sys/ddb/db_variables.h

   1 /*
   2  * Mach Operating System
   3  * Copyright (c) 1991,1990 Carnegie Mellon University
   4  * All Rights Reserved.
   5  *
   6  * Permission to use, copy, modify and distribute this software and its
   7  * documentation is hereby granted, provided that both the copyright
   8  * notice and this permission notice appear in all copies of the
   9  * software, derivative works or modified versions, and any portions
  10  * thereof, and that both notices appear in supporting documentation.
  11  *
  12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
  13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  15  *
  16  * Carnegie Mellon requests users of this software to return to
  17  *
  18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  19  *  School of Computer Science
  20  *  Carnegie Mellon University
  21  *  Pittsburgh PA 15213-3890
  22  *
  23  * any improvements or extensions that they make and grant Carnegie the
  24  * rights to redistribute these changes.
  25  *
  26  * $FreeBSD: src/sys/ddb/db_variables.h,v 1.11 1999/08/28 00:41:11 peter Exp $
  27  * $DragonFly: src/sys/ddb/db_variables.h,v 1.4 2006/05/20 02:42:01 dillon Exp $
  28  */
  29
  30 /*
  31  *      Author: David B. Golub, Carnegie Mellon University
  32  *      Date:   7/90
  33  */
  34
  35 #ifndef _DDB_DB_VARIABLES_H_
  36 #define _DDB_DB_VARIABLES_H_
  37
  38 #ifndef _DDB_DDB_H_
  39 #include <ddb/ddb.h>
  40 #endif
  41
  42 /*
  43  * Debugger variables.
  44  */
  45 struct db_variable;
  46
  47 typedef int     db_varfcn_t (struct db_variable *vp, db_expr_t *valuep, int op);
  48
  49 struct db_variable {
  50         char    *name;          /* Name of variable */
  51         db_expr_t *valuep;      /* value of variable */
  52                                 /* function to call when reading/writing */
  53         db_varfcn_t *fcn;
  54 };
  55
  56 #define DB_VAR_GET      0
  57 #define DB_VAR_SET      1
  58
  59 #define FCN_NULL        ((db_varfcn_t *)0)
  60
  61 #ifdef _KERNEL
  62
  63 extern struct db_variable       db_regs[];      /* machine registers */
  64 extern struct db_variable       *db_eregs;
  65
  66 void    db_read_variable (struct db_variable *, db_expr_t *);
  67
  68 #endif
  69
  70 #endif /* _!DDB_DB_VARIABLES_H_ */