diff -r 000000000000 -r 6474c204b198 js/src/jit-test/lib/prolog.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/lib/prolog.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+
+var appendToActual = function(s) {
+    actual += s + ',';
+}
+
+if (!("gczeal" in this)) {
+  gczeal = function() { }
+}
+
+if (!("schedulegc" in this)) {
+  schedulegc = function() { }
+}
+
+if (!("gcslice" in this)) {
+  gcslice = function() { }
+}
+
+if (!("selectforgc" in this)) {
+  selectforgc = function() { }
+}
+
+if (!("verifyprebarriers" in this)) {
+  verifyprebarriers = function() { }
+}
+
+if (!("verifypostbarriers" in this)) {
+  verifypostbarriers = function() { }
+}
+
+if (!("gcPreserveCode" in this)) {
+  gcPreserveCode = function() { }
+}