VM: More abstract interface for generating stub calls.

runtime/vm/assembler_ia32.h

Index: runtime/vm/assembler_ia32.h
diff --git a/runtime/vm/assembler_ia32.h b/runtime/vm/assembler_ia32.h
index c85248f359a61f2bc08508abb6038b646d45bfe5..bac86c487ea0ac590ad8640caa54030f65c090a6 100644
--- a/runtime/vm/assembler_ia32.h
+++ b/runtime/vm/assembler_ia32.h
@@ -17,6 +17,7 @@ namespace dart {
 
 // Forward declarations.
 class RuntimeEntry;
+class StubEntry;
 
 class Immediate : public ValueObject {
  public:
@@ -731,6 +732,11 @@ class Assembler : public ValueObject {
 
   void CallRuntime(const RuntimeEntry& entry, intptr_t argument_count);
 
+  void Call(const StubEntry& stub_entry);
+
+  void Jmp(const StubEntry& stub_entry);
+  void J(Condition condition, const StubEntry& stub_entry);
+
   /*
    * Loading and comparing classes of objects.
    */