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 * $FreeBSD$
31 */
32
33 #ifndef _MACHINE_PROC_H_
34 #define _MACHINE_PROC_H_
35
36 #include <machine/segments.h>
37
38 struct 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 */
49 struct mdthread {
50 int md_spinlock_count; /* (k) */
51 register_t md_saved_flags; /* (k) */
52 register_t md_fault_addr; /* (k) */
53 };
54
55 struct mdproc {
56 struct proc_ldt *md_ldt; /* (j) per-process ldt */
57 };
58
59 #ifdef _KERNEL
60
61 /* Get the current kernel thread stack usage. */
62 #define GET_STACK_USAGE(total, used) do { \
63 struct thread *td = curthread; \
64 (total) = td->td_kstack_pages * PAGE_SIZE; \
65 (used) = (char *)td->td_kstack + \
66 td->td_kstack_pages * PAGE_SIZE - \
67 (char *)&td; \
68 } while (0)
69
70 void set_user_ldt(struct mdproc *);
71 struct proc_ldt *user_ldt_alloc(struct mdproc *, int);
72 void user_ldt_free(struct thread *);
73
74 #endif /* _KERNEL */
75
76 #endif /* !_MACHINE_PROC_H_ */
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