/* static	char	*sccsid = "@(#)pcb.h	4.1	(ULTRIX)	7/2/90"; *//************************************************************************ *									* *			Copyright (c) 1984,1986,1989 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.	* *									* ************************************************************************//************************************************************************ * * Modification history: /sys/vax/pcb.h * * 13-Jun-89 -- jmartin *	Add hardware PCB fields defined by ECO 119, PCB_PRVCPU and *	PCB_ASN. * * 18 Jul 85 -- jrs *	Added cpu index to pcb * * 29 Nov 84 -- jrs *	Changed aston(0 and astoff() to only set ast in processor *	register.  The store into the pcb has been eliminated as *	it caused an extraneous context switch. * *	Derived from 4.2bsd labelled: *		pcb.h	6.2	84/07/31 * ************************************************************************//* * VAX process control block */#ifndef	LOCOREstruct pcb{	int	pcb_ksp; 	/* kernel stack pointer */	int	pcb_esp; 	/* exec stack pointer */	int	pcb_ssp; 	/* supervisor stack pointer */	int	pcb_usp; 	/* user stack pointer */	int	pcb_r0; 	int	pcb_r1; 	int	pcb_r2; 	int	pcb_r3; 	int	pcb_r4; 	int	pcb_r5; 	int	pcb_r6; 	int	pcb_r7; 	int	pcb_r8; 	int	pcb_r9; 	int	pcb_r10; 	int	pcb_r11; 	int	pcb_r12; #define	pcb_ap pcb_r12	int	pcb_r13; #define	pcb_fp pcb_r13	int	pcb_pc; 	/* program counter */	int	pcb_psl; 	/* program status longword */	struct  pte *pcb_p0br; 	/* seg 0 base register */	int	pcb_p0lr; 	/* seg 0 length register and astlevel */	struct  pte *pcb_p1br; 	/* seg 1 base register */	int	pcb_p1lr; 	/* seg 1 length register and pme */	unsigned		pcb_prvcpu:8,	/* previous CPU on which process ran */		pcb_asn:24;	/* address space number */			/* * Software pcb (extension) */	int	pcb_szpt; 	/* number of pages of user page table */	int	*pcb_sswap;	int	pcb_sigc[4];	int	pcb_cpundx;	/* index to processor data array */};#define	aston() \	{ \		mtpr(ASTLVL, ASTLVL_USER); \	}#define	astoff() \	{ \		mtpr(ASTLVL, ASTLVL_NONE); \	}#endif /*	LOCORE */#define	AST_NONE	0x04000000	/* ast level */#define	AST_USER	0x03000000	/* ast for user mode */#define	ASTLVL_NONE	4#define	ASTLVL_USER	3#define	AST_CLR		0x07000000#define	PME_CLR		0x80000000#define NO_PRVCPU	255