11.3Sskrll/* $NetBSD: atomic_sub_64.S,v 1.3 2023/05/07 12:41:45 skrll Exp $ */ 21.1Smatt 31.1Smatt/*- 41.1Smatt * Copyright (c) 2014 The NetBSD Foundation, Inc. 51.1Smatt * All rights reserved. 61.1Smatt * 71.1Smatt * This code is derived from software contributed to The NetBSD Foundation 81.1Smatt * by Matt Thomas of 3am Software Foundry. 91.1Smatt * 101.1Smatt * Redistribution and use in source and binary forms, with or without 111.1Smatt * modification, are permitted provided that the following conditions 121.1Smatt * are met: 131.1Smatt * 1. Redistributions of source code must retain the above copyright 141.1Smatt * notice, this list of conditions and the following disclaimer. 151.1Smatt * 2. Redistributions in binary form must reproduce the above copyright 161.1Smatt * notice, this list of conditions and the following disclaimer in the 171.1Smatt * documentation and/or other materials provided with the distribution. 181.1Smatt * 191.1Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 201.1Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 211.1Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 221.1Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 231.1Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 241.1Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 251.1Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 261.1Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 271.1Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 281.1Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 291.1Smatt * POSSIBILITY OF SUCH DAMAGE. 301.1Smatt */ 311.1Smatt 321.1Smatt#include "atomic_op_asm.h" 331.1Smatt 341.1SmattENTRY_NP(_atomic_dec_64) 351.1Smatt li a1, 1 361.1SmattENTRY_NP(_atomic_sub_64) 371.2Smatt neg t1, a1 381.2Smatt amoadd.d.aq a0, t1, 0(a0) 391.1Smatt ret 401.1SmattEND(_atomic_sub_64) 411.1SmattEND(_atomic_dec_64) 421.1Smatt 431.1SmattATOMIC_OP_ALIAS(atomic_sub_64,_atomic_sub_64) 441.1SmattATOMIC_OP_ALIAS(atomic_sub_long,_atomic_sub_64) 451.1SmattSTRONG_ALIAS(_atomic_sub_long,_atomic_sub_64) 461.1SmattATOMIC_OP_ALIAS(atomic_sub_ptr,_atomic_sub_64) 471.1SmattSTRONG_ALIAS(_atomic_sub_ptr,_atomic_sub_64) 481.1SmattCRT_ALIAS(__sync_fetch_and_sub_8,_atomic_sub_64) 491.1SmattCRT_ALIAS(__atomic_fetch_sub_8,_atomic_sub_64) 501.1Smatt 511.1SmattATOMIC_OP_ALIAS(atomic_dec_64,_atomic_dec_64) 521.1SmattATOMIC_OP_ALIAS(atomic_dec_ulong,_atomic_dec_64) 531.1SmattSTRONG_ALIAS(_atomic_dec_ulong,_atomic_dec_64) 541.1SmattATOMIC_OP_ALIAS(atomic_dec_ptr,_atomic_dec_64) 551.1SmattSTRONG_ALIAS(_atomic_dec_ptr,_atomic_dec_64) 561.1Smatt 571.1SmattENTRY_NP(_atomic_dec_64_nv) 581.1Smatt li a1, 1 591.1SmattENTRY_NP(_atomic_sub_64_nv) 601.2Smatt neg t1, a1 611.2Smatt amoadd.d.aq t0, t1, 0(a0) /* update memory and get old value */ 621.2Smatt add a0, t0, t1 /* turn into new value */ 631.1Smatt ret 641.1SmattEND(_atomic_sub_64_nv) 651.1SmattEND(_atomic_dec_64_nv) 661.1Smatt 671.1SmattATOMIC_OP_ALIAS(atomic_sub_64_nv,_atomic_sub_64_nv) 681.1SmattATOMIC_OP_ALIAS(atomic_sub_long_nv,_atomic_sub_64_nv) 691.1SmattSTRONG_ALIAS(_atomic_sub_long_nv,_atomic_sub_64_nv) 701.1SmattATOMIC_OP_ALIAS(atomic_sub_ptr_nv,_atomic_sub_64_nv) 711.1SmattSTRONG_ALIAS(_atomic_sub_ptr_nv,_atomic_sub_64_nv) 721.1SmattCRT_ALIAS(__sync_sub_and_fetch_8,_atomic_sub_64_nv) 731.1SmattCRT_ALIAS(__atomic_sub_fetch_8,_atomic_sub_64_nv) 741.1Smatt 751.1SmattATOMIC_OP_ALIAS(atomic_dec_64_nv,_atomic_dec_64_nv) 761.1SmattATOMIC_OP_ALIAS(atomic_dec_ulong_nv,_atomic_dec_64_nv) 771.1SmattSTRONG_ALIAS(_atomic_dec_ulong_nv,_atomic_dec_64_nv) 781.3SskrllATOMIC_OP_ALIAS(atomic_dec_ptr_nv,_atomic_dec_64_nv) 791.1SmattSTRONG_ALIAS(_atomic_sub_ptr_nv,_atomic_sub_64_nv) 80