NetBSD/sys/arch/sh3/include/bswap.h

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/* $NetBSD: bswap.h,v 1.1 1999/09/13 10:31:14 itojun Exp $ */
/* Written by Manuel Bouyer. Public domain */
#ifndef _SH3_BSWAP_H_
#define _SH3_BSWAP_H_
#include <sys/cdefs.h>
#ifndef _KERNEL
__BEGIN_DECLS
u_int16_t bswap16 __P((u_int16_t));
u_int32_t bswap32 __P((u_int32_t));
u_int64_t bswap64 __P((u_int64_t));
__END_DECLS
#else /* _KERNEL */
__BEGIN_DECLS
static __inline u_int16_t bswap16 __P((u_int16_t));
static __inline u_int32_t bswap32 __P((u_int32_t));
u_int64_t bswap64 __P((u_int64_t));
__END_DECLS
static __inline u_int16_t
bswap16(x)
u_int16_t x;
{
u_int16_t rval;
__asm __volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x));
return rval;
}
static __inline u_int32_t
bswap32(x)
u_int32_t x;
{
u_int32_t rval;
__asm __volatile ("swap.b %1,%0; swap.w %0,%0; swap.b %0,%0"
: "=r"(rval) : "r"(x));
return rval;
}
#endif /* _KERNEL */
#endif /* _SH3_BSWAP_H_ */