1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
4 */
5 #ifndef __LOONGARCH_ASM_BITREV_H__
6 #define __LOONGARCH_ASM_BITREV_H__
7
8 #include <linux/swab.h>
9
10 static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
11 {
12 u32 ret;
13
14 asm("bitrev.4b %0, %1" : "=r"(ret) : "r"(__swab32(x)));
15 return ret;
16 }
17
18 static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
19 {
20 u16 ret;
21
22 asm("bitrev.4b %0, %1" : "=r"(ret) : "r"(__swab16(x)));
23 return ret;
24 }
25
26 static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
27 {
28 u8 ret;
29
30 asm("bitrev.4b %0, %1" : "=r"(ret) : "r"(x));
31 return ret;
32 }
33
34 #endif /* __LOONGARCH_ASM_BITREV_H__ */
35
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