proc.h revision 233291 
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: head/sys/amd64/include/proc.h 233291 2012-03-22 04:52:51Z alc $
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_refcnt;
41};
42
43/*
44 * Machine-dependent part of the proc structure for AMD64.
45 */
46struct mdthread {
47	int	md_spinlock_count;	/* (k) */
48	register_t md_saved_flags;	/* (k) */
49	register_t md_spurflt_addr;	/* (k) Spurious page fault address. */
50};
51
52struct mdproc {
53	struct proc_ldt *md_ldt;	/* (t) per-process ldt */
54	struct system_segment_descriptor md_ldt_sd;
55};
56
57#define	KINFO_PROC_SIZE 1088
58#define	KINFO_PROC32_SIZE 768
59
60#ifdef	_KERNEL
61
62/* Get the current kernel thread stack usage. */
63#define GET_STACK_USAGE(total, used) do {				\
64	struct thread	*td = curthread;				\
65	(total) = td->td_kstack_pages * PAGE_SIZE;			\
66	(used) = (char *)td->td_kstack +				\
67	    td->td_kstack_pages * PAGE_SIZE -				\
68	    (char *)&td;						\
69} while (0)
70
71void set_user_ldt(struct mdproc *);
72struct proc_ldt *user_ldt_alloc(struct proc *, int);
73void user_ldt_free(struct thread *);
74void user_ldt_deref(struct proc_ldt *);
75struct sysarch_args;
76int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
77int amd64_set_ldt_data(struct thread *td, int start, int num,
78    struct user_segment_descriptor *descs);
79
80extern struct mtx dt_lock;
81extern int max_ldt_segment;
82
83struct syscall_args {
84	u_int code;
85	struct sysent *callp;
86	register_t args[8];
87	int narg;
88};
89#endif  /* _KERNEL */
90
91#endif /* !_MACHINE_PROC_H_ */
92