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atomic_dec.S revision 1.2.4.3 
      1  1.2.4.3  matt /*	atomic_dec.S,v 1.2.4.2 2008/01/09 01:21:01 matt Exp	*/
      2  1.2.4.2  matt 
      3  1.2.4.2  matt /*-
      4  1.2.4.2  matt  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  1.2.4.2  matt  * All rights reserved.
      6  1.2.4.2  matt  *
      7  1.2.4.2  matt  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2.4.2  matt  * by Jason R. Thorpe.
      9  1.2.4.2  matt  *
     10  1.2.4.2  matt  * Redistribution and use in source and binary forms, with or without
     11  1.2.4.2  matt  * modification, are permitted provided that the following conditions
     12  1.2.4.2  matt  * are met:
     13  1.2.4.2  matt  * 1. Redistributions of source code must retain the above copyright
     14  1.2.4.2  matt  *    notice, this list of conditions and the following disclaimer.
     15  1.2.4.2  matt  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.2.4.2  matt  *    notice, this list of conditions and the following disclaimer in the
     17  1.2.4.2  matt  *    documentation and/or other materials provided with the distribution.
     18  1.2.4.2  matt  * 3. All advertising materials mentioning features or use of this software
     19  1.2.4.2  matt  *    must display the following acknowledgement:
     20  1.2.4.2  matt  *	This product includes software developed by the NetBSD
     21  1.2.4.2  matt  *	Foundation, Inc. and its contributors.
     22  1.2.4.2  matt  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.2.4.2  matt  *    contributors may be used to endorse or promote products derived
     24  1.2.4.2  matt  *    from this software without specific prior written permission.
     25  1.2.4.2  matt  *
     26  1.2.4.2  matt  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.2.4.2  matt  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.2.4.2  matt  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.2.4.2  matt  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.2.4.2  matt  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.2.4.2  matt  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.2.4.2  matt  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.2.4.2  matt  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.2.4.2  matt  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.2.4.2  matt  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.2.4.2  matt  * POSSIBILITY OF SUCH DAMAGE.
     37  1.2.4.2  matt  */
     38  1.2.4.2  matt 
     39  1.2.4.2  matt #include "atomic_op_asm.h"
     40  1.2.4.2  matt 
     41  1.2.4.2  matt 	.text
     42  1.2.4.2  matt 
     43  1.2.4.2  matt ENTRY_NOPROFILE(_atomic_dec_32)
     44  1.2.4.3  matt 1:	lwarx	%r10,0,%r3
     45  1.2.4.3  matt 	addi	%r10,%r10,-1
     46  1.2.4.3  matt 	stwcx.	%r10,0,%r3
     47  1.2.4.2  matt 	bne-	1b
     48  1.2.4.2  matt 	blr
     49  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_32,_atomic_dec_32)
     50  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_uint,_atomic_dec_32)
     51  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_uint,_atomic_dec_32)
     52  1.2.4.2  matt #if !defined(_LP64)
     53  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_ulong,_atomic_dec_32)
     54  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_ulong,_atomic_dec_32)
     55  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_ptr,_atomic_dec_32)
     56  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_ptr,_atomic_dec_32)
     57  1.2.4.2  matt #endif
     58  1.2.4.2  matt 
     59  1.2.4.2  matt ENTRY_NOPROFILE(_atomic_dec_32_nv)
     60  1.2.4.3  matt 1:	lwarx	%r10,0,%r3
     61  1.2.4.3  matt 	addi	%r10,%r10,-1
     62  1.2.4.3  matt 	stwcx.	%r10,0,%r3
     63  1.2.4.2  matt 	bne-	1b
     64  1.2.4.3  matt 	mr	%r3,%r10
     65  1.2.4.2  matt 	blr
     66  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_32_nv,_atomic_dec_32_nv)
     67  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_uint_nv,_atomic_dec_32_nv)
     68  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_uint_nv,_atomic_dec_32_nv)
     69  1.2.4.2  matt #if !defined(_LP64)
     70  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_ulong_nv,_atomic_dec_32_nv)
     71  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_ulong_nv,_atomic_dec_32_nv)
     72  1.2.4.2  matt ATOMIC_OP_ALIAS(atomic_dec_ptr_nv,_atomic_dec_32_nv)
     73  1.2.4.2  matt STRONG_ALIAS(_atomic_dec_ptr_nv,_atomic_dec_32_nv)
     74  1.2.4.2  matt #endif
     75