1*0a6a1f1dSLionel Sambuc/* $NetBSD: atomic_cas_up.S,v 1.2 2014/01/29 13:06:36 martin Exp $ */ 284d9c625SLionel Sambuc 384d9c625SLionel Sambuc/*- 484d9c625SLionel Sambuc * Copyright (c) 2012 The NetBSD Foundation, Inc. 584d9c625SLionel Sambuc * All rights reserved. 684d9c625SLionel Sambuc * 784d9c625SLionel Sambuc * Redistribution and use in source and binary forms, with or without 884d9c625SLionel Sambuc * modification, are permitted provided that the following conditions 984d9c625SLionel Sambuc * are met: 1084d9c625SLionel Sambuc * 1. Redistributions of source code must retain the above copyright 1184d9c625SLionel Sambuc * notice, this list of conditions and the following disclaimer. 1284d9c625SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright 1384d9c625SLionel Sambuc * notice, this list of conditions and the following disclaimer in the 1484d9c625SLionel Sambuc * documentation and/or other materials provided with the distribution. 1584d9c625SLionel Sambuc * 1684d9c625SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 1784d9c625SLionel Sambuc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 1884d9c625SLionel Sambuc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 1984d9c625SLionel Sambuc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 2084d9c625SLionel Sambuc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2184d9c625SLionel Sambuc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2284d9c625SLionel Sambuc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2384d9c625SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2484d9c625SLionel Sambuc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2584d9c625SLionel Sambuc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 2684d9c625SLionel Sambuc * POSSIBILITY OF SUCH DAMAGE. 2784d9c625SLionel Sambuc */ 2884d9c625SLionel Sambuc 2984d9c625SLionel Sambuc#include <sys/ras.h> 3084d9c625SLionel Sambuc#include "atomic_op_asm.h" 3184d9c625SLionel Sambuc 3284d9c625SLionel Sambuc .text 3384d9c625SLionel Sambuc 3484d9c625SLionel SambucENTRY(_atomic_cas_up) 3584d9c625SLionel Sambuc .hidden _C_LABEL(_atomic_cas_up) 3684d9c625SLionel SambucRAS_START_ASM_HIDDEN(_atomic_cas) 3784d9c625SLionel Sambuc ld [%o0], %o3 ! get old value 3884d9c625SLionel Sambuc cmp %o1, %o3 ! old == new? 3984d9c625SLionel Sambuc beq,a 1f ! yes, do the store 4084d9c625SLionel Sambuc st %o2, [%o0] ! (in the delay slot) 4184d9c625SLionel SambucRAS_END_ASM_HIDDEN(_atomic_cas) 4284d9c625SLionel Sambuc1: 4384d9c625SLionel Sambuc retl 4484d9c625SLionel Sambuc mov %o3, %o0 ! return old value 4584d9c625SLionel Sambuc 46*0a6a1f1dSLionel SambucENTRY(_atomic_cas_16_up) 47*0a6a1f1dSLionel Sambuc .hidden _C_LABEL(_atomic_cas_16_up) 48*0a6a1f1dSLionel SambucRAS_START_ASM_HIDDEN(_atomic_cas_16) 49*0a6a1f1dSLionel Sambuc lduh [%o0], %o3 ! get old value 50*0a6a1f1dSLionel Sambuc cmp %o1, %o3 ! old == new? 51*0a6a1f1dSLionel Sambuc beq,a 1f ! yes, do the store 52*0a6a1f1dSLionel Sambuc sth %o2, [%o0] ! (in the delay slot) 53*0a6a1f1dSLionel SambucRAS_END_ASM_HIDDEN(_atomic_cas_16) 54*0a6a1f1dSLionel Sambuc1: 55*0a6a1f1dSLionel Sambuc retl 56*0a6a1f1dSLionel Sambuc mov %o3, %o0 ! return old value 57*0a6a1f1dSLionel Sambuc 58*0a6a1f1dSLionel SambucENTRY(_atomic_cas_8_up) 59*0a6a1f1dSLionel Sambuc .hidden _C_LABEL(_atomic_cas_8_up) 60*0a6a1f1dSLionel SambucRAS_START_ASM_HIDDEN(_atomic_cas_8) 61*0a6a1f1dSLionel Sambuc ldub [%o0], %o3 ! get old value 62*0a6a1f1dSLionel Sambuc cmp %o1, %o3 ! old == new? 63*0a6a1f1dSLionel Sambuc beq,a 1f ! yes, do the store 64*0a6a1f1dSLionel Sambuc stb %o2, [%o0] ! (in the delay slot) 65*0a6a1f1dSLionel SambucRAS_END_ASM_HIDDEN(_atomic_cas_8) 66*0a6a1f1dSLionel Sambuc1: 67*0a6a1f1dSLionel Sambuc retl 68*0a6a1f1dSLionel Sambuc mov %o3, %o0 ! return old value 69*0a6a1f1dSLionel Sambuc 70