pcb.h revision 22975 
1138447Srwatson/*-
2138447Srwatson * Copyright (c) 1990 The Regents of the University of California.
3281593Sngie * All rights reserved.
4138447Srwatson *
5282074Sngie * This code is derived from software contributed to Berkeley by
6282074Sngie * William Jolitz.
7281593Sngie *
8138447Srwatson * Redistribution and use in source and binary forms, with or without
9281593Sngie * modification, are permitted provided that the following conditions
10281593Sngie * are met:
11281593Sngie * 1. Redistributions of source code must retain the above copyright
12280893Sngie *    notice, this list of conditions and the following disclaimer.
13280893Sngie * 2. Redistributions in binary form must reproduce the above copyright
14281593Sngie *    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 *	$Id$
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
49struct pcb {
50	struct	i386tss pcb_tss;
51#define	pcb_ksp	pcb_tss.tss_esp0
52#define	pcb_ptd	pcb_tss.tss_cr3
53#define	pcb_cr3	pcb_ptd
54#define	pcb_pc	pcb_tss.tss_eip
55#define	pcb_psl	pcb_tss.tss_eflags
56#define	pcb_usp	pcb_tss.tss_esp
57#define	pcb_fp	pcb_tss.tss_ebp
58#ifdef	notyet
59	u_char	pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
60#endif
61	caddr_t	pcb_ldt;		/* per process (user) LDT */
62	int	pcb_ldt_len;		/* number of LDT entries */
63	struct	save87	pcb_savefpu;	/* floating point state for 287/387 */
64/*
65 * Software pcb (extension)
66 */
67	u_char	pcb_flags;
68#define	FP_SOFTFP	0x01	/* process using software fltng pnt emulator */
69	caddr_t	pcb_onfault;	/* copyin/out fault recovery */
70};
71
72/*
73 * The pcb is augmented with machine-dependent additional data for
74 * core dumps. For the i386: ???
75 */
76struct md_coredump {
77};
78
79#ifdef KERNEL
80extern struct pcb *curpcb;		/* our current running pcb */
81void	savectx __P((struct pcb*));
82#endif
83
84#endif /* _I386_PCB_H_ */
85