arch/arm/include/asm/bitrev.h

   1 #ifndef __ASM_BITREV_H
   2 #define __ASM_BITREV_H
   3
   4 static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
   5 {
   6         __asm__ ("rbit %0, %1" : "=r" (x) : "r" (x));
   7         return x;
   8 }
   9
  10 static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
  11 {
  12         return __arch_bitrev32((u32)x) >> 16;
  13 }
  14
  15 static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
  16 {
  17         return __arch_bitrev32((u32)x) >> 24;
  18 }
  19
  20 #endif