/*	$OpenBSD: proc.h,v 1.2 1998/09/15 10:50:12 pefo Exp $	*/

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *	@(#)proc.h	8.1 (Berkeley) 6/10/93
 *	JNPR: proc.h,v 1.7.2.1 2007/09/10 06:25:24 girish
 */

#ifndef _MACHINE_PROC_H_
#define	_MACHINE_PROC_H_

#ifdef	CPU_CNMIPS
#include <machine/octeon_cop2.h>
#endif

/*
 * Machine-dependent part of the proc structure.
 */
struct mdthread {
	int		md_flags;	/* machine-dependent flags */
#if defined(__mips_n64) || defined(__mips_n32) /*  PHYSADDR_64_BIT */
	uint64_t	md_upte[KSTACK_PAGES];	/* ptes for mapping u pcb */
#else
	int		md_upte[KSTACK_PAGES];
#endif
	uintptr_t	md_ss_addr;	/* single step address for ptrace */
	int		md_ss_instr;	/* single step instruction for ptrace */
	register_t	md_saved_intr;
	u_int		md_spinlock_count;
/* The following is CPU dependent, but kept in for compatibility */
	int		md_pc_ctrl;	/* performance counter control */
	int		md_pc_count;	/* performance counter */
	int		md_pc_spill;	/* performance counter spill */
	void		*md_tls;
#ifdef	CPU_CNMIPS
	struct octeon_cop2_state	*md_cop2; /* kernel context */
	struct octeon_cop2_state	*md_ucop2; /* userland context */
#define	COP2_OWNER_USERLAND	0x0000		/* Userland owns COP2 */
#define	COP2_OWNER_KERNEL	0x0001		/* Kernel owns COP2 */
	int		md_cop2owner;
#endif
};

/* md_flags */
#define	MDTD_FPUSED	0x0001		/* Process used the FPU */
#define	MDTD_COP2USED	0x0002		/* Process used the COP2 */

struct mdproc {
	size_t		md_tls_tcb_offset;	/* TCB offset */
};

#define	MAXARGS		8
struct syscall_args {
	u_int code;
	struct sysent *callp;
	register_t args[MAXARGS];
};

#ifdef __mips_n64
#define	KINFO_PROC_SIZE 1088
#define	KINFO_PROC32_SIZE 816
#else
#define	KINFO_PROC_SIZE 816
#endif

#ifdef _KERNEL
#include <machine/pcb.h>

/* Get the current kernel thread stack usage. */
#define	GET_STACK_USAGE(total, used) do {				\
	struct thread *td = curthread;					\
	(total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb);	\
	(used) = td->td_kstack + (total) - (vm_offset_t)&td;		\
} while (0)

#endif  /* _KERNEL */
#endif	/* !_MACHINE_PROC_H_ */