Second set of changes for implementation of stack map support.

vm/object.cc

Index: vm/object.cc
===================================================================
--- vm/object.cc	(revision 5572)
+++ vm/object.cc	(working copy)
@@ -5388,6 +5388,11 @@
 }
 
 
+void Stackmap::SetCode(const Code& code) const {
+  StorePointer(&raw_ptr()->code_, code.raw());
+}
+
+
 // Return the bit offset of the highest bit set.
 intptr_t Stackmap::Maximum() const {
   intptr_t bound = SizeInBits();
@@ -5478,12 +5483,12 @@
   if (IsNull()) {
     return "{null}";
   } else {
-    intptr_t index = OS::SNPrint(NULL, 0, "0x%lx { ", pc());
+    intptr_t index = OS::SNPrint(NULL, 0, "0x%lx { ", PC());
     intptr_t alloc_size = index + ((Maximum() + 1) * 2) + 2;  // "{ 1 0 .... }".
     Isolate* isolate = Isolate::Current();
     char* chars = reinterpret_cast<char*>(
         isolate->current_zone()->Allocate(alloc_size));
-    index = OS::SNPrint(chars, alloc_size, "0x%lx { ", pc());
+    index = OS::SNPrint(chars, alloc_size, "0x%lx { ", PC());
     for (intptr_t i = 0; i <= Maximum(); i++) {
       index += OS::SNPrint((chars + index),
                            (alloc_size - index),
@@ -5643,6 +5648,11 @@
 }
 
 
+void Code::set_stackmaps(const Array& maps) const {
+  StorePointer(&raw_ptr()->stackmaps_, maps.raw());
+}
+
+
 RawCode* Code::New(int pointer_offsets_length) {
   const Class& cls = Class::Handle(Object::code_class());
   Code& result = Code::Handle();