1/* $NetBSD: atomic_add_32.S,v 1.1 2014/09/03 19:34:25 matt Exp $ */ 2 3/*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 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 34ENTRY_NP(_atomic_sub_32) 35 l.sub r4, r0, r4 /* negate */ 36 /* FALLTHROUGH */ 37ENTRY_NP(_atomic_add_32) 381: l.lwa r11, 0(r3) /* load old value */ 39 l.add r5, r11, r4 /* calculate new value */ 40 l.swa 0(r3), r5 /* try to store */ 41 l.bnf 1b /* succeed? no, try again */ 42 l.nop /* -- delay slot -- */ 43 l.jr lr /* return old value */ 44 l.nop 45END(_atomic_add_32) 46END(_atomic_sub_32) 47 48ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32) 49ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32) 50ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_32) 51ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_32) 52CRT_ALIAS(__sync_fetch_and_add_4,_atomic_add_32) 53CRT_ALIAS(__atomic_fetch_add_4,_atomic_add_32) 54STRONG_ALIAS(_atomic_add_int,_atomic_add_32) 55STRONG_ALIAS(_atomic_add_long,_atomic_add_32) 56STRONG_ALIAS(_atomic_add_ptr,_atomic_add_32) 57 58ATOMIC_OP_ALIAS(atomic_sub_32,_atomic_sub_32) 59ATOMIC_OP_ALIAS(atomic_sub_int,_atomic_sub_32) 60ATOMIC_OP_ALIAS(atomic_sub_long,_atomic_sub_32) 61ATOMIC_OP_ALIAS(atomic_sub_ptr,_atomic_sub_32) 62CRT_ALIAS(__sync_fetch_and_sub_4,_atomic_sub_32) 63CRT_ALIAS(__atomic_fetch_sub_4,_atomic_sub_32) 64STRONG_ALIAS(_atomic_sub_int,_atomic_sub_32) 65STRONG_ALIAS(_atomic_sub_long,_atomic_sub_32) 66STRONG_ALIAS(_atomic_sub_ptr,_atomic_sub_32) 67 68ENTRY_NP(_atomic_sub_32_nv) 69 l.sub r4, r0, r4 /* negate */ 70 /* FALLTHROUGH */ 71ENTRY_NP(_atomic_add_32_nv) 721: l.lwa r5, 0(r3) /* load old value */ 73 l.add r11, r5, r4 /* calculate new value */ 74 l.swa 0(r3), r11 /* try to store */ 75 l.bnf 1b /* succeed? no, try again */ 76 l.nop /* -- delay slot -- */ 77 l.jr lr /* return old value */ 78 l.nop 79END(_atomic_add_32_nv) 80END(_atomic_sub_32_nv) 81ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv) 82ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv) 83ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_32_nv) 84ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_32_nv) 85CRT_ALIAS(__sync_add_and_fetch_4,_atomic_add_32_nv) 86STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv) 87STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_32_nv) 88STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_32_nv) 89 90ATOMIC_OP_ALIAS(atomic_sub_32_nv,_atomic_sub_32_nv) 91ATOMIC_OP_ALIAS(atomic_sub_int_nv,_atomic_sub_32_nv) 92ATOMIC_OP_ALIAS(atomic_sub_long_nv,_atomic_sub_32_nv) 93ATOMIC_OP_ALIAS(atomic_sub_ptr_nv,_atomic_sub_32_nv) 94CRT_ALIAS(__sync_sub_and_fetch_4,_atomic_sub_32_nv) 95STRONG_ALIAS(_atomic_sub_int_nv,_atomic_sub_32_nv) 96STRONG_ALIAS(_atomic_sub_long_nv,_atomic_sub_32_nv) 97STRONG_ALIAS(_atomic_sub_ptr_nv,_atomic_sub_32_nv) 98