2 files changed, 35 insertions, 0 deletions
diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index fbc38183bc..6cc8ab236a 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -48,6 +48,7 @@ add_llvm_library(LLVMSupport
   StringMap.cpp
   StringPool.cpp
   StringRef.cpp
+  StringRefMemoryObject.cpp
   SystemUtils.cpp
   Timer.cpp
   ToolOutputFile.cpp
diff --git a/lib/Support/StringRefMemoryObject.cpp b/lib/Support/StringRefMemoryObject.cpp
new file mode 100644
index 0000000000..5db11e918c
--- /dev/null
+++ b/lib/Support/StringRefMemoryObject.cpp
@@ -0,0 +1,34 @@
+//===- lib/Support/StringRefMemoryObject.cpp --------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/StringRefMemoryObject.h"
+
+using namespace llvm;
+
+int StringRefMemoryObject::readByte(uint64_t Addr, uint8_t *Byte) const {
+  if (Addr >= Base + getExtent() || Addr < Base)
+    return -1;
+  *Byte = Bytes[Addr - Base];
+  return 0;
+}
+
+int StringRefMemoryObject::readBytes(uint64_t Addr,
+                                     uint64_t Size,
+                                     uint8_t *Buf,
+                                     uint64_t *Copied) const {
+  if (Addr >= Base + getExtent() || Addr < Base)
+    return -1;
+  uint64_t Offset = Addr - Base;
+  if (Size > getExtent() - Offset)
+    Size = getExtent() - Offset;
+  memcpy(Buf, Bytes.data() + Offset, Size);
+  if (Copied)
+    *Copied = Size;
+  return 0;
+}