18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_SWAB_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_SWAB_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/types.h> 68c2ecf20Sopenharmony_ci#include <linux/compiler.h> 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_cistatic inline __attribute_const__ __u32 __arch_swab32(__u32 val) 98c2ecf20Sopenharmony_ci{ 108c2ecf20Sopenharmony_ci asm("bswapl %0" : "=r" (val) : "0" (val)); 118c2ecf20Sopenharmony_ci return val; 128c2ecf20Sopenharmony_ci} 138c2ecf20Sopenharmony_ci#define __arch_swab32 __arch_swab32 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_cistatic inline __attribute_const__ __u64 __arch_swab64(__u64 val) 168c2ecf20Sopenharmony_ci{ 178c2ecf20Sopenharmony_ci#ifdef __i386__ 188c2ecf20Sopenharmony_ci union { 198c2ecf20Sopenharmony_ci struct { 208c2ecf20Sopenharmony_ci __u32 a; 218c2ecf20Sopenharmony_ci __u32 b; 228c2ecf20Sopenharmony_ci } s; 238c2ecf20Sopenharmony_ci __u64 u; 248c2ecf20Sopenharmony_ci } v; 258c2ecf20Sopenharmony_ci v.u = val; 268c2ecf20Sopenharmony_ci asm("bswapl %0 ; bswapl %1 ; xchgl %0,%1" 278c2ecf20Sopenharmony_ci : "=r" (v.s.a), "=r" (v.s.b) 288c2ecf20Sopenharmony_ci : "0" (v.s.a), "1" (v.s.b)); 298c2ecf20Sopenharmony_ci return v.u; 308c2ecf20Sopenharmony_ci#else /* __i386__ */ 318c2ecf20Sopenharmony_ci asm("bswapq %0" : "=r" (val) : "0" (val)); 328c2ecf20Sopenharmony_ci return val; 338c2ecf20Sopenharmony_ci#endif 348c2ecf20Sopenharmony_ci} 358c2ecf20Sopenharmony_ci#define __arch_swab64 __arch_swab64 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci#endif /* _ASM_X86_SWAB_H */ 38