X87: [Interpreter] Add CallRuntime support to the interpreter.

src/x87/code-stubs-x87.cc

Index: src/x87/code-stubs-x87.cc
diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index a90d83a09ffe156b8f29b15ff5325ce60d812cf5..03f7854018061f78a38f07cfafd1db1604b563ea 100644
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -2137,11 +2137,23 @@ void CEntryStub::Generate(MacroAssembler* masm) {
   // esp: stack pointer  (restored after C call)
   // esi: current context (C callee-saved)
   // edi: JS function of the caller (C callee-saved)
+  //
+  // If argv_in_register():
+  // ecx: pointer to the first argument
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
   // Enter the exit frame that transitions from JavaScript to C++.
-  __ EnterExitFrame(save_doubles());
+  if (argv_in_register()) {
+    DCHECK(!save_doubles());
+    __ EnterApiExitFrame(3);
+
+    // Move argc and argv into the correct registers.
+    __ mov(esi, ecx);
+    __ mov(edi, eax);
+  } else {
+    __ EnterExitFrame(save_doubles());
+  }
 
   // ebx: pointer to C function  (C callee-saved)
   // ebp: frame pointer  (restored after C call)
@@ -2186,7 +2198,7 @@ void CEntryStub::Generate(MacroAssembler* masm) {
   }
 
   // Exit the JavaScript to C++ exit frame.
-  __ LeaveExitFrame(save_doubles());
+  __ LeaveExitFrame(save_doubles(), !argv_in_register());
   __ ret(0);
 
   // Handling of exception.