xref: /freebsd/sys/amd64/include/proc.h (revision 730cecb05aaf016ac52ef7cfc691ccec3a0408cd)
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_refcnt;
41 };
42 
43 /*
44  * Machine-dependent part of the proc structure for AMD64.
45  */
46 struct 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 
52 struct 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 
71 void set_user_ldt(struct mdproc *);
72 struct proc_ldt *user_ldt_alloc(struct proc *, int);
73 void user_ldt_free(struct thread *);
74 void user_ldt_deref(struct proc_ldt *);
75 struct sysarch_args;
76 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
77 int amd64_set_ldt_data(struct thread *td, int start, int num,
78     struct user_segment_descriptor *descs);
79 
80 extern struct mtx dt_lock;
81 extern int max_ldt_segment;
82 
83 struct 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