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db_machdep.h revision 1.3 
      1  1.3  gwr /*	$NetBSD: db_machdep.h,v 1.3 1997/02/06 21:16:28 gwr Exp $	*/
      2  1.1  cgd 
      3  1.1  cgd /*
      4  1.1  cgd  * Copyright (c) 1995 Carnegie-Mellon University.
      5  1.1  cgd  * All rights reserved.
      6  1.1  cgd  *
      7  1.1  cgd  * Author: Chris G. Demetriou
      8  1.1  cgd  *
      9  1.1  cgd  * Permission to use, copy, modify and distribute this software and
     10  1.1  cgd  * its documentation is hereby granted, provided that both the copyright
     11  1.1  cgd  * notice and this permission notice appear in all copies of the
     12  1.1  cgd  * software, derivative works or modified versions, and any portions
     13  1.1  cgd  * thereof, and that both notices appear in supporting documentation.
     14  1.1  cgd  *
     15  1.1  cgd  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  1.1  cgd  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  1.1  cgd  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  1.1  cgd  *
     19  1.1  cgd  * Carnegie Mellon requests users of this software to return to
     20  1.1  cgd  *
     21  1.1  cgd  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  1.1  cgd  *  School of Computer Science
     23  1.1  cgd  *  Carnegie Mellon University
     24  1.1  cgd  *  Pittsburgh PA 15213-3890
     25  1.1  cgd  *
     26  1.1  cgd  * any improvements or extensions that they make and grant Carnegie the
     27  1.1  cgd  * rights to redistribute these changes.
     28  1.1  cgd  */
     29  1.1  cgd 
     30  1.1  cgd #ifndef	_ALPHA_DB_MACHDEP_H_
     31  1.1  cgd #define	_ALPHA_DB_MACHDEP_H_
     32  1.1  cgd 
     33  1.1  cgd /*
     34  1.1  cgd  * Machine-dependent defines for new kernel debugger.
     35  1.1  cgd  */
     36  1.1  cgd 
     37  1.1  cgd #include <sys/param.h>
     38  1.1  cgd #include <vm/vm.h>
     39  1.1  cgd #include <machine/frame.h>
     40  1.1  cgd 
     41  1.1  cgd typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
     42  1.1  cgd typedef	long		db_expr_t;	/* expression - signed */
     43  1.1  cgd 
     44  1.1  cgd typedef struct trapframe db_regs_t;
     45  1.1  cgd db_regs_t		ddb_regs;	/* register state */
     46  1.1  cgd #define	DDB_REGS	(&ddb_regs)
     47  1.1  cgd 
     48  1.2  cgd #define	PC_REGS(regs)	((db_addr_t)(regs)->tf_regs[FRAME_PC])
     49  1.1  cgd 
     50  1.1  cgd #define	BKPT_INST	0x00000080	/* breakpoint instruction */
     51  1.1  cgd #define	BKPT_SIZE	(4)		/* size of breakpoint inst */
     52  1.1  cgd #define	BKPT_SET(inst)	(BKPT_INST)
     53  1.1  cgd 
     54  1.3  gwr #define	FIXUP_PC_AFTER_BREAK(regs) \
     55  1.3  gwr 	((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE)
     56  1.1  cgd 
     57  1.1  cgd #endif	/* _ALPHA_DB_MACHDEP_H_ */
     58