1 //===- DbiStreamBuilder.cpp - PDB Dbi Stream Creation -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/DebugInfo/PDB/Native/PublicsStreamBuilder.h"
12 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
13 #include "llvm/DebugInfo/MSF/MSFCommon.h"
14 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
19 using namespace llvm::msf;
20 using namespace llvm::pdb;
22 PublicsStreamBuilder::PublicsStreamBuilder(msf::MSFBuilder &Msf) : Msf(Msf) {}
24 PublicsStreamBuilder::~PublicsStreamBuilder() {}
26 uint32_t PublicsStreamBuilder::calculateSerializedLength() const {
28 Size += sizeof(PublicsStreamHeader);
29 Size += sizeof(GSIHashHeader);
30 Size += HashRecords.size() * sizeof(PSHashRecord);
31 size_t BitmapSizeInBits = alignTo(IPHR_HASH + 1, 32);
32 uint32_t NumBitmapEntries = BitmapSizeInBits / 8;
33 Size += NumBitmapEntries;
35 // FIXME: Account for hash buckets. For now since we we write a zero-bitmap
36 // indicating that no hash buckets are valid, we also write zero byets of hash
42 Error PublicsStreamBuilder::finalizeMsfLayout() {
43 Expected<uint32_t> Idx = Msf.addStream(calculateSerializedLength());
45 return Idx.takeError();
48 Expected<uint32_t> RecordIdx = Msf.addStream(0);
50 return RecordIdx.takeError();
51 RecordStreamIdx = *RecordIdx;
52 return Error::success();
55 Error PublicsStreamBuilder::commit(BinaryStreamWriter &PublicsWriter) {
56 PublicsStreamHeader PSH;
59 // FIXME: Figure out what to put for these values.
61 PSH.ISectThunkTable = 0;
64 PSH.OffThunkTable = 0;
68 GSH.VerSignature = GSIHashHeader::HdrSignature;
69 GSH.VerHdr = GSIHashHeader::HdrVersion;
73 if (auto EC = PublicsWriter.writeObject(PSH))
75 if (auto EC = PublicsWriter.writeObject(GSH))
77 if (auto EC = PublicsWriter.writeArray(makeArrayRef(HashRecords)))
80 size_t BitmapSizeInBits = alignTo(IPHR_HASH + 1, 32);
81 uint32_t NumBitmapEntries = BitmapSizeInBits / 8;
82 std::vector<uint8_t> BitmapData(NumBitmapEntries);
83 // FIXME: Build an actual bitmap
84 if (auto EC = PublicsWriter.writeBytes(makeArrayRef(BitmapData)))
87 // FIXME: Write actual hash buckets.
88 return Error::success();