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llvm-capstone/llvm/lib/ObjectYAML/CodeViewYAMLDebugSections.cpp
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo 
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

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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 (const 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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