u-boot/include/exception.h
Heinrich Schuchardt dab8788a8c 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>
2019-04-22 12:06:39 -04:00

59 lines
1.1 KiB
C

/* 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
);