SkPreConfig.h revision 1311f7e7f43d00cd1fa6802a414e987e60e6d67d 
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//////////////////////////////////////////////////////////////////////
18
19#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)
20
21    #ifdef __APPLE__
22        #include "TargetConditionals.h"
23    #endif
24
25    #if defined(PALMOS_SDK_VERSION)
26        #define SK_BUILD_FOR_PALM
27    #elif defined(UNDER_CE)
28        #define SK_BUILD_FOR_WINCE
29    #elif defined(WIN32)
30        #define SK_BUILD_FOR_WIN32
31    #elif defined(__SYMBIAN32__)
32        #define SK_BUILD_FOR_WIN32
33    #elif defined(ANDROID)
34        #define SK_BUILD_FOR_ANDROID
35    #elif defined(linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
36          defined(__sun) || defined(__NetBSD__) || defined(__DragonFly__) || \
37          defined(__GLIBC__) || defined(__GNU__)
38        #define SK_BUILD_FOR_UNIX
39    #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
40        #define SK_BUILD_FOR_IOS
41    #else
42        #define SK_BUILD_FOR_MAC
43    #endif
44
45#endif
46
47/* Even if the user only defined the framework variant we still need to build
48 * the default (NDK-compliant) Android code. Therefore, when attempting to
49 * include/exclude something from the framework variant check first that we are
50 * building for Android then check the status of the framework define.
51 */
52#if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
53    #define SK_BUILD_FOR_ANDROID
54#endif
55
56
57// USE_CHROMIUM_SKIA is defined when building Skia for the Chromium
58// browser.
59#if defined(USE_CHROMIUM_SKIA)
60    #define SK_BUILD_FOR_CHROMIUM
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    #include "sk_stdint.h"
81#endif
82
83//////////////////////////////////////////////////////////////////////
84
85#if !defined(SK_RESTRICT)
86    #define SK_RESTRICT __restrict__
87#endif
88
89#if !defined(SK_WARN_UNUSED_RESULT)
90    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
91#endif
92
93//////////////////////////////////////////////////////////////////////
94
95#if !defined(SK_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
96    #define SK_SCALAR_IS_FLOAT
97#endif
98
99//////////////////////////////////////////////////////////////////////
100
101#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
102    #if defined (__ppc__) || 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/**
188 *  THUMB is the only known config where we avoid small branches in
189 *  favor of more complex math.
190 */
191#if !(defined(__arm__) && defined(__thumb__))
192    #define SK_CPU_HAS_CONDITIONAL_INSTR
193#endif
194
195//////////////////////////////////////////////////////////////////////
196
197#if !defined(SKIA_IMPLEMENTATION)
198    #define SKIA_IMPLEMENTATION 0
199#endif
200
201#if defined(SKIA_DLL)
202    #if defined(WIN32)
203        #if SKIA_IMPLEMENTATION
204            #define SK_API __declspec(dllexport)
205        #else
206            #define SK_API __declspec(dllimport)
207        #endif
208    #else
209        #define SK_API __attribute__((visibility("default")))
210    #endif
211#else
212    #define SK_API
213#endif
214
215//////////////////////////////////////////////////////////////////////
216
217/**
218 * Use SK_PURE_FUNC as an attribute to indicate that a function's
219 * return value only depends on the value of its parameters. This
220 * can help the compiler optimize out successive calls.
221 *
222 * Usage:
223 *      void  function(int params)  SK_PURE_FUNC;
224 */
225#if defined(__GNUC__)
226#  define  SK_PURE_FUNC  __attribute__((pure))
227#else
228#  define  SK_PURE_FUNC  /* nothing */
229#endif
230
231//////////////////////////////////////////////////////////////////////
232
233/**
234 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
235 * supports __attribute__((<name>)). Mostly important because
236 * Clang doesn't support all of GCC attributes.
237 */
238#if defined(__has_attribute)
239#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
240#elif defined(__GNUC__)
241#   define SK_HAS_ATTRIBUTE(x) 1
242#else
243#   define SK_HAS_ATTRIBUTE(x) 0
244#endif
245
246/**
247 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
248 * to specify individual optimization level of -O1, if the compiler
249 * supports it.
250 *
251 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
252 */
253#if SK_HAS_ATTRIBUTE(optimize)
254#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
255#else
256#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
257#endif
258
259#endif
260