1 /* $OpenBSD: pcb.h,v 1.13 2004/07/02 16:29:55 niklas Exp $ */
2 /* $NetBSD: pcb.h,v 1.21 1996/01/08 13:51:42 mycroft Exp $ */
3
4 /*-
5 * Copyright (c) 1995 Charles M. Hannum. All rights reserved.
6 * Copyright (c) 1990 The Regents of the University of California.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * William Jolitz.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. 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 * @(#)pcb.h 5.10 (Berkeley) 5/12/91
37 */
38
39 /*
40 * Intel 386 process control block
41 */
42
43 #ifndef _I386_PCB_H_
44 #define _I386_PCB_H_
45
46 #include <sys/signal.h>
47
48 #include <machine/segments.h>
49 #include <machine/tss.h>
50 #include <machine/npx.h>
51 #include <machine/sysarch.h>
52
53 #define NIOPORTS 1024 /* # of ports we allow to be mapped */
54
55 struct pcb {
56 struct i386tss pcb_tss;
57 #define pcb_cr3 pcb_tss.tss_cr3
58 #define pcb_esp pcb_tss.tss_esp
59 #define pcb_ebp pcb_tss.tss_ebp
60 #define pcb_cs pcb_tss.tss_cs
61 #define pcb_ldt_sel pcb_tss.tss_ldt
62 int pcb_tss_sel;
63 union descriptor *pcb_ldt; /* per process (user) LDT */
64 int pcb_ldt_len; /* number of LDT entries */
65 int pcb_cr0; /* saved image of CR0 */
66 int pcb_pad[2]; /* savefpu on 16-byte boundary */
67 union savefpu pcb_savefpu; /* floating point state for FPU */
68 struct emcsts pcb_saveemc; /* Cyrix EMC state */
69 /*
70 * Software pcb (extension)
71 */
72 caddr_t pcb_onfault; /* copyin/out fault recovery */
73 int vm86_eflags; /* virtual eflags for vm86 mode */
74 int vm86_flagmask; /* flag mask for vm86 mode */
75 void *vm86_userp; /* XXX performance hack */
76 struct pmap *pcb_pmap; /* back pointer to our pmap */
77 struct cpu_info *pcb_fpcpu; /* cpu holding our fpu state */
78 u_long pcb_iomap[NIOPORTS/32]; /* I/O bitmap */
79 u_char pcb_iomap_pad; /* required; must be 0xff, says intel */
80 };
81
82 /*
83 * The pcb is augmented with machine-dependent additional data for
84 * core dumps. For the i386, there is nothing to add.
85 */
86 struct md_coredump {
87 long md_pad[8];
88 };
89
90 #endif /* _I386_PCB_H_ */