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mcontext.h revision 1.3 
      1 /*	$NetBSD: mcontext.h,v 1.3 2003/10/08 22:43:01 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Klaus Klein.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _VAX_MCONTEXT_H_
     40 #define _VAX_MCONTEXT_H_
     41 
     42 /*
     43  * Layout of mcontext_t.
     44  * As on Alpha, this maps directly to `struct reg'.
     45  */
     46 
     47 #define	_NGREG	17		/* R0-31, AP, SP, FP, PC, PSL */
     48 
     49 typedef	int		__greg_t;
     50 typedef	__greg_t	__gregset_t[_NGREG];
     51 
     52 #define	_REG_R0		0
     53 #define	_REG_R1		1
     54 #define	_REG_R2		2
     55 #define	_REG_R3		3
     56 #define	_REG_R4		4
     57 #define	_REG_R5		5
     58 #define	_REG_R6		6
     59 #define	_REG_R7		7
     60 #define	_REG_R8		8
     61 #define	_REG_R9		9
     62 #define	_REG_R10	10
     63 #define	_REG_R11	11
     64 #define	_REG_AP		12
     65 #define	_REG_FP		13
     66 #define	_REG_SP		14
     67 #define	_REG_PC		15
     68 #define	_REG_PSL	16
     69 
     70 typedef struct {
     71 	__gregset_t	__gregs;	/* General Purpose Register set */
     72 } mcontext_t;
     73 
     74 #define	_UC_MACHINE_SP(uc)	((uc)->uc_mcontext.__gregs[_REG_SP])
     75 #define	_UC_MACHINE_PC(uc)	((uc)->uc_mcontext.__gregs[_REG_PC])
     76 #define	_UC_MACHINE_INTRV(uc)	((uc)->uc_mcontext.__gregs[_REG_R0])
     77 
     78 #define	_UC_MACHINE_SET_PC(uc, pc)	_UC_MACHINE_PC(uc) = (pc)
     79 
     80 #endif	/* !_VAX_MCONTEXT_H_ */
     81