xref: /OK3568_Linux_fs/kernel/arch/mips/include/asm/bitrev.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __MIPS_ASM_BITREV_H__
3*4882a593Smuzhiyun #define __MIPS_ASM_BITREV_H__
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #include <linux/swab.h>
6*4882a593Smuzhiyun 
__arch_bitrev32(u32 x)7*4882a593Smuzhiyun static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
8*4882a593Smuzhiyun {
9*4882a593Smuzhiyun 	u32 ret;
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun 	asm("bitswap	%0, %1" : "=r"(ret) : "r"(__swab32(x)));
12*4882a593Smuzhiyun 	return ret;
13*4882a593Smuzhiyun }
14*4882a593Smuzhiyun 
__arch_bitrev16(u16 x)15*4882a593Smuzhiyun static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun 	u16 ret;
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun 	asm("bitswap	%0, %1" : "=r"(ret) : "r"(__swab16(x)));
20*4882a593Smuzhiyun 	return ret;
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
__arch_bitrev8(u8 x)23*4882a593Smuzhiyun static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun 	u8 ret;
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun 	asm("bitswap	%0, %1" : "=r"(ret) : "r"(x));
28*4882a593Smuzhiyun 	return ret;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun 
31*4882a593Smuzhiyun #endif /* __MIPS_ASM_BITREV_H__ */
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