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getcontext.S revision 1.3.14.2 
      1  1.3.14.2  uebayasi /*	$NetBSD: getcontext.S,v 1.3.14.2 2009/08/18 15:16:23 uebayasi Exp $	*/
      2       1.2   thorpej 
      3       1.2   thorpej /*-
      4       1.2   thorpej  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5       1.2   thorpej  * All rights reserved.
      6       1.2   thorpej  *
      7       1.2   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8       1.2   thorpej  * by Klaus Klein.
      9       1.2   thorpej  *
     10       1.2   thorpej  * Redistribution and use in source and binary forms, with or without
     11       1.2   thorpej  * modification, are permitted provided that the following conditions
     12       1.2   thorpej  * are met:
     13       1.2   thorpej  * 1. Redistributions of source code must retain the above copyright
     14       1.2   thorpej  *    notice, this list of conditions and the following disclaimer.
     15       1.2   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16       1.2   thorpej  *    notice, this list of conditions and the following disclaimer in the
     17       1.2   thorpej  *    documentation and/or other materials provided with the distribution.
     18       1.2   thorpej  *
     19       1.2   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20       1.2   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.2   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.2   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23       1.2   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.2   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.2   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.2   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.2   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.2   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.2   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30       1.2   thorpej  */
     31       1.2   thorpej 
     32       1.2   thorpej #include "SYS.h"
     33  1.3.14.2  uebayasi #include "assym.h"
     34       1.2   thorpej #include <machine/mcontext.h>
     35       1.2   thorpej 
     36       1.2   thorpej #if defined(SYSLIBC_SCCS) && !defined(lint)
     37  1.3.14.2  uebayasi 	RCSID("$NetBSD: getcontext.S,v 1.3.14.2 2009/08/18 15:16:23 uebayasi Exp $")
     38       1.2   thorpej #endif /* SYSLIBC_SCCS && !lint */
     39       1.2   thorpej 
     40       1.2   thorpej #ifdef WEAK_ALIAS
     41       1.2   thorpej WEAK_ALIAS(getcontext, _getcontext)
     42       1.2   thorpej #endif
     43       1.2   thorpej 	.set reorder
     44       1.2   thorpej 
     45       1.2   thorpej LEAF(_getcontext)
     46  1.3.14.1      matt 	PIC_PROLOGUE(_getcontext)
     47       1.2   thorpej 	SYSTRAP(getcontext)
     48  1.3.14.1      matt 	bne		a3, zero, 1f
     49       1.2   thorpej 	REG_PROLOGUE
     50  1.3.14.1      matt 	REG_S		zero, (_OFFSETOF_UC_GREGS + _REG_V0 * SZREG)(a0)
     51  1.3.14.1      matt 	REG_S		ra, (_OFFSETOF_UC_GREGS + _REG_EPC * SZREG)(a0)
     52       1.2   thorpej 	REG_EPILOGUE
     53  1.3.14.1      matt 	PIC_RETURN()
     54       1.2   thorpej 1:
     55  1.3.14.1      matt 	PIC_TAILCALL(__cerror)
     56       1.2   thorpej END(_getcontext)
     57