pcb.h revision 26494 
1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	from: @(#)pcb.h	5.10 (Berkeley) 5/12/91
37 *	$Id: pcb.h,v 1.21 1997/05/07 19:49:32 peter Exp $
38 */
39
40#ifndef _I386_PCB_H_
41#define _I386_PCB_H_
42
43/*
44 * Intel 386 process control block
45 */
46#include <machine/tss.h>
47#include <machine/npx.h>
48#if defined(KERNEL) && defined(SMP)
49#include <machine/smp.h>	/* cpunumber() */
50#endif
51
52struct pcb {
53	int	pcb_cr3;
54	int	pcb_edi;
55	int	pcb_esi;
56	int	pcb_ebp;
57	int	pcb_esp;
58	int	pcb_ebx;
59	int	pcb_eip;
60	caddr_t	pcb_ldt;		/* per process (user) LDT */
61	int	pcb_ldt_len;		/* number of LDT entries */
62	struct	save87	pcb_savefpu;	/* floating point state for 287/387 */
63	u_char	pcb_flags;
64#define	FP_SOFTFP	0x01	/* process using software fltng pnt emulator */
65	caddr_t	pcb_onfault;	/* copyin/out fault recovery */
66	u_long	pcb_mpnest;
67	int	pcb_fs;
68	int	pcb_gs;
69	u_long	__pcb_spare[5];	/* adjust to avoid core dump size changes */
70#if 0	/* some day we may switch between procs that have their own i386tss */
71	struct	i386tss pcb_tss;
72	u_char	pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
73#endif
74};
75
76/*
77 * The pcb is augmented with machine-dependent additional data for
78 * core dumps. For the i386: ???
79 */
80struct md_coredump {
81};
82
83#ifdef KERNEL
84
85#ifdef SMP
86extern struct pcb *SMPcurpcb[];		/* our current running pcb */
87#define curpcb (SMPcurpcb[cpunumber()])
88#else /* !SMP */
89extern struct pcb *curpcb;		/* our current running pcb */
90#endif /* SMP */
91
92void	savectx __P((struct pcb*));
93#endif
94
95#endif /* _I386_PCB_H_ */
96