1 /*
2 * cmd_strings.c - just like `strings` command
3 *
4 * Copyright (c) 2008 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9 #include <config.h>
10 #include <common.h>
11 #include <command.h>
12
13 static char *start_addr, *last_addr;
14
do_strings(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])15 int do_strings(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
16 {
17 if (argc == 1)
18 return CMD_RET_USAGE;
19
20 if ((flag & CMD_FLAG_REPEAT) == 0) {
21 start_addr = (char *)simple_strtoul(argv[1], NULL, 16);
22 if (argc > 2)
23 last_addr = (char *)simple_strtoul(argv[2], NULL, 16);
24 else
25 last_addr = (char *)-1;
26 }
27
28 char *addr = start_addr;
29 do {
30 puts(addr);
31 puts("\n");
32 addr += strlen(addr) + 1;
33 } while (addr[0] && addr < last_addr);
34
35 last_addr = addr + (last_addr - start_addr);
36 start_addr = addr;
37
38 return 0;
39 }
40
41 U_BOOT_CMD(
42 strings, 3, 1, do_strings,
43 "display strings",
44 "<addr> [byte count]\n"
45 " - display strings at <addr> for at least [byte count] or first double NUL"
46 );
47