1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _ASM_X86_SWAB_H
 3#define _ASM_X86_SWAB_H
 4
 5#include <linux/types.h>
 6
 7
 8static __inline__  __u32 __arch_swab32(__u32 val)
 9{
10	__asm__("bswapl %0" : "=r" (val) : "0" (val));
11	return val;
12}
13#define __arch_swab32 __arch_swab32
14
15static __inline__  __u64 __arch_swab64(__u64 val)
16{
17#ifdef __i386__
18	union {
19		struct {
20			__u32 a;
21			__u32 b;
22		} s;
23		__u64 u;
24	} v;
25	v.u = val;
26	__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
27	    : "=r" (v.s.a), "=r" (v.s.b)
28	    : "0" (v.s.a), "1" (v.s.b));
29	return v.u;
30#else /* __i386__ */
31	__asm__("bswapq %0" : "=r" (val) : "0" (val));
32	return val;
33#endif
34}
35#define __arch_swab64 __arch_swab64
36
37#endif /* _ASM_X86_SWAB_H */