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#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//////////////////////////////////////////////////////////////////////
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