pcb.h revision 48691 
1214501Srpaulo/*-
2214501Srpaulo * Copyright (c) 1990 The Regents of the University of California.
3214501Srpaulo * All rights reserved.
4214501Srpaulo *
5214501Srpaulo * This code is derived from software contributed to Berkeley by
6214501Srpaulo * William Jolitz.
7214501Srpaulo *
8214501Srpaulo * Redistribution and use in source and binary forms, with or without
9214501Srpaulo * modification, are permitted provided that the following conditions
10214501Srpaulo * are met:
11214501Srpaulo * 1. Redistributions of source code must retain the above copyright
12214501Srpaulo *    notice, this list of conditions and the following disclaimer.
13214501Srpaulo * 2. Redistributions in binary form must reproduce the above copyright
14214501Srpaulo *    notice, this list of conditions and the following disclaimer in the
15214501Srpaulo *    documentation and/or other materials provided with the distribution.
16214501Srpaulo * 3. All advertising materials mentioning features or use of this software
17214501Srpaulo *    must display the following acknowledgement:
18214501Srpaulo *	This product includes software developed by the University of
19214501Srpaulo *	California, Berkeley and its contributors.
20214501Srpaulo * 4. Neither the name of the University nor the names of its contributors
21214501Srpaulo *    may be used to endorse or promote products derived from this software
22214501Srpaulo *    without specific prior written permission.
23214501Srpaulo *
24214501Srpaulo * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25214501Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26214501Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27214501Srpaulo * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28214501Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29214501Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30214501Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31214501Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32214501Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33214501Srpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34214501Srpaulo * SUCH DAMAGE.
35214501Srpaulo *
36214501Srpaulo *	from: @(#)pcb.h	5.10 (Berkeley) 5/12/91
37214501Srpaulo *	$Id: pcb.h,v 1.28 1999/06/01 18:20:06 jlemon Exp $
38214501Srpaulo */
39214501Srpaulo
40214501Srpaulo#ifndef _I386_PCB_H_
41#define _I386_PCB_H_
42
43/*
44 * Intel 386 process control block
45 */
46#include <machine/globals.h>
47#include <machine/npx.h>
48
49struct pcb {
50	int	pcb_cr3;
51	int	pcb_edi;
52	int	pcb_esi;
53	int	pcb_ebp;
54	int	pcb_esp;
55	int	pcb_ebx;
56	int	pcb_eip;
57
58	int     pcb_dr0;
59	int     pcb_dr1;
60	int     pcb_dr2;
61	int     pcb_dr3;
62	int     pcb_dr6;
63	int     pcb_dr7;
64
65	caddr_t	pcb_ldt;		/* per process (user) LDT */
66	int	pcb_ldt_len;		/* number of LDT entries */
67	struct	save87	pcb_savefpu;	/* floating point state for 287/387 */
68	u_char	pcb_flags;
69#define	FP_SOFTFP	0x01	/* process using software fltng pnt emulator */
70#define	PCB_DBREGS	0x02	/* process using debug registers */
71	caddr_t	pcb_onfault;	/* copyin/out fault recovery */
72#ifdef SMP
73	u_long	pcb_mpnest;
74#else
75	u_long	pcb_mpnest_dontuse;
76#endif
77	int	pcb_gs;
78	struct	pcb_ext	*pcb_ext;	/* optional pcb extension */
79	u_long	__pcb_spare[2];	/* adjust to avoid core dump size changes */
80};
81
82/*
83 * The pcb is augmented with machine-dependent additional data for
84 * core dumps. For the i386: ???
85 */
86struct md_coredump {
87};
88
89#ifdef KERNEL
90
91#ifndef curpcb
92extern struct pcb *curpcb;		/* our current running pcb */
93#endif
94
95void	savectx __P((struct pcb *));
96#endif
97
98#endif /* _I386_PCB_H_ */
99