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llvm-mirror/lib/ObjectYAML/CodeViewYAMLDebugSections.cpp
Bill Wendling 0816222e8f Revert "Remove redundant "std::move"s in return statements" 
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  error: call to deleted constructor of 'llvm::Error'

errors.

This reverts commit 1c2241a7936bf85aa68aef94bd40c3ba77d8ddf2.
2020-02-10 07:07:40 -08:00

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//===- CodeViewYAMLDebugSections.cpp - CodeView YAMLIO debug sections -----===//
//
// 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 CodeView
// Debug Info.
//
//===----------------------------------------------------------------------===//
#include "llvm/ObjectYAML/CodeViewYAMLDebugSections.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/COFF.h"
#include "llvm/DebugInfo/CodeView/CodeView.h"
#include "llvm/DebugInfo/CodeView/CodeViewError.h"
#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugCrossExSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugCrossImpSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugSubsection.h"
#include "llvm/DebugInfo/CodeView/DebugSubsectionVisitor.h"
#include "llvm/DebugInfo/CodeView/DebugSymbolRVASubsection.h"
#include "llvm/DebugInfo/CodeView/DebugSymbolsSubsection.h"
#include "llvm/DebugInfo/CodeView/Line.h"
#include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
#include "llvm/DebugInfo/CodeView/TypeIndex.h"
#include "llvm/ObjectYAML/CodeViewYAMLSymbols.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/BinaryStreamReader.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
using namespace llvm;
using namespace llvm::codeview;
using namespace llvm::CodeViewYAML;
using namespace llvm::CodeViewYAML::detail;
using namespace llvm::yaml;
LLVM_YAML_IS_SEQUENCE_VECTOR(SourceFileChecksumEntry)
LLVM_YAML_IS_SEQUENCE_VECTOR(SourceLineEntry)
LLVM_YAML_IS_SEQUENCE_VECTOR(SourceColumnEntry)
LLVM_YAML_IS_SEQUENCE_VECTOR(SourceLineBlock)
LLVM_YAML_IS_SEQUENCE_VECTOR(SourceLineInfo)
LLVM_YAML_IS_SEQUENCE_VECTOR(InlineeSite)
LLVM_YAML_IS_SEQUENCE_VECTOR(InlineeInfo)
LLVM_YAML_IS_SEQUENCE_VECTOR(CrossModuleExport)
LLVM_YAML_IS_SEQUENCE_VECTOR(YAMLCrossModuleImport)
LLVM_YAML_IS_SEQUENCE_VECTOR(YAMLFrameData)
LLVM_YAML_DECLARE_SCALAR_TRAITS(HexFormattedString, QuotingType::None)
LLVM_YAML_DECLARE_ENUM_TRAITS(DebugSubsectionKind)
LLVM_YAML_DECLARE_ENUM_TRAITS(FileChecksumKind)
LLVM_YAML_DECLARE_BITSET_TRAITS(LineFlags)
LLVM_YAML_DECLARE_MAPPING_TRAITS(CrossModuleExport)
LLVM_YAML_DECLARE_MAPPING_TRAITS(YAMLFrameData)
LLVM_YAML_DECLARE_MAPPING_TRAITS(YAMLCrossModuleImport)
LLVM_YAML_DECLARE_MAPPING_TRAITS(CrossModuleImportItem)
LLVM_YAML_DECLARE_MAPPING_TRAITS(SourceLineEntry)
LLVM_YAML_DECLARE_MAPPING_TRAITS(SourceColumnEntry)
LLVM_YAML_DECLARE_MAPPING_TRAITS(SourceFileChecksumEntry)
LLVM_YAML_DECLARE_MAPPING_TRAITS(SourceLineBlock)
LLVM_YAML_DECLARE_MAPPING_TRAITS(InlineeSite)
namespace llvm {
namespace CodeViewYAML {
namespace detail {
struct YAMLSubsectionBase {
explicit YAMLSubsectionBase(DebugSubsectionKind Kind) : Kind(Kind) {}
virtual ~YAMLSubsectionBase() = default;
virtual void map(IO &IO) = 0;
virtual std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const = 0;
DebugSubsectionKind Kind;
};
} // end namespace detail
} // end namespace CodeViewYAML
} // end namespace llvm
namespace {
struct YAMLChecksumsSubsection : public YAMLSubsectionBase {
YAMLChecksumsSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::FileChecksums) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLChecksumsSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &FC);
std::vector<SourceFileChecksumEntry> Checksums;
};
struct YAMLLinesSubsection : public YAMLSubsectionBase {
YAMLLinesSubsection() : YAMLSubsectionBase(DebugSubsectionKind::Lines) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLLinesSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums,
const DebugLinesSubsectionRef &Lines);
SourceLineInfo Lines;
};
struct YAMLInlineeLinesSubsection : public YAMLSubsectionBase {
YAMLInlineeLinesSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::InlineeLines) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLInlineeLinesSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums,
const DebugInlineeLinesSubsectionRef &Lines);
InlineeInfo InlineeLines;
};
struct YAMLCrossModuleExportsSubsection : public YAMLSubsectionBase {
YAMLCrossModuleExportsSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::CrossScopeExports) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLCrossModuleExportsSubsection>>
fromCodeViewSubsection(const DebugCrossModuleExportsSubsectionRef &Exports);
std::vector<CrossModuleExport> Exports;
};
struct YAMLCrossModuleImportsSubsection : public YAMLSubsectionBase {
YAMLCrossModuleImportsSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::CrossScopeImports) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLCrossModuleImportsSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings,
const DebugCrossModuleImportsSubsectionRef &Imports);
std::vector<YAMLCrossModuleImport> Imports;
};
struct YAMLSymbolsSubsection : public YAMLSubsectionBase {
YAMLSymbolsSubsection() : YAMLSubsectionBase(DebugSubsectionKind::Symbols) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLSymbolsSubsection>>
fromCodeViewSubsection(const DebugSymbolsSubsectionRef &Symbols);
std::vector<CodeViewYAML::SymbolRecord> Symbols;
};
struct YAMLStringTableSubsection : public YAMLSubsectionBase {
YAMLStringTableSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::StringTable) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLStringTableSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings);
std::vector<StringRef> Strings;
};
struct YAMLFrameDataSubsection : public YAMLSubsectionBase {
YAMLFrameDataSubsection()
: YAMLSubsectionBase(DebugSubsectionKind::FrameData) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLFrameDataSubsection>>
fromCodeViewSubsection(const DebugStringTableSubsectionRef &Strings,
const DebugFrameDataSubsectionRef &Frames);
std::vector<YAMLFrameData> Frames;
};
struct YAMLCoffSymbolRVASubsection : public YAMLSubsectionBase {
YAMLCoffSymbolRVASubsection()
: YAMLSubsectionBase(DebugSubsectionKind::CoffSymbolRVA) {}
void map(IO &IO) override;
std::shared_ptr<DebugSubsection>
toCodeViewSubsection(BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const override;
static Expected<std::shared_ptr<YAMLCoffSymbolRVASubsection>>
fromCodeViewSubsection(const DebugSymbolRVASubsectionRef &RVAs);
std::vector<uint32_t> RVAs;
};
} // end anonymous namespace
void ScalarBitSetTraits<LineFlags>::bitset(IO &io, LineFlags &Flags) {
io.bitSetCase(Flags, "HasColumnInfo", LF_HaveColumns);
io.enumFallback<Hex16>(Flags);
}
void ScalarEnumerationTraits<FileChecksumKind>::enumeration(
IO &io, FileChecksumKind &Kind) {
io.enumCase(Kind, "None", FileChecksumKind::None);
io.enumCase(Kind, "MD5", FileChecksumKind::MD5);
io.enumCase(Kind, "SHA1", FileChecksumKind::SHA1);
io.enumCase(Kind, "SHA256", FileChecksumKind::SHA256);
}
void ScalarTraits<HexFormattedString>::output(const HexFormattedString &Value,
void *ctx, raw_ostream &Out) {
StringRef Bytes(reinterpret_cast<const char *>(Value.Bytes.data()),
Value.Bytes.size());
Out << toHex(Bytes);
}
StringRef ScalarTraits<HexFormattedString>::input(StringRef Scalar, void *ctxt,
HexFormattedString &Value) {
std::string H = fromHex(Scalar);
Value.Bytes.assign(H.begin(), H.end());
return StringRef();
}
void MappingTraits<SourceLineEntry>::mapping(IO &IO, SourceLineEntry &Obj) {
IO.mapRequired("Offset", Obj.Offset);
IO.mapRequired("LineStart", Obj.LineStart);
IO.mapRequired("IsStatement", Obj.IsStatement);
IO.mapRequired("EndDelta", Obj.EndDelta);
}
void MappingTraits<SourceColumnEntry>::mapping(IO &IO, SourceColumnEntry &Obj) {
IO.mapRequired("StartColumn", Obj.StartColumn);
IO.mapRequired("EndColumn", Obj.EndColumn);
}
void MappingTraits<SourceLineBlock>::mapping(IO &IO, SourceLineBlock &Obj) {
IO.mapRequired("FileName", Obj.FileName);
IO.mapRequired("Lines", Obj.Lines);
IO.mapRequired("Columns", Obj.Columns);
}
void MappingTraits<CrossModuleExport>::mapping(IO &IO, CrossModuleExport &Obj) {
IO.mapRequired("LocalId", Obj.Local);
IO.mapRequired("GlobalId", Obj.Global);
}
void MappingTraits<YAMLCrossModuleImport>::mapping(IO &IO,
YAMLCrossModuleImport &Obj) {
IO.mapRequired("Module", Obj.ModuleName);
IO.mapRequired("Imports", Obj.ImportIds);
}
void MappingTraits<SourceFileChecksumEntry>::mapping(
IO &IO, SourceFileChecksumEntry &Obj) {
IO.mapRequired("FileName", Obj.FileName);
IO.mapRequired("Kind", Obj.Kind);
IO.mapRequired("Checksum", Obj.ChecksumBytes);
}
void MappingTraits<InlineeSite>::mapping(IO &IO, InlineeSite &Obj) {
IO.mapRequired("FileName", Obj.FileName);
IO.mapRequired("LineNum", Obj.SourceLineNum);
IO.mapRequired("Inlinee", Obj.Inlinee);
IO.mapOptional("ExtraFiles", Obj.ExtraFiles);
}
void MappingTraits<YAMLFrameData>::mapping(IO &IO, YAMLFrameData &Obj) {
IO.mapRequired("CodeSize", Obj.CodeSize);
IO.mapRequired("FrameFunc", Obj.FrameFunc);
IO.mapRequired("LocalSize", Obj.LocalSize);
IO.mapOptional("MaxStackSize", Obj.MaxStackSize);
IO.mapOptional("ParamsSize", Obj.ParamsSize);
IO.mapOptional("PrologSize", Obj.PrologSize);
IO.mapOptional("RvaStart", Obj.RvaStart);
IO.mapOptional("SavedRegsSize", Obj.SavedRegsSize);
}
void YAMLChecksumsSubsection::map(IO &IO) {
IO.mapTag("!FileChecksums", true);
IO.mapRequired("Checksums", Checksums);
}
void YAMLLinesSubsection::map(IO &IO) {
IO.mapTag("!Lines", true);
IO.mapRequired("CodeSize", Lines.CodeSize);
IO.mapRequired("Flags", Lines.Flags);
IO.mapRequired("RelocOffset", Lines.RelocOffset);
IO.mapRequired("RelocSegment", Lines.RelocSegment);
IO.mapRequired("Blocks", Lines.Blocks);
}
void YAMLInlineeLinesSubsection::map(IO &IO) {
IO.mapTag("!InlineeLines", true);
IO.mapRequired("HasExtraFiles", InlineeLines.HasExtraFiles);
IO.mapRequired("Sites", InlineeLines.Sites);
}
void YAMLCrossModuleExportsSubsection::map(IO &IO) {
IO.mapTag("!CrossModuleExports", true);
IO.mapOptional("Exports", Exports);
}
void YAMLCrossModuleImportsSubsection::map(IO &IO) {
IO.mapTag("!CrossModuleImports", true);
IO.mapOptional("Imports", Imports);
}
void YAMLSymbolsSubsection::map(IO &IO) {
IO.mapTag("!Symbols", true);
IO.mapRequired("Records", Symbols);
}
void YAMLStringTableSubsection::map(IO &IO) {
IO.mapTag("!StringTable", true);
IO.mapRequired("Strings", Strings);
}
void YAMLFrameDataSubsection::map(IO &IO) {
IO.mapTag("!FrameData", true);
IO.mapRequired("Frames", Frames);
}
void YAMLCoffSymbolRVASubsection::map(IO &IO) {
IO.mapTag("!COFFSymbolRVAs", true);
IO.mapRequired("RVAs", RVAs);
}
void MappingTraits<YAMLDebugSubsection>::mapping(
IO &IO, YAMLDebugSubsection &Subsection) {
if (!IO.outputting()) {
if (IO.mapTag("!FileChecksums")) {
auto SS = std::make_shared<YAMLChecksumsSubsection>();
Subsection.Subsection = SS;
} else if (IO.mapTag("!Lines")) {
Subsection.Subsection = std::make_shared<YAMLLinesSubsection>();
} else if (IO.mapTag("!InlineeLines")) {
Subsection.Subsection = std::make_shared<YAMLInlineeLinesSubsection>();
} else if (IO.mapTag("!CrossModuleExports")) {
Subsection.Subsection =
std::make_shared<YAMLCrossModuleExportsSubsection>();
} else if (IO.mapTag("!CrossModuleImports")) {
Subsection.Subsection =
std::make_shared<YAMLCrossModuleImportsSubsection>();
} else if (IO.mapTag("!Symbols")) {
Subsection.Subsection = std::make_shared<YAMLSymbolsSubsection>();
} else if (IO.mapTag("!StringTable")) {
Subsection.Subsection = std::make_shared<YAMLStringTableSubsection>();
} else if (IO.mapTag("!FrameData")) {
Subsection.Subsection = std::make_shared<YAMLFrameDataSubsection>();
} else if (IO.mapTag("!COFFSymbolRVAs")) {
Subsection.Subsection = std::make_shared<YAMLCoffSymbolRVASubsection>();
} else {
llvm_unreachable("Unexpected subsection tag!");
}
}
Subsection.Subsection->map(IO);
}
std::shared_ptr<DebugSubsection> YAMLChecksumsSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
assert(SC.hasStrings());
auto Result = std::make_shared<DebugChecksumsSubsection>(*SC.strings());
for (const auto &CS : Checksums) {
Result->addChecksum(CS.FileName, CS.Kind, CS.ChecksumBytes.Bytes);
}
return Result;
}
std::shared_ptr<DebugSubsection> YAMLLinesSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
assert(SC.hasStrings() && SC.hasChecksums());
auto Result =
std::make_shared<DebugLinesSubsection>(*SC.checksums(), *SC.strings());
Result->setCodeSize(Lines.CodeSize);
Result->setRelocationAddress(Lines.RelocSegment, Lines.RelocOffset);
Result->setFlags(Lines.Flags);
for (const auto &LC : Lines.Blocks) {
Result->createBlock(LC.FileName);
if (Result->hasColumnInfo()) {
for (auto Item : zip(LC.Lines, LC.Columns)) {
auto &L = std::get<0>(Item);
auto &C = std::get<1>(Item);
uint32_t LE = L.LineStart + L.EndDelta;
Result->addLineAndColumnInfo(L.Offset,
LineInfo(L.LineStart, LE, L.IsStatement),
C.StartColumn, C.EndColumn);
}
} else {
for (const auto &L : LC.Lines) {
uint32_t LE = L.LineStart + L.EndDelta;
Result->addLineInfo(L.Offset, LineInfo(L.LineStart, LE, L.IsStatement));
}
}
}
return Result;
}
std::shared_ptr<DebugSubsection>
YAMLInlineeLinesSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
assert(SC.hasChecksums());
auto Result = std::make_shared<DebugInlineeLinesSubsection>(
*SC.checksums(), InlineeLines.HasExtraFiles);
for (const auto &Site : InlineeLines.Sites) {
Result->addInlineSite(TypeIndex(Site.Inlinee), Site.FileName,
Site.SourceLineNum);
if (!InlineeLines.HasExtraFiles)
continue;
for (auto EF : Site.ExtraFiles) {
Result->addExtraFile(EF);
}
}
return Result;
}
std::shared_ptr<DebugSubsection>
YAMLCrossModuleExportsSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
auto Result = std::make_shared<DebugCrossModuleExportsSubsection>();
for (const auto &M : Exports)
Result->addMapping(M.Local, M.Global);
return Result;
}
std::shared_ptr<DebugSubsection>
YAMLCrossModuleImportsSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
assert(SC.hasStrings());
auto Result =
std::make_shared<DebugCrossModuleImportsSubsection>(*SC.strings());
for (const auto &M : Imports) {
for (const auto Id : M.ImportIds)
Result->addImport(M.ModuleName, Id);
}
return Result;
}
std::shared_ptr<DebugSubsection> YAMLSymbolsSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
auto Result = std::make_shared<DebugSymbolsSubsection>();
for (const auto &Sym : Symbols)
Result->addSymbol(
Sym.toCodeViewSymbol(Allocator, CodeViewContainer::ObjectFile));
return Result;
}
std::shared_ptr<DebugSubsection>
YAMLStringTableSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
auto Result = std::make_shared<DebugStringTableSubsection>();
for (const auto &Str : this->Strings)
Result->insert(Str);
return Result;
}
std::shared_ptr<DebugSubsection> YAMLFrameDataSubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
assert(SC.hasStrings());
auto Result = std::make_shared<DebugFrameDataSubsection>(true);
for (const auto &YF : Frames) {
codeview::FrameData F;
F.CodeSize = YF.CodeSize;
F.Flags = YF.Flags;
F.LocalSize = YF.LocalSize;
F.MaxStackSize = YF.MaxStackSize;
F.ParamsSize = YF.ParamsSize;
F.PrologSize = YF.PrologSize;
F.RvaStart = YF.RvaStart;
F.SavedRegsSize = YF.SavedRegsSize;
F.FrameFunc = SC.strings()->insert(YF.FrameFunc);
Result->addFrameData(F);
}
return Result;
}
std::shared_ptr<DebugSubsection>
YAMLCoffSymbolRVASubsection::toCodeViewSubsection(
BumpPtrAllocator &Allocator,
const codeview::StringsAndChecksums &SC) const {
auto Result = std::make_shared<DebugSymbolRVASubsection>();
for (const auto &RVA : RVAs)
Result->addRVA(RVA);
return Result;
}
static Expected<SourceFileChecksumEntry>
convertOneChecksum(const DebugStringTableSubsectionRef &Strings,
const FileChecksumEntry &CS) {
auto ExpectedString = Strings.getString(CS.FileNameOffset);
if (!ExpectedString)
return ExpectedString.takeError();
SourceFileChecksumEntry Result;
Result.ChecksumBytes.Bytes = CS.Checksum;
Result.Kind = CS.Kind;
Result.FileName = *ExpectedString;
return Result;
}
static Expected<StringRef>
getFileName(const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums, uint32_t FileID) {
auto Iter = Checksums.getArray().at(FileID);
if (Iter == Checksums.getArray().end())
return make_error<CodeViewError>(cv_error_code::no_records);
uint32_t Offset = Iter->FileNameOffset;
return Strings.getString(Offset);
}
Expected<std::shared_ptr<YAMLChecksumsSubsection>>
YAMLChecksumsSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &FC) {
auto Result = std::make_shared<YAMLChecksumsSubsection>();
for (const auto &CS : FC) {
auto ConvertedCS = convertOneChecksum(Strings, CS);
if (!ConvertedCS)
return ConvertedCS.takeError();
Result->Checksums.push_back(*ConvertedCS);
}
return Result;
}
Expected<std::shared_ptr<YAMLLinesSubsection>>
YAMLLinesSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums,
const DebugLinesSubsectionRef &Lines) {
auto Result = std::make_shared<YAMLLinesSubsection>();
Result->Lines.CodeSize = Lines.header()->CodeSize;
Result->Lines.RelocOffset = Lines.header()->RelocOffset;
Result->Lines.RelocSegment = Lines.header()->RelocSegment;
Result->Lines.Flags = static_cast<LineFlags>(uint16_t(Lines.header()->Flags));
for (const auto &L : Lines) {
SourceLineBlock Block;
auto EF = getFileName(Strings, Checksums, L.NameIndex);
if (!EF)
return EF.takeError();
Block.FileName = *EF;
if (Lines.hasColumnInfo()) {
for (const auto &C : L.Columns) {
SourceColumnEntry SCE;
SCE.EndColumn = C.EndColumn;
SCE.StartColumn = C.StartColumn;
Block.Columns.push_back(SCE);
}
}
for (const auto &LN : L.LineNumbers) {
SourceLineEntry SLE;
LineInfo LI(LN.Flags);
SLE.Offset = LN.Offset;
SLE.LineStart = LI.getStartLine();
SLE.EndDelta = LI.getLineDelta();
SLE.IsStatement = LI.isStatement();
Block.Lines.push_back(SLE);
}
Result->Lines.Blocks.push_back(Block);
}
return Result;
}
Expected<std::shared_ptr<YAMLInlineeLinesSubsection>>
YAMLInlineeLinesSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings,
const DebugChecksumsSubsectionRef &Checksums,
const DebugInlineeLinesSubsectionRef &Lines) {
auto Result = std::make_shared<YAMLInlineeLinesSubsection>();
Result->InlineeLines.HasExtraFiles = Lines.hasExtraFiles();
for (const auto &IL : Lines) {
InlineeSite Site;
auto ExpF = getFileName(Strings, Checksums, IL.Header->FileID);
if (!ExpF)
return ExpF.takeError();
Site.FileName = *ExpF;
Site.Inlinee = IL.Header->Inlinee.getIndex();
Site.SourceLineNum = IL.Header->SourceLineNum;
if (Lines.hasExtraFiles()) {
for (const auto EF : IL.ExtraFiles) {
auto ExpF2 = getFileName(Strings, Checksums, EF);
if (!ExpF2)
return ExpF2.takeError();
Site.ExtraFiles.push_back(*ExpF2);
}
}
Result->InlineeLines.Sites.push_back(Site);
}
return Result;
}
Expected<std::shared_ptr<YAMLCrossModuleExportsSubsection>>
YAMLCrossModuleExportsSubsection::fromCodeViewSubsection(
const DebugCrossModuleExportsSubsectionRef &Exports) {
auto Result = std::make_shared<YAMLCrossModuleExportsSubsection>();
Result->Exports.assign(Exports.begin(), Exports.end());
return Result;
}
Expected<std::shared_ptr<YAMLCrossModuleImportsSubsection>>
YAMLCrossModuleImportsSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings,
const DebugCrossModuleImportsSubsectionRef &Imports) {
auto Result = std::make_shared<YAMLCrossModuleImportsSubsection>();
for (const auto &CMI : Imports) {
YAMLCrossModuleImport YCMI;
auto ExpectedStr = Strings.getString(CMI.Header->ModuleNameOffset);
if (!ExpectedStr)
return ExpectedStr.takeError();
YCMI.ModuleName = *ExpectedStr;
YCMI.ImportIds.assign(CMI.Imports.begin(), CMI.Imports.end());
Result->Imports.push_back(YCMI);
}
return Result;
}
Expected<std::shared_ptr<YAMLSymbolsSubsection>>
YAMLSymbolsSubsection::fromCodeViewSubsection(
const DebugSymbolsSubsectionRef &Symbols) {
auto Result = std::make_shared<YAMLSymbolsSubsection>();
for (const auto &Sym : Symbols) {
auto S = CodeViewYAML::SymbolRecord::fromCodeViewSymbol(Sym);
if (!S)
return joinErrors(make_error<CodeViewError>(
cv_error_code::corrupt_record,
"Invalid CodeView Symbol Record in SymbolRecord "
"subsection of .debug$S while converting to YAML!"),
S.takeError());
Result->Symbols.push_back(*S);
}
return Result;
}
Expected<std::shared_ptr<YAMLStringTableSubsection>>
YAMLStringTableSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings) {
auto Result = std::make_shared<YAMLStringTableSubsection>();
BinaryStreamReader Reader(Strings.getBuffer());
StringRef S;
// First item is a single null string, skip it.
if (auto EC = Reader.readCString(S))
return std::move(EC);
assert(S.empty());
while (Reader.bytesRemaining() > 0) {
if (auto EC = Reader.readCString(S))
return std::move(EC);
Result->Strings.push_back(S);
}
return Result;
}
Expected<std::shared_ptr<YAMLFrameDataSubsection>>
YAMLFrameDataSubsection::fromCodeViewSubsection(
const DebugStringTableSubsectionRef &Strings,
const DebugFrameDataSubsectionRef &Frames) {
auto Result = std::make_shared<YAMLFrameDataSubsection>();
for (const auto &F : Frames) {
YAMLFrameData YF;
YF.CodeSize = F.CodeSize;
YF.Flags = F.Flags;
YF.LocalSize = F.LocalSize;
YF.MaxStackSize = F.MaxStackSize;
YF.ParamsSize = F.ParamsSize;
YF.PrologSize = F.PrologSize;
YF.RvaStart = F.RvaStart;
YF.SavedRegsSize = F.SavedRegsSize;
auto ES = Strings.getString(F.FrameFunc);
if (!ES)
return joinErrors(
make_error<CodeViewError>(
cv_error_code::no_records,
"Could not find string for string id while mapping FrameData!"),
ES.takeError());
YF.FrameFunc = *ES;
Result->Frames.push_back(YF);
}
return Result;
}
Expected<std::shared_ptr<YAMLCoffSymbolRVASubsection>>
YAMLCoffSymbolRVASubsection::fromCodeViewSubsection(
const DebugSymbolRVASubsectionRef &Section) {
auto Result = std::make_shared<YAMLCoffSymbolRVASubsection>();
for (const auto &RVA : Section) {
Result->RVAs.push_back(RVA);
}
return Result;
}
Expected<std::vector<std::shared_ptr<DebugSubsection>>>
llvm::CodeViewYAML::toCodeViewSubsectionList(
BumpPtrAllocator &Allocator, ArrayRef<YAMLDebugSubsection> Subsections,
const codeview::StringsAndChecksums &SC) {
std::vector<std::shared_ptr<DebugSubsection>> Result;
if (Subsections.empty())
return std::move(Result);
for (const auto &SS : Subsections) {
std::shared_ptr<DebugSubsection> CVS;
CVS = SS.Subsection->toCodeViewSubsection(Allocator, SC);
assert(CVS != nullptr);
Result.push_back(std::move(CVS));
}
return std::move(Result);
}
namespace {
struct SubsectionConversionVisitor : public DebugSubsectionVisitor {
SubsectionConversionVisitor() = default;
Error visitUnknown(DebugUnknownSubsectionRef &Unknown) override;
Error visitLines(DebugLinesSubsectionRef &Lines,
const StringsAndChecksumsRef &State) override;
Error visitFileChecksums(DebugChecksumsSubsectionRef &Checksums,
const StringsAndChecksumsRef &State) override;
Error visitInlineeLines(DebugInlineeLinesSubsectionRef &Inlinees,
const StringsAndChecksumsRef &State) override;
Error visitCrossModuleExports(DebugCrossModuleExportsSubsectionRef &Checksums,
const StringsAndChecksumsRef &State) override;
Error visitCrossModuleImports(DebugCrossModuleImportsSubsectionRef &Inlinees,
const StringsAndChecksumsRef &State) override;
Error visitStringTable(DebugStringTableSubsectionRef &ST,
const StringsAndChecksumsRef &State) override;
Error visitSymbols(DebugSymbolsSubsectionRef &Symbols,
const StringsAndChecksumsRef &State) override;
Error visitFrameData(DebugFrameDataSubsectionRef &Symbols,
const StringsAndChecksumsRef &State) override;
Error visitCOFFSymbolRVAs(DebugSymbolRVASubsectionRef &Symbols,
const StringsAndChecksumsRef &State) override;
YAMLDebugSubsection Subsection;
};
} // end anonymous namespace
Error SubsectionConversionVisitor::visitUnknown(
DebugUnknownSubsectionRef &Unknown) {
return make_error<CodeViewError>(cv_error_code::operation_unsupported);
}
Error SubsectionConversionVisitor::visitLines(
DebugLinesSubsectionRef &Lines, const StringsAndChecksumsRef &State) {
auto Result = YAMLLinesSubsection::fromCodeViewSubsection(
State.strings(), State.checksums(), Lines);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitFileChecksums(
DebugChecksumsSubsectionRef &Checksums,
const StringsAndChecksumsRef &State) {
auto Result = YAMLChecksumsSubsection::fromCodeViewSubsection(State.strings(),
Checksums);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitInlineeLines(
DebugInlineeLinesSubsectionRef &Inlinees,
const StringsAndChecksumsRef &State) {
auto Result = YAMLInlineeLinesSubsection::fromCodeViewSubsection(
State.strings(), State.checksums(), Inlinees);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitCrossModuleExports(
DebugCrossModuleExportsSubsectionRef &Exports,
const StringsAndChecksumsRef &State) {
auto Result =
YAMLCrossModuleExportsSubsection::fromCodeViewSubsection(Exports);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitCrossModuleImports(
DebugCrossModuleImportsSubsectionRef &Imports,
const StringsAndChecksumsRef &State) {
auto Result = YAMLCrossModuleImportsSubsection::fromCodeViewSubsection(
State.strings(), Imports);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitStringTable(
DebugStringTableSubsectionRef &Strings,
const StringsAndChecksumsRef &State) {
auto Result = YAMLStringTableSubsection::fromCodeViewSubsection(Strings);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitSymbols(
DebugSymbolsSubsectionRef &Symbols, const StringsAndChecksumsRef &State) {
auto Result = YAMLSymbolsSubsection::fromCodeViewSubsection(Symbols);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitFrameData(
DebugFrameDataSubsectionRef &Frames, const StringsAndChecksumsRef &State) {
auto Result =
YAMLFrameDataSubsection::fromCodeViewSubsection(State.strings(), Frames);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Error SubsectionConversionVisitor::visitCOFFSymbolRVAs(
DebugSymbolRVASubsectionRef &RVAs, const StringsAndChecksumsRef &State) {
auto Result = YAMLCoffSymbolRVASubsection::fromCodeViewSubsection(RVAs);
if (!Result)
return Result.takeError();
Subsection.Subsection = *Result;
return Error::success();
}
Expected<YAMLDebugSubsection>
YAMLDebugSubsection::fromCodeViewSubection(const StringsAndChecksumsRef &SC,
const DebugSubsectionRecord &SS) {
SubsectionConversionVisitor V;
if (auto EC = visitDebugSubsection(SS, V, SC))
return std::move(EC);
return V.Subsection;
}
std::vector<YAMLDebugSubsection>
llvm::CodeViewYAML::fromDebugS(ArrayRef<uint8_t> Data,
const StringsAndChecksumsRef &SC) {
BinaryStreamReader Reader(Data, support::little);
uint32_t Magic;
ExitOnError Err("Invalid .debug$S section!");
Err(Reader.readInteger(Magic));
assert(Magic == COFF::DEBUG_SECTION_MAGIC && "Invalid .debug$S section!");
DebugSubsectionArray Subsections;
Err(Reader.readArray(Subsections, Reader.bytesRemaining()));
std::vector<YAMLDebugSubsection> Result;
for (const auto &SS : Subsections) {
auto YamlSS = Err(YAMLDebugSubsection::fromCodeViewSubection(SC, SS));
Result.push_back(YamlSS);
}
return Result;
}
void llvm::CodeViewYAML::initializeStringsAndChecksums(
ArrayRef<YAMLDebugSubsection> Sections, codeview::StringsAndChecksums &SC) {
// String Table and Checksums subsections don't use the allocator.
BumpPtrAllocator Allocator;
// It's possible for checksums and strings to even appear in different debug$S
// sections, so we have to make this a stateful function that can build up
// the strings and checksums field over multiple iterations.
// File Checksums require the string table, but may become before it, so we
// have to scan for strings first, then scan for checksums again from the
// beginning.
if (!SC.hasStrings()) {
for (const auto &SS : Sections) {
if (SS.Subsection->Kind != DebugSubsectionKind::StringTable)
continue;
auto Result = SS.Subsection->toCodeViewSubsection(Allocator, SC);
SC.setStrings(
std::static_pointer_cast<DebugStringTableSubsection>(Result));
break;
}
}
if (SC.hasStrings() && !SC.hasChecksums()) {
for (const auto &SS : Sections) {
if (SS.Subsection->Kind != DebugSubsectionKind::FileChecksums)
continue;
auto Result = SS.Subsection->toCodeViewSubsection(Allocator, SC);
SC.setChecksums(
std::static_pointer_cast<DebugChecksumsSubsection>(Result));
break;
}
}
}
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