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m68knommu: add byteswap assembly opcode for ISA A+ 

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
Sebastian Siewior 2008-05-17 21:51:15 +02:00 committed by Greg Ungerer
parent a6260ef841
commit e872504b31
1 changed files with 15 additions and 1 deletions
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16
include/asm-m68knommu/byteorder.h
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@ -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 */