FreeBSD/Linux Kernel Cross Reference
sys/i386/include/pcb.h
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 1.16.2.1 1999/09/05 08:11:57 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
49 struct 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 */
76 struct md_coredump {
77 };
78
79 #ifdef KERNEL
80 extern struct pcb *curpcb; /* our current running pcb */
81 void savectx __P((struct pcb*));
82 #endif
83
84 #endif /* _I386_PCB_H_ */
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