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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: }