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#include "llvm/DebugInfo/PDB/Raw/TpiStreamBuilder.h"
#include "llvm/DebugInfo/CodeView/TypeIndex.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
#include "llvm/DebugInfo/MSF/StreamWriter.h"
#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
#include "llvm/DebugInfo/PDB/Raw/RawError.h"
#include "llvm/DebugInfo/PDB/Raw/TpiStream.h"
#include "llvm/Support/Allocator.h"
using namespace llvm;
using namespace llvm::msf;
using namespace llvm::pdb;
using namespace llvm::support;
TpiStreamBuilder::TpiStreamBuilder(BumpPtrAllocator &Allocator)
: Allocator(Allocator), Header(nullptr) {}
TpiStreamBuilder::~TpiStreamBuilder() {}
void TpiStreamBuilder::setVersionHeader(PdbRaw_TpiVer Version) {
VerHeader = Version;
}
void TpiStreamBuilder::addTypeRecord(const codeview::CVType &Record) {
TypeRecords.push_back(Record);
TypeRecordStream.setItems(TypeRecords);
}
Error TpiStreamBuilder::finalize() {
if (Header)
return Error::success();
TpiStreamHeader *H = Allocator.Allocate<TpiStreamHeader>();
uint32_t Count = TypeRecords.size();
H->Version = *VerHeader;
H->HeaderSize = sizeof(TpiStreamHeader);
H->TypeIndexBegin = codeview::TypeIndex::FirstNonSimpleIndex;
H->TypeIndexEnd = H->TypeIndexBegin + Count;
H->TypeRecordBytes = TypeRecordStream.getLength();
H->HashStreamIndex = kInvalidStreamIndex;
H->HashAuxStreamIndex = kInvalidStreamIndex;
H->HashKeySize = sizeof(ulittle32_t);
H->NumHashBuckets = MinTpiHashBuckets;
H->HashValueBuffer.Length = 0;
H->HashAdjBuffer.Length = 0;
H->IndexOffsetBuffer.Length = 0;
Header = H;
return Error::success();
}
uint32_t TpiStreamBuilder::calculateSerializedLength() const {
return sizeof(TpiStreamHeader) + TypeRecordStream.getLength();
}
Expected<std::unique_ptr<TpiStream>>
TpiStreamBuilder::build(PDBFile &File, const msf::WritableStream &Buffer) {
if (!VerHeader.hasValue())
return make_error<RawError>(raw_error_code::unspecified,
"Missing TPI Stream Version");
if (auto EC = finalize())
return std::move(EC);
auto StreamData = MappedBlockStream::createIndexedStream(File.getMsfLayout(),
Buffer, StreamTPI);
auto Tpi = llvm::make_unique<TpiStream>(File, std::move(StreamData));
Tpi->Header = Header;
Tpi->TypeRecords = VarStreamArray<codeview::CVType>(TypeRecordStream);
return std::move(Tpi);
}
Error TpiStreamBuilder::commit(const msf::MSFLayout &Layout,
const msf::WritableStream &Buffer) {
if (auto EC = finalize())
return EC;
auto InfoS =
WritableMappedBlockStream::createIndexedStream(Layout, Buffer, StreamTPI);
StreamWriter Writer(*InfoS);
if (auto EC = Writer.writeObject(*Header))
return EC;
auto RecordArray = VarStreamArray<codeview::CVType>(TypeRecordStream);
if (auto EC = Writer.writeArray(RecordArray))
return EC;
return Error::success();
}
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