cvmx-abi.h revision 232812 
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40
41
42/**
43 * @file
44 *
45 * This file defines macros for use in determining the current calling ABI.
46 *
47 * <hr>$Revision: 70030 $<hr>
48*/
49
50#ifndef __CVMX_ABI_H__
51#define __CVMX_ABI_H__
52
53#if defined(__FreeBSD__) && defined(_KERNEL)
54#include <machine/endian.h>
55#else
56#ifndef __U_BOOT__
57#include <endian.h>
58#endif
59#endif
60
61#ifdef	__cplusplus
62extern "C" {
63#endif
64
65/* Check for N32 ABI, defined for 32-bit Simple Exec applications
66   and Linux N32 ABI.*/
67#if (defined _ABIN32 && _MIPS_SIM == _ABIN32)
68#define CVMX_ABI_N32
69/* Check for N64 ABI, defined for 64-bit Linux toolchain. */
70#elif (defined _ABI64 && _MIPS_SIM == _ABI64)
71#define CVMX_ABI_N64
72/* Check for O32 ABI, defined for Linux 032 ABI, not supported yet. */
73#elif (defined _ABIO32 && _MIPS_SIM == _ABIO32)
74#define CVMX_ABI_O32
75/* Check for EABI ABI, defined for 64-bit Simple Exec applications. */
76#else
77#define CVMX_ABI_EABI
78#endif
79
80#ifndef __BYTE_ORDER
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
89    #else
90        #error Unable to determine Endian mode
91    #endif
92#endif
93
94/* For compatibility with Linux definitions... */
95#if __BYTE_ORDER == __BIG_ENDIAN
96# ifndef __BIG_ENDIAN_BITFIELD
97#  define __BIG_ENDIAN_BITFIELD
98# endif
99#else
100# ifndef __LITTLE_ENDIAN_BITFIELD
101#  define __LITTLE_ENDIAN_BITFIELD
102# endif
103#endif
104#if defined(__BIG_ENDIAN_BITFIELD) && defined(__LITTLE_ENDIAN_BITFIELD)
105# error Cannot define both __BIG_ENDIAN_BITFIELD and __LITTLE_ENDIAN_BITFIELD
106#endif
107
108#ifdef	__cplusplus
109}
110#endif
111
112#endif /* __CVMX_ABI_H__ */
113