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