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b85ecb276b
After adding the U_BOOT_LONGHELP macro some new commands came in still that were not making use if it. Switch these cases over and in a few places add missing newlines as well. Signed-off-by: Tom Rini <trini@konsulko.com>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* The 'exception' command can be used for testing exception handling.
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*
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* Copyright (c) 2018, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*/
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#include <command.h>
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static int do_unaligned(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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/*
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* The LDRD instruction requires the data source to be four byte aligned
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* even if strict alignment fault checking is disabled in the system
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* control register.
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*/
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asm volatile (
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"MOV r5, sp\n"
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"ADD r5, #1\n"
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"LDRD r6, r7, [r5]\n");
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return CMD_RET_FAILURE;
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}
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static int do_breakpoint(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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asm volatile ("BKPT #123\n");
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return CMD_RET_FAILURE;
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}
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static int do_undefined(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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/*
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* 0xe7f...f. is undefined in ARM mode
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* 0xde.. is undefined in Thumb mode
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*/
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asm volatile (".word 0xe7f7defb\n");
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return CMD_RET_FAILURE;
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}
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static struct cmd_tbl cmd_sub[] = {
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U_BOOT_CMD_MKENT(breakpoint, CONFIG_SYS_MAXARGS, 1, do_breakpoint,
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"", ""),
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U_BOOT_CMD_MKENT(unaligned, CONFIG_SYS_MAXARGS, 1, do_unaligned,
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"", ""),
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U_BOOT_CMD_MKENT(undefined, CONFIG_SYS_MAXARGS, 1, do_undefined,
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"", ""),
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};
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U_BOOT_LONGHELP(exception,
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"<ex>\n"
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" The following exceptions are available:\n"
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" breakpoint - prefetch abort\n"
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" unaligned - data abort\n"
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" undefined - undefined instruction\n");
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#include <exception.h>
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