| //===-- SymbolFileDWARFDwo.cpp --------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "SymbolFileDWARFDwo.h" |
| |
| #include "lldb/Core/Section.h" |
| #include "lldb/Expression/DWARFExpression.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Utility/LLDBAssert.h" |
| #include "llvm/Support/Casting.h" |
| |
| #include "DWARFCompileUnit.h" |
| #include "DWARFDebugInfo.h" |
| #include "DWARFUnit.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| char SymbolFileDWARFDwo::ID; |
| |
| SymbolFileDWARFDwo::SymbolFileDWARFDwo(SymbolFileDWARF &base_symbol_file, |
| ObjectFileSP objfile, uint32_t id) |
| : SymbolFileDWARF(objfile, objfile->GetSectionList( |
| /*update_module_section_list*/ false)), |
| m_base_symbol_file(base_symbol_file) { |
| SetID(user_id_t(id) << 32); |
| |
| // Parsing of the dwarf unit index is not thread-safe, so we need to prime it |
| // to enable subsequent concurrent lookups. |
| m_context.GetAsLLVM().getCUIndex(); |
| } |
| |
| DWARFCompileUnit *SymbolFileDWARFDwo::GetDWOCompileUnitForHash(uint64_t hash) { |
| if (const llvm::DWARFUnitIndex &index = m_context.GetAsLLVM().getCUIndex()) { |
| if (const llvm::DWARFUnitIndex::Entry *entry = index.getFromHash(hash)) { |
| if (auto *unit_contrib = entry->getContribution()) |
| return llvm::dyn_cast_or_null<DWARFCompileUnit>( |
| DebugInfo().GetUnitAtOffset(DIERef::Section::DebugInfo, |
| unit_contrib->Offset)); |
| } |
| return nullptr; |
| } |
| |
| DWARFCompileUnit *cu = FindSingleCompileUnit(); |
| if (!cu) |
| return nullptr; |
| if (hash != cu->GetDWOId()) |
| return nullptr; |
| return cu; |
| } |
| |
| DWARFCompileUnit *SymbolFileDWARFDwo::FindSingleCompileUnit() { |
| DWARFDebugInfo &debug_info = DebugInfo(); |
| |
| // Right now we only support dwo files with one compile unit. If we don't have |
| // type units, we can just check for the unit count. |
| if (!debug_info.ContainsTypeUnits() && debug_info.GetNumUnits() == 1) |
| return llvm::cast<DWARFCompileUnit>(debug_info.GetUnitAtIndex(0)); |
| |
| // Otherwise, we have to run through all units, and find the compile unit that |
| // way. |
| DWARFCompileUnit *cu = nullptr; |
| for (size_t i = 0; i < debug_info.GetNumUnits(); ++i) { |
| if (auto *candidate = |
| llvm::dyn_cast<DWARFCompileUnit>(debug_info.GetUnitAtIndex(i))) { |
| if (cu) |
| return nullptr; // More that one CU found. |
| cu = candidate; |
| } |
| } |
| return cu; |
| } |
| |
| 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(); |
| } |
| |
| void SymbolFileDWARFDwo::GetObjCMethods( |
| lldb_private::ConstString class_name, |
| llvm::function_ref<bool(DWARFDIE die)> callback) { |
| GetBaseSymbolFile().GetObjCMethods(class_name, callback); |
| } |
| |
| 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, lldb_private::ConstString type_name, |
| bool must_be_implementation) { |
| return GetBaseSymbolFile().FindCompleteObjCDefinitionTypeForDIE( |
| die, type_name, must_be_implementation); |
| } |
| |
| llvm::Expected<TypeSystem &> |
| SymbolFileDWARFDwo::GetTypeSystemForLanguage(LanguageType language) { |
| return GetBaseSymbolFile().GetTypeSystemForLanguage(language); |
| } |
| |
| DWARFDIE |
| SymbolFileDWARFDwo::GetDIE(const DIERef &die_ref) { |
| if (die_ref.dwo_num() == GetDwoNum()) |
| return DebugInfo().GetDIE(die_ref); |
| return GetBaseSymbolFile().GetDIE(die_ref); |
| } |