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atomic_cas.S revision 1.4.16.3
      1  1.4.16.3    martin /*	$NetBSD: atomic_cas.S,v 1.4.16.3 2020/04/21 19:37:44 martin Exp $	*/
      2       1.2      matt 
      3       1.2      matt /*-
      4       1.2      matt  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5       1.2      matt  * All rights reserved.
      6       1.2      matt  *
      7       1.2      matt  * Redistribution and use in source and binary forms, with or without
      8       1.2      matt  * modification, are permitted provided that the following conditions
      9       1.2      matt  * are met:
     10       1.2      matt  * 1. Redistributions of source code must retain the above copyright
     11       1.2      matt  *    notice, this list of conditions and the following disclaimer.
     12       1.2      matt  * 2. Redistributions in binary form must reproduce the above copyright
     13       1.2      matt  *    notice, this list of conditions and the following disclaimer in the
     14       1.2      matt  *    documentation and/or other materials provided with the distribution.
     15       1.2      matt  *
     16       1.2      matt  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17       1.2      matt  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18       1.2      matt  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19       1.2      matt  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20       1.2      matt  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21       1.2      matt  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22       1.2      matt  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23       1.2      matt  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24       1.2      matt  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25       1.2      matt  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26       1.2      matt  * POSSIBILITY OF SUCH DAMAGE.
     27       1.2      matt  */
     28       1.2      matt 
     29       1.2      matt #include <machine/asm.h>
     30       1.2      matt #include "atomic_op_asm.h"
     31       1.2      matt 
     32  1.4.16.3    martin RCSID("$NetBSD: atomic_cas.S,v 1.4.16.3 2020/04/21 19:37:44 martin Exp $")
     33       1.2      matt 
     34       1.2      matt 	.text
     35       1.2      matt 	.set	noat
     36       1.2      matt 	.set	noreorder
     37       1.2      matt 	.set	nomacro
     38       1.2      matt 
     39       1.2      matt LEAF(_atomic_cas_32)
     40       1.2      matt 1:	INT_LL		v0, 0(a0)
     41       1.2      matt 	 nop
     42       1.2      matt 	bne		v0, a1, 2f
     43       1.2      matt 	 nop
     44       1.2      matt 	move		t0, a2
     45       1.2      matt 	INT_SC		t0, 0(a0)
     46       1.2      matt 	beq		t0, zero, 1b
     47       1.2      matt  	 nop
     48       1.2      matt 	move		v0, a1
     49       1.4      matt #ifdef _MIPS_ARCH_OCTEONP
     50       1.4      matt 	syncw
     51       1.4      matt #endif
     52       1.2      matt 2:
     53       1.2      matt 	j		ra
     54       1.2      matt 	 nop
     55       1.2      matt END(_atomic_cas_32)
     56       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_32, _atomic_cas_32)
     57  1.4.16.1  christos ATOMIC_OP_ALIAS(atomic_cas_32_ni, _atomic_cas_32)
     58       1.2      matt 
     59       1.2      matt #if !defined(__mips_o32)
     60       1.2      matt LEAF(_atomic_cas_64)
     61       1.2      matt 1:	REG_LL		v0, 0(a0)
     62       1.2      matt 	 nop
     63       1.2      matt 	bne		v0, a1, 2f
     64       1.2      matt 	 nop
     65       1.2      matt 	move		t0, a2
     66       1.2      matt 	REG_SC		t0, 0(a0)
     67       1.2      matt 	beq		t0, zero, 1b
     68       1.2      matt  	 nop
     69       1.2      matt 	move		v0, a1
     70       1.4      matt #ifdef _MIPS_ARCH_OCTEONP
     71       1.4      matt 	syncw
     72       1.4      matt #endif
     73       1.2      matt 2:
     74       1.2      matt 	j		ra
     75       1.2      matt 	 nop
     76       1.2      matt END(_atomic_cas_64)
     77       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_64, _atomic_cas_64)
     78  1.4.16.1  christos ATOMIC_OP_ALIAS(atomic_cas_64_ni, _atomic_cas_64)
     79       1.2      matt #endif
     80       1.2      matt 
     81       1.2      matt #ifdef _LP64
     82       1.2      matt STRONG_ALIAS(_atomic_cas_ptr,		_atomic_cas_64)
     83       1.2      matt STRONG_ALIAS(_atomic_cas_ptr_ni,	_atomic_cas_64)
     84       1.2      matt STRONG_ALIAS(_atomic_cas_ulong,		_atomic_cas_64)
     85       1.2      matt STRONG_ALIAS(_atomic_cas_ulong_ni,	_atomic_cas_64)
     86       1.2      matt #else
     87       1.2      matt STRONG_ALIAS(_atomic_cas_ptr,		_atomic_cas_32)
     88       1.2      matt STRONG_ALIAS(_atomic_cas_ptr_ni,	_atomic_cas_32)
     89       1.2      matt STRONG_ALIAS(_atomic_cas_ulong,		_atomic_cas_32)
     90       1.2      matt STRONG_ALIAS(_atomic_cas_ulong_ni,	_atomic_cas_32)
     91       1.2      matt #endif
     92       1.2      matt STRONG_ALIAS(_atomic_cas_uint,		_atomic_cas_32)
     93       1.2      matt STRONG_ALIAS(_atomic_cas_uint_ni,	_atomic_cas_32)
     94       1.2      matt 
     95       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_ptr,		_atomic_cas_ptr)
     96       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,	_atomic_cas_ptr_ni)
     97       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_uint,	_atomic_cas_uint)
     98       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_uint_ni,	_atomic_cas_uint_ni)
     99       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_ulong,	_atomic_cas_ulong)
    100       1.2      matt ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,	_atomic_cas_ulong_ni)
    101