Fixes to support ARMv5 lego mindstorm.

runtime/vm/raw_object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/raw_object.h"
 
 #include "vm/class_table.h"
 #include "vm/dart.h"
 #include "vm/freelist.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/visitor.h"
 
 
 namespace dart {
 
 
 const intptr_t RawPcDescriptors::kFullRecSize =
     sizeof(RawPcDescriptors::PcDescriptorRec);
 const intptr_t RawPcDescriptors::kCompressedRecSize =
-    kFullRecSize - sizeof(int16_t);
+    sizeof(RawPcDescriptors::CompressedPcDescriptorRec);
 
 bool RawObject::IsVMHeapObject() const {
   return Dart::vm_isolate()->heap()->Contains(ToAddr(this));
 }
 
 
 void RawObject::Validate(Isolate* isolate) const {
   if (Object::void_class_ == reinterpret_cast<RawClass*>(kHeapObjectTag)) {
     // Validation relies on properly initialized class classes. Skip if the
     // VM is still being initialized.
@@ skipping 856 matching lines @@
 intptr_t RawUserTag::VisitUserTagPointers(
     RawUserTag* raw_obj, ObjectPointerVisitor* visitor) {
   // Make sure that we got here with the tagged pointer as this.
   ASSERT(raw_obj->IsHeapObject());
   visitor->VisitPointers(raw_obj->from(), raw_obj->to());
   return UserTag::InstanceSize();
 }
 
 
 }  // namespace dart