Release 4.14 arch/sh/include/asm/cmpxchg-cas.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_CMPXCHG_CAS_H

#define __ASM_SH_CMPXCHG_CAS_H


static inline unsigned long

__cmpxchg_u32(volatile u32 *m, unsigned long old, unsigned long new)
{
	__asm__ __volatile__("cas.l %1,%0,@r0"
                : "+r"(new)
                : "r"(old), "z"(m)
                : "t", "memory" );
	return new;
}

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static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val)
{
	unsigned long old;
	do old = *m;
	while (__cmpxchg_u32(m, old, val) != old);
	return old;
}

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#include <asm/cmpxchg-xchg.h>

#endif /* __ASM_SH_CMPXCHG_CAS_H */
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Directory: arch/sh/include/asm

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