linux/arch/m68k/include/asm/swab.h
Greg Ungerer 9863a0babc m68k: merge the non-MMU and MMU versions of swab.h
It is trivial to merge the non-MMU and MMU versions of swab.h.
Without a single file "make headers_install" is broken for m68k
(since each of the sub-varients of swab.h are not installed).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2009-03-16 17:54:49 +10:00

28 lines
598 B
C

#ifndef _M68K_SWAB_H
#define _M68K_SWAB_H
#include <asm/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(__uClinux__)
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 */