1 //===- InfoStreamBuilder.cpp - PDB Info Stream Creation ---------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/DebugInfo/PDB/Native/InfoStreamBuilder.h" 10 11 #include "llvm/DebugInfo/MSF/MSFBuilder.h" 12 #include "llvm/DebugInfo/MSF/MappedBlockStream.h" 13 #include "llvm/DebugInfo/PDB/Native/InfoStream.h" 14 #include "llvm/DebugInfo/PDB/Native/NamedStreamMap.h" 15 #include "llvm/DebugInfo/PDB/Native/PDBFileBuilder.h" 16 #include "llvm/DebugInfo/PDB/Native/RawError.h" 17 #include "llvm/DebugInfo/PDB/Native/RawTypes.h" 18 #include "llvm/Support/BinaryStreamWriter.h" 19 20 using namespace llvm; 21 using namespace llvm::codeview; 22 using namespace llvm::msf; 23 using namespace llvm::pdb; 24 25 InfoStreamBuilder::InfoStreamBuilder(msf::MSFBuilder &Msf, 26 NamedStreamMap &NamedStreams) 27 : Msf(Msf), Ver(PdbRaw_ImplVer::PdbImplVC70), Age(0), 28 NamedStreams(NamedStreams) { 29 ::memset(&Guid, 0, sizeof(Guid)); 30 } 31 32 void InfoStreamBuilder::setVersion(PdbRaw_ImplVer V) { Ver = V; } 33 34 void InfoStreamBuilder::addFeature(PdbRaw_FeatureSig Sig) { 35 Features.push_back(Sig); 36 } 37 38 void InfoStreamBuilder::setHashPDBContentsToGUID(bool B) { 39 HashPDBContentsToGUID = B; 40 } 41 42 void InfoStreamBuilder::setAge(uint32_t A) { Age = A; } 43 44 void InfoStreamBuilder::setSignature(uint32_t S) { Signature = S; } 45 46 void InfoStreamBuilder::setGuid(GUID G) { Guid = G; } 47 48 49 Error InfoStreamBuilder::finalizeMsfLayout() { 50 uint32_t Length = sizeof(InfoStreamHeader) + 51 NamedStreams.calculateSerializedLength() + 52 (Features.size() + 1) * sizeof(uint32_t); 53 if (auto EC = Msf.setStreamSize(StreamPDB, Length)) 54 return EC; 55 return Error::success(); 56 } 57 58 Error InfoStreamBuilder::commit(const msf::MSFLayout &Layout, 59 WritableBinaryStreamRef Buffer) const { 60 auto InfoS = WritableMappedBlockStream::createIndexedStream( 61 Layout, Buffer, StreamPDB, Msf.getAllocator()); 62 BinaryStreamWriter Writer(*InfoS); 63 64 InfoStreamHeader H; 65 // Leave the build id fields 0 so they can be set as the last step before 66 // committing the file to disk. 67 ::memset(&H, 0, sizeof(H)); 68 H.Version = Ver; 69 if (auto EC = Writer.writeObject(H)) 70 return EC; 71 72 if (auto EC = NamedStreams.commit(Writer)) 73 return EC; 74 if (auto EC = Writer.writeInteger(0)) 75 return EC; 76 for (auto E : Features) { 77 if (auto EC = Writer.writeEnum(E)) 78 return EC; 79 } 80 assert(Writer.bytesRemaining() == 0); 81 return Error::success(); 82 } 83