9044b0f171
This adds support for `S_DEFRANGE_REGISTER_REL_INDIR` (as
`DefRangeRegisterRelIndirSym`).
It's to `S_REGREL32_INDIR` what `S_DEFRANGE_REGISTER_REL` is to
`S_REGREL32`. `S_REGREL32_INDIR` was added in #183172.
LLVM only generates `S_LOCAL` for variables and parameters, so we need
this record to specify a range where a variable is indirectly accessed.
I didn't find any PDB where this record is in, so I guessed the layout
based on `S_DEFRANGE_REGISTER_REL` and `S_REGREL32_INDIR`. Locally, I
updated LLVM to generate this where possible, and tested it with the VS
debugger and WinDBG. Both handled the record correctly. This PR doesn't
include the change to debug info generation yet - you can find the
current WIP in
884072fa17.
The name `OffsetInUdt` comes from DIA
([`get_offsetInUdt`](https://learn.microsoft.com/en-us/visualstudio/debugger/debug-interface-access/idiasymbol-get-offsetinudt?view=visualstudio)).
Given that this symbol also has a `offsetInParent`, I find the name a
bit confusing. When generating the record in the commit above, I used
the name `DerefOffset`. If we change it here, it should be changed in
`RegRelativeIndirSym` as well.
603 lines
19 KiB
C++
603 lines
19 KiB
C++
//===- SymbolRecordMapping.cpp -----------------------------------*- C++-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/CodeView/SymbolRecordMapping.h"
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using namespace llvm;
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using namespace llvm::codeview;
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#define error(X) \
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if (auto EC = X) \
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return EC;
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namespace {
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struct MapGap {
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Error operator()(CodeViewRecordIO &IO, LocalVariableAddrGap &Gap) const {
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error(IO.mapInteger(Gap.GapStartOffset));
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error(IO.mapInteger(Gap.Range));
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return Error::success();
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}
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};
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}
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static Error mapLocalVariableAddrRange(CodeViewRecordIO &IO,
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LocalVariableAddrRange &Range) {
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error(IO.mapInteger(Range.OffsetStart));
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error(IO.mapInteger(Range.ISectStart));
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error(IO.mapInteger(Range.Range));
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return Error::success();
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}
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Error SymbolRecordMapping::visitSymbolBegin(CVSymbol &Record) {
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error(IO.beginRecord(MaxRecordLength - sizeof(RecordPrefix)));
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return Error::success();
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}
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Error SymbolRecordMapping::visitSymbolEnd(CVSymbol &Record) {
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error(IO.padToAlignment(alignOf(Container)));
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error(IO.endRecord());
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, BlockSym &Block) {
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error(IO.mapInteger(Block.Parent));
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error(IO.mapInteger(Block.End));
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error(IO.mapInteger(Block.CodeSize));
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error(IO.mapInteger(Block.CodeOffset));
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error(IO.mapInteger(Block.Segment));
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error(IO.mapStringZ(Block.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, Thunk32Sym &Thunk) {
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error(IO.mapInteger(Thunk.Parent));
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error(IO.mapInteger(Thunk.End));
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error(IO.mapInteger(Thunk.Next));
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error(IO.mapInteger(Thunk.Offset));
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error(IO.mapInteger(Thunk.Segment));
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error(IO.mapInteger(Thunk.Length));
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error(IO.mapEnum(Thunk.Thunk));
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error(IO.mapStringZ(Thunk.Name));
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error(IO.mapByteVectorTail(Thunk.VariantData));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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TrampolineSym &Tramp) {
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error(IO.mapEnum(Tramp.Type));
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error(IO.mapInteger(Tramp.Size));
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error(IO.mapInteger(Tramp.ThunkOffset));
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error(IO.mapInteger(Tramp.TargetOffset));
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error(IO.mapInteger(Tramp.ThunkSection));
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error(IO.mapInteger(Tramp.TargetSection));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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SectionSym &Section) {
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uint8_t Padding = 0;
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error(IO.mapInteger(Section.SectionNumber));
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error(IO.mapInteger(Section.Alignment));
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error(IO.mapInteger(Padding));
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error(IO.mapInteger(Section.Rva));
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error(IO.mapInteger(Section.Length));
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error(IO.mapInteger(Section.Characteristics));
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error(IO.mapStringZ(Section.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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CoffGroupSym &CoffGroup) {
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error(IO.mapInteger(CoffGroup.Size));
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error(IO.mapInteger(CoffGroup.Characteristics));
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error(IO.mapInteger(CoffGroup.Offset));
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error(IO.mapInteger(CoffGroup.Segment));
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error(IO.mapStringZ(CoffGroup.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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BPRelativeSym &BPRel) {
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error(IO.mapInteger(BPRel.Offset));
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error(IO.mapInteger(BPRel.Type));
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error(IO.mapStringZ(BPRel.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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BuildInfoSym &BuildInfo) {
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error(IO.mapInteger(BuildInfo.BuildId));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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CallSiteInfoSym &CallSiteInfo) {
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uint16_t Padding = 0;
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error(IO.mapInteger(CallSiteInfo.CodeOffset));
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error(IO.mapInteger(CallSiteInfo.Segment));
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error(IO.mapInteger(Padding));
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error(IO.mapInteger(CallSiteInfo.Type));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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EnvBlockSym &EnvBlock) {
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uint8_t Reserved = 0;
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error(IO.mapInteger(Reserved));
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error(IO.mapStringZVectorZ(EnvBlock.Fields));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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FileStaticSym &FileStatic) {
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error(IO.mapInteger(FileStatic.Index));
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error(IO.mapInteger(FileStatic.ModFilenameOffset));
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error(IO.mapEnum(FileStatic.Flags));
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error(IO.mapStringZ(FileStatic.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, ExportSym &Export) {
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error(IO.mapInteger(Export.Ordinal));
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error(IO.mapEnum(Export.Flags));
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error(IO.mapStringZ(Export.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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Compile2Sym &Compile2) {
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error(IO.mapEnum(Compile2.Flags));
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error(IO.mapEnum(Compile2.Machine));
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error(IO.mapInteger(Compile2.VersionFrontendMajor));
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error(IO.mapInteger(Compile2.VersionFrontendMinor));
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error(IO.mapInteger(Compile2.VersionFrontendBuild));
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error(IO.mapInteger(Compile2.VersionBackendMajor));
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error(IO.mapInteger(Compile2.VersionBackendMinor));
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error(IO.mapInteger(Compile2.VersionBackendBuild));
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error(IO.mapStringZ(Compile2.Version));
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error(IO.mapStringZVectorZ(Compile2.ExtraStrings));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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Compile3Sym &Compile3) {
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error(IO.mapEnum(Compile3.Flags));
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error(IO.mapEnum(Compile3.Machine));
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error(IO.mapInteger(Compile3.VersionFrontendMajor));
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error(IO.mapInteger(Compile3.VersionFrontendMinor));
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error(IO.mapInteger(Compile3.VersionFrontendBuild));
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error(IO.mapInteger(Compile3.VersionFrontendQFE));
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error(IO.mapInteger(Compile3.VersionBackendMajor));
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error(IO.mapInteger(Compile3.VersionBackendMinor));
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error(IO.mapInteger(Compile3.VersionBackendBuild));
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error(IO.mapInteger(Compile3.VersionBackendQFE));
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error(IO.mapStringZ(Compile3.Version));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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ConstantSym &Constant) {
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error(IO.mapInteger(Constant.Type));
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error(IO.mapEncodedInteger(Constant.Value));
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error(IO.mapStringZ(Constant.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, DataSym &Data) {
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error(IO.mapInteger(Data.Type));
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error(IO.mapInteger(Data.DataOffset));
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error(IO.mapInteger(Data.Segment));
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error(IO.mapStringZ(Data.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeFramePointerRelSym &DefRangeFramePointerRel) {
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error(IO.mapObject(DefRangeFramePointerRel.Hdr.Offset));
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error(mapLocalVariableAddrRange(IO, DefRangeFramePointerRel.Range));
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error(IO.mapVectorTail(DefRangeFramePointerRel.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR,
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DefRangeFramePointerRelFullScopeSym &DefRangeFramePointerRelFullScope) {
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error(IO.mapInteger(DefRangeFramePointerRelFullScope.Offset));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeRegisterRelSym &DefRangeRegisterRel) {
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error(IO.mapObject(DefRangeRegisterRel.Hdr.Register));
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error(IO.mapObject(DefRangeRegisterRel.Hdr.Flags));
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error(IO.mapObject(DefRangeRegisterRel.Hdr.BasePointerOffset));
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error(mapLocalVariableAddrRange(IO, DefRangeRegisterRel.Range));
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error(IO.mapVectorTail(DefRangeRegisterRel.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeRegisterRelIndirSym &DefRangeRegisterRelIndir) {
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error(IO.mapObject(DefRangeRegisterRelIndir.Hdr.Register));
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error(IO.mapObject(DefRangeRegisterRelIndir.Hdr.Flags));
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error(IO.mapObject(DefRangeRegisterRelIndir.Hdr.BasePointerOffset));
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error(IO.mapObject(DefRangeRegisterRelIndir.Hdr.OffsetInUdt));
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error(mapLocalVariableAddrRange(IO, DefRangeRegisterRelIndir.Range));
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error(IO.mapVectorTail(DefRangeRegisterRelIndir.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeRegisterSym &DefRangeRegister) {
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error(IO.mapObject(DefRangeRegister.Hdr.Register));
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error(IO.mapObject(DefRangeRegister.Hdr.MayHaveNoName));
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error(mapLocalVariableAddrRange(IO, DefRangeRegister.Range));
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error(IO.mapVectorTail(DefRangeRegister.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeSubfieldRegisterSym &DefRangeSubfieldRegister) {
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error(IO.mapObject(DefRangeSubfieldRegister.Hdr.Register));
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error(IO.mapObject(DefRangeSubfieldRegister.Hdr.MayHaveNoName));
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error(IO.mapObject(DefRangeSubfieldRegister.Hdr.OffsetInParent));
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error(mapLocalVariableAddrRange(IO, DefRangeSubfieldRegister.Range));
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error(IO.mapVectorTail(DefRangeSubfieldRegister.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, DefRangeSubfieldSym &DefRangeSubfield) {
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error(IO.mapInteger(DefRangeSubfield.Program));
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error(IO.mapInteger(DefRangeSubfield.OffsetInParent));
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error(mapLocalVariableAddrRange(IO, DefRangeSubfield.Range));
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error(IO.mapVectorTail(DefRangeSubfield.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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DefRangeSym &DefRange) {
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error(IO.mapInteger(DefRange.Program));
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error(mapLocalVariableAddrRange(IO, DefRange.Range));
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error(IO.mapVectorTail(DefRange.Gaps, MapGap()));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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FrameCookieSym &FrameCookie) {
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error(IO.mapInteger(FrameCookie.CodeOffset));
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error(IO.mapInteger(FrameCookie.Register));
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error(IO.mapEnum(FrameCookie.CookieKind));
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error(IO.mapInteger(FrameCookie.Flags));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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FrameProcSym &FrameProc) {
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error(IO.mapInteger(FrameProc.TotalFrameBytes));
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error(IO.mapInteger(FrameProc.PaddingFrameBytes));
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error(IO.mapInteger(FrameProc.OffsetToPadding));
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error(IO.mapInteger(FrameProc.BytesOfCalleeSavedRegisters));
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error(IO.mapInteger(FrameProc.OffsetOfExceptionHandler));
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error(IO.mapInteger(FrameProc.SectionIdOfExceptionHandler));
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error(IO.mapEnum(FrameProc.Flags));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(
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CVSymbol &CVR, HeapAllocationSiteSym &HeapAllocSite) {
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error(IO.mapInteger(HeapAllocSite.CodeOffset));
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error(IO.mapInteger(HeapAllocSite.Segment));
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error(IO.mapInteger(HeapAllocSite.CallInstructionSize));
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error(IO.mapInteger(HeapAllocSite.Type));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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InlineSiteSym &InlineSite) {
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error(IO.mapInteger(InlineSite.Parent));
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error(IO.mapInteger(InlineSite.End));
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error(IO.mapInteger(InlineSite.Inlinee));
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error(IO.mapByteVectorTail(InlineSite.AnnotationData));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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RegisterSym &Register) {
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error(IO.mapInteger(Register.Index));
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error(IO.mapEnum(Register.Register));
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error(IO.mapStringZ(Register.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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PublicSym32 &Public) {
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error(IO.mapEnum(Public.Flags));
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error(IO.mapInteger(Public.Offset));
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error(IO.mapInteger(Public.Segment));
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error(IO.mapStringZ(Public.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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ProcRefSym &ProcRef) {
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error(IO.mapInteger(ProcRef.SumName));
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error(IO.mapInteger(ProcRef.SymOffset));
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error(IO.mapInteger(ProcRef.Module));
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error(IO.mapStringZ(ProcRef.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, LabelSym &Label) {
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error(IO.mapInteger(Label.CodeOffset));
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error(IO.mapInteger(Label.Segment));
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error(IO.mapEnum(Label.Flags));
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error(IO.mapStringZ(Label.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, LocalSym &Local) {
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error(IO.mapInteger(Local.Type));
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error(IO.mapEnum(Local.Flags));
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error(IO.mapStringZ(Local.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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ObjNameSym &ObjName) {
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error(IO.mapInteger(ObjName.Signature));
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error(IO.mapStringZ(ObjName.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, ProcSym &Proc) {
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error(IO.mapInteger(Proc.Parent));
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error(IO.mapInteger(Proc.End));
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error(IO.mapInteger(Proc.Next));
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error(IO.mapInteger(Proc.CodeSize));
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error(IO.mapInteger(Proc.DbgStart));
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error(IO.mapInteger(Proc.DbgEnd));
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error(IO.mapInteger(Proc.FunctionType));
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error(IO.mapInteger(Proc.CodeOffset));
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error(IO.mapInteger(Proc.Segment));
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error(IO.mapEnum(Proc.Flags));
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error(IO.mapStringZ(Proc.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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ScopeEndSym &ScopeEnd) {
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, CallerSym &Caller) {
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error(IO.mapVectorN<uint32_t>(
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Caller.Indices,
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[](CodeViewRecordIO &IO, TypeIndex &N) { return IO.mapInteger(N); }));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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RegRelativeSym &RegRel) {
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error(IO.mapInteger(RegRel.Offset));
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error(IO.mapInteger(RegRel.Type));
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error(IO.mapEnum(RegRel.Register));
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error(IO.mapStringZ(RegRel.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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RegRelativeIndirSym &RegRelIndir) {
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error(IO.mapInteger(RegRelIndir.Offset));
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error(IO.mapInteger(RegRelIndir.Type));
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error(IO.mapInteger(RegRelIndir.OffsetInUdt));
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error(IO.mapEnum(RegRelIndir.Register));
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error(IO.mapStringZ(RegRelIndir.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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ThreadLocalDataSym &Data) {
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error(IO.mapInteger(Data.Type));
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error(IO.mapInteger(Data.DataOffset));
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error(IO.mapInteger(Data.Segment));
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error(IO.mapStringZ(Data.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR, UDTSym &UDT) {
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error(IO.mapInteger(UDT.Type));
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error(IO.mapStringZ(UDT.Name));
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return Error::success();
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}
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Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
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UsingNamespaceSym &UN) {
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error(IO.mapStringZ(UN.Name));
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return Error::success();
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}
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|
|
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
|
|
AnnotationSym &Annot) {
|
|
|
|
error(IO.mapInteger(Annot.CodeOffset));
|
|
error(IO.mapInteger(Annot.Segment));
|
|
error(IO.mapVectorN<uint16_t>(
|
|
Annot.Strings,
|
|
[](CodeViewRecordIO &IO, StringRef &S) { return IO.mapStringZ(S); }));
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
|
|
JumpTableSym &JumpTable) {
|
|
error(IO.mapInteger(JumpTable.BaseOffset));
|
|
error(IO.mapInteger(JumpTable.BaseSegment));
|
|
error(IO.mapEnum(JumpTable.SwitchType));
|
|
error(IO.mapInteger(JumpTable.BranchOffset));
|
|
error(IO.mapInteger(JumpTable.TableOffset));
|
|
error(IO.mapInteger(JumpTable.BranchSegment));
|
|
error(IO.mapInteger(JumpTable.TableSegment));
|
|
error(IO.mapInteger(JumpTable.EntriesCount));
|
|
return Error::success();
|
|
}
|
|
|
|
Error SymbolRecordMapping::visitKnownRecord(CVSymbol &CVR,
|
|
HotPatchFuncSym &HotPatchFunc) {
|
|
error(IO.mapInteger(HotPatchFunc.Function));
|
|
error(IO.mapStringZ(HotPatchFunc.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;
|
|
}
|