1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2001 Jake Burkholder.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef	_MACHINE_PCB_H_
32#define	_MACHINE_PCB_H_
33
34#ifndef LOCORE
35#include <machine/frame.h>
36#endif
37
38#define	MAXWIN	8
39
40#define	PCB_FEF	(1 << 0)
41
42#ifndef LOCORE
43
44/* NOTE: pcb_ufp must be aligned on a 64 byte boundary. */
45struct pcb {
46	struct	rwindow pcb_rw[MAXWIN];
47	uint32_t pcb_kfp[64];
48	uint32_t pcb_ufp[64];
49	uint64_t pcb_rwsp[MAXWIN];
50	uint64_t pcb_flags;
51	uint64_t pcb_nsaved;
52	uint64_t pcb_pc;
53	uint64_t pcb_sp;
54	uint64_t pcb_tpc;
55	uint64_t pcb_pad[3];
56} __aligned(64);
57
58#ifdef _KERNEL
59void	makectx(struct trapframe *tf, struct pcb *pcb);
60int	savectx(struct pcb *pcb) __returns_twice;
61#endif
62
63#endif /* !LOCORE */
64
65#endif /* !_MACHINE_PCB_H_ */
66