1/* $NetBSD: atomic_cas.S,v 1.8 2022/04/06 22:47:57 riastradh Exp $ */ 2 3/*- 4 * Copyright (c) 2007, 2008 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "atomic_op_asm.h" 33 34 .text 35 36ENTRY(_atomic_cas_32) 37 cas [%o0], %o1, %o2 38 retl 39 mov %o2, %o0 40 41ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32) 42ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32) 43STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32) 44 45ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32) 46STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32) 47ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32) 48STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32) 49 50ENTRY(_atomic_cas_64) 51#ifndef __arch64__ 52 COMBINE(%o1, %o2, %o1) 53 COMBINE(%o3, %o4, %o2) 54#endif 55 casx [%o0], %o1, %o2 56#ifdef __arch64__ 57 retl 58 mov %o2, %o0 59#else 60 SPLIT_RETL(%o2, %o0, %o1) 61#endif 62 63ATOMIC_OP_ALIAS(atomic_cas_64,_atomic_cas_64) 64ATOMIC_OP_ALIAS_SIZE(atomic_cas_ulong,_atomic_cas) 65STRONG_ALIAS_SIZE(_atomic_cas_ulong,_atomic_cas) 66ATOMIC_OP_ALIAS_SIZE(atomic_cas_ptr,_atomic_cas) 67STRONG_ALIAS_SIZE(_atomic_cas_ptr,_atomic_cas) 68 69ATOMIC_OP_ALIAS(atomic_cas_64_ni,_atomic_cas_64) 70STRONG_ALIAS_SIZE(_atomic_cas_64_ni,_atomic_cas) 71ATOMIC_OP_ALIAS_SIZE(atomic_cas_ulong_ni,_atomic_cas) 72STRONG_ALIAS_SIZE(_atomic_cas_ulong_ni,_atomic_cas) 73ATOMIC_OP_ALIAS_SIZE(atomic_cas_ptr_ni,_atomic_cas) 74STRONG_ALIAS_SIZE(_atomic_cas_ptr_ni,_atomic_cas) 75 76#if !defined(__arch64__) && defined(CRT_ALIAS) 77CRT_ALIAS(__sync_val_compare_and_swap_8,_atomic_cas_64) 78#endif 79