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diff --git a/Source/JavaScriptCore/wtf/MallocZoneSupport.h b/Source/JavaScriptCore/wtf/MallocZoneSupport.h
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+++ b/Source/JavaScriptCore/wtf/MallocZoneSupport.h
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+/*
+ * Copyright (C) 2007 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 MallocZoneSupport_h
+#define MallocZoneSupport_h
+
+#include <malloc/malloc.h>
+
+namespace WTF {
+
+class RemoteMemoryReader {
+    task_t m_task;
+    memory_reader_t* m_reader;
+
+public:
+    RemoteMemoryReader(task_t task, memory_reader_t* reader)
+        : m_task(task)
+        , m_reader(reader)
+    { }
+
+    void* operator()(vm_address_t address, size_t size) const
+    {
+        void* output;
+        kern_return_t err = (*m_reader)(m_task, address, size, static_cast<void**>(&output));
+        ASSERT(!err);
+        if (err)
+            output = 0;
+        return output;
+    }
+
+    template <typename T>
+    T* operator()(T* address, size_t size=sizeof(T)) const
+    {
+        return static_cast<T*>((*this)(reinterpret_cast<vm_address_t>(address), size));
+    }
+};
+
+} // namespace WTF
+
+#endif // MallocZoneSupport_h