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| Rev | Author | Line No. | Line |
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| 1 | pmbaty | 1 | /* |
| 2 | Simple DirectMedia Layer |
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| 3 | Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org> |
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| 4 | |||
| 5 | This software is provided 'as-is', without any express or implied |
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| 6 | warranty. In no event will the authors be held liable for any damages |
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| 7 | arising from the use of this software. |
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| 8 | |||
| 9 | Permission is granted to anyone to use this software for any purpose, |
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| 10 | including commercial applications, and to alter it and redistribute it |
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| 11 | freely, subject to the following restrictions: |
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| 12 | |||
| 13 | 1. The origin of this software must not be misrepresented; you must not |
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| 14 | claim that you wrote the original software. If you use this software |
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| 15 | in a product, an acknowledgment in the product documentation would be |
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| 16 | appreciated but is not required. |
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| 17 | 2. Altered source versions must be plainly marked as such, and must not be |
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| 18 | misrepresented as being the original software. |
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| 19 | 3. This notice may not be removed or altered from any source distribution. |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * \file begin_code.h |
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| 24 | * |
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| 25 | * This file sets things up for C dynamic library function definitions, |
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| 26 | * static inlined functions, and structures aligned at 4-byte alignment. |
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| 27 | * If you don't like ugly C preprocessor code, don't look at this file. :) |
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| 28 | */ |
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| 29 | |||
| 30 | /* This shouldn't be nested -- included it around code only. */ |
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| 31 | #ifdef _begin_code_h |
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| 32 | #error Nested inclusion of begin_code.h |
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| 33 | #endif |
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| 34 | #define _begin_code_h |
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| 35 | |||
| 36 | #ifndef SDL_DEPRECATED |
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| 37 | # if (__GNUC__ >= 4) /* technically, this arrived in gcc 3.1, but oh well. */ |
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| 38 | # define SDL_DEPRECATED __attribute__((deprecated)) |
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| 39 | # else |
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| 40 | # define SDL_DEPRECATED |
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| 41 | # endif |
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| 42 | #endif |
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| 43 | |||
| 44 | #ifndef SDL_UNUSED |
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| 45 | # ifdef __GNUC__ |
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| 46 | # define SDL_UNUSED __attribute__((unused)) |
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| 47 | # else |
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| 48 | # define SDL_UNUSED |
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| 49 | # endif |
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| 50 | #endif |
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| 51 | |||
| 52 | /* Some compilers use a special export keyword */ |
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| 53 | #ifndef DECLSPEC |
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| 54 | # if defined(__WIN32__) || defined(__WINRT__) |
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| 55 | # ifdef __BORLANDC__ |
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| 56 | # ifdef BUILD_SDL |
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| 57 | # define DECLSPEC |
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| 58 | # else |
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| 59 | # define DECLSPEC __declspec(dllimport) |
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| 60 | # endif |
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| 61 | # else |
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| 62 | # define DECLSPEC __declspec(dllexport) |
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| 63 | # endif |
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| 64 | # elif defined(__OS2__) |
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| 65 | # ifdef BUILD_SDL |
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| 66 | # define DECLSPEC __declspec(dllexport) |
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| 67 | # else |
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| 68 | # define DECLSPEC |
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| 69 | # endif |
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| 70 | # else |
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| 71 | # if defined(__GNUC__) && __GNUC__ >= 4 |
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| 72 | # define DECLSPEC __attribute__ ((visibility("default"))) |
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| 73 | # else |
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| 74 | # define DECLSPEC |
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| 75 | # endif |
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| 76 | # endif |
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| 77 | #endif |
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| 78 | |||
| 79 | /* By default SDL uses the C calling convention */ |
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| 80 | #ifndef SDLCALL |
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| 81 | #if (defined(__WIN32__) || defined(__WINRT__)) && !defined(__GNUC__) |
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| 82 | #define SDLCALL __cdecl |
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| 83 | #elif defined(__OS2__) || defined(__EMX__) |
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| 84 | #define SDLCALL _System |
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| 85 | # if defined (__GNUC__) && !defined(_System) |
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| 86 | # define _System /* for old EMX/GCC compat. */ |
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| 87 | # endif |
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| 88 | #else |
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| 89 | #define SDLCALL |
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| 90 | #endif |
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| 91 | #endif /* SDLCALL */ |
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| 92 | |||
| 93 | /* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */ |
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| 94 | #ifdef __SYMBIAN32__ |
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| 95 | #undef DECLSPEC |
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| 96 | #define DECLSPEC |
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| 97 | #endif /* __SYMBIAN32__ */ |
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| 98 | |||
| 99 | /* Force structure packing at 4 byte alignment. |
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| 100 | This is necessary if the header is included in code which has structure |
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| 101 | packing set to an alternate value, say for loading structures from disk. |
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| 102 | The packing is reset to the previous value in close_code.h |
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| 103 | */ |
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| 104 | #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__) |
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| 105 | #ifdef _MSC_VER |
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| 106 | #pragma warning(disable: 4103) |
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| 107 | #endif |
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| 108 | #ifdef __BORLANDC__ |
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| 109 | #pragma nopackwarning |
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| 110 | #endif |
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| 111 | #ifdef _M_X64 |
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| 112 | /* Use 8-byte alignment on 64-bit architectures, so pointers are aligned */ |
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| 113 | #pragma pack(push,8) |
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| 114 | #else |
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| 115 | #pragma pack(push,4) |
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| 116 | #endif |
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| 117 | #endif /* Compiler needs structure packing set */ |
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| 118 | |||
| 119 | #ifndef SDL_INLINE |
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| 120 | #if defined(__GNUC__) |
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| 121 | #define SDL_INLINE __inline__ |
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| 122 | #elif defined(_MSC_VER) || defined(__BORLANDC__) || \ |
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| 123 | defined(__DMC__) || defined(__SC__) || \ |
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| 124 | defined(__WATCOMC__) || defined(__LCC__) || \ |
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| 125 | defined(__DECC) || defined(__CC_ARM) |
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| 126 | #define SDL_INLINE __inline |
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| 127 | #ifndef __inline__ |
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| 128 | #define __inline__ __inline |
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| 129 | #endif |
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| 130 | #else |
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| 131 | #define SDL_INLINE inline |
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| 132 | #ifndef __inline__ |
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| 133 | #define __inline__ inline |
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| 134 | #endif |
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| 135 | #endif |
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| 136 | #endif /* SDL_INLINE not defined */ |
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| 137 | |||
| 138 | #ifndef SDL_FORCE_INLINE |
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| 139 | #if defined(_MSC_VER) |
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| 140 | #define SDL_FORCE_INLINE __forceinline |
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| 141 | #elif ( (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__) ) |
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| 142 | #define SDL_FORCE_INLINE __attribute__((always_inline)) static __inline__ |
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| 143 | #else |
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| 144 | #define SDL_FORCE_INLINE static SDL_INLINE |
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| 145 | #endif |
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| 146 | #endif /* SDL_FORCE_INLINE not defined */ |
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| 147 | |||
| 148 | #ifndef SDL_NORETURN |
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| 149 | #if defined(__GNUC__) |
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| 150 | #define SDL_NORETURN __attribute__((noreturn)) |
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| 151 | #elif defined(_MSC_VER) |
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| 152 | #define SDL_NORETURN __declspec(noreturn) |
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| 153 | #else |
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| 154 | #define SDL_NORETURN |
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| 155 | #endif |
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| 156 | #endif /* SDL_NORETURN not defined */ |
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| 157 | |||
| 158 | /* Apparently this is needed by several Windows compilers */ |
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| 159 | #if !defined(__MACH__) |
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| 160 | #ifndef NULL |
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| 161 | #ifdef __cplusplus |
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| 162 | #define NULL 0 |
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| 163 | #else |
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| 164 | #define NULL ((void *)0) |
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| 165 | #endif |
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| 166 | #endif /* NULL */ |
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| 167 | #endif /* ! Mac OS X - breaks precompiled headers */ |