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llvm-mirror/lib/DebugInfo/CodeView/SymbolRecordMapping.cpp
Reid Kleckner 06198ea6c1 [codeview] Add breaks to fix -Wimplicit-fallthrough
This is a minor bug fix. Previously, if you tried to encode the RSP
register on the x86 platform, that might have succeeded and been encoded
incorrectly. However, no existing producer or consumer passes the x86_64
registers when targeting x86_32.

llvm-svn: 345879
2018-11-01 19:36:29 +00:00

548 lines
16 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.mapEnum(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.mapEnum(Public.Flags));
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.mapEnum(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();
}
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
UsingNamespaceSym &UN) {
error(IO.mapStringZ(UN.Name));
return Error::success();
}
RegisterId codeview::decodeFramePtrReg(EncodedFramePtrReg EncodedReg,
CPUType CPU) {
assert(unsigned(EncodedReg) < 4);
switch (CPU) {
// FIXME: Add ARM and AArch64 variants here.
default:
break;
case CPUType::Intel8080:
case CPUType::Intel8086:
case CPUType::Intel80286:
case CPUType::Intel80386:
case CPUType::Intel80486:
case CPUType::Pentium:
case CPUType::PentiumPro:
case CPUType::Pentium3:
switch (EncodedReg) {
case EncodedFramePtrReg::None: return RegisterId::NONE;
case EncodedFramePtrReg::StackPtr: return RegisterId::VFRAME;
case EncodedFramePtrReg::FramePtr: return RegisterId::EBP;
case EncodedFramePtrReg::BasePtr: return RegisterId::EBX;
}
llvm_unreachable("bad encoding");
case CPUType::X64:
switch (EncodedReg) {
case EncodedFramePtrReg::None: return RegisterId::NONE;
case EncodedFramePtrReg::StackPtr: return RegisterId::RSP;
case EncodedFramePtrReg::FramePtr: return RegisterId::RBP;
case EncodedFramePtrReg::BasePtr: return RegisterId::R13;
}
llvm_unreachable("bad encoding");
}
return RegisterId::NONE;
}
EncodedFramePtrReg codeview::encodeFramePtrReg(RegisterId Reg, CPUType CPU) {
switch (CPU) {
// FIXME: Add ARM and AArch64 variants here.
default:
break;
case CPUType::Intel8080:
case CPUType::Intel8086:
case CPUType::Intel80286:
case CPUType::Intel80386:
case CPUType::Intel80486:
case CPUType::Pentium:
case CPUType::PentiumPro:
case CPUType::Pentium3:
switch (Reg) {
case RegisterId::VFRAME:
return EncodedFramePtrReg::StackPtr;
case RegisterId::EBP:
return EncodedFramePtrReg::FramePtr;
case RegisterId::EBX:
return EncodedFramePtrReg::BasePtr;
default:
break;
}
break;
case CPUType::X64:
switch (Reg) {
case RegisterId::RSP:
return EncodedFramePtrReg::StackPtr;
case RegisterId::RBP:
return EncodedFramePtrReg::FramePtr;
case RegisterId::R13:
return EncodedFramePtrReg::BasePtr;
default:
break;
}
break;
}
return EncodedFramePtrReg::None;
}