Allow direct allocation in old pointer space.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 1140 matching lines @@
   Heap* heap = isolate->heap();
   return ExternalReference(heap->always_allocate_scope_depth_address());
 }
 
 
 ExternalReference ExternalReference::new_space_allocation_limit_address(
     Isolate* isolate) {
   return ExternalReference(isolate->heap()->NewSpaceAllocationLimitAddress());
 }
 
+ExternalReference ExternalReference::old_pointer_space_allocation_top_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldPointerSpaceAllocationTopAddress());
+}
+
+ExternalReference ExternalReference::old_pointer_space_allocation_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldPointerSpaceAllocationLimitAddress());
+}
 
 ExternalReference ExternalReference::handle_scope_level_address(
     Isolate* isolate) {
   return ExternalReference(HandleScope::current_level_address(isolate));
 }
 
 
 ExternalReference ExternalReference::handle_scope_next_address(
     Isolate* isolate) {
   return ExternalReference(HandleScope::current_next_address(isolate));
@@ skipping 437 matching lines @@
     assembler_->RecordRelocInfo(RelocInfo::POSITION, state_.current_position);
     state_.written_position = state_.current_position;
     written = true;
   }
 
   // Return whether something was written.
   return written;
 }
 
 } }  // namespace v8::internal