Win64 - Allow returning two values from a runtime function.

src/arm/macro-assembler-arm.h

 // 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 264 matching lines @@
   // Call a runtime routine.
   // Eventually this should be used for all C calls.
   void CallRuntime(Runtime::Function* f, int num_arguments);
 
   // Convenience function: Same as above, but takes the fid instead.
   void CallRuntime(Runtime::FunctionId fid, int num_arguments);
 
   // Tail call of a runtime routine (jump).
   // Like JumpToBuiltin, but also takes care of passing the number
   // of parameters.
-  void TailCallRuntime(const ExternalReference& ext, int num_arguments);
+  void TailCallRuntime(const ExternalReference& ext,
+                       int num_arguments,
+                       int result_size);
 
   // Jump to the builtin routine.
   void JumpToBuiltin(const ExternalReference& builtin);
 
   // Invoke specified builtin JavaScript function. Adds an entry to
   // the unresolved list if the name does not resolve.
   void InvokeBuiltin(Builtins::JavaScript id, InvokeJSFlags flags);
 
   // Store the code object for the given builtin in the target register and
   // setup the function in r1.
@@ skipping 79 matching lines @@
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_MACRO_ASSEMBLER_ARM_H_