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atomic_or.S revision 1.4.34.2 
      1 /*	$NetBSD: atomic_or.S,v 1.4.34.2 2020/04/21 19:37:44 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <machine/asm.h>
     30 #include "atomic_op_asm.h"
     31 
     32 	.text
     33 	.set	noreorder
     34 #ifdef _KERNEL_OPT
     35 #include "opt_cputype.h"
     36 #ifndef MIPS3_LOONGSON2F
     37 	.set	noat
     38 	.set	nomacro
     39 #endif
     40 #else /* _KERNEL_OPT */
     41 	.set	noat
     42 	.set	nomacro
     43 #endif /* _KERNEL_OPT */
     44 
     45 LEAF(_atomic_or_32)
     46 1:	INT_LL		t0, 0(a0)
     47 	 nop
     48 	or		t0, a1
     49 	INT_SC		t0, 0(a0)
     50 	beq		t0, zero, 1b
     51  	 nop
     52 	j		ra
     53 	 nop
     54 END(_atomic_or_32)
     55 ATOMIC_OP_ALIAS(atomic_or_32, _atomic_or_32)
     56 
     57 LEAF(_atomic_or_32_nv)
     58 1:	INT_LL		v0, 0(a0)
     59 	 nop
     60 	or		v0, a1
     61 	move		t0, v0
     62 	INT_SC		t0, 0(a0)
     63 	beq		t0, zero, 1b
     64  	 nop
     65 	j		ra
     66 	 nop
     67 END(_atomic_or_32_nv)
     68 ATOMIC_OP_ALIAS(atomic_or_32_nv, _atomic_or_32_nv)
     69 
     70 #if !defined(__mips_o32)
     71 LEAF(_atomic_or_64)
     72 1:	REG_LL		t0, 0(a0)
     73 	 nop
     74 	or		t0, a1
     75 	REG_SC		t0, 0(a0)
     76 	beq		t0, zero, 1b
     77  	 nop
     78 	j		ra
     79 	 nop
     80 END(_atomic_or_64)
     81 ATOMIC_OP_ALIAS(atomic_or_64, _atomic_or_64)
     82 
     83 LEAF(_atomic_or_64_nv)
     84 1:	REG_LL		v0, 0(a0)
     85 	 nop
     86 	or		v0, a1
     87 	move		t0, v0
     88 	REG_SC		t0, 0(a0)
     89 	beq		t0, zero, 1b
     90  	 nop
     91 	j		ra
     92 	 nop
     93 END(_atomic_or_64_nv)
     94 ATOMIC_OP_ALIAS(atomic_or_64_nv, _atomic_or_64_nv)
     95 #endif
     96 
     97 #ifdef _LP64
     98 STRONG_ALIAS(_atomic_or_ulong,		_atomic_or_64)
     99 STRONG_ALIAS(_atomic_or_ulong_nv,	_atomic_or_64_nv)
    100 #else
    101 STRONG_ALIAS(_atomic_or_ulong,		_atomic_or_32)
    102 STRONG_ALIAS(_atomic_or_ulong_nv,	_atomic_or_32_nv)
    103 #endif
    104 STRONG_ALIAS(_atomic_or_uint,		_atomic_or_32)
    105 STRONG_ALIAS(_atomic_or_uint_nv,	_atomic_or_32_nv)
    106 
    107 ATOMIC_OP_ALIAS(atomic_or_uint,		_atomic_or_uint)
    108 ATOMIC_OP_ALIAS(atomic_or_uint_nv,	_atomic_or_uint_nv)
    109 ATOMIC_OP_ALIAS(atomic_or_ulong,	_atomic_or_ulong)
    110 ATOMIC_OP_ALIAS(atomic_or_ulong_nv,	_atomic_or_ulong_nv)
    111