proc.h revision 299788 
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 299788 2016-05-14 23:35:11Z kib $
31 */
32
33#ifndef _MACHINE_PROC_H_
34#define	_MACHINE_PROC_H_
35
36#include <sys/queue.h>
37#include <machine/segments.h>
38
39/*
40 * List of locks
41 *	k - only accessed by curthread
42 *	pp - pmap.c:invl_gen_mtx
43 */
44
45struct proc_ldt {
46	caddr_t ldt_base;
47	int     ldt_refcnt;
48};
49
50struct pmap_invl_gen {
51	u_long gen;			/* (k) */
52	LIST_ENTRY(pmap_invl_gen) link;	/* (pp) */
53};
54
55/*
56 * Machine-dependent part of the proc structure for AMD64.
57 */
58struct mdthread {
59	int	md_spinlock_count;	/* (k) */
60	register_t md_saved_flags;	/* (k) */
61	register_t md_spurflt_addr;	/* (k) Spurious page fault address. */
62	struct pmap_invl_gen md_invl_gen;
63};
64
65struct mdproc {
66	struct proc_ldt *md_ldt;	/* (t) per-process ldt */
67	struct system_segment_descriptor md_ldt_sd;
68};
69
70#define	KINFO_PROC_SIZE 1088
71#define	KINFO_PROC32_SIZE 768
72
73#ifdef	_KERNEL
74
75/* Get the current kernel thread stack usage. */
76#define GET_STACK_USAGE(total, used) do {				\
77	struct thread	*td = curthread;				\
78	(total) = td->td_kstack_pages * PAGE_SIZE;			\
79	(used) = (char *)td->td_kstack +				\
80	    td->td_kstack_pages * PAGE_SIZE -				\
81	    (char *)&td;						\
82} while (0)
83
84void set_user_ldt(struct mdproc *);
85struct proc_ldt *user_ldt_alloc(struct proc *, int);
86void user_ldt_free(struct thread *);
87void user_ldt_deref(struct proc_ldt *);
88struct sysarch_args;
89int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
90int amd64_set_ldt_data(struct thread *td, int start, int num,
91    struct user_segment_descriptor *descs);
92
93extern struct mtx dt_lock;
94extern int max_ldt_segment;
95
96struct syscall_args {
97	u_int code;
98	struct sysent *callp;
99	register_t args[8];
100	int narg;
101};
102#endif  /* _KERNEL */
103
104#endif /* !_MACHINE_PROC_H_ */
105