llvm/lib/DebugInfo/CodeView/SymbolRecordMapping.cpp
Zachary Turner 6a330c6d5d [CodeView] Properly align symbol records on read/write.
Object files have symbol records not aligned to any particular
boundary (e.g. 1-byte aligned), while PDB files have symbol
records padded to 4-byte aligned boundaries.  Since they share
the same reading / writing code, we have to provide an option to
specify the alignment and propagate it up to the producer or
consumer who knows what the alignment is supposed to be for the
given container type.

Added a test for this by modifying the existing PDB -> YAML -> PDB
round-tripping code to round trip symbol records as well as types.

Differential Revision: https://reviews.llvm.org/D33785

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304484 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-01 21:52:41 +00:00

466 lines
14 KiB
C++

//===- SymbolRecordMapping.cpp -----------------------------------*- C++-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/SymbolRecordMapping.h"
using namespace llvm;
using namespace llvm::codeview;
#define error(X) \
if (auto EC = X) \
return EC;
namespace {
struct MapGap {
Error operator()(CodeViewRecordIO &IO, LocalVariableAddrGap &Gap) const {
error(IO.mapInteger(Gap.GapStartOffset));
error(IO.mapInteger(Gap.Range));
return Error::success();
}
};
}
static Error mapLocalVariableAddrRange(CodeViewRecordIO &IO,
LocalVariableAddrRange &Range) {
error(IO.mapInteger(Range.OffsetStart));
error(IO.mapInteger(Range.ISectStart));
error(IO.mapInteger(Range.Range));
return Error::success();
}
Error SymbolRecordMapping::visitSymbolBegin(CVSymbol &Record) {
error(IO.beginRecord(MaxRecordLength - sizeof(RecordPrefix)));
return Error::success();
}
Error SymbolRecordMapping::visitSymbolEnd(CVSymbol &Record) {
error(IO.padToAlignment(alignOf(Container)));
error(IO.endRecord());
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, BlockSym &Block) {
error(IO.mapInteger(Block.Parent));
error(IO.mapInteger(Block.End));
error(IO.mapInteger(Block.CodeSize));
error(IO.mapInteger(Block.CodeOffset));
error(IO.mapInteger(Block.Segment));
error(IO.mapStringZ(Block.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, Thunk32Sym &Thunk) {
error(IO.mapInteger(Thunk.Parent));
error(IO.mapInteger(Thunk.End));
error(IO.mapInteger(Thunk.Next));
error(IO.mapInteger(Thunk.Offset));
error(IO.mapInteger(Thunk.Segment));
error(IO.mapInteger(Thunk.Length));
error(IO.mapEnum(Thunk.Thunk));
error(IO.mapStringZ(Thunk.Name));
error(IO.mapByteVectorTail(Thunk.VariantData));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
TrampolineSym &Tramp) {
error(IO.mapEnum(Tramp.Type));
error(IO.mapInteger(Tramp.Size));
error(IO.mapInteger(Tramp.ThunkOffset));
error(IO.mapInteger(Tramp.TargetOffset));
error(IO.mapInteger(Tramp.ThunkSection));
error(IO.mapInteger(Tramp.TargetSection));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
SectionSym &Section) {
uint8_t Padding = 0;
error(IO.mapInteger(Section.SectionNumber));
error(IO.mapInteger(Section.Alignment));
error(IO.mapInteger(Padding));
error(IO.mapInteger(Section.Rva));
error(IO.mapInteger(Section.Length));
error(IO.mapInteger(Section.Characteristics));
error(IO.mapStringZ(Section.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
CoffGroupSym &CoffGroup) {
error(IO.mapInteger(CoffGroup.Size));
error(IO.mapInteger(CoffGroup.Characteristics));
error(IO.mapInteger(CoffGroup.Offset));
error(IO.mapInteger(CoffGroup.Segment));
error(IO.mapStringZ(CoffGroup.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
BPRelativeSym &BPRel) {
error(IO.mapInteger(BPRel.Offset));
error(IO.mapInteger(BPRel.Type));
error(IO.mapStringZ(BPRel.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
BuildInfoSym &BuildInfo) {
error(IO.mapInteger(BuildInfo.BuildId));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
CallSiteInfoSym &CallSiteInfo) {
uint16_t Padding = 0;
error(IO.mapInteger(CallSiteInfo.CodeOffset));
error(IO.mapInteger(CallSiteInfo.Segment));
error(IO.mapInteger(Padding));
error(IO.mapInteger(CallSiteInfo.Type));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
EnvBlockSym &EnvBlock) {
uint8_t Reserved = 0;
error(IO.mapInteger(Reserved));
error(IO.mapStringZVectorZ(EnvBlock.Fields));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
FileStaticSym &FileStatic) {
error(IO.mapInteger(FileStatic.Index));
error(IO.mapInteger(FileStatic.ModFilenameOffset));
error(IO.mapEnum(FileStatic.Flags));
error(IO.mapStringZ(FileStatic.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, ExportSym &Export) {
error(IO.mapInteger(Export.Ordinal));
error(IO.mapEnum(Export.Flags));
error(IO.mapStringZ(Export.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
Compile2Sym &Compile2) {
error(IO.mapEnum(Compile2.Flags));
error(IO.mapEnum(Compile2.Machine));
error(IO.mapInteger(Compile2.VersionFrontendMajor));
error(IO.mapInteger(Compile2.VersionFrontendMinor));
error(IO.mapInteger(Compile2.VersionFrontendBuild));
error(IO.mapInteger(Compile2.VersionBackendMajor));
error(IO.mapInteger(Compile2.VersionBackendMinor));
error(IO.mapInteger(Compile2.VersionBackendBuild));
error(IO.mapStringZ(Compile2.Version));
error(IO.mapStringZVectorZ(Compile2.ExtraStrings));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
Compile3Sym &Compile3) {
error(IO.mapEnum(Compile3.Flags));
error(IO.mapEnum(Compile3.Machine));
error(IO.mapInteger(Compile3.VersionFrontendMajor));
error(IO.mapInteger(Compile3.VersionFrontendMinor));
error(IO.mapInteger(Compile3.VersionFrontendBuild));
error(IO.mapInteger(Compile3.VersionFrontendQFE));
error(IO.mapInteger(Compile3.VersionBackendMajor));
error(IO.mapInteger(Compile3.VersionBackendMinor));
error(IO.mapInteger(Compile3.VersionBackendBuild));
error(IO.mapInteger(Compile3.VersionBackendQFE));
error(IO.mapStringZ(Compile3.Version));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
ConstantSym &Constant) {
error(IO.mapInteger(Constant.Type));
error(IO.mapEncodedInteger(Constant.Value));
error(IO.mapStringZ(Constant.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, DataSym &Data) {
error(IO.mapInteger(Data.Type));
error(IO.mapInteger(Data.DataOffset));
error(IO.mapInteger(Data.Segment));
error(IO.mapStringZ(Data.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, DefRangeFramePointerRelSym &DefRangeFramePointerRel) {
error(IO.mapInteger(DefRangeFramePointerRel.Offset));
error(mapLocalVariableAddrRange(IO, DefRangeFramePointerRel.Range));
error(IO.mapVectorTail(DefRangeFramePointerRel.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR,
DefRangeFramePointerRelFullScopeSym &DefRangeFramePointerRelFullScope) {
error(IO.mapInteger(DefRangeFramePointerRelFullScope.Offset));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, DefRangeRegisterRelSym &DefRangeRegisterRel) {
error(IO.mapObject(DefRangeRegisterRel.Hdr.Register));
error(IO.mapObject(DefRangeRegisterRel.Hdr.Flags));
error(IO.mapObject(DefRangeRegisterRel.Hdr.BasePointerOffset));
error(mapLocalVariableAddrRange(IO, DefRangeRegisterRel.Range));
error(IO.mapVectorTail(DefRangeRegisterRel.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, DefRangeRegisterSym &DefRangeRegister) {
error(IO.mapObject(DefRangeRegister.Hdr.Register));
error(IO.mapObject(DefRangeRegister.Hdr.MayHaveNoName));
error(mapLocalVariableAddrRange(IO, DefRangeRegister.Range));
error(IO.mapVectorTail(DefRangeRegister.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, DefRangeSubfieldRegisterSym &DefRangeSubfieldRegister) {
error(IO.mapObject(DefRangeSubfieldRegister.Hdr.Register));
error(IO.mapObject(DefRangeSubfieldRegister.Hdr.MayHaveNoName));
error(IO.mapObject(DefRangeSubfieldRegister.Hdr.OffsetInParent));
error(mapLocalVariableAddrRange(IO, DefRangeSubfieldRegister.Range));
error(IO.mapVectorTail(DefRangeSubfieldRegister.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, DefRangeSubfieldSym &DefRangeSubfield) {
error(IO.mapInteger(DefRangeSubfield.Program));
error(IO.mapInteger(DefRangeSubfield.OffsetInParent));
error(mapLocalVariableAddrRange(IO, DefRangeSubfield.Range));
error(IO.mapVectorTail(DefRangeSubfield.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
DefRangeSym &DefRange) {
error(IO.mapInteger(DefRange.Program));
error(mapLocalVariableAddrRange(IO, DefRange.Range));
error(IO.mapVectorTail(DefRange.Gaps, MapGap()));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
FrameCookieSym &FrameCookie) {
error(IO.mapInteger(FrameCookie.CodeOffset));
error(IO.mapInteger(FrameCookie.Register));
error(IO.mapInteger(FrameCookie.CookieKind));
error(IO.mapInteger(FrameCookie.Flags));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
FrameProcSym &FrameProc) {
error(IO.mapInteger(FrameProc.TotalFrameBytes));
error(IO.mapInteger(FrameProc.PaddingFrameBytes));
error(IO.mapInteger(FrameProc.OffsetToPadding));
error(IO.mapInteger(FrameProc.BytesOfCalleeSavedRegisters));
error(IO.mapInteger(FrameProc.OffsetOfExceptionHandler));
error(IO.mapInteger(FrameProc.SectionIdOfExceptionHandler));
error(IO.mapEnum(FrameProc.Flags));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(
CVSymbol &CVR, HeapAllocationSiteSym &HeapAllocSite) {
error(IO.mapInteger(HeapAllocSite.CodeOffset));
error(IO.mapInteger(HeapAllocSite.Segment));
error(IO.mapInteger(HeapAllocSite.CallInstructionSize));
error(IO.mapInteger(HeapAllocSite.Type));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
InlineSiteSym &InlineSite) {
error(IO.mapInteger(InlineSite.Parent));
error(IO.mapInteger(InlineSite.End));
error(IO.mapInteger(InlineSite.Inlinee));
error(IO.mapByteVectorTail(InlineSite.AnnotationData));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
RegisterSym &Register) {
error(IO.mapInteger(Register.Index));
error(IO.mapEnum(Register.Register));
error(IO.mapStringZ(Register.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
PublicSym32 &Public) {
error(IO.mapInteger(Public.Index));
error(IO.mapInteger(Public.Offset));
error(IO.mapInteger(Public.Segment));
error(IO.mapStringZ(Public.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
ProcRefSym &ProcRef) {
error(IO.mapInteger(ProcRef.SumName));
error(IO.mapInteger(ProcRef.SymOffset));
error(IO.mapInteger(ProcRef.Module));
error(IO.mapStringZ(ProcRef.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, LabelSym &Label) {
error(IO.mapInteger(Label.CodeOffset));
error(IO.mapInteger(Label.Segment));
error(IO.mapEnum(Label.Flags));
error(IO.mapStringZ(Label.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, LocalSym &Local) {
error(IO.mapInteger(Local.Type));
error(IO.mapEnum(Local.Flags));
error(IO.mapStringZ(Local.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
ObjNameSym &ObjName) {
error(IO.mapInteger(ObjName.Signature));
error(IO.mapStringZ(ObjName.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, ProcSym &Proc) {
error(IO.mapInteger(Proc.Parent));
error(IO.mapInteger(Proc.End));
error(IO.mapInteger(Proc.Next));
error(IO.mapInteger(Proc.CodeSize));
error(IO.mapInteger(Proc.DbgStart));
error(IO.mapInteger(Proc.DbgEnd));
error(IO.mapInteger(Proc.FunctionType));
error(IO.mapInteger(Proc.CodeOffset));
error(IO.mapInteger(Proc.Segment));
error(IO.mapEnum(Proc.Flags));
error(IO.mapStringZ(Proc.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
ScopeEndSym &ScopeEnd) {
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, CallerSym &Caller) {
error(IO.mapVectorN<uint32_t>(
Caller.Indices,
[](CodeViewRecordIO &IO, TypeIndex &N) { return IO.mapInteger(N); }));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
RegRelativeSym &RegRel) {
error(IO.mapInteger(RegRel.Offset));
error(IO.mapInteger(RegRel.Type));
error(IO.mapInteger(RegRel.Register));
error(IO.mapStringZ(RegRel.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
ThreadLocalDataSym &Data) {
error(IO.mapInteger(Data.Type));
error(IO.mapInteger(Data.DataOffset));
error(IO.mapInteger(Data.Segment));
error(IO.mapStringZ(Data.Name));
return Error::success();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, UDTSym &UDT) {
error(IO.mapInteger(UDT.Type));
error(IO.mapStringZ(UDT.Name));
return Error::success();
}