1 files changed, 0 insertions, 426 deletions
diff --git a/contrib/llvm/lib/DebugInfo/PDB/Raw/DbiStream.cpp b/contrib/llvm/lib/DebugInfo/PDB/Raw/DbiStream.cpp
deleted file mode 100644
index 4f4a0cf..0000000
--- a/contrib/llvm/lib/DebugInfo/PDB/Raw/DbiStream.cpp
+++ /dev/null
@@ -1,426 +0,0 @@
-//===- DbiStream.cpp - PDB Dbi Stream (Stream 3) Access -------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/StringRef.h"
-#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
-#include "llvm/DebugInfo/MSF/StreamArray.h"
-#include "llvm/DebugInfo/MSF/StreamReader.h"
-#include "llvm/DebugInfo/PDB/PDBTypes.h"
-#include "llvm/DebugInfo/PDB/Raw/DbiStream.h"
-#include "llvm/DebugInfo/PDB/Raw/ISectionContribVisitor.h"
-#include "llvm/DebugInfo/PDB/Raw/InfoStream.h"
-#include "llvm/DebugInfo/PDB/Raw/ModInfo.h"
-#include "llvm/DebugInfo/PDB/Raw/NameHashTable.h"
-#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
-#include "llvm/DebugInfo/PDB/Raw/RawConstants.h"
-#include "llvm/DebugInfo/PDB/Raw/RawError.h"
-#include "llvm/DebugInfo/PDB/Raw/RawTypes.h"
-#include "llvm/Object/COFF.h"
-#include "llvm/Support/Error.h"
-#include <algorithm>
-#include <cstddef>
-#include <cstdint>
-
-using namespace llvm;
-using namespace llvm::codeview;
-using namespace llvm::msf;
-using namespace llvm::pdb;
-using namespace llvm::support;
-
-template <typename ContribType>
-static Error loadSectionContribs(FixedStreamArray<ContribType> &Output,
-                                 StreamReader &Reader) {
-  if (Reader.bytesRemaining() % sizeof(ContribType) != 0)
-    return make_error<RawError>(
-        raw_error_code::corrupt_file,
-        "Invalid number of bytes of section contributions");
-
-  uint32_t Count = Reader.bytesRemaining() / sizeof(ContribType);
-  if (auto EC = Reader.readArray(Output, Count))
-    return EC;
-  return Error::success();
-}
-
-DbiStream::DbiStream(PDBFile &File, std::unique_ptr<MappedBlockStream> Stream)
-    : Pdb(File), Stream(std::move(Stream)), Header(nullptr) {
-}
-
-DbiStream::~DbiStream() = default;
-
-Error DbiStream::reload() {
-  StreamReader Reader(*Stream);
-
-  if (Stream->getLength() < sizeof(DbiStreamHeader))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI Stream does not contain a header.");
-  if (auto EC = Reader.readObject(Header))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI Stream does not contain a header.");
-
-  if (Header->VersionSignature != -1)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Invalid DBI version signature.");
-
-  // Require at least version 7, which should be present in all PDBs
-  // produced in the last decade and allows us to avoid having to
-  // special case all kinds of complicated arcane formats.
-  if (Header->VersionHeader < PdbDbiV70)
-    return make_error<RawError>(raw_error_code::feature_unsupported,
-                                "Unsupported DBI version.");
-
-  auto IS = Pdb.getPDBInfoStream();
-  if (!IS)
-    return IS.takeError();
-
-  if (Header->Age != IS->getAge())
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI Age does not match PDB Age.");
-
-  if (Stream->getLength() !=
-      sizeof(DbiStreamHeader) + Header->ModiSubstreamSize +
-          Header->SecContrSubstreamSize + Header->SectionMapSize +
-          Header->FileInfoSize + Header->TypeServerSize +
-          Header->OptionalDbgHdrSize + Header->ECSubstreamSize)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI Length does not equal sum of substreams.");
-
-  // Only certain substreams are guaranteed to be aligned.  Validate
-  // them here.
-  if (Header->ModiSubstreamSize % sizeof(uint32_t) != 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI MODI substream not aligned.");
-  if (Header->SecContrSubstreamSize % sizeof(uint32_t) != 0)
-    return make_error<RawError>(
-        raw_error_code::corrupt_file,
-        "DBI section contribution substream not aligned.");
-  if (Header->SectionMapSize % sizeof(uint32_t) != 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI section map substream not aligned.");
-  if (Header->FileInfoSize % sizeof(uint32_t) != 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI file info substream not aligned.");
-  if (Header->TypeServerSize % sizeof(uint32_t) != 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "DBI type server substream not aligned.");
-
-  if (auto EC =
-          Reader.readStreamRef(ModInfoSubstream, Header->ModiSubstreamSize))
-    return EC;
-  if (auto EC = initializeModInfoArray())
-    return EC;
-
-  if (auto EC = Reader.readStreamRef(SecContrSubstream,
-                                     Header->SecContrSubstreamSize))
-    return EC;
-  if (auto EC = Reader.readStreamRef(SecMapSubstream, Header->SectionMapSize))
-    return EC;
-  if (auto EC = Reader.readStreamRef(FileInfoSubstream, Header->FileInfoSize))
-    return EC;
-  if (auto EC =
-          Reader.readStreamRef(TypeServerMapSubstream, Header->TypeServerSize))
-    return EC;
-  if (auto EC = Reader.readStreamRef(ECSubstream, Header->ECSubstreamSize))
-    return EC;
-  if (auto EC = Reader.readArray(DbgStreams, Header->OptionalDbgHdrSize /
-                                                 sizeof(ulittle16_t)))
-    return EC;
-
-  if (auto EC = initializeSectionContributionData())
-    return EC;
-  if (auto EC = initializeSectionHeadersData())
-    return EC;
-  if (auto EC = initializeSectionMapData())
-    return EC;
-  if (auto EC = initializeFileInfo())
-    return EC;
-  if (auto EC = initializeFpoRecords())
-    return EC;
-
-  if (Reader.bytesRemaining() > 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Found unexpected bytes in DBI Stream.");
-
-  if (ECSubstream.getLength() > 0) {
-    StreamReader ECReader(ECSubstream);
-    if (auto EC = ECNames.load(ECReader))
-      return EC;
-  }
-
-  return Error::success();
-}
-
-PdbRaw_DbiVer DbiStream::getDbiVersion() const {
-  uint32_t Value = Header->VersionHeader;
-  return static_cast<PdbRaw_DbiVer>(Value);
-}
-
-uint32_t DbiStream::getAge() const { return Header->Age; }
-
-uint16_t DbiStream::getPublicSymbolStreamIndex() const {
-  return Header->PublicSymbolStreamIndex;
-}
-
-uint16_t DbiStream::getGlobalSymbolStreamIndex() const {
-  return Header->GlobalSymbolStreamIndex;
-}
-
-uint16_t DbiStream::getFlags() const { return Header->Flags; }
-
-bool DbiStream::isIncrementallyLinked() const {
-  return (Header->Flags & DbiFlags::FlagIncrementalMask) != 0;
-}
-
-bool DbiStream::hasCTypes() const {
-  return (Header->Flags & DbiFlags::FlagHasCTypesMask) != 0;
-}
-
-bool DbiStream::isStripped() const {
-  return (Header->Flags & DbiFlags::FlagStrippedMask) != 0;
-}
-
-uint16_t DbiStream::getBuildNumber() const { return Header->BuildNumber; }
-
-uint16_t DbiStream::getBuildMajorVersion() const {
-  return (Header->BuildNumber & DbiBuildNo::BuildMajorMask) >>
-         DbiBuildNo::BuildMajorShift;
-}
-
-uint16_t DbiStream::getBuildMinorVersion() const {
-  return (Header->BuildNumber & DbiBuildNo::BuildMinorMask) >>
-         DbiBuildNo::BuildMinorShift;
-}
-
-uint16_t DbiStream::getPdbDllRbld() const { return Header->PdbDllRbld; }
-
-uint32_t DbiStream::getPdbDllVersion() const { return Header->PdbDllVersion; }
-
-uint32_t DbiStream::getSymRecordStreamIndex() const {
-  return Header->SymRecordStreamIndex;
-}
-
-PDB_Machine DbiStream::getMachineType() const {
-  uint16_t Machine = Header->MachineType;
-  return static_cast<PDB_Machine>(Machine);
-}
-
-msf::FixedStreamArray<object::coff_section> DbiStream::getSectionHeaders() {
-  return SectionHeaders;
-}
-
-msf::FixedStreamArray<object::FpoData> DbiStream::getFpoRecords() {
-  return FpoRecords;
-}
-
-ArrayRef<ModuleInfoEx> DbiStream::modules() const { return ModuleInfos; }
-msf::FixedStreamArray<SecMapEntry> DbiStream::getSectionMap() const {
-  return SectionMap;
-}
-
-void DbiStream::visitSectionContributions(
-    ISectionContribVisitor &Visitor) const {
-  if (SectionContribVersion == DbiSecContribVer60) {
-    for (auto &SC : SectionContribs)
-      Visitor.visit(SC);
-  } else if (SectionContribVersion == DbiSecContribV2) {
-    for (auto &SC : SectionContribs2)
-      Visitor.visit(SC);
-  }
-}
-
-Error DbiStream::initializeSectionContributionData() {
-  if (SecContrSubstream.getLength() == 0)
-    return Error::success();
-
-  StreamReader SCReader(SecContrSubstream);
-  if (auto EC = SCReader.readEnum(SectionContribVersion))
-    return EC;
-
-  if (SectionContribVersion == DbiSecContribVer60)
-    return loadSectionContribs<SectionContrib>(SectionContribs, SCReader);
-  if (SectionContribVersion == DbiSecContribV2)
-    return loadSectionContribs<SectionContrib2>(SectionContribs2, SCReader);
-
-  return make_error<RawError>(raw_error_code::feature_unsupported,
-                              "Unsupported DBI Section Contribution version");
-}
-
-Error DbiStream::initializeModInfoArray() {
-  if (ModInfoSubstream.getLength() == 0)
-    return Error::success();
-
-  // Since each ModInfo in the stream is a variable length, we have to iterate
-  // them to know how many there actually are.
-  StreamReader Reader(ModInfoSubstream);
-
-  VarStreamArray<ModInfo> ModInfoArray;
-  if (auto EC = Reader.readArray(ModInfoArray, ModInfoSubstream.getLength()))
-    return EC;
-  for (auto &Info : ModInfoArray) {
-    ModuleInfos.emplace_back(Info);
-  }
-
-  return Error::success();
-}
-
-// Initializes this->SectionHeaders.
-Error DbiStream::initializeSectionHeadersData() {
-  if (DbgStreams.size() == 0)
-    return Error::success();
-
-  uint32_t StreamNum = getDebugStreamIndex(DbgHeaderType::SectionHdr);
-  if (StreamNum >= Pdb.getNumStreams())
-    return make_error<RawError>(raw_error_code::no_stream);
-
-  auto SHS = MappedBlockStream::createIndexedStream(
-      Pdb.getMsfLayout(), Pdb.getMsfBuffer(), StreamNum);
-
-  size_t StreamLen = SHS->getLength();
-  if (StreamLen % sizeof(object::coff_section))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Corrupted section header stream.");
-
-  size_t NumSections = StreamLen / sizeof(object::coff_section);
-  msf::StreamReader Reader(*SHS);
-  if (auto EC = Reader.readArray(SectionHeaders, NumSections))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Could not read a bitmap.");
-
-  SectionHeaderStream = std::move(SHS);
-  return Error::success();
-}
-
-// Initializes this->Fpos.
-Error DbiStream::initializeFpoRecords() {
-  if (DbgStreams.size() == 0)
-    return Error::success();
-
-  uint32_t StreamNum = getDebugStreamIndex(DbgHeaderType::NewFPO);
-
-  // This means there is no FPO data.
-  if (StreamNum == kInvalidStreamIndex)
-    return Error::success();
-
-  if (StreamNum >= Pdb.getNumStreams())
-    return make_error<RawError>(raw_error_code::no_stream);
-
-  auto FS = MappedBlockStream::createIndexedStream(
-      Pdb.getMsfLayout(), Pdb.getMsfBuffer(), StreamNum);
-
-  size_t StreamLen = FS->getLength();
-  if (StreamLen % sizeof(object::FpoData))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Corrupted New FPO stream.");
-
-  size_t NumRecords = StreamLen / sizeof(object::FpoData);
-  msf::StreamReader Reader(*FS);
-  if (auto EC = Reader.readArray(FpoRecords, NumRecords))
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Corrupted New FPO stream.");
-  FpoStream = std::move(FS);
-  return Error::success();
-}
-
-Error DbiStream::initializeSectionMapData() {
-  if (SecMapSubstream.getLength() == 0)
-    return Error::success();
-
-  StreamReader SMReader(SecMapSubstream);
-  const SecMapHeader *Header;
-  if (auto EC = SMReader.readObject(Header))
-    return EC;
-  if (auto EC = SMReader.readArray(SectionMap, Header->SecCount))
-    return EC;
-  return Error::success();
-}
-
-Error DbiStream::initializeFileInfo() {
-  if (FileInfoSubstream.getLength() == 0)
-    return Error::success();
-
-  const FileInfoSubstreamHeader *FH;
-  StreamReader FISR(FileInfoSubstream);
-  if (auto EC = FISR.readObject(FH))
-    return EC;
-
-  // The number of modules in the stream should be the same as reported by
-  // the FileInfoSubstreamHeader.
-  if (FH->NumModules != ModuleInfos.size())
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "FileInfo substream count doesn't match DBI.");
-
-  FixedStreamArray<ulittle16_t> ModIndexArray;
-  FixedStreamArray<ulittle16_t> ModFileCountArray;
-
-  // First is an array of `NumModules` module indices.  This is not used for the
-  // same reason that `NumSourceFiles` is not used.  It's an array of uint16's,
-  // but it's possible there are more than 64k source files, which would imply
-  // more than 64k modules (e.g. object files) as well.  So we ignore this
-  // field.
-  if (auto EC = FISR.readArray(ModIndexArray, ModuleInfos.size()))
-    return EC;
-  if (auto EC = FISR.readArray(ModFileCountArray, ModuleInfos.size()))
-    return EC;
-
-  // Compute the real number of source files.
-  uint32_t NumSourceFiles = 0;
-  for (auto Count : ModFileCountArray)
-    NumSourceFiles += Count;
-
-  // This is the array that in the reference implementation corresponds to
-  // `ModInfo::FileLayout::FileNameOffs`, which is commented there as being a
-  // pointer. Due to the mentioned problems of pointers causing difficulty
-  // when reading from the file on 64-bit systems, we continue to ignore that
-  // field in `ModInfo`, and instead build a vector of StringRefs and stores
-  // them in `ModuleInfoEx`.  The value written to and read from the file is
-  // not used anyway, it is only there as a way to store the offsets for the
-  // purposes of later accessing the names at runtime.
-  if (auto EC = FISR.readArray(FileNameOffsets, NumSourceFiles))
-    return EC;
-
-  if (auto EC = FISR.readStreamRef(NamesBuffer))
-    return EC;
-
-  // We go through each ModuleInfo, determine the number N of source files for
-  // that module, and then get the next N offsets from the Offsets array, using
-  // them to get the corresponding N names from the Names buffer and associating
-  // each one with the corresponding module.
-  uint32_t NextFileIndex = 0;
-  for (size_t I = 0; I < ModuleInfos.size(); ++I) {
-    uint32_t NumFiles = ModFileCountArray[I];
-    ModuleInfos[I].SourceFiles.resize(NumFiles);
-    for (size_t J = 0; J < NumFiles; ++J, ++NextFileIndex) {
-      auto ThisName = getFileNameForIndex(NextFileIndex);
-      if (!ThisName)
-        return ThisName.takeError();
-      ModuleInfos[I].SourceFiles[J] = *ThisName;
-    }
-  }
-
-  return Error::success();
-}
-
-uint32_t DbiStream::getDebugStreamIndex(DbgHeaderType Type) const {
-  uint16_t T = static_cast<uint16_t>(Type);
-  if (T >= DbgStreams.size())
-    return kInvalidStreamIndex;
-  return DbgStreams[T];
-}
-
-Expected<StringRef> DbiStream::getFileNameForIndex(uint32_t Index) const {
-  StreamReader Names(NamesBuffer);
-  if (Index >= FileNameOffsets.size())
-    return make_error<RawError>(raw_error_code::index_out_of_bounds);
-
-  uint32_t FileOffset = FileNameOffsets[Index];
-  Names.setOffset(FileOffset);
-  StringRef Name;
-  if (auto EC = Names.readZeroString(Name))
-    return std::move(EC);
-  return Name;
-}