m68knommu: add byteswap assembly opcode for ISA A+

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/asm-m68knommu/byteorder.h b/include/asm-m68knommu/byteorder.h
index 8fcde907b0f9..20bb4426b610 100644
--- a/include/asm-m68knommu/byteorder.h
+++ b/include/asm-m68knommu/byteorder.h
@@ -1,13 +1,27 @@
 #ifndef _M68KNOMMU_BYTEORDER_H
 #define _M68KNOMMU_BYTEORDER_H
 
-#include <asm/types.h>
+#include <linux/types.h>
 
 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
 #  define __BYTEORDER_HAS_U64__
 #  define __SWAB_64_THRU_32__
 #endif
 
+#if defined (__mcfisaaplus__) || defined (__mcfisac__)
+static inline __attribute_const__ __u32 ___arch__swab32(__u32 val)
+{
+        asm(
+                        "byterev %0"
+                        : "=d" (val)
+                        : "0" (val)
+           );
+        return val;
+}
+
+#define __arch__swab32(x) ___arch__swab32(x)
+#endif
+
 #include <linux/byteorder/big_endian.h>
 
 #endif /* _M68KNOMMU_BYTEORDER_H */