proc.h revision 1.32 
1/*	$NetBSD: proc.h,v 1.32 2007/11/10 20:06:24 ad 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. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)proc.h	7.1 (Berkeley) 5/15/91
32 */
33
34#ifndef _I386_PROC_H_
35#define _I386_PROC_H_
36
37#ifdef _KERNEL_OPT
38#include "opt_noredzone.h"
39#endif
40
41#include <sys/user.h> /* for sizeof(struct user) */
42#include <machine/frame.h>
43
44/*
45 * Machine-dependent part of the proc structure for i386.
46 */
47struct mdlwp {
48	struct	trapframe *md_regs;	/* registers on current frame */
49	int	md_flags;		/* machine-dependent flags */
50	int	md_tss_sel;		/* TSS selector */
51	volatile int md_astpending;	/* AST pending for this process */
52	int	md_fsd[2];		/* %fs descriptor */
53	int	md_gsd[2];		/* %gs descriptor */
54};
55
56/* md_flags */
57#define	MDL_USEDFPU	0x0001	/* has used the FPU */
58
59struct mdproc {
60	int	md_flags;
61	void	(*md_syscall)(struct trapframe *);
62					/* Syscall handling function */
63};
64
65/* md_flags */
66#define MDP_USEDMTRR	0x0002	/* has set volatile MTRRs */
67
68/* kernel stack params */
69#define	UAREA_USER_OFFSET	(USPACE - ALIGN(sizeof(struct user)))
70#define	KSTACK_LOWEST_ADDR(l)	((void *)USER_TO_UAREA((l)->l_addr))
71#define	KSTACK_SIZE		UAREA_USER_OFFSET
72
73#endif /* _I386_PROC_H_ */
74