Merge tag 'for-upstream' of git://repo.or.cz/qemu/kevin into staging
[qemu.git] / util / hexdump.c
1 /*
2 * Helper to hexdump a buffer
3 *
4 * Copyright (c) 2013 Red Hat, Inc.
5 * Copyright (c) 2013 Gerd Hoffmann <kraxel@redhat.com>
6 * Copyright (c) 2013 Peter Crosthwaite <peter.crosthwaite@xilinx.com>
7 * Copyright (c) 2013 Xilinx, Inc
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
14 */
15
16 #include "qemu/osdep.h"
17 #include "qemu/cutils.h"
18
19 void qemu_hexdump_line(char *line, unsigned int b, const void *bufptr,
20 unsigned int len, bool ascii)
21 {
22 const char *buf = bufptr;
23 int i, c;
24
25 if (len > QEMU_HEXDUMP_LINE_BYTES) {
26 len = QEMU_HEXDUMP_LINE_BYTES;
27 }
28
29 line += snprintf(line, 6, "%04x:", b);
30 for (i = 0; i < QEMU_HEXDUMP_LINE_BYTES; i++) {
31 if ((i % 4) == 0) {
32 *line++ = ' ';
33 }
34 if (i < len) {
35 line += sprintf(line, " %02x", (unsigned char)buf[b + i]);
36 } else {
37 line += sprintf(line, " ");
38 }
39 }
40 if (ascii) {
41 *line++ = ' ';
42 for (i = 0; i < len; i++) {
43 c = buf[b + i];
44 if (c < ' ' || c > '~') {
45 c = '.';
46 }
47 *line++ = c;
48 }
49 }
50 *line = '\0';
51 }
52
53 void qemu_hexdump(FILE *fp, const char *prefix,
54 const void *bufptr, size_t size)
55 {
56 unsigned int b, len;
57 char line[QEMU_HEXDUMP_LINE_LEN];
58
59 for (b = 0; b < size; b += QEMU_HEXDUMP_LINE_BYTES) {
60 len = size - b;
61 qemu_hexdump_line(line, b, bufptr, len, true);
62 fprintf(fp, "%s: %s\n", prefix, line);
63 }
64
65 }