1/*-
 2 * Copyright (c) 2021 M. Warner Losh <imp@FreeBSD.org>
 3 *
 4 * SPDX-License-Identifier: BSD-2-Clause
 5 */
 6
 7/*
 8 * A mostly Linux/glibc-compatible endian.h
 9 */
10
11#ifndef _ENDIAN_H_
12#define _ENDIAN_H_
13
14/*
15 * FreeBSD's sys/_endian.h is very close to the interface provided on Linux by
16 * glibc's endian.h.
17 */
18#include <sys/_endian.h>
19
20/*
21 * glibc uses double underscore for these symbols. Define these unconditionally.
22 * The compiler defines __BYTE_ORDER__ these days, so we don't do anything
23 * with that since sys/endian.h defines _BYTE_ORDER based on it.
24 */
25#define __BIG_ENDIAN		_BIG_ENDIAN
26#define __BYTE_ORDER		_BYTE_ORDER
27#define __LITTLE_ENDIAN		_LITTLE_ENDIAN
28#define __PDP_ENDIAN		_PDP_ENDIAN
29
30/*
31 * FreeBSD's sys/endian.h and machine/endian.h doesn't define a separate
32 * byte order for floats. Use the host non-float byte order.
33 */
34#define __FLOAT_WORD_ORDER	_BYTE_ORDER
35
36/*
37 * We don't define BIG_ENDI, LITTLE_ENDI, HIGH_HALF and LOW_HALF macros that
38 * glibc's endian.h defines since those appear to be internal to glibc.
39 * We also don't try to emulate the various helper macros that glibc uses to
40 * limit namespace visibility.
41 */
42
43#endif /* _ENDIAN_H_ */