diff --git a/arch/common/common-defs.h b/arch/common/common-defs.h
index e2ebe24..0dbb89c 100644
--- a/arch/common/common-defs.h
+++ b/arch/common/common-defs.h
@@ -18,7 +18,7 @@
 #endif
 
 #define FUNC(__proc)					\
-	.globl 	__proc;					\
+	.global __proc;					\
 	.align  2;					\
 	.type   __proc, @function;			\
 	ENT(__proc)					\
@@ -29,4 +29,8 @@ __proc:							\
 	.end	__proc;					\
 	.size	__proc,.-__proc;
 
+#define ALIAS(__alias, __real)				\
+	.weak	__alias;				\
+	__alias = __real;
+
 #endif