The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_variables.h

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    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: releng/11.0/sys/ddb/db_variables.h 272958 2014-10-11 20:25:19Z pfg $
   27  */
   28 
   29 /*
   30  *      Author: David B. Golub, Carnegie Mellon University
   31  *      Date:   7/90
   32  */
   33 
   34 #ifndef _DDB_DB_VARIABLES_H_
   35 #define _DDB_DB_VARIABLES_H_
   36 
   37 /*
   38  * Debugger variables.
   39  */
   40 struct db_variable;
   41 typedef int     db_varfcn_t(struct db_variable *vp, db_expr_t *valuep, int op);
   42 struct db_variable {
   43         char    *name;          /* Name of variable */
   44         db_expr_t *valuep;      /* value of variable */
   45                                 /* function to call when reading/writing */
   46         db_varfcn_t *fcn;
   47 #define DB_VAR_GET      0
   48 #define DB_VAR_SET      1
   49 };
   50 #define FCN_NULL        ((db_varfcn_t *)0)
   51 
   52 extern struct db_variable       db_regs[];      /* machine registers */
   53 extern struct db_variable       *db_eregs;
   54 
   55 extern db_varfcn_t      db_var_curcpu;          /* DPCPU default CPU */
   56 extern db_varfcn_t      db_var_curvnet;         /* Default vnet */
   57 extern db_varfcn_t      db_var_db_cpu;          /* DPCPU active CPU */
   58 extern db_varfcn_t      db_var_db_vnet;         /* Active vnet */
   59 
   60 int db_read_variable(struct db_variable *, db_expr_t *);
   61 int db_write_variable(struct db_variable *, db_expr_t);
   62 
   63 #endif /* _!DDB_DB_VARIABLES_H_ */

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