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Issue 153773002: A64: Synchronize with r16679. (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/a64
Patch Set: Created 6 years, 10 months ago
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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
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79 if ((intgr & 1) != 0 && intgr - flt == 0.5) { 79 if ((intgr & 1) != 0 && intgr - flt == 0.5) {
80 // If the number is halfway between two integers, round to the even one. 80 // If the number is halfway between two integers, round to the even one.
81 intgr--; 81 intgr--;
82 } 82 }
83 #endif 83 #endif
84 return intgr; 84 return intgr;
85 } 85 }
86 86
87 #endif // V8_CC_MSVC 87 #endif // V8_CC_MSVC
88 88
89 // Random is missing on both Visual Studio and MinGW.
90 #if V8_CC_MSVC || V8_CC_MINGW
91 int random();
92 #endif // V8_CC_MSVC || V8_CC_MINGW
93
94 namespace v8 { 89 namespace v8 {
95 namespace internal { 90 namespace internal {
96 91
97 double ceiling(double x); 92 double ceiling(double x);
98 double modulo(double x, double y); 93 double modulo(double x, double y);
99 94
100 // Custom implementation of math functions. 95 // Custom implementation of math functions.
101 double fast_sin(double input); 96 double fast_sin(double input);
102 double fast_cos(double input); 97 double fast_cos(double input);
103 double fast_tan(double input); 98 double fast_tan(double input);
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164 159
165 // ---------------------------------------------------------------------------- 160 // ----------------------------------------------------------------------------
166 // OS 161 // OS
167 // 162 //
168 // This class has static methods for the different platform specific 163 // This class has static methods for the different platform specific
169 // functions. Add methods here to cope with differences between the 164 // functions. Add methods here to cope with differences between the
170 // supported platforms. 165 // supported platforms.
171 166
172 class OS { 167 class OS {
173 public: 168 public:
174 // Initializes the platform OS support. Called once at VM startup.
175 static void SetUp();
176
177 // Initializes the platform OS support that depend on CPU features. This is 169 // Initializes the platform OS support that depend on CPU features. This is
178 // called after CPU initialization. 170 // called after CPU initialization.
179 static void PostSetUp(); 171 static void PostSetUp();
180 172
181 // Returns the accumulated user time for thread. This routine 173 // Returns the accumulated user time for thread. This routine
182 // can be used for profiling. The implementation should 174 // can be used for profiling. The implementation should
183 // strive for high-precision timer resolution, preferable 175 // strive for high-precision timer resolution, preferable
184 // micro-second resolution. 176 // micro-second resolution.
185 static int GetUserTime(uint32_t* secs, uint32_t* usecs); 177 static int GetUserTime(uint32_t* secs, uint32_t* usecs);
186 178
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288 static int SNPrintF(Vector<char> str, const char* format, ...); 280 static int SNPrintF(Vector<char> str, const char* format, ...);
289 static int VSNPrintF(Vector<char> str, 281 static int VSNPrintF(Vector<char> str,
290 const char* format, 282 const char* format,
291 va_list args); 283 va_list args);
292 284
293 static char* StrChr(char* str, int c); 285 static char* StrChr(char* str, int c);
294 static void StrNCpy(Vector<char> dest, const char* src, size_t n); 286 static void StrNCpy(Vector<char> dest, const char* src, size_t n);
295 287
296 // Support for the profiler. Can do nothing, in which case ticks 288 // Support for the profiler. Can do nothing, in which case ticks
297 // occuring in shared libraries will not be properly accounted for. 289 // occuring in shared libraries will not be properly accounted for.
298 static void LogSharedLibraryAddresses(); 290 static void LogSharedLibraryAddresses(Isolate* isolate);
299 291
300 // Support for the profiler. Notifies the external profiling 292 // Support for the profiler. Notifies the external profiling
301 // process that a code moving garbage collection starts. Can do 293 // process that a code moving garbage collection starts. Can do
302 // nothing, in which case the code objects must not move (e.g., by 294 // nothing, in which case the code objects must not move (e.g., by
303 // using --never-compact) if accurate profiling is desired. 295 // using --never-compact) if accurate profiling is desired.
304 static void SignalCodeMovingGC(); 296 static void SignalCodeMovingGC();
305 297
306 // The return value indicates the CPU features we are sure of because of the 298 // The return value indicates the CPU features we are sure of because of the
307 // OS. For example MacOSX doesn't run on any x86 CPUs that don't have SSE2 299 // OS. For example MacOSX doesn't run on any x86 CPUs that don't have SSE2
308 // instructions. 300 // instructions.
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598 char name_[kMaxThreadNameLength]; 590 char name_[kMaxThreadNameLength];
599 int stack_size_; 591 int stack_size_;
600 Semaphore* start_semaphore_; 592 Semaphore* start_semaphore_;
601 593
602 DISALLOW_COPY_AND_ASSIGN(Thread); 594 DISALLOW_COPY_AND_ASSIGN(Thread);
603 }; 595 };
604 596
605 } } // namespace v8::internal 597 } } // namespace v8::internal
606 598
607 #endif // V8_PLATFORM_H_ 599 #endif // V8_PLATFORM_H_
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