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  *   ˆl–Ãa¾”ji?u@?pÜŠbÑ¿Àƒq÷Ü_†I|¥+ÄÅ T    /*
 * Portions Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * Portions Copyright (C) 2001 Nominum, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef ISCCC_UTIL_H
#define ISCCC_UTIL_H 1

#include <inttypes.h>

#include <isc/util.h>

/*! \file isccc/util.h
 * \brief
 * Macros for dealing with unaligned numbers.
 *
 * \note no side effects are allowed when invoking these macros!
 */

#define GET8(v, w)      \
	do {            \
		v = *w; \
		w++;    \
	} while (0)

#define GET16(v, w)                          \
	do {                                 \
		v = (unsigned int)w[0] << 8; \
		v |= (unsigned int)w[1];     \
		w += 2;                      \
	} while (0)

#define GET24(v, w)                           \
	do {                                  \
		v = (unsigned int)w[0] << 16; \
		v |= (unsigned int)w[1] << 8; \
		v |= (unsigned int)w[2];      \
		w += 3;                       \
	} while (0)

#define GET32(v, w)                            \
	do {                                   \
		v = (unsigned int)w[0] << 24;  \
		v |= (unsigned int)w[1] << 16; \
		v |= (unsigned int)w[2] << 8;  \
		v |= (unsigned int)w[3];       \
		w += 4;                        \
	} while (0)

#define GET64(v, w)                        \
	do {                               \
		v = (uint64_t)w[0] << 56;  \
		v |= (uint64_t)w[1] << 48; \
		v |= (uint64_t)w[2] << 40; \
		v |= (uint64_t)w[3] << 32; \
		v |= (uint64_t)w[4] << 24; \
		v |= (uint64_t)w[5] << 16; \
		v |= (uint64_t)w[6] << 8;  \
		v |= (uint64_t)w[7];       \
		w += 8;                    \
	} while (0)

#define GETC16(v, w, d)                      \
	do {                                 \
		GET8(v, w);                  \
		if (v == 0) {                \
			d = ISCCC_TRUE;      \
		} else {                     \
			d = ISCCC_FALSE;     \
			if (v == 255)        \
				GET16(v, w); \
		}                            \
	} while (0)

#define GETC32(v, w)                  \
	do {                          \
		GET24(v, w);          \
		if (v == 0xffffffu) { \
			GET32(v, w);  \
		}                     \
	} while (0)

#define GET_OFFSET(v, w) GET32(v, w)

#define GET_MEM(v, c, w)          \
	do {                      \
		memmove(v, w, c); \
		w += c;           \
	} while (0)

#define GET_TYPE(v, w)                                                        \
	do {                                                                  \
		GET8(v, w);                                                   \
		if (v > 127) {                                                \
			if (v < 255) {                                        \
				v = ((v & 0x7f) << 16) | ISCCC_RDATATYPE_SIG; \
			} else {                                              \
				GET32(v, w);                                  \
			}                                                     \
		}                                                             \
	} while (0)

#define PUT8(v, w)                      \
	do {                            \
		*w = (v & 0x000000ffU); \
		w++;