linux/arch/m68k/include/asm/swab.h
Maxim Kuvyrkov 145452649d m68k: Fix asm/swab.h for ColdFire
Make asm/swab.h compatible with ColdFire ISA_B CPUs.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-02-27 18:27:13 +01:00

28 lines
602 B
C

#ifndef _M68K_SWAB_H
#define _M68K_SWAB_H
#include <linux/types.h>
#include <linux/compiler.h>
#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 */