[Interpreter] Add CallRuntime support to the interpreter.

src/x64/macro-assembler-x64.h

Index: src/x64/macro-assembler-x64.h
diff --git a/src/x64/macro-assembler-x64.h b/src/x64/macro-assembler-x64.h
index b7183ff35d591d40a6027a7f673d0e21408a10fd..a7fd91cdd2f23368f32e74931a12a2f44850dd1f 100644
--- a/src/x64/macro-assembler-x64.h
+++ b/src/x64/macro-assembler-x64.h
@@ -342,8 +342,8 @@ class MacroAssembler: public Assembler {
 
   // Leave the current exit frame. Expects/provides the return value in
   // register rax:rdx (untouched) and the pointer to the first
-  // argument in register rsi.
-  void LeaveExitFrame(bool save_doubles = false);
+  // argument in register rsi (if pop_arguments == true).
+  void LeaveExitFrame(bool save_doubles = false, bool pop_arguments = true);
 
   // Leave the current exit frame. Expects/provides the return value in
   // register rax (untouched).