include/exception.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * The 'exception' command can be used for testing exception handling.
   4  *
   5  * Copyright (c) 2018, Heinrich Schuchardt <xypron.glpk@gmx.de>
   6  */
   7
   8 #include <command.h>
   9
  10 static int do_exception(struct cmd_tbl *cmdtp, int flag, int argc,
  11                         char *const argv[])
  12 {
  13         struct cmd_tbl *cp;
  14
  15         if (argc != 2)
  16                 return CMD_RET_USAGE;
  17
  18         /* drop sub-command parameter */
  19         argc--;
  20         argv++;
  21
  22         cp = find_cmd_tbl(argv[0], cmd_sub, ARRAY_SIZE(cmd_sub));
  23
  24         if (cp)
  25                 return cp->cmd(cmdtp, flag, argc, argv);
  26
  27         return CMD_RET_USAGE;
  28 }
  29
  30 static int exception_complete(int argc, char *const argv[], char last_char,
  31                               int maxv, char *cmdv[])
  32 {
  33         int len = 0;
  34         int i = 0;
  35         struct cmd_tbl *cmdtp;
  36
  37         switch (argc) {
  38         case 1:
  39                 break;
  40         case 2:
  41                 len = strlen(argv[1]);
  42                 break;
  43         default:
  44                 return 0;
  45         }
  46         for (cmdtp = cmd_sub; cmdtp != cmd_sub + ARRAY_SIZE(cmd_sub); cmdtp++) {
  47                 if (i >= maxv - 1)
  48                         return i;
  49                 if (!strncmp(argv[1], cmdtp->name, len))
  50                         cmdv[i++] = cmdtp->name;
  51         }
  52         cmdv[i] = NULL;
  53         return i;
  54 }
  55
  56 U_BOOT_CMD_COMPLETE(
  57         exception, 2, 0, do_exception,
  58         "Forces an exception to occur",
  59         exception_help_text, exception_complete
  60 );