diff --git a/src/memory.h b/src/memory.h
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+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_MEMORY_H_
+#define V8_MEMORY_H_
+
+namespace v8 {
+namespace internal {
+
+// Memory provides an interface to 'raw' memory. It encapsulates the casts
+// that typically are needed when incompatible pointer types are used.
+
+class Memory {
+ public:
+  static uint16_t& uint16_at(Address addr)  {
+    return *reinterpret_cast<uint16_t*>(addr);
+  }
+
+  static uint32_t& uint32_at(Address addr)  {
+    return *reinterpret_cast<uint32_t*>(addr);
+  }
+
+  static int32_t& int32_at(Address addr)  {
+    return *reinterpret_cast<int32_t*>(addr);
+  }
+
+  static uint64_t& uint64_at(Address addr)  {
+    return *reinterpret_cast<uint64_t*>(addr);
+  }
+
+  static int& int_at(Address addr)  {
+    return *reinterpret_cast<int*>(addr);
+  }
+
+  static Address& Address_at(Address addr)  {
+    return *reinterpret_cast<Address*>(addr);
+  }
+
+  static Object*& Object_at(Address addr)  {
+    return *reinterpret_cast<Object**>(addr);
+  }
+};
+
+} }  // namespace v8::internal
+
+#endif  // V8_MEMORY_H_