[mirror_ubuntu-bionic-kernel.git] / tools / testing / selftests / powerpc / alignment / copy_unaligned.c

/*
 * 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");
}
Commit	Line	Data
43750880 CS	1	/*
	2	* Copyright 2016, Chris Smart, IBM Corporation.
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version
	7	* 2 of the License, or (at your option) any later version.
	8	*
	9	* Calls to copy which are not 128-byte aligned should be caught
	10	* and sent a SIGBUS.
	11	*
	12	*/
	13
	14	#include <string.h>
	15	#include <unistd.h>
	16	#include "utils.h"
	17	#include "instructions.h"
	18	#include "copy_paste_unaligned_common.h"
	19
	20	unsigned int expected_instruction = PPC_INST_COPY;
	21	unsigned int instruction_mask = 0xfc0007fe;
	22
	23	int test_copy_unaligned(void)
	24	{
	25	/* Only run this test on a P9 or later */
	26	SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00));
	27
	28	/* Register our signal handler with SIGBUS */
	29	setup_signal_handler();
	30
	31	/* +1 makes buf unaligned */
	32	copy(cacheline_buf+1);
	33
	34	/* We should not get here */
	35	return 1;
	36	}
	37
	38	int main(int argc, char *argv[])
	39	{
	40	return test_harness(test_copy_unaligned, "test_copy_unaligned");
	41	}