1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_SH_CMPXCHG_LLSC_H
3#define __ASM_SH_CMPXCHG_LLSC_H
4
5static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
6{
7	unsigned long retval;
8	unsigned long tmp;
9
10	__asm__ __volatile__ (
11		"1:					\n\t"
12		"movli.l	@%2, %0	! xchg_u32	\n\t"
13		"mov		%0, %1			\n\t"
14		"mov		%3, %0			\n\t"
15		"movco.l	%0, @%2			\n\t"
16		"bf		1b			\n\t"
17		"synco					\n\t"
18		: "=&z"(tmp), "=&r" (retval)
19		: "r" (m), "r" (val)
20		: "t", "memory"
21	);
22
23	return retval;
24}
25
26static inline unsigned long
27__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
28{
29	unsigned long retval;
30	unsigned long tmp;
31
32	__asm__ __volatile__ (
33		"1:						\n\t"
34		"movli.l	@%2, %0	! __cmpxchg_u32		\n\t"
35		"mov		%0, %1				\n\t"
36		"cmp/eq		%1, %3				\n\t"
37		"bf		2f				\n\t"
38		"mov		%4, %0				\n\t"
39		"2:						\n\t"
40		"movco.l	%0, @%2				\n\t"
41		"bf		1b				\n\t"
42		"synco						\n\t"
43		: "=&z" (tmp), "=&r" (retval)
44		: "r" (m), "r" (old), "r" (new)
45		: "t", "memory"
46	);
47
48	return retval;
49}
50
51#include <asm/cmpxchg-xchg.h>
52
53#endif /* __ASM_SH_CMPXCHG_LLSC_H */
54