1/* $OpenBSD: pcb.h,v 1.5 2022/01/01 18:52:37 kettenis Exp $ */
2/*
3 * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17#ifndef	_MACHINE_PCB_H_
18#define	_MACHINE_PCB_H_
19
20#include <machine/frame.h>
21
22#include <machine/pte.h>
23#include <machine/reg.h>
24
25struct trapframe;
26
27/*
28 * Warning certain fields must be within 256 bytes of the beginning
29 * of this structure.
30 */
31struct pcb {
32	u_int		pcb_flags;
33#define	PCB_FPU		0x00000001	/* Process had FPU initialized */
34#define	PCB_SINGLESTEP	0x00000002	/* Single step process */
35	struct		trapframe *pcb_tf;
36
37	register_t	pcb_sp;		// stack pointer of switchframe
38
39	caddr_t		pcb_onfault;	// On fault handler
40	struct fpreg	pcb_fpstate;	// Floating Point state */
41
42	void		*pcb_tcb;
43};
44#endif	/* _MACHINE_PCB_H_ */
45