libipt/test/src/ptunit-last_ip.c - third_party/processor-trace - Git at Google

 /*
  * Copyright (c) 2013-2019, Intel Corporation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  * Redistributions of source code must retain the above copyright notice,
  *    this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  *  * Neither the name of Intel Corporation nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */

 #include "ptunit.h"

 #include "pt_last_ip.h"

 #include "intel-pt.h"

 #include <string.h>


 static struct ptunit_result init(void)
 {
 	struct pt_last_ip last_ip;

 	memset(&last_ip, 0xcd, sizeof(last_ip));

 	pt_last_ip_init(&last_ip);

 	ptu_uint_eq(last_ip.ip, 0ull);
 	ptu_uint_eq(last_ip.have_ip, 0);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 static struct ptunit_result init_null(void)
 {
 	pt_last_ip_init(NULL);

 	return ptu_passed();
 }

 static struct ptunit_result status_initial(void)
 {
 	struct pt_last_ip last_ip;
 	int errcode;

 	pt_last_ip_init(&last_ip);

 	errcode = pt_last_ip_query(NULL, &last_ip);
 	ptu_int_eq(errcode, -pte_noip);

 	return ptu_passed();
 }

 static struct ptunit_result status(void)
 {
 	struct pt_last_ip last_ip;
 	int errcode;

 	last_ip.have_ip = 1;
 	last_ip.suppressed = 0;

 	errcode = pt_last_ip_query(NULL, &last_ip);
 	ptu_int_eq(errcode, 0);

 	return ptu_passed();
 }

 static struct ptunit_result status_null(void)
 {
 	int errcode;

 	errcode = pt_last_ip_query(NULL, NULL);
 	ptu_int_eq(errcode, -pte_internal);

 	return ptu_passed();
 }

 static struct ptunit_result status_noip(void)
 {
 	struct pt_last_ip last_ip;
 	int errcode;

 	last_ip.have_ip = 0;
 	last_ip.suppressed = 0;

 	errcode = pt_last_ip_query(NULL, &last_ip);
 	ptu_int_eq(errcode, -pte_noip);

 	return ptu_passed();
 }

 static struct ptunit_result status_suppressed(void)
 {
 	struct pt_last_ip last_ip;
 	int errcode;

 	last_ip.have_ip = 1;
 	last_ip.suppressed = 1;

 	errcode = pt_last_ip_query(NULL, &last_ip);
 	ptu_int_eq(errcode, -pte_ip_suppressed);

 	return ptu_passed();
 }

 static struct ptunit_result query_initial(void)
 {
 	struct pt_last_ip last_ip;
 	uint64_t ip;
 	int errcode;

 	pt_last_ip_init(&last_ip);

 	errcode = pt_last_ip_query(&ip, &last_ip);
 	ptu_int_eq(errcode, -pte_noip);

 	return ptu_passed();
 }

 static struct ptunit_result query(void)
 {
 	struct pt_last_ip last_ip;
 	uint64_t ip, exp = 42ull;
 	int errcode;

 	last_ip.ip = 42ull;
 	last_ip.have_ip = 1;
 	last_ip.suppressed = 0;

 	errcode = pt_last_ip_query(&ip, &last_ip);
 	ptu_int_eq(errcode, 0);
 	ptu_uint_eq(last_ip.ip, exp);

 	return ptu_passed();
 }

 static struct ptunit_result query_null(void)
 {
 	uint64_t ip = 13ull;
 	int errcode;

 	errcode = pt_last_ip_query(&ip, NULL);
 	ptu_int_eq(errcode, -pte_internal);
 	ptu_uint_eq(ip, 13ull);

 	return ptu_passed();
 }

 static struct ptunit_result query_noip(void)
 {
 	struct pt_last_ip last_ip;
 	uint64_t ip = 13ull;
 	int errcode;

 	last_ip.ip = 42ull;
 	last_ip.have_ip = 0;
 	last_ip.suppressed = 0;

 	errcode = pt_last_ip_query(&ip, &last_ip);
 	ptu_int_eq(errcode, -pte_noip);
 	ptu_uint_eq(ip, 0ull);

 	return ptu_passed();
 }

 static struct ptunit_result query_suppressed(void)
 {
 	struct pt_last_ip last_ip;
 	uint64_t ip = 13ull;
 	int errcode;

 	last_ip.ip = 42ull;
 	last_ip.have_ip = 1;
 	last_ip.suppressed = 1;

 	errcode = pt_last_ip_query(&ip, &last_ip);
 	ptu_int_eq(errcode, -pte_ip_suppressed);
 	ptu_uint_eq(ip, 0ull);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_suppressed(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	struct pt_packet_ip packet;
 	int errcode;

 	last_ip.ip = 42ull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	packet.ipc = pt_ipc_suppressed;
 	packet.ip = 13ull;

 	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
 	ptu_int_eq(errcode, 0);
 	ptu_uint_eq(last_ip.ip, 42ull);
 	ptu_uint_eq(last_ip.have_ip, have_ip);
 	ptu_uint_eq(last_ip.suppressed, 1);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_upd16(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	struct pt_packet_ip packet;
 	int errcode;

 	last_ip.ip = 0xff0042ull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	packet.ipc = pt_ipc_update_16;
 	packet.ip = 0xccc013ull;

 	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
 	ptu_int_eq(errcode, 0);
 	ptu_uint_eq(last_ip.ip, 0xffc013ull);
 	ptu_uint_eq(last_ip.have_ip, 1);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_upd32(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	struct pt_packet_ip packet;
 	int errcode;

 	last_ip.ip = 0xff00000420ull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	packet.ipc = pt_ipc_update_32;
 	packet.ip = 0xcc0000c013ull;

 	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
 	ptu_int_eq(errcode, 0);
 	ptu_uint_eq(last_ip.ip, 0xff0000c013ull);
 	ptu_uint_eq(last_ip.have_ip, 1);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_sext48(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	struct pt_packet_ip packet;
 	int errcode;

 	last_ip.ip = 0x7fffffffffffffffull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	packet.ipc = pt_ipc_sext_48;
 	packet.ip = 0xff00000000ffull;

 	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
 	ptu_int_eq(errcode, 0);
 	ptu_uint_eq(last_ip.ip, 0xffffff00000000ffull);
 	ptu_uint_eq(last_ip.have_ip, 1);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_bad_packet(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	struct pt_packet_ip packet;
 	int errcode;

 	last_ip.ip = 0x7fffffffffffffffull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	packet.ipc = (enum pt_ip_compression) 0xff;
 	packet.ip = 0ull;

 	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
 	ptu_int_eq(errcode, -pte_bad_packet);
 	ptu_uint_eq(last_ip.ip, 0x7fffffffffffffffull);
 	ptu_uint_eq(last_ip.have_ip, have_ip);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_null_ip(void)
 {
 	struct pt_packet_ip packet;
 	int errcode;

 	errcode = pt_last_ip_update_ip(NULL, &packet, NULL);
 	ptu_int_eq(errcode, -pte_internal);

 	return ptu_passed();
 }

 static struct ptunit_result update_ip_null_packet(uint32_t have_ip)
 {
 	struct pt_last_ip last_ip;
 	int errcode;

 	last_ip.ip = 0x7fffffffffffffffull;
 	last_ip.have_ip = have_ip;
 	last_ip.suppressed = 0;

 	errcode = pt_last_ip_update_ip(&last_ip, NULL, NULL);
 	ptu_int_eq(errcode, -pte_internal);
 	ptu_uint_eq(last_ip.ip, 0x7fffffffffffffffull);
 	ptu_uint_eq(last_ip.have_ip, have_ip);
 	ptu_uint_eq(last_ip.suppressed, 0);

 	return ptu_passed();
 }

 int main(int argc, char **argv)
 {
 	struct ptunit_suite suite;

 	suite = ptunit_mk_suite(argc, argv);

 	ptu_run(suite, init);
 	ptu_run(suite, init_null);
 	ptu_run(suite, status_initial);
 	ptu_run(suite, status);
 	ptu_run(suite, status_null);
 	ptu_run(suite, status_noip);
 	ptu_run(suite, status_suppressed);
 	ptu_run(suite, query_initial);
 	ptu_run(suite, query);
 	ptu_run(suite, query_null);
 	ptu_run(suite, query_noip);
 	ptu_run(suite, query_suppressed);
 	ptu_run_p(suite, update_ip_suppressed, 0);
 	ptu_run_p(suite, update_ip_suppressed, 1);
 	ptu_run_p(suite, update_ip_upd16, 0);
 	ptu_run_p(suite, update_ip_upd16, 1);
 	ptu_run_p(suite, update_ip_upd32, 0);
 	ptu_run_p(suite, update_ip_upd32, 1);
 	ptu_run_p(suite, update_ip_sext48, 0);
 	ptu_run_p(suite, update_ip_sext48, 1);
 	ptu_run_p(suite, update_ip_bad_packet, 0);
 	ptu_run_p(suite, update_ip_bad_packet, 1);
 	ptu_run(suite, update_ip_null_ip);
 	ptu_run_p(suite, update_ip_null_packet, 0);
 	ptu_run_p(suite, update_ip_null_packet, 1);

 	return ptunit_report(&suite);
 }
	/*
	* Copyright (c) 2013-2019, Intel Corporation
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* * Redistributions of source code must retain the above copyright notice,
	* this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above copyright notice,
	* this list of conditions and the following disclaimer in the documentation
	* and/or other materials provided with the distribution.
	* * Neither the name of Intel Corporation nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "ptunit.h"

	#include "pt_last_ip.h"

	#include "intel-pt.h"

	#include <string.h>


	static struct ptunit_result init(void)
	{
	struct pt_last_ip last_ip;

	memset(&last_ip, 0xcd, sizeof(last_ip));

	pt_last_ip_init(&last_ip);

	ptu_uint_eq(last_ip.ip, 0ull);
	ptu_uint_eq(last_ip.have_ip, 0);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	static struct ptunit_result init_null(void)
	{
	pt_last_ip_init(NULL);

	return ptu_passed();
	}

	static struct ptunit_result status_initial(void)
	{
	struct pt_last_ip last_ip;
	int errcode;

	pt_last_ip_init(&last_ip);

	errcode = pt_last_ip_query(NULL, &last_ip);
	ptu_int_eq(errcode, -pte_noip);

	return ptu_passed();
	}

	static struct ptunit_result status(void)
	{
	struct pt_last_ip last_ip;
	int errcode;

	last_ip.have_ip = 1;
	last_ip.suppressed = 0;

	errcode = pt_last_ip_query(NULL, &last_ip);
	ptu_int_eq(errcode, 0);

	return ptu_passed();
	}

	static struct ptunit_result status_null(void)
	{
	int errcode;

	errcode = pt_last_ip_query(NULL, NULL);
	ptu_int_eq(errcode, -pte_internal);

	return ptu_passed();
	}

	static struct ptunit_result status_noip(void)
	{
	struct pt_last_ip last_ip;
	int errcode;

	last_ip.have_ip = 0;
	last_ip.suppressed = 0;

	errcode = pt_last_ip_query(NULL, &last_ip);
	ptu_int_eq(errcode, -pte_noip);

	return ptu_passed();
	}

	static struct ptunit_result status_suppressed(void)
	{
	struct pt_last_ip last_ip;
	int errcode;

	last_ip.have_ip = 1;
	last_ip.suppressed = 1;

	errcode = pt_last_ip_query(NULL, &last_ip);
	ptu_int_eq(errcode, -pte_ip_suppressed);

	return ptu_passed();
	}

	static struct ptunit_result query_initial(void)
	{
	struct pt_last_ip last_ip;
	uint64_t ip;
	int errcode;

	pt_last_ip_init(&last_ip);

	errcode = pt_last_ip_query(&ip, &last_ip);
	ptu_int_eq(errcode, -pte_noip);

	return ptu_passed();
	}

	static struct ptunit_result query(void)
	{
	struct pt_last_ip last_ip;
	uint64_t ip, exp = 42ull;
	int errcode;

	last_ip.ip = 42ull;
	last_ip.have_ip = 1;
	last_ip.suppressed = 0;

	errcode = pt_last_ip_query(&ip, &last_ip);
	ptu_int_eq(errcode, 0);
	ptu_uint_eq(last_ip.ip, exp);

	return ptu_passed();
	}

	static struct ptunit_result query_null(void)
	{
	uint64_t ip = 13ull;
	int errcode;

	errcode = pt_last_ip_query(&ip, NULL);
	ptu_int_eq(errcode, -pte_internal);
	ptu_uint_eq(ip, 13ull);

	return ptu_passed();
	}

	static struct ptunit_result query_noip(void)
	{
	struct pt_last_ip last_ip;
	uint64_t ip = 13ull;
	int errcode;

	last_ip.ip = 42ull;
	last_ip.have_ip = 0;
	last_ip.suppressed = 0;

	errcode = pt_last_ip_query(&ip, &last_ip);
	ptu_int_eq(errcode, -pte_noip);
	ptu_uint_eq(ip, 0ull);

	return ptu_passed();
	}

	static struct ptunit_result query_suppressed(void)
	{
	struct pt_last_ip last_ip;
	uint64_t ip = 13ull;
	int errcode;

	last_ip.ip = 42ull;
	last_ip.have_ip = 1;
	last_ip.suppressed = 1;

	errcode = pt_last_ip_query(&ip, &last_ip);
	ptu_int_eq(errcode, -pte_ip_suppressed);
	ptu_uint_eq(ip, 0ull);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_suppressed(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	struct pt_packet_ip packet;
	int errcode;

	last_ip.ip = 42ull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	packet.ipc = pt_ipc_suppressed;
	packet.ip = 13ull;

	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
	ptu_int_eq(errcode, 0);
	ptu_uint_eq(last_ip.ip, 42ull);
	ptu_uint_eq(last_ip.have_ip, have_ip);
	ptu_uint_eq(last_ip.suppressed, 1);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_upd16(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	struct pt_packet_ip packet;
	int errcode;

	last_ip.ip = 0xff0042ull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	packet.ipc = pt_ipc_update_16;
	packet.ip = 0xccc013ull;

	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
	ptu_int_eq(errcode, 0);
	ptu_uint_eq(last_ip.ip, 0xffc013ull);
	ptu_uint_eq(last_ip.have_ip, 1);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_upd32(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	struct pt_packet_ip packet;
	int errcode;

	last_ip.ip = 0xff00000420ull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	packet.ipc = pt_ipc_update_32;
	packet.ip = 0xcc0000c013ull;

	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
	ptu_int_eq(errcode, 0);
	ptu_uint_eq(last_ip.ip, 0xff0000c013ull);
	ptu_uint_eq(last_ip.have_ip, 1);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_sext48(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	struct pt_packet_ip packet;
	int errcode;

	last_ip.ip = 0x7fffffffffffffffull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	packet.ipc = pt_ipc_sext_48;
	packet.ip = 0xff00000000ffull;

	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
	ptu_int_eq(errcode, 0);
	ptu_uint_eq(last_ip.ip, 0xffffff00000000ffull);
	ptu_uint_eq(last_ip.have_ip, 1);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_bad_packet(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	struct pt_packet_ip packet;
	int errcode;

	last_ip.ip = 0x7fffffffffffffffull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	packet.ipc = (enum pt_ip_compression) 0xff;
	packet.ip = 0ull;

	errcode = pt_last_ip_update_ip(&last_ip, &packet, NULL);
	ptu_int_eq(errcode, -pte_bad_packet);
	ptu_uint_eq(last_ip.ip, 0x7fffffffffffffffull);
	ptu_uint_eq(last_ip.have_ip, have_ip);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_null_ip(void)
	{
	struct pt_packet_ip packet;
	int errcode;

	errcode = pt_last_ip_update_ip(NULL, &packet, NULL);
	ptu_int_eq(errcode, -pte_internal);

	return ptu_passed();
	}

	static struct ptunit_result update_ip_null_packet(uint32_t have_ip)
	{
	struct pt_last_ip last_ip;
	int errcode;

	last_ip.ip = 0x7fffffffffffffffull;
	last_ip.have_ip = have_ip;
	last_ip.suppressed = 0;

	errcode = pt_last_ip_update_ip(&last_ip, NULL, NULL);
	ptu_int_eq(errcode, -pte_internal);
	ptu_uint_eq(last_ip.ip, 0x7fffffffffffffffull);
	ptu_uint_eq(last_ip.have_ip, have_ip);
	ptu_uint_eq(last_ip.suppressed, 0);

	return ptu_passed();
	}

	int main(int argc, char **argv)
	{
	struct ptunit_suite suite;

	suite = ptunit_mk_suite(argc, argv);

	ptu_run(suite, init);
	ptu_run(suite, init_null);
	ptu_run(suite, status_initial);
	ptu_run(suite, status);
	ptu_run(suite, status_null);
	ptu_run(suite, status_noip);
	ptu_run(suite, status_suppressed);
	ptu_run(suite, query_initial);
	ptu_run(suite, query);
	ptu_run(suite, query_null);
	ptu_run(suite, query_noip);
	ptu_run(suite, query_suppressed);
	ptu_run_p(suite, update_ip_suppressed, 0);
	ptu_run_p(suite, update_ip_suppressed, 1);
	ptu_run_p(suite, update_ip_upd16, 0);
	ptu_run_p(suite, update_ip_upd16, 1);
	ptu_run_p(suite, update_ip_upd32, 0);
	ptu_run_p(suite, update_ip_upd32, 1);
	ptu_run_p(suite, update_ip_sext48, 0);
	ptu_run_p(suite, update_ip_sext48, 1);
	ptu_run_p(suite, update_ip_bad_packet, 0);
	ptu_run_p(suite, update_ip_bad_packet, 1);
	ptu_run(suite, update_ip_null_ip);
	ptu_run_p(suite, update_ip_null_packet, 0);
	ptu_run_p(suite, update_ip_null_packet, 1);

	return ptunit_report(&suite);
	}