proc.h revision 331722 
1/*-
2 * Copyright (c) 1991 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	from: @(#)proc.h	7.1 (Berkeley) 5/15/91
30 * $FreeBSD: stable/11/sys/i386/include/proc.h 331722 2018-03-29 02:50:57Z eadler $
31 */
32
33#ifndef _MACHINE_PROC_H_
34#define	_MACHINE_PROC_H_
35
36#include <machine/segments.h>
37
38struct proc_ldt {
39        caddr_t ldt_base;
40        int     ldt_len;
41        int     ldt_refcnt;
42        u_long  ldt_active;
43        struct  segment_descriptor ldt_sd;
44};
45
46/*
47 * Machine-dependent part of the proc structure for i386.
48 * Table of MD locks:
49 *       t - Descriptor tables lock
50 */
51struct mdthread {
52	int	md_spinlock_count;	/* (k) */
53	register_t md_saved_flags;	/* (k) */
54	register_t md_spurflt_addr;	/* (k) Spurious page fault address. */
55};
56
57struct mdproc {
58	struct proc_ldt *md_ldt;	/* (t) per-process ldt */
59};
60
61#define	KINFO_PROC_SIZE 768
62
63struct syscall_args {
64	u_int code;
65	struct sysent *callp;
66	register_t args[8];
67	int narg;
68};
69
70#ifdef	_KERNEL
71
72/* Get the current kernel thread stack usage. */
73#define GET_STACK_USAGE(total, used) do {				\
74	struct thread	*td = curthread;				\
75	(total) = td->td_kstack_pages * PAGE_SIZE;			\
76	(used) = (char *)td->td_kstack +				\
77	    td->td_kstack_pages * PAGE_SIZE -				\
78	    (char *)&td;						\
79} while (0)
80
81void 	set_user_ldt(struct mdproc *);
82struct 	proc_ldt *user_ldt_alloc(struct mdproc *, int);
83void 	user_ldt_free(struct thread *);
84void	user_ldt_deref(struct proc_ldt *pldt);
85
86extern struct mtx dt_lock;
87#endif	/* _KERNEL */
88
89#endif /* !_MACHINE_PROC_H_ */
90