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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) && !defined(SK_BUILD_FOR_NACL)
     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_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
     95     #define SK_SCALAR_IS_FLOAT
     96 #endif
     97 
     98 //////////////////////////////////////////////////////////////////////
     99 
    100 #if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
    101     #if defined (__ppc__) || defined(__PPC__) || defined(__ppc64__) \
    102         || defined(__PPC64__)
    103         #define SK_CPU_BENDIAN
    104     #else
    105         #define SK_CPU_LENDIAN
    106     #endif
    107 #endif
    108 
    109 //////////////////////////////////////////////////////////////////////
    110 
    111 /**
    112  *  SK_CPU_SSE_LEVEL
    113  *
    114  *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
    115  *  On non-intel CPU this should be undefined.
    116  */
    117 
    118 #define SK_CPU_SSE_LEVEL_SSE1     10
    119 #define SK_CPU_SSE_LEVEL_SSE2     20
    120 #define SK_CPU_SSE_LEVEL_SSE3     30
    121 #define SK_CPU_SSE_LEVEL_SSSE3    31
    122 
    123 // Are we in GCC?
    124 #ifndef SK_CPU_SSE_LEVEL
    125     #if defined(__SSE2__)
    126         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    127     #elif defined(__SSE3__)
    128         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
    129     #elif defined(__SSSE3__)
    130         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
    131     #endif
    132 #endif
    133 
    134 // Are we in VisualStudio?
    135 #ifndef SK_CPU_SSE_LEVEL
    136     #if _M_IX86_FP == 1
    137         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
    138     #elif _M_IX86_FP >= 2
    139         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    140     #endif
    141 #endif
    142 
    143 // 64bit intel guarantees at least SSE2
    144 #if defined(__x86_64__) || defined(_WIN64)
    145     #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
    146         #undef SK_CPU_SSE_LEVEL
    147         #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
    148     #endif
    149 #endif
    150 
    151 //////////////////////////////////////////////////////////////////////
    152 // ARM defines
    153 
    154 #if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
    155     #define SK_CPU_ARM
    156 
    157     #if defined(__GNUC__)
    158         #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
    159                 || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
    160                 || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
    161             #define SK_ARM_ARCH 7
    162         #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
    163                 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
    164                 || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
    165                 || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
    166             #define SK_ARM_ARCH 6
    167         #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
    168                 || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
    169                 || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
    170             #define SK_ARM_ARCH 5
    171         #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
    172             #define SK_ARM_ARCH 4
    173         #else
    174             #define SK_ARM_ARCH 3
    175         #endif
    176 
    177         #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
    178                 || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
    179                 || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
    180             #define SK_ARM_HAS_EDSP
    181         #endif
    182     #endif
    183 #endif
    184 
    185 //////////////////////////////////////////////////////////////////////
    186 
    187 #if !defined(SKIA_IMPLEMENTATION)
    188     #define SKIA_IMPLEMENTATION 0
    189 #endif
    190 
    191 #if defined(SKIA_DLL)
    192     #if defined(WIN32)
    193         #if SKIA_IMPLEMENTATION
    194             #define SK_API __declspec(dllexport)
    195         #else
    196             #define SK_API __declspec(dllimport)
    197         #endif
    198     #else
    199         #define SK_API __attribute__((visibility("default")))
    200     #endif
    201 #else
    202     #define SK_API
    203 #endif
    204 
    205 //////////////////////////////////////////////////////////////////////
    206 
    207 /**
    208  * Use SK_PURE_FUNC as an attribute to indicate that a function's
    209  * return value only depends on the value of its parameters. This
    210  * can help the compiler optimize out successive calls.
    211  *
    212  * Usage:
    213  *      void  function(int params)  SK_PURE_FUNC;
    214  */
    215 #if defined(__GNUC__)
    216 #  define  SK_PURE_FUNC  __attribute__((pure))
    217 #else
    218 #  define  SK_PURE_FUNC  /* nothing */
    219 #endif
    220 
    221 //////////////////////////////////////////////////////////////////////
    222 
    223 /**
    224  * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
    225  * supports __attribute__((<name>)). Mostly important because
    226  * Clang doesn't support all of GCC attributes.
    227  */
    228 #if defined(__has_attribute)
    229 #   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
    230 #elif defined(__GNUC__)
    231 #   define SK_HAS_ATTRIBUTE(x) 1
    232 #else
    233 #   define SK_HAS_ATTRIBUTE(x) 0
    234 #endif
    235 
    236 /**
    237  * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
    238  * to specify individual optimization level of -O1, if the compiler
    239  * supports it.
    240  *
    241  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
    242  */
    243 #if SK_HAS_ATTRIBUTE(optimize)
    244 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
    245 #else
    246 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
    247 #endif
    248 
    249 #endif
    250