blob: a5a0c366013773f980919591c252f0fab5d2ca74 [file] [log] [blame]
Yalin Wang8e7a4ce2014-11-03 03:02:23 +01001#ifndef __ASM_BITREV_H
2#define __ASM_BITREV_H
3static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
4{
5 __asm__ ("rbit %w0, %w1" : "=r" (x) : "r" (x));
6 return x;
7}
8
9static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
10{
11 return __arch_bitrev32((u32)x) >> 16;
12}
13
14static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
15{
16 return __arch_bitrev32((u32)x) >> 24;
17}
18
19#endif