1/*-
 2 * SPDX-License-Identifier: BSD-3-Clause
 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 *	from: @(#)proc.h	7.1 (Berkeley) 5/15/91
32 */
33
34#ifndef _MACHINE_PROC_H_
35#define	_MACHINE_PROC_H_
36
37#include <machine/segments.h>
38
39struct proc_ldt {
40        caddr_t ldt_base;
41        int     ldt_len;
42        int     ldt_refcnt;
43        u_long  ldt_active;
44        struct  segment_descriptor ldt_sd;
45};
46
47/*
48 * Machine-dependent part of the proc structure for i386.
49 * Table of MD locks:
50 *       t - Descriptor tables lock
51 */
52struct mdthread {
53	int	md_spinlock_count;	/* (k) */
54	register_t md_saved_flags;	/* (k) */
55	register_t md_spurflt_addr;	/* (k) Spurious page fault address. */
56};
57
58struct mdproc {
59	struct proc_ldt *md_ldt;	/* (t) per-process ldt */
60};
61
62#define	KINFO_PROC_SIZE 768
63
64#ifdef	_KERNEL
65
66#include <machine/md_var.h>
67
68void 	set_user_ldt(struct mdproc *);
69struct 	proc_ldt *user_ldt_alloc(struct mdproc *, int);
70void 	user_ldt_free(struct thread *);
71void	user_ldt_deref(struct proc_ldt *pldt);
72
73extern struct mtx dt_lock;
74#endif	/* _KERNEL */
75
76#endif /* !_MACHINE_PROC_H_ */