diff -r 000000000000 -r 6474c204b198 js/src/builtin/Eval.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/builtin/Eval.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef builtin_Eval_h
+#define builtin_Eval_h
+
+#include "jsbytecode.h"
+#include "NamespaceImports.h"
+
+namespace js {
+
+// The C++ native for 'eval' (ES5 15.1.2.1). The function is named "indirect
+// eval" because "direct eval" calls (as defined by the spec) will emit
+// JSOP_EVAL which in turn calls DirectEval. Thus, even though IndirectEval is
+// the callee function object for *all* calls to eval, it is by construction
+// only ever called in the case indirect eval.
+extern bool
+IndirectEval(JSContext *cx, unsigned argc, Value *vp);
+
+// Performs a direct eval for the given arguments, which must correspond to the
+// currently-executing stack frame, which must be a script frame. On completion
+// the result is returned in args.rval.
+extern bool
+DirectEval(JSContext *cx, const CallArgs &args);
+
+// Performs a direct eval called from Ion code.
+extern bool
+DirectEvalStringFromIon(JSContext *cx,
+                        HandleObject scopeObj, HandleScript callerScript,
+                        HandleValue thisValue, HandleString str,
+                        jsbytecode * pc, MutableHandleValue vp);
+extern bool
+DirectEvalValueFromIon(JSContext *cx,
+                       HandleObject scopeObj, HandleScript callerScript,
+                       HandleValue thisValue, HandleValue evalArg,
+                       jsbytecode * pc, MutableHandleValue vp);
+
+// True iff fun is a built-in eval function.
+extern bool
+IsAnyBuiltinEval(JSFunction *fun);
+
+}  // namespace js
+#endif /* builtin_Eval_h */