root/headers/private/system/arch/arm64/arch_cpu_defs.h 
/*
 * Copyright 2019 Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _SYSTEM_ARCH_ARM64_DEFS_H
#define _SYSTEM_ARCH_ARM64_DEFS_H


#define SPINLOCK_PAUSE()        __asm__ __volatile__("yield")


#endif  /* _SYSTEM_ARCH_ARM64_DEFS_H */