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/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Author: David B. Golub, Carnegie Mellon University
* Date: 7/90
*/
#ifndef _DB_VARIABLES_H_
#define _DB_VARIABLES_H_
#include <kern/thread.h>
/*
* Debugger variables.
*/
struct db_var_aux_param; /* forward */
typedef struct db_var_aux_param *db_var_aux_param_t; /* forward */
struct db_variable {
char *name; /* Name of variable */
db_expr_t *valuep; /* pointer to value of variable */
/* function to call when reading/writing */
long (*fcn)(struct db_variable *, db_expr_t *, int, db_var_aux_param_t);
short min_level; /* number of minimum suffix levels */
short max_level; /* number of maximum suffix levels */
short low; /* low value of level 1 suffix */
short high; /* high value of level 1 suffix */
#define DB_VAR_GET 0
#define DB_VAR_SET 1
};
#define FCN_NULL ((long (*)())0)
#define DB_VAR_LEVEL 3 /* maximum number of suffix level */
#define db_read_variable(vp, valuep) \
db_read_write_variable(vp, valuep, DB_VAR_GET, 0)
#define db_write_variable(vp, valuep) \
db_read_write_variable(vp, valuep, DB_VAR_SET, 0)
/*
* auxiliary parameters passed to a variable handler
*/
struct db_var_aux_param {
char *modif; /* option strings */
short level; /* number of levels */
short suffix[DB_VAR_LEVEL]; /* suffix */
thread_t thread; /* target task */
};
/* Already defined above. */
/* typedef struct db_var_aux_param *db_var_aux_param_t; */
extern struct db_variable db_vars[]; /* debugger variables */
extern struct db_variable *db_evars;
extern struct db_variable db_regs[]; /* machine registers */
extern struct db_variable *db_eregs;
extern int db_get_variable(db_expr_t *valuep);
void db_set_cmd();
void db_read_write_variable(struct db_variable *, db_expr_t *, int, struct db_var_aux_param *);
#endif /* _DB_VARIABLES_H_ */
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