Annotation of prex-old/boot/common/debug.c, Revision 1.1.1.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2005, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: /*
31: * debug.c - loader debug functions
32: */
33: #include <prex/bootinfo.h>
34: #include <platform.h>
35: #include <boot.h>
36:
37: #undef printk
38:
39: /*
40: * printk - print formated string
41: */
42: void
43: printk(const char *fmt, ...)
44: {
45: #ifdef DEBUG
46: static const char digits[16] = "0123456789abcdef";
47: va_list ap;
48: char buf[10];
49: char *s;
50: unsigned r, u;
51: int c;
52:
53: va_start(ap, fmt);
54: while ((c = *fmt++)) {
55: if (c == '%') {
56: c = *fmt++;
57: switch (c) {
58: case 'c':
59: putc(va_arg(ap, int));
60: continue;
61: case 's':
62: for (s = va_arg(ap, char *); *s; s++)
63: putc((int)*s);
64: continue;
65: case 'u':
66: case 'x':
67: r = c == 'u' ? 10U : 16U;
68: u = va_arg(ap, unsigned);
69: s = buf;
70: do
71: *s++ = digits[u % r];
72: while (u /= r);
73: while (--s >= buf)
74: putc((int)*s);
75: continue;
76: }
77: }
78: putc((int)c);
79: }
80: va_end(ap);
81: #endif /* DEBUG */
82: }
83:
84: /*
85: * Show error and hang up.
86: */
87: void
88: panic(const char *msg)
89: {
90:
91: printk("Panic: %s\n", msg);
92: for (;;);
93: }
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