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+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ * School of Computer Science
+ * Carnegie Mellon University
+ * Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ * Author: David B. Golub, Carnegie Mellon University
+ * Date: 7/90
+ */
+/*
+ * Data access functions for debugger.
+ */
+#include <mach/boolean.h>
+#include <machine/db_machdep.h>
+#include <ddb/db_task_thread.h>
+#include "vm_param.h"
+
+/* implementation dependent access capability */
+#define DB_ACCESS_KERNEL 0 /* only kernel space */
+#define DB_ACCESS_CURRENT 1 /* kernel or current task space */
+#define DB_ACCESS_ANY 2 /* any space */
+
+#ifndef DB_ACCESS_LEVEL
+#define DB_ACCESS_LEVEL DB_ACCESS_KERNEL
+#endif DB_ACCESS_LEVEL
+
+#ifndef DB_VALID_KERN_ADDR
+#define DB_VALID_KERN_ADDR(addr) ((addr) >= VM_MIN_KERNEL_ADDRESS \
+ && (addr) < VM_MAX_KERNEL_ADDRESS)
+#define DB_VALID_ADDRESS(addr,user) ((user != 0) ^ DB_VALID_KERN_ADDR(addr))
+#define DB_PHYS_EQ(task1,addr1,task2,addr2) 0
+#define DB_CHECK_ACCESS(addr,size,task) db_is_current_task(task)
+#endif DB_VALID_KERN_ADDR
+
+extern int db_access_level;
+
+extern db_expr_t db_get_value( db_addr_t addr,
+ int size,
+ boolean_t is_signed );
+
+extern void db_put_value( db_addr_t addr,
+ int size,
+ db_expr_t value );
+
+extern db_expr_t db_get_task_value( db_addr_t addr,
+ int size,
+ boolean_t is_signed,
+ task_t task );
+
+extern void db_put_task_value( db_addr_t addr,
+ int size,
+ db_expr_t value,
+ task_t task );