SkPreConfig.h revision 4460e75bc7e8c13e0e44ee9330ae8f556d8b0094 
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_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
127// Are we in GCC?
128#ifndef SK_CPU_SSE_LEVEL
129    // These checks must be done in descending order to ensure we set the highest
130    // available SSE level.
131    #if defined(__SSSE3__)
132        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
133    #elif defined(__SSE3__)
134        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
135    #elif defined(__SSE2__)
136        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
137    #endif
138#endif
139
140// Are we in VisualStudio?
141#ifndef SK_CPU_SSE_LEVEL
142    // These checks must be done in descending order to ensure we set the highest
143    // available SSE level.
144    #if defined (_M_IX86_FP)
145        #if _M_IX86_FP >= 2
146            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
147        #elif _M_IX86_FP == 1
148            #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
149        #endif
150    #endif
151#endif
152
153//////////////////////////////////////////////////////////////////////
154// ARM defines
155
156#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
157    #define SK_CPU_ARM
158
159    #if defined(__GNUC__)
160        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
161                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
162                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
163            #define SK_ARM_ARCH 7
164        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
165                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
166                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
167                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
168            #define SK_ARM_ARCH 6
169        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
170                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
171                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
172            #define SK_ARM_ARCH 5
173        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
174            #define SK_ARM_ARCH 4
175        #else
176            #define SK_ARM_ARCH 3
177        #endif
178
179        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
180                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
181                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
182            #define SK_ARM_HAS_EDSP
183        #endif
184    #endif
185#endif
186
187// Disable ARM64 optimizations for iOS due to complications regarding gyp and iOS.
188#if defined(__aarch64__) && !defined(SK_BUILD_FOR_IOS)
189    #define SK_CPU_ARM64
190#endif
191
192//////////////////////////////////////////////////////////////////////
193
194#if !defined(SKIA_IMPLEMENTATION)
195    #define SKIA_IMPLEMENTATION 0
196#endif
197
198#if defined(SKIA_DLL)
199    #if defined(WIN32)
200        #if SKIA_IMPLEMENTATION
201            #define SK_API __declspec(dllexport)
202        #else
203            #define SK_API __declspec(dllimport)
204        #endif
205    #else
206        #define SK_API __attribute__((visibility("default")))
207    #endif
208#else
209    #define SK_API
210#endif
211
212//////////////////////////////////////////////////////////////////////
213
214/**
215 * Use SK_PURE_FUNC as an attribute to indicate that a function's
216 * return value only depends on the value of its parameters. This
217 * can help the compiler optimize out successive calls.
218 *
219 * Usage:
220 *      void  function(int params)  SK_PURE_FUNC;
221 */
222#if defined(__GNUC__)
223#  define  SK_PURE_FUNC  __attribute__((pure))
224#else
225#  define  SK_PURE_FUNC  /* nothing */
226#endif
227
228//////////////////////////////////////////////////////////////////////
229
230/**
231 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
232 * supports __attribute__((<name>)). Mostly important because
233 * Clang doesn't support all of GCC attributes.
234 */
235#if defined(__has_attribute)
236#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
237#elif defined(__GNUC__)
238#   define SK_HAS_ATTRIBUTE(x) 1
239#else
240#   define SK_HAS_ATTRIBUTE(x) 0
241#endif
242
243/**
244 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
245 * to specify individual optimization level of -O1, if the compiler
246 * supports it.
247 *
248 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
249 */
250#if SK_HAS_ATTRIBUTE(optimize)
251#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
252#else
253#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
254#endif
255
256#endif
257