Annotation of sys/arch/powerpc/powerpc/Locore.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: Locore.c,v 1.10 2003/10/15 02:43:09 drahn Exp $ */
! 2:
! 3: /*
! 4: * Copyright (C) 1995, 1996 Wolfgang Solfrank.
! 5: * Copyright (C) 1995, 1996 TooLs GmbH.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by TooLs GmbH.
! 19: * 4. The name of TooLs GmbH may not be used to endorse or promote products
! 20: * derived from this software without specific prior written permission.
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! 26: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 27: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 28: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 29: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 30: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 31: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: */
! 33:
! 34: /*
! 35: * Some additional routines that happened to be in locore.S traditionally,
! 36: * but have no need to be coded in assembly.
! 37: */
! 38:
! 39: #include <sys/param.h>
! 40: #include <sys/proc.h>
! 41: #include <sys/systm.h>
! 42:
! 43: extern int whichqs;
! 44:
! 45: /*
! 46: * Put process p on the run queue, given by its priority.
! 47: * Calls should be made at splstatclock(), and p->p_stat should be SRUN.
! 48: */
! 49: void
! 50: setrunqueue(struct proc *p)
! 51: {
! 52: struct prochd *q;
! 53: struct proc *oldlast;
! 54: int which = p->p_priority >> 2;
! 55:
! 56: #ifdef DIAGNOSTIC
! 57: if (p->p_back)
! 58: panic("setrunqueue");
! 59: #endif
! 60: q = &qs[which];
! 61: whichqs |= 0x80000000 >> which;
! 62: p->p_forw = (struct proc *)q;
! 63: p->p_back = oldlast = q->ph_rlink;
! 64: q->ph_rlink = p;
! 65: oldlast->p_forw = p;
! 66: }
! 67:
! 68: /*
! 69: * Remove process p from its run queue, given by its priority.
! 70: * Calls should be made at splstatclock().
! 71: */
! 72: void
! 73: remrunqueue(struct proc *p)
! 74: {
! 75: int which = p->p_priority >> 2;
! 76: struct prochd *q;
! 77:
! 78: #ifdef DIAGNOSTIC
! 79: if (!(whichqs & (0x80000000 >> which)))
! 80: panic("remrunqueue");
! 81: #endif
! 82: p->p_forw->p_back = p->p_back;
! 83: p->p_back->p_forw = p->p_forw;
! 84: p->p_back = NULL;
! 85: q = &qs[which];
! 86: if (q->ph_link == (struct proc *)q)
! 87: whichqs &= ~(0x80000000 >> which);
! 88: }
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