/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2001 Jake Burkholder.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */

#ifndef	_MACHINE_PCB_H_
#define	_MACHINE_PCB_H_

#ifndef LOCORE
#include <machine/frame.h>
#endif

#define	MAXWIN	8

#define	PCB_FEF	(1 << 0)

#ifndef LOCORE

/* NOTE: pcb_ufp must be aligned on a 64 byte boundary. */
struct pcb {
	struct	rwindow pcb_rw[MAXWIN];
	uint32_t pcb_kfp[64];
	uint32_t pcb_ufp[64];
	uint64_t pcb_rwsp[MAXWIN];
	uint64_t pcb_flags;
	uint64_t pcb_nsaved;
	uint64_t pcb_pc;
	uint64_t pcb_sp;
	uint64_t pcb_tpc;
	uint64_t pcb_pad[3];
} __aligned(64);

#ifdef _KERNEL
void	makectx(struct trapframe *tf, struct pcb *pcb);
int	savectx(struct pcb *pcb) __returns_twice;
#endif

#endif /* !LOCORE */

#endif /* !_MACHINE_PCB_H_ */