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7ba6356196
This was discovered when running `llvm-pdbdump diff` against two files, the second of which was generated by running the first one through pdb2yaml and then yaml2pdb. The second one was missing some bytes from the PDB Stream, and tracking this down showed that at the end of the PDB Stream were some additional bytes that we were ignoring. Looking back to the reference code, these seem to specify some additional flags that indicate whether the PDB supports various optional features. This patch adds support for reading, writing, and round-tripping these flags through YAML and the raw dumper, and updates the tests accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297984 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
//===- InfoStreamBuilder.cpp - PDB Info Stream Creation ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/PDB/Native/InfoStreamBuilder.h"
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#include "llvm/DebugInfo/MSF/MSFBuilder.h"
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#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
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#include "llvm/DebugInfo/PDB/Native/InfoStream.h"
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#include "llvm/DebugInfo/PDB/Native/NamedStreamMap.h"
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#include "llvm/DebugInfo/PDB/Native/PDBFileBuilder.h"
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#include "llvm/DebugInfo/PDB/Native/RawError.h"
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#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
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#include "llvm/Support/BinaryStreamWriter.h"
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using namespace llvm;
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using namespace llvm::codeview;
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using namespace llvm::msf;
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using namespace llvm::pdb;
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InfoStreamBuilder::InfoStreamBuilder(msf::MSFBuilder &Msf,
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NamedStreamMap &NamedStreams)
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: Msf(Msf), Ver(PdbRaw_ImplVer::PdbImplVC70), Sig(-1), Age(0),
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NamedStreams(NamedStreams) {}
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void InfoStreamBuilder::setVersion(PdbRaw_ImplVer V) { Ver = V; }
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void InfoStreamBuilder::setSignature(uint32_t S) { Sig = S; }
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void InfoStreamBuilder::setAge(uint32_t A) { Age = A; }
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void InfoStreamBuilder::setGuid(PDB_UniqueId G) { Guid = G; }
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void InfoStreamBuilder::addFeature(PdbRaw_FeatureSig Sig) {
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Features.push_back(Sig);
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}
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Error InfoStreamBuilder::finalizeMsfLayout() {
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uint32_t Length = sizeof(InfoStreamHeader) + NamedStreams.finalize() +
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(Features.size() + 1) * sizeof(uint32_t);
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if (auto EC = Msf.setStreamSize(StreamPDB, Length))
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return EC;
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return Error::success();
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}
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Error InfoStreamBuilder::commit(const msf::MSFLayout &Layout,
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WritableBinaryStreamRef Buffer) const {
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auto InfoS =
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WritableMappedBlockStream::createIndexedStream(Layout, Buffer, StreamPDB);
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BinaryStreamWriter Writer(*InfoS);
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InfoStreamHeader H;
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H.Age = Age;
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H.Signature = Sig;
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H.Version = Ver;
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H.Guid = Guid;
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if (auto EC = Writer.writeObject(H))
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return EC;
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if (auto EC = NamedStreams.commit(Writer))
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return EC;
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if (auto EC = Writer.writeInteger(0))
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return EC;
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for (auto E : Features) {
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if (auto EC = Writer.writeEnum(E))
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return EC;
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}
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return Error::success();
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}
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