1 files changed, 57 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/Raw/InfoStream.cpp b/llvm/lib/DebugInfo/PDB/Raw/InfoStream.cpp
new file mode 100644
index 00000000000..c1b4737f21f
--- /dev/null
+++ b/llvm/lib/DebugInfo/PDB/Raw/InfoStream.cpp
@@ -0,0 +1,57 @@
+//===- InfoStream.cpp - PDB Info Stream (Stream 1) Access -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/Raw/InfoStream.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/DebugInfo/PDB/Raw/StreamReader.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+
+InfoStream::InfoStream(PDBFile &File) : Pdb(File), Stream(1, File) {}
+
+std::error_code InfoStream::reload() {
+  StreamReader Reader(Stream);
+
+  support::ulittle32_t Value;
+
+  Reader.readObject(&Value);
+  Version = Value;
+  if (Version < PdbRaw_ImplVer::PdbImplVC70)
+    return std::make_error_code(std::errc::not_supported);
+
+  Reader.readObject(&Value);
+  Signature = Value;
+
+  Reader.readObject(&Value);
+  Age = Value;
+
+  Reader.readObject(&Guid);
+  NamedStreams.load(Reader);
+
+  return std::error_code();
+}
+
+uint32_t InfoStream::getNamedStreamIndex(llvm::StringRef Name) const {
+  uint32_t Result;
+  if (!NamedStreams.tryGetValue(Name, Result))
+    return 0;
+  return Result;
+}
+
+PdbRaw_ImplVer InfoStream::getVersion() const {
+  return static_cast<PdbRaw_ImplVer>(Version);
+}
+
+uint32_t InfoStream::getSignature() const { return Signature; }
+
+uint32_t InfoStream::getAge() const { return Age; }
+
+PDB_UniqueId InfoStream::getGuid() const { return Guid; }