| #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 */ |