Home | History | Annotate | Download | only in core 
      1 /*
      2  * Copyright 2006 The Android Open Source Project
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 // IWYU pragma: private, include "SkTypes.h"
      9 
     10 #ifndef SkPreConfig_DEFINED
     11 #define SkPreConfig_DEFINED
     12 
     13 // Allows embedders that want to disable macros that take arguments to just
     14 // define that symbol to be one of these
     15 #define SK_NOTHING_ARG1(arg1)
     16 #define SK_NOTHING_ARG2(arg1, arg2)
     17 #define SK_NOTHING_ARG3(arg1, arg2, arg3)
     18 
     19 //////////////////////////////////////////////////////////////////////
     20 
     21 #if !defined(SK_BUILD_FOR_ANDROID) && !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_WIN) && !defined(SK_BUILD_FOR_UNIX) && !defined(SK_BUILD_FOR_MAC)
     22 
     23     #ifdef __APPLE__
     24         #include "TargetConditionals.h"
     25     #endif
     26 
     27     #if defined(_WIN32) || defined(__SYMBIAN32__)
     28         #define SK_BUILD_FOR_WIN
     29     #elif defined(ANDROID) || defined(__ANDROID__)
     30         #define SK_BUILD_FOR_ANDROID
     31     #elif defined(linux) || defined(__linux) || defined(__FreeBSD__) || \
     32           defined(__OpenBSD__) || defined(__sun) || defined(__NetBSD__) || \
     33           defined(__DragonFly__) || defined(__Fuchsia__) || \
     34           defined(__GLIBC__) || defined(__GNU__) || defined(__unix__)
     35         #define SK_BUILD_FOR_UNIX
     36     #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
     37         #define SK_BUILD_FOR_IOS
     38     #else
     39         #define SK_BUILD_FOR_MAC
     40     #endif
     41 
     42 #endif
     43 
     44 /* Even if the user only defined the framework variant we still need to build
     45  * the default (NDK-compliant) Android code. Therefore, when attempting to
     46  * include/exclude something from the framework variant check first that we are
     47  * building for Android then check the status of the framework define.
     48  */
     49 #if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
     50     #define SK_BUILD_FOR_ANDROID
     51 #endif
     52 
     53 //////////////////////////////////////////////////////////////////////
     54 
     55 #ifdef SK_BUILD_FOR_WIN
     56     #if !defined(SK_RESTRICT)
     57         #define SK_RESTRICT __restrict
     58     #endif
     59     #if !defined(SK_WARN_UNUSED_RESULT)
     60         #define SK_WARN_UNUSED_RESULT
     61     #endif
     62 #endif
     63 
     64 #if !defined(SK_RESTRICT)
     65     #define SK_RESTRICT __restrict__
     66 #endif
     67 
     68 #if !defined(SK_WARN_UNUSED_RESULT)
     69     #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
     70 #endif
     71 
     72 //////////////////////////////////////////////////////////////////////
     73 
     74 #if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
     75     #if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
     76         #define SK_CPU_BENDIAN
     77     #elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
     78         #define SK_CPU_LENDIAN
     79     #elif defined(__sparc) || defined(__sparc__) || \
     80       defined(_POWER) || defined(__powerpc__) || \
     81       defined(__ppc__) || defined(__hppa) || \
     82       defined(__PPC__) || defined(__PPC64__) || \
     83       defined(_MIPSEB) || defined(__ARMEB__) || \
     84       defined(__s390__) || \
     85       (defined(__sh__) && defined(__BIG_ENDIAN__)) || \
     86       (defined(__ia64) && defined(__BIG_ENDIAN__))
     87          #define SK_CPU_BENDIAN
     88     #else
     89         #define SK_CPU_LENDIAN
     90     #endif
     91 #endif
     92 
     93 //////////////////////////////////////////////////////////////////////
     94 
     95 #if defined(__i386) || defined(_M_IX86) ||  defined(__x86_64__) || defined(_M_X64)
     96   #define SK_CPU_X86 1
     97 #endif
     98 
     99 /**
    100  *  SK_CPU_SSE_LEVEL
    101  *
    102  *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
    103  *  On non-intel CPU this should be undefined.
    104  */
    105 
    106 #define SK_CPU_SSE_LEVEL_SSE1     10
    107 #define SK_CPU_SSE_LEVEL_SSE2     20
    108 #define SK_CPU_SSE_LEVEL_SSE3     30
    109 #define SK_CPU_SSE_LEVEL_SSSE3    31
    110 #define SK_CPU_SSE_LEVEL_SSE41    41
    111 #define SK_CPU_SSE_LEVEL_SSE42    42
    112 #define SK_CPU_SSE_LEVEL_AVX      51
    113 #define SK_CPU_SSE_LEVEL_AVX2     52
    114 
    115 // When targetting iOS and using gyp to generate the build files, it is not
    116 // possible to select files to build depending on the architecture (i.e. it
    117 // is not possible to use hand optimized assembly implementation). In that
    118 // configuration SK_BUILD_NO_OPTS is defined. Remove optimisation then.
    119 #ifdef SK_BUILD_NO_OPTS
    120     #define SK_CPU_SSE_LEVEL 0
    121 #endif
    122 
    123 // Are we in GCC?
    124 #ifndef SK_CPU_SSE_LEVEL
    125     // These checks must be done in descending order to ensure we set the highest
    126     // available SSE level.
    127     #if defined(__AVX2__)
    128         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_AVX2
    129     #elif defined(__AVX__)
    130         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_AVX
    131     #elif defined(__SSE4_2__)
    132         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE42
    133     #elif defined(__SSE4_1__)
    134         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE41
    135     #elif defined(__SSSE3__)
    136         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
    137     #elif defined(__SSE3__)
    138         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
    139     #elif defined(__SSE2__)
    140         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    141     #endif
    142 #endif
    143 
    144 // Are we in VisualStudio?
    145 #ifndef SK_CPU_SSE_LEVEL
    146     // These checks must be done in descending order to ensure we set the highest
    147     // available SSE level. 64-bit intel guarantees at least SSE2 support.
    148     #if defined(__AVX2__)
    149         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_AVX2
    150     #elif defined(__AVX__)
    151         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_AVX
    152     #elif defined(_M_X64) || defined(_M_AMD64)
    153         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_SSE2
    154     #elif defined(_M_IX86_FP)
    155         #if _M_IX86_FP >= 2
    156             #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    157         #elif _M_IX86_FP == 1
    158             #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
    159         #endif
    160     #endif
    161 #endif
    162 
    163 //////////////////////////////////////////////////////////////////////
    164 // ARM defines
    165 
    166 #if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
    167     #define SK_CPU_ARM32
    168 
    169     #if defined(__GNUC__)
    170         #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
    171                 || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
    172                 || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
    173             #define SK_ARM_ARCH 7
    174         #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
    175                 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
    176                 || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
    177                 || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
    178             #define SK_ARM_ARCH 6
    179         #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
    180                 || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
    181                 || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
    182             #define SK_ARM_ARCH 5
    183         #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
    184             #define SK_ARM_ARCH 4
    185         #else
    186             #define SK_ARM_ARCH 3
    187         #endif
    188     #endif
    189 #endif
    190 
    191 #if defined(__aarch64__) && !defined(SK_BUILD_NO_OPTS)
    192     #define SK_CPU_ARM64
    193 #endif
    194 
    195 // All 64-bit ARM chips have NEON.  Many 32-bit ARM chips do too.
    196 #if !defined(SK_ARM_HAS_NEON) && !defined(SK_BUILD_NO_OPTS) && (defined(__ARM_NEON__) || defined(__ARM_NEON))
    197     #define SK_ARM_HAS_NEON
    198 #endif
    199 
    200 // Really this __APPLE__ check shouldn't be necessary, but it seems that Apple's Clang defines
    201 // __ARM_FEATURE_CRC32 for -arch arm64, even though their chips don't support those instructions!
    202 #if defined(__ARM_FEATURE_CRC32) && !defined(__APPLE__)
    203     #define SK_ARM_HAS_CRC32
    204 #endif
    205 
    206 //////////////////////////////////////////////////////////////////////
    207 
    208 #if !defined(SKIA_IMPLEMENTATION)
    209     #define SKIA_IMPLEMENTATION 0
    210 #endif
    211 
    212 #if !defined(SK_API)
    213     #if defined(SKIA_DLL)
    214         #if defined(_MSC_VER)
    215             #if SKIA_IMPLEMENTATION
    216                 #define SK_API __declspec(dllexport)
    217             #else
    218                 #define SK_API __declspec(dllimport)
    219             #endif
    220         #else
    221             #define SK_API __attribute__((visibility("default")))
    222         #endif
    223     #else
    224         #define SK_API
    225     #endif
    226 #endif
    227 
    228 //////////////////////////////////////////////////////////////////////
    229 
    230 /**
    231  * Use SK_PURE_FUNC as an attribute to indicate that a function's
    232  * return value only depends on the value of its parameters. This
    233  * can help the compiler optimize out successive calls.
    234  *
    235  * Usage:
    236  *      void  function(int params)  SK_PURE_FUNC;
    237  */
    238 #if defined(__GNUC__)
    239 #  define  SK_PURE_FUNC  __attribute__((pure))
    240 #else
    241 #  define  SK_PURE_FUNC  /* nothing */
    242 #endif
    243 
    244 //////////////////////////////////////////////////////////////////////
    245 
    246 /**
    247  * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
    248  * supports __attribute__((<name>)). Mostly important because
    249  * Clang doesn't support all of GCC attributes.
    250  */
    251 #if defined(__has_attribute)
    252 #   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
    253 #elif defined(__GNUC__)
    254 #   define SK_HAS_ATTRIBUTE(x) 1
    255 #else
    256 #   define SK_HAS_ATTRIBUTE(x) 0
    257 #endif
    258 
    259 /**
    260  * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
    261  * to specify individual optimization level of -O1, if the compiler
    262  * supports it.
    263  *
    264  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
    265  */
    266 #if SK_HAS_ATTRIBUTE(optimize)
    267 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
    268 #else
    269 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
    270 #endif
    271 
    272 #endif
    273