SkPreConfig.h revision 15393c7f34e42bce0ae037d6b1a86d624ce44653 
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)
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//////////////////////////////////////////////////////////////////////
59
60#if !defined(SK_DEBUG) && !defined(SK_RELEASE)
61    #ifdef NDEBUG
62        #define SK_RELEASE
63    #else
64        #define SK_DEBUG
65    #endif
66#endif
67
68#ifdef SK_BUILD_FOR_WIN32
69    #if !defined(SK_RESTRICT)
70        #define SK_RESTRICT __restrict
71    #endif
72    #if !defined(SK_WARN_UNUSED_RESULT)
73        #define SK_WARN_UNUSED_RESULT
74    #endif
75    #include "sk_stdint.h"
76#endif
77
78//////////////////////////////////////////////////////////////////////
79
80#if !defined(SK_RESTRICT)
81    #define SK_RESTRICT __restrict__
82#endif
83
84#if !defined(SK_WARN_UNUSED_RESULT)
85    #define SK_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
86#endif
87
88//////////////////////////////////////////////////////////////////////
89
90#if !defined(SK_SCALAR_IS_FLOAT) && !defined(SK_SCALAR_IS_FIXED)
91    #define SK_SCALAR_IS_FLOAT
92#endif
93
94//////////////////////////////////////////////////////////////////////
95
96#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
97    #if defined (__ppc__) || defined(__ppc64__)
98        #define SK_CPU_BENDIAN
99    #else
100        #define SK_CPU_LENDIAN
101    #endif
102#endif
103
104//////////////////////////////////////////////////////////////////////
105
106/**
107 *  SK_CPU_SSE_LEVEL
108 *
109 *  If defined, SK_CPU_SSE_LEVEL should be set to the highest supported level.
110 *  On non-intel CPU this should be undefined.
111 */
112
113#define SK_CPU_SSE_LEVEL_SSE1     10
114#define SK_CPU_SSE_LEVEL_SSE2     20
115#define SK_CPU_SSE_LEVEL_SSE3     30
116#define SK_CPU_SSE_LEVEL_SSSE3    31
117
118// Are we in GCC?
119#ifndef SK_CPU_SSE_LEVEL
120    #if defined(__SSE2__)
121        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
122    #elif defined(__SSE3__)
123        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE3
124    #elif defined(__SSSE3__)
125        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSSE3
126    #endif
127#endif
128
129// Are we in VisualStudio?
130#ifndef SK_CPU_SSE_LEVEL
131    #if _M_IX86_FP == 1
132        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE1
133    #elif _M_IX86_FP >= 2
134        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
135    #endif
136#endif
137
138// 64bit intel guarantees at least SSE2
139#if defined(__x86_64__) || defined(_WIN64)
140    #if !defined(SK_CPU_SSE_LEVEL) || (SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE2)
141        #undef SK_CPU_SSE_LEVEL
142        #define SK_CPU_SSE_LEVEL    SK_CPU_SSE_LEVEL_SSE2
143    #endif
144#endif
145
146//////////////////////////////////////////////////////////////////////
147// ARM defines
148
149#if defined(__arm__) && (!defined(__APPLE__) || !TARGET_IPHONE_SIMULATOR)
150    #define SK_CPU_ARM
151
152    #if defined(__GNUC__)
153        #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
154                || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
155                || defined(__ARM_ARCH_7EM__) || defined(_ARM_ARCH_7)
156            #define SK_ARM_ARCH 7
157        #elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
158                || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
159                || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
160                || defined(__ARM_ARCH_6M__) || defined(_ARM_ARCH_6)
161            #define SK_ARM_ARCH 6
162        #elif defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
163                || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
164                || defined(__ARM_ARCH_5TEJ__) || defined(_ARM_ARCH_5)
165            #define SK_ARM_ARCH 5
166        #elif defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || defined(_ARM_ARCH_4)
167            #define SK_ARM_ARCH 4
168        #else
169            #define SK_ARM_ARCH 3
170        #endif
171
172        #if defined(__thumb2__) && (SK_ARM_ARCH >= 6) \
173                || !defined(__thumb__) && ((SK_ARM_ARCH > 5) || defined(__ARM_ARCH_5E__) \
174                || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5TEJ__))
175            #define SK_ARM_HAS_EDSP
176        #endif
177    #endif
178#endif
179
180//////////////////////////////////////////////////////////////////////
181
182/**
183 *  THUMB is the only known config where we avoid small branches in
184 *  favor of more complex math.
185 */
186#if !(defined(__arm__) && defined(__thumb__))
187    #define SK_CPU_HAS_CONDITIONAL_INSTR
188#endif
189
190//////////////////////////////////////////////////////////////////////
191
192#if !defined(SKIA_IMPLEMENTATION)
193    #define SKIA_IMPLEMENTATION 0
194#endif
195
196#if defined(SKIA_DLL)
197    #if defined(WIN32)
198        #if defined(SKIA_IMPLEMENTATION)
199            #define SK_API __declspec(dllexport)
200        #else
201            #define SK_API __declspec(dllimport)
202        #endif
203    #else
204        #if defined(SKIA_IMPLEMENTATION)
205            #define SK_API __attribute__((visibility("default")))
206        #else
207            #define SK_API
208        #endif
209    #endif
210#else
211    #define SK_API
212#endif
213
214//////////////////////////////////////////////////////////////////////
215
216/**
217 * Use SK_PURE_FUNC as an attribute to indicate that a function's
218 * return value only depends on the value of its parameters. This
219 * can help the compiler optimize out successive calls.
220 *
221 * Usage:
222 *      void  function(int params)  SK_PURE_FUNC;
223 */
224#if defined(__GNUC__)
225#  define  SK_PURE_FUNC  __attribute__((pure))
226#else
227#  define  SK_PURE_FUNC  /* nothing */
228#endif
229
230//////////////////////////////////////////////////////////////////////
231
232/**
233 * SK_HAS_ATTRIBUTE(<name>) should return true iff the compiler
234 * supports __attribute__((<name>)). Mostly important because
235 * Clang doesn't support all of GCC attributes.
236 */
237#if defined(__has_attribute)
238#   define SK_HAS_ATTRIBUTE(x) __has_attribute(x)
239#elif defined(__GNUC__)
240#   define SK_HAS_ATTRIBUTE(x) 1
241#else
242#   define SK_HAS_ATTRIBUTE(x) 0
243#endif
244
245/**
246 * SK_ATTRIBUTE_OPTIMIZE_O1 can be used as a function attribute
247 * to specify individual optimization level of -O1, if the compiler
248 * supports it.
249 *
250 * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
251 */
252#if SK_HAS_ATTRIBUTE(optimize)
253#   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
254#else
255#   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
256#endif
257
258#endif
259