//===-- SymbolFileDWARFDwo.cpp ----------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "SymbolFileDWARFDwo.h" #include "lldb/Core/Section.h" #include "lldb/Expression/DWARFExpression.h" #include "lldb/Symbol/ObjectFile.h" #include "lldb/Utility/LLDBAssert.h" #include "DWARFUnit.h" #include "DWARFDebugInfo.h" using namespace lldb; using namespace lldb_private; SymbolFileDWARFDwo::SymbolFileDWARFDwo(ObjectFileSP objfile, DWARFUnit *dwarf_cu) : SymbolFileDWARF(objfile.get()), m_obj_file_sp(objfile), m_base_dwarf_cu(dwarf_cu) { SetID(((lldb::user_id_t)dwarf_cu->GetOffset()) << 32); } void SymbolFileDWARFDwo::LoadSectionData(lldb::SectionType sect_type, DWARFDataExtractor &data) { const SectionList *section_list = m_obj_file->GetSectionList(false /* update_module_section_list */); if (section_list) { SectionSP section_sp(section_list->FindSectionByType(sect_type, true)); if (section_sp) { // See if we memory mapped the DWARF segment? if (m_dwarf_data.GetByteSize()) { data.SetData(m_dwarf_data, section_sp->GetOffset(), section_sp->GetFileSize()); return; } if (m_obj_file->ReadSectionData(section_sp.get(), data) != 0) return; data.Clear(); } } SymbolFileDWARF::LoadSectionData(sect_type, data); } lldb::CompUnitSP SymbolFileDWARFDwo::ParseCompileUnit(DWARFUnit *dwarf_cu, uint32_t cu_idx) { assert(GetCompileUnit() == dwarf_cu && "SymbolFileDWARFDwo::ParseCompileUnit " "called with incompatible compile " "unit"); return GetBaseSymbolFile()->ParseCompileUnit(m_base_dwarf_cu, UINT32_MAX); } DWARFUnit *SymbolFileDWARFDwo::GetCompileUnit() { // Only dwo files with 1 compile unit is supported if (GetNumCompileUnits() == 1) return DebugInfo()->GetCompileUnitAtIndex(0); else return nullptr; } DWARFUnit * SymbolFileDWARFDwo::GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit) { return GetCompileUnit(); } SymbolFileDWARF::DIEToTypePtr &SymbolFileDWARFDwo::GetDIEToType() { return GetBaseSymbolFile()->GetDIEToType(); } SymbolFileDWARF::DIEToVariableSP &SymbolFileDWARFDwo::GetDIEToVariable() { return GetBaseSymbolFile()->GetDIEToVariable(); } SymbolFileDWARF::DIEToClangType & SymbolFileDWARFDwo::GetForwardDeclDieToClangType() { return GetBaseSymbolFile()->GetForwardDeclDieToClangType(); } SymbolFileDWARF::ClangTypeToDIE & SymbolFileDWARFDwo::GetForwardDeclClangTypeToDie() { return GetBaseSymbolFile()->GetForwardDeclClangTypeToDie(); } size_t SymbolFileDWARFDwo::GetObjCMethodDIEOffsets( lldb_private::ConstString class_name, DIEArray &method_die_offsets) { return GetBaseSymbolFile()->GetObjCMethodDIEOffsets( class_name, method_die_offsets); } UniqueDWARFASTTypeMap &SymbolFileDWARFDwo::GetUniqueDWARFASTTypeMap() { return GetBaseSymbolFile()->GetUniqueDWARFASTTypeMap(); } lldb::TypeSP SymbolFileDWARFDwo::FindDefinitionTypeForDWARFDeclContext( const DWARFDeclContext &die_decl_ctx) { return GetBaseSymbolFile()->FindDefinitionTypeForDWARFDeclContext( die_decl_ctx); } lldb::TypeSP SymbolFileDWARFDwo::FindCompleteObjCDefinitionTypeForDIE( const DWARFDIE &die, const lldb_private::ConstString &type_name, bool must_be_implementation) { return GetBaseSymbolFile()->FindCompleteObjCDefinitionTypeForDIE( die, type_name, must_be_implementation); } DWARFUnit *SymbolFileDWARFDwo::GetBaseCompileUnit() { return m_base_dwarf_cu; } const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_abbrev_data() { return GetCachedSectionData(eSectionTypeDWARFDebugAbbrevDwo, m_data_debug_abbrev); } const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_addr_data() { // For single file split dwarf case (when we have .dwo sections in a .o), // we do not want to use the .debug_addr section from .o file, // but want to get one from the final executable. // For regular split debug case, .dwo file does not contain the // .debug_addr, so we would always fall back to such lookup anyways. llvm::call_once(m_data_debug_addr.m_flag, [this] { SymbolFileDWARF::LoadSectionData(eSectionTypeDWARFDebugAddr, std::ref(m_data_debug_addr.m_data)); }); return m_data_debug_addr.m_data; } const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_info_data() { return GetCachedSectionData(eSectionTypeDWARFDebugInfoDwo, m_data_debug_info); } const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_str_data() { return GetCachedSectionData(eSectionTypeDWARFDebugStrDwo, m_data_debug_str); } const DWARFDataExtractor &SymbolFileDWARFDwo::get_debug_str_offsets_data() { return GetCachedSectionData(eSectionTypeDWARFDebugStrOffsetsDwo, m_data_debug_str_offsets); } SymbolFileDWARF *SymbolFileDWARFDwo::GetBaseSymbolFile() { return m_base_dwarf_cu->GetSymbolFileDWARF(); } DWARFExpression::LocationListFormat SymbolFileDWARFDwo::GetLocationListFormat() const { return DWARFExpression::SplitDwarfLocationList; } TypeSystem * SymbolFileDWARFDwo::GetTypeSystemForLanguage(LanguageType language) { return GetBaseSymbolFile()->GetTypeSystemForLanguage(language); } DWARFDIE SymbolFileDWARFDwo::GetDIE(const DIERef &die_ref) { lldbassert(m_base_dwarf_cu->GetOffset() == die_ref.cu_offset); return DebugInfo()->GetDIEForDIEOffset(die_ref.die_offset); }