arch/m68k/include/asm/swab.h

   1 #ifndef _M68K_SWAB_H
   2 #define _M68K_SWAB_H
   3
   4 #include <linux/types.h>
   5 #include <linux/compiler.h>
   6
   7 #define __SWAB_64_THRU_32__
   8
   9 #if defined (__mcfisaaplus__) || defined (__mcfisac__)
  10 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
  11 {
  12         __asm__("byterev %0" : "=d" (val) : "0" (val));
  13         return val;
  14 }
  15
  16 #define __arch_swab32 __arch_swab32
  17 #elif !defined(__uClinux__)
  18
  19 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
  20 {
  21         __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
  22         return val;
  23 }
  24 #define __arch_swab32 __arch_swab32
  25 #endif
  26
  27 #endif /* _M68K_SWAB_H */