X64: Small changes to let WIN64 platform compile.

src/x64/builtins-x64.cc

 // Copyright 2009 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 738 matching lines @@
   // - JSFunction* function (
   // - Object* receiver
   // - int argc
   // - Object*** argv
   // (see Handle::Invoke in execution.cc).
 
   // Platform specific argument handling. After this, the stack contains
   // an internal frame and the pushed function and receiver, and
   // register rax and rbx holds the argument count and argument array,
   // while rdi holds the function pointer and rsi the context.
-#ifdef __MSVC__
+#ifdef _WIN64
   // MSVC parameters in:
   // rcx : entry (ignored)
   // rdx : function
   // r8 : receiver
   // r9 : argc
   // [rsp+0x20] : argv
 
   // Clear the context before we push it when entering the JS frame.
   __ xor_(rsi, rsi);
-  // Enter an internal frame.
   __ EnterInternalFrame();
 
   // Load the function context into rsi.
   __ movq(rsi, FieldOperand(rdx, JSFunction::kContextOffset));
 
   // Push the function and the receiver onto the stack.
   __ push(rdx);
   __ push(r8);
 
   // Load the number of arguments and setup pointer to the arguments.
   __ movq(rax, r9);
   // Load the previous frame pointer to access C argument on stack
   __ movq(kScratchRegister, Operand(rbp, 0));
   __ movq(rbx, Operand(kScratchRegister, EntryFrameConstants::kArgvOffset));
   // Load the function pointer into rdi.
   __ movq(rdi, rdx);
-#else  // !defined(__MSVC__)
+#else  // !defined(_WIN64)
   // GCC parameters in:
   // rdi : entry (ignored)
   // rsi : function
   // rdx : receiver
   // rcx : argc
   // r8  : argv
 
   __ movq(rdi, rsi);
   // rdi : function
 
   // Clear the context before we push it when entering the JS frame.
   __ xor_(rsi, rsi);
   // Enter an internal frame.
   __ EnterInternalFrame();
 
   // Push the function and receiver and setup the context.
   __ push(rdi);
   __ push(rdx);
   __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
 
   // Load the number of arguments and setup pointer to the arguments.
   __ movq(rax, rcx);
   __ movq(rbx, r8);
-#endif  // __MSVC__
+#endif  // _WIN64
   // Current stack contents:
   // [rsp + 2 * kPointerSize ... ]: Internal frame
   // [rsp + kPointerSize]         : function
   // [rsp]                        : receiver
   // Current register contents:
   // rax : argc
   // rbx : argv
   // rsi : context
   // rdi : function
 
@@ skipping 34 matching lines @@
 void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
   Generate_JSEntryTrampolineHelper(masm, false);
 }
 
 
 void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
   Generate_JSEntryTrampolineHelper(masm, true);
 }
 
 } }  // namespace v8::internal