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      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_WIN32) && !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_WIN32
     29     #elif 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(__GLIBC__) || defined(__GNU__) || \
     34           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 #if !defined(SK_DEBUG) && !defined(SK_RELEASE)
     56     #ifdef NDEBUG
     57         #define SK_RELEASE
     58     #else
     59         #define SK_DEBUG
     60     #endif
     61 #endif
     62 
     63 #ifdef SK_BUILD_FOR_WIN32
     64     #if !defined(SK_RESTRICT)
     65         #define SK_RESTRICT __restrict
     66     #endif
     67     #if !defined(SK_WARN_UNUSED_RESULT)
     68         #define SK_WARN_UNUSED_RESULT
     69     #endif
     70 #endif
     71 
     72 //////////////////////////////////////////////////////////////////////
     73 
     74 #if !defined(SK_RESTRICT)
     75     #define SK_RESTRICT __restrict__
     76 #endif
     77 
     78 #if !defined(SK_WARN_UNUSED_RESULT)
     79     #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
     80 #endif
     81 
     82 //////////////////////////////////////////////////////////////////////
     83 
     84 #if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
     85     #if defined(__sparc) || defined(__sparc__) || \
     86       defined(_POWER) || defined(__powerpc__) || \
     87       defined(__ppc__) || defined(__hppa) || \
     88       defined(__PPC__) || defined(__PPC64__) || \
     89       defined(_MIPSEB) || defined(__ARMEB__) || \
     90       defined(__s390__) || \
     91       (defined(__sh__) && defined(__BIG_ENDIAN__)) || \
     92       (defined(__ia64) && defined(__BIG_ENDIAN__))
     93          #define SK_CPU_BENDIAN
     94     #else
     95         #define SK_CPU_LENDIAN
     96     #endif
     97 #endif
     98 
     99 //////////////////////////////////////////////////////////////////////
    100 
    101 #if defined(__i386) || defined(_M_IX86) ||  defined(__x86_64__) || defined(_M_X64)
    102   #define SK_CPU_X86 1
    103 #endif
    104 
    105 /**
    106  *  SK_CPU_SSE_LEVEL
    107  *
    108  *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
    109  *  On non-intel CPU this should be undefined.
    110  */
    111 
    112 #define SK_CPU_SSE_LEVEL_SSE1     10
    113 #define SK_CPU_SSE_LEVEL_SSE2     20
    114 #define SK_CPU_SSE_LEVEL_SSE3     30
    115 #define SK_CPU_SSE_LEVEL_SSSE3    31
    116 #define SK_CPU_SSE_LEVEL_SSE41    41
    117 #define SK_CPU_SSE_LEVEL_SSE42    42
    118 #define SK_CPU_SSE_LEVEL_AVX      51
    119 #define SK_CPU_SSE_LEVEL_AVX2     52
    120 
    121 // Are we in GCC?
    122 #ifndef SK_CPU_SSE_LEVEL
    123     // These checks must be done in descending order to ensure we set the highest
    124     // available SSE level.
    125     #if defined(__AVX2__)
    126         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_AVX2
    127     #elif defined(__AVX__)
    128         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_AVX
    129     #elif defined(__SSE4_2__)
    130         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE42
    131     #elif defined(__SSE4_1__)
    132         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE41
    133     #elif defined(__SSSE3__)
    134         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
    135     #elif defined(__SSE3__)
    136         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
    137     #elif defined(__SSE2__)
    138         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    139     #endif
    140 #endif
    141 
    142 // Are we in VisualStudio?
    143 #ifndef SK_CPU_SSE_LEVEL
    144     // These checks must be done in descending order to ensure we set the highest
    145     // available SSE level. 64-bit intel guarantees at least SSE2 support.
    146     #if defined(__AVX2__)
    147         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_AVX2
    148     #elif defined(__AVX__)
    149         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_AVX
    150     #elif defined(_M_X64) || defined(_M_AMD64)
    151         #define SK_CPU_SSE_LEVEL        SK_CPU_SSE_LEVEL_SSE2
    152     #elif defined(_M_IX86_FP)
    153         #if _M_IX86_FP >= 2
    154             #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    155         #elif _M_IX86_FP == 1
    156             #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
    157         #endif
    158     #endif
    159 #endif
    160 
    161 //////////////////////////////////////////////////////////////////////
    162 // ARM defines
    163 
    164 #if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
    165     #define SK_CPU_ARM32
    166 
    167     #if defined(__GNUC__)
    168         #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
    169                 || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
    170                 || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
    171             #define SK_ARM_ARCH 7
    172         #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
    173                 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
    174                 || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
    175                 || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
    176             #define SK_ARM_ARCH 6
    177         #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
    178                 || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
    179                 || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
    180             #define SK_ARM_ARCH 5
    181         #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
    182             #define SK_ARM_ARCH 4
    183         #else
    184             #define SK_ARM_ARCH 3
    185         #endif
    186     #endif
    187 #endif
    188 
    189 // Disable ARM64 optimizations for iOS due to complications regarding gyp and iOS.
    190 #if defined(__aarch64__) && !defined(SK_BUILD_FOR_IOS)
    191     #define SK_CPU_ARM64
    192 #endif
    193 
    194 // All 64-bit ARM chips have NEON.  Many 32-bit ARM chips do too.
    195 // TODO: Why don't we want NEON on iOS?
    196 #if !defined(SK_ARM_HAS_NEON) && !defined(SK_BUILD_FOR_IOS) && (defined(__ARM_NEON__) || defined(__ARM_NEON))
    197     #define SK_ARM_HAS_NEON
    198 #endif
    199 
    200 //////////////////////////////////////////////////////////////////////
    201 
    202 #if !defined(SKIA_IMPLEMENTATION)
    203     #define SKIA_IMPLEMENTATION 0
    204 #endif
    205 
    206 #if defined(SKIA_DLL)
    207     #if defined(WIN32)
    208         #if SKIA_IMPLEMENTATION
    209             #define SK_API __declspec(dllexport)
    210         #else
    211             #define SK_API __declspec(dllimport)
    212         #endif
    213     #else
    214         #define SK_API __attribute__((visibility("default")))
    215     #endif
    216 #else
    217     #define SK_API
    218 #endif
    219 
    220 //////////////////////////////////////////////////////////////////////
    221 
    222 /**
    223  * Use SK_PURE_FUNC as an attribute to indicate that a function's
    224  * return value only depends on the value of its parameters. This
    225  * can help the compiler optimize out successive calls.
    226  *
    227  * Usage:
    228  *      void  function(int params)  SK_PURE_FUNC;
    229  */
    230 #if defined(__GNUC__)
    231 #  define  SK_PURE_FUNC  __attribute__((pure))
    232 #else
    233 #  define  SK_PURE_FUNC  /* nothing */
    234 #endif
    235 
    236 //////////////////////////////////////////////////////////////////////
    237 
    238 /**
    239  * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
    240  * supports __attribute__((<name>)). Mostly important because
    241  * Clang doesn't support all of GCC attributes.
    242  */
    243 #if defined(__has_attribute)
    244 #   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
    245 #elif defined(__GNUC__)
    246 #   define SK_HAS_ATTRIBUTE(x) 1
    247 #else
    248 #   define SK_HAS_ATTRIBUTE(x) 0
    249 #endif
    250 
    251 /**
    252  * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
    253  * to specify individual optimization level of -O1, if the compiler
    254  * supports it.
    255  *
    256  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
    257  */
    258 #if SK_HAS_ATTRIBUTE(optimize)
    259 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
    260 #else
    261 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
    262 #endif
    263 
    264 #endif
    265