1#ifndef _ASM_X86_SWAB_H
2#define _ASM_X86_SWAB_H
3
4#include <linux/types.h>
5
6
7static __inline__ __u32 __arch_swab32(__u32 val)
8{
9 __asm__("bswapl %0" : "=r" (val) : "0" (val));
10 return val;
11}
12#define __arch_swab32 __arch_swab32
13
14static __inline__ __u64 __arch_swab64(__u64 val)
15{
16#ifdef __i386__
17 union {
18 struct {
19 __u32 a;
20 __u32 b;
21 } s;
22 __u64 u;
23 } v;
24 v.u = val;
25 __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
26 : "=r" (v.s.a), "=r" (v.s.b)
27 : "0" (v.s.a), "1" (v.s.b));
28 return v.u;
29#else /* __i386__ */
30 __asm__("bswapq %0" : "=r" (val) : "0" (val));
31 return val;
32#endif
33}
34#define __arch_swab64 __arch_swab64
35
36#endif /* _ASM_X86_SWAB_H */
37