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diff --git a/Source/JavaScriptCore/ftl/FTLSaveRestore.h b/Source/JavaScriptCore/ftl/FTLSaveRestore.h
new file mode 100644
index 000000000..c624641c7
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+++ b/Source/JavaScriptCore/ftl/FTLSaveRestore.h
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+/*
+ * Copyright (C) 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. 
+ */
+
+#pragma once
+
+#if ENABLE(FTL_JIT)
+
+#include "FPRInfo.h"
+#include "GPRInfo.h"
+#include "Reg.h"
+
+namespace JSC {
+
+class MacroAssembler;
+
+namespace FTL {
+
+size_t requiredScratchMemorySizeInBytes();
+
+size_t offsetOfReg(Reg);
+size_t offsetOfGPR(GPRReg);
+size_t offsetOfFPR(FPRReg);
+
+// Assumes that top-of-stack can be used as a pointer-sized scratchpad. Saves all of
+// the registers into the scratch buffer such that RegisterID * sizeof(int64_t) is the
+// offset of every register.
+void saveAllRegisters(MacroAssembler& jit, char* scratchMemory);
+
+void restoreAllRegisters(MacroAssembler& jit, char* scratchMemory);
+
+} } // namespace JSC::FTL
+
+#endif // ENABLE(FTL_JIT)