/*

 * Copyright (c) 2013-2017, 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_retstack.h"

#include "intel-pt.h"

static struct ptunit_result init(void)

{

	struct pt_retstack retstack;

	int status;

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

	pt_retstack_init(&retstack);

	status = pt_retstack_is_empty(&retstack);

	ptu_int_ne(status, 0);

	return ptu_passed();

}

static struct ptunit_result init_null(void)

{

	pt_retstack_init(NULL);

	return ptu_passed();

}

static struct ptunit_result query(void)

{

	struct pt_retstack retstack;

	uint64_t ip;

	int status;

	pt_retstack_init(&retstack);

	status = pt_retstack_push(&retstack, 0x42ull);

	ptu_int_eq(status, 0);

	status = pt_retstack_is_empty(&retstack);

	ptu_int_eq(status, 0);

	status = pt_retstack_pop(&retstack, &ip);

	ptu_int_eq(status, 0);

	ptu_uint_eq(ip, 0x42ull);

	status = pt_retstack_is_empty(&retstack);

	ptu_int_ne(status, 0);

	return ptu_passed();

}

static struct ptunit_result query_empty(void)

{

	struct pt_retstack retstack;

	uint64_t ip;

	int status;

	pt_retstack_init(&retstack);

	ip = 0x42ull;

	status = pt_retstack_pop(&retstack, &ip);

	ptu_int_eq(status, -pte_retstack_empty);

	ptu_uint_eq(ip, 0x42ull);

	return ptu_passed();

}

static struct ptunit_result query_null(void)

{

	uint64_t ip;

	int status;

	ip = 0x42ull;

	status = pt_retstack_pop(NULL, &ip);

	ptu_int_eq(status, -pte_invalid);

	ptu_uint_eq(ip, 0x42ull);

	return ptu_passed();

}

static struct ptunit_result pop(void)

{

	struct pt_retstack retstack;

	int status;

	pt_retstack_init(&retstack);

	status = pt_retstack_push(&retstack, 0x42ull);

	ptu_int_eq(status, 0);

	status = pt_retstack_is_empty(&retstack);

	ptu_int_eq(status, 0);

	status = pt_retstack_pop(&retstack, NULL);

	ptu_int_eq(status, 0);

	status = pt_retstack_is_empty(&retstack);

	ptu_int_ne(status, 0);

	return ptu_passed();

}

static struct ptunit_result pop_empty(void)

{

	struct pt_retstack retstack;

	int status;

	pt_retstack_init(&retstack);

	status = pt_retstack_pop(&retstack, NULL);

	ptu_int_eq(status, -pte_retstack_empty);

	return ptu_passed();

}

static struct ptunit_result pop_null(void)

{

	int status;

	status = pt_retstack_pop(NULL, NULL);

	ptu_int_eq(status, -pte_invalid);

	return ptu_passed();

}

static struct ptunit_result full(void)

{

	struct pt_retstack retstack;

	uint64_t ip, idx;

	int status;

	pt_retstack_init(&retstack);

	for (idx = 0; idx < pt_retstack_size; ++idx) {

		status = pt_retstack_push(&retstack, idx);

		ptu_int_eq(status, 0);

	}

	status = pt_retstack_is_empty(&retstack);

	ptu_int_eq(status, 0);

	for (idx = pt_retstack_size; idx > 0;) {

		idx -= 1;

		status = pt_retstack_pop(&retstack, &ip);

		ptu_int_eq(status, 0);

		ptu_uint_eq(ip, idx);

	}

	status = pt_retstack_is_empty(&retstack);

	ptu_int_ne(status, 0);

	return ptu_passed();

}

static struct ptunit_result overflow(void)

{

	struct pt_retstack retstack;

	uint64_t ip, idx;

	int status;

	pt_retstack_init(&retstack);

	for (idx = 0; idx <= pt_retstack_size; ++idx) {

		status = pt_retstack_push(&retstack, idx);

		ptu_int_eq(status, 0);

	}

	status = pt_retstack_is_empty(&retstack);

	ptu_int_eq(status, 0);

	for (idx = pt_retstack_size; idx > 0; --idx) {

		status = pt_retstack_pop(&retstack, &ip);

		ptu_int_eq(status, 0);

		ptu_uint_eq(ip, idx);

	}

	status = pt_retstack_is_empty(&retstack);

	ptu_int_ne(status, 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, query);

	ptu_run(suite, query_empty);

	ptu_run(suite, query_null);

	ptu_run(suite, pop);

	ptu_run(suite, pop_empty);

	ptu_run(suite, pop_null);

	ptu_run(suite, full);

	ptu_run(suite, overflow);

	ptunit_report(&suite);

	return suite.nr_fails;

}