION__, |
| "SymbolFileDWARF::FindFunctions (name = '%s')", |
| name.AsCString()); |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, append=%u, sc_list)", |
| name.GetCString(), |
| name_type_mask, |
| append); |
| } |
| |
| // If we aren't appending the results to this list, then clear the list |
| if (!append) |
| sc_list.Clear(); |
| |
| if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) |
| return 0; |
| |
| // If name is empty then we won't find anything. |
| if (name.IsEmpty()) |
| return 0; |
| |
| // Remember how many sc_list are in the list before we search in case |
| // we are appending the results to a variable list. |
| |
| const uint32_t original_size = sc_list.GetSize(); |
| |
| const char *name_cstr = name.GetCString(); |
| uint32_t effective_name_type_mask = eFunctionNameTypeNone; |
| const char *base_name_start = name_cstr; |
| const char *base_name_end = name_cstr + strlen(name_cstr); |
| |
| if (name_type_mask & eFunctionNameTypeAuto) |
| { |
| if (CPPLanguageRuntime::IsCPPMangledName (name_cstr)) |
| effective_name_type_mask = eFunctionNameTypeFull; |
| else if (ObjCLanguageRuntime::IsPossibleObjCMethodName (name_cstr)) |
| effective_name_type_mask = eFunctionNameTypeFull; |
| else |
| { |
| if (ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) |
| effective_name_type_mask |= eFunctionNameTypeSelector; |
| |
| if (CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) |
| effective_name_type_mask |= (eFunctionNameTypeMethod | eFunctionNameTypeBase); |
| } |
| } |
| else |
| { |
| effective_name_type_mask = name_type_mask; |
| if (effective_name_type_mask & eFunctionNameTypeMethod || name_type_mask & eFunctionNameTypeBase) |
| { |
| // If they've asked for a CPP method or function name and it can't be that, we don't |
| // even need to search for CPP methods or names. |
| if (!CPPLanguageRuntime::IsPossibleCPPCall(name_cstr, base_name_start, base_name_end)) |
| { |
| effective_name_type_mask &= ~(eFunctionNameTypeMethod | eFunctionNameTypeBase); |
| if (effective_name_type_mask == eFunctionNameTypeNone) |
| return 0; |
| } |
| } |
| |
| if (effective_name_type_mask & eFunctionNameTypeSelector) |
| { |
| if (!ObjCLanguageRuntime::IsPossibleObjCSelector(name_cstr)) |
| { |
| effective_name_type_mask &= ~(eFunctionNameTypeSelector); |
| if (effective_name_type_mask == eFunctionNameTypeNone) |
| return 0; |
| } |
| } |
| } |
| |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info == NULL) |
| return 0; |
| |
| DWARFCompileUnit *dwarf_cu = NULL; |
| if (m_using_apple_tables) |
| { |
| if (m_apple_names_ap.get()) |
| { |
| |
| DIEArray die_offsets; |
| |
| uint32_t num_matches = 0; |
| |
| if (effective_name_type_mask & eFunctionNameTypeFull) |
| { |
| // If they asked for the full name, match what they typed. At some point we may |
| // want to canonicalize this (strip double spaces, etc. For now, we just add all the |
| // dies that we find by exact match. |
| num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); |
| for (uint32_t i = 0; i < num_matches; i++) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| if (die) |
| { |
| if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", |
| die_offset, name_cstr); |
| } |
| } |
| } |
| else |
| { |
| if (effective_name_type_mask & eFunctionNameTypeSelector) |
| { |
| if (namespace_decl && *namespace_decl) |
| return 0; // no selectors in namespaces |
| |
| num_matches = m_apple_names_ap->FindByName (name_cstr, die_offsets); |
| // Now make sure these are actually ObjC methods. In this case we can simply look up the name, |
| // and if it is an ObjC method name, we're good. |
| |
| for (uint32_t i = 0; i < num_matches; i++) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| if (die) |
| { |
| const char *die_name = die->GetName(this, dwarf_cu); |
| if (ObjCLanguageRuntime::IsPossibleObjCMethodName(die_name)) |
| ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportError ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", |
| die_offset, name_cstr); |
| } |
| } |
| die_offsets.clear(); |
| } |
| |
| if (effective_name_type_mask & eFunctionNameTypeMethod |
| || effective_name_type_mask & eFunctionNameTypeBase) |
| { |
| if ((effective_name_type_mask & eFunctionNameTypeMethod) && |
| (namespace_decl && *namespace_decl)) |
| return 0; // no methods in namespaces |
| |
| // The apple_names table stores just the "base name" of C++ methods in the table. So we have to |
| // extract the base name, look that up, and if there is any other information in the name we were |
| // passed in we have to post-filter based on that. |
| |
| // FIXME: Arrange the logic above so that we don't calculate the base name twice: |
| std::string base_name(base_name_start, base_name_end - base_name_start); |
| num_matches = m_apple_names_ap->FindByName (base_name.c_str(), die_offsets); |
| |
| for (uint32_t i = 0; i < num_matches; i++) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| if (die) |
| { |
| if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| if (!FunctionDieMatchesPartialName(die, |
| dwarf_cu, |
| effective_name_type_mask, |
| name_cstr, |
| base_name_start, |
| base_name_end)) |
| continue; |
| |
| // If we get to here, the die is good, and we should add it: |
| ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x for '%s')", |
| die_offset, name_cstr); |
| } |
| } |
| die_offsets.clear(); |
| } |
| } |
| } |
| } |
| else |
| { |
| |
| // Index the DWARF if we haven't already |
| if (!m_indexed) |
| Index (); |
| |
| if (name_type_mask & eFunctionNameTypeFull) |
| FindFunctions (name, m_function_fullname_index, sc_list); |
| |
| std::string base_name(base_name_start, base_name_end - base_name_start); |
| ConstString base_name_const(base_name.c_str()); |
| DIEArray die_offsets; |
| DWARFCompileUnit *dwarf_cu = NULL; |
| |
| if (effective_name_type_mask & eFunctionNameTypeBase) |
| { |
| uint32_t num_base = m_function_basename_index.Find(base_name_const, die_offsets); |
| for (uint32_t i = 0; i < num_base; i++) |
| { |
| const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); |
| if (die) |
| { |
| if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| if (!FunctionDieMatchesPartialName(die, |
| dwarf_cu, |
| effective_name_type_mask, |
| name_cstr, |
| base_name_start, |
| base_name_end)) |
| continue; |
| |
| // If we get to here, the die is good, and we should add it: |
| ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| } |
| die_offsets.clear(); |
| } |
| |
| if (effective_name_type_mask & eFunctionNameTypeMethod) |
| { |
| if (namespace_decl && *namespace_decl) |
| return 0; // no methods in namespaces |
| |
| uint32_t num_base = m_function_method_index.Find(base_name_const, die_offsets); |
| { |
| for (uint32_t i = 0; i < num_base; i++) |
| { |
| const DWARFDebugInfoEntry* die = info->GetDIEPtrWithCompileUnitHint (die_offsets[i], &dwarf_cu); |
| if (die) |
| { |
| if (!FunctionDieMatchesPartialName(die, |
| dwarf_cu, |
| effective_name_type_mask, |
| name_cstr, |
| base_name_start, |
| base_name_end)) |
| continue; |
| |
| // If we get to here, the die is good, and we should add it: |
| ResolveFunction (dwarf_cu, die, sc_list); |
| } |
| } |
| } |
| die_offsets.clear(); |
| } |
| |
| if ((effective_name_type_mask & eFunctionNameTypeSelector) && (!namespace_decl || !*namespace_decl)) |
| { |
| FindFunctions (name, m_function_selector_index, sc_list); |
| } |
| |
| } |
| |
| // Return the number of variable that were appended to the list |
| return sc_list.GetSize() - original_size; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::FindFunctions(const RegularExpression& regex, bool append, SymbolContextList& sc_list) |
| { |
| Timer scoped_timer (__PRETTY_FUNCTION__, |
| "SymbolFileDWARF::FindFunctions (regex = '%s')", |
| regex.GetText()); |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindFunctions (regex=\"%s\", append=%u, sc_list)", |
| regex.GetText(), |
| append); |
| } |
| |
| |
| // If we aren't appending the results to this list, then clear the list |
| if (!append) |
| sc_list.Clear(); |
| |
| // Remember how many sc_list are in the list before we search in case |
| // we are appending the results to a variable list. |
| uint32_t original_size = sc_list.GetSize(); |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_names_ap.get()) |
| FindFunctions (regex, *m_apple_names_ap, sc_list); |
| } |
| else |
| { |
| // Index the DWARF if we haven't already |
| if (!m_indexed) |
| Index (); |
| |
| FindFunctions (regex, m_function_basename_index, sc_list); |
| |
| FindFunctions (regex, m_function_fullname_index, sc_list); |
| } |
| |
| // Return the number of variable that were appended to the list |
| return sc_list.GetSize() - original_size; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::FindTypes (const SymbolContext& sc, |
| const ConstString &name, |
| const lldb_private::ClangNamespaceDecl *namespace_decl, |
| bool append, |
| uint32_t max_matches, |
| TypeList& types) |
| { |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info == NULL) |
| return 0; |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindTypes (sc, name=\"%s\", append=%u, max_matches=%u, type_list)", |
| name.GetCString(), |
| append, |
| max_matches); |
| } |
| |
| // If we aren't appending the results to this list, then clear the list |
| if (!append) |
| types.Clear(); |
| |
| if (!NamespaceDeclMatchesThisSymbolFile(namespace_decl)) |
| return 0; |
| |
| DIEArray die_offsets; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_types_ap.get()) |
| { |
| const char *name_cstr = name.GetCString(); |
| m_apple_types_ap->FindByName (name_cstr, die_offsets); |
| } |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| m_type_index.Find (name, die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| |
| if (num_matches) |
| { |
| const uint32_t initial_types_size = types.GetSize(); |
| DWARFCompileUnit* dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| |
| if (die) |
| { |
| if (namespace_decl && !DIEIsInNamespace (namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| Type *matching_type = ResolveType (dwarf_cu, die); |
| if (matching_type) |
| { |
| // We found a type pointer, now find the shared pointer form our type list |
| types.InsertUnique (matching_type->shared_from_this()); |
| if (types.GetSize() >= max_matches) |
| break; |
| } |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, name.GetCString()); |
| } |
| } |
| |
| } |
| return types.GetSize() - initial_types_size; |
| } |
| return 0; |
| } |
| |
| |
| ClangNamespaceDecl |
| SymbolFileDWARF::FindNamespace (const SymbolContext& sc, |
| const ConstString &name, |
| const lldb_private::ClangNamespaceDecl *parent_namespace_decl) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_LOOKUPS)); |
| |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")", |
| name.GetCString()); |
| } |
| |
| if (!NamespaceDeclMatchesThisSymbolFile(parent_namespace_decl)) |
| return ClangNamespaceDecl(); |
| |
| ClangNamespaceDecl namespace_decl; |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info) |
| { |
| DIEArray die_offsets; |
| |
| // Index if we already haven't to make sure the compile units |
| // get indexed and make their global DIE index list |
| if (m_using_apple_tables) |
| { |
| if (m_apple_namespaces_ap.get()) |
| { |
| const char *name_cstr = name.GetCString(); |
| m_apple_namespaces_ap->FindByName (name_cstr, die_offsets); |
| } |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| m_namespace_index.Find (name, die_offsets); |
| } |
| |
| DWARFCompileUnit* dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| const size_t num_matches = die_offsets.size(); |
| if (num_matches) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| |
| if (die) |
| { |
| if (parent_namespace_decl && !DIEIsInNamespace (parent_namespace_decl, dwarf_cu, die)) |
| continue; |
| |
| clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (dwarf_cu, die); |
| if (clang_namespace_decl) |
| { |
| namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); |
| namespace_decl.SetNamespaceDecl (clang_namespace_decl); |
| break; |
| } |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_namespaces accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, name.GetCString()); |
| } |
| } |
| |
| } |
| } |
| } |
| return namespace_decl; |
| } |
| |
| uint32_t |
| SymbolFileDWARF::FindTypes(std::vector<dw_offset_t> die_offsets, uint32_t max_matches, TypeList& types) |
| { |
| // Remember how many sc_list are in the list before we search in case |
| // we are appending the results to a variable list. |
| uint32_t original_size = types.GetSize(); |
| |
| const uint32_t num_die_offsets = die_offsets.size(); |
| // Parse all of the types we found from the pubtypes matches |
| uint32_t i; |
| uint32_t num_matches = 0; |
| for (i = 0; i < num_die_offsets; ++i) |
| { |
| Type *matching_type = ResolveTypeUID (die_offsets[i]); |
| if (matching_type) |
| { |
| // We found a type pointer, now find the shared pointer form our type list |
| types.InsertUnique (matching_type->shared_from_this()); |
| ++num_matches; |
| if (num_matches >= max_matches) |
| break; |
| } |
| } |
| |
| // Return the number of variable that were appended to the list |
| return types.GetSize() - original_size; |
| } |
| |
| |
| size_t |
| SymbolFileDWARF::ParseChildParameters (const SymbolContext& sc, |
| clang::DeclContext *containing_decl_ctx, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *parent_die, |
| bool skip_artificial, |
| bool &is_static, |
| TypeList* type_list, |
| std::vector<clang_type_t>& function_param_types, |
| std::vector<clang::ParmVarDecl*>& function_param_decls, |
| unsigned &type_quals) |
| { |
| if (parent_die == NULL) |
| return 0; |
| |
| const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); |
| |
| size_t arg_idx = 0; |
| const DWARFDebugInfoEntry *die; |
| for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) |
| { |
| dw_tag_t tag = die->Tag(); |
| switch (tag) |
| { |
| case DW_TAG_formal_parameter: |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); |
| if (num_attributes > 0) |
| { |
| const char *name = NULL; |
| Declaration decl; |
| dw_offset_t param_type_die_offset = DW_INVALID_OFFSET; |
| bool is_artificial = false; |
| // one of None, Auto, Register, Extern, Static, PrivateExtern |
| |
| clang::StorageClass storage = clang::SC_None; |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_type: param_type_die_offset = form_value.Reference(dwarf_cu); break; |
| case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; |
| case DW_AT_location: |
| // if (form_value.BlockData()) |
| // { |
| // const DataExtractor& debug_info_data = debug_info(); |
| // uint32_t block_length = form_value.Unsigned(); |
| // DataExtractor location(debug_info_data, form_value.BlockData() - debug_info_data.GetDataStart(), block_length); |
| // } |
| // else |
| // { |
| // } |
| // break; |
| case DW_AT_const_value: |
| case DW_AT_default_value: |
| case DW_AT_description: |
| case DW_AT_endianity: |
| case DW_AT_is_optional: |
| case DW_AT_segment: |
| case DW_AT_variable_parameter: |
| default: |
| case DW_AT_abstract_origin: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| bool skip = false; |
| if (skip_artificial) |
| { |
| if (is_artificial) |
| { |
| // In order to determine if a C++ member function is |
| // "const" we have to look at the const-ness of "this"... |
| // Ugly, but that |
| if (arg_idx == 0) |
| { |
| if (DeclKindIsCXXClass(containing_decl_ctx->getDeclKind())) |
| { |
| // Often times compilers omit the "this" name for the |
| // specification DIEs, so we can't rely upon the name |
| // being in the formal parameter DIE... |
| if (name == NULL || ::strcmp(name, "this")==0) |
| { |
| Type *this_type = ResolveTypeUID (param_type_die_offset); |
| if (this_type) |
| { |
| uint32_t encoding_mask = this_type->GetEncodingMask(); |
| if (encoding_mask & Type::eEncodingIsPointerUID) |
| { |
| is_static = false; |
| |
| if (encoding_mask & (1u << Type::eEncodingIsConstUID)) |
| type_quals |= clang::Qualifiers::Const; |
| if (encoding_mask & (1u << Type::eEncodingIsVolatileUID)) |
| type_quals |= clang::Qualifiers::Volatile; |
| } |
| } |
| } |
| } |
| } |
| skip = true; |
| } |
| else |
| { |
| |
| // HACK: Objective C formal parameters "self" and "_cmd" |
| // are not marked as artificial in the DWARF... |
| CompileUnit *curr_cu = GetCompUnitForDWARFCompUnit(dwarf_cu, UINT32_MAX); |
| if (curr_cu && (curr_cu->GetLanguage() == eLanguageTypeObjC || curr_cu->GetLanguage() == eLanguageTypeObjC_plus_plus)) |
| { |
| if (name && name[0] && (strcmp (name, "self") == 0 || strcmp (name, "_cmd") == 0)) |
| skip = true; |
| } |
| } |
| } |
| |
| if (!skip) |
| { |
| Type *type = ResolveTypeUID(param_type_die_offset); |
| if (type) |
| { |
| function_param_types.push_back (type->GetClangForwardType()); |
| |
| clang::ParmVarDecl *param_var_decl = GetClangASTContext().CreateParameterDeclaration (name, |
| type->GetClangForwardType(), |
| storage); |
| assert(param_var_decl); |
| function_param_decls.push_back(param_var_decl); |
| } |
| } |
| } |
| arg_idx++; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return arg_idx; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseChildEnumerators |
| ( |
| const SymbolContext& sc, |
| clang_type_t enumerator_clang_type, |
| uint32_t enumerator_byte_size, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *parent_die |
| ) |
| { |
| if (parent_die == NULL) |
| return 0; |
| |
| size_t enumerators_added = 0; |
| const DWARFDebugInfoEntry *die; |
| const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); |
| |
| for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) |
| { |
| const dw_tag_t tag = die->Tag(); |
| if (tag == DW_TAG_enumerator) |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); |
| if (num_child_attributes > 0) |
| { |
| const char *name = NULL; |
| bool got_value = false; |
| int64_t enum_value = 0; |
| Declaration decl; |
| |
| uint32_t i; |
| for (i=0; i<num_child_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_const_value: |
| got_value = true; |
| enum_value = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_name: |
| name = form_value.AsCString(&get_debug_str_data()); |
| break; |
| |
| case DW_AT_description: |
| default: |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| if (name && name[0] && got_value) |
| { |
| GetClangASTContext().AddEnumerationValueToEnumerationType (enumerator_clang_type, |
| enumerator_clang_type, |
| decl, |
| name, |
| enum_value, |
| enumerator_byte_size * 8); |
| ++enumerators_added; |
| } |
| } |
| } |
| } |
| return enumerators_added; |
| } |
| |
| void |
| SymbolFileDWARF::ParseChildArrayInfo |
| ( |
| const SymbolContext& sc, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *parent_die, |
| int64_t& first_index, |
| std::vector<uint64_t>& element_orders, |
| uint32_t& byte_stride, |
| uint32_t& bit_stride |
| ) |
| { |
| if (parent_die == NULL) |
| return; |
| |
| const DWARFDebugInfoEntry *die; |
| const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (dwarf_cu->GetAddressByteSize()); |
| for (die = parent_die->GetFirstChild(); die != NULL; die = die->GetSibling()) |
| { |
| const dw_tag_t tag = die->Tag(); |
| switch (tag) |
| { |
| case DW_TAG_enumerator: |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); |
| if (num_child_attributes > 0) |
| { |
| const char *name = NULL; |
| bool got_value = false; |
| int64_t enum_value = 0; |
| |
| uint32_t i; |
| for (i=0; i<num_child_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_const_value: |
| got_value = true; |
| enum_value = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_name: |
| name = form_value.AsCString(&get_debug_str_data()); |
| break; |
| |
| case DW_AT_description: |
| default: |
| case DW_AT_decl_file: |
| case DW_AT_decl_line: |
| case DW_AT_decl_column: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| } |
| } |
| break; |
| |
| case DW_TAG_subrange_type: |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_child_attributes = die->GetAttributes(this, dwarf_cu, fixed_form_sizes, attributes); |
| if (num_child_attributes > 0) |
| { |
| const char *name = NULL; |
| bool got_value = false; |
| uint64_t byte_size = 0; |
| int64_t enum_value = 0; |
| uint64_t num_elements = 0; |
| uint64_t lower_bound = 0; |
| uint64_t upper_bound = 0; |
| uint32_t i; |
| for (i=0; i<num_child_attributes; ++i) |
| { |
| const dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_const_value: |
| got_value = true; |
| enum_value = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_name: |
| name = form_value.AsCString(&get_debug_str_data()); |
| break; |
| |
| case DW_AT_count: |
| num_elements = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_bit_stride: |
| bit_stride = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_byte_stride: |
| byte_stride = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_byte_size: |
| byte_size = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_lower_bound: |
| lower_bound = form_value.Unsigned(); |
| break; |
| |
| case DW_AT_upper_bound: |
| upper_bound = form_value.Unsigned(); |
| break; |
| |
| default: |
| case DW_AT_abstract_origin: |
| case DW_AT_accessibility: |
| case DW_AT_allocated: |
| case DW_AT_associated: |
| case DW_AT_data_location: |
| case DW_AT_declaration: |
| case DW_AT_description: |
| case DW_AT_sibling: |
| case DW_AT_threads_scaled: |
| case DW_AT_type: |
| case DW_AT_visibility: |
| break; |
| } |
| } |
| } |
| |
| if (upper_bound > lower_bound) |
| num_elements = upper_bound - lower_bound + 1; |
| |
| if (num_elements > 0) |
| element_orders.push_back (num_elements); |
| } |
| } |
| break; |
| } |
| } |
| } |
| |
| TypeSP |
| SymbolFileDWARF::GetTypeForDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry* die) |
| { |
| TypeSP type_sp; |
| if (die != NULL) |
| { |
| assert(curr_cu != NULL); |
| Type *type_ptr = m_die_to_type.lookup (die); |
| if (type_ptr == NULL) |
| { |
| CompileUnit* lldb_cu = GetCompUnitForDWARFCompUnit(curr_cu); |
| assert (lldb_cu); |
| SymbolContext sc(lldb_cu); |
| type_sp = ParseType(sc, curr_cu, die, NULL); |
| } |
| else if (type_ptr != DIE_IS_BEING_PARSED) |
| { |
| // Grab the existing type from the master types lists |
| type_sp = type_ptr->shared_from_this(); |
| } |
| |
| } |
| return type_sp; |
| } |
| |
| clang::DeclContext * |
| SymbolFileDWARF::GetClangDeclContextContainingDIEOffset (dw_offset_t die_offset) |
| { |
| if (die_offset != DW_INVALID_OFFSET) |
| { |
| DWARFCompileUnitSP cu_sp; |
| const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); |
| return GetClangDeclContextContainingDIE (cu_sp.get(), die, NULL); |
| } |
| return NULL; |
| } |
| |
| clang::DeclContext * |
| SymbolFileDWARF::GetClangDeclContextForDIEOffset (const SymbolContext &sc, dw_offset_t die_offset) |
| { |
| if (die_offset != DW_INVALID_OFFSET) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| if (debug_info) |
| { |
| DWARFCompileUnitSP cu_sp; |
| const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(die_offset, &cu_sp); |
| if (die) |
| return GetClangDeclContextForDIE (sc, cu_sp.get(), die); |
| } |
| } |
| return NULL; |
| } |
| |
| clang::NamespaceDecl * |
| SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry *die) |
| { |
| if (die && die->Tag() == DW_TAG_namespace) |
| { |
| // See if we already parsed this namespace DIE and associated it with a |
| // uniqued namespace declaration |
| clang::NamespaceDecl *namespace_decl = static_cast<clang::NamespaceDecl *>(m_die_to_decl_ctx[die]); |
| if (namespace_decl) |
| return namespace_decl; |
| else |
| { |
| const char *namespace_name = die->GetAttributeValueAsString(this, curr_cu, DW_AT_name, NULL); |
| clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (curr_cu, die, NULL); |
| namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, containing_decl_ctx); |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| if (log) |
| { |
| if (namespace_name) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "ASTContext => %p: 0x%8.8llx: DW_TAG_namespace with DW_AT_name(\"%s\") => clang::NamespaceDecl *%p (original = %p)", |
| GetClangASTContext().getASTContext(), |
| MakeUserID(die->GetOffset()), |
| namespace_name, |
| namespace_decl, |
| namespace_decl->getOriginalNamespace()); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "ASTContext => %p: 0x%8.8llx: DW_TAG_namespace (anonymous) => clang::NamespaceDecl *%p (original = %p)", |
| GetClangASTContext().getASTContext(), |
| MakeUserID(die->GetOffset()), |
| namespace_decl, |
| namespace_decl->getOriginalNamespace()); |
| } |
| } |
| |
| if (namespace_decl) |
| LinkDeclContextToDIE((clang::DeclContext*)namespace_decl, die); |
| return namespace_decl; |
| } |
| } |
| return NULL; |
| } |
| |
| clang::DeclContext * |
| SymbolFileDWARF::GetClangDeclContextForDIE (const SymbolContext &sc, DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) |
| { |
| clang::DeclContext *clang_decl_ctx = GetCachedClangDeclContextForDIE (die); |
| if (clang_decl_ctx) |
| return clang_decl_ctx; |
| // If this DIE has a specification, or an abstract origin, then trace to those. |
| |
| dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); |
| if (die_offset != DW_INVALID_OFFSET) |
| return GetClangDeclContextForDIEOffset (sc, die_offset); |
| |
| die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); |
| if (die_offset != DW_INVALID_OFFSET) |
| return GetClangDeclContextForDIEOffset (sc, die_offset); |
| |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage(log.get(), "SymbolFileDWARF::GetClangDeclContextForDIE (die = 0x%8.8x) %s '%s'", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), die->GetName(this, cu)); |
| // This is the DIE we want. Parse it, then query our map. |
| bool assert_not_being_parsed = true; |
| ResolveTypeUID (cu, die, assert_not_being_parsed); |
| |
| clang_decl_ctx = GetCachedClangDeclContextForDIE (die); |
| |
| return clang_decl_ctx; |
| } |
| |
| clang::DeclContext * |
| SymbolFileDWARF::GetClangDeclContextContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die, const DWARFDebugInfoEntry **decl_ctx_die_copy) |
| { |
| if (m_clang_tu_decl == NULL) |
| m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); |
| |
| const DWARFDebugInfoEntry *decl_ctx_die = GetDeclContextDIEContainingDIE (cu, die); |
| |
| if (decl_ctx_die_copy) |
| *decl_ctx_die_copy = decl_ctx_die; |
| |
| if (decl_ctx_die) |
| { |
| |
| DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find (decl_ctx_die); |
| if (pos != m_die_to_decl_ctx.end()) |
| return pos->second; |
| |
| switch (decl_ctx_die->Tag()) |
| { |
| case DW_TAG_compile_unit: |
| return m_clang_tu_decl; |
| |
| case DW_TAG_namespace: |
| return ResolveNamespaceDIE (cu, decl_ctx_die); |
| break; |
| |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_class_type: |
| { |
| Type* type = ResolveType (cu, decl_ctx_die); |
| if (type) |
| { |
| clang::DeclContext *decl_ctx = ClangASTContext::GetDeclContextForType (type->GetClangForwardType ()); |
| if (decl_ctx) |
| { |
| LinkDeclContextToDIE (decl_ctx, decl_ctx_die); |
| if (decl_ctx) |
| return decl_ctx; |
| } |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return m_clang_tu_decl; |
| } |
| |
| |
| const DWARFDebugInfoEntry * |
| SymbolFileDWARF::GetDeclContextDIEContainingDIE (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die) |
| { |
| if (cu && die) |
| { |
| const DWARFDebugInfoEntry * const decl_die = die; |
| |
| while (die != NULL) |
| { |
| // If this is the original DIE that we are searching for a declaration |
| // for, then don't look in the cache as we don't want our own decl |
| // context to be our decl context... |
| if (decl_die != die) |
| { |
| switch (die->Tag()) |
| { |
| case DW_TAG_compile_unit: |
| case DW_TAG_namespace: |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_class_type: |
| return die; |
| |
| default: |
| break; |
| } |
| } |
| |
| dw_offset_t die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_specification, DW_INVALID_OFFSET); |
| if (die_offset != DW_INVALID_OFFSET) |
| { |
| DWARFCompileUnit *spec_cu = cu; |
| const DWARFDebugInfoEntry *spec_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &spec_cu); |
| const DWARFDebugInfoEntry *spec_die_decl_ctx_die = GetDeclContextDIEContainingDIE (spec_cu, spec_die); |
| if (spec_die_decl_ctx_die) |
| return spec_die_decl_ctx_die; |
| } |
| |
| die_offset = die->GetAttributeValueAsReference(this, cu, DW_AT_abstract_origin, DW_INVALID_OFFSET); |
| if (die_offset != DW_INVALID_OFFSET) |
| { |
| DWARFCompileUnit *abs_cu = cu; |
| const DWARFDebugInfoEntry *abs_die = DebugInfo()->GetDIEPtrWithCompileUnitHint (die_offset, &abs_cu); |
| const DWARFDebugInfoEntry *abs_die_decl_ctx_die = GetDeclContextDIEContainingDIE (abs_cu, abs_die); |
| if (abs_die_decl_ctx_die) |
| return abs_die_decl_ctx_die; |
| } |
| |
| die = die->GetParent(); |
| } |
| } |
| return NULL; |
| } |
| |
| |
| Symbol * |
| SymbolFileDWARF::GetObjCClassSymbol (const ConstString &objc_class_name) |
| { |
| Symbol *objc_class_symbol = NULL; |
| if (m_obj_file) |
| { |
| Symtab *symtab = m_obj_file->GetSymtab(); |
| if (symtab) |
| { |
| objc_class_symbol = symtab->FindFirstSymbolWithNameAndType (objc_class_name, |
| eSymbolTypeObjCClass, |
| Symtab::eDebugNo, |
| Symtab::eVisibilityAny); |
| } |
| } |
| return objc_class_symbol; |
| } |
| |
| // Some compilers don't emit the DW_AT_APPLE_objc_complete_type attribute. If they don't |
| // then we can end up looking through all class types for a complete type and never find |
| // the full definition. We need to know if this attribute is supported, so we determine |
| // this here and cache th result. We also need to worry about the debug map DWARF file |
| // if we are doing darwin DWARF in .o file debugging. |
| bool |
| SymbolFileDWARF::Supports_DW_AT_APPLE_objc_complete_type (DWARFCompileUnit *cu) |
| { |
| if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolCalculate) |
| { |
| m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolNo; |
| if (cu && cu->Supports_DW_AT_APPLE_objc_complete_type()) |
| m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; |
| else |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| const uint32_t num_compile_units = GetNumCompileUnits(); |
| for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) |
| { |
| DWARFCompileUnit* curr_cu = debug_info->GetCompileUnitAtIndex(cu_idx); |
| if (curr_cu != cu && curr_cu->Supports_DW_AT_APPLE_objc_complete_type()) |
| { |
| m_supports_DW_AT_APPLE_objc_complete_type = eLazyBoolYes; |
| break; |
| } |
| } |
| } |
| if (m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolNo && m_debug_map_symfile) |
| return m_debug_map_symfile->Supports_DW_AT_APPLE_objc_complete_type (this); |
| } |
| return m_supports_DW_AT_APPLE_objc_complete_type == eLazyBoolYes; |
| } |
| |
| // This function can be used when a DIE is found that is a forward declaration |
| // DIE and we want to try and find a type that has the complete definition. |
| TypeSP |
| SymbolFileDWARF::FindCompleteObjCDefinitionTypeForDIE (const DWARFDebugInfoEntry *die, |
| const ConstString &type_name, |
| bool must_be_implementation) |
| { |
| |
| TypeSP type_sp; |
| |
| if (!type_name || (must_be_implementation && !GetObjCClassSymbol (type_name))) |
| return type_sp; |
| |
| DIEArray die_offsets; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_types_ap.get()) |
| { |
| const char *name_cstr = type_name.GetCString(); |
| m_apple_types_ap->FindCompleteObjCClassByName (name_cstr, die_offsets, must_be_implementation); |
| } |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| m_type_index.Find (type_name, die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| |
| DWARFCompileUnit* type_cu = NULL; |
| const DWARFDebugInfoEntry* type_die = NULL; |
| if (num_matches) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); |
| |
| if (type_die) |
| { |
| bool try_resolving_type = false; |
| |
| // Don't try and resolve the DIE we are looking for with the DIE itself! |
| if (type_die != die) |
| { |
| switch (type_die->Tag()) |
| { |
| case DW_TAG_class_type: |
| case DW_TAG_structure_type: |
| try_resolving_type = true; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (try_resolving_type) |
| { |
| if (must_be_implementation && type_cu->Supports_DW_AT_APPLE_objc_complete_type()) |
| try_resolving_type = type_die->GetAttributeValueAsUnsigned (this, type_cu, DW_AT_APPLE_objc_complete_type, 0); |
| |
| if (try_resolving_type) |
| { |
| Type *resolved_type = ResolveType (type_cu, type_die, false); |
| if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) |
| { |
| DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n", |
| MakeUserID(die->GetOffset()), |
| MakeUserID(curr_cu->GetOffset()), |
| m_obj_file->GetFileSpec().GetFilename().AsCString(), |
| MakeUserID(type_die->GetOffset()), |
| MakeUserID(type_cu->GetOffset())); |
| |
| if (die) |
| m_die_to_type[die] = resolved_type; |
| type_sp = resolved_type->shared_from_this(); |
| break; |
| } |
| } |
| } |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, type_name.GetCString()); |
| } |
| } |
| |
| } |
| } |
| return type_sp; |
| } |
| |
| bool |
| SymbolFileDWARF::DIEDeclContextsMatch (DWARFCompileUnit* cu1, const DWARFDebugInfoEntry *die1, |
| DWARFCompileUnit* cu2, const DWARFDebugInfoEntry *die2) |
| { |
| assert (die1 != die2); |
| DWARFDIECollection decl_ctx_1; |
| DWARFDIECollection decl_ctx_2; |
| die1->GetDeclContextDIEs (this, cu1, decl_ctx_1); |
| die2->GetDeclContextDIEs (this, cu2, decl_ctx_2); |
| const size_t count1 = decl_ctx_1.Size(); |
| const size_t count2 = decl_ctx_2.Size(); |
| if (count1 != count2) |
| return false; |
| const DWARFDebugInfoEntry *decl_ctx_die1; |
| const DWARFDebugInfoEntry *decl_ctx_die2; |
| size_t i; |
| for (i=0; i<count1; i++) |
| { |
| decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); |
| decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); |
| if (decl_ctx_die1->Tag() != decl_ctx_die2->Tag()) |
| return false; |
| } |
| // Make sure the top item in the decl context die array is always a compile unit |
| #if defined LLDB_CONFIGURATION_DEBUG |
| assert (decl_ctx_1.GetDIEPtrAtIndex (count1 - 1)->Tag() == DW_TAG_compile_unit); |
| #endif |
| // Always skip the compile unit when comparing by only iterating up to |
| // "count1 - 1" |
| for (i=0; i<count1 - 1; i++) |
| { |
| decl_ctx_die1 = decl_ctx_1.GetDIEPtrAtIndex (i); |
| decl_ctx_die2 = decl_ctx_2.GetDIEPtrAtIndex (i); |
| const char *name1 = decl_ctx_die1->GetName(this, cu1); |
| const char *name2 = decl_ctx_die2->GetName(this, cu2); |
| // If the string was from a DW_FORM_strp, then the pointer will often |
| // be the same! |
| if (name1 != name2) |
| { |
| if (name1 && name2) |
| { |
| // If the strings don't compare, we are done... |
| if (strcmp(name1, name2) != 0) |
| return false; |
| } |
| else |
| { |
| // One name was NULL while the other wasn't |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| // This function can be used when a DIE is found that is a forward declaration |
| // DIE and we want to try and find a type that has the complete definition. |
| TypeSP |
| SymbolFileDWARF::FindDefinitionTypeForDIE (DWARFCompileUnit* cu, |
| const DWARFDebugInfoEntry *die, |
| const ConstString &type_name) |
| { |
| TypeSP type_sp; |
| |
| if (cu == NULL || die == NULL || !type_name) |
| return type_sp; |
| |
| DIEArray die_offsets; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_types_ap.get()) |
| { |
| if (m_apple_types_ap->GetHeader().header_data.atoms.size() > 1) |
| { |
| m_apple_types_ap->FindByNameAndTag (type_name.GetCString(), die->Tag(), die_offsets); |
| } |
| else |
| { |
| m_apple_types_ap->FindByName (type_name.GetCString(), die_offsets); |
| } |
| } |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| m_type_index.Find (type_name, die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| |
| const dw_tag_t die_tag = die->Tag(); |
| |
| DWARFCompileUnit* type_cu = NULL; |
| const DWARFDebugInfoEntry* type_die = NULL; |
| if (num_matches) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| type_die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &type_cu); |
| |
| if (type_die) |
| { |
| bool try_resolving_type = false; |
| |
| // Don't try and resolve the DIE we are looking for with the DIE itself! |
| if (type_die != die) |
| { |
| const dw_tag_t type_die_tag = type_die->Tag(); |
| // Make sure the tags match |
| if (type_die_tag == die_tag) |
| { |
| // The tags match, lets try resolving this type |
| try_resolving_type = true; |
| } |
| else |
| { |
| // The tags don't match, but we need to watch our for a |
| // forward declaration for a struct and ("struct foo") |
| // ends up being a class ("class foo { ... };") or |
| // vice versa. |
| switch (type_die_tag) |
| { |
| case DW_TAG_class_type: |
| // We had a "class foo", see if we ended up with a "struct foo { ... };" |
| try_resolving_type = (die_tag == DW_TAG_structure_type); |
| break; |
| case DW_TAG_structure_type: |
| // We had a "struct foo", see if we ended up with a "class foo { ... };" |
| try_resolving_type = (die_tag == DW_TAG_class_type); |
| break; |
| default: |
| // Tags don't match, don't event try to resolve |
| // using this type whose name matches.... |
| break; |
| } |
| } |
| } |
| |
| if (try_resolving_type) |
| { |
| // Make sure the decl contexts match all the way up |
| if (DIEDeclContextsMatch(cu, die, type_cu, type_die)) |
| { |
| Type *resolved_type = ResolveType (type_cu, type_die, false); |
| if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) |
| { |
| DEBUG_PRINTF ("resolved 0x%8.8llx (cu 0x%8.8llx) from %s to 0x%8.8llx (cu 0x%8.8llx)\n", |
| MakeUserID(die->GetOffset()), |
| MakeUserID(curr_cu->GetOffset()), |
| m_obj_file->GetFileSpec().GetFilename().AsCString(), |
| MakeUserID(type_die->GetOffset()), |
| MakeUserID(type_cu->GetOffset())); |
| |
| m_die_to_type[die] = resolved_type; |
| type_sp = resolved_type->shared_from_this(); |
| break; |
| } |
| } |
| } |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_types accelerator table had bad die 0x%8.8x for '%s')\n", |
| die_offset, type_name.GetCString()); |
| } |
| } |
| |
| } |
| } |
| return type_sp; |
| } |
| |
| TypeSP |
| SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *die, bool *type_is_new_ptr) |
| { |
| TypeSP type_sp; |
| |
| if (type_is_new_ptr) |
| *type_is_new_ptr = false; |
| |
| static int depth = -1; |
| |
| class DepthTaker { |
| public: |
| DepthTaker (int &depth) : m_depth(depth) { ++m_depth; } |
| ~DepthTaker () { --m_depth; } |
| int &m_depth; |
| } depth_taker(depth); |
| |
| AccessType accessibility = eAccessNone; |
| if (die != NULL) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| if (log) |
| { |
| const DWARFDebugInfoEntry *context_die; |
| clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die); |
| |
| std::string name_storage; |
| |
| const char* qual_name = die->GetQualifiedName(this, |
| dwarf_cu, |
| name_storage); |
| |
| GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (depth = %d, die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s '%s'='%s')", |
| depth, |
| die->GetOffset(), |
| context, |
| context_die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, dwarf_cu), |
| qual_name); |
| } |
| // |
| // LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| // if (log && dwarf_cu) |
| // { |
| // StreamString s; |
| // die->DumpLocation (this, dwarf_cu, s); |
| // GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDwarf::%s %s", __FUNCTION__, s.GetData()); |
| // |
| // } |
| |
| Type *type_ptr = m_die_to_type.lookup (die); |
| TypeList* type_list = GetTypeList(); |
| if (type_ptr == NULL) |
| { |
| ClangASTContext &ast = GetClangASTContext(); |
| if (type_is_new_ptr) |
| *type_is_new_ptr = true; |
| |
| const dw_tag_t tag = die->Tag(); |
| |
| bool is_forward_declaration = false; |
| DWARFDebugInfoEntry::Attributes attributes; |
| const char *type_name_cstr = NULL; |
| ConstString type_name_const_str; |
| Type::ResolveState resolve_state = Type::eResolveStateUnresolved; |
| size_t byte_size = 0; |
| bool byte_size_valid = false; |
| Declaration decl; |
| |
| Type::EncodingDataType encoding_data_type = Type::eEncodingIsUID; |
| clang_type_t clang_type = NULL; |
| |
| dw_attr_t attr; |
| |
| switch (tag) |
| { |
| case DW_TAG_base_type: |
| case DW_TAG_pointer_type: |
| case DW_TAG_reference_type: |
| case DW_TAG_typedef: |
| case DW_TAG_const_type: |
| case DW_TAG_restrict_type: |
| case DW_TAG_volatile_type: |
| case DW_TAG_unspecified_type: |
| { |
| // Set a bit that lets us know that we are currently parsing this |
| m_die_to_type[die] = DIE_IS_BEING_PARSED; |
| |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| uint32_t encoding = 0; |
| lldb::user_id_t encoding_uid = LLDB_INVALID_UID; |
| |
| if (num_attributes > 0) |
| { |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: |
| |
| type_name_cstr = form_value.AsCString(&get_debug_str_data()); |
| // Work around a bug in llvm-gcc where they give a name to a reference type which doesn't |
| // include the "&"... |
| if (tag == DW_TAG_reference_type) |
| { |
| if (strchr (type_name_cstr, '&') == NULL) |
| type_name_cstr = NULL; |
| } |
| if (type_name_cstr) |
| type_name_const_str.SetCString(type_name_cstr); |
| break; |
| case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; |
| case DW_AT_encoding: encoding = form_value.Unsigned(); break; |
| case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; |
| default: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| } |
| |
| DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\") type => 0x%8.8x\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); |
| |
| switch (tag) |
| { |
| default: |
| break; |
| |
| case DW_TAG_unspecified_type: |
| if (strcmp(type_name_cstr, "nullptr_t") == 0) |
| { |
| resolve_state = Type::eResolveStateFull; |
| clang_type = ast.getASTContext()->NullPtrTy.getAsOpaquePtr(); |
| break; |
| } |
| // Fall through to base type below in case we can handle the type there... |
| |
| case DW_TAG_base_type: |
| resolve_state = Type::eResolveStateFull; |
| clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (type_name_cstr, |
| encoding, |
| byte_size * 8); |
| break; |
| |
| case DW_TAG_pointer_type: encoding_data_type = Type::eEncodingIsPointerUID; break; |
| case DW_TAG_reference_type: encoding_data_type = Type::eEncodingIsLValueReferenceUID; break; |
| case DW_TAG_typedef: encoding_data_type = Type::eEncodingIsTypedefUID; break; |
| case DW_TAG_const_type: encoding_data_type = Type::eEncodingIsConstUID; break; |
| case DW_TAG_restrict_type: encoding_data_type = Type::eEncodingIsRestrictUID; break; |
| case DW_TAG_volatile_type: encoding_data_type = Type::eEncodingIsVolatileUID; break; |
| } |
| |
| if (clang_type == NULL && (encoding_data_type == Type::eEncodingIsPointerUID || encoding_data_type == Type::eEncodingIsTypedefUID)) |
| { |
| if (type_name_cstr != NULL && sc.comp_unit != NULL && |
| (sc.comp_unit->GetLanguage() == eLanguageTypeObjC || sc.comp_unit->GetLanguage() == eLanguageTypeObjC_plus_plus)) |
| { |
| static ConstString g_objc_type_name_id("id"); |
| static ConstString g_objc_type_name_Class("Class"); |
| static ConstString g_objc_type_name_selector("SEL"); |
| |
| if (type_name_const_str == g_objc_type_name_id) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'id' built-in type.", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, dwarf_cu)); |
| clang_type = ast.GetBuiltInType_objc_id(); |
| encoding_data_type = Type::eEncodingIsUID; |
| encoding_uid = LLDB_INVALID_UID; |
| resolve_state = Type::eResolveStateFull; |
| |
| } |
| else if (type_name_const_str == g_objc_type_name_Class) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'Class' built-in type.", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, dwarf_cu)); |
| clang_type = ast.GetBuiltInType_objc_Class(); |
| encoding_data_type = Type::eEncodingIsUID; |
| encoding_uid = LLDB_INVALID_UID; |
| resolve_state = Type::eResolveStateFull; |
| } |
| else if (type_name_const_str == g_objc_type_name_selector) |
| { |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' is Objective C 'selector' built-in type.", |
| die->GetOffset(), |
| DW_TAG_value_to_name(die->Tag()), |
| die->GetName(this, dwarf_cu)); |
| clang_type = ast.GetBuiltInType_objc_selector(); |
| encoding_data_type = Type::eEncodingIsUID; |
| encoding_uid = LLDB_INVALID_UID; |
| resolve_state = Type::eResolveStateFull; |
| } |
| } |
| } |
| |
| type_sp.reset( new Type (MakeUserID(die->GetOffset()), |
| this, |
| type_name_const_str, |
| byte_size, |
| NULL, |
| encoding_uid, |
| encoding_data_type, |
| &decl, |
| clang_type, |
| resolve_state)); |
| |
| m_die_to_type[die] = type_sp.get(); |
| |
| // Type* encoding_type = GetUniquedTypeForDIEOffset(encoding_uid, type_sp, NULL, 0, 0, false); |
| // if (encoding_type != NULL) |
| // { |
| // if (encoding_type != DIE_IS_BEING_PARSED) |
| // type_sp->SetEncodingType(encoding_type); |
| // else |
| // m_indirect_fixups.push_back(type_sp.get()); |
| // } |
| } |
| break; |
| |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_class_type: |
| { |
| // Set a bit that lets us know that we are currently parsing this |
| m_die_to_type[die] = DIE_IS_BEING_PARSED; |
| |
| LanguageType class_language = eLanguageTypeUnknown; |
| bool is_complete_objc_class = false; |
| //bool struct_is_class = false; |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| if (num_attributes > 0) |
| { |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: |
| if (dwarf_cu->DW_AT_decl_file_attributes_are_invalid()) |
| { |
| // llvm-gcc outputs invalid DW_AT_decl_file attributes that always |
| // point to the compile unit file, so we clear this invalid value |
| // so that we can still unique types efficiently. |
| decl.SetFile(FileSpec ("<invalid>", false)); |
| } |
| else |
| decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); |
| break; |
| |
| case DW_AT_decl_line: |
| decl.SetLine(form_value.Unsigned()); |
| break; |
| |
| case DW_AT_decl_column: |
| decl.SetColumn(form_value.Unsigned()); |
| break; |
| |
| case DW_AT_name: |
| type_name_cstr = form_value.AsCString(&get_debug_str_data()); |
| type_name_const_str.SetCString(type_name_cstr); |
| break; |
| |
| case DW_AT_byte_size: |
| byte_size = form_value.Unsigned(); |
| byte_size_valid = true; |
| break; |
| |
| case DW_AT_accessibility: |
| accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); |
| break; |
| |
| case DW_AT_declaration: |
| is_forward_declaration = form_value.Unsigned() != 0; |
| break; |
| |
| case DW_AT_APPLE_runtime_class: |
| class_language = (LanguageType)form_value.Signed(); |
| break; |
| |
| case DW_AT_APPLE_objc_complete_type: |
| is_complete_objc_class = form_value.Signed(); |
| break; |
| |
| case DW_AT_allocated: |
| case DW_AT_associated: |
| case DW_AT_data_location: |
| case DW_AT_description: |
| case DW_AT_start_scope: |
| case DW_AT_visibility: |
| default: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| } |
| |
| UniqueDWARFASTType unique_ast_entry; |
| if (decl.IsValid()) |
| { |
| if (GetUniqueDWARFASTTypeMap().Find (type_name_const_str, |
| this, |
| dwarf_cu, |
| die, |
| decl, |
| byte_size_valid ? byte_size : -1, |
| unique_ast_entry)) |
| { |
| // We have already parsed this type or from another |
| // compile unit. GCC loves to use the "one definition |
| // rule" which can result in multiple definitions |
| // of the same class over and over in each compile |
| // unit. |
| type_sp = unique_ast_entry.m_type_sp; |
| if (type_sp) |
| { |
| m_die_to_type[die] = type_sp.get(); |
| return type_sp; |
| } |
| } |
| } |
| |
| DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); |
| |
| int tag_decl_kind = -1; |
| AccessType default_accessibility = eAccessNone; |
| if (tag == DW_TAG_structure_type) |
| { |
| tag_decl_kind = clang::TTK_Struct; |
| default_accessibility = eAccessPublic; |
| } |
| else if (tag == DW_TAG_union_type) |
| { |
| tag_decl_kind = clang::TTK_Union; |
| default_accessibility = eAccessPublic; |
| } |
| else if (tag == DW_TAG_class_type) |
| { |
| tag_decl_kind = clang::TTK_Class; |
| default_accessibility = eAccessPrivate; |
| } |
| |
| if (byte_size_valid && byte_size == 0 && type_name_cstr && |
| die->HasChildren() == false && |
| sc.comp_unit->GetLanguage() == eLanguageTypeObjC) |
| { |
| // Work around an issue with clang at the moment where |
| // forward declarations for objective C classes are emitted |
| // as: |
| // DW_TAG_structure_type [2] |
| // DW_AT_name( "ForwardObjcClass" ) |
| // DW_AT_byte_size( 0x00 ) |
| // DW_AT_decl_file( "..." ) |
| // DW_AT_decl_line( 1 ) |
| // |
| // Note that there is no DW_AT_declaration and there are |
| // no children, and the byte size is zero. |
| is_forward_declaration = true; |
| } |
| |
| if (class_language == eLanguageTypeObjC) |
| { |
| if (!is_complete_objc_class && Supports_DW_AT_APPLE_objc_complete_type(dwarf_cu)) |
| { |
| // We have a valid eSymbolTypeObjCClass class symbol whose |
| // name matches the current objective C class that we |
| // are trying to find and this DIE isn't the complete |
| // definition (we checked is_complete_objc_class above and |
| // know it is false), so the real definition is in here somewhere |
| type_sp = FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); |
| |
| if (!type_sp && m_debug_map_symfile) |
| { |
| // We weren't able to find a full declaration in |
| // this DWARF, see if we have a declaration anywhere |
| // else... |
| type_sp = m_debug_map_symfile->FindCompleteObjCDefinitionTypeForDIE (die, type_name_const_str, true); |
| } |
| |
| if (type_sp) |
| { |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an incomplete objc type, complete type is 0x%8.8llx", |
| this, |
| die->GetOffset(), |
| DW_TAG_value_to_name(tag), |
| type_name_cstr, |
| type_sp->GetID()); |
| } |
| |
| // We found a real definition for this type elsewhere |
| // so lets use it and cache the fact that we found |
| // a complete type for this die |
| m_die_to_type[die] = type_sp.get(); |
| return type_sp; |
| } |
| } |
| } |
| |
| |
| if (is_forward_declaration) |
| { |
| // We have a forward declaration to a type and we need |
| // to try and find a full declaration. We look in the |
| // current type index just in case we have a forward |
| // declaration followed by an actual declarations in the |
| // DWARF. If this fails, we need to look elsewhere... |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, trying to find complete type", |
| this, |
| die->GetOffset(), |
| DW_TAG_value_to_name(tag), |
| type_name_cstr); |
| } |
| |
| type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); |
| |
| if (!type_sp && m_debug_map_symfile) |
| { |
| // We weren't able to find a full declaration in |
| // this DWARF, see if we have a declaration anywhere |
| // else... |
| type_sp = m_debug_map_symfile->FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); |
| } |
| |
| if (type_sp) |
| { |
| if (log) |
| { |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a forward declaration, complete type is 0x%8.8llx", |
| this, |
| die->GetOffset(), |
| DW_TAG_value_to_name(tag), |
| type_name_cstr, |
| type_sp->GetID()); |
| } |
| |
| // We found a real definition for this type elsewhere |
| // so lets use it and cache the fact that we found |
| // a complete type for this die |
| m_die_to_type[die] = type_sp.get(); |
| return type_sp; |
| } |
| } |
| assert (tag_decl_kind != -1); |
| bool clang_type_was_created = false; |
| clang_type = m_forward_decl_die_to_clang_type.lookup (die); |
| if (clang_type == NULL) |
| { |
| clang::DeclContext *decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, NULL); |
| if (accessibility == eAccessNone && decl_ctx) |
| { |
| // Check the decl context that contains this class/struct/union. |
| // If it is a class we must give it an accessability. |
| const clang::Decl::Kind containing_decl_kind = decl_ctx->getDeclKind(); |
| if (DeclKindIsCXXClass (containing_decl_kind)) |
| accessibility = default_accessibility; |
| } |
| |
| if (type_name_cstr && strchr (type_name_cstr, '<')) |
| { |
| ClangASTContext::TemplateParameterInfos template_param_infos; |
| if (ParseTemplateParameterInfos (dwarf_cu, die, template_param_infos)) |
| { |
| clang::ClassTemplateDecl *class_template_decl = ParseClassTemplateDecl (decl_ctx, |
| accessibility, |
| type_name_cstr, |
| tag_decl_kind, |
| template_param_infos); |
| |
| clang::ClassTemplateSpecializationDecl *class_specialization_decl = ast.CreateClassTemplateSpecializationDecl (decl_ctx, |
| class_template_decl, |
| tag_decl_kind, |
| template_param_infos); |
| clang_type = ast.CreateClassTemplateSpecializationType (class_specialization_decl); |
| clang_type_was_created = true; |
| } |
| } |
| |
| if (!clang_type_was_created) |
| { |
| clang_type_was_created = true; |
| clang_type = ast.CreateRecordType (decl_ctx, |
| accessibility, |
| type_name_cstr, |
| tag_decl_kind, |
| class_language); |
| } |
| } |
| |
| // Store a forward declaration to this class type in case any |
| // parameters in any class methods need it for the clang |
| // types for function prototypes. |
| LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); |
| type_sp.reset (new Type (MakeUserID(die->GetOffset()), |
| this, |
| type_name_const_str, |
| byte_size, |
| NULL, |
| LLDB_INVALID_UID, |
| Type::eEncodingIsUID, |
| &decl, |
| clang_type, |
| Type::eResolveStateForward)); |
| |
| |
| // Add our type to the unique type map so we don't |
| // end up creating many copies of the same type over |
| // and over in the ASTContext for our module |
| unique_ast_entry.m_type_sp = type_sp; |
| unique_ast_entry.m_symfile = this; |
| unique_ast_entry.m_cu = dwarf_cu; |
| unique_ast_entry.m_die = die; |
| unique_ast_entry.m_declaration = decl; |
| GetUniqueDWARFASTTypeMap().Insert (type_name_const_str, |
| unique_ast_entry); |
| |
| if (!is_forward_declaration) |
| { |
| if (die->HasChildren() == false) |
| { |
| // No children for this struct/union/class, lets finish it |
| ast.StartTagDeclarationDefinition (clang_type); |
| ast.CompleteTagDeclarationDefinition (clang_type); |
| } |
| else if (clang_type_was_created) |
| { |
| // Leave this as a forward declaration until we need |
| // to know the details of the type. lldb_private::Type |
| // will automatically call the SymbolFile virtual function |
| // "SymbolFileDWARF::ResolveClangOpaqueTypeDefinition(Type *)" |
| // When the definition needs to be defined. |
| m_forward_decl_die_to_clang_type[die] = clang_type; |
| m_forward_decl_clang_type_to_die[ClangASTType::RemoveFastQualifiers (clang_type)] = die; |
| ClangASTContext::SetHasExternalStorage (clang_type, true); |
| } |
| } |
| |
| } |
| break; |
| |
| case DW_TAG_enumeration_type: |
| { |
| // Set a bit that lets us know that we are currently parsing this |
| m_die_to_type[die] = DIE_IS_BEING_PARSED; |
| |
| lldb::user_id_t encoding_uid = DW_INVALID_OFFSET; |
| |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| if (num_attributes > 0) |
| { |
| uint32_t i; |
| |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: |
| type_name_cstr = form_value.AsCString(&get_debug_str_data()); |
| type_name_const_str.SetCString(type_name_cstr); |
| break; |
| case DW_AT_type: encoding_uid = form_value.Reference(dwarf_cu); break; |
| case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; |
| case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; |
| case DW_AT_allocated: |
| case DW_AT_associated: |
| case DW_AT_bit_stride: |
| case DW_AT_byte_stride: |
| case DW_AT_data_location: |
| case DW_AT_description: |
| case DW_AT_start_scope: |
| case DW_AT_visibility: |
| case DW_AT_specification: |
| case DW_AT_abstract_origin: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); |
| |
| clang_type_t enumerator_clang_type = NULL; |
| clang_type = m_forward_decl_die_to_clang_type.lookup (die); |
| if (clang_type == NULL) |
| { |
| enumerator_clang_type = ast.GetBuiltinTypeForDWARFEncodingAndBitSize (NULL, |
| DW_ATE_signed, |
| byte_size * 8); |
| clang_type = ast.CreateEnumerationType (type_name_cstr, |
| GetClangDeclContextContainingDIE (dwarf_cu, die, NULL), |
| decl, |
| enumerator_clang_type); |
| } |
| else |
| { |
| enumerator_clang_type = ClangASTContext::GetEnumerationIntegerType (clang_type); |
| assert (enumerator_clang_type != NULL); |
| } |
| |
| LinkDeclContextToDIE(ClangASTContext::GetDeclContextForType(clang_type), die); |
| |
| type_sp.reset( new Type (MakeUserID(die->GetOffset()), |
| this, |
| type_name_const_str, |
| byte_size, |
| NULL, |
| encoding_uid, |
| Type::eEncodingIsUID, |
| &decl, |
| clang_type, |
| Type::eResolveStateForward)); |
| |
| ast.StartTagDeclarationDefinition (clang_type); |
| if (die->HasChildren()) |
| { |
| SymbolContext cu_sc(GetCompUnitForDWARFCompUnit(dwarf_cu)); |
| ParseChildEnumerators(cu_sc, clang_type, type_sp->GetByteSize(), dwarf_cu, die); |
| } |
| ast.CompleteTagDeclarationDefinition (clang_type); |
| } |
| } |
| break; |
| |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_subprogram: |
| case DW_TAG_subroutine_type: |
| { |
| // Set a bit that lets us know that we are currently parsing this |
| m_die_to_type[die] = DIE_IS_BEING_PARSED; |
| |
| const char *mangled = NULL; |
| dw_offset_t type_die_offset = DW_INVALID_OFFSET; |
| bool is_variadic = false; |
| bool is_inline = false; |
| bool is_static = false; |
| bool is_virtual = false; |
| bool is_explicit = false; |
| bool is_artificial = false; |
| dw_offset_t specification_die_offset = DW_INVALID_OFFSET; |
| dw_offset_t abstract_origin_die_offset = DW_INVALID_OFFSET; |
| |
| unsigned type_quals = 0; |
| clang::StorageClass storage = clang::SC_None;//, Extern, Static, PrivateExtern |
| |
| |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| if (num_attributes > 0) |
| { |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: |
| type_name_cstr = form_value.AsCString(&get_debug_str_data()); |
| type_name_const_str.SetCString(type_name_cstr); |
| break; |
| |
| case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; |
| case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; |
| case DW_AT_inline: is_inline = form_value.Unsigned() != 0; break; |
| case DW_AT_virtuality: is_virtual = form_value.Unsigned() != 0; break; |
| case DW_AT_explicit: is_explicit = form_value.Unsigned() != 0; break; |
| case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; |
| |
| |
| case DW_AT_external: |
| if (form_value.Unsigned()) |
| { |
| if (storage == clang::SC_None) |
| storage = clang::SC_Extern; |
| else |
| storage = clang::SC_PrivateExtern; |
| } |
| break; |
| |
| case DW_AT_specification: |
| specification_die_offset = form_value.Reference(dwarf_cu); |
| break; |
| |
| case DW_AT_abstract_origin: |
| abstract_origin_die_offset = form_value.Reference(dwarf_cu); |
| break; |
| |
| case DW_AT_allocated: |
| case DW_AT_associated: |
| case DW_AT_address_class: |
| case DW_AT_calling_convention: |
| case DW_AT_data_location: |
| case DW_AT_elemental: |
| case DW_AT_entry_pc: |
| case DW_AT_frame_base: |
| case DW_AT_high_pc: |
| case DW_AT_low_pc: |
| case DW_AT_object_pointer: |
| case DW_AT_prototyped: |
| case DW_AT_pure: |
| case DW_AT_ranges: |
| case DW_AT_recursive: |
| case DW_AT_return_addr: |
| case DW_AT_segment: |
| case DW_AT_start_scope: |
| case DW_AT_static_link: |
| case DW_AT_trampoline: |
| case DW_AT_visibility: |
| case DW_AT_vtable_elem_location: |
| case DW_AT_description: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| } |
| |
| DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); |
| |
| clang_type_t return_clang_type = NULL; |
| Type *func_type = NULL; |
| |
| if (type_die_offset != DW_INVALID_OFFSET) |
| func_type = ResolveTypeUID(type_die_offset); |
| |
| if (func_type) |
| return_clang_type = func_type->GetClangForwardType(); |
| else |
| return_clang_type = ast.GetBuiltInType_void(); |
| |
| |
| std::vector<clang_type_t> function_param_types; |
| std::vector<clang::ParmVarDecl*> function_param_decls; |
| |
| // Parse the function children for the parameters |
| |
| const DWARFDebugInfoEntry *decl_ctx_die = NULL; |
| clang::DeclContext *containing_decl_ctx = GetClangDeclContextContainingDIE (dwarf_cu, die, &decl_ctx_die); |
| const clang::Decl::Kind containing_decl_kind = containing_decl_ctx->getDeclKind(); |
| |
| const bool is_cxx_method = DeclKindIsCXXClass (containing_decl_kind); |
| // Start off static. This will be set to false in ParseChildParameters(...) |
| // if we find a "this" paramters as the first parameter |
| if (is_cxx_method) |
| is_static = true; |
| |
| if (die->HasChildren()) |
| { |
| bool skip_artificial = true; |
| ParseChildParameters (sc, |
| containing_decl_ctx, |
| dwarf_cu, |
| die, |
| skip_artificial, |
| is_static, |
| type_list, |
| function_param_types, |
| function_param_decls, |
| type_quals); |
| } |
| |
| // clang_type will get the function prototype clang type after this call |
| clang_type = ast.CreateFunctionType (return_clang_type, |
| &function_param_types[0], |
| function_param_types.size(), |
| is_variadic, |
| type_quals); |
| |
| if (type_name_cstr) |
| { |
| if (die->GetOffset() == 0xaeaba) |
| fprintf(stderr, "This is the one!"); |
| |
| bool type_handled = false; |
| if (tag == DW_TAG_subprogram) |
| { |
| ConstString class_name; |
| ConstString class_name_no_category; |
| if (ObjCLanguageRuntime::ParseMethodName (type_name_cstr, &class_name, NULL, NULL, &class_name_no_category)) |
| { |
| // Use the class name with no category if there is one |
| if (class_name_no_category) |
| class_name = class_name_no_category; |
| |
| SymbolContext empty_sc; |
| clang_type_t class_opaque_type = NULL; |
| if (class_name) |
| { |
| TypeList types; |
| TypeSP complete_objc_class_type_sp (FindCompleteObjCDefinitionTypeForDIE (NULL, class_name, false)); |
| |
| if (complete_objc_class_type_sp) |
| { |
| clang_type_t type_clang_forward_type = complete_objc_class_type_sp->GetClangForwardType(); |
| if (ClangASTContext::IsObjCClassType (type_clang_forward_type)) |
| class_opaque_type = type_clang_forward_type; |
| } |
| } |
| |
| if (class_opaque_type) |
| { |
| // If accessibility isn't set to anything valid, assume public for |
| // now... |
| if (accessibility == eAccessNone) |
| accessibility = eAccessPublic; |
| |
| clang::ObjCMethodDecl *objc_method_decl; |
| objc_method_decl = ast.AddMethodToObjCObjectType (class_opaque_type, |
| type_name_cstr, |
| clang_type, |
| accessibility); |
| LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(objc_method_decl), die); |
| type_handled = objc_method_decl != NULL; |
| } |
| } |
| else if (is_cxx_method) |
| { |
| // Look at the parent of this DIE and see if is is |
| // a class or struct and see if this is actually a |
| // C++ method |
| Type *class_type = ResolveType (dwarf_cu, decl_ctx_die); |
| if (class_type) |
| { |
| if (specification_die_offset != DW_INVALID_OFFSET) |
| { |
| // We have a specification which we are going to base our function |
| // prototype off of, so we need this type to be completed so that the |
| // m_die_to_decl_ctx for the method in the specification has a valid |
| // clang decl context. |
| class_type->GetClangForwardType(); |
| // If we have a specification, then the function type should have been |
| // made with the specification and not with this die. |
| DWARFCompileUnitSP spec_cu_sp; |
| const DWARFDebugInfoEntry* spec_die = DebugInfo()->GetDIEPtr(specification_die_offset, &spec_cu_sp); |
| clang::DeclContext *spec_clang_decl_ctx = GetCachedClangDeclContextForDIE (spec_die); |
| if (spec_clang_decl_ctx) |
| { |
| LinkDeclContextToDIE(spec_clang_decl_ctx, die); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportWarning ("0x%8.8llx: DW_AT_specification(0x%8.8x) has no decl\n", |
| MakeUserID(die->GetOffset()), |
| specification_die_offset); |
| } |
| type_handled = true; |
| } |
| else if (abstract_origin_die_offset != DW_INVALID_OFFSET) |
| { |
| // We have a specification which we are going to base our function |
| // prototype off of, so we need this type to be completed so that the |
| // m_die_to_decl_ctx for the method in the abstract origin has a valid |
| // clang decl context. |
| class_type->GetClangForwardType(); |
| |
| DWARFCompileUnitSP abs_cu_sp; |
| const DWARFDebugInfoEntry* abs_die = DebugInfo()->GetDIEPtr(abstract_origin_die_offset, &abs_cu_sp); |
| clang::DeclContext *abs_clang_decl_ctx = GetCachedClangDeclContextForDIE (abs_die); |
| if (abs_clang_decl_ctx) |
| { |
| LinkDeclContextToDIE (abs_clang_decl_ctx, die); |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportWarning ("0x%8.8llx: DW_AT_abstract_origin(0x%8.8x) has no decl\n", |
| MakeUserID(die->GetOffset()), |
| abstract_origin_die_offset); |
| } |
| type_handled = true; |
| } |
| else |
| { |
| clang_type_t class_opaque_type = class_type->GetClangForwardType(); |
| if (ClangASTContext::IsCXXClassType (class_opaque_type)) |
| { |
| if (ClangASTContext::IsBeingDefined (class_opaque_type)) |
| { |
| // Neither GCC 4.2 nor clang++ currently set a valid accessibility |
| // in the DWARF for C++ methods... Default to public for now... |
| if (accessibility == eAccessNone) |
| accessibility = eAccessPublic; |
| |
| if (!is_static && !die->HasChildren()) |
| { |
| // We have a C++ member function with no children (this pointer!) |
| // and clang will get mad if we try and make a function that isn't |
| // well formed in the DWARF, so we will just skip it... |
| type_handled = true; |
| } |
| else |
| { |
| clang::CXXMethodDecl *cxx_method_decl; |
| // REMOVE THE CRASH DESCRIPTION BELOW |
| Host::SetCrashDescriptionWithFormat ("SymbolFileDWARF::ParseType() is adding a method %s to class %s in DIE 0x%8.8llx from %s/%s", |
| type_name_cstr, |
| class_type->GetName().GetCString(), |
| MakeUserID(die->GetOffset()), |
| m_obj_file->GetFileSpec().GetDirectory().GetCString(), |
| m_obj_file->GetFileSpec().GetFilename().GetCString()); |
| |
| const bool is_attr_used = false; |
| |
| cxx_method_decl = ast.AddMethodToCXXRecordType (class_opaque_type, |
| type_name_cstr, |
| clang_type, |
| accessibility, |
| is_virtual, |
| is_static, |
| is_inline, |
| is_explicit, |
| is_attr_used, |
| is_artificial); |
| LinkDeclContextToDIE(ClangASTContext::GetAsDeclContext(cxx_method_decl), die); |
| |
| Host::SetCrashDescription (NULL); |
| |
| type_handled = cxx_method_decl != NULL; |
| } |
| } |
| else |
| { |
| // We were asked to parse the type for a method in a class, yet the |
| // class hasn't been asked to complete itself through the |
| // clang::ExternalASTSource protocol, so we need to just have the |
| // class complete itself and do things the right way, then our |
| // DIE should then have an entry in the m_die_to_type map. First |
| // we need to modify the m_die_to_type so it doesn't think we are |
| // trying to parse this DIE anymore... |
| m_die_to_type[die] = NULL; |
| |
| // Now we get the full type to force our class type to complete itself |
| // using the clang::ExternalASTSource protocol which will parse all |
| // base classes and all methods (including the method for this DIE). |
| class_type->GetClangFullType(); |
| |
| // The type for this DIE should have been filled in the function call above |
| type_ptr = m_die_to_type[die]; |
| if (type_ptr) |
| { |
| type_sp = type_ptr->shared_from_this(); |
| break; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| if (!type_handled) |
| { |
| // We just have a function that isn't part of a class |
| clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (containing_decl_ctx, |
| type_name_cstr, |
| clang_type, |
| storage, |
| is_inline); |
| |
| // Add the decl to our DIE to decl context map |
| assert (function_decl); |
| LinkDeclContextToDIE(function_decl, die); |
| if (!function_param_decls.empty()) |
| ast.SetFunctionParameters (function_decl, |
| &function_param_decls.front(), |
| function_param_decls.size()); |
| } |
| } |
| type_sp.reset( new Type (MakeUserID(die->GetOffset()), |
| this, |
| type_name_const_str, |
| 0, |
| NULL, |
| LLDB_INVALID_UID, |
| Type::eEncodingIsUID, |
| &decl, |
| clang_type, |
| Type::eResolveStateFull)); |
| assert(type_sp.get()); |
| } |
| break; |
| |
| case DW_TAG_array_type: |
| { |
| // Set a bit that lets us know that we are currently parsing this |
| m_die_to_type[die] = DIE_IS_BEING_PARSED; |
| |
| lldb::user_id_t type_die_offset = DW_INVALID_OFFSET; |
| int64_t first_index = 0; |
| uint32_t byte_stride = 0; |
| uint32_t bit_stride = 0; |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| |
| if (num_attributes > 0) |
| { |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: |
| type_name_cstr = form_value.AsCString(&get_debug_str_data()); |
| type_name_const_str.SetCString(type_name_cstr); |
| break; |
| |
| case DW_AT_type: type_die_offset = form_value.Reference(dwarf_cu); break; |
| case DW_AT_byte_size: byte_size = form_value.Unsigned(); byte_size_valid = true; break; |
| case DW_AT_byte_stride: byte_stride = form_value.Unsigned(); break; |
| case DW_AT_bit_stride: bit_stride = form_value.Unsigned(); break; |
| case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| case DW_AT_declaration: is_forward_declaration = form_value.Unsigned() != 0; break; |
| case DW_AT_allocated: |
| case DW_AT_associated: |
| case DW_AT_data_location: |
| case DW_AT_description: |
| case DW_AT_ordering: |
| case DW_AT_start_scope: |
| case DW_AT_visibility: |
| case DW_AT_specification: |
| case DW_AT_abstract_origin: |
| case DW_AT_sibling: |
| break; |
| } |
| } |
| } |
| |
| DEBUG_PRINTF ("0x%8.8llx: %s (\"%s\")\n", MakeUserID(die->GetOffset()), DW_TAG_value_to_name(tag), type_name_cstr); |
| |
| Type *element_type = ResolveTypeUID(type_die_offset); |
| |
| if (element_type) |
| { |
| std::vector<uint64_t> element_orders; |
| ParseChildArrayInfo(sc, dwarf_cu, die, first_index, element_orders, byte_stride, bit_stride); |
| // We have an array that claims to have no members, lets give it at least one member... |
| if (element_orders.empty()) |
| element_orders.push_back (1); |
| if (byte_stride == 0 && bit_stride == 0) |
| byte_stride = element_type->GetByteSize(); |
| clang_type_t array_element_type = element_type->GetClangForwardType(); |
| uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; |
| uint64_t num_elements = 0; |
| std::vector<uint64_t>::const_reverse_iterator pos; |
| std::vector<uint64_t>::const_reverse_iterator end = element_orders.rend(); |
| for (pos = element_orders.rbegin(); pos != end; ++pos) |
| { |
| num_elements = *pos; |
| clang_type = ast.CreateArrayType (array_element_type, |
| num_elements, |
| num_elements * array_element_bit_stride); |
| array_element_type = clang_type; |
| array_element_bit_stride = array_element_bit_stride * num_elements; |
| } |
| ConstString empty_name; |
| type_sp.reset( new Type (MakeUserID(die->GetOffset()), |
| this, |
| empty_name, |
| array_element_bit_stride / 8, |
| NULL, |
| type_die_offset, |
| Type::eEncodingIsUID, |
| &decl, |
| clang_type, |
| Type::eResolveStateFull)); |
| type_sp->SetEncodingType (element_type); |
| } |
| } |
| } |
| break; |
| |
| case DW_TAG_ptr_to_member_type: |
| { |
| dw_offset_t type_die_offset = DW_INVALID_OFFSET; |
| dw_offset_t containing_type_die_offset = DW_INVALID_OFFSET; |
| |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| |
| if (num_attributes > 0) { |
| uint32_t i; |
| for (i=0; i<num_attributes; ++i) |
| { |
| attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_type: |
| type_die_offset = form_value.Reference(dwarf_cu); break; |
| case DW_AT_containing_type: |
| containing_type_die_offset = form_value.Reference(dwarf_cu); break; |
| } |
| } |
| } |
| |
| Type *pointee_type = ResolveTypeUID(type_die_offset); |
| Type *class_type = ResolveTypeUID(containing_type_die_offset); |
| |
| clang_type_t pointee_clang_type = pointee_type->GetClangForwardType(); |
| clang_type_t class_clang_type = class_type->GetClangLayoutType(); |
| |
| clang_type = ast.CreateMemberPointerType(pointee_clang_type, |
| class_clang_type); |
| |
| byte_size = ClangASTType::GetClangTypeBitWidth (ast.getASTContext(), |
| clang_type) / 8; |
| |
| type_sp.reset( new Type (MakeUserID(die->GetOffset()), |
| this, |
| type_name_const_str, |
| byte_size, |
| NULL, |
| LLDB_INVALID_UID, |
| Type::eEncodingIsUID, |
| NULL, |
| clang_type, |
| Type::eResolveStateForward)); |
| } |
| |
| break; |
| } |
| default: |
| assert(false && "Unhandled type tag!"); |
| break; |
| } |
| |
| if (type_sp.get()) |
| { |
| const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); |
| dw_tag_t sc_parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; |
| |
| SymbolContextScope * symbol_context_scope = NULL; |
| if (sc_parent_tag == DW_TAG_compile_unit) |
| { |
| symbol_context_scope = sc.comp_unit; |
| } |
| else if (sc.function != NULL) |
| { |
| symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); |
| if (symbol_context_scope == NULL) |
| symbol_context_scope = sc.function; |
| } |
| |
| if (symbol_context_scope != NULL) |
| { |
| type_sp->SetSymbolContextScope(symbol_context_scope); |
| } |
| |
| // We are ready to put this type into the uniqued list up at the module level |
| type_list->Insert (type_sp); |
| |
| m_die_to_type[die] = type_sp.get(); |
| } |
| } |
| else if (type_ptr != DIE_IS_BEING_PARSED) |
| { |
| type_sp = type_ptr->shared_from_this(); |
| } |
| } |
| return type_sp; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseTypes |
| ( |
| const SymbolContext& sc, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *die, |
| bool parse_siblings, |
| bool parse_children |
| ) |
| { |
| size_t types_added = 0; |
| while (die != NULL) |
| { |
| bool type_is_new = false; |
| if (ParseType(sc, dwarf_cu, die, &type_is_new).get()) |
| { |
| if (type_is_new) |
| ++types_added; |
| } |
| |
| if (parse_children && die->HasChildren()) |
| { |
| if (die->Tag() == DW_TAG_subprogram) |
| { |
| SymbolContext child_sc(sc); |
| child_sc.function = sc.comp_unit->FindFunctionByUID(MakeUserID(die->GetOffset())).get(); |
| types_added += ParseTypes(child_sc, dwarf_cu, die->GetFirstChild(), true, true); |
| } |
| else |
| types_added += ParseTypes(sc, dwarf_cu, die->GetFirstChild(), true, true); |
| } |
| |
| if (parse_siblings) |
| die = die->GetSibling(); |
| else |
| die = NULL; |
| } |
| return types_added; |
| } |
| |
| |
| size_t |
| SymbolFileDWARF::ParseFunctionBlocks (const SymbolContext &sc) |
| { |
| assert(sc.comp_unit && sc.function); |
| size_t functions_added = 0; |
| DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); |
| if (dwarf_cu) |
| { |
| dw_offset_t function_die_offset = sc.function->GetID(); |
| const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(function_die_offset); |
| if (function_die) |
| { |
| ParseFunctionBlocks(sc, &sc.function->GetBlock (false), dwarf_cu, function_die, LLDB_INVALID_ADDRESS, 0); |
| } |
| } |
| |
| return functions_added; |
| } |
| |
| |
| size_t |
| SymbolFileDWARF::ParseTypes (const SymbolContext &sc) |
| { |
| // At least a compile unit must be valid |
| assert(sc.comp_unit); |
| size_t types_added = 0; |
| DWARFCompileUnit* dwarf_cu = GetDWARFCompileUnitForUID(sc.comp_unit->GetID()); |
| if (dwarf_cu) |
| { |
| if (sc.function) |
| { |
| dw_offset_t function_die_offset = sc.function->GetID(); |
| const DWARFDebugInfoEntry *func_die = dwarf_cu->GetDIEPtr(function_die_offset); |
| if (func_die && func_die->HasChildren()) |
| { |
| types_added = ParseTypes(sc, dwarf_cu, func_die->GetFirstChild(), true, true); |
| } |
| } |
| else |
| { |
| const DWARFDebugInfoEntry *dwarf_cu_die = dwarf_cu->DIE(); |
| if (dwarf_cu_die && dwarf_cu_die->HasChildren()) |
| { |
| types_added = ParseTypes(sc, dwarf_cu, dwarf_cu_die->GetFirstChild(), true, true); |
| } |
| } |
| } |
| |
| return types_added; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseVariablesForContext (const SymbolContext& sc) |
| { |
| if (sc.comp_unit != NULL) |
| { |
| DWARFDebugInfo* info = DebugInfo(); |
| if (info == NULL) |
| return 0; |
| |
| uint32_t cu_idx = UINT32_MAX; |
| DWARFCompileUnit* dwarf_cu = info->GetCompileUnit(sc.comp_unit->GetID(), &cu_idx).get(); |
| |
| if (dwarf_cu == NULL) |
| return 0; |
| |
| if (sc.function) |
| { |
| const DWARFDebugInfoEntry *function_die = dwarf_cu->GetDIEPtr(sc.function->GetID()); |
| |
| dw_addr_t func_lo_pc = function_die->GetAttributeValueAsUnsigned (this, dwarf_cu, DW_AT_low_pc, DW_INVALID_ADDRESS); |
| if (func_lo_pc != DW_INVALID_ADDRESS) |
| { |
| const size_t num_variables = ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); |
| |
| // Let all blocks know they have parse all their variables |
| sc.function->GetBlock (false).SetDidParseVariables (true, true); |
| return num_variables; |
| } |
| } |
| else if (sc.comp_unit) |
| { |
| uint32_t vars_added = 0; |
| VariableListSP variables (sc.comp_unit->GetVariableList(false)); |
| |
| if (variables.get() == NULL) |
| { |
| variables.reset(new VariableList()); |
| sc.comp_unit->SetVariableList(variables); |
| |
| DWARFCompileUnit* match_dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| DIEArray die_offsets; |
| if (m_using_apple_tables) |
| { |
| if (m_apple_names_ap.get()) |
| { |
| DWARFMappedHash::DIEInfoArray hash_data_array; |
| if (m_apple_names_ap->AppendAllDIEsInRange (dwarf_cu->GetOffset(), |
| dwarf_cu->GetNextCompileUnitOffset(), |
| hash_data_array)) |
| { |
| DWARFMappedHash::ExtractDIEArray (hash_data_array, die_offsets); |
| } |
| } |
| } |
| else |
| { |
| // Index if we already haven't to make sure the compile units |
| // get indexed and make their global DIE index list |
| if (!m_indexed) |
| Index (); |
| |
| m_global_index.FindAllEntriesForCompileUnit (dwarf_cu->GetOffset(), |
| dwarf_cu->GetNextCompileUnitOffset(), |
| die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| if (num_matches) |
| { |
| DWARFDebugInfo* debug_info = DebugInfo(); |
| for (size_t i=0; i<num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = debug_info->GetDIEPtrWithCompileUnitHint (die_offset, &match_dwarf_cu); |
| if (die) |
| { |
| VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, LLDB_INVALID_ADDRESS)); |
| if (var_sp) |
| { |
| variables->AddVariableIfUnique (var_sp); |
| ++vars_added; |
| } |
| } |
| else |
| { |
| if (m_using_apple_tables) |
| { |
| GetObjectFile()->GetModule()->ReportErrorIfModifyDetected ("the DWARF debug information has been modified (.apple_names accelerator table had bad die 0x%8.8x)\n", die_offset); |
| } |
| } |
| |
| } |
| } |
| } |
| return vars_added; |
| } |
| } |
| return 0; |
| } |
| |
| |
| VariableSP |
| SymbolFileDWARF::ParseVariableDIE |
| ( |
| const SymbolContext& sc, |
| DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *die, |
| const lldb::addr_t func_low_pc |
| ) |
| { |
| |
| VariableSP var_sp (m_die_to_variable_sp[die]); |
| if (var_sp) |
| return var_sp; // Already been parsed! |
| |
| const dw_tag_t tag = die->Tag(); |
| |
| if ((tag == DW_TAG_variable) || |
| (tag == DW_TAG_constant) || |
| (tag == DW_TAG_formal_parameter && sc.function)) |
| { |
| DWARFDebugInfoEntry::Attributes attributes; |
| const size_t num_attributes = die->GetAttributes(this, dwarf_cu, NULL, attributes); |
| if (num_attributes > 0) |
| { |
| const char *name = NULL; |
| const char *mangled = NULL; |
| Declaration decl; |
| uint32_t i; |
| lldb::user_id_t type_uid = LLDB_INVALID_UID; |
| DWARFExpression location; |
| bool is_external = false; |
| bool is_artificial = false; |
| bool location_is_const_value_data = false; |
| AccessType accessibility = eAccessNone; |
| |
| for (i=0; i<num_attributes; ++i) |
| { |
| dw_attr_t attr = attributes.AttributeAtIndex(i); |
| DWARFFormValue form_value; |
| if (attributes.ExtractFormValueAtIndex(this, i, form_value)) |
| { |
| switch (attr) |
| { |
| case DW_AT_decl_file: decl.SetFile(sc.comp_unit->GetSupportFiles().GetFileSpecAtIndex(form_value.Unsigned())); break; |
| case DW_AT_decl_line: decl.SetLine(form_value.Unsigned()); break; |
| case DW_AT_decl_column: decl.SetColumn(form_value.Unsigned()); break; |
| case DW_AT_name: name = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_MIPS_linkage_name: mangled = form_value.AsCString(&get_debug_str_data()); break; |
| case DW_AT_type: type_uid = form_value.Reference(dwarf_cu); break; |
| case DW_AT_external: is_external = form_value.Unsigned() != 0; break; |
| case DW_AT_const_value: |
| location_is_const_value_data = true; |
| // Fall through... |
| case DW_AT_location: |
| { |
| if (form_value.BlockData()) |
| { |
| const DataExtractor& debug_info_data = get_debug_info_data(); |
| |
| uint32_t block_offset = form_value.BlockData() - debug_info_data.GetDataStart(); |
| uint32_t block_length = form_value.Unsigned(); |
| location.SetOpcodeData(get_debug_info_data(), block_offset, block_length); |
| } |
| else |
| { |
| const DataExtractor& debug_loc_data = get_debug_loc_data(); |
| const dw_offset_t debug_loc_offset = form_value.Unsigned(); |
| |
| size_t loc_list_length = DWARFLocationList::Size(debug_loc_data, debug_loc_offset); |
| if (loc_list_length > 0) |
| { |
| location.SetOpcodeData(debug_loc_data, debug_loc_offset, loc_list_length); |
| assert (func_low_pc != LLDB_INVALID_ADDRESS); |
| location.SetLocationListSlide (func_low_pc - dwarf_cu->GetBaseAddress()); |
| } |
| } |
| } |
| break; |
| |
| case DW_AT_artificial: is_artificial = form_value.Unsigned() != 0; break; |
| case DW_AT_accessibility: accessibility = DW_ACCESS_to_AccessType(form_value.Unsigned()); break; |
| case DW_AT_declaration: |
| case DW_AT_description: |
| case DW_AT_endianity: |
| case DW_AT_segment: |
| case DW_AT_start_scope: |
| case DW_AT_visibility: |
| default: |
| case DW_AT_abstract_origin: |
| case DW_AT_sibling: |
| case DW_AT_specification: |
| break; |
| } |
| } |
| } |
| |
| if (location.IsValid()) |
| { |
| ValueType scope = eValueTypeInvalid; |
| |
| const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); |
| dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; |
| SymbolContextScope * symbol_context_scope = NULL; |
| |
| // DWARF doesn't specify if a DW_TAG_variable is a local, global |
| // or static variable, so we have to do a little digging by |
| // looking at the location of a varaible to see if it contains |
| // a DW_OP_addr opcode _somewhere_ in the definition. I say |
| // somewhere because clang likes to combine small global variables |
| // into the same symbol and have locations like: |
| // DW_OP_addr(0x1000), DW_OP_constu(2), DW_OP_plus |
| // So if we don't have a DW_TAG_formal_parameter, we can look at |
| // the location to see if it contains a DW_OP_addr opcode, and |
| // then we can correctly classify our variables. |
| if (tag == DW_TAG_formal_parameter) |
| scope = eValueTypeVariableArgument; |
| else |
| { |
| bool op_error = false; |
| // Check if the location has a DW_OP_addr with any address value... |
| addr_t location_has_op_addr = false; |
| if (!location_is_const_value_data) |
| { |
| location_has_op_addr = location.LocationContains_DW_OP_addr (LLDB_INVALID_ADDRESS, op_error); |
| if (op_error) |
| { |
| StreamString strm; |
| location.DumpLocationForAddress (&strm, eDescriptionLevelFull, 0, 0, NULL); |
| GetObjectFile()->GetModule()->ReportError ("0x%8.8x: %s has an invalid location: %s", die->GetOffset(), DW_TAG_value_to_name(die->Tag()), strm.GetString().c_str()); |
| } |
| } |
| |
| if (location_has_op_addr) |
| { |
| if (is_external) |
| { |
| scope = eValueTypeVariableGlobal; |
| |
| if (m_debug_map_symfile) |
| { |
| // When leaving the DWARF in the .o files on darwin, |
| // when we have a global variable that wasn't initialized, |
| // the .o file might not have allocated a virtual |
| // address for the global variable. In this case it will |
| // have created a symbol for the global variable |
| // that is undefined and external and the value will |
| // be the byte size of the variable. When we do the |
| // address map in SymbolFileDWARFDebugMap we rely on |
| // having an address, we need to do some magic here |
| // so we can get the correct address for our global |
| // variable. The address for all of these entries |
| // will be zero, and there will be an undefined symbol |
| // in this object file, and the executable will have |
| // a matching symbol with a good address. So here we |
| // dig up the correct address and replace it in the |
| // location for the variable, and set the variable's |
| // symbol context scope to be that of the main executable |
| // so the file address will resolve correctly. |
| if (location.LocationContains_DW_OP_addr (0, op_error)) |
| { |
| |
| // we have a possible uninitialized extern global |
| Symtab *symtab = m_obj_file->GetSymtab(); |
| if (symtab) |
| { |
| ConstString const_name(name); |
| Symbol *undefined_symbol = symtab->FindFirstSymbolWithNameAndType (const_name, |
| eSymbolTypeUndefined, |
| Symtab::eDebugNo, |
| Symtab::eVisibilityExtern); |
| |
| if (undefined_symbol) |
| { |
| ObjectFile *debug_map_objfile = m_debug_map_symfile->GetObjectFile(); |
| if (debug_map_objfile) |
| { |
| Symtab *debug_map_symtab = debug_map_objfile->GetSymtab(); |
| Symbol *defined_symbol = debug_map_symtab->FindFirstSymbolWithNameAndType (const_name, |
| eSymbolTypeData, |
| Symtab::eDebugYes, |
| Symtab::eVisibilityExtern); |
| if (defined_symbol) |
| { |
| const AddressRange *defined_range = defined_symbol->GetAddressRangePtr(); |
| if (defined_range) |
| { |
| const addr_t defined_addr = defined_range->GetBaseAddress().GetFileAddress(); |
| if (defined_addr != LLDB_INVALID_ADDRESS) |
| { |
| if (location.Update_DW_OP_addr (defined_addr)) |
| { |
| symbol_context_scope = defined_symbol; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| else |
| { |
| scope = eValueTypeVariableStatic; |
| } |
| } |
| else |
| { |
| scope = eValueTypeVariableLocal; |
| } |
| } |
| |
| if (symbol_context_scope == NULL) |
| { |
| switch (parent_tag) |
| { |
| case DW_TAG_subprogram: |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_lexical_block: |
| if (sc.function) |
| { |
| symbol_context_scope = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); |
| if (symbol_context_scope == NULL) |
| symbol_context_scope = sc.function; |
| } |
| break; |
| |
| default: |
| symbol_context_scope = sc.comp_unit; |
| break; |
| } |
| } |
| |
| if (symbol_context_scope) |
| { |
| var_sp.reset (new Variable (MakeUserID(die->GetOffset()), |
| name, |
| mangled, |
| SymbolFileTypeSP (new SymbolFileType(*this, type_uid)), |
| scope, |
| symbol_context_scope, |
| &decl, |
| location, |
| is_external, |
| is_artificial)); |
| |
| var_sp->SetLocationIsConstantValueData (location_is_const_value_data); |
| } |
| else |
| { |
| // Not ready to parse this variable yet. It might be a global |
| // or static variable that is in a function scope and the function |
| // in the symbol context wasn't filled in yet |
| return var_sp; |
| } |
| } |
| } |
| // Cache var_sp even if NULL (the variable was just a specification or |
| // was missing vital information to be able to be displayed in the debugger |
| // (missing location due to optimization, etc)) so we don't re-parse |
| // this DIE over and over later... |
| m_die_to_variable_sp[die] = var_sp; |
| } |
| return var_sp; |
| } |
| |
| |
| const DWARFDebugInfoEntry * |
| SymbolFileDWARF::FindBlockContainingSpecification (dw_offset_t func_die_offset, |
| dw_offset_t spec_block_die_offset, |
| DWARFCompileUnit **result_die_cu_handle) |
| { |
| // Give the concrete function die specified by "func_die_offset", find the |
| // concrete block whose DW_AT_specification or DW_AT_abstract_origin points |
| // to "spec_block_die_offset" |
| DWARFDebugInfo* info = DebugInfo(); |
| |
| const DWARFDebugInfoEntry *die = info->GetDIEPtrWithCompileUnitHint(func_die_offset, result_die_cu_handle); |
| if (die) |
| { |
| assert (*result_die_cu_handle); |
| return FindBlockContainingSpecification (*result_die_cu_handle, die, spec_block_die_offset, result_die_cu_handle); |
| } |
| return NULL; |
| } |
| |
| |
| const DWARFDebugInfoEntry * |
| SymbolFileDWARF::FindBlockContainingSpecification(DWARFCompileUnit* dwarf_cu, |
| const DWARFDebugInfoEntry *die, |
| dw_offset_t spec_block_die_offset, |
| DWARFCompileUnit **result_die_cu_handle) |
| { |
| if (die) |
| { |
| switch (die->Tag()) |
| { |
| case DW_TAG_subprogram: |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_lexical_block: |
| { |
| if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_specification, DW_INVALID_OFFSET) == spec_block_die_offset) |
| { |
| *result_die_cu_handle = dwarf_cu; |
| return die; |
| } |
| |
| if (die->GetAttributeValueAsReference (this, dwarf_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET) == spec_block_die_offset) |
| { |
| *result_die_cu_handle = dwarf_cu; |
| return die; |
| } |
| } |
| break; |
| } |
| |
| // Give the concrete function die specified by "func_die_offset", find the |
| // concrete block whose DW_AT_specification or DW_AT_abstract_origin points |
| // to "spec_block_die_offset" |
| for (const DWARFDebugInfoEntry *child_die = die->GetFirstChild(); child_die != NULL; child_die = child_die->GetSibling()) |
| { |
| const DWARFDebugInfoEntry *result_die = FindBlockContainingSpecification (dwarf_cu, |
| child_die, |
| spec_block_die_offset, |
| result_die_cu_handle); |
| if (result_die) |
| return result_die; |
| } |
| } |
| |
| *result_die_cu_handle = NULL; |
| return NULL; |
| } |
| |
| size_t |
| SymbolFileDWARF::ParseVariables |
| ( |
| const SymbolContext& sc, |
| DWARFCompileUnit* dwarf_cu, |
| const lldb::addr_t func_low_pc, |
| const DWARFDebugInfoEntry *orig_die, |
| bool parse_siblings, |
| bool parse_children, |
| VariableList* cc_variable_list |
| ) |
| { |
| if (orig_die == NULL) |
| return 0; |
| |
| VariableListSP variable_list_sp; |
| |
| size_t vars_added = 0; |
| const DWARFDebugInfoEntry *die = orig_die; |
| while (die != NULL) |
| { |
| dw_tag_t tag = die->Tag(); |
| |
| // Check to see if we have already parsed this variable or constant? |
| if (m_die_to_variable_sp[die]) |
| { |
| if (cc_variable_list) |
| cc_variable_list->AddVariableIfUnique (m_die_to_variable_sp[die]); |
| } |
| else |
| { |
| // We haven't already parsed it, lets do that now. |
| if ((tag == DW_TAG_variable) || |
| (tag == DW_TAG_constant) || |
| (tag == DW_TAG_formal_parameter && sc.function)) |
| { |
| if (variable_list_sp.get() == NULL) |
| { |
| const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); |
| dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; |
| switch (parent_tag) |
| { |
| case DW_TAG_compile_unit: |
| if (sc.comp_unit != NULL) |
| { |
| variable_list_sp = sc.comp_unit->GetVariableList(false); |
| if (variable_list_sp.get() == NULL) |
| { |
| variable_list_sp.reset(new VariableList()); |
| sc.comp_unit->SetVariableList(variable_list_sp); |
| } |
| } |
| else |
| { |
| GetObjectFile()->GetModule()->ReportError ("parent 0x%8.8llx %s with no valid compile unit in symbol context for 0x%8.8llx %s.\n", |
| MakeUserID(sc_parent_die->GetOffset()), |
| DW_TAG_value_to_name (parent_tag), |
| MakeUserID(orig_die->GetOffset()), |
| DW_TAG_value_to_name (orig_die->Tag())); |
| } |
| break; |
| |
| case DW_TAG_subprogram: |
| case DW_TAG_inlined_subroutine: |
| case DW_TAG_lexical_block: |
| if (sc.function != NULL) |
| { |
| // Check to see if we already have parsed the variables for the given scope |
| |
| Block *block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(sc_parent_die->GetOffset())); |
| if (block == NULL) |
| { |
| // This must be a specification or abstract origin with |
| // a concrete block couterpart in the current function. We need |
| // to find the concrete block so we can correctly add the |
| // variable to it |
| DWARFCompileUnit *concrete_block_die_cu = dwarf_cu; |
| const DWARFDebugInfoEntry *concrete_block_die = FindBlockContainingSpecification (sc.function->GetID(), |
| sc_parent_die->GetOffset(), |
| &concrete_block_die_cu); |
| if (concrete_block_die) |
| block = sc.function->GetBlock(true).FindBlockByID(MakeUserID(concrete_block_die->GetOffset())); |
| } |
| |
| if (block != NULL) |
| { |
| const bool can_create = false; |
| variable_list_sp = block->GetBlockVariableList (can_create); |
| if (variable_list_sp.get() == NULL) |
| { |
| variable_list_sp.reset(new VariableList()); |
| block->SetVariableList(variable_list_sp); |
| } |
| } |
| } |
| break; |
| |
| default: |
| GetObjectFile()->GetModule()->ReportError ("didn't find appropriate parent DIE for variable list for 0x%8.8llx %s.\n", |
| MakeUserID(orig_die->GetOffset()), |
| DW_TAG_value_to_name (orig_die->Tag())); |
| break; |
| } |
| } |
| |
| if (variable_list_sp) |
| { |
| VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); |
| if (var_sp) |
| { |
| variable_list_sp->AddVariableIfUnique (var_sp); |
| if (cc_variable_list) |
| cc_variable_list->AddVariableIfUnique (var_sp); |
| ++vars_added; |
| } |
| } |
| } |
| } |
| |
| bool skip_children = (sc.function == NULL && tag == DW_TAG_subprogram); |
| |
| if (!skip_children && parse_children && die->HasChildren()) |
| { |
| vars_added += ParseVariables(sc, dwarf_cu, func_low_pc, die->GetFirstChild(), true, true, cc_variable_list); |
| } |
| |
| if (parse_siblings) |
| die = die->GetSibling(); |
| else |
| die = NULL; |
| } |
| return vars_added; |
| } |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| const char * |
| SymbolFileDWARF::GetPluginName() |
| { |
| return "SymbolFileDWARF"; |
| } |
| |
| const char * |
| SymbolFileDWARF::GetShortPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| SymbolFileDWARF::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| void |
| SymbolFileDWARF::CompleteTagDecl (void *baton, clang::TagDecl *decl) |
| { |
| SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; |
| clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); |
| if (clang_type) |
| symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); |
| } |
| |
| void |
| SymbolFileDWARF::CompleteObjCInterfaceDecl (void *baton, clang::ObjCInterfaceDecl *decl) |
| { |
| SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; |
| clang_type_t clang_type = symbol_file_dwarf->GetClangASTContext().GetTypeForDecl (decl); |
| if (clang_type) |
| symbol_file_dwarf->ResolveClangOpaqueTypeDefinition (clang_type); |
| } |
| |
| void |
| SymbolFileDWARF::DumpIndexes () |
| { |
| StreamFile s(stdout, false); |
| |
| s.Printf ("DWARF index for (%s) '%s/%s':", |
| GetObjectFile()->GetModule()->GetArchitecture().GetArchitectureName(), |
| GetObjectFile()->GetFileSpec().GetDirectory().AsCString(), |
| GetObjectFile()->GetFileSpec().GetFilename().AsCString()); |
| s.Printf("\nFunction basenames:\n"); m_function_basename_index.Dump (&s); |
| s.Printf("\nFunction fullnames:\n"); m_function_fullname_index.Dump (&s); |
| s.Printf("\nFunction methods:\n"); m_function_method_index.Dump (&s); |
| s.Printf("\nFunction selectors:\n"); m_function_selector_index.Dump (&s); |
| s.Printf("\nObjective C class selectors:\n"); m_objc_class_selectors_index.Dump (&s); |
| s.Printf("\nGlobals and statics:\n"); m_global_index.Dump (&s); |
| s.Printf("\nTypes:\n"); m_type_index.Dump (&s); |
| s.Printf("\nNamepaces:\n"); m_namespace_index.Dump (&s); |
| } |
| |
| void |
| SymbolFileDWARF::SearchDeclContext (const clang::DeclContext *decl_context, |
| const char *name, |
| llvm::SmallVectorImpl <clang::NamedDecl *> *results) |
| { |
| DeclContextToDIEMap::iterator iter = m_decl_ctx_to_die.find(decl_context); |
| |
| if (iter == m_decl_ctx_to_die.end()) |
| return; |
| |
| for (DIEPointerSet::iterator pos = iter->second.begin(), end = iter->second.end(); pos != end; ++pos) |
| { |
| const DWARFDebugInfoEntry *context_die = *pos; |
| |
| if (!results) |
| return; |
| |
| DWARFDebugInfo* info = DebugInfo(); |
| |
| DIEArray die_offsets; |
| |
| DWARFCompileUnit* dwarf_cu = NULL; |
| const DWARFDebugInfoEntry* die = NULL; |
| |
| if (m_using_apple_tables) |
| { |
| if (m_apple_types_ap.get()) |
| m_apple_types_ap->FindByName (name, die_offsets); |
| } |
| else |
| { |
| if (!m_indexed) |
| Index (); |
| |
| m_type_index.Find (ConstString(name), die_offsets); |
| } |
| |
| const size_t num_matches = die_offsets.size(); |
| |
| if (num_matches) |
| { |
| for (size_t i = 0; i < num_matches; ++i) |
| { |
| const dw_offset_t die_offset = die_offsets[i]; |
| die = info->GetDIEPtrWithCompileUnitHint (die_offset, &dwarf_cu); |
| |
| if (die->GetParent() != context_die) |
| continue; |
| |
| Type *matching_type = ResolveType (dwarf_cu, die); |
| |
| lldb::clang_type_t type = matching_type->GetClangForwardType(); |
| clang::QualType qual_type = clang::QualType::getFromOpaquePtr(type); |
| |
| if (const clang::TagType *tag_type = llvm::dyn_cast<clang::TagType>(qual_type.getTypePtr())) |
| { |
| clang::TagDecl *tag_decl = tag_type->getDecl(); |
| results->push_back(tag_decl); |
| } |
| else if (const clang::TypedefType *typedef_type = llvm::dyn_cast<clang::TypedefType>(qual_type.getTypePtr())) |
| { |
| clang::TypedefNameDecl *typedef_decl = typedef_type->getDecl(); |
| results->push_back(typedef_decl); |
| } |
| } |
| } |
| } |
| } |
| |
| void |
| SymbolFileDWARF::FindExternalVisibleDeclsByName (void *baton, |
| const clang::DeclContext *decl_context, |
| clang::DeclarationName decl_name, |
| llvm::SmallVectorImpl <clang::NamedDecl *> *results) |
| { |
| |
| switch (decl_context->getDeclKind()) |
| { |
| case clang::Decl::Namespace: |
| case clang::Decl::TranslationUnit: |
| { |
| SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; |
| symbol_file_dwarf->SearchDeclContext (decl_context, decl_name.getAsString().c_str(), results); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| bool |
| SymbolFileDWARF::LayoutRecordType (void *baton, |
| const clang::RecordDecl *record_decl, |
| uint64_t &size, |
| uint64_t &alignment, |
| llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, |
| llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, |
| llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) |
| { |
| SymbolFileDWARF *symbol_file_dwarf = (SymbolFileDWARF *)baton; |
| return symbol_file_dwarf->LayoutRecordType (record_decl, size, alignment, field_offsets, base_offsets, vbase_offsets); |
| } |
| |
| |
| bool |
| SymbolFileDWARF::LayoutRecordType (const clang::RecordDecl *record_decl, |
| uint64_t &bit_size, |
| uint64_t &alignment, |
| llvm::DenseMap <const clang::FieldDecl *, uint64_t> &field_offsets, |
| llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &base_offsets, |
| llvm::DenseMap <const clang::CXXRecordDecl *, clang::CharUnits> &vbase_offsets) |
| { |
| LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO)); |
| RecordDeclToLayoutMap::iterator pos = m_record_decl_to_layout_map.find (record_decl); |
| bool success = false; |
| base_offsets.clear(); |
| vbase_offsets.clear(); |
| if (pos != m_record_decl_to_layout_map.end()) |
| { |
| bit_size = pos->second.bit_size; |
| alignment = pos->second.alignment; |
| field_offsets.swap(pos->second.field_offsets); |
| m_record_decl_to_layout_map.erase(pos); |
| success = true; |
| } |
| else |
| { |
| bit_size = 0; |
| alignment = 0; |
| field_offsets.clear(); |
| } |
| |
| if (log) |
| GetObjectFile()->GetModule()->LogMessage (log.get(), |
| "SymbolFileDWARF::LayoutRecordType (record_decl = %p, bit_size = %llu, alignment = %llu, field_offsets[%u],base_offsets[%u], vbase_offsets[%u]) success = %i", |
| record_decl, |
| bit_size, |
| alignment, |
| (uint32_t)field_offsets.size(), |
| (uint32_t)base_offsets.size(), |
| (uint32_t)vbase_offsets.size(), |
| success); |
| return success; |
| } |
| |
| |
| |