#ifndef __ASM_X86_BYTEORDER_H__
#define __ASM_X86_BYTEORDER_H__
#include <asm/types.h>
#include <xen/compiler.h>
static inline __attribute_const__ __u32 ___arch__swab32(__u32 x)
{
asm("bswap %0" : "=r" (x) : "0" (x));
return x;
}
static inline __attribute_const__ __u64 ___arch__swab64(__u64 val)
{
union {
struct { __u32 a,b; } s;
__u64 u;
} v;
v.u = val;
asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
: "=r" (v.s.a), "=r" (v.s.b)
: "0" (v.s.a), "1" (v.s.b));
return v.u;
}
/* Do not define swab16. Gcc is smart enough to recognize "C" version and
convert it into rotation or exhange. */
#define __arch__swab64(x) ___arch__swab64(x)
#define __arch__swab32(x) ___arch__swab32(x)
#define __BYTEORDER_HAS_U64__
#include <xen/byteorder/little_endian.h>
#endif /* __ASM_X86_BYTEORDER_H__ */
