Support compaction for code space pages.

src/assembler.cc

 // Copyright (c) 2011 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 500 matching lines @@
         int rmode = extra_tag + RelocInfo::LAST_COMPACT_ENUM;
         if (SetMode(static_cast<RelocInfo::Mode>(rmode))) return;
       }
     }
   }
   done_ = true;
 }
 
 
 RelocIterator::RelocIterator(Code* code, int mode_mask) {
+  rinfo_.host_ = code;
   rinfo_.pc_ = code->instruction_start();
   rinfo_.data_ = 0;
   // Relocation info is read backwards.
   pos_ = code->relocation_start() + code->relocation_size();
   end_ = code->relocation_start();
   done_ = false;
   mode_mask_ = mode_mask;
   last_id_ = 0;
   last_position_ = 0;
   if (mode_mask_ == 0) pos_ = end_;
@@ skipping 705 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