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 * $FreeBSD$
38 */
39
40 #ifndef _I386_PCB_H_
41 #define _I386_PCB_H_
42
43 /*
44 * Intel 386 process control block
45 */
46 #include <machine/npx.h>
47
48 struct pcb {
49 int pcb_cr3;
50 int pcb_edi;
51 int pcb_esi;
52 int pcb_ebp;
53 int pcb_esp;
54 int pcb_ebx;
55 int pcb_eip;
56 caddr_t pcb_ldt; /* per process (user) LDT */
57 int pcb_ldt_len; /* number of LDT entries */
58 struct save87 pcb_savefpu; /* floating point state for 287/387 */
59 u_char pcb_flags;
60 #define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
61 caddr_t pcb_onfault; /* copyin/out fault recovery */
62 #ifdef SMP
63 u_long pcb_mpnest;
64 #else
65 u_long pcb_mpnest_dontuse;
66 #endif
67 int pcb_fs;
68 int pcb_gs;
69 #ifdef VM86
70 struct pcb_ext *pcb_ext; /* optional pcb extension */
71 #else
72 struct pcb_ext *pcb_ext_dontuse;
73 #endif
74 u_long __pcb_spare[1]; /* adjust to avoid core dump size changes */
75 };
76
77 /*
78 * The pcb is augmented with machine-dependent additional data for
79 * core dumps. For the i386: ???
80 */
81 struct md_coredump {
82 };
83
84 #ifdef KERNEL
85
86 extern struct pcb *curpcb; /* our current running pcb */
87
88 void savectx __P((struct pcb *));
89 #endif
90
91 #endif /* _I386_PCB_H_ */
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