/* $OpenBSD: locore2.c,v 1.3 2003/06/02 23:27:56 millert Exp $ */
/* $NetBSD: locore2.c,v 1.2 2000/05/26 21:20:21 thorpej Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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.
*
* @(#)locore2.c 8.4 (Berkeley) 12/10/93
*/
/*
* Primitives which are in locore.s on other machines,
* but which have no reason to be assembly-coded on SPARC.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <sys/resourcevar.h>
#include <machine/cpu.h>
/*
* Put process p on the run queue indicated by its priority.
* Calls should be made at splstatclock(), and p->p_stat should be SRUN.
*/
void
setrunqueue(p)
register struct proc *p;
{
register struct prochd *q;
register struct proc *oldlast;
register int which = p->p_priority >> 2;
if (p->p_back != NULL)
panic("setrunqueue");
q = &qs[which];
whichqs |= 1 << which;
p->p_forw = (struct proc *)q;
p->p_back = oldlast = q->ph_rlink;
q->ph_rlink = p;
oldlast->p_forw = p;
}
/*
* Remove process p from its run queue, which should be the one
* indicated by its priority. Calls should be made at splstatclock().
*/
void
remrunqueue(p)
register struct proc *p;
{
register int which = p->p_priority >> 2;
register struct prochd *q;
if ((whichqs & (1 << which)) == 0)
panic("remrq");
p->p_forw->p_back = p->p_back;
p->p_back->p_forw = p->p_forw;
p->p_back = NULL;
q = &qs[which];
if (q->ph_link == (struct proc *)q)
whichqs &= ~(1 << which);
}