xref: /titanic_52/usr/src/boot/lib/libstand/twiddle.c (revision 4a5d661a82b942b6538acd26209d959ce98b593a)
1*4a5d661aSToomas Soome /*-
2*4a5d661aSToomas Soome  * Copyright (c) 1986, 1988, 1991, 1993
3*4a5d661aSToomas Soome  *	The Regents of the University of California.  All rights reserved.
4*4a5d661aSToomas Soome  * (c) UNIX System Laboratories, Inc.
5*4a5d661aSToomas Soome  * All or some portions of this file are derived from material licensed
6*4a5d661aSToomas Soome  * to the University of California by American Telephone and Telegraph
7*4a5d661aSToomas Soome  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8*4a5d661aSToomas Soome  * the permission of UNIX System Laboratories, Inc.
9*4a5d661aSToomas Soome  *
10*4a5d661aSToomas Soome  * Redistribution and use in source and binary forms, with or without
11*4a5d661aSToomas Soome  * modification, are permitted provided that the following conditions
12*4a5d661aSToomas Soome  * are met:
13*4a5d661aSToomas Soome  * 1. Redistributions of source code must retain the above copyright
14*4a5d661aSToomas Soome  *    notice, this list of conditions and the following disclaimer.
15*4a5d661aSToomas Soome  * 2. Redistributions in binary form must reproduce the above copyright
16*4a5d661aSToomas Soome  *    notice, this list of conditions and the following disclaimer in the
17*4a5d661aSToomas Soome  *    documentation and/or other materials provided with the distribution.
18*4a5d661aSToomas Soome  * 4. Neither the name of the University nor the names of its contributors
19*4a5d661aSToomas Soome  *    may be used to endorse or promote products derived from this software
20*4a5d661aSToomas Soome  *    without specific prior written permission.
21*4a5d661aSToomas Soome  *
22*4a5d661aSToomas Soome  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23*4a5d661aSToomas Soome  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24*4a5d661aSToomas Soome  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25*4a5d661aSToomas Soome  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26*4a5d661aSToomas Soome  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27*4a5d661aSToomas Soome  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28*4a5d661aSToomas Soome  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29*4a5d661aSToomas Soome  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30*4a5d661aSToomas Soome  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31*4a5d661aSToomas Soome  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32*4a5d661aSToomas Soome  * SUCH DAMAGE.
33*4a5d661aSToomas Soome  *
34*4a5d661aSToomas Soome  *	@(#)subr_prf.c	8.3 (Berkeley) 1/21/94
35*4a5d661aSToomas Soome  */
36*4a5d661aSToomas Soome 
37*4a5d661aSToomas Soome #include <sys/cdefs.h>
38*4a5d661aSToomas Soome __FBSDID("$FreeBSD$");
39*4a5d661aSToomas Soome 
40*4a5d661aSToomas Soome #include <sys/types.h>
41*4a5d661aSToomas Soome #include "stand.h"
42*4a5d661aSToomas Soome 
43*4a5d661aSToomas Soome /* Extra functions from NetBSD standalone printf.c */
44*4a5d661aSToomas Soome 
45*4a5d661aSToomas Soome static u_int globaldiv;
46*4a5d661aSToomas Soome 
47*4a5d661aSToomas Soome void
48*4a5d661aSToomas Soome twiddle(u_int callerdiv)
49*4a5d661aSToomas Soome {
50*4a5d661aSToomas Soome 	static u_int callercnt, globalcnt, pos;
51*4a5d661aSToomas Soome 
52*4a5d661aSToomas Soome 	callercnt++;
53*4a5d661aSToomas Soome 	if (callerdiv > 1 && (callercnt % callerdiv) != 0)
54*4a5d661aSToomas Soome 		return;
55*4a5d661aSToomas Soome 
56*4a5d661aSToomas Soome 	globalcnt++;
57*4a5d661aSToomas Soome 	if (globaldiv > 1 && (globalcnt % globaldiv) != 0)
58*4a5d661aSToomas Soome 		return;
59*4a5d661aSToomas Soome 
60*4a5d661aSToomas Soome 	putchar("|/-\\"[pos++ & 3]);
61*4a5d661aSToomas Soome 	putchar('\b');
62*4a5d661aSToomas Soome }
63*4a5d661aSToomas Soome 
64*4a5d661aSToomas Soome void
65*4a5d661aSToomas Soome twiddle_divisor(u_int gdiv)
66*4a5d661aSToomas Soome {
67*4a5d661aSToomas Soome 
68*4a5d661aSToomas Soome 	globaldiv = gdiv;
69*4a5d661aSToomas Soome }
70