From dab8788a8cadaa18a44001f98fa959fc672fff4f Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Wed, 26 Dec 2018 17:20:35 +0100 Subject: cmd: add exception command The 'exception' command allows to test exception handling. This implementation supports ARM, x86, RISC-V and the following exceptions: * 'breakpoint' - prefetch abort exception (ARM 32bit only) * 'unaligned' - data abort exception (ARM only) * 'undefined' - undefined instruction exception Signed-off-by: Heinrich Schuchardt --- cmd/riscv/exception.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 cmd/riscv/exception.c (limited to 'cmd/riscv/exception.c') diff --git a/cmd/riscv/exception.c b/cmd/riscv/exception.c new file mode 100644 index 0000000000..547fb7d132 --- /dev/null +++ b/cmd/riscv/exception.c @@ -0,0 +1,29 @@ +// 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_undefined(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + asm volatile (".word 0xffffffff\n"); + return CMD_RET_FAILURE; +} + +static cmd_tbl_t cmd_sub[] = { + U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined, + "", ""), +}; + +static char exception_help_text[] = + "\n" + " The following exceptions are available:\n" + " undefined - undefined instruction\n" + ; + +#include -- cgit