projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 36ff6d80 SB |
1 | /* Copyright 2016 Google Inc. All Rights Reserved.\r |
| 2 | \r | |
| 3 | Distributed under MIT license.\r | |
| 4 | See file LICENSE for detail or copy at https://opensource.org/licenses/MIT\r | |
| 5 | */\r | |
| 6 | \r | |
| 7 | /* Macros for compiler / platform specific features and build options. */\r | |
| 8 | \r | |
| 9 | #ifndef BROTLI_COMMON_PORT_H_\r | |
| 10 | #define BROTLI_COMMON_PORT_H_\r | |
| 11 | \r | |
| 12 | /* Compatibility with non-clang compilers. */\r | |
| 13 | #ifndef __has_builtin\r | |
| 14 | #define __has_builtin(x) 0\r | |
| 15 | #endif\r | |
| 16 | \r | |
| 17 | #ifndef __has_attribute\r | |
| 18 | #define __has_attribute(x) 0\r | |
| 19 | #endif\r | |
| 20 | \r | |
| 21 | #ifndef __has_feature\r | |
| 22 | #define __has_feature(x) 0\r | |
| 23 | #endif\r | |
| 24 | \r | |
| 25 | #if defined(__GNUC__) && defined(__GNUC_MINOR__)\r | |
| 26 | #define BROTLI_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)\r | |
| 27 | #else\r | |
| 28 | #define BROTLI_GCC_VERSION 0\r | |
| 29 | #endif\r | |
| 30 | \r | |
| 31 | #if defined(__ICC)\r | |
| 32 | #define BROTLI_ICC_VERSION __ICC\r | |
| 33 | #else\r | |
| 34 | #define BROTLI_ICC_VERSION 0\r | |
| 35 | #endif\r | |
| 36 | \r | |
| 37 | #if defined(BROTLI_BUILD_MODERN_COMPILER)\r | |
| 38 | #define BROTLI_MODERN_COMPILER 1\r | |
| 39 | #elif BROTLI_GCC_VERSION > 300 || BROTLI_ICC_VERSION >= 1600\r | |
| 40 | #define BROTLI_MODERN_COMPILER 1\r | |
| 41 | #else\r | |
| 42 | #define BROTLI_MODERN_COMPILER 0\r | |
| 43 | #endif\r | |
| 44 | \r | |
| 45 | /* Define "PREDICT_TRUE" and "PREDICT_FALSE" macros for capable compilers.\r | |
| 46 | \r | |
| 47 | To apply compiler hint, enclose the branching condition into macros, like this:\r | |
| 48 | \r | |
| 49 | if (PREDICT_TRUE(zero == 0)) {\r | |
| 50 | // main execution path\r | |
| 51 | } else {\r | |
| 52 | // compiler should place this code outside of main execution path\r | |
| 53 | }\r | |
| 54 | \r | |
| 55 | OR:\r | |
| 56 | \r | |
| 57 | if (PREDICT_FALSE(something_rare_or_unexpected_happens)) {\r | |
| 58 | // compiler should place this code outside of main execution path\r | |
| 59 | }\r | |
| 60 | \r | |
| 61 | */\r | |
| 62 | #if BROTLI_MODERN_COMPILER || __has_builtin(__builtin_expect)\r | |
| 63 | #define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))\r | |
| 64 | #define PREDICT_FALSE(x) (__builtin_expect(x, 0))\r | |
| 65 | #else\r | |
| 66 | #define PREDICT_FALSE(x) (x)\r | |
| 67 | #define PREDICT_TRUE(x) (x)\r | |
| 68 | #endif\r | |
| 69 | \r | |
| 70 | #if BROTLI_MODERN_COMPILER || __has_attribute(always_inline)\r | |
| 71 | #define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline))\r | |
| 72 | #else\r | |
| 73 | #define ATTRIBUTE_ALWAYS_INLINE\r | |
| 74 | #endif\r | |
| 75 | \r | |
| 76 | #if defined(_WIN32) || defined(__CYGWIN__)\r | |
| 77 | #define ATTRIBUTE_VISIBILITY_HIDDEN\r | |
| 78 | #elif BROTLI_MODERN_COMPILER || __has_attribute(visibility)\r | |
| 79 | #define ATTRIBUTE_VISIBILITY_HIDDEN __attribute__ ((visibility ("hidden")))\r | |
| 80 | #else\r | |
| 81 | #define ATTRIBUTE_VISIBILITY_HIDDEN\r | |
| 82 | #endif\r | |
| 83 | \r | |
| 84 | #ifndef BROTLI_INTERNAL\r | |
| 85 | #define BROTLI_INTERNAL ATTRIBUTE_VISIBILITY_HIDDEN\r | |
| 86 | #endif\r | |
| 87 | \r | |
| 88 | #ifndef _MSC_VER\r | |
| 89 | #if defined(__cplusplus) || !defined(__STRICT_ANSI__) || \\r | |
| 90 | __STDC_VERSION__ >= 199901L\r | |
| 91 | #define BROTLI_INLINE inline ATTRIBUTE_ALWAYS_INLINE\r | |
| 92 | #else\r | |
| 93 | #define BROTLI_INLINE\r | |
| 94 | #endif\r | |
| 95 | #else /* _MSC_VER */\r | |
| 96 | #define BROTLI_INLINE __forceinline\r | |
| 97 | #endif /* _MSC_VER */\r | |
| 98 | \r | |
| 99 | #if BROTLI_MODERN_COMPILER || __has_attribute(noinline)\r | |
| 100 | #define BROTLI_NOINLINE __attribute__((noinline))\r | |
| 101 | #else\r | |
| 102 | #define BROTLI_NOINLINE\r | |
| 103 | #endif\r | |
| 104 | \r | |
| 105 | #define BROTLI_UNUSED(X) (void)(X)\r | |
| 106 | \r | |
| 107 | #endif /* BROTLI_COMMON_PORT_H_ */\r |