1 //===- InfoStreamBuilder.cpp - PDB Info Stream Creation ---------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/DebugInfo/PDB/Native/InfoStreamBuilder.h"
11
12 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
13 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
14 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
15 #include "llvm/DebugInfo/PDB/Native/NamedStreamMap.h"
16 #include "llvm/DebugInfo/PDB/Native/PDBFileBuilder.h"
17 #include "llvm/DebugInfo/PDB/Native/RawError.h"
18 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
19 #include "llvm/Support/BinaryStreamWriter.h"
20
21 using namespace llvm;
22 using namespace llvm::codeview;
23 using namespace llvm::msf;
24 using namespace llvm::pdb;
25
InfoStreamBuilder(msf::MSFBuilder & Msf,NamedStreamMap & NamedStreams)26 InfoStreamBuilder::InfoStreamBuilder(msf::MSFBuilder &Msf,
27 NamedStreamMap &NamedStreams)
28 : Msf(Msf), Ver(PdbRaw_ImplVer::PdbImplVC70), Age(0),
29 NamedStreams(NamedStreams) {
30 ::memset(&Guid, 0, sizeof(Guid));
31 }
32
setVersion(PdbRaw_ImplVer V)33 void InfoStreamBuilder::setVersion(PdbRaw_ImplVer V) { Ver = V; }
34
setAge(uint32_t A)35 void InfoStreamBuilder::setAge(uint32_t A) { Age = A; }
36
setSignature(uint32_t S)37 void InfoStreamBuilder::setSignature(uint32_t S) { Signature = S; }
38
setGuid(GUID G)39 void InfoStreamBuilder::setGuid(GUID G) { Guid = G; }
40
addFeature(PdbRaw_FeatureSig Sig)41 void InfoStreamBuilder::addFeature(PdbRaw_FeatureSig Sig) {
42 Features.push_back(Sig);
43 }
44
finalizeMsfLayout()45 Error InfoStreamBuilder::finalizeMsfLayout() {
46 uint32_t Length = sizeof(InfoStreamHeader) +
47 NamedStreams.calculateSerializedLength() +
48 (Features.size() + 1) * sizeof(uint32_t);
49 if (auto EC = Msf.setStreamSize(StreamPDB, Length))
50 return EC;
51 return Error::success();
52 }
53
commit(const msf::MSFLayout & Layout,WritableBinaryStreamRef Buffer) const54 Error InfoStreamBuilder::commit(const msf::MSFLayout &Layout,
55 WritableBinaryStreamRef Buffer) const {
56 auto InfoS = WritableMappedBlockStream::createIndexedStream(
57 Layout, Buffer, StreamPDB, Msf.getAllocator());
58 BinaryStreamWriter Writer(*InfoS);
59
60 InfoStreamHeader H;
61 // Leave the build id fields 0 so they can be set as the last step before
62 // committing the file to disk.
63 ::memset(&H, 0, sizeof(H));
64 H.Version = Ver;
65 if (auto EC = Writer.writeObject(H))
66 return EC;
67
68 if (auto EC = NamedStreams.commit(Writer))
69 return EC;
70 if (auto EC = Writer.writeInteger(0))
71 return EC;
72 for (auto E : Features) {
73 if (auto EC = Writer.writeEnum(E))
74 return EC;
75 }
76 assert(Writer.bytesRemaining() == 0);
77 return Error::success();
78 }
79