/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright Red Hat
 * Author: David Gibson <david@gibson.dropbear.id.au>
 *
 * Definitions used by both passt/pasta and other tools
 */

#ifndef COMMON_H
#define COMMON_H

#define VERSION_BLOB							       \
	VERSION "\n"							       \
	"Copyright Red Hat\n"						       \
	"GNU General Public License, version 2 or later\n"		       \
	"  <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>\n"	       \
	"This is free software: you are free to change and redistribute it.\n" \
	"There is NO WARRANTY, to the extent permitted by law.\n\n"

/* FPRINTF() intentionally silences cert-err33-c clang-tidy warnings */
#define FPRINTF(f, ...)	(void)fprintf(f, __VA_ARGS__)

#ifndef MIN
#define MIN(x, y)		(((x) < (y)) ? (x) : (y))
#endif
#ifndef MAX
#define MAX(x, y)		(((x) > (y)) ? (x) : (y))
#endif

#define BIT(n)			(1UL << (n))

#ifndef __bswap_constant_16
#define __bswap_constant_16(x)						\
	((uint16_t) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
#endif

#ifndef __bswap_constant_32
#define __bswap_constant_32(x)						\
	((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) |	\
	 (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
#endif

#ifndef __bswap_constant_32
#define __bswap_constant_32(x)						\
	((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) |	\
	 (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
#endif

#ifndef __bswap_constant_64
#define __bswap_constant_64(x) \
	((((x) & 0xff00000000000000ULL) >> 56) |			\
	 (((x) & 0x00ff000000000000ULL) >> 40) |			\
	 (((x) & 0x0000ff0000000000ULL) >> 24) |			\
	 (((x) & 0x000000ff00000000ULL) >> 8)  |			\
	 (((x) & 0x00000000ff000000ULL) << 8)  |			\
	 (((x) & 0x0000000000ff0000ULL) << 24) |			\
	 (((x) & 0x000000000000ff00ULL) << 40) |			\
	 (((x) & 0x00000000000000ffULL) << 56))
#endif

#if __BYTE_ORDER == __BIG_ENDIAN
#define	htons_constant(x)	(x)
#define	htonl_constant(x)	(x)
#define htonll_constant(x)	(x)
#define	ntohs_constant(x)	(x)
#define	ntohl_constant(x)	(x)
#define ntohll_constant(x)	(x)
#else
#define	htons_constant(x)	(__bswap_constant_16(x))
#define	htonl_constant(x)	(__bswap_constant_32(x))
#define	htonll_constant(x)	(__bswap_constant_64(x))
#define	ntohs_constant(x)	(__bswap_constant_16(x))
#define	ntohl_constant(x)	(__bswap_constant_32(x))
#define	ntohll_constant(x)	(__bswap_constant_64(x))
#endif

#define ntohll(x)		(be64toh((x)))
#define htonll(x)		(htobe64((x)))

#endif /* _COMMON_H */