1/* $OpenBSD: pcb.h,v 1.4 2024/10/15 09:16:39 jsg Exp $ */
2
3/*
4 * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18#ifndef _MACHINE_PCB_H_
19#define _MACHINE_PCB_H_
20
21#include <machine/frame.h>
22#include <machine/reg.h>
23
24struct trapframe;
25
26/*
27 * Warning certain fields must be within 256 bytes of the beginning
28 * of this structure.
29 */
30struct pcb {
31 u_int pcb_flags;
32#define PCB_FPU 0x00000001 /* Process had FPU initialized */
33#define PCB_SINGLESTEP 0x00000002 /* Single step process */
34 struct trapframe *pcb_tf;
35
36 register_t pcb_sp; // stack pointer of switchframe
37
38 caddr_t pcb_onfault; // On fault handler
39 struct fpreg pcb_fpstate; // Floating Point state */
40};
41#endif /* _MACHINE_PCB_H_ */