1/* $OpenBSD: pcb.h,v 1.8 2025/02/24 13:18:01 jsg 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#include <machine/reg.h>
22
23struct trapframe;
24
25/*
26 * Warning certain fields must be within 256 bytes of the beginning
27 * of this structure.
28 */
29struct pcb {
30 u_int pcb_flags;
31#define PCB_FPU 0x00000001 /* Process had FPU initialized */
32#define PCB_SINGLESTEP 0x00000002 /* Single step process */
33#define PCB_SVE 0x00000004 /* Process had SVE initialized */
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 __uint16_t pcb_sve_p[16]; /* SVE predicate registers */
41 __uint16_t pcb_sve_ffr; /* SVE first fault register */
42
43 void *pcb_tcb;
44};
45#endif /* _MACHINE_PCB_H_ */