forked from epics_driver_modules/require
zimoch
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
#ifndef INC_epicsEndian_H
|
|
#define INC_epicsEndian_H
|
|
|
|
#define EPICS_ENDIAN_LITTLE 1234
|
|
#define EPICS_ENDIAN_BIG 4321
|
|
|
|
#if defined (vxWorks)
|
|
|
|
#include <types/vxArch.h>
|
|
|
|
#if _BYTE_ORDER == _LITTLE_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
|
|
#elif _BYTE_ORDER == _BIG_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_BIG
|
|
#else
|
|
# error EPICS hasnt been ported to _BYTE_ORDER specified by vxWorks <types/vxArch.h>
|
|
#endif
|
|
|
|
/* for now, assume that vxWorks doesnt run on weird arch like ARM NWFP */
|
|
#define EPICS_FLOAT_WORD_ORDER EPICS_BYTE_ORDER
|
|
|
|
#elif defined (_WIN32)
|
|
|
|
/* for now, assume that win32 runs only on generic little endian */
|
|
#define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
|
|
#define EPICS_FLOAT_WORD_ORDER EPICS_BYTE_ORDER
|
|
|
|
#else
|
|
|
|
/* if compilation fails because this wasnt found then you may need to define an OS
|
|
specific osdWireConfig.h */
|
|
|
|
#include <sys/param.h>
|
|
|
|
#ifdef __BYTE_ORDER
|
|
# if __BYTE_ORDER == __LITTLE_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
|
|
# elif __BYTE_ORDER == __BIG_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_BIG
|
|
# else
|
|
# error EPICS hasnt been ported to run on the <sys/param.h> specified __BYTE_ORDER
|
|
# endif
|
|
#else
|
|
# ifdef BYTE_ORDER
|
|
# if BYTE_ORDER == LITTLE_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_LITTLE
|
|
# elif BYTE_ORDER == BIG_ENDIAN
|
|
# define EPICS_BYTE_ORDER EPICS_ENDIAN_BIG
|
|
# else
|
|
# error EPICS hasnt been ported to run on the <sys/param.h> specified BYTE_ORDER
|
|
# endif
|
|
# else
|
|
# error <sys/param.h> doesnt specify __BYTE_ORDER or BYTE_ORDER - is an OS specific osdWireConfig.h needed?
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __FLOAT_WORD_ORDER
|
|
# if __FLOAT_WORD_ORDER == __LITTLE_ENDIAN
|
|
# define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_LITTLE
|
|
# elif __FLOAT_WORD_ORDER == __BIG_ENDIAN
|
|
# define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_BIG
|
|
# else
|
|
# error EPICS hasnt been ported to <sys/param.h> specified __FLOAT_WORD_ORDER
|
|
# endif
|
|
#else
|
|
# ifdef FLOAT_WORD_ORDER
|
|
# if FLOAT_WORD_ORDER == LITTLE_ENDIAN
|
|
# define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_LITTLE
|
|
# elif FLOAT_WORD_ORDER == BIG_ENDIAN
|
|
# define EPICS_FLOAT_WORD_ORDER EPICS_ENDIAN_BIG
|
|
# else
|
|
# error EPICS hasnt been ported to <sys/param.h> specified FLOAT_WORD_ORDER
|
|
# endif
|
|
# else
|
|
/* assume that if neither __FLOAT_WORD_ORDER nor FLOAT_WORD_ORDER are
|
|
defined then weird fp ordered archs like arm nwfp aren't supported */
|
|
# define EPICS_FLOAT_WORD_ORDER EPICS_BYTE_ORDER
|
|
# endif
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif /* INC_epicsEndian_H */
|