1*2d9adf0dSmatt/* $NetBSD: atomic_sub_32.S,v 1.2 2015/03/27 06:42:37 matt Exp $ */ 26cf6fe02Smatt 36cf6fe02Smatt/*- 46cf6fe02Smatt * Copyright (c) 2014 The NetBSD Foundation, Inc. 56cf6fe02Smatt * All rights reserved. 66cf6fe02Smatt * 76cf6fe02Smatt * This code is derived from software contributed to The NetBSD Foundation 86cf6fe02Smatt * by Matt Thomas of 3am Software Foundry. 96cf6fe02Smatt * 106cf6fe02Smatt * Redistribution and use in source and binary forms, with or without 116cf6fe02Smatt * modification, are permitted provided that the following conditions 126cf6fe02Smatt * are met: 136cf6fe02Smatt * 1. Redistributions of source code must retain the above copyright 146cf6fe02Smatt * notice, this list of conditions and the following disclaimer. 156cf6fe02Smatt * 2. Redistributions in binary form must reproduce the above copyright 166cf6fe02Smatt * notice, this list of conditions and the following disclaimer in the 176cf6fe02Smatt * documentation and/or other materials provided with the distribution. 186cf6fe02Smatt * 196cf6fe02Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 206cf6fe02Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 216cf6fe02Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 226cf6fe02Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 236cf6fe02Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 246cf6fe02Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 256cf6fe02Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 266cf6fe02Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 276cf6fe02Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 286cf6fe02Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 296cf6fe02Smatt * POSSIBILITY OF SUCH DAMAGE. 306cf6fe02Smatt */ 316cf6fe02Smatt 326cf6fe02Smatt#include "atomic_op_asm.h" 336cf6fe02Smatt 346cf6fe02SmattENTRY_NP(_atomic_dec_32) 356cf6fe02Smatt li a1, 1 366cf6fe02SmattENTRY_NP(_atomic_sub_32) 37*2d9adf0dSmatt INT_SUB t0, zero, a1 38*2d9adf0dSmatt amoadd.w.aq a0, t0, 0(a0) 396cf6fe02Smatt ret 406cf6fe02SmattEND(_atomic_sub_32) 416cf6fe02SmattEND(_atomic_dec_32) 426cf6fe02Smatt 436cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_32,_atomic_sub_32) 446cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_int,_atomic_sub_32) 456cf6fe02SmattSTRONG_ALIAS(_atomic_sub_int,_atomic_sub_32) 466cf6fe02Smatt#ifndef _LP64 476cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_long,_atomic_sub_32) 486cf6fe02SmattSTRONG_ALIAS(_atomic_sub_long,_atomic_sub_32) 496cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_ptr,_atomic_sub_32) 506cf6fe02SmattSTRONG_ALIAS(_atomic_sub_ptr,_atomic_sub_32) 516cf6fe02Smatt#endif 526cf6fe02SmattCRT_ALIAS(__sync_fetch_and_sub_4,_atomic_sub_32) 536cf6fe02SmattCRT_ALIAS(__atomic_fetch_sub_4,_atomic_sub_32) 546cf6fe02Smatt 556cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_32,_atomic_dec_32) 566cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_uint,_atomic_dec_32) 576cf6fe02SmattSTRONG_ALIAS(_atomic_dec_uint,_atomic_dec_32) 586cf6fe02Smatt#ifndef _LP64 596cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_ulong,_atomic_dec_32) 606cf6fe02SmattSTRONG_ALIAS(_atomic_dec_ulong,_atomic_dec_32) 616cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_ptr,_atomic_dec_32) 626cf6fe02SmattSTRONG_ALIAS(_atomic_dec_ptr,_atomic_dec_32) 636cf6fe02Smatt#endif 646cf6fe02Smatt 656cf6fe02SmattENTRY_NP(_atomic_dec_32_nv) 666cf6fe02Smatt li a1, 1 676cf6fe02SmattENTRY_NP(_atomic_sub_32_nv) 68*2d9adf0dSmatt INT_SUB t1, zero, a1 69*2d9adf0dSmatt amoadd.w.aq t0, t1, 0(a0) /* update memory and get old value */ 70*2d9adf0dSmatt INT_ADD a0, t0, t1 /* turn into new value */ 716cf6fe02Smatt ret 726cf6fe02SmattEND(_atomic_sub_32_nv) 736cf6fe02SmattEND(_atomic_dec_32_nv) 746cf6fe02Smatt 756cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_32_nv,_atomic_sub_32_nv) 766cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_int_nv,_atomic_sub_32_nv) 776cf6fe02SmattSTRONG_ALIAS(_atomic_sub_int_nv,_atomic_sub_32_nv) 786cf6fe02Smatt#ifndef _LP64 796cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_long_nv,_atomic_sub_32_nv) 806cf6fe02SmattSTRONG_ALIAS(_atomic_sub_long_nv,_atomic_sub_32_nv) 816cf6fe02SmattATOMIC_OP_ALIAS(atomic_sub_ptr_nv,_atomic_sub_32_nv) 826cf6fe02SmattSTRONG_ALIAS(_atomic_sub_ptr_nv,_atomic_sub_32_nv) 836cf6fe02Smatt#endif 846cf6fe02SmattCRT_ALIAS(__sync_sub_and_fetch_4,_atomic_sub_32_nv) 856cf6fe02SmattCRT_ALIAS(__atomic_sub_fetch_4,_atomic_sub_32_nv) 866cf6fe02Smatt 876cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_32_nv,_atomic_dec_32_nv) 886cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_uint_nv,_atomic_dec_32_nv) 896cf6fe02SmattSTRONG_ALIAS(_atomic_dec_uint_nv,_atomic_dec_32_nv) 906cf6fe02Smatt#ifndef _LP64 916cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_ulong_nv,_atomic_dec_32_nv) 926cf6fe02SmattSTRONG_ALIAS(_atomic_dec_ulong_nv,_atomic_dec_32_nv) 936cf6fe02SmattATOMIC_OP_ALIAS(atomic_dec_ptr_nv,_atomic_dec_32_nv) 946cf6fe02SmattSTRONG_ALIAS(_atomic_dec_ptr_nv,_atomic_dec_32_nv) 956cf6fe02Smatt#endif 96