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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
(...skipping 10 matching lines...) Expand all Loading... |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_GLOBALS_H_ | 28 #ifndef V8_GLOBALS_H_ |
29 #define V8_GLOBALS_H_ | 29 #define V8_GLOBALS_H_ |
30 | 30 |
31 // ---------------------------------------------------------------------------- | 31 // Define V8_INFINITY |
32 // Operating system detection (V8_OS_x) | 32 #define V8_INFINITY INFINITY |
33 // | |
34 // ANDROID - Android | |
35 // BSD4 - Any BSD 4.4 system | |
36 // CYGWIN - Cygwin | |
37 // DARWIN - Darwin / Mac OS X | |
38 // FREEBSD - FreeBSD | |
39 // LINUX - Linux | |
40 // NACL - Native Client | |
41 // NETBSD - NetBSD | |
42 // OPENBSD - OpenBSD | |
43 // SOLARIS - Solaris | |
44 // UNIX - Any UNIX BSD/SYSV system | |
45 // WIN32 - Win32 (Windows 2000/XP/Vista/7 and Windows Server 2003/2008) | |
46 | 33 |
47 #if defined(ANDROID) || defined(__ANDROID__) | 34 // GCC specific stuff |
48 # define V8_OS_ANDROID 1 | 35 #ifdef __GNUC__ |
49 # define V8_OS_LINUX 1 | 36 |
50 # define V8_OS_UNIX 1 | 37 #define __GNUC_VERSION_FOR_INFTY__ (__GNUC__ * 10000 + __GNUC_MINOR__ * 100) |
51 #elif defined(__APPLE__) && defined(__MACH__) | 38 |
52 # define V8_OS_DARWIN 1 | 39 // Unfortunately, the INFINITY macro cannot be used with the '-pedantic' |
53 # define V8_OS_BSD4 1 | 40 // warning flag and certain versions of GCC due to a bug: |
54 # define V8_OS_UNIX 1 | 41 // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11931 |
55 #elif defined(__CYGWIN__) | 42 // For now, we use the more involved template-based version from <limits>, but |
56 # define V8_OS_CYGWIN 1 | 43 // only when compiling with GCC versions affected by the bug (2.96.x - 4.0.x) |
57 # define V8_OS_UNIX 1 | 44 // __GNUC_PREREQ is not defined in GCC for Mac OS X, so we define our own macro |
58 #elif defined(WIN64) || defined(_WIN64) || defined(__WIN64__) | 45 #if __GNUC_VERSION_FOR_INFTY__ >= 29600 && __GNUC_VERSION_FOR_INFTY__ < 40100 |
59 # define V8_OS_WIN32 1 | 46 #include <limits> |
60 # define V8_OS_WIN64 1 | 47 #undef V8_INFINITY |
61 #elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || \ | 48 #define V8_INFINITY std::numeric_limits<double>::infinity() |
62 (defined(__MWERKS__) && defined(__INTEL__)) | 49 #endif |
63 # define V8_OS_WIN32 1 | 50 #undef __GNUC_VERSION_FOR_INFTY__ |
64 #elif defined(__sun) || defined(sun) | 51 |
65 # define V8_OS_SOLARIS 1 | 52 #endif // __GNUC__ |
66 # define V8_OS_UNIX 1 | 53 |
67 #elif defined(__native_client__) | 54 #ifdef _MSC_VER |
68 # define V8_OS_NACL 1 | 55 #undef V8_INFINITY |
69 # define V8_OS_UNIX 1 | 56 #define V8_INFINITY HUGE_VAL |
70 #elif defined(__linux__) || defined(__linux) | |
71 # define V8_OS_LINUX 1 | |
72 # define V8_OS_UNIX 1 | |
73 #elif defined(__FreeBSD__) || defined(__DragonFly__) | |
74 # define V8_OS_FREEBSD 1 | |
75 # define V8_OS_BSD4 1 | |
76 # define V8_OS_UNIX 1 | |
77 #elif defined(__NetBSD__) | |
78 # define V8_OS_NETBSD 1 | |
79 # define V8_OS_BSD4 1 | |
80 # define V8_OS_UNIX 1 | |
81 #elif defined(__OpenBSD__) | |
82 # define V8_OS_OPENBSD 1 | |
83 # define V8_OS_BSD4 1 | |
84 # define V8_OS_UNIX 1 | |
85 #else | |
86 # error Operating system was not detected as supported by v8 | |
87 #endif | 57 #endif |
88 | 58 |
89 | 59 |
90 // ---------------------------------------------------------------------------- | 60 #include "../include/v8stdint.h" |
91 // Compiler detection (V8_CC_x) | |
92 // | |
93 // CLANG - C++ front-end for the LLVM compiler | |
94 // GNU - GNU C++ or compatible | |
95 // INTEL - Intel C++ for Linux or Windows | |
96 // MINGW - Minimalistic GNU for Windows Compiler | |
97 // MIPS - MIPSpro C++ | |
98 // MSVC - Microsoft Visual C/C++ or compatible | |
99 // RVCT - ARM Realview Compiler Suite | |
100 | 61 |
101 #if defined(_MSC_VER) | 62 namespace v8 { |
102 # define V8_CC_MSVC 1 | 63 namespace internal { |
103 # if defined(__INTEL_COMPILER) | |
104 # define V8_CC_INTEL 1 | |
105 # endif | |
106 #elif defined(__GNUC__) | |
107 # define V8_CC_GNU 1 | |
108 # if defined(__MINGW64__) | |
109 # define V8_CC_MINGW 1 | |
110 # define V8_CC_MINGW64 1 | |
111 # elif defined(__MINGW32__) | |
112 # define V8_CC_MINGW 1 | |
113 # define V8_CC_MINGW32 1 | |
114 # elif defined(__ARMCC__) || defined(__CC_ARM) | |
115 # define V8_CC_RVCT 1 // ARM Realview Compiler Suite also masquerades as GCC | |
116 # elif defined(__INTEL_COMPILER) | |
117 # define V8_CC_INTEL 1 // Intel C++ also masquerades as GCC 3.2.0 | |
118 # elif defined(__clang__) | |
119 # define V8_CC_CLANG 1 // Clang also masquerades as GCC 4.2.1 | |
120 # ifndef __has_extension | |
121 # define __has_extension __has_feature // Compatibility with older releases | |
122 # endif | |
123 # endif | |
124 #elif defined(__ARMCC__) || defined(__CC_ARM) | |
125 # define V8_CC_RVCT 1 | |
126 #elif defined(__INTEL_COMPILER) | |
127 # define V8_CC_INTEL 1 | |
128 #elif defined(__SUNPRO_CC) || defined(__SUNPRO_C) | |
129 # define V8_CC_SUN 1 | |
130 #else | |
131 # error Compiler was not detected as supported by v8 | |
132 #endif | |
133 | 64 |
134 #if V8_CC_GNU | 65 // Processor architecture detection. For more info on what's defined, see: |
135 # define V8_GNUC_PREREQ(major, minor) \ | |
136 (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) | |
137 #else | |
138 # define V8_GNUC_PREREQ(major, minor) 0 | |
139 #endif // V8_CC_GNU | |
140 | |
141 | |
142 // ---------------------------------------------------------------------------- | |
143 // Compiler features | |
144 | |
145 // C++11 deleted functions | |
146 #if __cplusplus >= 201103L | |
147 # define V8_CXX_DELETED_FUNCTIONS 1 | |
148 #elif V8_CC_CLANG | |
149 # define V8_CXX_DELETED_FUNCTIONS __has_feature(cxx_deleted_functions) | |
150 #else | |
151 # define V8_CXX_DELETED_FUNCTIONS (defined(__GXX_EXPERIMENTAL_CXX0X__) && \ | |
152 V8_GNUC_PREREQ(4, 4)) | |
153 #endif | |
154 | |
155 // C++11 static_assert() | |
156 #if __cplusplus >= 201103L | |
157 # define V8_CXX_STATIC_ASSERT 1 | |
158 #elif V8_CC_CLANG | |
159 # define V8_CXX_STATIC_ASSERT (__has_extension(cxx_static_assert) || \ | |
160 __has_feature(cxx_static_assert)) | |
161 #else | |
162 # define V8_CXX_STATIC_ASSERT (defined(__GXX_EXPERIMENTAL_CXX0X__) && \ | |
163 V8_GNUC_PREREQ(4, 3)) | |
164 #endif | |
165 | |
166 | |
167 // ---------------------------------------------------------------------------- | |
168 // Host architecture detection. For more info on what's defined, see: | |
169 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx | 66 // http://msdn.microsoft.com/en-us/library/b0084kay.aspx |
170 // http://www.agner.org/optimize/calling_conventions.pdf | 67 // http://www.agner.org/optimize/calling_conventions.pdf |
171 // or with gcc, run: "echo | gcc -E -dM -" | 68 // or with gcc, run: "echo | gcc -E -dM -" |
172 | |
173 #if defined(_M_X64) || defined(__x86_64__) | 69 #if defined(_M_X64) || defined(__x86_64__) |
174 # if V8_OS_NACL | 70 #if defined(__native_client__) |
175 // For Native Client builds of V8, use V8_TARGET_ARCH_ARM, so that V8 | 71 // For Native Client builds of V8, use V8_TARGET_ARCH_ARM, so that V8 |
176 // generates ARM machine code, together with a portable ARM simulator | 72 // generates ARM machine code, together with a portable ARM simulator |
177 // compiled for the host architecture in question. | 73 // compiled for the host architecture in question. |
178 // | 74 // |
179 // Since Native Client is ILP-32 on all architectures we use | 75 // Since Native Client is ILP-32 on all architectures we use |
180 // V8_HOST_ARCH_IA32 on both 32- and 64-bit x86. | 76 // V8_HOST_ARCH_IA32 on both 32- and 64-bit x86. |
181 # define V8_HOST_ARCH_IA32 1 | 77 #define V8_HOST_ARCH_IA32 1 |
182 # define V8_HOST_ARCH_32_BIT 1 | 78 #define V8_HOST_ARCH_32_BIT 1 |
183 # define V8_HOST_CAN_READ_UNALIGNED 1 | 79 #define V8_HOST_CAN_READ_UNALIGNED 1 |
184 # else | 80 #else |
185 # define V8_HOST_ARCH_X64 1 | 81 #define V8_HOST_ARCH_X64 1 |
186 # define V8_HOST_ARCH_64_BIT 1 | 82 #define V8_HOST_ARCH_64_BIT 1 |
187 # define V8_HOST_CAN_READ_UNALIGNED 1 | 83 #define V8_HOST_CAN_READ_UNALIGNED 1 |
188 # endif // V8_OS_NACL | 84 #endif // __native_client__ |
189 #elif defined(_M_IX86) || defined(__i386__) | 85 #elif defined(_M_IX86) || defined(__i386__) |
190 # define V8_HOST_ARCH_IA32 1 | 86 #define V8_HOST_ARCH_IA32 1 |
191 # define V8_HOST_ARCH_32_BIT 1 | 87 #define V8_HOST_ARCH_32_BIT 1 |
192 # define V8_HOST_CAN_READ_UNALIGNED 1 | 88 #define V8_HOST_CAN_READ_UNALIGNED 1 |
193 #elif defined(__ARMEL__) | 89 #elif defined(__ARMEL__) |
194 # define V8_HOST_ARCH_ARM 1 | 90 #define V8_HOST_ARCH_ARM 1 |
195 # define V8_HOST_ARCH_32_BIT 1 | 91 #define V8_HOST_ARCH_32_BIT 1 |
196 #elif defined(__MIPSEL__) | 92 #elif defined(__MIPSEL__) |
197 # define V8_HOST_ARCH_MIPS 1 | 93 #define V8_HOST_ARCH_MIPS 1 |
198 # define V8_HOST_ARCH_32_BIT 1 | 94 #define V8_HOST_ARCH_32_BIT 1 |
199 #else | 95 #else |
200 # error Host architecture was not detected as supported by v8 | 96 #error Host architecture was not detected as supported by v8 |
201 #endif | 97 #endif |
202 | 98 |
203 #if defined(__ARM_ARCH_7A__) || \ | 99 #if defined(__ARM_ARCH_7A__) || \ |
204 defined(__ARM_ARCH_7R__) || \ | 100 defined(__ARM_ARCH_7R__) || \ |
205 defined(__ARM_ARCH_7__) | 101 defined(__ARM_ARCH_7__) |
206 # define CAN_USE_ARMV7_INSTRUCTIONS 1 | 102 # define CAN_USE_ARMV7_INSTRUCTIONS 1 |
207 # ifndef CAN_USE_VFP3_INSTRUCTIONS | 103 # ifndef CAN_USE_VFP3_INSTRUCTIONS |
208 # define CAN_USE_VFP3_INSTRUCTIONS 1 | 104 # define CAN_USE_VFP3_INSTRUCTIONS |
209 # endif | 105 # endif |
210 #endif | 106 #endif |
211 | 107 |
212 | 108 |
213 // ---------------------------------------------------------------------------- | |
214 // Target architecture detection. This may be set externally. If not, detect | 109 // Target architecture detection. This may be set externally. If not, detect |
215 // in the same way as the host architecture, that is, target the native | 110 // in the same way as the host architecture, that is, target the native |
216 // environment as presented by the compiler. | 111 // environment as presented by the compiler. |
217 | |
218 #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && \ | 112 #if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && \ |
219 !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_MIPS | 113 !V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_MIPS |
220 # if defined(_M_X64) || defined(__x86_64__) | 114 #if defined(_M_X64) || defined(__x86_64__) |
221 # define V8_TARGET_ARCH_X64 1 | 115 #define V8_TARGET_ARCH_X64 1 |
222 # elif defined(_M_IX86) || defined(__i386__) | 116 #elif defined(_M_IX86) || defined(__i386__) |
223 # define V8_TARGET_ARCH_IA32 1 | 117 #define V8_TARGET_ARCH_IA32 1 |
224 # elif defined(__ARMEL__) | 118 #elif defined(__ARMEL__) |
225 # define V8_TARGET_ARCH_ARM 1 | 119 #define V8_TARGET_ARCH_ARM 1 |
226 # elif defined(__MIPSEL__) | 120 #elif defined(__MIPSEL__) |
227 # define V8_TARGET_ARCH_MIPS 1 | 121 #define V8_TARGET_ARCH_MIPS 1 |
228 # else | 122 #else |
229 # error Target architecture was not detected as supported by v8 | 123 #error Target architecture was not detected as supported by v8 |
230 # endif | 124 #endif |
231 #endif | 125 #endif |
232 | 126 |
233 // Check for supported combinations of host and target architectures. | 127 // Check for supported combinations of host and target architectures. |
234 #if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32 | 128 #if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32 |
235 # error Target architecture ia32 is only supported on ia32 host | 129 #error Target architecture ia32 is only supported on ia32 host |
236 #elif V8_TARGET_ARCH_X64 && !V8_HOST_ARCH_X64 | 130 #endif |
237 # error Target architecture x64 is only supported on x64 host | 131 #if V8_TARGET_ARCH_X64 && !V8_HOST_ARCH_X64 |
238 #elif V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM) | 132 #error Target architecture x64 is only supported on x64 host |
239 # error Target architecture arm is only supported on arm and ia32 host | 133 #endif |
240 #elif V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS) | 134 #if (V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM)) |
241 # error Target architecture mips is only supported on mips and ia32 host | 135 #error Target architecture arm is only supported on arm and ia32 host |
| 136 #endif |
| 137 #if (V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS)) |
| 138 #error Target architecture mips is only supported on mips and ia32 host |
242 #endif | 139 #endif |
243 | 140 |
244 // Determine whether we are running in a simulated environment. | 141 // Determine whether we are running in a simulated environment. |
245 // Setting USE_SIMULATOR explicitly from the build script will force | 142 // Setting USE_SIMULATOR explicitly from the build script will force |
246 // the use of a simulated environment. | 143 // the use of a simulated environment. |
247 #if !defined(USE_SIMULATOR) | 144 #if !defined(USE_SIMULATOR) |
248 # if V8_TARGET_ARCH_ARM && !V8_HOST_ARCH_ARM | 145 #if (V8_TARGET_ARCH_ARM && !V8_HOST_ARCH_ARM) |
249 # define USE_SIMULATOR 1 | 146 #define USE_SIMULATOR 1 |
250 # elif V8_TARGET_ARCH_MIPS && !V8_HOST_ARCH_MIPS | 147 #endif |
251 # define USE_SIMULATOR 1 | 148 #if (V8_TARGET_ARCH_MIPS && !V8_HOST_ARCH_MIPS) |
252 # endif | 149 #define USE_SIMULATOR 1 |
| 150 #endif |
253 #endif | 151 #endif |
254 | 152 |
255 // Determine architecture endiannes (we only support little-endian). | 153 // Determine architecture endiannes (we only support little-endian). |
256 #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X64 || \ | 154 #if V8_TARGET_ARCH_IA32 |
257 V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_MIPS | 155 #define V8_TARGET_LITTLE_ENDIAN 1 |
258 # define V8_TARGET_LITTLE_ENDIAN 1 | 156 #elif V8_TARGET_ARCH_X64 |
| 157 #define V8_TARGET_LITTLE_ENDIAN 1 |
| 158 #elif V8_TARGET_ARCH_ARM |
| 159 #define V8_TARGET_LITTLE_ENDIAN 1 |
| 160 #elif V8_TARGET_ARCH_MIPS |
| 161 #define V8_TARGET_LITTLE_ENDIAN 1 |
259 #else | 162 #else |
260 # error Unknown target architecture endiannes | 163 #error Unknown target architecture endiannes |
261 #endif | 164 #endif |
262 | 165 |
263 | |
264 // ---------------------------------------------------------------------------- | |
265 // Define our own macros for writing 64-bit constants. This is less fragile | |
266 // than defining __STDC_CONSTANT_MACROS before including <stdint.h>, and it | |
267 // works on compilers that don't have it (like MSVC). | |
268 #if V8_HOST_ARCH_64_BIT | |
269 # if V8_CC_MSVC | |
270 # define V8_UINT64_C(x) (x ## UI64) | |
271 # define V8_INT64_C(x) (x ## I64) | |
272 # define V8_INTPTR_C(x) (x ## I64) | |
273 # define V8_PTR_PREFIX "ll" | |
274 # elif V8_CC_MINGW | |
275 # define V8_UINT64_C(x) (x ## ULL) | |
276 # define V8_INT64_C(x) (x ## LL) | |
277 # define V8_INTPTR_C(x) (x ## LL) | |
278 # define V8_PTR_PREFIX "I64" | |
279 # else | |
280 # define V8_UINT64_C(x) (x ## UL) | |
281 # define V8_INT64_C(x) (x ## L) | |
282 # define V8_INTPTR_C(x) (x ## L) | |
283 # define V8_PTR_PREFIX "l" | |
284 # endif | |
285 #else // V8_HOST_ARCH_64_BIT | |
286 # define V8_INTPTR_C(x) (x) | |
287 # define V8_PTR_PREFIX "" | |
288 #endif // V8_HOST_ARCH_64_BIT | |
289 | |
290 // The following macro works on both 32 and 64-bit platforms. | |
291 // Usage: instead of writing 0x1234567890123456 | |
292 // write V8_2PART_UINT64_C(0x12345678,90123456); | |
293 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) | |
294 | |
295 #if V8_OS_DARWIN | |
296 // Fix for Mac OS X defining uintptr_t as "unsigned long": | |
297 # define V8PRIxPTR "lx" | |
298 #else | |
299 # define V8PRIxPTR V8_PTR_PREFIX "x" | |
300 #endif // V8_OS_DARWIN | |
301 #define V8PRIdPTR V8_PTR_PREFIX "d" | |
302 #define V8PRIuPTR V8_PTR_PREFIX "u" | |
303 | |
304 | |
305 // ---------------------------------------------------------------------------- | |
306 // Define V8_INFINITY | |
307 #if V8_GNUC_PREREQ(2, 96) && !V8_GNUC_PREREQ(4, 1) | |
308 // Unfortunately, the INFINITY macro cannot be used with the '-pedantic' | |
309 // warning flag and certain versions of GCC due to a bug: | |
310 // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11931 | |
311 // For now, we use the more involved template-based version from <limits>, but | |
312 // only when compiling with GCC versions affected by the bug (2.96.x - 4.0.x) | |
313 # include <limits> | |
314 # define V8_INFINITY std::numeric_limits<double>::infinity() | |
315 #elif V8_CC_MSVC | |
316 # define V8_INFINITY HUGE_VAL | |
317 #else | |
318 # define V8_INFINITY INFINITY | |
319 #endif | |
320 | |
321 | |
322 #include "../include/v8stdint.h" | |
323 | |
324 namespace v8 { | |
325 namespace internal { | |
326 | |
327 // Support for alternative bool type. This is only enabled if the code is | 166 // Support for alternative bool type. This is only enabled if the code is |
328 // compiled with USE_MYBOOL defined. This catches some nasty type bugs. | 167 // compiled with USE_MYBOOL defined. This catches some nasty type bugs. |
329 // For instance, 'bool b = "false";' results in b == true! This is a hidden | 168 // For instance, 'bool b = "false";' results in b == true! This is a hidden |
330 // source of bugs. | 169 // source of bugs. |
331 // However, redefining the bool type does have some negative impact on some | 170 // However, redefining the bool type does have some negative impact on some |
332 // platforms. It gives rise to compiler warnings (i.e. with | 171 // platforms. It gives rise to compiler warnings (i.e. with |
333 // MSVC) in the API header files when mixing code that uses the standard | 172 // MSVC) in the API header files when mixing code that uses the standard |
334 // bool with code that uses the redefined version. | 173 // bool with code that uses the redefined version. |
335 // This does not actually belong in the platform code, but needs to be | 174 // This does not actually belong in the platform code, but needs to be |
336 // defined here because the platform code uses bool, and platform.h is | 175 // defined here because the platform code uses bool, and platform.h is |
337 // include very early in the main include file. | 176 // include very early in the main include file. |
338 | 177 |
339 #ifdef USE_MYBOOL | 178 #ifdef USE_MYBOOL |
340 typedef unsigned int __my_bool__; | 179 typedef unsigned int __my_bool__; |
341 #define bool __my_bool__ // use 'indirection' to avoid name clashes | 180 #define bool __my_bool__ // use 'indirection' to avoid name clashes |
342 #endif | 181 #endif |
343 | 182 |
344 typedef uint8_t byte; | 183 typedef uint8_t byte; |
345 typedef byte* Address; | 184 typedef byte* Address; |
346 | 185 |
| 186 // Define our own macros for writing 64-bit constants. This is less fragile |
| 187 // than defining __STDC_CONSTANT_MACROS before including <stdint.h>, and it |
| 188 // works on compilers that don't have it (like MSVC). |
| 189 #if V8_HOST_ARCH_64_BIT |
| 190 #if defined(_MSC_VER) |
| 191 #define V8_UINT64_C(x) (x ## UI64) |
| 192 #define V8_INT64_C(x) (x ## I64) |
| 193 #define V8_INTPTR_C(x) (x ## I64) |
| 194 #define V8_PTR_PREFIX "ll" |
| 195 #elif defined(__MINGW64__) |
| 196 #define V8_UINT64_C(x) (x ## ULL) |
| 197 #define V8_INT64_C(x) (x ## LL) |
| 198 #define V8_INTPTR_C(x) (x ## LL) |
| 199 #define V8_PTR_PREFIX "I64" |
| 200 #else |
| 201 #define V8_UINT64_C(x) (x ## UL) |
| 202 #define V8_INT64_C(x) (x ## L) |
| 203 #define V8_INTPTR_C(x) (x ## L) |
| 204 #define V8_PTR_PREFIX "l" |
| 205 #endif |
| 206 #else // V8_HOST_ARCH_64_BIT |
| 207 #define V8_INTPTR_C(x) (x) |
| 208 #define V8_PTR_PREFIX "" |
| 209 #endif // V8_HOST_ARCH_64_BIT |
| 210 |
| 211 // The following macro works on both 32 and 64-bit platforms. |
| 212 // Usage: instead of writing 0x1234567890123456 |
| 213 // write V8_2PART_UINT64_C(0x12345678,90123456); |
| 214 #define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u)) |
| 215 |
| 216 #define V8PRIxPTR V8_PTR_PREFIX "x" |
| 217 #define V8PRIdPTR V8_PTR_PREFIX "d" |
| 218 #define V8PRIuPTR V8_PTR_PREFIX "u" |
| 219 |
| 220 // Fix for Mac OS X defining uintptr_t as "unsigned long": |
| 221 #if defined(__APPLE__) && defined(__MACH__) |
| 222 #undef V8PRIxPTR |
| 223 #define V8PRIxPTR "lx" |
| 224 #endif |
| 225 |
| 226 #if (defined(__APPLE__) && defined(__MACH__)) || \ |
| 227 defined(__FreeBSD__) || defined(__OpenBSD__) |
| 228 #define USING_BSD_ABI |
| 229 #endif |
| 230 |
347 // ----------------------------------------------------------------------------- | 231 // ----------------------------------------------------------------------------- |
348 // Constants | 232 // Constants |
349 | 233 |
350 const int KB = 1024; | 234 const int KB = 1024; |
351 const int MB = KB * KB; | 235 const int MB = KB * KB; |
352 const int GB = KB * KB * KB; | 236 const int GB = KB * KB * KB; |
353 const int kMaxInt = 0x7FFFFFFF; | 237 const int kMaxInt = 0x7FFFFFFF; |
354 const int kMinInt = -kMaxInt - 1; | 238 const int kMinInt = -kMaxInt - 1; |
355 | 239 |
356 const uint32_t kMaxUInt32 = 0xFFFFFFFFu; | 240 const uint32_t kMaxUInt32 = 0xFFFFFFFFu; |
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439 | 323 |
440 | 324 |
441 // FUNCTION_CAST<F>(addr) casts an address into a function | 325 // FUNCTION_CAST<F>(addr) casts an address into a function |
442 // of type F. Used to invoke generated code from within C. | 326 // of type F. Used to invoke generated code from within C. |
443 template <typename F> | 327 template <typename F> |
444 F FUNCTION_CAST(Address addr) { | 328 F FUNCTION_CAST(Address addr) { |
445 return reinterpret_cast<F>(reinterpret_cast<intptr_t>(addr)); | 329 return reinterpret_cast<F>(reinterpret_cast<intptr_t>(addr)); |
446 } | 330 } |
447 | 331 |
448 | 332 |
449 #if V8_CXX_DELETED_FUNCTIONS | 333 #if __cplusplus >= 201103L |
450 # define DISALLOW_BY_DELETE = delete | 334 #define DISALLOW_BY_DELETE = delete |
451 #else | 335 #else |
452 # define DISALLOW_BY_DELETE | 336 #define DISALLOW_BY_DELETE |
453 #endif | 337 #endif |
454 | 338 |
455 | 339 |
456 // A macro to disallow the evil copy constructor and operator= functions | 340 // A macro to disallow the evil copy constructor and operator= functions |
457 // This should be used in the private: declarations for a class | 341 // This should be used in the private: declarations for a class |
458 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ | 342 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ |
459 TypeName(const TypeName&) DISALLOW_BY_DELETE; \ | 343 TypeName(const TypeName&) DISALLOW_BY_DELETE; \ |
460 void operator=(const TypeName&) DISALLOW_BY_DELETE | 344 void operator=(const TypeName&) DISALLOW_BY_DELETE |
461 | 345 |
462 | 346 |
463 // A macro to disallow all the implicit constructors, namely the | 347 // A macro to disallow all the implicit constructors, namely the |
464 // default constructor, copy constructor and operator= functions. | 348 // default constructor, copy constructor and operator= functions. |
465 // | 349 // |
466 // This should be used in the private: declarations for a class | 350 // This should be used in the private: declarations for a class |
467 // that wants to prevent anyone from instantiating it. This is | 351 // that wants to prevent anyone from instantiating it. This is |
468 // especially useful for classes containing only static methods. | 352 // especially useful for classes containing only static methods. |
469 #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ | 353 #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ |
470 TypeName() DISALLOW_BY_DELETE; \ | 354 TypeName() DISALLOW_BY_DELETE; \ |
471 DISALLOW_COPY_AND_ASSIGN(TypeName) | 355 DISALLOW_COPY_AND_ASSIGN(TypeName) |
472 | 356 |
473 | 357 |
474 // Define used for helping GCC to make better inlining. Don't bother for debug | 358 // Define used for helping GCC to make better inlining. Don't bother for debug |
475 // builds. On GCC 3.4.5 using __attribute__((always_inline)) causes compilation | 359 // builds. On GCC 3.4.5 using __attribute__((always_inline)) causes compilation |
476 // errors in debug build. | 360 // errors in debug build. |
477 #if V8_GNUC_PREREQ(4, 0) && !defined(DEBUG) | 361 #if defined(__GNUC__) && !defined(DEBUG) |
478 # define INLINE(header) inline header __attribute__((always_inline)) | 362 #if (__GNUC__ >= 4) |
479 # define NO_INLINE(header) header __attribute__((noinline)) | 363 #define INLINE(header) inline header __attribute__((always_inline)) |
480 #elif V8_CC_GNU && !defined(DEBUG) | 364 #define NO_INLINE(header) header __attribute__((noinline)) |
481 # define INLINE(header) inline __attribute__((always_inline)) header | |
482 # define NO_INLINE(header) __attribute__((noinline)) header | |
483 #elif V8_CC_MSVC && !defined(DEBUG) | |
484 # define INLINE(header) __forceinline header | |
485 # define NO_INLINE(header) header | |
486 #else | 365 #else |
487 # define INLINE(header) inline header | 366 #define INLINE(header) inline __attribute__((always_inline)) header |
488 # define NO_INLINE(header) header | 367 #define NO_INLINE(header) __attribute__((noinline)) header |
| 368 #endif |
| 369 #elif defined(_MSC_VER) && !defined(DEBUG) |
| 370 #define INLINE(header) __forceinline header |
| 371 #define NO_INLINE(header) header |
| 372 #else |
| 373 #define INLINE(header) inline header |
| 374 #define NO_INLINE(header) header |
489 #endif | 375 #endif |
490 | 376 |
491 | 377 |
492 #if V8_GNUC_PREREQ(4, 0) | 378 #if defined(__GNUC__) && __GNUC__ >= 4 |
493 #define MUST_USE_RESULT __attribute__ ((warn_unused_result)) | 379 #define MUST_USE_RESULT __attribute__ ((warn_unused_result)) |
494 #else | 380 #else |
495 #define MUST_USE_RESULT | 381 #define MUST_USE_RESULT |
496 #endif | 382 #endif |
497 | 383 |
498 | 384 |
499 // Define DISABLE_ASAN macros. | 385 // Define DISABLE_ASAN macros. |
500 #if defined(__has_feature) | 386 #if defined(__has_feature) |
501 #if __has_feature(address_sanitizer) | 387 #if __has_feature(address_sanitizer) |
502 #define DISABLE_ASAN __attribute__((no_address_safety_analysis)) | 388 #define DISABLE_ASAN __attribute__((no_address_safety_analysis)) |
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557 // the backend, so both modes are represented by the kStrictMode value. | 443 // the backend, so both modes are represented by the kStrictMode value. |
558 enum StrictModeFlag { | 444 enum StrictModeFlag { |
559 kNonStrictMode, | 445 kNonStrictMode, |
560 kStrictMode | 446 kStrictMode |
561 }; | 447 }; |
562 | 448 |
563 | 449 |
564 } } // namespace v8::internal | 450 } } // namespace v8::internal |
565 | 451 |
566 #endif // V8_GLOBALS_H_ | 452 #endif // V8_GLOBALS_H_ |
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