1/* $NetBSD: atomic_op_asm.h,v 1.10 2021/07/28 08:01:10 simonb Exp $ */ 2 3/*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#ifndef _ATOMIC_OP_ASM_H_ 40#define _ATOMIC_OP_ASM_H_ 41 42#include <machine/asm.h> 43 44#if defined(_KERNEL) || defined(_STANDALONE) 45 46#define ATOMIC_OP_ALIAS(a,s) STRONG_ALIAS(a,s) 47 48#else /* _KERNEL */ 49 50#define ATOMIC_OP_ALIAS(a,s) WEAK_ALIAS(a,s) 51#ifdef _LIBC 52#define CRT_ALIAS(a,s) STRONG_ALIAS(a,s) 53#endif 54 55#endif /* _KERNEL */ 56 57#ifdef __ARMEB__ 58#define HI r0 59#define LO r1 60#define NHI r2 61#define NLO r3 62#define THI r4 63#define TLO r5 64#else 65#define LO r0 66#define HI r1 67#define NLO r2 68#define NHI r3 69#define TLO r4 70#define THI r5 71#endif 72 73#ifndef CRT_ALIAS 74#define CRT_ALIAS(a,s) 75#endif 76 77#ifdef _ARM_ARCH_7 78#define DMB dmb ish 79#define DMBST dmb ishst 80#else 81#define DMB mcr p15, 0, r0, c7, c10, 5 /* Data Memory Barrier */ 82#define DMBST DMB 83#endif 84 85#endif /* _ATOMIC_OP_ASM_H_ */ 86