machine.h

<B>Digital的Unix操作系统VAX 4.2源码</B>

/* 	@(#)machine.h	6.2	(ULTRIX)	9/28/88 	*/

/************************************************************************
 *									*
 *			Copyright (c) 1988 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/
/*	machine.h	4.1	81/05/14	*/
/*
 *	Modification History
 *
 * 28 Sep 88 -- jmartin
 *	Change definition of MAXSTOR so that it will track the kernel's
 *	notion of the top of the user stack.
 */

#include <sys/vm.h>

#define	PAGSIZ		(NBPG*CLSIZE)

#define DBNAME "adb\n"
#define LPRMODE "%R"
#define OFFMODE "+%R"
#define	TXTRNDSIZ	PAGSIZ

#define	MAXINT	0x7fffffff
#define	MAXSTOR USRSTACK
#define	MAXFILE 0xffffffff

/*
 * INSTACK tells whether its argument is a stack address.
 * INUDOT tells whether its argument is in the (extended) u. area.
 * These are used for consistency checking and dont have to be exact.
 *
 * INKERNEL tells whether its argument is a kernel space address.
 * KVTOPH trims a kernel virtal address back to its offset
 * in the kernel address space.
 */
#define	INSTACK(x)	(((x)&0xf0000000) == 0x70000000)
#define	INUDOT(x)	(((x)&0xf0000000) == 0x70000000)
#define	INKERNEL(x)	(((x)&0xf0000000) == 0x80000000)

#define	KVTOPH(x)	((x)&~ 0x80000000)
#define	KERNOFF		0x80000000