PPC/s390: Make FastNewFunctionContextStub take slots parameter

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 5324ef5b800c2933c9b3fd8955c1639d29675588..03da4b088492eb48be592c17d44cc9fe1b2d6e01 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -20,6 +20,11 @@ void CallInterfaceDescriptor::DefaultInitializePlatformSpecific(
                                    default_stub_registers);
 }
 
+const Register FastNewFunctionContextDescriptor::FunctionRegister() {
+  return r4;
+}
+const Register FastNewFunctionContextDescriptor::SlotsRegister() { return r3; }
+
 const Register LoadDescriptor::ReceiverRegister() { return r4; }
 const Register LoadDescriptor::NameRegister() { return r5; }
 const Register LoadDescriptor::SlotRegister() { return r3; }
@@ -70,12 +75,6 @@ void FastNewClosureDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void FastNewFunctionContextDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {r4};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
 void FastNewObjectDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {r4, r6};