Annotation of Gnu-Mach/ddb/db_variables.h, revision 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 "AS IS"
        !            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 Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     Author: David B. Golub, Carnegie Mellon University
        !            28:  *     Date:   7/90
        !            29:  */
        !            30: 
        !            31: #ifndef        _DB_VARIABLES_H_
        !            32: #define        _DB_VARIABLES_H_
        !            33: 
        !            34: #include <kern/thread.h>
        !            35: 
        !            36: /*
        !            37:  * Debugger variables.
        !            38:  */
        !            39: struct db_variable {
        !            40:        char    *name;          /* Name of variable */
        !            41:        db_expr_t *valuep;      /* pointer to value of variable */
        !            42:                                /* function to call when reading/writing */
        !            43:        int     (*fcn)(/* db_variable, db_expr_t, int, db_var_aux_param_t */);
        !            44:        short   min_level;      /* number of minimum suffix levels */
        !            45:        short   max_level;      /* number of maximum suffix levels */
        !            46:        short   low;            /* low value of level 1 suffix */
        !            47:        short   high;           /* high value of level 1 suffix */
        !            48: #define DB_VAR_GET     0
        !            49: #define DB_VAR_SET     1
        !            50: };
        !            51: #define        FCN_NULL        ((int (*)())0)
        !            52: 
        !            53: #define DB_VAR_LEVEL   3       /* maximum number of suffix level */
        !            54: 
        !            55: #define db_read_variable(vp, valuep)   \
        !            56:        db_read_write_variable(vp, valuep, DB_VAR_GET, 0)
        !            57: #define db_write_variable(vp, valuep)  \
        !            58:        db_read_write_variable(vp, valuep, DB_VAR_SET, 0)
        !            59: 
        !            60: /*
        !            61:  * auxiliary parameters passed to a variable handler
        !            62:  */
        !            63: struct db_var_aux_param {
        !            64:        char            *modif;                 /* option strings */
        !            65:        short           level;                  /* number of levels */
        !            66:        short           suffix[DB_VAR_LEVEL];   /* suffix */
        !            67:        thread_t        thread;                 /* target task */
        !            68: };
        !            69: 
        !            70: typedef struct db_var_aux_param        *db_var_aux_param_t;
        !            71:        
        !            72: 
        !            73: extern struct db_variable      db_vars[];      /* debugger variables */
        !            74: extern struct db_variable      *db_evars;
        !            75: extern struct db_variable      db_regs[];      /* machine registers */
        !            76: extern struct db_variable      *db_eregs;
        !            77: 
        !            78: #endif /* _DB_VARIABLES_H_ */

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