--- Gnu-Mach/ddb/db_access.h	2020/09/02 04:36:57	1.1.1.1
+++ Gnu-Mach/ddb/db_access.h	2020/09/02 04:48:17	1.1.1.4
@@ -1,25 +1,25 @@
-/* 
+/*
  * 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.
  */
@@ -30,10 +30,14 @@
 /*
  * Data access functions for debugger.
  */
+
+#ifndef _DDB_DB_ACCESS_H_
+#define _DDB_DB_ACCESS_H_
+
 #include <mach/boolean.h>
 #include <machine/db_machdep.h>
 #include <ddb/db_task_thread.h>
-#include "vm_param.h"
+#include <machine/vm_param.h>
 
 /* implementation dependent access capability */
 #define	DB_ACCESS_KERNEL	0	/* only kernel space */
@@ -42,7 +46,7 @@
 
 #ifndef	DB_ACCESS_LEVEL
 #define DB_ACCESS_LEVEL		DB_ACCESS_KERNEL
-#endif	DB_ACCESS_LEVEL
+#endif	/* DB_ACCESS_LEVEL */
 
 #ifndef DB_VALID_KERN_ADDR
 #define DB_VALID_KERN_ADDR(addr)	((addr) >= VM_MIN_KERNEL_ADDRESS \
@@ -50,7 +54,7 @@
 #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
+#endif	/* DB_VALID_KERN_ADDR */
 
 extern int db_access_level;
 
@@ -71,3 +75,5 @@ extern void	 db_put_task_value(	db_addr_
 					int size,
 					db_expr_t value,
 					task_t task );
+
+#endif /* _DDB_DB_ACCESS_H_ */