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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2018-12-26 17:20:35 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-04-22 12:06:39 -0400 |
| commit | dab8788a8cadaa18a44001f98fa959fc672fff4f (patch) | |
| tree | 2ede1f0e809092149aaa422970fe39721ed787b0 /cmd/x86 | |
| parent | c986aa624b6a0a627f029b44945b60979e25d109 (diff) | |
| download | u-boot-dab8788a8cadaa18a44001f98fa959fc672fff4f.tar.gz u-boot-dab8788a8cadaa18a44001f98fa959fc672fff4f.tar.bz2 u-boot-dab8788a8cadaa18a44001f98fa959fc672fff4f.zip | |
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 <xypron.glpk@gmx.de>
Diffstat (limited to 'cmd/x86')
| -rw-r--r-- | cmd/x86/Makefile | 1 | ||||
| -rw-r--r-- | cmd/x86/exception.c | 29 |
2 files changed, 30 insertions, 0 deletions
diff --git a/cmd/x86/Makefile b/cmd/x86/Makefile index bcc6d06582..707161440d 100644 --- a/cmd/x86/Makefile +++ b/cmd/x86/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ obj-y += mtrr.o +obj-$(CONFIG_CMD_EXCEPTION) += exception.o obj-$(CONFIG_HAVE_FSP) += fsp.o diff --git a/cmd/x86/exception.c b/cmd/x86/exception.c new file mode 100644 index 0000000000..ade1e2ea92 --- /dev/null +++ b/cmd/x86/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 <xypron.glpk@gmx.de> + */ + +#include <common.h> +#include <command.h> + +static int do_undefined(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + asm volatile (".word 0xffff\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[] = + "<ex>\n" + " The following exceptions are available:\n" + " undefined - undefined instruction\n" + ; + +#include <exception.h> |