diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index 693f341..b649f71 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "src/v8.h"
-
 #if V8_TARGET_ARCH_PPC
 
 #include "src/interface-descriptors.h"
@@ -16,12 +14,10 @@
 
 const Register LoadDescriptor::ReceiverRegister() { return r4; }
 const Register LoadDescriptor::NameRegister() { return r5; }
+const Register LoadDescriptor::SlotRegister() { return r3; }
 
 
-const Register VectorLoadICTrampolineDescriptor::SlotRegister() { return r3; }
-
-
-const Register VectorLoadICDescriptor::VectorRegister() { return r6; }
+const Register LoadWithVectorDescriptor::VectorRegister() { return r6; }
 
 
 const Register StoreDescriptor::ReceiverRegister() { return r4; }
@@ -29,20 +25,49 @@
 const Register StoreDescriptor::ValueRegister() { return r3; }
 
 
+const Register VectorStoreICTrampolineDescriptor::SlotRegister() { return r7; }
+
+
+const Register VectorStoreICDescriptor::VectorRegister() { return r6; }
+
+
+const Register VectorStoreTransitionDescriptor::SlotRegister() { return r7; }
+const Register VectorStoreTransitionDescriptor::VectorRegister() { return r6; }
+const Register VectorStoreTransitionDescriptor::MapRegister() { return r8; }
+
+
 const Register StoreTransitionDescriptor::MapRegister() { return r6; }
 
 
-const Register ElementTransitionAndStoreDescriptor::MapRegister() { return r6; }
+const Register LoadGlobalViaContextDescriptor::SlotRegister() { return r5; }
 
 
-const Register InstanceofDescriptor::left() { return r3; }
-const Register InstanceofDescriptor::right() { return r4; }
+const Register StoreGlobalViaContextDescriptor::SlotRegister() { return r5; }
+const Register StoreGlobalViaContextDescriptor::ValueRegister() { return r3; }
+
+
+const Register InstanceOfDescriptor::LeftRegister() { return r4; }
+const Register InstanceOfDescriptor::RightRegister() { return r3; }
+
+
+const Register StringCompareDescriptor::LeftRegister() { return r4; }
+const Register StringCompareDescriptor::RightRegister() { return r3; }
 
 
 const Register ArgumentsAccessReadDescriptor::index() { return r4; }
 const Register ArgumentsAccessReadDescriptor::parameter_count() { return r3; }
 
 
+const Register ArgumentsAccessNewDescriptor::function() { return r4; }
+const Register ArgumentsAccessNewDescriptor::parameter_count() { return r5; }
+const Register ArgumentsAccessNewDescriptor::parameter_pointer() { return r6; }
+
+
+const Register RestParamAccessDescriptor::parameter_count() { return r5; }
+const Register RestParamAccessDescriptor::parameter_pointer() { return r6; }
+const Register RestParamAccessDescriptor::rest_parameter_index() { return r7; }
+
+
 const Register ApiGetterDescriptor::function_address() { return r5; }
 
 
@@ -54,253 +79,367 @@
 }
 
 
-void FastNewClosureDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r5};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
+const Register GrowArrayElementsDescriptor::ObjectRegister() { return r3; }
+const Register GrowArrayElementsDescriptor::KeyRegister() { return r6; }
 
 
-void FastNewContextDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r4};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void ToNumberDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void NumberToStringDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void FastCloneShallowArrayDescriptor::Initialize(
+void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r6, r5, r4};
-  Representation representations[] = {
-      Representation::Tagged(), Representation::Tagged(), Representation::Smi(),
-      Representation::Tagged()};
-  data->Initialize(arraysize(registers), registers, representations);
+  Register registers[] = {r5};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void FastCloneShallowObjectDescriptor::Initialize(
+void FastNewContextDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r6, r5, r4, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CreateAllocationSiteDescriptor::Initialize(
+void ToNumberDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r5, r6};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void StoreArrayLiteralElementDescriptor::Initialize(
+// static
+const Register ToLengthDescriptor::ReceiverRegister() { return r3; }
+
+
+// static
+const Register ToStringDescriptor::ReceiverRegister() { return r3; }
+
+
+// static
+const Register ToObjectDescriptor::ReceiverRegister() { return r3; }
+
+
+void NumberToStringDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r6, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CallFunctionDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r4};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void CallFunctionWithFeedbackDescriptor::Initialize(
+void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r4, r6};
-  Representation representations[] = {Representation::Tagged(),
-                                      Representation::Tagged(),
-                                      Representation::Smi()};
-  data->Initialize(arraysize(registers), registers, representations);
+  Register registers[] = {r6};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CallConstructDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void FastCloneRegExpDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r6, r5, r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r6, r5, r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void FastCloneShallowObjectDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r6, r5, r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CreateAllocationSiteDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r5, r6};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CreateWeakCellDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r5, r6, r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void StoreArrayLiteralElementDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r6, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CallFunctionDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r4, r6};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r4, r6, r5};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void CallConstructDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   // r3 : number of arguments
   // r4 : the function to call
   // r5 : feedback vector
-  // r6 : (only if r5 is not the megamorphic symbol) slot in feedback
-  //      vector (Smi)
+  // r6 : slot in feedback vector (Smi, for RecordCallTarget)
+  // r7 : new target (for IsSuperConstructorCall)
   // TODO(turbofan): So far we don't gather type feedback and hence skip the
   // slot parameter, but ArrayConstructStub needs the vector to be undefined.
-  Register registers[] = {cp, r3, r4, r5};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r3, r4, r7, r5};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void RegExpConstructResultDescriptor::Initialize(
+void CallTrampolineDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r5, r4, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
+  // r3 : number of arguments
+  // r4 : the target to call
+  Register registers[] = {r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void TransitionElementsKindDescriptor::Initialize(
+void ConstructStubDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3, r4};
-  data->Initialize(arraysize(registers), registers, NULL);
+  // r3 : number of arguments
+  // r4 : the target to call
+  // r6 : the new target
+  // r5 : allocation site or undefined
+  Register registers[] = {r4, r6, r3, r5};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ArrayConstructorConstantArgCountDescriptor::Initialize(
+void ConstructTrampolineDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  // r3 : number of arguments
+  // r4 : the target to call
+  // r6 : the new target
+  Register registers[] = {r4, r6, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void RegExpConstructResultDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r5, r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void TransitionElementsKindDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r3, r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  data->InitializePlatformSpecific(0, nullptr, nullptr);
+}
+
+
+void AllocateInNewSpaceDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void ArrayConstructorConstantArgCountDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // register state
-  // cp -- context
   // r3 -- number of arguments
   // r4 -- function
   // r5 -- allocation site with elements kind
-  Register registers[] = {cp, r4, r5};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r4, r5};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ArrayConstructorDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, r4, r5, r3};
-  Representation representations[] = {
-      Representation::Tagged(), Representation::Tagged(),
-      Representation::Tagged(), Representation::Integer32()};
-  data->Initialize(arraysize(registers), registers, representations);
-}
-
-
-void InternalArrayConstructorConstantArgCountDescriptor::Initialize(
+void ArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
+  // stack param count needs (constructor pointer, and single argument)
+  Register registers[] = {r4, r5, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void InternalArrayConstructorConstantArgCountDescriptor::
+    InitializePlatformSpecific(CallInterfaceDescriptorData* data) {
   // register state
-  // cp -- context
   // r3 -- number of arguments
   // r4 -- constructor function
-  Register registers[] = {cp, r4};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r4};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void InternalArrayConstructorDescriptor::Initialize(
+void InternalArrayConstructorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // stack param count needs (constructor pointer, and single argument)
-  Register registers[] = {cp, r4, r3};
-  Representation representations[] = {Representation::Tagged(),
-                                      Representation::Tagged(),
-                                      Representation::Integer32()};
-  data->Initialize(arraysize(registers), registers, representations);
+  Register registers[] = {r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CompareNilDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void ToBooleanDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void BinaryOpDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r4, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
-}
-
-
-void BinaryOpWithAllocationSiteDescriptor::Initialize(
+void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r5, r4, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
+  Register registers[] = {r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void StringAddDescriptor::Initialize(CallInterfaceDescriptorData* data) {
-  Register registers[] = {cp, r4, r3};
-  data->Initialize(arraysize(registers), registers, NULL);
+void CompareNilDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void KeyedDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void ToBooleanDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void BinaryOpDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r5, r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void StringAddDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {r4, r3};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void KeyedDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       r5,  // key
   };
-  Representation representations[] = {
-      Representation::Tagged(),  // context
-      Representation::Tagged(),  // key
-  };
-  data->Initialize(arraysize(registers), registers, representations);
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void NamedDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void NamedDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       r5,  // name
   };
-  Representation representations[] = {
-      Representation::Tagged(),  // context
-      Representation::Tagged(),  // name
-  };
-  data->Initialize(arraysize(registers), registers, representations);
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CallHandlerDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void CallHandlerDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       r3,  // receiver
   };
-  Representation representations[] = {
-      Representation::Tagged(),  // context
-      Representation::Tagged(),  // receiver
-  };
-  data->Initialize(arraysize(registers), registers, representations);
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ArgumentAdaptorDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void ArgumentAdaptorDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
       r4,  // JSFunction
+      r6,  // the new target
       r3,  // actual number of arguments
       r5,  // expected number of arguments
   };
-  Representation representations[] = {
-      Representation::Tagged(),     // context
-      Representation::Tagged(),     // JSFunction
-      Representation::Integer32(),  // actual number of arguments
-      Representation::Integer32(),  // expected number of arguments
-  };
-  data->Initialize(arraysize(registers), registers, representations);
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ApiFunctionDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+void ApiFunctionDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
   Register registers[] = {
-      cp,  // context
+      r3,  // callee
+      r7,  // call_data
+      r5,  // holder
+      r4,  // api_function_address
+      r6,  // actual number of arguments
+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void ApiAccessorDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
       r3,  // callee
       r7,  // call_data
       r5,  // holder
       r4,  // api_function_address
   };
-  Representation representations[] = {
-      Representation::Tagged(),    // context
-      Representation::Tagged(),    // callee
-      Representation::Tagged(),    // call_data
-      Representation::Tagged(),    // holder
-      Representation::External(),  // api_function_address
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      r3,  // argument count (not including receiver)
+      r5,  // address of first argument
+      r4   // the target callable to be call
   };
-  data->Initialize(arraysize(registers), registers, representations);
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
+
+
+void InterpreterPushArgsAndConstructDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      r3,  // argument count (not including receiver)
+      r6,  // new target
+      r4,  // constructor to call
+      r5   // address of the first argument
+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
 }
-}  // namespace v8::internal
+
+
+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
 
 #endif  // V8_TARGET_ARCH_PPC