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