proc.h revision 1.16 
1/*	$NetBSD: proc.h,v 1.16 2002/10/12 14:30:08 yamt Exp $	*/
2
3/*
4 * Copyright (c) 1991 Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	@(#)proc.h	7.1 (Berkeley) 5/15/91
36 */
37
38#include <machine/frame.h>
39
40/*
41 * Machine-dependent part of the proc structure for i386.
42 */
43struct mdproc {
44	struct	trapframe *md_regs;	/* registers on current frame */
45	int	md_flags;		/* machine-dependent flags */
46	int	md_tss_sel;		/* TSS selector */
47					/* Syscall handling function */
48	void	(*md_syscall) __P((struct trapframe));
49};
50
51/* md_flags */
52#define	MDP_USEDFPU	0x0001	/* has used the FPU */
53#define MDP_USEDMTRR	0x0002	/* has set volatile MTRRs */
54
55/* kernel stack params */
56#ifndef NOREDZONE
57/* override default for redzone */
58#define	KSTACK_LOWEST_ADDR(p)	\
59	((caddr_t)(p)->p_addr + NBPG*2)
60#define	KSTACK_SIZE	\
61	(USPACE - NBPG*2)
62#endif
63