[coldfire] add byte reverse

[coldfire] add byte reverse

[Nathan Sidwell]

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We've been using this patch for quite some time, because I thought
submission was being handled by someone else.

I see the swab_no.h header file already contains these bits, so it's
not needed there.

nathan
-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::         CodeSourcery


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Signed-off-by: Nathan Sidwell <nathan@codesourcery.com>
---
 arch/m68k/include/asm/swab_mm.h |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/m68k/include/asm/swab_mm.h b/arch/m68k/include/asm/swab_mm.h
index 7221e30..a391274 100644
--- a/arch/m68k/include/asm/swab_mm.h
+++ b/arch/m68k/include/asm/swab_mm.h
@@ -6,11 +6,20 @@
 
 #define __SWAB_64_THRU_32__
 
+#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 __arch_swab32
+#elif !defined (__mcoldfire__)
 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
 {
 	__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
 	return val;
 }
 #define __arch_swab32 __arch_swab32
+#endif
 
 #endif /* _M68K_SWAB_H */
-- 
1.5.2.5