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76a2110b47
Introduce <machine/_endian.h> to let target based customization of <machine/endian.h> via * _LITTLE_ENDIAN, * _BIG_ENDIAN, * _PDP_ENDIAN, and * _BYTE_ORDER. defines. Add definitions expected by FreeBSD to <machine/endian.h> like * _QUAD_HIGHWORD, * _QUAD_LOWWORD, * __bswap16(), * __bswap32(), * __bswap64(), * __htonl(), * __htons(), * __ntohl(), and * __ntohs(). Also, if __BSD_VISIBLE * LITTLE_ENDIAN, * BIG_ENDIAN, * PDP_ENDIAN, and * BYTE_ORDER. Targets that define __machine_host_to_from_network_defined in <machine/_endian.h> must provide their own implementation of * __htonl(), * __htons(), * __ntohl(), and * __ntohs(), otherwise a default implementation is provided by <machine/endian.h>. In case of GCC defines to builtins are used. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
86 lines
1.6 KiB
C
86 lines
1.6 KiB
C
/* endian.h
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Copyright 2005, 2010, 2011 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _ENDIAN_H_
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#define _ENDIAN_H_
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#include <sys/config.h>
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#include <machine/endian.h>
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/*#ifdef __USE_BSD*/
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# ifndef LITTLE_ENDIAN
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# define LITTLE_ENDIAN __LITTLE_ENDIAN
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# endif
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# ifndef BIG_ENDIAN
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# define BIG_ENDIAN __BIG_ENDIAN
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# endif
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# ifndef PDP_ENDIAN
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# define PDP_ENDIAN __PDP_ENDIAN
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# endif
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# ifndef BYTE_ORDER
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# define BYTE_ORDER __BYTE_ORDER
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# endif
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/*#endif*/
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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# define __LONG_LONG_PAIR(HI, LO) LO, HI
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#elif __BYTE_ORDER == __BIG_ENDIAN
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# define __LONG_LONG_PAIR(HI, LO) HI, LO
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#endif
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#if __BSD_VISIBLE
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#include <byteswap.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define htobe16(x) bswap_16(x)
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#define htobe32(x) bswap_32(x)
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#define htobe64(x) bswap_64(x)
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#define be16toh(x) bswap_16(x)
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#define be32toh(x) bswap_32(x)
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#define be64toh(x) bswap_64(x)
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#define htole16(x) (x)
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#define htole32(x) (x)
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#define htole64(x) (x)
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#define le16toh(x) (x)
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#define le32toh(x) (x)
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#define le64toh(x) (x)
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#endif /*__BYTE_ORDER == __LITTLE_ENDIAN*/
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define htobe16(x) (x)
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#define htobe32(x) (x)
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#define htobe64(x) (x)
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#define be16toh(x) (x)
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#define be32toh(x) (x)
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#define be64toh(x) (x)
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#define htole16(x) bswap_16(x)
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#define htole32(x) bswap_32(x)
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#define htole64(x) bswap_64(x)
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#define le16toh(x) bswap_16(x)
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#define le32toh(x) bswap_32(x)
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#define le64toh(x) bswap_64(x)
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#endif /*__BYTE_ORDER == __BIG_ENDIAN*/
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#endif /*__BSD_VISIBLE*/
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#endif /*_ENDIAN_H_*/
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