Add missing files from last commit.

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 655 matching lines @@
   return ExternalReference(RegExpStack::limit_address());
 }
 
 
 ExternalReference ExternalReference::new_space_start() {
   return ExternalReference(Heap::NewSpaceStart());
 }
 
 
 ExternalReference ExternalReference::write_buffer_top() {
-  return ExternalReference(WriteBuffer::Top());
+  return ExternalReference(WriteBuffer::TopAddress());
 }
 
 
 ExternalReference ExternalReference::new_space_mask() {
   return ExternalReference(reinterpret_cast<Address>(Heap::NewSpaceMask()));
 }
 
 
 ExternalReference ExternalReference::new_space_allocation_top_address() {
   return ExternalReference(Heap::NewSpaceAllocationTopAddress());
@@ skipping 254 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