1/* $NetBSD: atomic_cas_64.S,v 1.2 2015/03/27 06:42:37 matt Exp $ */ 2/*- 3 * Copyright (c) 2014 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Matt Thomas <matt@3am-software.com> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifdef _LP64 32#include "atomic_op_asm.h" 33 34ENTRY_NP(_atomic_cas_64) 35 mv t0, a0 361: lr.d a0, 0(t0) 37 bne a1, a0, 2f 38 sc.d t1, a2, 0(t0) 39 bnez t1, 1b 402: 41 ret 42END(_atomic_cas_64) 43 44ATOMIC_OP_ALIAS(atomic_cas_64,_atomic_cas_64) 45ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_64) 46STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_64) 47ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_64) 48STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_64) 49ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_64) 50STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_64) 51ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_64) 52STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_64) 53 54CRT_ALIAS(__sync_val_compare_and_swap_8,_atomic_cas_64) 55 56ENTRY_NP(_atomic_bool_cas_64) 57 mv t0, a0 58 li a0, 0 591: lr.d t1, 0(t0) 60 bne a1, t1, 2f 61 sc.d t1, a2, 0(t0) 62 bnez t1, 1b 63 li a0, 1 642: 65 ret 66END(_atomic_bool_cas_64) 67 68ATOMIC_OP_ALIAS(atomic_bool_cas_64,_atomic_bool_cas_64) 69CRT_ALIAS(__bool_val_compare_and_swap_8,_atomic_bool_cas_64) 70#endif /* _LP64 */ 71