Use Arguments object in C builtins, instead of __argc__ and __argv__.

src/platform-win32.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1299 matching lines @@
 #ifdef _MSC_VER
   static const __int64 nanval = 0xfff8000000000000;
   return *reinterpret_cast<const double*>(&nanval);
 #else  // _MSC_VER
   return NAN;
 #endif  // _MSC_VER
 }
 
 
 int OS::ActivationFrameAlignment() {
-  // Floating point code runs faster if the stack is 8-byte aligned.
-  return 8;
+#ifdef _WIN64
+  return 16;  // C math library requires the stack to be 16-byte aligned.

[Søren Thygesen Gjesse, 2009/08/27 11:18:14]

Is this only for math?

[William Hesse, 2009/08/27 11:26:12]

I don't know.

[Lasse Reichstein, 2009/08/27 11:35:28]

No, this is for all function calls in Win64.
See http://msdn.microsoft.com/en-us/library/ms235286.aspx

+#else
+  return 8;  // Floating-point math runs faster if stack is at least 8-byte aligned.
+#endif
 }
 
 
 bool VirtualMemory::IsReserved() {
   return address_ != NULL;
 }
 
 
 VirtualMemory::VirtualMemory(size_t size) {
   address_ = VirtualAlloc(NULL, size, MEM_RESERVE, PAGE_NOACCESS);
@@ skipping 546 matching lines @@
 
   // Release the thread handles
   CloseHandle(data_->sampler_thread_);
   CloseHandle(data_->profiled_thread_);
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal