diff options
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 /include/exception.h | |
parent | c986aa624b6a0a627f029b44945b60979e25d109 (diff) |
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 'include/exception.h')
-rw-r--r-- | include/exception.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/exception.h b/include/exception.h new file mode 100644 index 0000000000..fc02490223 --- /dev/null +++ b/include/exception.h @@ -0,0 +1,58 @@ +/* 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> + */ + +static int do_exception(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + cmd_tbl_t *cp; + + if (argc != 2) + return CMD_RET_USAGE; + + /* drop sub-command parameter */ + argc--; + argv++; + + cp = find_cmd_tbl(argv[0], cmd_sub, ARRAY_SIZE(cmd_sub)); + + if (cp) + return cp->cmd(cmdtp, flag, argc, argv); + + return CMD_RET_USAGE; +} + +static int exception_complete(int argc, char * const argv[], char last_char, + int maxv, char *cmdv[]) +{ + int len = 0; + int i = 0; + cmd_tbl_t *cmdtp; + + switch (argc) { + case 1: + break; + case 2: + len = strlen(argv[1]); + break; + default: + return 0; + } + for (cmdtp = cmd_sub; cmdtp != cmd_sub + ARRAY_SIZE(cmd_sub); cmdtp++) { + if (i >= maxv - 1) + return i; + if (!strncmp(argv[1], cmdtp->name, len)) + cmdv[i++] = cmdtp->name; + } + cmdv[i] = NULL; + return i; +} + +U_BOOT_CMD_COMPLETE( + exception, 2, 0, do_exception, + "Forces an exception to occur", + exception_help_text, exception_complete +); |