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
do_exception(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])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
exception_complete(int argc,char * const argv[],char last_char,int maxv,char * cmdv[])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 );
61