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diff --git a/Source/JavaScriptCore/dfg/DFGDisassembler.h b/Source/JavaScriptCore/dfg/DFGDisassembler.h
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+++ b/Source/JavaScriptCore/dfg/DFGDisassembler.h
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+/*
+ * Copyright (C) 2012, 2013 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. 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 DFGDisassembler_h
+#define DFGDisassembler_h
+
+#if ENABLE(DFG_JIT)
+
+#include "CodeOrigin.h"
+#include "DFGCommon.h"
+#include "DumpContext.h"
+#include "MacroAssembler.h"
+#include "ProfilerCompilation.h"
+#include <wtf/HashMap.h>
+#include <wtf/StringPrintStream.h>
+#include <wtf/Vector.h>
+
+namespace JSC {
+
+class LinkBuffer;
+
+namespace DFG {
+
+class Graph;
+
+class Disassembler {
+    WTF_MAKE_FAST_ALLOCATED;
+public:
+    Disassembler(Graph&);
+    
+    void setStartOfCode(MacroAssembler::Label label) { m_startOfCode = label; }
+    void setForBlockIndex(BlockIndex blockIndex, MacroAssembler::Label label)
+    {
+        m_labelForBlockIndex[blockIndex] = label;
+    }
+    void setForNode(Node* node, MacroAssembler::Label label)
+    {
+        ASSERT(label.isSet());
+        m_labelForNode.add(node, label);
+    }
+    void setEndOfMainPath(MacroAssembler::Label label)
+    {
+        m_endOfMainPath = label;
+    }
+    void setEndOfCode(MacroAssembler::Label label)
+    {
+        m_endOfCode = label;
+    }
+    
+    void dump(PrintStream&, LinkBuffer&);
+    void dump(LinkBuffer&);
+    void reportToProfiler(Profiler::Compilation*, LinkBuffer&);
+    
+private:
+    void dumpHeader(PrintStream&, LinkBuffer&);
+    
+    struct DumpedOp {
+        DumpedOp(CodeOrigin codeOrigin, CString text)
+            : codeOrigin(codeOrigin)
+            , text(text)
+        {
+        }
+        
+        CodeOrigin codeOrigin;
+        CString text;
+    };
+    void append(Vector<DumpedOp>&, StringPrintStream&, CodeOrigin&);
+    Vector<DumpedOp> createDumpList(LinkBuffer&);
+    
+    void dumpDisassembly(PrintStream&, const char* prefix, LinkBuffer&, MacroAssembler::Label& previousLabel, MacroAssembler::Label currentLabel, Node* context);
+    
+    Graph& m_graph;
+    DumpContext m_dumpContext;
+    MacroAssembler::Label m_startOfCode;
+    Vector<MacroAssembler::Label> m_labelForBlockIndex;
+    HashMap<Node*, MacroAssembler::Label> m_labelForNode;
+    MacroAssembler::Label m_endOfMainPath;
+    MacroAssembler::Label m_endOfCode;
+};
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+
+#endif // DFGDisassembler_h