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db_machdep.h revision 1.2.2.1 
      1  1.2.2.1  cgd /* $NetBSD: db_machdep.h,v 1.2.2.1 1997/06/01 04:12:11 cgd 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  1.2.2.1  cgd #define	FIXUP_PC_AFTER_BREAK(regs) \
     55  1.2.2.1  cgd 	((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE)
     56      1.1  cgd 
     57      1.1  cgd #endif	/* _ALPHA_DB_MACHDEP_H_ */
     58