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42d02eba7a
One more try... relanding r291541 with a fix to properly gate MaxOpsPerInst on DWARF version. Description from r291541: This patch re-lands r291470, which failed on Linux bots. The issue (I believe) was undefined behavior because the size of llvm::dwarf::LineNumberOps was not explcitly specified or consistently respected. The updated patch adds an explcit underlying type to the enum and preserves the size more correctly. Original description: This patch adds support for the DWARF debug_lines section. The line table state machine opcodes are preserved, so this can be used to test the state machine evaluation directly. llvm-svn: 291546
277 lines
7.3 KiB
C++
277 lines
7.3 KiB
C++
//===- DWARFYAML.h - DWARF YAMLIO implementation ----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file declares classes for handling the YAML representation
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/// of DWARF Debug Info.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJECTYAML_DWARFYAML_H
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#define LLVM_OBJECTYAML_DWARFYAML_H
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#include "llvm/ObjectYAML/YAML.h"
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#include "llvm/Support/Dwarf.h"
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namespace llvm {
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namespace DWARFYAML {
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struct AttributeAbbrev {
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llvm::dwarf::Attribute Attribute;
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llvm::dwarf::Form Form;
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};
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struct Abbrev {
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llvm::yaml::Hex32 Code;
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llvm::dwarf::Tag Tag;
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llvm::dwarf::Constants Children;
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std::vector<AttributeAbbrev> Attributes;
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};
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struct ARangeDescriptor {
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llvm::yaml::Hex64 Address;
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uint64_t Length;
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};
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struct ARange {
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uint32_t Length;
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uint16_t Version;
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uint32_t CuOffset;
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uint8_t AddrSize;
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uint8_t SegSize;
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std::vector<ARangeDescriptor> Descriptors;
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};
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struct PubEntry {
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llvm::yaml::Hex32 DieOffset;
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llvm::yaml::Hex8 Descriptor;
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StringRef Name;
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};
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struct PubSection {
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PubSection() : IsGNUStyle(false) {}
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uint32_t Length;
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uint16_t Version;
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uint32_t UnitOffset;
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uint32_t UnitSize;
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bool IsGNUStyle;
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std::vector<PubEntry> Entries;
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};
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struct FormValue {
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llvm::yaml::Hex64 Value;
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StringRef CStr;
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std::vector<llvm::yaml::Hex8> BlockData;
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};
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struct Entry {
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llvm::yaml::Hex32 AbbrCode;
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std::vector<FormValue> Values;
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};
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struct Unit {
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uint32_t Length;
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uint16_t Version;
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uint32_t AbbrOffset;
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uint8_t AddrSize;
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std::vector<Entry> Entries;
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};
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struct File {
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StringRef Name;
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uint64_t DirIdx;
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uint64_t ModTime;
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uint64_t Length;
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};
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struct LineTableOpcode {
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dwarf::LineNumberOps Opcode;
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uint64_t ExtLen;
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dwarf::LineNumberExtendedOps SubOpcode;
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uint64_t Data;
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int64_t SData;
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File FileEntry;
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std::vector<llvm::yaml::Hex8> UnknownOpcodeData;
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std::vector<llvm::yaml::Hex64> StandardOpcodeData;
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};
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struct LineTable {
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uint32_t TotalLength;
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uint64_t TotalLength64;
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uint16_t Version;
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uint64_t PrologueLength;
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uint8_t MinInstLength;
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uint8_t MaxOpsPerInst;
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uint8_t DefaultIsStmt;
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uint8_t LineBase;
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uint8_t LineRange;
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uint8_t OpcodeBase;
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std::vector<uint8_t> StandardOpcodeLengths;
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std::vector<StringRef> IncludeDirs;
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std::vector<File> Files;
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std::vector<LineTableOpcode> Opcodes;
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};
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struct Data {
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bool IsLittleEndian;
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std::vector<Abbrev> AbbrevDecls;
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std::vector<StringRef> DebugStrings;
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std::vector<ARange> ARanges;
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PubSection PubNames;
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PubSection PubTypes;
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PubSection GNUPubNames;
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PubSection GNUPubTypes;
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std::vector<Unit> CompileUnits;
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std::vector<LineTable> DebugLines;
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bool isEmpty() const;
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};
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} // namespace llvm::DWARFYAML
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} // namespace llvm
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LLVM_YAML_IS_SEQUENCE_VECTOR(uint8_t)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::yaml::Hex64)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::StringRef)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::yaml::Hex8)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::AttributeAbbrev)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::Abbrev)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::ARangeDescriptor)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::ARange)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::PubEntry)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::Unit)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::FormValue)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::Entry)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::File)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::LineTable)
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::DWARFYAML::LineTableOpcode)
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namespace llvm {
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namespace yaml {
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template <> struct MappingTraits<DWARFYAML::Data> {
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static void mapping(IO &IO, DWARFYAML::Data &DWARF);
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};
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template <> struct MappingTraits<DWARFYAML::Abbrev> {
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static void mapping(IO &IO, DWARFYAML::Abbrev &Abbrev);
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};
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template <> struct MappingTraits<DWARFYAML::AttributeAbbrev> {
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static void mapping(IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev);
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};
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template <> struct MappingTraits<DWARFYAML::ARangeDescriptor> {
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static void mapping(IO &IO, DWARFYAML::ARangeDescriptor &Descriptor);
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};
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template <> struct MappingTraits<DWARFYAML::ARange> {
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static void mapping(IO &IO, DWARFYAML::ARange &Range);
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};
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template <> struct MappingTraits<DWARFYAML::PubEntry> {
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static void mapping(IO &IO, DWARFYAML::PubEntry &Entry);
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};
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template <> struct MappingTraits<DWARFYAML::PubSection> {
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static void mapping(IO &IO, DWARFYAML::PubSection &Section);
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};
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template <> struct MappingTraits<DWARFYAML::Unit> {
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static void mapping(IO &IO, DWARFYAML::Unit &Unit);
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};
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template <> struct MappingTraits<DWARFYAML::Entry> {
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static void mapping(IO &IO, DWARFYAML::Entry &Entry);
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};
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template <> struct MappingTraits<DWARFYAML::FormValue> {
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static void mapping(IO &IO, DWARFYAML::FormValue &FormValue);
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};
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template <> struct MappingTraits<DWARFYAML::File> {
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static void mapping(IO &IO, DWARFYAML::File &File);
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};
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template <> struct MappingTraits<DWARFYAML::LineTableOpcode> {
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static void mapping(IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode);
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};
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template <> struct MappingTraits<DWARFYAML::LineTable> {
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static void mapping(IO &IO, DWARFYAML::LineTable &LineTable);
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};
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#define HANDLE_DW_TAG(unused, name) \
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io.enumCase(value, "DW_TAG_" #name, dwarf::DW_TAG_##name);
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template <> struct ScalarEnumerationTraits<dwarf::Tag> {
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static void enumeration(IO &io, dwarf::Tag &value) {
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#include "llvm/Support/Dwarf.def"
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io.enumFallback<Hex16>(value);
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}
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};
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#define HANDLE_DW_LNS(unused, name) \
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io.enumCase(value, "DW_LNS_" #name, dwarf::DW_LNS_##name);
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template <> struct ScalarEnumerationTraits<dwarf::LineNumberOps> {
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static void enumeration(IO &io, dwarf::LineNumberOps &value) {
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#include "llvm/Support/Dwarf.def"
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io.enumFallback<Hex8>(value);
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}
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};
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#define HANDLE_DW_LNE(unused, name) \
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io.enumCase(value, "DW_LNE_" #name, dwarf::DW_LNE_##name);
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template <> struct ScalarEnumerationTraits<dwarf::LineNumberExtendedOps> {
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static void enumeration(IO &io, dwarf::LineNumberExtendedOps &value) {
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#include "llvm/Support/Dwarf.def"
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io.enumFallback<Hex16>(value);
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}
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};
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#define HANDLE_DW_AT(unused, name) \
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io.enumCase(value, "DW_AT_" #name, dwarf::DW_AT_##name);
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template <> struct ScalarEnumerationTraits<dwarf::Attribute> {
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static void enumeration(IO &io, dwarf::Attribute &value) {
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#include "llvm/Support/Dwarf.def"
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io.enumFallback<Hex16>(value);
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}
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};
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#define HANDLE_DW_FORM(unused, name) \
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io.enumCase(value, "DW_FORM_" #name, dwarf::DW_FORM_##name);
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template <> struct ScalarEnumerationTraits<dwarf::Form> {
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static void enumeration(IO &io, dwarf::Form &value) {
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#include "llvm/Support/Dwarf.def"
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io.enumFallback<Hex16>(value);
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}
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};
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template <> struct ScalarEnumerationTraits<dwarf::Constants> {
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static void enumeration(IO &io, dwarf::Constants &value) {
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io.enumCase(value, "DW_CHILDREN_no", dwarf::DW_CHILDREN_no);
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io.enumCase(value, "DW_CHILDREN_yes", dwarf::DW_CHILDREN_yes);
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io.enumFallback<Hex16>(value);
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}
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};
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} // namespace llvm::yaml
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} // namespace llvm
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#endif
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