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/* $NetBSD: bswap.h,v 1.4 2002/04/28 17:10:33 uch 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(u_int16_t);
u_int32_t bswap32(u_int32_t);
u_int64_t bswap64(u_int64_t);
__END_DECLS
#else /* _KERNEL */
__BEGIN_DECLS
static __inline u_int16_t bswap16(u_int16_t);
static __inline u_int32_t bswap32(u_int32_t);
u_int64_t bswap64(u_int64_t);
__END_DECLS
static __inline u_int16_t
bswap16(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(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_ */
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