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- /*
- * Copyright 2013 Google Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but without any warranty; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
- #include "u.h"
- #include "tos.h"
- #include "../port/lib.h"
- #include "mem.h"
- #include "dat.h"
- #include "fns.h"
- #include "../port/error.h"
- static int isprint(int c)
- {
- return (c >= 32 && c <= 126);
- }
- void hexdump(void *v, int length)
- {
- int i;
- uint8_t *m = v;
- uintptr_t memory = (uintptr_t) v;
- int all_zero = 0;
- print("hexdump: %p, %u\n", v, length);
- for (i = 0; i < length; i += 16) {
- int j;
- all_zero++;
- for (j = 0; (j < 16) && (i + j < length); j++) {
- if (m[i + j] != 0) {
- all_zero = 0;
- break;
- }
- }
- if (all_zero < 2) {
- print("%p:", (void *)(memory + i));
- for (j = 0; j < 16; j++)
- print(" %02x", m[i + j]);
- print(" ");
- for (j = 0; j < 16; j++)
- print("%c", isprint(m[i + j]) ? m[i + j] : '.');
- print("\n");
- } else if (all_zero == 2) {
- print("...\n");
- }
- }
- }
- void pahexdump(uintptr_t pa, int len)
- {
- void *v = KADDR(pa);
- hexdump(v, len);
- }
- /* Print a string, with printables preserved, and \xxx where not possible. */
- int printdump(char *buf, int buflen, uint8_t *data)
- {
- int ret = 0;
- int ix = 0;
- while (ret < buflen) {
- if (isprint(data[ix])) {
- buf[ret++] = data[ix];
- } else if (ret < buflen - 4) {
- /* guarantee there is room for a \xxx sequence */
- ret += snprint(&buf[ret], buflen-ret, "\\%03o", data[ix]);
- } else {
- break;
- }
- ix++;
- }
- return ret;
- }
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