Initial source

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diff --git a/include/mach_init.h b/include/mach_init.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987,1986 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.
+ */
+/*
+ *	Items provided by the Mach environment initialization.
+ */
+
+#ifndef	_MACH_INIT_
+#define	_MACH_INIT_	1
+
+#include <mach/mach_types.h>
+
+/*
+ *	Calls to the Unix emulation to supply privileged ports:
+ *	the privileged host port and the master device port.
+ */
+
+#define mach_host_priv_self()		task_by_pid(-1)
+#define mach_master_device_port()	task_by_pid(-2)
+
+/*
+ *	Kernel-related ports; how a task/thread controls itself
+ */
+
+extern	mach_port_t	mach_task_self_;
+
+#define	mach_task_self() mach_task_self_
+
+#define	current_task()	mach_task_self()
+
+/*
+ *	Other important ports in the Mach user environment
+ */
+
+extern	mach_port_t	name_server_port;
+extern	mach_port_t	environment_port;
+extern	mach_port_t	service_port;
+
+/*
+ *	Where these ports occur in the "mach_ports_register"
+ *	collection... only servers or the runtime library need know.
+ */
+
+#if	MACH_INIT_SLOTS
+#define	NAME_SERVER_SLOT	0
+#define	ENVIRONMENT_SLOT	1
+#define SERVICE_SLOT		2
+
+#define	MACH_PORTS_SLOTS_USED	3
+#endif	MACH_INIT_SLOTS
+
+/*
+ *	Globally interesting numbers.
+ *	These macros assume vm_page_size is a power-of-2.
+ */
+
+extern	vm_size_t	vm_page_size;
+
+#define trunc_page(x)	((x) &~ (vm_page_size - 1))
+#define round_page(x)	trunc_page((x) + (vm_page_size - 1))
+
+#endif	_MACH_INIT_