Begins work on ARM64, first assembler test.

pkg/pkg.status

 # 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.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 251 matching lines @@
 *: Skip  # Issue 13624
 
 [ $arch == simarm || $arch == simmips ]
 barback/test/too_many_open_files_test: Skip # 14220
 third_party/html5lib/test/tokenizer_test: Pass, Slow
 docgen/test/generate_json_test: Skip # Issue 17003
 
 [ $arch == simarm && $checked ]
 watcher/test/directory_watcher/linux_test: Skip # Issue 16118
 
+[ $arch == simarm64 ]
+*: Skip
+
 # Skip serialization test that explicitly has no library declaration in the
 # test on Dartium, which requires all tests to have a library.
 [ $compiler == none && ( $runtime == dartium || $runtime == drt ) ]
 serialization/test/no_library_test: Skip # Expected Failure
 serialization/test/serialization_test: Fail # 13921
 unittest/test/unittest_async_exception_test: Fail # 13921
 unittest/test/unittest_async_setup_teardown_test: Fail # 13921
 unittest/test/unittest_completion_test: Fail # 13921
 unittest/test/unittest_correct_callback_test: Fail # 13921
 unittest/test/unittest_exception_test: Fail # 13921
@@ skipping 94 matching lines @@
 collection/test/priority_queue_test: PubGetError
 collection/test/unmodifiable_collection_test: PubGetError
 collection/test/wrapper_test: PubGetError
 stack_trace/test/chain_test: PubGetError
 stack_trace/test/frame_test: PubGetError
 stack_trace/test/trace_test: PubGetError
 stack_trace/test/vm_test: PubGetError
 
 [ $runtime == ie9 ]
 polymer: Pass, Fail, Timeout # Issue 16717