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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>
36 lines
665 B
C
36 lines
665 B
C
#ifndef __MACHINE_ENDIAN_H__
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#error "must be included via <machine/endian.h>"
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#endif /* !__MACHINE_ENDIAN_H__ */
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#include <sys/config.h>
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#ifdef __PPC__
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/* Get rid of GCC builtin defines on PowerPC */
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#ifdef _BIG_ENDIAN
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#undef _BIG_ENDIAN
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#endif
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#ifdef _LITTLE_ENDIAN
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#undef _LITTLE_ENDIAN
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#endif
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#endif /* __PPC__ */
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#ifndef _LITTLE_ENDIAN
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#define _LITTLE_ENDIAN 1234
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#endif
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#ifndef _BIG_ENDIAN
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#define _BIG_ENDIAN 4321
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#endif
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#ifndef _PDP_ENDIAN
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#define _PDP_ENDIAN 3412
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#endif
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#ifndef _BYTE_ORDER
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#if defined(__IEEE_LITTLE_ENDIAN) || defined(__IEEE_BYTES_LITTLE_ENDIAN)
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#define _BYTE_ORDER _LITTLE_ENDIAN
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#else
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#define _BYTE_ORDER _BIG_ENDIAN
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#endif
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#endif
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