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      1 
      2 /*
      3  * Copyright 2006 The Android Open Source Project
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 #ifndef SkPreConfig_DEFINED
     11 #define SkPreConfig_DEFINED
     12 
     13 #ifdef WEBKIT_VERSION_MIN_REQUIRED
     14     #include "config.h"
     15 #endif
     16 
     17 // Allows embedders that want to disable macros that take arguments to just
     18 // define that symbol to be one of these
     19 //
     20 #define SK_NOTHING_ARG1(arg1)
     21 #define SK_NOTHING_ARG2(arg1, arg2)
     22 #define SK_NOTHING_ARG3(arg1, arg2, arg3)
     23 
     24 //////////////////////////////////////////////////////////////////////
     25 
     26 #if !defined(SK_BUILD_FOR_ANDROID) && !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_PALM) && !defined(SK_BUILD_FOR_WINCE) && !defined(SK_BUILD_FOR_WIN32) && !defined(SK_BUILD_FOR_UNIX) && !defined(SK_BUILD_FOR_MAC) && !defined(SK_BUILD_FOR_SDL) && !defined(SK_BUILD_FOR_BREW)
     27 
     28     #ifdef __APPLE__
     29         #include "TargetConditionals.h"
     30     #endif
     31 
     32     #if defined(PALMOS_SDK_VERSION)
     33         #define SK_BUILD_FOR_PALM
     34     #elif defined(UNDER_CE)
     35         #define SK_BUILD_FOR_WINCE
     36     #elif defined(WIN32)
     37         #define SK_BUILD_FOR_WIN32
     38     #elif defined(__SYMBIAN32__)
     39         #define SK_BUILD_FOR_WIN32
     40     #elif defined(ANDROID)
     41         #define SK_BUILD_FOR_ANDROID
     42     #elif defined(linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
     43           defined(__sun) || defined(__NetBSD__) || defined(__DragonFly__) || \
     44           defined(__GLIBC__) || defined(__GNU__)
     45         #define SK_BUILD_FOR_UNIX
     46     #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
     47         #define SK_BUILD_FOR_IOS
     48     #else
     49         #define SK_BUILD_FOR_MAC
     50     #endif
     51 
     52 #endif
     53 
     54 /* Even if the user only defined the framework variant we still need to build
     55  * the default (NDK-compliant) Android code. Therefore, when attempting to
     56  * include/exclude something from the framework variant check first that we are
     57  * building for Android then check the status of the framework define.
     58  */
     59 #if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
     60     #define SK_BUILD_FOR_ANDROID
     61 #endif
     62 
     63 //////////////////////////////////////////////////////////////////////
     64 
     65 #if !defined(SK_DEBUG) && !defined(SK_RELEASE)
     66     #ifdef NDEBUG
     67         #define SK_RELEASE
     68     #else
     69         #define SK_DEBUG
     70     #endif
     71 #endif
     72 
     73 #ifdef SK_BUILD_FOR_WIN32
     74     #if !defined(SK_RESTRICT)
     75         #define SK_RESTRICT __restrict
     76     #endif
     77     #if !defined(SK_WARN_UNUSED_RESULT)
     78         #define SK_WARN_UNUSED_RESULT
     79     #endif
     80 #endif
     81 
     82 //////////////////////////////////////////////////////////////////////
     83 
     84 #if !defined(SK_RESTRICT)
     85     #define SK_RESTRICT __restrict__
     86 #endif
     87 
     88 #if !defined(SK_WARN_UNUSED_RESULT)
     89     #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
     90 #endif
     91 
     92 //////////////////////////////////////////////////////////////////////
     93 
     94 #if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
     95     #if defined(__sparc) || defined(__sparc__) || \
     96       defined(_POWER) || defined(__powerpc__) || \
     97       defined(__ppc__) || defined(__hppa) || \
     98       defined(__PPC__) || defined(__PPC64__) || \
     99       defined(_MIPSEB) || defined(__ARMEB__) || \
    100       defined(__s390__) || \
    101       (defined(__sh__) && defined(__BIG_ENDIAN__)) || \
    102       (defined(__ia64) && defined(__BIG_ENDIAN__))
    103          #define SK_CPU_BENDIAN
    104     #else
    105         #define SK_CPU_LENDIAN
    106     #endif
    107 #endif
    108 
    109 //////////////////////////////////////////////////////////////////////
    110 
    111 #if defined(__i386) || defined(_M_IX86) ||  defined(__x86_64__) || defined(_M_X64)
    112   #define SK_CPU_X86 1
    113 #endif
    114 
    115 /**
    116  *  SK_CPU_SSE_LEVEL
    117  *
    118  *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
    119  *  On non-intel CPU this should be undefined.
    120  */
    121 
    122 #define SK_CPU_SSE_LEVEL_SSE1     10
    123 #define SK_CPU_SSE_LEVEL_SSE2     20
    124 #define SK_CPU_SSE_LEVEL_SSE3     30
    125 #define SK_CPU_SSE_LEVEL_SSSE3    31
    126 #define SK_CPU_SSE_LEVEL_SSE41    41
    127 #define SK_CPU_SSE_LEVEL_SSE42    42
    128 
    129 // Are we in GCC?
    130 #ifndef SK_CPU_SSE_LEVEL
    131     // These checks must be done in descending order to ensure we set the highest
    132     // available SSE level.
    133     #if defined(__SSE4_2__)
    134         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE42
    135     #elif defined(__SSE4_1__)
    136         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE41
    137     #elif defined(__SSSE3__)
    138         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
    139     #elif defined(__SSE3__)
    140         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
    141     #elif defined(__SSE2__)
    142         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    143     #endif
    144 #endif
    145 
    146 // Are we in VisualStudio?
    147 #ifndef SK_CPU_SSE_LEVEL
    148     // These checks must be done in descending order to ensure we set the highest
    149     // available SSE level. 64-bit intel guarantees at least SSE2 support.
    150     #if 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 
    187         #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
    188                 || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
    189                 || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
    190             #define SK_ARM_HAS_EDSP
    191         #endif
    192     #endif
    193 #endif
    194 
    195 // Disable ARM64 optimizations for iOS due to complications regarding gyp and iOS.
    196 #if defined(__aarch64__) && !defined(SK_BUILD_FOR_IOS)
    197     #define SK_CPU_ARM64
    198 #endif
    199 
    200 // All 64-bit ARM chips have NEON.  Many 32-bit ARM chips do too.
    201 // TODO: Why don't we want NEON on iOS?
    202 #if !defined(SK_ARM_HAS_NEON) && !defined(SK_BUILD_FOR_IOS) && \
    203     (defined(SK_CPU_ARM64) || defined(__ARM_NEON__))
    204     #define SK_ARM_HAS_NEON
    205 #endif
    206 
    207 //////////////////////////////////////////////////////////////////////
    208 
    209 #if !defined(SKIA_IMPLEMENTATION)
    210     #define SKIA_IMPLEMENTATION 0
    211 #endif
    212 
    213 #if defined(SKIA_DLL)
    214     #if defined(WIN32)
    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 
    227 //////////////////////////////////////////////////////////////////////
    228 
    229 /**
    230  * Use SK_PURE_FUNC as an attribute to indicate that a function's
    231  * return value only depends on the value of its parameters. This
    232  * can help the compiler optimize out successive calls.
    233  *
    234  * Usage:
    235  *      void  function(int params)  SK_PURE_FUNC;
    236  */
    237 #if defined(__GNUC__)
    238 #  define  SK_PURE_FUNC  __attribute__((pure))
    239 #else
    240 #  define  SK_PURE_FUNC  /* nothing */
    241 #endif
    242 
    243 //////////////////////////////////////////////////////////////////////
    244 
    245 /**
    246  * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
    247  * supports __attribute__((<name>)). Mostly important because
    248  * Clang doesn't support all of GCC attributes.
    249  */
    250 #if defined(__has_attribute)
    251 #   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
    252 #elif defined(__GNUC__)
    253 #   define SK_HAS_ATTRIBUTE(x) 1
    254 #else
    255 #   define SK_HAS_ATTRIBUTE(x) 0
    256 #endif
    257 
    258 /**
    259  * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
    260  * to specify individual optimization level of -O1, if the compiler
    261  * supports it.
    262  *
    263  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
    264  */
    265 #if SK_HAS_ATTRIBUTE(optimize)
    266 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
    267 #else
    268 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
    269 #endif
    270 
    271 #endif
    272