#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 */