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Annotation of Net2/ddb/db_variables.h, revision 1.1.1.1

1.1       root        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  [email protected]
                     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: /*
                     27:  * HISTORY
                     28:  * $Log: db_variables.h,v $
                     29:  * Revision 1.1  1992/03/25  21:45:35  pace
                     30:  * Initial revision
                     31:  *
                     32:  * Revision 2.3  91/02/05  17:07:23  mrt
                     33:  *     Changed to new Mach copyright
                     34:  *     [91/01/31  16:19:54  mrt]
                     35:  * 
                     36:  * Revision 2.2  90/08/27  21:53:40  dbg
                     37:  *     Modularized typedef name.  Documented the calling sequence of
                     38:  *     the (optional) access function of a variable.  Now the valuep
                     39:  *     field can be made opaque, eg be an offset that fcn() resolves.
                     40:  *     [90/08/20            af]
                     41:  * 
                     42:  *     Created.
                     43:  *     [90/07/25            dbg]
                     44:  * 
                     45:  */
                     46: /*
                     47:  *     Author: David B. Golub, Carnegie Mellon University
                     48:  *     Date:   7/90
                     49:  */
                     50: 
                     51: #ifndef        _DB_VARIABLES_H_
                     52: #define        _DB_VARIABLES_H_
                     53: 
                     54: /*
                     55:  * Debugger variables.
                     56:  */
                     57: struct db_variable {
                     58:        char    *name;          /* Name of variable */
                     59:        int     *valuep;        /* value of variable */
                     60:                                /* function to call when reading/writing */
                     61:        int     (*fcn)(/* db_variable *vp, db_expr_t *valuep, int op */);
                     62: #define DB_VAR_GET     0
                     63: #define DB_VAR_SET     1
                     64: };
                     65: #define        FCN_NULL        ((int (*)())0)
                     66: 
                     67: extern struct db_variable      db_vars[];      /* debugger variables */
                     68: extern struct db_variable      *db_evars;
                     69: extern struct db_variable      db_regs[];      /* machine registers */
                     70: extern struct db_variable      *db_eregs;
                     71: 
                     72: #endif /* _DB_VARIABLES_H_ */

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