/*
 * SPDX-FileCopyrightText: 2022 Unisoc (Shanghai) Technologies Co., Ltd
 * SPDX-License-Identifier: LicenseRef-Unisoc-General-1.0
 *
 * Copyright 2022 Unisoc (Shanghai) Technologies Co., Ltd.
 *
 * Licensed under the Unisoc General Software License, version 1.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.unisoc.com/en_us/license/UNISOC_GENERAL_LICENSE_V1.0-EN_US
 *
 * Software distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 * See the Unisoc General Software License, version 1.0 for more details.
 */

#include <string.h>
#include <uuid.h>


#define SHIFT_U32(v, shift)	((uint32_t)(v) << (shift))


void tee_uuid_to_octets(uint8_t *d, const gptee_uuid_t *s)
{
	d[0] = s->time_low >> 24;
	d[1] = s->time_low >> 16;
	d[2] = s->time_low >> 8;
	d[3] = s->time_low;
	d[4] = s->time_mid >> 8;
	d[5] = s->time_mid;
	d[6] = s->time_hi_and_version >> 8;
	d[7] = s->time_hi_and_version;
	memcpy(d + 8, s->clock_seq_and_node, sizeof(s->clock_seq_and_node));
}


void tee_uuid_from_octets(gptee_uuid_t *d, const uint8_t *s)
{
	d->time_low = SHIFT_U32(s[0], 24) | SHIFT_U32(s[1], 16) |
		     SHIFT_U32(s[2], 8) | s[3];
	d->time_mid = SHIFT_U32(s[4], 8) | s[5];
	d->time_hi_and_version = SHIFT_U32(s[6], 8) | s[7];
	memcpy(d->clock_seq_and_node, s + 8, sizeof(d->clock_seq_and_node));
}