pcb.h revision 178172 
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: head/sys/mips/include/pcb.h 178172 2008-04-13 07:27:37Z imp $
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 */
50struct pcb
51{
52	struct trapframe pcb_regs;	/* saved CPU and registers */
53	label_t pcb_context;		/* kernel context for resume */
54	int	pcb_onfault;		/* for copyin/copyout faults */
55};
56
57/* these match the regnum's in regnum.h
58 * used by switch.S
59 */
60#define PCB_REG_S0   0
61#define PCB_REG_S1   1
62#define PCB_REG_S2   2
63#define PCB_REG_S3   3
64#define PCB_REG_S4   4
65#define PCB_REG_S5   5
66#define PCB_REG_S6   6
67#define PCB_REG_S7   7
68#define PCB_REG_SP   8
69#define PCB_REG_S8   9
70#define PCB_REG_RA   10
71#define PCB_REG_SR   11
72#define PCB_REG_GP   12
73
74
75#ifdef _KERNEL
76extern struct pcb *curpcb;		/* the current running pcb */
77
78void makectx(struct trapframe *, struct pcb *);
79int savectx(struct pcb *);
80#endif
81
82#endif	/* !_MACHINE_PCB_H_ */
83