PPC: Serializer: serialize internal references via object visitor.

src/ppc/assembler-ppc-inl.h

Index: src/ppc/assembler-ppc-inl.h
diff --git a/src/ppc/assembler-ppc-inl.h b/src/ppc/assembler-ppc-inl.h
index e05d38468f979095e901c5263e02e3cb5a1cbbe7..6877c985f06c82f8caf0345a77c57c2861df1b09 100644
--- a/src/ppc/assembler-ppc-inl.h
+++ b/src/ppc/assembler-ppc-inl.h
@@ -78,15 +78,9 @@ Address RelocInfo::target_internal_reference() {
 }
 
 
-void RelocInfo::set_target_internal_reference(Address target) {
-  if (IsInternalReference(rmode_)) {
-    // Jump table entry
-    Memory::Address_at(pc_) = target;
-  } else {
-    // mov sequence
-    DCHECK(IsInternalReferenceEncoded(rmode_));
-    Assembler::set_target_address_at(pc_, host_, target, SKIP_ICACHE_FLUSH);
-  }
+Address RelocInfo::target_internal_reference_address() {
+  DCHECK(IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_));
+  return reinterpret_cast<Address>(pc_);
 }
 
 
@@ -308,8 +302,18 @@ Object** RelocInfo::call_object_address() {
 
 void RelocInfo::WipeOut() {
   DCHECK(IsEmbeddedObject(rmode_) || IsCodeTarget(rmode_) ||
-         IsRuntimeEntry(rmode_) || IsExternalReference(rmode_));
-  Assembler::set_target_address_at(pc_, host_, NULL);
+         IsRuntimeEntry(rmode_) || IsExternalReference(rmode_) ||
+         IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_));
+  if (IsInternalReference(rmode_)) {
+    // Jump table entry
+    Memory::Address_at(pc_) = NULL;
+  } else if (IsInternalReferenceEncoded(rmode_)) {
+    // mov sequence
+    // Currently used only by deserializer, no need to flush.
+    Assembler::set_target_address_at(pc_, host_, NULL, SKIP_ICACHE_FLUSH);
+  } else {
+    Assembler::set_target_address_at(pc_, host_, NULL);
+  }
 }
 
 
@@ -356,6 +360,9 @@ void RelocInfo::Visit(Isolate* isolate, ObjectVisitor* visitor) {
     visitor->VisitCell(this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     visitor->VisitExternalReference(this);
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE ||
+             mode == RelocInfo::INTERNAL_REFERENCE_ENCODED) {
+    visitor->VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     visitor->VisitCodeAgeSequence(this);
   } else if (((RelocInfo::IsJSReturn(mode) && IsPatchedReturnSequence()) ||
@@ -380,6 +387,9 @@ void RelocInfo::Visit(Heap* heap) {
     StaticVisitor::VisitCell(heap, this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     StaticVisitor::VisitExternalReference(this);
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE ||
+             mode == RelocInfo::INTERNAL_REFERENCE_ENCODED) {
+    StaticVisitor::VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     StaticVisitor::VisitCodeAgeSequence(heap, this);
   } else if (heap->isolate()->debug()->has_break_points() &&
@@ -474,6 +484,18 @@ void Assembler::deserialization_set_special_target_at(
   set_target_address_at(instruction_payload, code, target);
 }
 
+
+void Assembler::deserialization_set_target_internal_reference_at(
+    Address pc, Address target) {
+  if (IsLis(instr_at(pc)) && IsOri(instr_at(pc + kInstrSize))) {
+    Code* code = NULL;
+    set_target_address_at(pc, code, target, SKIP_ICACHE_FLUSH);
+  } else {
+    Memory::Address_at(pc) = target;
+  }
+}
+
+
 // This code assumes the FIXED_SEQUENCE of lis/ori
 void Assembler::set_target_address_at(Address pc,
                                       ConstantPoolArray* constant_pool,