1 /*
2 *
3 * Copyright 2013 Google Inc.
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. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <libpayload.h>
30
hexdump(const void * memory,size_t length)31 void hexdump(const void *memory, size_t length)
32 {
33 int i;
34 uint8_t *m;
35 int all_zero = 0;
36
37 m = (uint8_t *) memory;
38
39 for (i = 0; i < length; i += 16) {
40 int j;
41
42 all_zero++;
43 for (j = 0; j < 16; j++) {
44 if (m[i + j] != 0) {
45 all_zero = 0;
46 break;
47 }
48 }
49
50 if (all_zero < 2) {
51 printf("%8p:", memory + i);
52 for (j = 0; j < 16; j++)
53 printf(" %02x", m[i + j]);
54 printf(" ");
55 for (j = 0; j < 16; j++)
56 printf("%c",
57 isprint(m[i + j]) ? m[i + j] : '.');
58 printf("\n");
59 } else if (all_zero == 2) {
60 printf("...\n");
61 }
62 }
63 }
64