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e0112bc508
The 2 bytes 0xffff is too short for being a PowerPC instruction, resulting
in an error similar to:
/tmp/ccW8yjie.s: Assembler messages:
/tmp/ccW8yjie.s: Error: unaligned opcodes detected in executable segment
/tmp/ccW8yjie.s:223: Error: instruction address is not a multiple of 4
make[2]: *** [/tmp/ccyF4HIC.mk:17: /tmp/ccCKUFuF.ltrans5.ltrans.o] Error 1
Signed-off-by: WHR <msl0000023508@gmail.com>
44 lines
969 B
C
44 lines
969 B
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) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*/
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#include <command.h>
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static int do_sigsegv(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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u8 *ptr = NULL;
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*ptr = 0;
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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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#ifdef __powerpc__
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asm volatile (".long 0xffffffff\n");
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#else
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asm volatile (".word 0xffff\n");
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#endif
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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(sigsegv, CONFIG_SYS_MAXARGS, 1, do_sigsegv,
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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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" undefined - undefined instruction\n"
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" sigsegv - illegal memory access\n");
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#include <exception.h>
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