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      1 /*	$NetBSD: db_break.h,v 1.20 2007/02/22 04:38:04 matt Exp $	*/
      2 
      3 /*
      4  * Mach Operating System
      5  * Copyright (c) 1991,1990 Carnegie Mellon University
      6  * All Rights Reserved.
      7  *
      8  * Permission to use, copy, modify and distribute this software and its
      9  * documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     16  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie the
     26  * rights to redistribute these changes.
     27  *
     28  *	Author: David B. Golub, Carnegie Mellon University
     29  *	Date:	7/90
     30  */
     31 
     32 #ifndef	_DDB_DB_BREAK_H_
     33 #define	_DDB_DB_BREAK_H_
     34 
     35 #include <uvm/uvm_extern.h>
     36 
     37 /*
     38  * Breakpoints.
     39  */
     40 typedef struct db_breakpoint {
     41 	struct vm_map *map;			/* in this map */
     42 	db_addr_t address;		/* set here */
     43 	int	init_count;		/* number of times to skip bkpt */
     44 	int	count;			/* current count */
     45 	int	flags;			/* flags: */
     46 #define	BKPT_SINGLE_STEP	0x2	    /* to simulate single step */
     47 #define	BKPT_TEMP		0x4	    /* temporary */
     48 	db_expr_t bkpt_inst;		/* saved instruction at bkpt */
     49 	struct db_breakpoint *link;	/* link in in-use or free chain */
     50 } *db_breakpoint_t;
     51 
     52 db_breakpoint_t	db_find_breakpoint_here(db_addr_t);
     53 void		db_set_breakpoints(void);
     54 void		db_clear_breakpoints(void);
     55 void		db_delete_cmd(db_expr_t, bool, db_expr_t, const char *);
     56 void		db_breakpoint_cmd(db_expr_t, bool, db_expr_t, const char *);
     57 void		db_listbreak_cmd(db_expr_t, bool, db_expr_t, const char *);
     58 bool		db_map_equal(struct vm_map *, struct vm_map *);
     59 bool		db_map_current(struct vm_map *);
     60 struct vm_map  *db_map_addr(vaddr_t);
     61 
     62 #endif	/* _DDB_DB_BREAK_H_ */
     63