11.3Sskrll/*	$NetBSD: atomic_cas_up.S,v 1.3 2020/08/01 09:26:49 skrll Exp $	*/
21.1Sad
31.1Sad/*-
41.1Sad * Copyright (c) 2008 The NetBSD Foundation, Inc.
51.1Sad * All rights reserved.
61.1Sad *
71.1Sad * Redistribution and use in source and binary forms, with or without
81.1Sad * modification, are permitted provided that the following conditions
91.1Sad * are met:
101.1Sad * 1. Redistributions of source code must retain the above copyright
111.1Sad *    notice, this list of conditions and the following disclaimer.
121.1Sad * 2. Redistributions in binary form must reproduce the above copyright
131.1Sad *    notice, this list of conditions and the following disclaimer in the
141.1Sad *    documentation and/or other materials provided with the distribution.
151.3Sskrll *
161.1Sad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
171.1Sad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
181.1Sad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
191.1Sad * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
201.1Sad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
211.1Sad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
221.1Sad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
231.1Sad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
241.1Sad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
251.1Sad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
261.1Sad * POSSIBILITY OF SUCH DAMAGE.
271.1Sad */
281.1Sad
291.1Sad#include <sys/ras.h>
301.1Sad#include "atomic_op_asm.h"
311.1Sad
321.1Sad	.text
331.1Sad	.set	noat
341.1Sad	.set	noreorder
351.1Sad
361.2SchsLEAF(_atomic_cas_up)
371.1Sad	.hidden	_C_LABEL(_atomic_cas_up)
381.1SadRAS_START_ASM_HIDDEN(_atomic_cas)
391.1Sad	lw	t0, (a0)
401.1Sad	 nop
411.1Sad	bne	t0, a1, 1f
421.1Sad 	 nop
431.1Sad	sw	a2, (a0)
441.1SadRAS_END_ASM_HIDDEN(_atomic_cas)
451.1Sad	j	ra
461.1Sad	 addu	v0, zero, a1
471.1Sad1:
481.1Sad	j	ra
491.1Sad	 addu	v0, zero, t0
501.1SadEND(_atomic_cas_up)
51