1*0a6a1f1dSLionel Sambuc/* $NetBSD: atomic_cas_68000.S,v 1.6 2014/01/29 10:20:11 martin Exp $ */ 2b6cbf720SGianluca Guida 3b6cbf720SGianluca Guida/*- 4b6cbf720SGianluca Guida * Copyright (c) 2008 The NetBSD Foundation, Inc. 5b6cbf720SGianluca Guida * All rights reserved. 6b6cbf720SGianluca Guida * 7b6cbf720SGianluca Guida * This code is derived from software contributed to The NetBSD Foundation 8b6cbf720SGianluca Guida * by Steve C. Woodford. 9b6cbf720SGianluca Guida * 10b6cbf720SGianluca Guida * Redistribution and use in source and binary forms, with or without 11b6cbf720SGianluca Guida * modification, are permitted provided that the following conditions 12b6cbf720SGianluca Guida * are met: 13b6cbf720SGianluca Guida * 1. Redistributions of source code must retain the above copyright 14b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer. 15b6cbf720SGianluca Guida * 2. Redistributions in binary form must reproduce the above copyright 16b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer in the 17b6cbf720SGianluca Guida * documentation and/or other materials provided with the distribution. 18b6cbf720SGianluca Guida * 19b6cbf720SGianluca Guida * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20b6cbf720SGianluca Guida * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21b6cbf720SGianluca Guida * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22b6cbf720SGianluca Guida * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23b6cbf720SGianluca Guida * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24b6cbf720SGianluca Guida * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25b6cbf720SGianluca Guida * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26b6cbf720SGianluca Guida * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27b6cbf720SGianluca Guida * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28b6cbf720SGianluca Guida * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29b6cbf720SGianluca Guida * POSSIBILITY OF SUCH DAMAGE. 30b6cbf720SGianluca Guida */ 31b6cbf720SGianluca Guida 32b6cbf720SGianluca Guida#include <sys/ras.h> 33b6cbf720SGianluca Guida#include "atomic_op_asm.h" 34b6cbf720SGianluca Guida 35b6cbf720SGianluca Guida .text 36b6cbf720SGianluca Guida 37b6cbf720SGianluca GuidaENTRY(_atomic_cas_up) 38b6cbf720SGianluca Guida .hidden _C_LABEL(_atomic_cas_up) 39b6cbf720SGianluca Guida 4084d9c625SLionel Sambuc movl 4(%sp), %a0 /* Fetch ptr */ 41b6cbf720SGianluca Guida 42b6cbf720SGianluca GuidaRAS_START_ASM_HIDDEN(_atomic_cas) 4384d9c625SLionel Sambuc movl (%a0), %d0 /* d0 = *ptr */ 4484d9c625SLionel Sambuc cmpl 8(%sp), %d0 /* Same as old? */ 45b6cbf720SGianluca Guida jne 1f /* Nope */ 4684d9c625SLionel Sambuc movl 12(%sp), (%a0) /* *ptr = new */ 47b6cbf720SGianluca GuidaRAS_END_ASM_HIDDEN(_atomic_cas) 48b6cbf720SGianluca Guida1: rts 4984d9c625SLionel SambucEND(_atomic_cas_up) 50*0a6a1f1dSLionel Sambuc 51*0a6a1f1dSLionel SambucENTRY(_atomic_cas_16_up) 52*0a6a1f1dSLionel Sambuc .hidden _C_LABEL(_atomic_cas_16_up) 53*0a6a1f1dSLionel Sambuc 54*0a6a1f1dSLionel Sambuc movl 4(%sp), %a0 /* Fetch ptr */ 55*0a6a1f1dSLionel Sambuc 56*0a6a1f1dSLionel SambucRAS_START_ASM_HIDDEN(_atomic_cas_16) 57*0a6a1f1dSLionel Sambuc movw (%a0), %d0 /* d0 = *ptr */ 58*0a6a1f1dSLionel Sambuc cmpw 8(%sp), %d0 /* Same as old? */ 59*0a6a1f1dSLionel Sambuc jne 1f /* Nope */ 60*0a6a1f1dSLionel Sambuc movw 12(%sp), (%a0) /* *ptr = new */ 61*0a6a1f1dSLionel SambucRAS_END_ASM_HIDDEN(_atomic_cas_16) 62*0a6a1f1dSLionel Sambuc1: rts 63*0a6a1f1dSLionel SambucEND(_atomic_cas_16_up) 64*0a6a1f1dSLionel Sambuc 65*0a6a1f1dSLionel Sambuc 66*0a6a1f1dSLionel SambucENTRY(_atomic_cas_8_up) 67*0a6a1f1dSLionel Sambuc .hidden _C_LABEL(_atomic_cas_8_up) 68*0a6a1f1dSLionel Sambuc 69*0a6a1f1dSLionel Sambuc movl 4(%sp), %a0 /* Fetch ptr */ 70*0a6a1f1dSLionel Sambuc 71*0a6a1f1dSLionel SambucRAS_START_ASM_HIDDEN(_atomic_cas_8) 72*0a6a1f1dSLionel Sambuc movb (%a0), %d0 /* d0 = *ptr */ 73*0a6a1f1dSLionel Sambuc cmpb 8(%sp), %d0 /* Same as old? */ 74*0a6a1f1dSLionel Sambuc jne 1f /* Nope */ 75*0a6a1f1dSLionel Sambuc movb 12(%sp), (%a0) /* *ptr = new */ 76*0a6a1f1dSLionel SambucRAS_END_ASM_HIDDEN(_atomic_cas_8) 77*0a6a1f1dSLionel Sambuc1: rts 78*0a6a1f1dSLionel SambucEND(_atomic_cas_8_up) 79