Save top StackResource in entry frame.

runtime/vm/longjump.cc

Index: runtime/vm/longjump.cc
===================================================================
--- runtime/vm/longjump.cc	(revision 43896)
+++ runtime/vm/longjump.cc	(working copy)
@@ -26,7 +26,7 @@
   // We do not want to jump past Dart frames.  Note that this code
   // assumes the stack grows from high to low.
   Isolate* isolate = Isolate::Current();
-  uword jumpbuf_addr = reinterpret_cast<uword>(this);
+  uword jumpbuf_addr = Isolate::GetCurrentStackPointer();
 #if defined(USING_SIMULATOR)
   uword top_exit_frame_info = isolate->simulator()->top_exit_frame_info();
 #else
@@ -55,7 +55,7 @@
   isolate->object_store()->set_sticky_error(error);
 
   // Destruct all the active StackResource objects.
-  StackResource::Unwind(isolate, top_);
+  StackResource::UnwindAbove(isolate, top_);
   longjmp(environment_, value);
   UNREACHABLE();
 }