/*

 * 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 "intel-pt.h"

#include <string.h>

#include <stddef.h>

int pt_cpu_errata(struct pt_errata *errata, const struct pt_cpu *cpu)

{

	if (!errata || !cpu)

		return -pte_invalid;

	memset(errata, 0, sizeof(*errata));

	/* We don't know about others. */

	if (cpu->vendor != pcv_intel)

		return 0;

	switch (cpu->family) {

	case 0x6:

		switch (cpu->model) {

		case 0x3d:

		case 0x47:

		case 0x4f:

		case 0x56:

			errata->bdm70 = 1;

			errata->bdm64 = 1;

			break;

		case 0x4e:

		case 0x5e:

			errata->bdm70 = 1;

			errata->skd007 = 1;

			errata->skd022 = 1;

			errata->skd010 = 1;

			break;

		}

		break;

	}

	return 0;

}

int pt_config_from_user(struct pt_config *config,

			const struct pt_config *uconfig)

{

	uint8_t *begin, *end;

	size_t size;

	if (!config)

		return -pte_internal;

	if (!uconfig)

		return -pte_invalid;

	size = uconfig->size;

	if (size < offsetof(struct pt_config, decode))

		return -pte_bad_config;

	begin = uconfig->begin;

	end = uconfig->end;

	if (!begin || !end || end < begin)

		return -pte_bad_config;

	/* Ignore fields in the user's configuration we don't know; zero out

	 * fields the user didn't know about.

	 */

	if (sizeof(*config) <= size)

		size = sizeof(*config);

	else

		memset(((uint8_t *) config) + size, 0, sizeof(*config) - size);

	/* Copy (portions of) the user's configuration. */

	memcpy(config, uconfig, size);

	/* We copied user's size - fix it. */

	config->size = size;

	return 0;

}