freebsd-dev/sys/ddb/db_variables.h

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/*-
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* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
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*
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* 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.
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*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
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* $FreeBSD$
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*/
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/*
* Author: David B. Golub, Carnegie Mellon University
* Date: 7/90
*/
#ifndef _DDB_DB_VARIABLES_H_
#define _DDB_DB_VARIABLES_H_
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/*
* Debugger variables.
*/
struct db_variable;
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typedef int db_varfcn_t(struct db_variable *vp, db_expr_t *valuep, int op);
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struct db_variable {
char *name; /* Name of variable */
db_expr_t *valuep; /* value of variable */
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/* function to call when reading/writing */
db_varfcn_t *fcn;
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#define DB_VAR_GET 0
#define DB_VAR_SET 1
};
#define FCN_NULL ((db_varfcn_t *)0)
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extern struct db_variable db_regs[]; /* machine registers */
extern struct db_variable *db_eregs;
int db_read_variable(struct db_variable *, db_expr_t *);
int db_write_variable(struct db_variable *, db_expr_t);
#endif /* _!DDB_DB_VARIABLES_H_ */