/* $OpenBSD: pcb.h,v 1.8 2025/02/24 13:18:01 jsg Exp $ */
/*
 * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#ifndef _MACHINE_PCB_H_
#define _MACHINE_PCB_H_

#include <machine/frame.h>
#include <machine/reg.h>

struct trapframe;

/*
 * Warning certain fields must be within 256 bytes of the beginning
 * of this structure.
 */
struct pcb {
        u_int           pcb_flags;
#define PCB_FPU         0x00000001      /* Process had FPU initialized */
#define PCB_SINGLESTEP  0x00000002      /* Single step process */
#define PCB_SVE         0x00000004      /* Process had SVE initialized */
        struct          trapframe *pcb_tf;

        register_t      pcb_sp;         /* stack pointer of switchframe */

        caddr_t         pcb_onfault;    /* On fault handler */
        struct fpreg    pcb_fpstate;    /* Floating Point state */
        __uint16_t      pcb_sve_p[16];  /* SVE predicate registers */
        __uint16_t      pcb_sve_ffr;    /* SVE first fault register */

        void            *pcb_tcb;
};
#endif  /* _MACHINE_PCB_H_ */