[Interpreter] Add CallRuntime support to the interpreter.

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index d0c05ad0ccb0fc713509825e58344d0cd80213ea..0f6f1ec5f2647c02893d8a7fba7d218794a54416 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1064,13 +1064,20 @@ void CEntryStub::Generate(MacroAssembler* masm) {
   // fp: frame pointer    (restored after C call)
   // sp: stack pointer    (restored as callee's sp after C call)
   // cp: current context  (C callee-saved)
+  //
+  // If argv_in_register():
+  // a2: pointer to the first argument
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
-  // Compute the argv pointer in a callee-saved register.
-  __ dsll(s1, a0, kPointerSizeLog2);
-  __ Daddu(s1, sp, s1);
-  __ Dsubu(s1, s1, kPointerSize);
+  if (!argv_in_register()) {
+    // Compute the argv pointer in a callee-saved register.
+    __ dsll(s1, a0, kPointerSizeLog2);
+    __ Daddu(s1, sp, s1);
+    __ Dsubu(s1, s1, kPointerSize);
+  } else {
+    __ mov(s1, a2);
+  }
 
   // Enter the exit frame that transitions from JavaScript to C++.
   FrameScope scope(masm, StackFrame::MANUAL);