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diff --git a/include/mach/thread_status.h b/include/mach/thread_status.h
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+/*
+ * Mach Operating System
+ * Copyright (c) 1993-1988 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.
+ */
+/*
+ *
+ *	This file contains the structure definitions for the user-visible
+ *	thread state.  This thread state is examined with the thread_get_state
+ *	kernel call and may be changed with the thread_set_state kernel call.
+ *
+ */
+
+#ifndef	_MACH_THREAD_STATUS_H_
+#define	_MACH_THREAD_STATUS_H_
+
+/*
+ *	The actual structure that comprises the thread state is defined
+ *	in the machine dependent module.
+ */
+#include <mach/machine/vm_types.h>
+#include <mach/machine/thread_status.h>
+
+/*
+ *	Generic definition for machine-dependent thread status.
+ */
+
+typedef natural_t		*thread_state_t;	/* Variable-length array */
+
+#define	THREAD_STATE_MAX	(1024)		/* Maximum array size */
+typedef natural_t	thread_state_data_t[THREAD_STATE_MAX];
+
+#define	THREAD_STATE_FLAVOR_LIST	0	/* List of valid flavors */
+
+#endif	/* _MACH_THREAD_STATUS_H_ */