//===-- 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/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 "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/Timer.h" #include "lldb/Core/Value.h" #include "lldb/Symbol/Block.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 "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 //#define ENABLE_DEBUG_PRINTF // COMMENT OUT THIS LINE PRIOR TO CHECKIN #ifdef ENABLE_DEBUG_PRINTF #include #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 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 "symbol-file.dwarf2"; } const char * SymbolFileDWARF::GetPluginDescriptionStatic() { return "DWARF and DWARF3 debug symbol file reader."; } SymbolFile* SymbolFileDWARF::CreateInstance (ObjectFile* obj_file) { return new SymbolFileDWARF(obj_file); } ClangASTContext & SymbolFileDWARF::GetClangASTContext() { return GetTypeList()->GetClangASTContext(); } 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), m_debug_map_symfile (NULL), m_clang_tu_decl (NULL), m_flags(), m_data_debug_abbrev(), 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_abbr(), m_aranges(), m_info(), m_line(), 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_ranges() { } SymbolFileDWARF::~SymbolFileDWARF() { } bool SymbolFileDWARF::SupportedVersion(uint16_t version) { return version == 2 || version == 3; } uint32_t SymbolFileDWARF::GetAbilities () { 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; static ConstString g_dwarf_section_name ("__DWARF"); section = section_list->FindSectionByName(g_dwarf_section_name).get(); if (section) { section->MemoryMapSectionDataFromObjectFile(m_obj_file, m_dwarf_data); 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_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); } 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(); } DWARFDebugAranges* SymbolFileDWARF::DebugAranges() { // It turns out that llvm-gcc doesn't generate .debug_aranges in .o files // and we are already parsing all of the DWARF because the .debug_pubnames // is useless (it only mentions symbols that are externally visible), so // don't use the .debug_aranges section, we should be using a debug aranges // we got from SymbolFileDWARF::Index(). if (!m_indexed) Index(); // if (m_aranges.get() == NULL) // { // Timer scoped_timer(__PRETTY_FUNCTION__, "%s this = %p", __PRETTY_FUNCTION__, this); // m_aranges.reset(new DWARFDebugAranges()); // if (m_aranges.get()) // { // const DataExtractor &debug_aranges_data = get_debug_aranges_data(); // if (debug_aranges_data.GetByteSize() > 0) // m_aranges->Extract(debug_aranges_data); // else // m_aranges->Generate(this); // } // } return m_aranges.get(); } const DWARFDebugAranges* SymbolFileDWARF::DebugAranges() const { return m_aranges.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) return info->GetCompileUnit(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 class_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]) { // 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, curr_cu->GetOffset(), class_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 ) { ranges.SubtractOffset (block_base_addr); size_t range_idx = 0; const DWARFDebugRanges::Range *debug_range; for (range_idx = 0; (debug_range = ranges.RangeAtIndex(range_idx)) != NULL; range_idx++) { block.AddRange(debug_range->begin_offset, debug_range->end_offset); } } 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; const DWARFDebugInfoEntry *parent_die = die->GetParent(); switch (parent_die->Tag()) { case DW_TAG_structure_type: case DW_TAG_class_type: // We have methods of a class or struct { Type *class_type = ResolveType (dwarf_cu, parent_die); if (class_type) class_type->GetClangType(); } break; default: // Parse the function prototype as a type that can then be added to concrete function instance ParseTypes (sc, dwarf_cu, die, false, false); break; } //FixupTypes(); 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.LowestAddress(0); lldb::addr_t highest_func_addr = func_ranges.HighestAddress(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 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)); Type *func_type = m_die_to_type.lookup (die); assert(func_type == NULL || func_type != DIE_IS_BEING_PARSED); func_range.GetBaseAddress().ResolveLinkedAddress(); func_sp.reset(new Function (sc.comp_unit, die->GetOffset(), // UserID is the DIE offset die->GetOffset(), func_name, func_type, func_range)); // first address range if (func_sp.get() != NULL) { 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 (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(); 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 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}; 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, bool parse_siblings, bool parse_children ) { 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: { DWARFDebugRanges::RangeList ranges; const char *name = NULL; const char *mangled_name = NULL; Block *block = NULL; if (tag != DW_TAG_subprogram) { BlockSP block_sp(new Block (die->GetOffset())); parent_block->AddChild(block_sp); block = block_sp.get(); } else { block = parent_block; } 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.LowestAddress(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.LowestAddress(0); } } AddRangesToBlock (*block, ranges, subprogram_low_pc); if (tag != DW_TAG_subprogram && (name != NULL || mangled_name != NULL)) { std::auto_ptr 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 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 (parse_children && die->HasChildren()) { blocks_added += ParseFunctionBlocks (sc, block, dwarf_cu, die->GetFirstChild(), subprogram_low_pc, true, true); } } } break; default: break; } if (parse_siblings) die = die->GetSibling(); else die = NULL; } return blocks_added; } 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& base_classes, std::vector& member_accessibilities, DWARFDIECollection& member_function_dies, AccessType& default_accessibility, bool &is_a_class ) { if (parent_die == NULL) return 0; size_t count = 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()) { 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; bool is_artificial = false; lldb::user_id_t encoding_uid = LLDB_INVALID_UID; AccessType accessibility = eAccessNone; //off_t member_offset = 0; size_t byte_size = 0; size_t bit_offset = 0; size_t bit_size = 0; uint32_t i; for (i=0; iGetSupportFiles().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, NULL, debug_info_data, NULL, NULL, 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_artificial: is_artificial = form_value.Unsigned() != 0; break; case DW_AT_declaration: case DW_AT_description: case DW_AT_mutable: case DW_AT_visibility: default: case DW_AT_sibling: break; } } } // FIXME: Make Clang ignore Objective-C accessibility for expressions if (class_language == eLanguageTypeObjC || class_language == eLanguageTypeObjC_plus_plus) accessibility = eAccessNone; if (is_artificial == false) { Type *member_type = ResolveTypeUID(encoding_uid); assert(member_type); if (accessibility == eAccessNone) accessibility = default_accessibility; member_accessibilities.push_back(accessibility); GetClangASTContext().AddFieldToRecordType (class_clang_type, name, member_type->GetClangLayoutType(), accessibility, bit_size); } } } 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; iGetSupportFiles().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, debug_info_data, NULL, NULL, NULL, 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); if (class_language == eLanguageTypeObjC) { GetClangASTContext().SetObjCSuperClass(class_clang_type, base_class_type->GetClangType()); } else { base_classes.push_back (GetClangASTContext().CreateBaseClassSpecifier (base_class_type->GetClangType(), accessibility, is_virtual, is_base_of_class)); assert(base_classes.back()); } } } break; default: break; } } return count; } clang::DeclContext* SymbolFileDWARF::GetClangDeclContextForTypeUID (lldb::user_id_t type_uid) { DWARFDebugInfo* debug_info = DebugInfo(); if (debug_info) { DWARFCompileUnitSP cu_sp; const DWARFDebugInfoEntry* die = debug_info->GetDIEPtr(type_uid, &cu_sp); if (die) return GetClangDeclContextForDIE (cu_sp.get(), die); } return NULL; } Type* SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid) { DWARFDebugInfo* debug_info = DebugInfo(); if (debug_info) { DWARFCompileUnitSP cu_sp; const DWARFDebugInfoEntry* type_die = debug_info->GetDIEPtr(type_uid, &cu_sp); if (type_die != NULL) return ResolveType (cu_sp.get(), type_die); } return 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. const DWARFDebugInfoEntry* die = m_forward_decl_clang_type_to_die.lookup (ClangASTType::RemoveFastQualifiers(clang_type)); 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 (ClangASTType::RemoveFastQualifiers(clang_type)); 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(); DEBUG_PRINTF ("0x%8.8x: %s (\"%s\") - resolve forward declaration...\n", 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); 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 base_classes; std::vector 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); // 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 method_die_infos; if (m_objc_class_selectors_index.Find (class_name, method_die_infos)) { DWARFCompileUnit* method_cu = NULL; DWARFCompileUnit* prev_method_cu = NULL; const size_t num_objc_methods = method_die_infos.size(); for (size_t i=0;iGetCompileUnitAtIndex(method_die_infos[i].cu_idx); if (method_cu != prev_method_cu) method_cu->ExtractDIEsIfNeeded (false); DWARFDebugInfoEntry *method_die = method_cu->GetDIEAtIndexUnchecked(method_die_infos[i].die_idx); ResolveType (method_cu, method_die); } } } } // 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()); } } 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) assert (type != DIE_IS_BEING_PARSED); 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.module_sp = m_obj_file->GetModule()->GetSP(); sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, UINT32_MAX); sc.function = sc.comp_unit->FindFunctionByUID (func_die->GetOffset()).get(); if (sc.function == NULL) sc.function = ParseCompileUnitFunction(sc, curr_cu, func_die); return sc.function != NULL; } 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(); DWARFDebugAranges* debug_aranges = DebugAranges(); DWARFDebugInfo* debug_info = DebugInfo(); if (debug_aranges) { dw_offset_t cu_offset = debug_aranges->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 (ParseCompileUnitLineTable(sc)) 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 (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 (block_die->GetOffset()); else sc.block = block.FindBlockByID (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); 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); 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 (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 (block_die->GetOffset()); else sc.block = block.FindBlockByID (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) { m_aranges.reset(new DWARFDebugAranges()); 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, DebugRanges(), m_aranges.get()); // Keep memory down by clearing DIEs if this generate function // caused them to be parsed if (clear_dies) curr_cu->ClearDIEs (true); } m_aranges->Sort(); #if defined (ENABLE_DEBUG_PRINTF) StreamFile s(stdout); s.Printf ("DWARF index for (%s) '%s/%s':", GetObjectFile()->GetModule()->GetArchitecture().AsCString(), 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 } } uint32_t SymbolFileDWARF::FindGlobalVariables (const ConstString &name, bool append, uint32_t max_matches, VariableList& variables) { 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(); // Index the DWARF if we haven't already if (!m_indexed) Index (); SymbolContext sc; sc.module_sp = m_obj_file->GetModule()->GetSP(); assert (sc.module_sp); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = m_global_index.Find(name, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, UINT32_MAX); assert(sc.comp_unit != NULL); ParseVariables(sc, curr_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); if (variables.GetSize() - original_size >= max_matches) break; } // 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) { 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(); // Index the DWARF if we haven't already if (!m_indexed) Index (); SymbolContext sc; sc.module_sp = m_obj_file->GetModule()->GetSP(); assert (sc.module_sp); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = m_global_index.Find(regex, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); sc.comp_unit = GetCompUnitForDWARFCompUnit(curr_cu, UINT32_MAX); assert(sc.comp_unit != NULL); ParseVariables(sc, curr_cu, LLDB_INVALID_ADDRESS, die, false, false, &variables); if (variables.GetSize() - original_size >= max_matches) break; } // Return the number of variable that were appended to the list return variables.GetSize() - original_size; } void SymbolFileDWARF::FindFunctions ( const ConstString &name, const NameToDIE &name_to_die, SymbolContextList& sc_list ) { DWARFDebugInfo* info = DebugInfo(); if (info == NULL) return; SymbolContext sc; sc.module_sp = m_obj_file->GetModule()->GetSP(); assert (sc.module_sp); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = name_to_die.Find (name, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); 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 (curr_cu, die, sc)) { Address addr; // Parse all blocks if needed if (inlined_die) { sc.block = sc.function->GetBlock (true).FindBlockByID (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()) { // We found the function, so we should find the line table // and line table entry as well LineTable *line_table = sc.comp_unit->GetLineTable(); if (line_table == NULL) { if (ParseCompileUnitLineTable(sc)) line_table = sc.comp_unit->GetLineTable(); } if (line_table != NULL) line_table->FindLineEntryByAddress (addr, sc.line_entry); sc_list.Append(sc); } } } } void SymbolFileDWARF::FindFunctions ( const RegularExpression ®ex, const NameToDIE &name_to_die, SymbolContextList& sc_list ) { DWARFDebugInfo* info = DebugInfo(); if (info == NULL) return; SymbolContext sc; sc.module_sp = m_obj_file->GetModule()->GetSP(); assert (sc.module_sp); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = name_to_die.Find(regex, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); 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 (curr_cu, die, sc)) { Address addr; // Parse all blocks if needed if (inlined_die) { sc.block = sc.function->GetBlock (true).FindBlockByID (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()) { // We found the function, so we should find the line table // and line table entry as well LineTable *line_table = sc.comp_unit->GetLineTable(); if (line_table == NULL) { if (ParseCompileUnitLineTable(sc)) line_table = sc.comp_unit->GetLineTable(); } if (line_table != NULL) line_table->FindLineEntryByAddress (addr, sc.line_entry); sc_list.Append(sc); } } } } uint32_t SymbolFileDWARF::FindFunctions ( const ConstString &name, uint32_t name_type_mask, bool append, SymbolContextList& sc_list ) { Timer scoped_timer (__PRETTY_FUNCTION__, "SymbolFileDWARF::FindFunctions (name = '%s')", name.AsCString()); // 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(); // Index the DWARF if we haven't already if (!m_indexed) Index (); if (name_type_mask & eFunctionNameTypeBase) FindFunctions (name, m_function_basename_index, sc_list); if (name_type_mask & eFunctionNameTypeFull) FindFunctions (name, m_function_fullname_index, sc_list); if (name_type_mask & eFunctionNameTypeMethod) FindFunctions (name, m_function_method_index, sc_list); if (name_type_mask & eFunctionNameTypeSelector) 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()); // 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(); // 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, bool append, uint32_t max_matches, TypeList& types) { DWARFDebugInfo* info = DebugInfo(); if (info == NULL) return 0; // If we aren't appending the results to this list, then clear the list if (!append) types.Clear(); // 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 (); const uint32_t initial_types_size = types.GetSize(); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = m_type_index.Find (name, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); Type *matching_type = ResolveType (curr_cu, die); if (matching_type) { // We found a type pointer, now find the shared pointer form our type list TypeSP type_sp (GetTypeList()->FindType(matching_type->GetID())); assert (type_sp.get() != NULL); types.InsertUnique (type_sp); if (types.GetSize() >= max_matches) break; } } return types.GetSize() - initial_types_size; } ClangNamespaceDecl SymbolFileDWARF::FindNamespace (const SymbolContext& sc, const ConstString &name) { ClangNamespaceDecl namespace_decl; DWARFDebugInfo* info = DebugInfo(); if (info) { // 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 (); DWARFCompileUnit* curr_cu = NULL; DWARFCompileUnit* prev_cu = NULL; const DWARFDebugInfoEntry* die = NULL; std::vector die_info_array; const size_t num_matches = m_namespace_index.Find (name, die_info_array); for (size_t i=0; iGetCompileUnitAtIndex(die_info_array[i].cu_idx); if (curr_cu != prev_cu) curr_cu->ExtractDIEsIfNeeded (false); die = curr_cu->GetDIEAtIndexUnchecked(die_info_array[i].die_idx); clang::NamespaceDecl *clang_namespace_decl = ResolveNamespaceDIE (curr_cu, die); if (clang_namespace_decl) { namespace_decl.SetASTContext (GetClangASTContext().getASTContext()); namespace_decl.SetNamespaceDecl (clang_namespace_decl); } } } return namespace_decl; } uint32_t SymbolFileDWARF::FindTypes(std::vector 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 TypeSP type_sp (GetTypeList()->FindType(matching_type->GetID())); assert (type_sp.get() != NULL); types.InsertUnique (type_sp); ++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, TypeSP& type_sp, DWARFCompileUnit* dwarf_cu, const DWARFDebugInfoEntry *parent_die, bool skip_artificial, TypeList* type_list, std::vector& function_param_types, std::vector& 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; iGetSupportFiles().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) { const DWARFDebugInfoEntry *grandparent_die = parent_die->GetParent(); if (grandparent_die && (grandparent_die->Tag() == DW_TAG_structure_type || grandparent_die->Tag() == DW_TAG_class_type)) { LanguageType language = sc.comp_unit->GetLanguage(); if (language == eLanguageTypeObjC_plus_plus || language == eLanguageTypeC_plus_plus) { // 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) { 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; iGetSupportFiles().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& 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; iGetAttributes(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 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) { SymbolContext sc(GetCompUnitForDWARFCompUnit(curr_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 = GetTypeList()->FindType(type_ptr->GetID()); } } return type_sp; } clang::DeclContext * SymbolFileDWARF::GetClangDeclContextForDIEOffset (dw_offset_t die_offset) { if (die_offset != DW_INVALID_OFFSET) { DWARFCompileUnitSP cu_sp; const DWARFDebugInfoEntry* die = DebugInfo()->GetDIEPtr(die_offset, &cu_sp); return GetClangDeclContextForDIE (cu_sp.get(), die); } return NULL; } clang::NamespaceDecl * SymbolFileDWARF::ResolveNamespaceDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry *die) { if (die->Tag() == DW_TAG_namespace) { const char *namespace_name = die->GetAttributeValueAsString(this, curr_cu, DW_AT_name, NULL); if (namespace_name) { Declaration decl; // TODO: fill in the decl object clang::NamespaceDecl *namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, decl, GetClangDeclContextForDIE (curr_cu, die->GetParent())); if (namespace_decl) m_die_to_decl_ctx[die] = (clang::DeclContext*)namespace_decl; return namespace_decl; } } return NULL; } clang::DeclContext * SymbolFileDWARF::GetClangDeclContextForDIE (DWARFCompileUnit *curr_cu, const DWARFDebugInfoEntry *die) { DIEToDeclContextMap::iterator pos = m_die_to_decl_ctx.find(die); if (pos != m_die_to_decl_ctx.end()) return pos->second; while (die != NULL) { switch (die->Tag()) { case DW_TAG_namespace: { const char *namespace_name = die->GetAttributeValueAsString(this, curr_cu, DW_AT_name, NULL); if (namespace_name) { Declaration decl; // TODO: fill in the decl object clang::NamespaceDecl *namespace_decl = GetClangASTContext().GetUniqueNamespaceDeclaration (namespace_name, decl, GetClangDeclContextForDIE (curr_cu, die->GetParent())); if (namespace_decl) m_die_to_decl_ctx[die] = (clang::DeclContext*)namespace_decl; return namespace_decl; } } break; default: break; } clang::DeclContext *decl_ctx; decl_ctx = GetClangDeclContextForDIEOffset (die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_specification, DW_INVALID_OFFSET)); if (decl_ctx) return decl_ctx; decl_ctx = GetClangDeclContextForDIEOffset (die->GetAttributeValueAsUnsigned(this, curr_cu, DW_AT_abstract_origin, DW_INVALID_OFFSET)); if (decl_ctx) return decl_ctx; die = die->GetParent(); } // Right now we have only one translation unit per module... if (m_clang_tu_decl == NULL) m_clang_tu_decl = GetClangASTContext().getASTContext()->getTranslationUnitDecl(); return m_clang_tu_decl; } // 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* curr_cu, const DWARFDebugInfoEntry *die, const ConstString &type_name ) { TypeSP type_sp; if (curr_cu == NULL || die == NULL || !type_name) return type_sp; if (!m_indexed) Index (); const dw_tag_t type_tag = die->Tag(); std::vector die_info_array; const size_t num_matches = m_type_index.Find (type_name, die_info_array); if (num_matches > 0) { DWARFCompileUnit* type_cu = NULL; DWARFCompileUnit* curr_cu = curr_cu; DWARFDebugInfo *info = DebugInfo(); for (size_t i=0; iGetCompileUnitAtIndex (die_info_array[i].cu_idx); if (type_cu != curr_cu) { type_cu->ExtractDIEsIfNeeded (false); curr_cu = type_cu; } DWARFDebugInfoEntry *type_die = type_cu->GetDIEAtIndexUnchecked (die_info_array[i].die_idx); if (type_die != die && type_die->Tag() == type_tag) { // Hold off on comparing parent DIE tags until // we know what happens with stuff in namespaces // for gcc and clang... //DWARFDebugInfoEntry *parent_die = die->GetParent(); //DWARFDebugInfoEntry *parent_type_die = type_die->GetParent(); //if (parent_die->Tag() == parent_type_die->Tag()) { Type *resolved_type = ResolveType (type_cu, type_die, false); if (resolved_type && resolved_type != DIE_IS_BEING_PARSED) { DEBUG_PRINTF ("resolved 0x%8.8x (cu 0x%8.8x) from %s to 0x%8.8x (cu 0x%8.8x)\n", die->GetOffset(), curr_cu->GetOffset(), m_obj_file->GetFileSpec().GetFilename().AsCString(), type_die->GetOffset(), type_cu->GetOffset()); m_die_to_type[die] = resolved_type; type_sp = GetTypeList()->FindType(resolved_type->GetID()); if (!type_sp) { DEBUG_PRINTF("unable to resolve type '%s' from DIE 0x%8.8x\n", type_name.GetCString(), die->GetOffset()); } break; } } } } } 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; AccessType accessibility = eAccessNone; if (die != NULL) { 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; 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: { // 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; iGetSupportFiles().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(); 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%8.8x: %s (\"%s\") type => 0x%8.8x\n", die->GetOffset(), DW_TAG_value_to_name(tag), type_name_cstr, encoding_uid); switch (tag) { default: break; 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 (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) { clang_type = ast.GetBuiltInType_objc_id(); resolve_state = Type::eResolveStateFull; } else if (type_name_const_str == g_objc_type_name_Class) { clang_type = ast.GetBuiltInType_objc_Class(); resolve_state = Type::eResolveStateFull; } else if (type_name_const_str == g_objc_type_name_selector) { clang_type = ast.GetBuiltInType_objc_selector(); resolve_state = Type::eResolveStateFull; } } type_sp.reset( new Type (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 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; iGetSupportFiles().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(); 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_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; } } } } DEBUG_PRINTF ("0x%8.8x: %s (\"%s\")\n", 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 (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... type_sp = FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); if (!type_sp) { // We weren't able to find a full declaration in // this DWARF, see if we have a declaration anywhere // else... if (m_debug_map_symfile) type_sp = m_debug_map_symfile->FindDefinitionTypeForDIE (dwarf_cu, die, type_name_const_str); } if (type_sp) { // 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_type_was_created = true; clang_type = ast.CreateRecordType (type_name_cstr, tag_decl_kind, GetClangDeclContextForDIE (dwarf_cu, die), 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. m_die_to_decl_ctx[die] = ClangASTContext::GetDeclContextForType (clang_type); type_sp.reset (new Type (die->GetOffset(), this, type_name_const_str, byte_size, NULL, LLDB_INVALID_UID, Type::eEncodingIsUID, &decl, clang_type, Type::eResolveStateForward)); m_die_to_type[die] = type_sp.get(); if (die->HasChildren() == false && is_forward_declaration == 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; } } 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; iGetSupportFiles().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(); 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%8.8x: %s (\"%s\")\n", 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 (decl, type_name_cstr, enumerator_clang_type); } else { enumerator_clang_type = ClangASTContext::GetEnumerationIntegerType (clang_type); assert (enumerator_clang_type != NULL); } m_die_to_decl_ctx[die] = ClangASTContext::GetDeclContextForType (clang_type); type_sp.reset( new Type (die->GetOffset(), this, type_name_const_str, byte_size, NULL, encoding_uid, Type::eEncodingIsUID, &decl, clang_type, Type::eResolveStateForward)); m_die_to_type[die] = type_sp.get(); // 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; } } 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; 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; iGetSupportFiles().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_external: if (form_value.Unsigned()) { if (storage == clang::SC_None) storage = clang::SC_Extern; else storage = clang::SC_PrivateExtern; } break; case DW_AT_allocated: case DW_AT_associated: case DW_AT_address_class: case DW_AT_artificial: 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_specification: 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_abstract_origin: case DW_AT_description: case DW_AT_sibling: break; } } } } DEBUG_PRINTF ("0x%8.8x: %s (\"%s\")\n", 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->GetClangLayoutType(); else return_clang_type = ast.GetBuiltInType_void(); std::vector function_param_types; std::vector function_param_decls; // Parse the function children for the parameters if (die->HasChildren()) { bool skip_artificial = true; ParseChildParameters (sc, type_sp, dwarf_cu, die, skip_artificial, 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) { bool type_handled = false; const DWARFDebugInfoEntry *parent_die = die->GetParent(); if (tag == DW_TAG_subprogram) { if (type_name_cstr[1] == '[' && (type_name_cstr[0] == '-' || type_name_cstr[0] == '+')) { // We need to find the DW_TAG_class_type or // DW_TAG_struct_type by name so we can add this // as a member function of the class. const char *class_name_start = type_name_cstr + 2; const char *class_name_end = ::strchr (class_name_start, ' '); SymbolContext empty_sc; clang_type_t class_opaque_type = NULL; if (class_name_start < class_name_end) { ConstString class_name (class_name_start, class_name_end - class_name_start); TypeList types; const uint32_t match_count = FindTypes (empty_sc, class_name, true, UINT32_MAX, types); if (match_count > 0) { for (uint32_t i=0; iGetClangForwardType(); if (ClangASTContext::IsObjCClassType (type_clang_forward_type)) { class_opaque_type = type_clang_forward_type; break; } } } } 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); type_handled = objc_method_decl != NULL; } } else if (parent_die->Tag() == DW_TAG_class_type || parent_die->Tag() == DW_TAG_structure_type) { // 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, parent_die); if (class_type) { clang_type_t class_opaque_type = class_type->GetClangForwardType(); if (ClangASTContext::IsCXXClassType (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; clang::CXXMethodDecl *cxx_method_decl; cxx_method_decl = ast.AddMethodToCXXRecordType (class_opaque_type, type_name_cstr, clang_type, accessibility, is_virtual, is_static, is_inline, is_explicit); type_handled = cxx_method_decl != NULL; } } } } if (!type_handled) { // We just have a function that isn't part of a class clang::FunctionDecl *function_decl = ast.CreateFunctionDeclaration (type_name_cstr, clang_type, storage, is_inline); // Add the decl to our DIE to decl context map assert (function_decl); m_die_to_decl_ctx[die] = function_decl; if (!function_param_decls.empty()) ast.SetFunctionParameters (function_decl, &function_param_decls.front(), function_param_decls.size()); } } type_sp.reset( new Type (die->GetOffset(), this, type_name_const_str, 0, NULL, LLDB_INVALID_UID, Type::eEncodingIsUID, &decl, clang_type, Type::eResolveStateFull)); m_die_to_type[die] = type_sp.get(); 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; iGetSupportFiles().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(); 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%8.8x: %s (\"%s\")\n", die->GetOffset(), DW_TAG_value_to_name(tag), type_name_cstr); Type *element_type = ResolveTypeUID(type_die_offset); if (element_type) { std::vector 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->GetClangType(); uint64_t array_element_bit_stride = byte_stride * 8 + bit_stride; uint64_t num_elements = 0; std::vector::const_reverse_iterator pos; std::vector::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 (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); m_die_to_type[die] = type_sp.get(); } } } 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; iGetClangForwardType(); 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 (die->GetOffset(), this, type_name_const_str, byte_size, NULL, LLDB_INVALID_UID, Type::eEncodingIsUID, NULL, clang_type, Type::eResolveStateForward)); m_die_to_type[die] = type_sp.get(); } 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(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); } // if (udt_sp.get()) // { // if (is_forward_declaration) // udt_sp->GetFlags().Set(UserDefType::flagIsForwardDefinition); // type_sp->SetUserDefinedType(udt_sp); // } if (type_sp.unique()) { // 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_list->FindType(type_ptr->GetID()); } } 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(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, false, true); } } 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); assert (func_lo_pc != DW_INVALID_ADDRESS); return ParseVariables(sc, dwarf_cu, func_lo_pc, function_die->GetFirstChild(), true, true); } 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); // 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 (); std::vector global_die_info_array; const size_t num_globals = m_global_index.FindAllEntriesForCompileUnitWithIndex (cu_idx, global_die_info_array); for (size_t idx=0; idxGetDIEAtIndexUnchecked(global_die_info_array[idx].die_idx), LLDB_INVALID_ADDRESS)); if (var_sp) { variables->AddVariableIfUnique (var_sp); ++vars_added; } } } 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(); 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; Type *var_type = NULL; DWARFExpression location; bool is_external = false; bool is_artificial = false; AccessType accessibility = eAccessNone; for (i=0; iGetSupportFiles().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: var_type = ResolveTypeUID(form_value.Reference(dwarf_cu)); break; case DW_AT_external: is_external = form_value.Unsigned() != 0; break; 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_const_value: 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()) { assert(var_type != DIE_IS_BEING_PARSED); ValueType scope = eValueTypeInvalid; const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(die); dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; if (tag == DW_TAG_formal_parameter) scope = eValueTypeVariableArgument; else if (is_external || parent_tag == DW_TAG_compile_unit) scope = eValueTypeVariableGlobal; else scope = eValueTypeVariableLocal; SymbolContextScope * symbol_context_scope = NULL; if (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(sc_parent_die->GetOffset()); if (symbol_context_scope == NULL) symbol_context_scope = sc.function; } assert(symbol_context_scope != NULL); var_sp.reset (new Variable(die->GetOffset(), name, mangled, var_type, scope, symbol_context_scope, &decl, location, is_external, is_artificial)); } } // 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; } 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; size_t vars_added = 0; const DWARFDebugInfoEntry *die = orig_die; const DWARFDebugInfoEntry *sc_parent_die = GetParentSymbolContextDIE(orig_die); dw_tag_t parent_tag = sc_parent_die ? sc_parent_die->Tag() : 0; VariableListSP variables; switch (parent_tag) { case DW_TAG_compile_unit: if (sc.comp_unit != NULL) { variables = sc.comp_unit->GetVariableList(false); if (variables.get() == NULL) { variables.reset(new VariableList()); sc.comp_unit->SetVariableList(variables); } } else { assert(!"Parent DIE was a compile unit, yet we don't have a valid compile unit in the symbol context..."); vars_added = 0; } 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(sc_parent_die->GetOffset()); assert (block != NULL); variables = block->GetVariableList(false, false); if (variables.get() == NULL) { variables.reset(new VariableList()); block->SetVariableList(variables); } } else { assert(!"Parent DIE was a function or block, yet we don't have a function in the symbol context..."); vars_added = 0; } break; default: assert(!"Didn't find appropriate parent DIE for variable list..."); break; } // We need to have a variable list at this point that we can add variables to assert(variables.get()); 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)) { VariableSP var_sp (ParseVariableDIE(sc, dwarf_cu, die, func_low_pc)); if (var_sp) { variables->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::GetPluginCommandHelp (const char *command, Stream *strm) { } Error SymbolFileDWARF::ExecutePluginCommand (Args &command, Stream *strm) { Error error; error.SetErrorString("No plug-in command are currently supported."); return error; } Log * SymbolFileDWARF::EnablePluginLogging (Stream *strm, Args &command) { return NULL; }