Implement direct allocation in old data space infrastructure.

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 1184 matching lines @@
 }
 
 
 ExternalReference ExternalReference::old_pointer_space_allocation_limit_address(
     Isolate* isolate) {
   return ExternalReference(
       isolate->heap()->OldPointerSpaceAllocationLimitAddress());
 }
 
 
+ExternalReference ExternalReference::old_data_space_allocation_top_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldDataSpaceAllocationTopAddress());
+}
+
+
+ExternalReference ExternalReference::old_data_space_allocation_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldDataSpaceAllocationLimitAddress());
+}
+
+
 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 436 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