SkPreConfig.h revision 47ebbcc7abf90c943b2d5e05fcedb42913e917e0 
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_ANDROID_NDK) && !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_NDK)
34        #define SK_BUILD_FOR_ANDROID_NDK
35    #elif defined(ANDROID)
36        #define SK_BUILD_FOR_ANDROID
37    #elif defined(linux) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
38          defined(__sun) || defined(__NetBSD__) || defined(__DragonFly__) || \
39          defined(__GLIBC__) || defined(__GNU__)
40        #define SK_BUILD_FOR_UNIX
41    #elif TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
42        #define SK_BUILD_FOR_IOS
43    #else
44        #define SK_BUILD_FOR_MAC
45    #endif
46
47#endif
48
49/* Even if the user only defined the NDK variant we still need to build
50 * the default Android code. Therefore, when attempting to include/exclude
51 * something from the NDK variant check first that we are building for
52 * Android then check the status of the NDK define.
53 */
54#if defined(SK_BUILD_FOR_ANDROID_NDK) && !defined(SK_BUILD_FOR_ANDROID)
55    #define SK_BUILD_FOR_ANDROID
56#endif
57
58// USE_CHROMIUM_SKIA is defined when building Skia for the Chromium
59// browser.
60#if defined(USE_CHROMIUM_SKIA)
61    #define SK_BUILD_FOR_CHROMIUM
62#endif
63
64//////////////////////////////////////////////////////////////////////
65
66#if !defined(SK_DEBUG) && !defined(SK_RELEASE)
67    #ifdef NDEBUG
68        #define SK_RELEASE
69    #else
70        #define SK_DEBUG
71    #endif
72#endif
73
74#ifdef SK_BUILD_FOR_WIN32
75    #if !defined(SK_RESTRICT)
76        #define SK_RESTRICT __restrict
77    #endif
78    #if !defined(SK_WARN_UNUSED_RESULT)
79        #define SK_WARN_UNUSED_RESULT
80    #endif
81    #include "sk_stdint.h"
82#endif
83
84//////////////////////////////////////////////////////////////////////
85
86#if !defined(SK_RESTRICT)
87    #define SK_RESTRICT __restrict__
88#endif
89
90#if !defined(SK_WARN_UNUSED_RESULT)
91    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
92#endif
93
94//////////////////////////////////////////////////////////////////////
95
96#if !defined(SK_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
97    #define SK_SCALAR_IS_FLOAT
98#endif
99
100//////////////////////////////////////////////////////////////////////
101
102#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
103    #if defined (__ppc__) || defined(__ppc64__)
104        #define SK_CPU_BENDIAN
105    #else
106        #define SK_CPU_LENDIAN
107    #endif
108#endif
109
110//////////////////////////////////////////////////////////////////////
111
112/**
113 *  SK_CPU_SSE_LEVEL
114 *
115 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
116 *  On non-intel CPU this should be undefined.
117 */
118
119#define SK_CPU_SSE_LEVEL_SSE1     10
120#define SK_CPU_SSE_LEVEL_SSE2     20
121#define SK_CPU_SSE_LEVEL_SSE3     30
122#define SK_CPU_SSE_LEVEL_SSSE3    31
123
124// Are we in GCC?
125#ifndef SK_CPU_SSE_LEVEL
126    #if defined(__SSE2__)
127        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
128    #elif defined(__SSE3__)
129        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
130    #elif defined(__SSSE3__)
131        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
132    #endif
133#endif
134
135// Are we in VisualStudio?
136#ifndef SK_CPU_SSE_LEVEL
137    #if _M_IX86_FP == 1
138        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
139    #elif _M_IX86_FP >= 2
140        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
141    #endif
142#endif
143
144// 64bit intel guarantees at least SSE2
145#if defined(__x86_64__) || defined(_WIN64)
146    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
147        #undef SK_CPU_SSE_LEVEL
148        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
149    #endif
150#endif
151
152//////////////////////////////////////////////////////////////////////
153// ARM defines
154
155#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
156    #define SK_CPU_ARM
157
158    #if defined(__GNUC__)
159        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
160                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
161                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
162            #define SK_ARM_ARCH 7
163        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
164                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
165                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
166                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
167            #define SK_ARM_ARCH 6
168        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
169                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
170                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
171            #define SK_ARM_ARCH 5
172        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
173            #define SK_ARM_ARCH 4
174        #else
175            #define SK_ARM_ARCH 3
176        #endif
177
178        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
179                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
180                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
181            #define SK_ARM_HAS_EDSP
182        #endif
183    #endif
184#endif
185
186//////////////////////////////////////////////////////////////////////
187
188/**
189 *  THUMB is the only known config where we avoid small branches in
190 *  favor of more complex math.
191 */
192#if !(defined(__arm__) && defined(__thumb__))
193    #define SK_CPU_HAS_CONDITIONAL_INSTR
194#endif
195
196//////////////////////////////////////////////////////////////////////
197
198#if !defined(SKIA_IMPLEMENTATION)
199    #define SKIA_IMPLEMENTATION 0
200#endif
201
202#if defined(SKIA_DLL)
203    #if defined(WIN32)
204        #if SKIA_IMPLEMENTATION
205            #define SK_API __declspec(dllexport)
206        #else
207            #define SK_API __declspec(dllimport)
208        #endif
209    #else
210        #define SK_API __attribute__((visibility("default")))
211    #endif
212#else
213    #define SK_API
214#endif
215
216//////////////////////////////////////////////////////////////////////
217
218/**
219 * Use SK_PURE_FUNC as an attribute to indicate that a function's
220 * return value only depends on the value of its parameters. This
221 * can help the compiler optimize out successive calls.
222 *
223 * Usage:
224 *      void  function(int params)  SK_PURE_FUNC;
225 */
226#if defined(__GNUC__)
227#  define  SK_PURE_FUNC  __attribute__((pure))
228#else
229#  define  SK_PURE_FUNC  /* nothing */
230#endif
231
232//////////////////////////////////////////////////////////////////////
233
234/**
235 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
236 * supports __attribute__((<name>)). Mostly important because
237 * Clang doesn't support all of GCC attributes.
238 */
239#if defined(__has_attribute)
240#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
241#elif defined(__GNUC__)
242#   define SK_HAS_ATTRIBUTE(x) 1
243#else
244#   define SK_HAS_ATTRIBUTE(x) 0
245#endif
246
247/**
248 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
249 * to specify individual optimization level of -O1, if the compiler
250 * supports it.
251 *
252 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
253 */
254#if SK_HAS_ATTRIBUTE(optimize)
255#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
256#else
257#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
258#endif
259
260#endif
261