1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * The 'exception' command can be used for testing exception handling.
4 *
5 * Copyright (c) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
6 */
7
8 #include <command.h>
9 #include <env.h>
10
do_sigsegv(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])11 static int do_sigsegv(struct cmd_tbl *cmdtp, int flag, int argc,
12 char *const argv[])
13 {
14 u8 *ptr = NULL;
15
16 *ptr = 0;
17 return CMD_RET_FAILURE;
18 }
19
do_undefined(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])20 static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc,
21 char *const argv[])
22 {
23 #ifdef __powerpc__
24 asm volatile (".long 0xffffffff\n");
25 #else
26 asm volatile (".word 0xffff\n");
27 #endif
28 return CMD_RET_FAILURE;
29 }
30
31 static struct cmd_tbl cmd_sub[] = {
32 U_BOOT_CMD_MKENT(sigsegv, CONFIG_SYS_MAXARGS, 1, do_sigsegv,
33 "", ""),
34 U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined,
35 "", ""),
36 };
37
38 U_BOOT_LONGHELP(exception,
39 "<ex>\n"
40 " The following exceptions are available:\n"
41 " undefined - undefined instruction\n"
42 " sigsegv - illegal memory access\n");
43
44 #include <exception.h>
45