Changes for running tests on arm64 hardware.

tools/utils.py

 # 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.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import os
 import platform
@@ skipping 32 matching lines @@
     return 'solaris'
   else:
     return None
 
 
 # Try to guess the host architecture.
 def GuessArchitecture():
   id = platform.machine()
   if id.startswith('arm'):
     return 'arm'
+  elif id.startswith('aarch64'):
+    return 'arm64'
   elif id.startswith('mips'):
     return 'mips'
   elif (not id) or (not re.match('(x|i[3-6])86', id) is None):
     return 'ia32'
   elif id == 'i86pc':
     return 'ia32'
   elif '64' in id:
     return 'x64'
   else:
     guess_os = GuessOS()
@@ skipping 458 matching lines @@
 def DartBinary():
   tools_dir = os.path.dirname(os.path.realpath(__file__))
   dart_binary_prefix = os.path.join(tools_dir, 'testing', 'bin')
   if IsWindows():
     return os.path.join(dart_binary_prefix, 'windows', 'dart.exe')
   else:
     arch = GuessArchitecture()
     system = GuessOS()
     if arch == 'arm':
       return os.path.join(dart_binary_prefix, system, 'dart-arm')
+    elif arch == 'arm64':
+      return os.path.join(dart_binary_prefix, system, 'dart-arm64')
     elif arch == 'mips':
       return os.path.join(dart_binary_prefix, system, 'dart-mips')
     else:
       return os.path.join(dart_binary_prefix, system, 'dart')
 
 
 def DartSdkBinary():
   tools_dir = os.path.dirname(os.path.realpath(__file__))
   dart_binary_prefix = os.path.join(tools_dir, '..', 'sdk' , 'bin')
   return os.path.join(dart_binary_prefix, 'dart')
@@ skipping 20 matching lines @@
     os.chdir(self._working_directory)
 
   def __exit__(self, *_):
     print "Enter directory = ", self._old_cwd
     os.chdir(self._old_cwd)
 
 
 if __name__ == "__main__":
   import sys
   Main(sys.argv)