162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 262306a36Sopenharmony_ci#ifndef _ASM_X86_SWAB_H 362306a36Sopenharmony_ci#define _ASM_X86_SWAB_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/types.h> 662306a36Sopenharmony_ci#include <linux/compiler.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_cistatic inline __attribute_const__ __u32 __arch_swab32(__u32 val) 962306a36Sopenharmony_ci{ 1062306a36Sopenharmony_ci asm("bswapl %0" : "=r" (val) : "0" (val)); 1162306a36Sopenharmony_ci return val; 1262306a36Sopenharmony_ci} 1362306a36Sopenharmony_ci#define __arch_swab32 __arch_swab32 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistatic inline __attribute_const__ __u64 __arch_swab64(__u64 val) 1662306a36Sopenharmony_ci{ 1762306a36Sopenharmony_ci#ifdef __i386__ 1862306a36Sopenharmony_ci union { 1962306a36Sopenharmony_ci struct { 2062306a36Sopenharmony_ci __u32 a; 2162306a36Sopenharmony_ci __u32 b; 2262306a36Sopenharmony_ci } s; 2362306a36Sopenharmony_ci __u64 u; 2462306a36Sopenharmony_ci } v; 2562306a36Sopenharmony_ci v.u = val; 2662306a36Sopenharmony_ci asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1" 2762306a36Sopenharmony_ci : "=r" (v.s.a), "=r" (v.s.b) 2862306a36Sopenharmony_ci : "0" (v.s.a), "1" (v.s.b)); 2962306a36Sopenharmony_ci return v.u; 3062306a36Sopenharmony_ci#else /* __i386__ */ 3162306a36Sopenharmony_ci asm("bswapq %0" : "=r" (val) : "0" (val)); 3262306a36Sopenharmony_ci return val; 3362306a36Sopenharmony_ci#endif 3462306a36Sopenharmony_ci} 3562306a36Sopenharmony_ci#define __arch_swab64 __arch_swab64 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci#endif /* _ASM_X86_SWAB_H */ 38