1/* $NetBSD: atomic_inc_32.S,v 1.1 2014/09/03 19:34:25 matt Exp $ */ 2/*- 3 * Copyright (c) 2008 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#include "atomic_op_asm.h" 32 33ENTRY_NP(_atomic_inc_32) 341: l.lwa r11, 0(r3) /* load old value */ 35 l.addi r5, r11, 1 /* calculate new value */ 36 l.swa 0(r3), r5 /* try to store */ 37 l.bnf 1b /* succeed? no, try again */ 38 l.nop /* -- delay slot -- */ 39 l.jr lr /* return old value */ 40 l.nop 41END(_atomic_inc_32) 42ATOMIC_OP_ALIAS(atomic_inc_32,_atomic_inc_32) 43ATOMIC_OP_ALIAS(atomic_inc_uint,_atomic_inc_32) 44ATOMIC_OP_ALIAS(atomic_inc_ulong,_atomic_inc_32) 45ATOMIC_OP_ALIAS(atomic_inc_ptr,_atomic_inc_32) 46STRONG_ALIAS(_atomic_inc_uint,_atomic_inc_32) 47STRONG_ALIAS(_atomic_inc_ulong,_atomic_inc_32) 48STRONG_ALIAS(_atomic_inc_ptr,_atomic_inc_32) 49 50ENTRY_NP(_atomic_inc_32_nv) 511: l.lwa r5, 0(r3) /* load old value */ 52 l.addi r11, r5, 1 /* calculate new value */ 53 l.swa 0(r3), r11 /* try to store */ 54 l.bnf 1b /* succeed? no, try again */ 55 l.nop /* -- delay slot -- */ 56 l.jr lr /* return old value */ 57 l.nop 58END(_atomic_inc_32_nv) 59ATOMIC_OP_ALIAS(atomic_inc_32_nv,_atomic_inc_32_nv) 60ATOMIC_OP_ALIAS(atomic_inc_uint_nv,_atomic_inc_32_nv) 61ATOMIC_OP_ALIAS(atomic_inc_ulong_nv,_atomic_inc_32_nv) 62ATOMIC_OP_ALIAS(atomic_inc_ptr_nv,_atomic_inc_32_nv) 63STRONG_ALIAS(_atomic_inc_uint_nv,_atomic_inc_32_nv) 64STRONG_ALIAS(_atomic_inc_ulong_nv,_atomic_inc_32_nv) 65STRONG_ALIAS(_atomic_inc_ptr_nv,_atomic_inc_32_nv) 66