FreeBSD/Linux Kernel Cross Reference
sys/mips/include/pcb.h
1 /* $OpenBSD: pcb.h,v 1.3 1998/09/15 10:50:12 pefo Exp $ */
2
3 /*-
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
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 * 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: Utah Hdr: pcb.h 1.13 89/04/23
37 * from: @(#)pcb.h 8.1 (Berkeley) 6/10/93
38 * JNPR: pcb.h,v 1.2 2006/08/07 11:51:17 katta
39 * $FreeBSD: releng/9.0/sys/mips/include/pcb.h 211862 2010-08-27 07:45:50Z jchandra $
40 */
41
42 #ifndef _MACHINE_PCB_H_
43 #define _MACHINE_PCB_H_
44
45 #include <machine/frame.h>
46
47 /*
48 * MIPS process control block
49 */
50 struct pcb
51 {
52 struct trapframe pcb_regs; /* saved CPU and registers */
53 __register_t pcb_context[14]; /* kernel context for resume */
54 void *pcb_onfault; /* for copyin/copyout faults */
55 register_t pcb_tpc;
56 };
57
58 /* these match the regnum's in regnum.h
59 * used by switch.S
60 */
61 #define PCB_REG_S0 0
62 #define PCB_REG_S1 1
63 #define PCB_REG_S2 2
64 #define PCB_REG_S3 3
65 #define PCB_REG_S4 4
66 #define PCB_REG_S5 5
67 #define PCB_REG_S6 6
68 #define PCB_REG_S7 7
69 #define PCB_REG_SP 8
70 #define PCB_REG_S8 9
71 #define PCB_REG_RA 10
72 #define PCB_REG_SR 11
73 #define PCB_REG_GP 12
74 #define PCB_REG_PC 13
75
76
77 #ifdef _KERNEL
78 extern struct pcb *curpcb; /* the current running pcb */
79
80 void makectx(struct trapframe *, struct pcb *);
81 int savectx(struct pcb *);
82 #endif
83
84 #endif /* !_MACHINE_PCB_H_ */
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