kernel - Make pcb_onfault more robust.
[dragonfly.git] / sys / platform / pc32 / include / pcb.h
CommitLineData
984263bc
MD
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 * $FreeBSD: src/sys/i386/include/pcb.h,v 1.32.2.1 2001/08/15 01:23:52 peter Exp $
431d0fef 38 * $DragonFly: src/sys/platform/pc32/include/pcb.h,v 1.12 2007/01/09 23:34:03 dillon Exp $
984263bc
MD
39 */
40
f8334305
MD
41#ifndef _MACHINE_PCB_H_
42#define _MACHINE_PCB_H_
984263bc
MD
43
44/*
45 * Intel 386 process control block
46 */
f8334305 47#include <machine/npx.h>
984263bc
MD
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
984263bc 65 struct pcb_ldt *pcb_ldt; /* per process (user) LDT */
984263bc
MD
66 union savefpu pcb_save;
67 u_char pcb_flags;
68#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
69#define PCB_DBREGS 0x02 /* process using debug registers */
431d0fef 70#define FP_VIRTFP 0x04 /* virtual kernel wants exception */
984263bc 71 caddr_t pcb_onfault; /* copyin/out fault recovery */
93ad6da2 72 int pcb_onfault_sp; /* validate onfault state */
984263bc
MD
73 struct pcb_ext *pcb_ext; /* optional pcb extension */
74 u_long __pcb_spare[3]; /* adjust to avoid core dump size changes */
75};
76
984263bc
MD
77#ifdef _KERNEL
78
3ae0cd58 79void savectx (struct pcb *);
984263bc
MD
80#endif
81
f8334305 82#endif /* _MACHINE_PCB_H_ */