68 lines
2.3 KiB
ArmAsm
68 lines
2.3 KiB
ArmAsm
/* $NetBSD: pthread_md.S,v 1.1 2009/05/16 22:20:40 ad Exp $ */
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/*
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Wayne Knowles
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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LEAF_ENTRY(pthread__ras_simple_lock_init)
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ldi 1,%ret0 /* 1 == unlocked */
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stw %ret0,0(%arg0)
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stw %ret0,4(%arg0)
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stw %ret0,8(%arg0)
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stw %ret0,12(%arg0)
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bv,n %r0(%rp)
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EXIT(pthread__ras_simple_lock_init)
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.global pthread__lock_ras_start
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.global pthread__lock_ras_end
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LEAF_ENTRY(pthread__ras_simple_lock_try)
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ldo 15(%arg0),%arg0
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depi 0,31,4,%arg0
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pthread__lock_ras_start:
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ldw 0(%arg0),%ret0
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stw %r0,0(%arg0) /* 0 == locked */
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pthread__lock_ras_end:
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comiclr,= 0,%ret0,%ret0 /* if locked return 0 */
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ldi 1,%ret0 /* else return 1 */
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bv,n %r0(%rp)
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EXIT(pthread__ras_simple_lock_try)
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LEAF_ENTRY(pthread__ras_simple_unlock)
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ldo 15(%arg0),%arg0
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depi 0,31,4,%arg0
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ldi 1,%ret0 /* 1 == unlocked */
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bv %r0(%rp)
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stw %ret0,0(%arg0)
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EXIT(pthread__ras_simple_unlock)
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