Annotation of sys/arch/powerpc/powerpc/Locore.c, Revision 1.1.1.1
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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