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| 5563 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2007-2013 VMware, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | #ifndef _C99_COMPAT_H_ |
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| 29 | #define _C99_COMPAT_H_ |
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| 30 | |||
| 31 | |||
| 32 | /* |
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| 33 | * MSVC hacks. |
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| 34 | */ |
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| 35 | #if defined(_MSC_VER) |
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| 36 | /* |
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| 37 | * Visual Studio 2012 will complain if we define the `inline` keyword, but |
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| 38 | * actually it only supports the keyword on C++. |
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| 39 | * |
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| 40 | * To avoid this the _ALLOW_KEYWORD_MACROS must be set. |
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| 41 | */ |
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| 42 | # if (_MSC_VER >= 1700) && !defined(_ALLOW_KEYWORD_MACROS) |
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| 43 | # define _ALLOW_KEYWORD_MACROS |
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| 44 | # endif |
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| 45 | |||
| 46 | /* |
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| 47 | * XXX: MSVC has a `__restrict` keyword, but it also has a |
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| 48 | * `__declspec(restrict)` modifier, so it is impossible to define a |
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| 49 | * `restrict` macro without interfering with the latter. Furthermore the |
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| 50 | * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT |
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| 51 | * macro. For now resolve this issue by redefining _CRTRESTRICT, but going |
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| 52 | * forward we should probably should stop using restrict, especially |
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| 53 | * considering that our code does not obbey strict aliasing rules any way. |
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| 54 | */ |
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| 55 | # include |
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| 56 | # undef _CRTRESTRICT |
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| 57 | # define _CRTRESTRICT |
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| 58 | #endif |
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| 59 | |||
| 60 | |||
| 61 | /* |
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| 62 | * C99 inline keyword |
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| 63 | */ |
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| 64 | #ifndef inline |
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| 65 | # ifdef __cplusplus |
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| 66 | /* C++ supports inline keyword */ |
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| 67 | # elif defined(__GNUC__) |
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| 68 | # define inline __inline__ |
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| 69 | # elif defined(_MSC_VER) |
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| 70 | # define inline __inline |
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| 71 | # elif defined(__ICL) |
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| 72 | # define inline __inline |
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| 73 | # elif defined(__INTEL_COMPILER) |
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| 74 | /* Intel compiler supports inline keyword */ |
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| 75 | # elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100) |
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| 76 | # define inline __inline |
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| 77 | # elif defined(__SUNPRO_C) && defined(__C99FEATURES__) |
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| 78 | /* C99 supports inline keyword */ |
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| 79 | # elif (__STDC_VERSION__ >= 199901L) |
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| 80 | /* C99 supports inline keyword */ |
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| 81 | # else |
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| 82 | # define inline |
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| 83 | # endif |
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| 84 | #endif |
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| 85 | |||
| 86 | |||
| 87 | /* |
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| 88 | * C99 restrict keyword |
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| 89 | * |
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| 90 | * See also: |
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| 91 | * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html |
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| 92 | */ |
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| 93 | #ifndef restrict |
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| 94 | # if (__STDC_VERSION__ >= 199901L) |
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| 95 | /* C99 */ |
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| 96 | # elif defined(__SUNPRO_C) && defined(__C99FEATURES__) |
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| 97 | /* C99 */ |
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| 98 | # elif defined(__GNUC__) |
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| 99 | # define restrict __restrict__ |
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| 100 | # elif defined(_MSC_VER) |
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| 101 | # define restrict __restrict |
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| 102 | # else |
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| 103 | # define restrict /* */ |
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| 104 | # endif |
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| 105 | #endif |
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| 106 | |||
| 107 | |||
| 108 | /* |
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| 109 | * C99 __func__ macro |
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| 110 | */ |
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| 111 | #ifndef __func__ |
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| 112 | # if (__STDC_VERSION__ >= 199901L) |
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| 113 | /* C99 */ |
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| 114 | # elif defined(__SUNPRO_C) && defined(__C99FEATURES__) |
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| 115 | /* C99 */ |
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| 116 | # elif defined(__GNUC__) |
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| 117 | # if __GNUC__ >= 2 |
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| 118 | # define __func__ __FUNCTION__ |
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| 119 | # else |
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| 120 | # define __func__ " |
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| 121 | # endif |
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| 122 | # elif defined(_MSC_VER) |
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| 123 | # if _MSC_VER >= 1300 |
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| 124 | # define __func__ __FUNCTION__ |
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| 125 | # else |
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| 126 | # define __func__ " |
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| 127 | # endif |
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| 128 | # else |
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| 129 | # define __func__ " |
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| 130 | # endif |
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| 131 | #endif |
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| 132 | |||
| 133 | |||
| 134 | /* Simple test case for debugging */ |
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| 135 | #if 0 |
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| 136 | static inline const char * |
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| 137 | test_c99_compat_h(const void * restrict a, |
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| 138 | const void * restrict b) |
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| 139 | { |
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| 140 | return __func__; |
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| 141 | } |
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| 142 | #endif |
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| 143 | |||
| 144 | |||
| 145 | #endif /* _C99_COMPAT_H_ */ |