Add runtime and native entry tags

runtime/vm/bootstrap_natives.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/bootstrap.h"
 
 #include "include/dart_api.h"
 
 #include "vm/bootstrap_natives.h"
 #include "vm/dart_api_impl.h"
@@ skipping 35 matching lines @@
     struct NativeEntries* entry = &(BootStrapEntries[i]);
     if ((strcmp(function_name, entry->name_) == 0) &&
         (entry->argument_count_ == argument_count)) {
       return reinterpret_cast<Dart_NativeFunction>(entry->function_);
     }
   }
   return NULL;
 }
 
 
+const char* BootstrapNatives::ReverseLookup(Dart_NativeFunction* nf) {
+  int num_entries = sizeof(BootStrapEntries) / sizeof(struct NativeEntries);
+  for (int i = 0; i < num_entries; i++) {
+    struct NativeEntries* entry = &(BootStrapEntries[i]);
+    if (reinterpret_cast<Dart_NativeFunction*>(entry->function_) == nf) {
+      return entry->name_;
+    }
+  }
+  return NULL;
+}
+
+
 void Bootstrap::SetupNativeResolver() {
   Library& library = Library::Handle();
 
   Dart_NativeEntryResolver resolver =
       reinterpret_cast<Dart_NativeEntryResolver>(BootstrapNatives::Lookup);
 
+  Dart_NativeEntryReverseResolver reverse_resolver =
+      reinterpret_cast<Dart_NativeEntryReverseResolver>(
+          BootstrapNatives::ReverseLookup);
+
   library = Library::AsyncLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::CoreLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::MathLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::MirrorsLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::InternalLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::IsolateLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 
   library = Library::TypedDataLibrary();
   ASSERT(!library.IsNull());
   library.set_native_entry_resolver(resolver);
+  library.set_native_entry_reverse_resolver(reverse_resolver);
 }
 
 
 bool Bootstrap::IsBootstapResolver(Dart_NativeEntryResolver resolver) {
   return (resolver ==
           reinterpret_cast<Dart_NativeEntryResolver>(BootstrapNatives::Lookup));
 }
 
 }  // namespace dart