/* 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 */
|
