// SPDX-License-Identifier: GPL-2.0+ /* * The 'exception' command can be used for testing exception handling. * * Copyright (c) 2018, Heinrich Schuchardt */ #include #include static int do_unaligned(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { asm volatile ( "auipc a1, 0\n" "ori a1, a1, 3\n" "lw a2, (0)(a1)\n" ); printf("The system supports unaligned access.\n"); return CMD_RET_SUCCESS; } static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { asm volatile (".word 0xffffffff\n"); return CMD_RET_FAILURE; } static struct cmd_tbl cmd_sub[] = { U_BOOT_CMD_MKENT(unaligned, CONFIG_SYS_MAXARGS, 1, do_unaligned, "", ""), U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined, "", ""), }; static char exception_help_text[] = "\n" " The following exceptions are available:\n" " undefined - illegal instruction\n" " unaligned - load address misaligned\n" ; #include