xref: /optee_os/core/tee/uuid.c (revision 1bb929836182ecb96d2d9d268daa807c67596396)

// SPDX-License-Identifier: BSD-2-Clause
/*
 * Copyright (c) 2016, Linaro Limited
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 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 HOLDER 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 <string.h>
#include <tee/uuid.h>
#include <util.h>

void tee_uuid_to_octets(uint8_t *d, const TEE_UUID *s)
{
	d[0] = s->timeLow >> 24;
	d[1] = s->timeLow >> 16;
	d[2] = s->timeLow >> 8;
	d[3] = s->timeLow;
	d[4] = s->timeMid >> 8;
	d[5] = s->timeMid;
	d[6] = s->timeHiAndVersion >> 8;
	d[7] = s->timeHiAndVersion;
	memcpy(d + 8, s->clockSeqAndNode, sizeof(s->clockSeqAndNode));
}

void tee_uuid_from_octets(TEE_UUID *d, const uint8_t *s)
{
	d->timeLow = SHIFT_U32(s[0], 24) | SHIFT_U32(s[1], 16) |
		     SHIFT_U32(s[2], 8) | s[3];
	d->timeMid = SHIFT_U32(s[4], 8) | s[5];
	d->timeHiAndVersion = SHIFT_U32(s[6], 8) | s[7];
	memcpy(d->clockSeqAndNode, s + 8, sizeof(d->clockSeqAndNode));
}