freebsd-skq/sys/contrib/octeon-sdk/cvmx-abi.h

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/**
 * @file
 *
 * This file defines macros for use in determining the current calling ABI.
 *
 * <hr>$Revision: 70030 $<hr>
*/

#ifndef __CVMX_ABI_H__
#define __CVMX_ABI_H__

#if defined(__FreeBSD__) && defined(_KERNEL)
#include <machine/endian.h>
#else
#ifndef __U_BOOT__
#include <endian.h>
#endif
#endif

#ifdef	__cplusplus
extern "C" {
#endif

/* Check for N32 ABI, defined for 32-bit Simple Exec applications
   and Linux N32 ABI.*/
#if (defined _ABIN32 && _MIPS_SIM == _ABIN32)
#define CVMX_ABI_N32
/* Check for N64 ABI, defined for 64-bit Linux toolchain. */
#elif (defined _ABI64 && _MIPS_SIM == _ABI64)
#define CVMX_ABI_N64
/* Check for O32 ABI, defined for Linux 032 ABI, not supported yet. */
#elif (defined _ABIO32 && _MIPS_SIM == _ABIO32)
#define CVMX_ABI_O32
/* Check for EABI ABI, defined for 64-bit Simple Exec applications. */
#else
#define CVMX_ABI_EABI
#endif

#ifndef __BYTE_ORDER
    #if defined(__BIG_ENDIAN) && !defined(__LITTLE_ENDIAN)
        #define __BYTE_ORDER __BIG_ENDIAN
    #elif !defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
        #define __BYTE_ORDER __LITTLE_ENDIAN
        #define __BIG_ENDIAN 4321
    #elif !defined(__BIG_ENDIAN) && !defined(__LITTLE_ENDIAN)
        #define __BIG_ENDIAN 4321
        #define __BYTE_ORDER __BIG_ENDIAN
    #else
        #error Unable to determine Endian mode
    #endif
#endif

/* For compatibility with Linux definitions... */
#if __BYTE_ORDER == __BIG_ENDIAN
# ifndef __BIG_ENDIAN_BITFIELD
#  define __BIG_ENDIAN_BITFIELD
# endif
#else
# ifndef __LITTLE_ENDIAN_BITFIELD
#  define __LITTLE_ENDIAN_BITFIELD
# endif
#endif
#if defined(__BIG_ENDIAN_BITFIELD) && defined(__LITTLE_ENDIAN_BITFIELD)
# error Cannot define both __BIG_ENDIAN_BITFIELD and __LITTLE_ENDIAN_BITFIELD
#endif

#ifdef	__cplusplus
}
#endif

#endif /* __CVMX_ABI_H__ */