xref: /linux/arch/arm/include/asm/bitrev.h (revision ca55b2fef3a9373fcfc30f82fd26bc7fccbda732)
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
21