diff --git a/target-sh4/helper.h b/target-sh4/helper.h
new file mode 100644
index 0000000..60addab
--- /dev/null
+++ b/target-sh4/helper.h
@@ -0,0 +1,4 @@
+#ifndef DEF_HELPER
+#define DEF_HELPER(ret, name, params) ret name params;
+#endif
+