11.3Sriastrad/* $NetBSD: atomic_cas_up.S,v 1.3 2022/04/06 22:47:56 riastradh Exp $ */ 21.1Smartin 31.1Smartin/*- 41.1Smartin * Copyright (c) 2012 The NetBSD Foundation, Inc. 51.1Smartin * All rights reserved. 61.1Smartin * 71.1Smartin * Redistribution and use in source and binary forms, with or without 81.1Smartin * modification, are permitted provided that the following conditions 91.1Smartin * are met: 101.1Smartin * 1. Redistributions of source code must retain the above copyright 111.1Smartin * notice, this list of conditions and the following disclaimer. 121.1Smartin * 2. Redistributions in binary form must reproduce the above copyright 131.1Smartin * notice, this list of conditions and the following disclaimer in the 141.1Smartin * documentation and/or other materials provided with the distribution. 151.3Sriastrad * 161.1Smartin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 171.1Smartin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 181.1Smartin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 191.1Smartin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 201.1Smartin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 211.1Smartin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 221.1Smartin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 231.1Smartin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 241.1Smartin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 251.1Smartin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 261.1Smartin * POSSIBILITY OF SUCH DAMAGE. 271.1Smartin */ 281.1Smartin 291.1Smartin#include <sys/ras.h> 301.1Smartin#include "atomic_op_asm.h" 311.1Smartin 321.1Smartin .text 331.1Smartin 341.1SmartinENTRY(_atomic_cas_up) 351.1Smartin .hidden _C_LABEL(_atomic_cas_up) 361.1SmartinRAS_START_ASM_HIDDEN(_atomic_cas) 371.1Smartin ld [%o0], %o3 ! get old value 381.1Smartin cmp %o1, %o3 ! old == new? 391.1Smartin beq,a 1f ! yes, do the store 401.1Smartin st %o2, [%o0] ! (in the delay slot) 411.1SmartinRAS_END_ASM_HIDDEN(_atomic_cas) 421.1Smartin1: 431.1Smartin retl 441.1Smartin mov %o3, %o0 ! return old value 451.1Smartin 461.2SmartinENTRY(_atomic_cas_16_up) 471.2Smartin .hidden _C_LABEL(_atomic_cas_16_up) 481.2SmartinRAS_START_ASM_HIDDEN(_atomic_cas_16) 491.2Smartin lduh [%o0], %o3 ! get old value 501.2Smartin cmp %o1, %o3 ! old == new? 511.2Smartin beq,a 1f ! yes, do the store 521.2Smartin sth %o2, [%o0] ! (in the delay slot) 531.2SmartinRAS_END_ASM_HIDDEN(_atomic_cas_16) 541.2Smartin1: 551.2Smartin retl 561.2Smartin mov %o3, %o0 ! return old value 571.2Smartin 581.2SmartinENTRY(_atomic_cas_8_up) 591.2Smartin .hidden _C_LABEL(_atomic_cas_8_up) 601.2SmartinRAS_START_ASM_HIDDEN(_atomic_cas_8) 611.2Smartin ldub [%o0], %o3 ! get old value 621.2Smartin cmp %o1, %o3 ! old == new? 631.2Smartin beq,a 1f ! yes, do the store 641.2Smartin stb %o2, [%o0] ! (in the delay slot) 651.2SmartinRAS_END_ASM_HIDDEN(_atomic_cas_8) 661.2Smartin1: 671.2Smartin retl 681.2Smartin mov %o3, %o0 ! return old value 691.2Smartin 70