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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_X86_SWAB_H
#define _ASM_X86_SWAB_H
#include <linux/types.h>
#include <linux/compiler.h>
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
asm("bswapl %0" : "=r" (val) : "0" (val));
return val;
}
#define __arch_swab32 __arch_swab32
static inline __attribute_const__ __u64 __arch_swab64(__u64 val)
{
#ifdef __i386__
union {
struct {
__u32 a;
__u32 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;
#else /* __i386__ */
asm("bswapq %0" : "=r" (val) : "0" (val));
return val;
#endif
}
#define __arch_swab64 __arch_swab64
#endif /* _ASM_X86_SWAB_H */