Annotation of prex/boot/common/debug.c, Revision 1.2
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:
34: #include <prex/bootinfo.h>
35: #include <platform.h>
36: #include <boot.h>
37:
38: #ifdef DEBUG
39: /*
40: * printf - print formated string
41: */
42: void
43: printf(const char *fmt, ...)
44: {
45: static const char digits[] = "0123456789abcdef";
46: va_list ap;
47: char buf[10];
48: char *s;
49: unsigned r, u;
50: int c;
51:
52: va_start(ap, fmt);
53: while ((c = *fmt++)) {
54: if (c == '%') {
55: c = *fmt++;
56: switch (c) {
57: case 'c':
58: putchar(va_arg(ap, int));
59: continue;
60: case 's':
61: s = va_arg(ap, char *);
62: if (s == NULL)
63: s = "<NULL>";
64: for (; *s; s++) {
65: putchar((int)*s);
66: }
67: continue;
68: case 'u':
69: case 'x':
70: r = c == 'u' ? 10U : 16U;
71: u = va_arg(ap, unsigned);
72: s = buf;
73: do
74: *s++ = digits[u % r];
75: while (u /= r);
76: while (--s >= buf)
77: putchar((int)*s);
78: continue;
79: }
80: }
1.2 ! nbrk 81: #ifdef PRINTF_CRLF
! 82: /* add form-feed to carriage return */
! 83: if ((char)c == '\n') {
! 84: putchar('\r');
! 85: putchar('\f');
! 86: } else
! 87: #endif /* PRINTF_CRLF */
! 88:
1.1 nbrk 89: putchar((int)c);
90: }
91: va_end(ap);
92: }
93: #endif /* DEBUG */
94:
95: /*
96: * Show error and hang up.
97: */
98: void
99: panic(const char *msg)
100: {
101:
102: #ifdef DEBUG
103: printf("Panic: %s\n", msg);
104: #endif
105: machine_panic();
106: /* NOTREACHED */
107: }
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