| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_BITREV_H |
| 3 | #define __ASM_BITREV_H |
| 4 | |
| 5 | static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x) |
| 6 | { |
| 7 | __asm__ ("rbit %0, %1" : "=r" (x) : "r" (x)); |
| 8 | return x; |
| 9 | } |
| 10 | |
| 11 | static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x) |
| 12 | { |
| 13 | return __arch_bitrev32((u32)x) >> 16; |
| 14 | } |
| 15 | |
| 16 | static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x) |
| 17 | { |
| 18 | return __arch_bitrev32((u32)x) >> 24; |
| 19 | } |
| 20 | |
| 21 | #endif |