1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_SH_CMPXCHG_CAS_H
 3#define __ASM_SH_CMPXCHG_CAS_H
 4
 5static inline unsigned long
 6__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
 7{
 8	__asm__ __volatile__("cas.l %1,%0,@r0"
 9		: "+r"(new)
10		: "r"(old), "z"(m)
11		: "t", "memory" );
12	return new;
13}
14
15static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
16{
17	unsigned long old;
18	do old = *m;
19	while (__cmpxchg_u32(m, old, val) != old);
20	return old;
21}
22
23#include <asm/cmpxchg-xchg.h>
24
25#endif /* __ASM_SH_CMPXCHG_CAS_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_SH_CMPXCHG_CAS_H
 3#define __ASM_SH_CMPXCHG_CAS_H
 4
 5static inline unsigned long
 6__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
 7{
 8	__asm__ __volatile__("cas.l %1,%0,@r0"
 9		: "+r"(new)
10		: "r"(old), "z"(m)
11		: "t", "memory" );
12	return new;
13}
14
15static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
16{
17	unsigned long old;
18	do old = *m;
19	while (__cmpxchg_u32(m, old, val) != old);
20	return old;
21}
22
23#include <asm/cmpxchg-xchg.h>
24
25#endif /* __ASM_SH_CMPXCHG_CAS_H */