| //===-- DWARFContext.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 "DWARFContext.h" |
| |
| #include "lldb/Core/Section.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static DWARFDataExtractor LoadSection(SectionList *section_list, |
| SectionType section_type) { |
| if (!section_list) |
| return DWARFDataExtractor(); |
| |
| auto section_sp = section_list->FindSectionByType(section_type, true); |
| if (!section_sp) |
| return DWARFDataExtractor(); |
| |
| DWARFDataExtractor data; |
| section_sp->GetSectionData(data); |
| return data; |
| } |
| |
| const DWARFDataExtractor & |
| DWARFContext::LoadOrGetSection(llvm::Optional<SectionType> main_section_type, |
| llvm::Optional<SectionType> dwo_section_type, |
| SectionData &data) { |
| llvm::call_once(data.flag, [&] { |
| if (dwo_section_type && isDwo()) |
| data.data = LoadSection(m_dwo_section_list, *dwo_section_type); |
| else if (main_section_type) |
| data.data = LoadSection(m_main_section_list, *main_section_type); |
| }); |
| return data.data; |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadCuIndexData() { |
| return LoadOrGetSection(llvm::None, eSectionTypeDWARFDebugCuIndex, |
| m_data_debug_cu_index); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadTuIndexData() { |
| return LoadOrGetSection(llvm::None, eSectionTypeDWARFDebugTuIndex, |
| m_data_debug_tu_index); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadAbbrevData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugAbbrev, |
| eSectionTypeDWARFDebugAbbrevDwo, m_data_debug_abbrev); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadArangesData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugAranges, llvm::None, |
| m_data_debug_aranges); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadAddrData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugAddr, llvm::None, |
| m_data_debug_addr); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadDebugInfoData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugInfo, |
| eSectionTypeDWARFDebugInfoDwo, m_data_debug_info); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadLineData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugLine, llvm::None, |
| m_data_debug_line); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadLineStrData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugLineStr, llvm::None, |
| m_data_debug_line_str); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadLocData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugLoc, |
| eSectionTypeDWARFDebugLocDwo, m_data_debug_loc); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadLocListsData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugLocLists, |
| eSectionTypeDWARFDebugLocListsDwo, |
| m_data_debug_loclists); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadMacroData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugMacro, llvm::None, |
| m_data_debug_macro); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadRangesData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugRanges, llvm::None, |
| m_data_debug_ranges); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadRngListsData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugRngLists, |
| eSectionTypeDWARFDebugRngListsDwo, |
| m_data_debug_rnglists); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadStrData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugStr, |
| eSectionTypeDWARFDebugStrDwo, m_data_debug_str); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadStrOffsetsData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugStrOffsets, |
| eSectionTypeDWARFDebugStrOffsetsDwo, |
| m_data_debug_str_offsets); |
| } |
| |
| const DWARFDataExtractor &DWARFContext::getOrLoadDebugTypesData() { |
| return LoadOrGetSection(eSectionTypeDWARFDebugTypes, |
| eSectionTypeDWARFDebugTypesDwo, m_data_debug_types); |
| } |
| |
| llvm::DWARFContext &DWARFContext::GetAsLLVM() { |
| if (!m_llvm_context) { |
| llvm::StringMap<std::unique_ptr<llvm::MemoryBuffer>> section_map; |
| uint8_t addr_size = 0; |
| auto AddSection = [&](llvm::StringRef name, DWARFDataExtractor data) { |
| // Set the address size the first time we see it. |
| if (addr_size == 0) |
| addr_size = data.GetAddressByteSize(); |
| |
| section_map.try_emplace( |
| name, llvm::MemoryBuffer::getMemBuffer(toStringRef(data.GetData()), |
| name, false)); |
| }; |
| |
| AddSection("debug_line_str", getOrLoadLineStrData()); |
| AddSection("debug_cu_index", getOrLoadCuIndexData()); |
| AddSection("debug_tu_index", getOrLoadTuIndexData()); |
| |
| m_llvm_context = llvm::DWARFContext::create(section_map, addr_size); |
| } |
| return *m_llvm_context; |
| } |