1/* $NetBSD: atomic_cas.S,v 1.10 2022/04/06 22:47:56 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__RCSID("$NetBSD: atomic_cas.S,v 1.10 2022/04/06 22:47:56 riastradh Exp $") 35 36 .text 37ENTRY(_atomic_cas_32) 38 mr %r10,%r3 391: lwarx %r3,0,%r10 40 cmpw %r3,%r4 41 bnelr- 42 IBM405_ERRATA77_DCBT(0,%r10) 43 stwcx. %r5,0,%r10 44 beqlr+ 45 b 1b 46END(_atomic_cas_32) 47 48ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32) 49ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32) 50STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32) 51 52ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32) 53ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32) 54 55STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32) 56STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32) 57 58#if defined(_LP64) 59ENTRY(_atomic_cas_64) 60 mr %r10,%r3 611: ldarx %r3,0,%r10 62 cmpd %r3,%r4 63 bnelr- 64 stdcx. %r5,0,%r10 65 beqlr+ 66 b 1b 67END(_atomic_cas_64) 68 69ATOMIC_OP_ALIAS(atomic_cas_64,_atomic_cas_64) 70ATOMIC_OP_ALIAS(atomic_cas_64_ni,_atomic_cas_64) 71STRONG_ALIAS(_atomic_cas_64_ni,_atomic_cas_64) 72 73ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_64) 74ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_64) 75 76ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_64) 77ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_64) 78 79STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_64) 80STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_64) 81 82STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_64) 83STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_64) 84#else 85ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_32) 86ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_32) 87 88ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_32) 89ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_32) 90 91STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_32) 92STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_32) 93 94STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_32) 95STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_32) 96#endif 97