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diff --git a/i386/include/mach/i386/vm_types.h b/i386/include/mach/i386/vm_types.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1992,1991,1990,1989,1988 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.
+ */
+/*
+ *	File:	vm_types.h
+ *	Author:	Avadis Tevanian, Jr.
+ *	Date: 1985
+ *
+ *	Header file for VM data types.  I386 version.
+ */
+
+#ifndef	_MACHINE_VM_TYPES_H_
+#define _MACHINE_VM_TYPES_H_	1
+
+#ifdef	ASSEMBLER
+#else	ASSEMBLER
+
+/*
+ * A natural_t is the type for the native
+ * integer type, e.g. 32 or 64 or.. whatever
+ * register size the machine has.  Unsigned, it is
+ * used for entities that might be either
+ * unsigned integers or pointers, and for
+ * type-casting between the two.
+ * For instance, the IPC system represents
+ * a port in user space as an integer and
+ * in kernel space as a pointer.
+ */
+typedef unsigned int	natural_t;
+
+/*
+ * An integer_t is the signed counterpart
+ * of the natural_t type. Both types are
+ * only supposed to be used to define
+ * other types in a machine-independent
+ * way.
+ */
+typedef int		integer_t;
+
+#ifndef _POSIX_SOURCE
+
+/*
+ * An int32 is an integer that is at least 32 bits wide
+ */
+typedef int		int32;
+typedef unsigned int	uint32;
+
+#endif /* _POSIX_SOURCE */
+
+/*
+ * A vm_offset_t is a type-neutral pointer,
+ * e.g. an offset into a virtual memory space.
+ */
+typedef	natural_t	vm_offset_t;
+
+/*
+ * A vm_size_t is the proper type for e.g.
+ * expressing the difference between two
+ * vm_offset_t entities.
+ */
+typedef	natural_t	vm_size_t;
+
+/*
+ * These types are _exactly_ as wide as indicated in their names.
+ */
+typedef signed char		signed8_t;
+typedef signed short		signed16_t;
+typedef signed long		signed32_t;
+typedef signed long long	signed64_t;
+typedef unsigned char		unsigned8_t;
+typedef unsigned short		unsigned16_t;
+typedef unsigned long		unsigned32_t;
+typedef unsigned long long	unsigned64_t;
+typedef float			float32_t;
+typedef double			float64_t;
+
+#endif	/* ASSEMBLER */
+
+/*
+ * If composing messages by hand (please dont)
+ */
+
+#define	MACH_MSG_TYPE_INTEGER_T	MACH_MSG_TYPE_INTEGER_32
+
+#endif	/* _MACHINE_VM_TYPES_H_ */
+