/*      $NetBSD: pcb.h,v 1.3 2017/04/08 18:04:34 scole Exp $    */

/*-
* Copyright (c) 2003,2004 Marcel Moolenaar
* Copyright (c) 2000 Doug Rabson
* 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: src/sys/ia64/include/pcb.h,v 1.16 2004/08/16 19:05:08 marcel Exp $
*/

#ifndef _IA64_PCB_H_
#define _IA64_PCB_H_

#include <machine/_regset.h>
#include <sys/lock.h>

/*
* PCB: process control block
*/
struct pmap;
struct pcb {
       struct _special         pcb_special;
       struct _callee_saved    pcb_preserved;
       struct _callee_saved_fp pcb_preserved_fp;
       struct _high_fp         pcb_high_fp;
       struct pcpu             *pcb_fpcpu;
       kmutex_t                pcb_fpcpu_slock;


       /* IA32 specific registers. */
       uint64_t                pcb_ia32_cflg;
       uint64_t                pcb_ia32_eflag;
       uint64_t                pcb_ia32_fcr;
       uint64_t                pcb_ia32_fdr;
       uint64_t                pcb_ia32_fir;
       uint64_t                pcb_ia32_fsr;

       uint64_t                pcb_onfault;    /* for copy faults */
 //    struct pmap             *pcb_current_pmap;
};

#ifdef _KERNEL

#define savectx(p)      swapctx(p, NULL)

struct trapframe;

void makectx(struct trapframe *, struct pcb *);
/* XXX not sure about the attributes, for now use equivalent to freebsd */
void restorectx(struct pcb *) __attribute__ ((__noreturn__)); /* same as __dead2? */
int swapctx(struct pcb *old, struct pcb *new) __returns_twice;

void ia32_restorectx(struct pcb *);
void ia32_savectx(struct pcb *);

#endif

#endif /* _IA64_PCB_H_ */