diff --git a/include/asm-mn10300/Kbuild b/include/asm-mn10300/Kbuild
index c68e1680da01..27b108a86b39 100644
--- a/include/asm-mn10300/Kbuild
+++ b/include/asm-mn10300/Kbuild
@@ -1 +1,2 @@
 include include/asm-generic/Kbuild.asm
+unifdef-y += swab.h
diff --git a/include/asm-mn10300/byteorder.h b/include/asm-mn10300/byteorder.h
index 3c993cc625f8..45b18ded19e6 100644
--- a/include/asm-mn10300/byteorder.h
+++ b/include/asm-mn10300/byteorder.h
@@ -1,46 +1,7 @@
-/* MN10300 Byte-order primitive construction
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
 #ifndef _ASM_BYTEORDER_H
 #define _ASM_BYTEORDER_H
 
-#include <asm/types.h>
-
-#ifdef __GNUC__
-
-static inline __attribute__((const))
-__u32 ___arch__swab32(__u32 x)
-{
-	__u32 ret;
-	asm("swap %1,%0" : "=r" (ret) : "r" (x));
-	return ret;
-}
-
-static inline __attribute__((const))
-__u16 ___arch__swab16(__u16 x)
-{
-	__u16 ret;
-	asm("swaph %1,%0" : "=r" (ret) : "r" (x));
-	return ret;
-}
-
-#define __arch__swab32(x) ___arch__swab32(x)
-#define __arch__swab16(x) ___arch__swab16(x)
-
-#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
-#  define __BYTEORDER_HAS_U64__
-#  define __SWAB_64_THRU_32__
-#endif
-
-#endif /* __GNUC__ */
-
+#include <asm/swab.h>
 #include <linux/byteorder/little_endian.h>
 
 #endif /* _ASM_BYTEORDER_H */
diff --git a/include/asm-mn10300/swab.h b/include/asm-mn10300/swab.h
new file mode 100644
index 000000000000..4504d1b4b477
--- /dev/null
+++ b/include/asm-mn10300/swab.h
@@ -0,0 +1,42 @@
+/* MN10300 Byte-order primitive construction
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_SWAB_H
+#define _ASM_SWAB_H
+
+#include <asm/types.h>
+
+#ifdef __GNUC__
+
+static inline __attribute__((const))
+__u32 __arch_swab32(__u32 x)
+{
+	__u32 ret;
+	asm("swap %1,%0" : "=r" (ret) : "r" (x));
+	return ret;
+}
+#define __arch_swab32 __arch_swab32
+
+static inline __attribute__((const))
+__u16 __arch_swab16(__u16 x)
+{
+	__u16 ret;
+	asm("swaph %1,%0" : "=r" (ret) : "r" (x));
+	return ret;
+}
+#define __arch_swab32 __arch_swab32
+
+#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
+#  define __SWAB_64_THRU_32__
+#endif
+
+#endif /* __GNUC__ */
+
+#endif /* _ASM_SWAB_H */