1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * cmd_strings.c - just like `strings` command
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (c) 2008 Analog Devices Inc.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Licensed under the GPL-2 or later.
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <config.h>
10*4882a593Smuzhiyun #include <common.h>
11*4882a593Smuzhiyun #include <command.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun static char *start_addr, *last_addr;
14*4882a593Smuzhiyun
do_strings(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])15*4882a593Smuzhiyun int do_strings(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun if (argc == 1)
18*4882a593Smuzhiyun return CMD_RET_USAGE;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun if ((flag & CMD_FLAG_REPEAT) == 0) {
21*4882a593Smuzhiyun start_addr = (char *)simple_strtoul(argv[1], NULL, 16);
22*4882a593Smuzhiyun if (argc > 2)
23*4882a593Smuzhiyun last_addr = (char *)simple_strtoul(argv[2], NULL, 16);
24*4882a593Smuzhiyun else
25*4882a593Smuzhiyun last_addr = (char *)-1;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun char *addr = start_addr;
29*4882a593Smuzhiyun do {
30*4882a593Smuzhiyun puts(addr);
31*4882a593Smuzhiyun puts("\n");
32*4882a593Smuzhiyun addr += strlen(addr) + 1;
33*4882a593Smuzhiyun } while (addr[0] && addr < last_addr);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun last_addr = addr + (last_addr - start_addr);
36*4882a593Smuzhiyun start_addr = addr;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun return 0;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun U_BOOT_CMD(
42*4882a593Smuzhiyun strings, 3, 1, do_strings,
43*4882a593Smuzhiyun "display strings",
44*4882a593Smuzhiyun "<addr> [byte count]\n"
45*4882a593Smuzhiyun " - display strings at <addr> for at least [byte count] or first double NUL"
46*4882a593Smuzhiyun );
47