proc.h revision 1.20 
1/*	$NetBSD: proc.h,v 1.20 2003/06/23 12:56:07 martin 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#ifndef _I386_PROC_H_
39#define _I386_PROC_H_
40
41#ifdef _KERNEL_OPT
42#include "opt_noredzone.h"
43#endif
44
45#include <machine/frame.h>
46
47/*
48 * Machine-dependent part of the proc structure for i386.
49 */
50struct mdlwp {
51	struct	trapframe *md_regs;	/* registers on current frame */
52	int	md_flags;		/* machine-dependent flags */
53	int	md_tss_sel;		/* TSS selector */
54};
55
56/* md_flags */
57#define	MDP_USEDFPU	0x0001	/* has used the FPU */
58
59struct mdproc {
60					/* Syscall handling function */
61	int	md_flags;
62	void	(*md_syscall) __P((struct trapframe));
63	__volatile int md_astpending;	/* AST pending for this process */
64};
65
66#endif /* _I386_PROC_H_ */
67
68/* md_flags */
69#define	MDP_USEDFPU	0x0001	/* has used the FPU */
70#define MDP_USEDMTRR	0x0002	/* has set volatile MTRRs */
71
72/* kernel stack params */
73#ifndef NOREDZONE
74/* override default for redzone */
75#define	KSTACK_LOWEST_ADDR(l)	\
76	((caddr_t)(l)->l_addr + PAGE_SIZE*2)
77#define	KSTACK_SIZE	\
78	(USPACE - PAGE_SIZE*2)
79#endif
80