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db_command.h revision 1.22 
      1 /*	$NetBSD: db_command.h,v 1.22 2002/02/15 07:33:50 simonb 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 /*
     33  * Command loop declarations.
     34  */
     35 struct db_command;
     36 
     37 void	db_skip_to_eol(void);
     38 void	db_command_loop(void);
     39 void	db_error(char *);
     40 
     41 extern db_addr_t db_dot;	/* current location */
     42 extern db_addr_t db_last_addr;	/* last explicit address typed */
     43 extern db_addr_t db_prev;	/* last address examined
     44 				   or written */
     45 extern db_addr_t db_next;	/* next address to be examined
     46 				   or written */
     47 
     48 /*
     49  * Command table
     50  */
     51 struct db_command {
     52 	const char	*name;		/* command name */
     53 	/* function to call */
     54 	void		(*fcn)(db_expr_t, int, db_expr_t, char *);
     55 	int		flag;		/* extra info: */
     56 #define	CS_OWN		0x1		/* non-standard syntax */
     57 #define	CS_MORE		0x2		/* standard syntax, but may have other
     58 					   words at end */
     59 #define	CS_SET_DOT	0x100		/* set dot after command */
     60 	const struct db_command *more;	/* another level of command */
     61 };
     62