text: #ifndef _ASM_X86_SWAB_H
  #define _ASM_X86_SWAB_H
  
  #include <linux/types.h>
  
  
  static __inline__  __u32 __arch_swab32(__u32 val)
  {
  	__asm__("bswapl %0" : "=r" (val) : "0" (val));
  	return val;
  }
  #define __arch_swab32 __arch_swab32
  
  static __inline__  __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 */
  