llvm/lib/ObjectYAML/DWARFYAML.cpp - llvm-project - Git at Google

 //===- DWARFYAML.cpp - DWARF YAMLIO implementation ------------------------===//
 //
 // 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
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines classes for handling the YAML representation of DWARF Debug
 // Info.
 //
 //===----------------------------------------------------------------------===//

 #include "llvm/ObjectYAML/DWARFYAML.h"
 #include "llvm/BinaryFormat/Dwarf.h"
 #include "llvm/Support/Errc.h"
 #include "llvm/Support/Error.h"

 namespace llvm {

 bool DWARFYAML::Data::isEmpty() const {
   return getNonEmptySectionNames().empty();
 }

 SetVector<StringRef> DWARFYAML::Data::getNonEmptySectionNames() const {
   SetVector<StringRef> SecNames;
   if (DebugStrings)
     SecNames.insert("debug_str");
   if (DebugAranges)
     SecNames.insert("debug_aranges");
   if (DebugRanges)
     SecNames.insert("debug_ranges");
   if (!DebugLines.empty())
     SecNames.insert("debug_line");
   if (DebugAddr)
     SecNames.insert("debug_addr");
   if (!DebugAbbrev.empty())
     SecNames.insert("debug_abbrev");
   if (!CompileUnits.empty())
     SecNames.insert("debug_info");
   if (PubNames)
     SecNames.insert("debug_pubnames");
   if (PubTypes)
     SecNames.insert("debug_pubtypes");
   if (GNUPubNames)
     SecNames.insert("debug_gnu_pubnames");
   if (GNUPubTypes)
     SecNames.insert("debug_gnu_pubtypes");
   if (DebugStrOffsets)
     SecNames.insert("debug_str_offsets");
   if (DebugRnglists)
     SecNames.insert("debug_rnglists");
   if (DebugLoclists)
     SecNames.insert("debug_loclists");
   return SecNames;
 }

 Expected<DWARFYAML::Data::AbbrevTableInfo>
 DWARFYAML::Data::getAbbrevTableInfoByID(uint64_t ID) const {
   if (AbbrevTableInfoMap.empty()) {
     uint64_t AbbrevTableOffset = 0;
     for (auto &AbbrevTable : enumerate(DebugAbbrev)) {
       // If the abbrev table's ID isn't specified, we use the index as its ID.
       uint64_t AbbrevTableID =
           AbbrevTable.value().ID.getValueOr(AbbrevTable.index());
       auto It = AbbrevTableInfoMap.insert(
           {AbbrevTableID, AbbrevTableInfo{/*Index=*/AbbrevTable.index(),
                                           /*Offset=*/AbbrevTableOffset}});
       if (!It.second)
         return createStringError(
             errc::invalid_argument,
             "the ID (%" PRIu64 ") of abbrev table with index %zu has been used "
             "by abbrev table with index %" PRIu64,
             AbbrevTableID, AbbrevTable.index(), It.first->second.Index);

       AbbrevTableOffset +=
           getAbbrevTableContentByIndex(AbbrevTable.index()).size();
     }
   }

   auto It = AbbrevTableInfoMap.find(ID);
   if (It == AbbrevTableInfoMap.end())
     return createStringError(errc::invalid_argument,
                              "cannot find abbrev table whose ID is %" PRIu64,
                              ID);
   return It->second;
 }

 namespace yaml {

 void MappingTraits<DWARFYAML::Data>::mapping(IO &IO, DWARFYAML::Data &DWARF) {
   void *OldContext = IO.getContext();
   DWARFYAML::DWARFContext DWARFCtx;
   IO.setContext(&DWARFCtx);
   IO.mapOptional("debug_str", DWARF.DebugStrings);
   IO.mapOptional("debug_abbrev", DWARF.DebugAbbrev);
   IO.mapOptional("debug_aranges", DWARF.DebugAranges);
   IO.mapOptional("debug_ranges", DWARF.DebugRanges);
   IO.mapOptional("debug_pubnames", DWARF.PubNames);
   IO.mapOptional("debug_pubtypes", DWARF.PubTypes);
   DWARFCtx.IsGNUPubSec = true;
   IO.mapOptional("debug_gnu_pubnames", DWARF.GNUPubNames);
   IO.mapOptional("debug_gnu_pubtypes", DWARF.GNUPubTypes);
   IO.mapOptional("debug_info", DWARF.CompileUnits);
   IO.mapOptional("debug_line", DWARF.DebugLines);
   IO.mapOptional("debug_addr", DWARF.DebugAddr);
   IO.mapOptional("debug_str_offsets", DWARF.DebugStrOffsets);
   IO.mapOptional("debug_rnglists", DWARF.DebugRnglists);
   IO.mapOptional("debug_loclists", DWARF.DebugLoclists);
   IO.setContext(OldContext);
 }

 void MappingTraits<DWARFYAML::AbbrevTable>::mapping(
     IO &IO, DWARFYAML::AbbrevTable &AbbrevTable) {
   IO.mapOptional("ID", AbbrevTable.ID);
   IO.mapOptional("Table", AbbrevTable.Table);
 }

 void MappingTraits<DWARFYAML::Abbrev>::mapping(IO &IO,
                                                DWARFYAML::Abbrev &Abbrev) {
   IO.mapOptional("Code", Abbrev.Code);
   IO.mapRequired("Tag", Abbrev.Tag);
   IO.mapRequired("Children", Abbrev.Children);
   IO.mapOptional("Attributes", Abbrev.Attributes);
 }

 void MappingTraits<DWARFYAML::AttributeAbbrev>::mapping(
     IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev) {
   IO.mapRequired("Attribute", AttAbbrev.Attribute);
   IO.mapRequired("Form", AttAbbrev.Form);
   if(AttAbbrev.Form == dwarf::DW_FORM_implicit_const)
     IO.mapRequired("Value", AttAbbrev.Value);
 }

 void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(
     IO &IO, DWARFYAML::ARangeDescriptor &Descriptor) {
   IO.mapRequired("Address", Descriptor.Address);
   IO.mapRequired("Length", Descriptor.Length);
 }

 void MappingTraits<DWARFYAML::ARange>::mapping(IO &IO,
                                                DWARFYAML::ARange &ARange) {
   IO.mapOptional("Format", ARange.Format, dwarf::DWARF32);
   IO.mapOptional("Length", ARange.Length);
   IO.mapRequired("Version", ARange.Version);
   IO.mapRequired("CuOffset", ARange.CuOffset);
   IO.mapOptional("AddressSize", ARange.AddrSize);
   IO.mapOptional("SegmentSelectorSize", ARange.SegSize, 0);
   IO.mapOptional("Descriptors", ARange.Descriptors);
 }

 void MappingTraits<DWARFYAML::RangeEntry>::mapping(
     IO &IO, DWARFYAML::RangeEntry &Descriptor) {
   IO.mapRequired("LowOffset", Descriptor.LowOffset);
   IO.mapRequired("HighOffset", Descriptor.HighOffset);
 }

 void MappingTraits<DWARFYAML::Ranges>::mapping(IO &IO,
                                                DWARFYAML::Ranges &DebugRanges) {
   IO.mapOptional("Offset", DebugRanges.Offset);
   IO.mapOptional("AddrSize", DebugRanges.AddrSize);
   IO.mapRequired("Entries", DebugRanges.Entries);
 }

 void MappingTraits<DWARFYAML::PubEntry>::mapping(IO &IO,
                                                  DWARFYAML::PubEntry &Entry) {
   IO.mapRequired("DieOffset", Entry.DieOffset);
   if (static_cast<DWARFYAML::DWARFContext *>(IO.getContext())->IsGNUPubSec)
     IO.mapRequired("Descriptor", Entry.Descriptor);
   IO.mapRequired("Name", Entry.Name);
 }

 void MappingTraits<DWARFYAML::PubSection>::mapping(
     IO &IO, DWARFYAML::PubSection &Section) {
   IO.mapOptional("Format", Section.Format, dwarf::DWARF32);
   IO.mapRequired("Length", Section.Length);
   IO.mapRequired("Version", Section.Version);
   IO.mapRequired("UnitOffset", Section.UnitOffset);
   IO.mapRequired("UnitSize", Section.UnitSize);
   IO.mapRequired("Entries", Section.Entries);
 }

 void MappingTraits<DWARFYAML::Unit>::mapping(IO &IO, DWARFYAML::Unit &Unit) {
   IO.mapOptional("Format", Unit.Format, dwarf::DWARF32);
   IO.mapOptional("Length", Unit.Length);
   IO.mapRequired("Version", Unit.Version);
   if (Unit.Version >= 5)
     IO.mapRequired("UnitType", Unit.Type);
   IO.mapOptional("AbbrevTableID", Unit.AbbrevTableID);
   IO.mapOptional("AbbrOffset", Unit.AbbrOffset);
   IO.mapOptional("AddrSize", Unit.AddrSize);
   IO.mapOptional("Entries", Unit.Entries);
 }

 void MappingTraits<DWARFYAML::Entry>::mapping(IO &IO, DWARFYAML::Entry &Entry) {
   IO.mapRequired("AbbrCode", Entry.AbbrCode);
   IO.mapOptional("Values", Entry.Values);
 }

 void MappingTraits<DWARFYAML::FormValue>::mapping(
     IO &IO, DWARFYAML::FormValue &FormValue) {
   IO.mapOptional("Value", FormValue.Value);
   if (!FormValue.CStr.empty() || !IO.outputting())
     IO.mapOptional("CStr", FormValue.CStr);
   if (!FormValue.BlockData.empty() || !IO.outputting())
     IO.mapOptional("BlockData", FormValue.BlockData);
 }

 void MappingTraits<DWARFYAML::File>::mapping(IO &IO, DWARFYAML::File &File) {
   IO.mapRequired("Name", File.Name);
   IO.mapRequired("DirIdx", File.DirIdx);
   IO.mapRequired("ModTime", File.ModTime);
   IO.mapRequired("Length", File.Length);
 }

 void MappingTraits<DWARFYAML::LineTableOpcode>::mapping(
     IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode) {
   IO.mapRequired("Opcode", LineTableOpcode.Opcode);
   if (LineTableOpcode.Opcode == dwarf::DW_LNS_extended_op) {
     IO.mapOptional("ExtLen", LineTableOpcode.ExtLen);
     IO.mapRequired("SubOpcode", LineTableOpcode.SubOpcode);
   }

   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
     IO.mapOptional("UnknownOpcodeData", LineTableOpcode.UnknownOpcodeData);
   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
     IO.mapOptional("StandardOpcodeData", LineTableOpcode.StandardOpcodeData);
   if (!LineTableOpcode.FileEntry.Name.empty() || !IO.outputting())
     IO.mapOptional("FileEntry", LineTableOpcode.FileEntry);
   if (LineTableOpcode.Opcode == dwarf::DW_LNS_advance_line || !IO.outputting())
     IO.mapOptional("SData", LineTableOpcode.SData);
   IO.mapOptional("Data", LineTableOpcode.Data);
 }

 void MappingTraits<DWARFYAML::LineTable>::mapping(
     IO &IO, DWARFYAML::LineTable &LineTable) {
   IO.mapOptional("Format", LineTable.Format, dwarf::DWARF32);
   IO.mapOptional("Length", LineTable.Length);
   IO.mapRequired("Version", LineTable.Version);
   IO.mapOptional("PrologueLength", LineTable.PrologueLength);
   IO.mapRequired("MinInstLength", LineTable.MinInstLength);
   if(LineTable.Version >= 4)
     IO.mapRequired("MaxOpsPerInst", LineTable.MaxOpsPerInst);
   IO.mapRequired("DefaultIsStmt", LineTable.DefaultIsStmt);
   IO.mapRequired("LineBase", LineTable.LineBase);
   IO.mapRequired("LineRange", LineTable.LineRange);
   IO.mapOptional("OpcodeBase", LineTable.OpcodeBase);
   IO.mapOptional("StandardOpcodeLengths", LineTable.StandardOpcodeLengths);
   IO.mapOptional("IncludeDirs", LineTable.IncludeDirs);
   IO.mapOptional("Files", LineTable.Files);
   IO.mapOptional("Opcodes", LineTable.Opcodes);
 }

 void MappingTraits<DWARFYAML::SegAddrPair>::mapping(
     IO &IO, DWARFYAML::SegAddrPair &SegAddrPair) {
   IO.mapOptional("Segment", SegAddrPair.Segment, 0);
   IO.mapOptional("Address", SegAddrPair.Address, 0);
 }

 void MappingTraits<DWARFYAML::AddrTableEntry>::mapping(
     IO &IO, DWARFYAML::AddrTableEntry &AddrTable) {
   IO.mapOptional("Format", AddrTable.Format, dwarf::DWARF32);
   IO.mapOptional("Length", AddrTable.Length);
   IO.mapRequired("Version", AddrTable.Version);
   IO.mapOptional("AddressSize", AddrTable.AddrSize);
   IO.mapOptional("SegmentSelectorSize", AddrTable.SegSelectorSize, 0);
   IO.mapOptional("Entries", AddrTable.SegAddrPairs);
 }

 void MappingTraits<DWARFYAML::StringOffsetsTable>::mapping(
     IO &IO, DWARFYAML::StringOffsetsTable &StrOffsetsTable) {
   IO.mapOptional("Format", StrOffsetsTable.Format, dwarf::DWARF32);
   IO.mapOptional("Length", StrOffsetsTable.Length);
   IO.mapOptional("Version", StrOffsetsTable.Version, 5);
   IO.mapOptional("Padding", StrOffsetsTable.Padding, 0);
   IO.mapOptional("Offsets", StrOffsetsTable.Offsets);
 }

 void MappingTraits<DWARFYAML::DWARFOperation>::mapping(
     IO &IO, DWARFYAML::DWARFOperation &DWARFOperation) {
   IO.mapRequired("Operator", DWARFOperation.Operator);
   IO.mapOptional("Values", DWARFOperation.Values);
 }

 void MappingTraits<DWARFYAML::RnglistEntry>::mapping(
     IO &IO, DWARFYAML::RnglistEntry &RnglistEntry) {
   IO.mapRequired("Operator", RnglistEntry.Operator);
   IO.mapOptional("Values", RnglistEntry.Values);
 }

 void MappingTraits<DWARFYAML::LoclistEntry>::mapping(
     IO &IO, DWARFYAML::LoclistEntry &LoclistEntry) {
   IO.mapRequired("Operator", LoclistEntry.Operator);
   IO.mapOptional("Values", LoclistEntry.Values);
   IO.mapOptional("DescriptionsLength", LoclistEntry.DescriptionsLength);
   IO.mapOptional("Descriptions", LoclistEntry.Descriptions);
 }

 template <typename EntryType>
 void MappingTraits<DWARFYAML::ListEntries<EntryType>>::mapping(
     IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
   IO.mapOptional("Entries", ListEntries.Entries);
   IO.mapOptional("Content", ListEntries.Content);
 }

 template <typename EntryType>
 std::string MappingTraits<DWARFYAML::ListEntries<EntryType>>::validate(
     IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
   if (ListEntries.Entries && ListEntries.Content)
     return "Entries and Content can't be used together";
   return "";
 }

 template <typename EntryType>
 void MappingTraits<DWARFYAML::ListTable<EntryType>>::mapping(
     IO &IO, DWARFYAML::ListTable<EntryType> &ListTable) {
   IO.mapOptional("Format", ListTable.Format, dwarf::DWARF32);
   IO.mapOptional("Length", ListTable.Length);
   IO.mapOptional("Version", ListTable.Version, 5);
   IO.mapOptional("AddressSize", ListTable.AddrSize);
   IO.mapOptional("SegmentSelectorSize", ListTable.SegSelectorSize, 0);
   IO.mapOptional("OffsetEntryCount", ListTable.OffsetEntryCount);
   IO.mapOptional("Offsets", ListTable.Offsets);
   IO.mapOptional("Lists", ListTable.Lists);
 }

 } // end namespace yaml

 } // end namespace llvm
	//===- DWARFYAML.cpp - DWARF YAMLIO implementation ------------------------===//
	//
	// 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
	//
	//===----------------------------------------------------------------------===//
	//
	// This file defines classes for handling the YAML representation of DWARF Debug
	// Info.
	//
	//===----------------------------------------------------------------------===//

	#include "llvm/ObjectYAML/DWARFYAML.h"
	#include "llvm/BinaryFormat/Dwarf.h"
	#include "llvm/Support/Errc.h"
	#include "llvm/Support/Error.h"

	namespace llvm {

	bool DWARFYAML::Data::isEmpty() const {
	return getNonEmptySectionNames().empty();
	}

	SetVector<StringRef> DWARFYAML::Data::getNonEmptySectionNames() const {
	SetVector<StringRef> SecNames;
	if (DebugStrings)
	SecNames.insert("debug_str");
	if (DebugAranges)
	SecNames.insert("debug_aranges");
	if (DebugRanges)
	SecNames.insert("debug_ranges");
	if (!DebugLines.empty())
	SecNames.insert("debug_line");
	if (DebugAddr)
	SecNames.insert("debug_addr");
	if (!DebugAbbrev.empty())
	SecNames.insert("debug_abbrev");
	if (!CompileUnits.empty())
	SecNames.insert("debug_info");
	if (PubNames)
	SecNames.insert("debug_pubnames");
	if (PubTypes)
	SecNames.insert("debug_pubtypes");
	if (GNUPubNames)
	SecNames.insert("debug_gnu_pubnames");
	if (GNUPubTypes)
	SecNames.insert("debug_gnu_pubtypes");
	if (DebugStrOffsets)
	SecNames.insert("debug_str_offsets");
	if (DebugRnglists)
	SecNames.insert("debug_rnglists");
	if (DebugLoclists)
	SecNames.insert("debug_loclists");
	return SecNames;
	}

	Expected<DWARFYAML::Data::AbbrevTableInfo>
	DWARFYAML::Data::getAbbrevTableInfoByID(uint64_t ID) const {
	if (AbbrevTableInfoMap.empty()) {
	uint64_t AbbrevTableOffset = 0;
	for (auto &AbbrevTable : enumerate(DebugAbbrev)) {
	// If the abbrev table's ID isn't specified, we use the index as its ID.
	uint64_t AbbrevTableID =
	AbbrevTable.value().ID.getValueOr(AbbrevTable.index());
	auto It = AbbrevTableInfoMap.insert(
	{AbbrevTableID, AbbrevTableInfo{/Index=/AbbrevTable.index(),
	/Offset=/AbbrevTableOffset}});
	if (!It.second)
	return createStringError(
	errc::invalid_argument,
	"the ID (%" PRIu64 ") of abbrev table with index %zu has been used "
	"by abbrev table with index %" PRIu64,
	AbbrevTableID, AbbrevTable.index(), It.first->second.Index);

	AbbrevTableOffset +=
	getAbbrevTableContentByIndex(AbbrevTable.index()).size();
	}
	}

	auto It = AbbrevTableInfoMap.find(ID);
	if (It == AbbrevTableInfoMap.end())
	return createStringError(errc::invalid_argument,
	"cannot find abbrev table whose ID is %" PRIu64,
	ID);
	return It->second;
	}

	namespace yaml {

	void MappingTraits<DWARFYAML::Data>::mapping(IO &IO, DWARFYAML::Data &DWARF) {
	void *OldContext = IO.getContext();
	DWARFYAML::DWARFContext DWARFCtx;
	IO.setContext(&DWARFCtx);
	IO.mapOptional("debug_str", DWARF.DebugStrings);
	IO.mapOptional("debug_abbrev", DWARF.DebugAbbrev);
	IO.mapOptional("debug_aranges", DWARF.DebugAranges);
	IO.mapOptional("debug_ranges", DWARF.DebugRanges);
	IO.mapOptional("debug_pubnames", DWARF.PubNames);
	IO.mapOptional("debug_pubtypes", DWARF.PubTypes);
	DWARFCtx.IsGNUPubSec = true;
	IO.mapOptional("debug_gnu_pubnames", DWARF.GNUPubNames);
	IO.mapOptional("debug_gnu_pubtypes", DWARF.GNUPubTypes);
	IO.mapOptional("debug_info", DWARF.CompileUnits);
	IO.mapOptional("debug_line", DWARF.DebugLines);
	IO.mapOptional("debug_addr", DWARF.DebugAddr);
	IO.mapOptional("debug_str_offsets", DWARF.DebugStrOffsets);
	IO.mapOptional("debug_rnglists", DWARF.DebugRnglists);
	IO.mapOptional("debug_loclists", DWARF.DebugLoclists);
	IO.setContext(OldContext);
	}

	void MappingTraits<DWARFYAML::AbbrevTable>::mapping(
	IO &IO, DWARFYAML::AbbrevTable &AbbrevTable) {
	IO.mapOptional("ID", AbbrevTable.ID);
	IO.mapOptional("Table", AbbrevTable.Table);
	}

	void MappingTraits<DWARFYAML::Abbrev>::mapping(IO &IO,
	DWARFYAML::Abbrev &Abbrev) {
	IO.mapOptional("Code", Abbrev.Code);
	IO.mapRequired("Tag", Abbrev.Tag);
	IO.mapRequired("Children", Abbrev.Children);
	IO.mapOptional("Attributes", Abbrev.Attributes);
	}

	void MappingTraits<DWARFYAML::AttributeAbbrev>::mapping(
	IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev) {
	IO.mapRequired("Attribute", AttAbbrev.Attribute);
	IO.mapRequired("Form", AttAbbrev.Form);
	if(AttAbbrev.Form == dwarf::DW_FORM_implicit_const)
	IO.mapRequired("Value", AttAbbrev.Value);
	}

	void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(
	IO &IO, DWARFYAML::ARangeDescriptor &Descriptor) {
	IO.mapRequired("Address", Descriptor.Address);
	IO.mapRequired("Length", Descriptor.Length);
	}

	void MappingTraits<DWARFYAML::ARange>::mapping(IO &IO,
	DWARFYAML::ARange &ARange) {
	IO.mapOptional("Format", ARange.Format, dwarf::DWARF32);
	IO.mapOptional("Length", ARange.Length);
	IO.mapRequired("Version", ARange.Version);
	IO.mapRequired("CuOffset", ARange.CuOffset);
	IO.mapOptional("AddressSize", ARange.AddrSize);
	IO.mapOptional("SegmentSelectorSize", ARange.SegSize, 0);
	IO.mapOptional("Descriptors", ARange.Descriptors);
	}

	void MappingTraits<DWARFYAML::RangeEntry>::mapping(
	IO &IO, DWARFYAML::RangeEntry &Descriptor) {
	IO.mapRequired("LowOffset", Descriptor.LowOffset);
	IO.mapRequired("HighOffset", Descriptor.HighOffset);
	}

	void MappingTraits<DWARFYAML::Ranges>::mapping(IO &IO,
	DWARFYAML::Ranges &DebugRanges) {
	IO.mapOptional("Offset", DebugRanges.Offset);
	IO.mapOptional("AddrSize", DebugRanges.AddrSize);
	IO.mapRequired("Entries", DebugRanges.Entries);
	}

	void MappingTraits<DWARFYAML::PubEntry>::mapping(IO &IO,
	DWARFYAML::PubEntry &Entry) {
	IO.mapRequired("DieOffset", Entry.DieOffset);
	if (static_cast<DWARFYAML::DWARFContext *>(IO.getContext())->IsGNUPubSec)
	IO.mapRequired("Descriptor", Entry.Descriptor);
	IO.mapRequired("Name", Entry.Name);
	}

	void MappingTraits<DWARFYAML::PubSection>::mapping(
	IO &IO, DWARFYAML::PubSection &Section) {
	IO.mapOptional("Format", Section.Format, dwarf::DWARF32);
	IO.mapRequired("Length", Section.Length);
	IO.mapRequired("Version", Section.Version);
	IO.mapRequired("UnitOffset", Section.UnitOffset);
	IO.mapRequired("UnitSize", Section.UnitSize);
	IO.mapRequired("Entries", Section.Entries);
	}

	void MappingTraits<DWARFYAML::Unit>::mapping(IO &IO, DWARFYAML::Unit &Unit) {
	IO.mapOptional("Format", Unit.Format, dwarf::DWARF32);
	IO.mapOptional("Length", Unit.Length);
	IO.mapRequired("Version", Unit.Version);
	if (Unit.Version >= 5)
	IO.mapRequired("UnitType", Unit.Type);
	IO.mapOptional("AbbrevTableID", Unit.AbbrevTableID);
	IO.mapOptional("AbbrOffset", Unit.AbbrOffset);
	IO.mapOptional("AddrSize", Unit.AddrSize);
	IO.mapOptional("Entries", Unit.Entries);
	}

	void MappingTraits<DWARFYAML::Entry>::mapping(IO &IO, DWARFYAML::Entry &Entry) {
	IO.mapRequired("AbbrCode", Entry.AbbrCode);
	IO.mapOptional("Values", Entry.Values);
	}

	void MappingTraits<DWARFYAML::FormValue>::mapping(
	IO &IO, DWARFYAML::FormValue &FormValue) {
	IO.mapOptional("Value", FormValue.Value);
	if (!FormValue.CStr.empty() \|\| !IO.outputting())
	IO.mapOptional("CStr", FormValue.CStr);
	if (!FormValue.BlockData.empty() \|\| !IO.outputting())
	IO.mapOptional("BlockData", FormValue.BlockData);
	}

	void MappingTraits<DWARFYAML::File>::mapping(IO &IO, DWARFYAML::File &File) {
	IO.mapRequired("Name", File.Name);
	IO.mapRequired("DirIdx", File.DirIdx);
	IO.mapRequired("ModTime", File.ModTime);
	IO.mapRequired("Length", File.Length);
	}

	void MappingTraits<DWARFYAML::LineTableOpcode>::mapping(
	IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode) {
	IO.mapRequired("Opcode", LineTableOpcode.Opcode);
	if (LineTableOpcode.Opcode == dwarf::DW_LNS_extended_op) {
	IO.mapOptional("ExtLen", LineTableOpcode.ExtLen);
	IO.mapRequired("SubOpcode", LineTableOpcode.SubOpcode);
	}

	if (!LineTableOpcode.UnknownOpcodeData.empty() \|\| !IO.outputting())
	IO.mapOptional("UnknownOpcodeData", LineTableOpcode.UnknownOpcodeData);
	if (!LineTableOpcode.UnknownOpcodeData.empty() \|\| !IO.outputting())
	IO.mapOptional("StandardOpcodeData", LineTableOpcode.StandardOpcodeData);
	if (!LineTableOpcode.FileEntry.Name.empty() \|\| !IO.outputting())
	IO.mapOptional("FileEntry", LineTableOpcode.FileEntry);
	if (LineTableOpcode.Opcode == dwarf::DW_LNS_advance_line \|\| !IO.outputting())
	IO.mapOptional("SData", LineTableOpcode.SData);
	IO.mapOptional("Data", LineTableOpcode.Data);
	}

	void MappingTraits<DWARFYAML::LineTable>::mapping(
	IO &IO, DWARFYAML::LineTable &LineTable) {
	IO.mapOptional("Format", LineTable.Format, dwarf::DWARF32);
	IO.mapOptional("Length", LineTable.Length);
	IO.mapRequired("Version", LineTable.Version);
	IO.mapOptional("PrologueLength", LineTable.PrologueLength);
	IO.mapRequired("MinInstLength", LineTable.MinInstLength);
	if(LineTable.Version >= 4)
	IO.mapRequired("MaxOpsPerInst", LineTable.MaxOpsPerInst);
	IO.mapRequired("DefaultIsStmt", LineTable.DefaultIsStmt);
	IO.mapRequired("LineBase", LineTable.LineBase);
	IO.mapRequired("LineRange", LineTable.LineRange);
	IO.mapOptional("OpcodeBase", LineTable.OpcodeBase);
	IO.mapOptional("StandardOpcodeLengths", LineTable.StandardOpcodeLengths);
	IO.mapOptional("IncludeDirs", LineTable.IncludeDirs);
	IO.mapOptional("Files", LineTable.Files);
	IO.mapOptional("Opcodes", LineTable.Opcodes);
	}

	void MappingTraits<DWARFYAML::SegAddrPair>::mapping(
	IO &IO, DWARFYAML::SegAddrPair &SegAddrPair) {
	IO.mapOptional("Segment", SegAddrPair.Segment, 0);
	IO.mapOptional("Address", SegAddrPair.Address, 0);
	}

	void MappingTraits<DWARFYAML::AddrTableEntry>::mapping(
	IO &IO, DWARFYAML::AddrTableEntry &AddrTable) {
	IO.mapOptional("Format", AddrTable.Format, dwarf::DWARF32);
	IO.mapOptional("Length", AddrTable.Length);
	IO.mapRequired("Version", AddrTable.Version);
	IO.mapOptional("AddressSize", AddrTable.AddrSize);
	IO.mapOptional("SegmentSelectorSize", AddrTable.SegSelectorSize, 0);
	IO.mapOptional("Entries", AddrTable.SegAddrPairs);
	}

	void MappingTraits<DWARFYAML::StringOffsetsTable>::mapping(
	IO &IO, DWARFYAML::StringOffsetsTable &StrOffsetsTable) {
	IO.mapOptional("Format", StrOffsetsTable.Format, dwarf::DWARF32);
	IO.mapOptional("Length", StrOffsetsTable.Length);
	IO.mapOptional("Version", StrOffsetsTable.Version, 5);
	IO.mapOptional("Padding", StrOffsetsTable.Padding, 0);
	IO.mapOptional("Offsets", StrOffsetsTable.Offsets);
	}

	void MappingTraits<DWARFYAML::DWARFOperation>::mapping(
	IO &IO, DWARFYAML::DWARFOperation &DWARFOperation) {
	IO.mapRequired("Operator", DWARFOperation.Operator);
	IO.mapOptional("Values", DWARFOperation.Values);
	}

	void MappingTraits<DWARFYAML::RnglistEntry>::mapping(
	IO &IO, DWARFYAML::RnglistEntry &RnglistEntry) {
	IO.mapRequired("Operator", RnglistEntry.Operator);
	IO.mapOptional("Values", RnglistEntry.Values);
	}

	void MappingTraits<DWARFYAML::LoclistEntry>::mapping(
	IO &IO, DWARFYAML::LoclistEntry &LoclistEntry) {
	IO.mapRequired("Operator", LoclistEntry.Operator);
	IO.mapOptional("Values", LoclistEntry.Values);
	IO.mapOptional("DescriptionsLength", LoclistEntry.DescriptionsLength);
	IO.mapOptional("Descriptions", LoclistEntry.Descriptions);
	}

	template <typename EntryType>
	void MappingTraits<DWARFYAML::ListEntries<EntryType>>::mapping(
	IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
	IO.mapOptional("Entries", ListEntries.Entries);
	IO.mapOptional("Content", ListEntries.Content);
	}

	template <typename EntryType>
	std::string MappingTraits<DWARFYAML::ListEntries<EntryType>>::validate(
	IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
	if (ListEntries.Entries && ListEntries.Content)
	return "Entries and Content can't be used together";
	return "";
	}

	template <typename EntryType>
	void MappingTraits<DWARFYAML::ListTable<EntryType>>::mapping(
	IO &IO, DWARFYAML::ListTable<EntryType> &ListTable) {
	IO.mapOptional("Format", ListTable.Format, dwarf::DWARF32);
	IO.mapOptional("Length", ListTable.Length);
	IO.mapOptional("Version", ListTable.Version, 5);
	IO.mapOptional("AddressSize", ListTable.AddrSize);
	IO.mapOptional("SegmentSelectorSize", ListTable.SegSelectorSize, 0);
	IO.mapOptional("OffsetEntryCount", ListTable.OffsetEntryCount);
	IO.mapOptional("Offsets", ListTable.Offsets);
	IO.mapOptional("Lists", ListTable.Lists);
	}

	} // end namespace yaml

	} // end namespace llvm