54 lines
2.2 KiB
ArmAsm
54 lines
2.2 KiB
ArmAsm
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/* $NetBSD: swapcontext.S,v 1.4 2008/04/28 20:22:56 martin 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 Klaus Klein.
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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 "SYS.h"
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#include <machine/mcontext.h>
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#if defined(SYSLIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: swapcontext.S,v 1.4 2008/04/28 20:22:56 martin Exp $")
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#endif /* SYSLIBC_SCCS && !lint */
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LEAF_ENTRY(swapcontext)
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stw %rp, HPPA_FRAME_CRP(%sp)
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stw %arg0, HPPA_FRAME_ARG(0)(%sp)
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stw %arg1, HPPA_FRAME_ARG(1)(%sp)
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SYSCALL(getcontext)
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ldw HPPA_FRAME_ARG(0)(%sp), %arg1
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ldw HPPA_FRAME_ARG(1)(%sp), %arg0
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stw %r0, (_OFFSETOF_UC_GREGS + _REG_RET0 * SZREG)(%arg1)
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ldo 4(%rp), %r1
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stw %r1, (_OFFSETOF_UC_GREGS + _REG_PCOQT * SZREG)(%arg1)
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stw %rp, (_OFFSETOF_UC_GREGS + _REG_PCOQH * SZREG)(%arg1)
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SYSCALL(setcontext)
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EXIT(swapcontext)
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.end
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