hexdump.c (1734B)
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 }