49 lines
852 B
C
49 lines
852 B
C
/* $NetBSD: bswap.h,v 1.5 2005/12/24 20:07:32 perry 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_ */
|