| /* 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 */ |
