/*      $NetBSD: atomic_op_asm.h,v 1.10 2021/07/28 08:01:10 simonb Exp $        */

/*-
 * Copyright (c) 2007 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the NetBSD
 *      Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _ATOMIC_OP_ASM_H_
#define _ATOMIC_OP_ASM_H_

#include <machine/asm.h>

#if defined(_KERNEL) || defined(_STANDALONE)

#define ATOMIC_OP_ALIAS(a,s)    STRONG_ALIAS(a,s)

#else /* _KERNEL */

#define ATOMIC_OP_ALIAS(a,s)    WEAK_ALIAS(a,s)
#ifdef _LIBC
#define CRT_ALIAS(a,s)          STRONG_ALIAS(a,s)
#endif

#endif /* _KERNEL */

#ifdef __ARMEB__
#define HI      r0
#define LO      r1
#define NHI     r2
#define NLO     r3
#define THI     r4
#define TLO     r5
#else
#define LO      r0
#define HI      r1
#define NLO     r2
#define NHI     r3
#define TLO     r4
#define THI     r5
#endif

#ifndef CRT_ALIAS
#define CRT_ALIAS(a,s)
#endif

#ifdef _ARM_ARCH_7
#define DMB     dmb     ish
#define DMBST   dmb     ishst
#else
#define DMB     mcr     p15, 0, r0, c7, c10, 5  /* Data Memory Barrier */
#define DMBST   DMB
#endif

#endif /* _ATOMIC_OP_ASM_H_ */