1 /***********************license start***************
2 * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
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16 * with the distribution.
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28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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38 ***********************license end**************************************/
45 * This file defines macros for use in determining the current calling ABI.
47 * <hr>$Revision: 70030 $<hr>
50 #ifndef __CVMX_ABI_H__
51 #define __CVMX_ABI_H__
53 #if defined(__FreeBSD__) && defined(_KERNEL)
54 #include <machine/endian.h>
65 /* Check for N32 ABI, defined for 32-bit Simple Exec applications
67 #if (defined _ABIN32 && _MIPS_SIM == _ABIN32)
69 /* Check for N64 ABI, defined for 64-bit Linux toolchain. */
70 #elif (defined _ABI64 && _MIPS_SIM == _ABI64)
72 /* Check for O32 ABI, defined for Linux 032 ABI, not supported yet. */
73 #elif (defined _ABIO32 && _MIPS_SIM == _ABIO32)
75 /* Check for EABI ABI, defined for 64-bit Simple Exec applications. */
81 #if defined(__BIG_ENDIAN) && !defined(__LITTLE_ENDIAN)
82 #define __BYTE_ORDER __BIG_ENDIAN
83 #elif !defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
84 #define __BYTE_ORDER __LITTLE_ENDIAN
85 #define __BIG_ENDIAN 4321
86 #elif !defined(__BIG_ENDIAN) && !defined(__LITTLE_ENDIAN)
87 #define __BIG_ENDIAN 4321
88 #define __BYTE_ORDER __BIG_ENDIAN
90 #error Unable to determine Endian mode
94 /* For compatibility with Linux definitions... */
95 #if __BYTE_ORDER == __BIG_ENDIAN
96 # ifndef __BIG_ENDIAN_BITFIELD
97 # define __BIG_ENDIAN_BITFIELD
100 # ifndef __LITTLE_ENDIAN_BITFIELD
101 # define __LITTLE_ENDIAN_BITFIELD
104 #if defined(__BIG_ENDIAN_BITFIELD) && defined(__LITTLE_ENDIAN_BITFIELD)
105 # error Cannot define both __BIG_ENDIAN_BITFIELD and __LITTLE_ENDIAN_BITFIELD
112 #endif /* __CVMX_ABI_H__ */