cmd_strings.c 949 B

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647
  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. #include <config.h>
  9. #include <common.h>
  10. #include <command.h>
  11. static char *start_addr, *last_addr;
  12. int do_strings(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  13. {
  14. if (argc == 1) {
  15. cmd_usage(cmdtp);
  16. return 1;
  17. }
  18. if ((flag & CMD_FLAG_REPEAT) == 0) {
  19. start_addr = (char *)simple_strtoul(argv[1], NULL, 16);
  20. if (argc > 2)
  21. last_addr = (char *)simple_strtoul(argv[2], NULL, 16);
  22. else
  23. last_addr = (char *)-1;
  24. }
  25. char *addr = start_addr;
  26. do {
  27. puts(addr);
  28. puts("\n");
  29. addr += strlen(addr) + 1;
  30. } while (addr[0] && addr < last_addr);
  31. last_addr = addr + (last_addr - start_addr);
  32. start_addr = addr;
  33. return 0;
  34. }
  35. U_BOOT_CMD(strings, 3, 1, do_strings,
  36. "display strings",
  37. "<addr> [byte count]\n"
  38. " - display strings at <addr> for at least [byte count] or first double NUL"
  39. );