linux/tools/testing/selftests/powerpc/alignment/copy_unaligned.c

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/*
* Copyright 2016, Chris Smart, IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Calls to copy which are not 128-byte aligned should be caught
* and sent a SIGBUS.
*
*/
#include <string.h>
#include <unistd.h>
#include "utils.h"
#include "instructions.h"
#include "copy_paste_unaligned_common.h"
unsigned int expected_instruction = PPC_INST_COPY;
unsigned int instruction_mask = 0xfc0007fe;
int test_copy_unaligned(void)
{
/* Only run this test on a P9 or later */
SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00));
/* Register our signal handler with SIGBUS */
setup_signal_handler();
/* +1 makes buf unaligned */
copy(cacheline_buf+1);
/* We should not get here */
return 1;
}
int main(int argc, char *argv[])
{
return test_harness(test_copy_unaligned, "test_copy_unaligned");
}