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

src/ppc/interface-descriptors-ppc.cc

Index: src/ppc/interface-descriptors-ppc.cc
diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index c123e7c602d355c57078e996b1f46394e3fb2b65..b7dd8008a20e1abdc52cf021849f9af6a4f398c2 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -391,15 +391,26 @@ void MathRoundVariantCallFromOptimizedCodeDescriptor::
 }
 
 
-void PushArgsAndCallDescriptor::InitializePlatformSpecific(
+void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      r3,  // argument count (including receiver)
+      r3,  // argument count (not including receiver)
       r5,  // address of first argument
       r4   // the target callable to be call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
+
+
+void InterpreterCEntryDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      r3,  // argument count (argc)
+      r5,  // address of first argument (argv)
+      r4   // the runtime function to call
+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
 }  // namespace internal
 }  // namespace v8