Use v8's test runner

4 files changed, 1346 insertions, 218 deletions

diff --git a/tools/jsmin.py b/tools/jsmin.py
index ae7581413a9..76e4845a60a 100644..120000
--- a/tools/jsmin.py
+++ b/tools/jsmin.py
@@ -1,218 +1 @@
-#!/usr/bin/python

-

-# This code is original from jsmin by Douglas Crockford, it was translated to

-# Python by Baruch Even. The original code had the following copyright and

-# license.

-#

-# /* jsmin.c

-#    2007-05-22

-#

-# Copyright (c) 2002 Douglas Crockford  (www.crockford.com)

-#

-# Permission is hereby granted, free of charge, to any person obtaining a copy of

-# this software and associated documentation files (the "Software"), to deal in

-# the Software without restriction, including without limitation the rights to

-# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies

-# of the Software, and to permit persons to whom the Software is furnished to do

-# so, subject to the following conditions:

-#

-# The above copyright notice and this permission notice shall be included in all

-# copies or substantial portions of the Software.

-#

-# The Software shall be used for Good, not Evil.

-#

-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

-# SOFTWARE.

-# */

-

-from StringIO import StringIO

-

-def jsmin(js):

-    ins = StringIO(js)

-    outs = StringIO()

-    JavascriptMinify().minify(ins, outs)

-    str = outs.getvalue()

-    if len(str) > 0 and str[0] == '\n':

-        str = str[1:]

-    return str

-

-def isAlphanum(c):

-    """return true if the character is a letter, digit, underscore,

-           dollar sign, or non-ASCII character.

-    """

-    return ((c >= 'a' and c <= 'z') or (c >= '0' and c <= '9') or

-            (c >= 'A' and c <= 'Z') or c == '_' or c == '$' or c == '\\' or (c is not None and ord(c) > 126));

-

-class UnterminatedComment(Exception):

-    pass

-

-class UnterminatedStringLiteral(Exception):

-    pass

-

-class UnterminatedRegularExpression(Exception):

-    pass

-

-class JavascriptMinify(object):

-

-    def _outA(self):

-        self.outstream.write(self.theA)

-    def _outB(self):

-        self.outstream.write(self.theB)

-

-    def _get(self):

-        """return the next character from stdin. Watch out for lookahead. If

-           the character is a control character, translate it to a space or

-           linefeed.

-        """

-        c = self.theLookahead

-        self.theLookahead = None

-        if c == None:

-            c = self.instream.read(1)

-        if c >= ' ' or c == '\n':

-            return c

-        if c == '': # EOF

-            return '\000'

-        if c == '\r':

-            return '\n'

-        return ' '

-

-    def _peek(self):

-        self.theLookahead = self._get()

-        return self.theLookahead

-

-    def _next(self):

-        """get the next character, excluding comments. peek() is used to see

-           if an unescaped '/' is followed by a '/' or '*'.

-        """

-        c = self._get()

-        if c == '/' and self.theA != '\\':

-            p = self._peek()

-            if p == '/':

-                c = self._get()

-                while c > '\n':

-                    c = self._get()

-                return c

-            if p == '*':

-                c = self._get()

-                while 1:

-                    c = self._get()

-                    if c == '*':

-                        if self._peek() == '/':

-                            self._get()

-                            return ' '

-                    if c == '\000':

-                        raise UnterminatedComment()

-

-        return c

-

-    def _action(self, action):

-        """do something! What you do is determined by the argument:

-           1   Output A. Copy B to A. Get the next B.

-           2   Copy B to A. Get the next B. (Delete A).

-           3   Get the next B. (Delete B).

-           action treats a string as a single character. Wow!

-           action recognizes a regular expression if it is preceded by ( or , or =.

-        """

-        if action <= 1:

-            self._outA()

-

-        if action <= 2:

-            self.theA = self.theB

-            if self.theA == "'" or self.theA == '"':

-                while 1:

-                    self._outA()

-                    self.theA = self._get()

-                    if self.theA == self.theB:

-                        break

-                    if self.theA <= '\n':

-                        raise UnterminatedStringLiteral()

-                    if self.theA == '\\':

-                        self._outA()

-                        self.theA = self._get()

-

-

-        if action <= 3:

-            self.theB = self._next()

-            if self.theB == '/' and (self.theA == '(' or self.theA == ',' or

-                                     self.theA == '=' or self.theA == ':' or

-                                     self.theA == '[' or self.theA == '?' or

-                                     self.theA == '!' or self.theA == '&' or

-                                     self.theA == '|' or self.theA == ';' or

-                                     self.theA == '{' or self.theA == '}' or

-                                     self.theA == '\n'):

-                self._outA()

-                self._outB()

-                while 1:

-                    self.theA = self._get()

-                    if self.theA == '/':

-                        break

-                    elif self.theA == '\\':

-                        self._outA()

-                        self.theA = self._get()

-                    elif self.theA <= '\n':

-                        raise UnterminatedRegularExpression()

-                    self._outA()

-                self.theB = self._next()

-

-

-    def _jsmin(self):

-        """Copy the input to the output, deleting the characters which are

-           insignificant to JavaScript. Comments will be removed. Tabs will be

-           replaced with spaces. Carriage returns will be replaced with linefeeds.

-           Most spaces and linefeeds will be removed.

-        """

-        self.theA = '\n'

-        self._action(3)

-

-        while self.theA != '\000':

-            if self.theA == ' ':

-                if isAlphanum(self.theB):

-                    self._action(1)

-                else:

-                    self._action(2)

-            elif self.theA == '\n':

-                if self.theB in ['{', '[', '(', '+', '-']:

-                    self._action(1)

-                elif self.theB == ' ':

-                    self._action(3)

-                else:

-                    if isAlphanum(self.theB):

-                        self._action(1)

-                    else:

-                        self._action(2)

-            else:

-                if self.theB == ' ':

-                    if isAlphanum(self.theA):

-                        self._action(1)

-                    else:

-                        self._action(3)

-                elif self.theB == '\n':

-                    if self.theA in ['}', ']', ')', '+', '-', '"', '\'']:

-                        self._action(1)

-                    else:

-                        if isAlphanum(self.theA):

-                            self._action(1)

-                        else:

-                            self._action(3)

-                else:

-                    self._action(1)

-

-    def minify(self, instream, outstream):

-        self.instream = instream

-        self.outstream = outstream

-        self.theA = '\n'

-        self.theB = None

-        self.theLookahead = None

-

-        self._jsmin()

-        self.instream.close()

-

-if __name__ == '__main__':

-    import sys

-    jsm = JavascriptMinify()

-    jsm.minify(sys.stdin, sys.stdout)

+../deps/v8/tools/jsmin.py
\ No newline at end of file
diff --git a/tools/run-valgrind.py b/tools/run-valgrind.py
new file mode 120000
index 00000000000..07935ad7d4f
--- /dev/null
+++ b/tools/run-valgrind.py
@@ -0,0 +1 @@
+../deps/v8/tools/run-valgrind.py
\ No newline at end of file
diff --git a/tools/test.py b/tools/test.py
new file mode 100755
index 00000000000..7c17e9d6940
--- /dev/null
+++ b/tools/test.py
@@ -0,0 +1,1343 @@
+#!/usr/bin/env python
+#
+# Copyright 2008 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+import imp
+import optparse
+import os
+from os.path import join, dirname, abspath, basename, isdir, exists
+import platform
+import re
+import signal
+import subprocess
+import sys
+import tempfile
+import time
+import threading
+import utils
+from Queue import Queue, Empty
+
+
+VERBOSE = False
+
+
+# ---------------------------------------------
+# --- P r o g r e s s   I n d i c a t o r s ---
+# ---------------------------------------------
+
+
+class ProgressIndicator(object):
+
+  def __init__(self, cases):
+    self.cases = cases
+    self.queue = Queue(len(cases))
+    for case in cases:
+      self.queue.put_nowait(case)
+    self.succeeded = 0
+    self.remaining = len(cases)
+    self.total = len(cases)
+    self.failed = [ ]
+    self.crashed = 0
+    self.terminate = False
+    self.lock = threading.Lock()
+
+  def PrintFailureHeader(self, test):
+    if test.IsNegative():
+      negative_marker = '[negative] '
+    else:
+      negative_marker = ''
+    print "=== %(label)s %(negative)s===" % {
+      'label': test.GetLabel(),
+      'negative': negative_marker
+    }
+    print "Path: %s" % "/".join(test.path)
+
+  def Run(self, tasks):
+    self.Starting()
+    threads = []
+    # Spawn N-1 threads and then use this thread as the last one.
+    # That way -j1 avoids threading altogether which is a nice fallback
+    # in case of threading problems.
+    for i in xrange(tasks - 1):
+      thread = threading.Thread(target=self.RunSingle, args=[])
+      threads.append(thread)
+      thread.start()
+    try:
+      self.RunSingle()
+      # Wait for the remaining threads
+      for thread in threads:
+        # Use a timeout so that signals (ctrl-c) will be processed.
+        thread.join(timeout=10000000)
+    except Exception, e:
+      # If there's an exception we schedule an interruption for any
+      # remaining threads.
+      self.terminate = True
+      # ...and then reraise the exception to bail out
+      raise
+    self.Done()
+    return not self.failed
+
+  def RunSingle(self):
+    while not self.terminate:
+      try:
+        test = self.queue.get_nowait()
+      except Empty:
+        return
+      case = test.case
+      self.lock.acquire()
+      self.AboutToRun(case)
+      self.lock.release()
+      try:
+        start = time.time()
+        output = case.Run()
+        case.duration = (time.time() - start)
+      except IOError, e:
+        assert self.terminate
+        return
+      if self.terminate:
+        return
+      self.lock.acquire()
+      if output.UnexpectedOutput():
+        self.failed.append(output)
+        if output.HasCrashed():
+          self.crashed += 1
+      else:
+        self.succeeded += 1
+      self.remaining -= 1
+      self.HasRun(output)
+      self.lock.release()
+
+
+def EscapeCommand(command):
+  parts = []
+  for part in command:
+    if ' ' in part:
+      # Escape spaces.  We may need to escape more characters for this
+      # to work properly.
+      parts.append('"%s"' % part)
+    else:
+      parts.append(part)
+  return " ".join(parts)
+
+
+class SimpleProgressIndicator(ProgressIndicator):
+
+  def Starting(self):
+    print 'Running %i tests' % len(self.cases)
+
+  def Done(self):
+    print
+    for failed in self.failed:
+      self.PrintFailureHeader(failed.test)
+      if failed.output.stderr:
+        print "--- stderr ---"
+        print failed.output.stderr.strip()
+      if failed.output.stdout:
+        print "--- stdout ---"
+        print failed.output.stdout.strip()
+      print "Command: %s" % EscapeCommand(failed.command)
+      if failed.HasCrashed():
+        print "--- CRASHED ---"
+      if failed.HasTimedOut():
+        print "--- TIMEOUT ---"
+    if len(self.failed) == 0:
+      print "==="
+      print "=== All tests succeeded"
+      print "==="
+    else:
+      print
+      print "==="
+      print "=== %i tests failed" % len(self.failed)
+      if self.crashed > 0:
+        print "=== %i tests CRASHED" % self.crashed
+      print "==="
+
+
+class VerboseProgressIndicator(SimpleProgressIndicator):
+
+  def AboutToRun(self, case):
+    print 'Starting %s...' % case.GetLabel()
+    sys.stdout.flush()
+
+  def HasRun(self, output):
+    if output.UnexpectedOutput():
+      if output.HasCrashed():
+        outcome = 'CRASH'
+      else:
+        outcome = 'FAIL'
+    else:
+      outcome = 'pass'
+    print 'Done running %s: %s' % (output.test.GetLabel(), outcome)
+
+
+class DotsProgressIndicator(SimpleProgressIndicator):
+
+  def AboutToRun(self, case):
+    pass
+
+  def HasRun(self, output):
+    total = self.succeeded + len(self.failed)
+    if (total > 1) and (total % 50 == 1):
+      sys.stdout.write('\n')
+    if output.UnexpectedOutput():
+      if output.HasCrashed():
+        sys.stdout.write('C')
+        sys.stdout.flush()
+      elif output.HasTimedOut():
+        sys.stdout.write('T')
+        sys.stdout.flush()
+      else:
+        sys.stdout.write('F')
+        sys.stdout.flush()
+    else:
+      sys.stdout.write('.')
+      sys.stdout.flush()
+
+
+class CompactProgressIndicator(ProgressIndicator):
+
+  def __init__(self, cases, templates):
+    super(CompactProgressIndicator, self).__init__(cases)
+    self.templates = templates
+    self.last_status_length = 0
+    self.start_time = time.time()
+
+  def Starting(self):
+    pass
+
+  def Done(self):
+    self.PrintProgress('Done')
+
+  def AboutToRun(self, case):
+    self.PrintProgress(case.GetLabel())
+
+  def HasRun(self, output):
+    if output.UnexpectedOutput():
+      self.ClearLine(self.last_status_length)
+      self.PrintFailureHeader(output.test)
+      stdout = output.output.stdout.strip()
+      if len(stdout):
+        print self.templates['stdout'] % stdout
+      stderr = output.output.stderr.strip()
+      if len(stderr):
+        print self.templates['stderr'] % stderr
+      print "Command: %s" % EscapeCommand(output.command)
+      if output.HasCrashed():
+        print "--- CRASHED ---"
+      if output.HasTimedOut():
+        print "--- TIMEOUT ---"
+
+  def Truncate(self, str, length):
+    if length and (len(str) > (length - 3)):
+      return str[:(length-3)] + "..."
+    else:
+      return str
+
+  def PrintProgress(self, name):
+    self.ClearLine(self.last_status_length)
+    elapsed = time.time() - self.start_time
+    status = self.templates['status_line'] % {
+      'passed': self.succeeded,
+      'remaining': (((self.total - self.remaining) * 100) // self.total),
+      'failed': len(self.failed),
+      'test': name,
+      'mins': int(elapsed) / 60,
+      'secs': int(elapsed) % 60
+    }
+    status = self.Truncate(status, 78)
+    self.last_status_length = len(status)
+    print status,
+    sys.stdout.flush()
+
+
+class ColorProgressIndicator(CompactProgressIndicator):
+
+  def __init__(self, cases):
+    templates = {
+      'status_line': "[%(mins)02i:%(secs)02i|\033[34m%%%(remaining) 4d\033[0m|\033[32m+%(passed) 4d\033[0m|\033[31m-%(failed) 4d\033[0m]: %(test)s",
+      'stdout': "\033[1m%s\033[0m",
+      'stderr': "\033[31m%s\033[0m",
+    }
+    super(ColorProgressIndicator, self).__init__(cases, templates)
+
+  def ClearLine(self, last_line_length):
+    print "\033[1K\r",
+
+
+class MonochromeProgressIndicator(CompactProgressIndicator):
+
+  def __init__(self, cases):
+    templates = {
+      'status_line': "[%(mins)02i:%(secs)02i|%%%(remaining) 4d|+%(passed) 4d|-%(failed) 4d]: %(test)s",
+      'stdout': '%s',
+      'stderr': '%s',
+      'clear': lambda last_line_length: ("\r" + (" " * last_line_length) + "\r"),
+      'max_length': 78
+    }
+    super(MonochromeProgressIndicator, self).__init__(cases, templates)
+
+  def ClearLine(self, last_line_length):
+    print ("\r" + (" " * last_line_length) + "\r"),
+
+
+PROGRESS_INDICATORS = {
+  'verbose': VerboseProgressIndicator,
+  'dots': DotsProgressIndicator,
+  'color': ColorProgressIndicator,
+  'mono': MonochromeProgressIndicator
+}
+
+
+# -------------------------
+# --- F r a m e w o r k ---
+# -------------------------
+
+
+class CommandOutput(object):
+
+  def __init__(self, exit_code, timed_out, stdout, stderr):
+    self.exit_code = exit_code
+    self.timed_out = timed_out
+    self.stdout = stdout
+    self.stderr = stderr
+
+
+class TestCase(object):
+
+  def __init__(self, context, path):
+    self.path = path
+    self.context = context
+    self.failed = None
+    self.duration = None
+
+  def IsNegative(self):
+    return False
+
+  def CompareTime(self, other):
+    return cmp(other.duration, self.duration)
+
+  def DidFail(self, output):
+    if self.failed is None:
+      self.failed = self.IsFailureOutput(output)
+    return self.failed
+
+  def IsFailureOutput(self, output):
+    return output.exit_code != 0
+
+  def GetSource(self):
+    return "(no source available)"
+
+  def RunCommand(self, command):
+    full_command = self.context.processor(command)
+    output = Execute(full_command, self.context, self.context.timeout)
+    return TestOutput(self, full_command, output)
+
+  def Run(self):
+    return self.RunCommand(self.GetCommand())
+
+
+class TestOutput(object):
+
+  def __init__(self, test, command, output):
+    self.test = test
+    self.command = command
+    self.output = output
+
+  def UnexpectedOutput(self):
+    if self.HasCrashed():
+      outcome = CRASH
+    elif self.HasFailed():
+      outcome = FAIL
+    else:
+      outcome = PASS
+    return not outcome in self.test.outcomes
+
+  def HasCrashed(self):
+    if utils.IsWindows():
+      return 0x80000000 & self.output.exit_code and not (0x3FFFFF00 & self.output.exit_code)
+    else:
+      # Timed out tests will have exit_code -signal.SIGTERM.
+      if self.output.timed_out:
+        return False
+      return self.output.exit_code < 0 and \
+             self.output.exit_code != -signal.SIGABRT
+
+  def HasTimedOut(self):
+    return self.output.timed_out;
+    
+  def HasFailed(self):
+    execution_failed = self.test.DidFail(self.output)
+    if self.test.IsNegative():
+      return not execution_failed
+    else:
+      return execution_failed
+
+
+def KillProcessWithID(pid):
+  if utils.IsWindows():
+    os.popen('taskkill /T /F /PID %d' % pid)
+  else:
+    os.kill(pid, signal.SIGTERM)
+
+
+MAX_SLEEP_TIME = 0.1
+INITIAL_SLEEP_TIME = 0.0001
+SLEEP_TIME_FACTOR = 1.25
+
+SEM_INVALID_VALUE = -1
+SEM_NOGPFAULTERRORBOX = 0x0002 # Microsoft Platform SDK WinBase.h
+
+def Win32SetErrorMode(mode):
+  prev_error_mode = SEM_INVALID_VALUE
+  try:
+    import ctypes
+    prev_error_mode = ctypes.windll.kernel32.SetErrorMode(mode);
+  except ImportError:
+    pass
+  return prev_error_mode
+
+def RunProcess(context, timeout, args, **rest):
+  if context.verbose: print "#", " ".join(args)
+  popen_args = args
+  prev_error_mode = SEM_INVALID_VALUE;
+  if utils.IsWindows():
+    popen_args = '"' + subprocess.list2cmdline(args) + '"'
+    if context.suppress_dialogs:
+      # Try to change the error mode to avoid dialogs on fatal errors. Don't
+      # touch any existing error mode flags by merging the existing error mode.
+      # See http://blogs.msdn.com/oldnewthing/archive/2004/07/27/198410.aspx.
+      error_mode = SEM_NOGPFAULTERRORBOX;
+      prev_error_mode = Win32SetErrorMode(error_mode);
+      Win32SetErrorMode(error_mode | prev_error_mode);
+  process = subprocess.Popen(
+    shell = utils.IsWindows(),
+    args = popen_args,
+    **rest
+  )
+  if utils.IsWindows() and context.suppress_dialogs and prev_error_mode != SEM_INVALID_VALUE:
+    Win32SetErrorMode(prev_error_mode)
+  # Compute the end time - if the process crosses this limit we
+  # consider it timed out.
+  if timeout is None: end_time = None
+  else: end_time = time.time() + timeout
+  timed_out = False
+  # Repeatedly check the exit code from the process in a
+  # loop and keep track of whether or not it times out.
+  exit_code = None
+  sleep_time = INITIAL_SLEEP_TIME
+  while exit_code is None:
+    if (not end_time is None) and (time.time() >= end_time):
+      # Kill the process and wait for it to exit.
+      KillProcessWithID(process.pid)
+      exit_code = process.wait()
+      timed_out = True
+    else:
+      exit_code = process.poll()
+      time.sleep(sleep_time)
+      sleep_time = sleep_time * SLEEP_TIME_FACTOR
+      if sleep_time > MAX_SLEEP_TIME:
+        sleep_time = MAX_SLEEP_TIME
+  return (process, exit_code, timed_out)
+
+
+def PrintError(str):
+  sys.stderr.write(str)
+  sys.stderr.write('\n')
+
+
+def Execute(args, context, timeout=None):
+  (fd_out, outname) = tempfile.mkstemp()
+  (fd_err, errname) = tempfile.mkstemp()
+  (process, exit_code, timed_out) = RunProcess(
+    context,
+    timeout,
+    args = args,
+    stdout = fd_out,
+    stderr = fd_err,
+  )
+  os.close(fd_out)
+  os.close(fd_err)
+  output = file(outname).read()
+  errors = file(errname).read()
+  def CheckedUnlink(name):
+    try:
+      os.unlink(name)
+    except OSError, e:
+      PrintError("os.unlink() " + str(e))
+  CheckedUnlink(outname)
+  CheckedUnlink(errname)
+  return CommandOutput(exit_code, timed_out, output, errors)
+
+
+def ExecuteNoCapture(args, context, timeout=None):
+  (process, exit_code, timed_out) = RunProcess(
+    context,
+    timeout,
+    args = args,
+  )
+  return CommandOutput(exit_code, False, "", "")
+
+
+def CarCdr(path):
+  if len(path) == 0:
+    return (None, [ ])
+  else:
+    return (path[0], path[1:])
+
+
+class TestConfiguration(object):
+
+  def __init__(self, context, root):
+    self.context = context
+    self.root = root
+
+  def Contains(self, path, file):
+    if len(path) > len(file):
+      return False
+    for i in xrange(len(path)):
+      if not path[i].match(file[i]):
+        return False
+    return True
+
+  def GetTestStatus(self, sections, defs):
+    pass
+
+
+class TestSuite(object):
+
+  def __init__(self, name):
+    self.name = name
+
+  def GetName(self):
+    return self.name
+
+
+class TestRepository(TestSuite):
+
+  def __init__(self, path):
+    normalized_path = abspath(path)
+    super(TestRepository, self).__init__(basename(normalized_path))
+    self.path = normalized_path
+    self.is_loaded = False
+    self.config = None
+
+  def GetConfiguration(self, context):
+    if self.is_loaded:
+      return self.config
+    self.is_loaded = True
+    file = None
+    try:
+      (file, pathname, description) = imp.find_module('testcfg', [ self.path ])
+      module = imp.load_module('testcfg', file, pathname, description)
+      self.config = module.GetConfiguration(context, self.path)
+    finally:
+      if file:
+        file.close()
+    return self.config
+
+  def GetBuildRequirements(self, path, context):
+    return self.GetConfiguration(context).GetBuildRequirements()
+
+  def ListTests(self, current_path, path, context, mode):
+    return self.GetConfiguration(context).ListTests(current_path, path, mode)
+
+  def GetTestStatus(self, context, sections, defs):
+    self.GetConfiguration(context).GetTestStatus(sections, defs)
+
+
+class LiteralTestSuite(TestSuite):
+
+  def __init__(self, tests):
+    super(LiteralTestSuite, self).__init__('root')
+    self.tests = tests
+
+  def GetBuildRequirements(self, path, context):
+    (name, rest) = CarCdr(path)
+    result = [ ]
+    for test in self.tests:
+      if not name or name.match(test.GetName()):
+        result += test.GetBuildRequirements(rest, context)
+    return result
+
+  def ListTests(self, current_path, path, context, mode):
+    (name, rest) = CarCdr(path)
+    result = [ ]
+    for test in self.tests:
+      test_name = test.GetName()
+      if not name or name.match(test_name):
+        full_path = current_path + [test_name]
+        result += test.ListTests(full_path, path, context, mode)
+    return result
+
+  def GetTestStatus(self, context, sections, defs):
+    for test in self.tests:
+      test.GetTestStatus(context, sections, defs)
+
+
+SUFFIX = {'debug': '_g', 'release': ''}
+
+
+class Context(object):
+
+  def __init__(self, workspace, buildspace, verbose, vm, timeout, processor, suppress_dialogs):
+    self.workspace = workspace
+    self.buildspace = buildspace
+    self.verbose = verbose
+    self.vm_root = vm
+    self.timeout = timeout
+    self.processor = processor
+    self.suppress_dialogs = suppress_dialogs
+
+  def GetVm(self, mode):
+    if mode == 'debug':
+      name = 'build/debug/node'
+    else:
+      name = 'build/default/node'
+    if utils.IsWindows() and not name.endswith('.exe'):
+      name = name + '.exe'
+    return name
+
+def RunTestCases(all_cases, progress, tasks):
+  def DoSkip(case):
+    return SKIP in c.outcomes or SLOW in c.outcomes
+  cases_to_run = [ c for c in all_cases if not DoSkip(c) ]
+  progress = PROGRESS_INDICATORS[progress](cases_to_run)
+  return progress.Run(tasks)
+
+
+def BuildRequirements(context, requirements, mode, scons_flags):
+  command_line = (['scons', '-Y', context.workspace, 'mode=' + ",".join(mode)]
+                  + requirements
+                  + scons_flags)
+  output = ExecuteNoCapture(command_line, context)
+  return output.exit_code == 0
+
+
+# -------------------------------------------
+# --- T e s t   C o n f i g u r a t i o n ---
+# -------------------------------------------
+
+
+SKIP = 'skip'
+FAIL = 'fail'
+PASS = 'pass'
+OKAY = 'okay'
+TIMEOUT = 'timeout'
+CRASH = 'crash'
+SLOW = 'slow'
+
+
+class Expression(object):
+  pass
+
+
+class Constant(Expression):
+
+  def __init__(self, value):
+    self.value = value
+
+  def Evaluate(self, env, defs):
+    return self.value
+
+
+class Variable(Expression):
+
+  def __init__(self, name):
+    self.name = name
+
+  def GetOutcomes(self, env, defs):
+    if self.name in env: return ListSet([env[self.name]])
+    else: return Nothing()
+
+
+class Outcome(Expression):
+
+  def __init__(self, name):
+    self.name = name
+
+  def GetOutcomes(self, env, defs):
+    if self.name in defs:
+      return defs[self.name].GetOutcomes(env, defs)
+    else:
+      return ListSet([self.name])
+
+
+class Set(object):
+  pass
+
+
+class ListSet(Set):
+
+  def __init__(self, elms):
+    self.elms = elms
+
+  def __str__(self):
+    return "ListSet%s" % str(self.elms)
+
+  def Intersect(self, that):
+    if not isinstance(that, ListSet):
+      return that.Intersect(self)
+    return ListSet([ x for x in self.elms if x in that.elms ])
+
+  def Union(self, that):
+    if not isinstance(that, ListSet):
+      return that.Union(self)
+    return ListSet(self.elms + [ x for x in that.elms if x not in self.elms ])
+
+  def IsEmpty(self):
+    return len(self.elms) == 0
+
+
+class Everything(Set):
+
+  def Intersect(self, that):
+    return that
+
+  def Union(self, that):
+    return self
+
+  def IsEmpty(self):
+    return False
+
+
+class Nothing(Set):
+
+  def Intersect(self, that):
+    return self
+
+  def Union(self, that):
+    return that
+
+  def IsEmpty(self):
+    return True
+
+
+class Operation(Expression):
+
+  def __init__(self, left, op, right):
+    self.left = left
+    self.op = op
+    self.right = right
+
+  def Evaluate(self, env, defs):
+    if self.op == '||' or self.op == ',':
+      return self.left.Evaluate(env, defs) or self.right.Evaluate(env, defs)
+    elif self.op == 'if':
+      return False
+    elif self.op == '==':
+      inter = self.left.GetOutcomes(env, defs).Intersect(self.right.GetOutcomes(env, defs))
+      return not inter.IsEmpty()
+    else:
+      assert self.op == '&&'
+      return self.left.Evaluate(env, defs) and self.right.Evaluate(env, defs)
+
+  def GetOutcomes(self, env, defs):
+    if self.op == '||' or self.op == ',':
+      return self.left.GetOutcomes(env, defs).Union(self.right.GetOutcomes(env, defs))
+    elif self.op == 'if':
+      if self.right.Evaluate(env, defs): return self.left.GetOutcomes(env, defs)
+      else: return Nothing()
+    else:
+      assert self.op == '&&'
+      return self.left.GetOutcomes(env, defs).Intersect(self.right.GetOutcomes(env, defs))
+
+
+def IsAlpha(str):
+  for char in str:
+    if not (char.isalpha() or char.isdigit() or char == '_'):
+      return False
+  return True
+
+
+class Tokenizer(object):
+  """A simple string tokenizer that chops expressions into variables,
+  parens and operators"""
+
+  def __init__(self, expr):
+    self.index = 0
+    self.expr = expr
+    self.length = len(expr)
+    self.tokens = None
+
+  def Current(self, length = 1):
+    if not self.HasMore(length): return ""
+    return self.expr[self.index:self.index+length]
+
+  def HasMore(self, length = 1):
+    return self.index < self.length + (length - 1)
+
+  def Advance(self, count = 1):
+    self.index = self.index + count
+
+  def AddToken(self, token):
+    self.tokens.append(token)
+
+  def SkipSpaces(self):
+    while self.HasMore() and self.Current().isspace():
+      self.Advance()
+
+  def Tokenize(self):
+    self.tokens = [ ]
+    while self.HasMore():
+      self.SkipSpaces()
+      if not self.HasMore():
+        return None
+      if self.Current() == '(':
+        self.AddToken('(')
+        self.Advance()
+      elif self.Current() == ')':
+        self.AddToken(')')
+        self.Advance()
+      elif self.Current() == '$':
+        self.AddToken('$')
+        self.Advance()
+      elif self.Current() == ',':
+        self.AddToken(',')
+        self.Advance()
+      elif IsAlpha(self.Current()):
+        buf = ""
+        while self.HasMore() and IsAlpha(self.Current()):
+          buf += self.Current()
+          self.Advance()
+        self.AddToken(buf)
+      elif self.Current(2) == '&&':
+        self.AddToken('&&')
+        self.Advance(2)
+      elif self.Current(2) == '||':
+        self.AddToken('||')
+        self.Advance(2)
+      elif self.Current(2) == '==':
+        self.AddToken('==')
+        self.Advance(2)
+      else:
+        return None
+    return self.tokens
+
+
+class Scanner(object):
+  """A simple scanner that can serve out tokens from a given list"""
+
+  def __init__(self, tokens):
+    self.tokens = tokens
+    self.length = len(tokens)
+    self.index = 0
+
+  def HasMore(self):
+    return self.index < self.length
+
+  def Current(self):
+    return self.tokens[self.index]
+
+  def Advance(self):
+    self.index = self.index + 1
+
+
+def ParseAtomicExpression(scan):
+  if scan.Current() == "true":
+    scan.Advance()
+    return Constant(True)
+  elif scan.Current() == "false":
+    scan.Advance()
+    return Constant(False)
+  elif IsAlpha(scan.Current()):
+    name = scan.Current()
+    scan.Advance()
+    return Outcome(name.lower())
+  elif scan.Current() == '$':
+    scan.Advance()
+    if not IsAlpha(scan.Current()):
+      return None
+    name = scan.Current()
+    scan.Advance()
+    return Variable(name.lower())
+  elif scan.Current() == '(':
+    scan.Advance()
+    result = ParseLogicalExpression(scan)
+    if (not result) or (scan.Current() != ')'):
+      return None
+    scan.Advance()
+    return result
+  else:
+    return None
+
+
+BINARIES = ['==']
+def ParseOperatorExpression(scan):
+  left = ParseAtomicExpression(scan)
+  if not left: return None
+  while scan.HasMore() and (scan.Current() in BINARIES):
+    op = scan.Current()
+    scan.Advance()
+    right = ParseOperatorExpression(scan)
+    if not right:
+      return None
+    left = Operation(left, op, right)
+  return left
+
+
+def ParseConditionalExpression(scan):
+  left = ParseOperatorExpression(scan)
+  if not left: return None
+  while scan.HasMore() and (scan.Current() == 'if'):
+    scan.Advance()
+    right = ParseOperatorExpression(scan)
+    if not right:
+      return None
+    left=  Operation(left, 'if', right)
+  return left
+
+
+LOGICALS = ["&&", "||", ","]
+def ParseLogicalExpression(scan):
+  left = ParseConditionalExpression(scan)
+  if not left: return None
+  while scan.HasMore() and (scan.Current() in LOGICALS):
+    op = scan.Current()
+    scan.Advance()
+    right = ParseConditionalExpression(scan)
+    if not right:
+      return None
+    left = Operation(left, op, right)
+  return left
+
+
+def ParseCondition(expr):
+  """Parses a logical expression into an Expression object"""
+  tokens = Tokenizer(expr).Tokenize()
+  if not tokens:
+    print "Malformed expression: '%s'" % expr
+    return None
+  scan = Scanner(tokens)
+  ast = ParseLogicalExpression(scan)
+  if not ast:
+    print "Malformed expression: '%s'" % expr
+    return None
+  if scan.HasMore():
+    print "Malformed expression: '%s'" % expr
+    return None
+  return ast
+
+
+class ClassifiedTest(object):
+
+  def __init__(self, case, outcomes):
+    self.case = case
+    self.outcomes = outcomes
+
+
+class Configuration(object):
+  """The parsed contents of a configuration file"""
+
+  def __init__(self, sections, defs):
+    self.sections = sections
+    self.defs = defs
+
+  def ClassifyTests(self, cases, env):
+    sections = [s for s in self.sections if s.condition.Evaluate(env, self.defs)]
+    all_rules = reduce(list.__add__, [s.rules for s in sections], [])
+    unused_rules = set(all_rules)
+    result = [ ]
+    all_outcomes = set([])
+    for case in cases:
+      matches = [ r for r in all_rules if r.Contains(case.path) ]
+      outcomes = set([])
+      for rule in matches:
+        outcomes = outcomes.union(rule.GetOutcomes(env, self.defs))
+        unused_rules.discard(rule)
+      if not outcomes:
+        outcomes = [PASS]
+      case.outcomes = outcomes
+      all_outcomes = all_outcomes.union(outcomes)
+      result.append(ClassifiedTest(case, outcomes))
+    return (result, list(unused_rules), all_outcomes)
+
+
+class Section(object):
+  """A section of the configuration file.  Sections are enabled or
+  disabled prior to running the tests, based on their conditions"""
+
+  def __init__(self, condition):
+    self.condition = condition
+    self.rules = [ ]
+
+  def AddRule(self, rule):
+    self.rules.append(rule)
+
+
+class Rule(object):
+  """A single rule that specifies the expected outcome for a single
+  test."""
+
+  def __init__(self, raw_path, path, value):
+    self.raw_path = raw_path
+    self.path = path
+    self.value = value
+
+  def GetOutcomes(self, env, defs):
+    set = self.value.GetOutcomes(env, defs)
+    assert isinstance(set, ListSet)
+    return set.elms
+
+  def Contains(self, path):
+    if len(self.path) > len(path):
+      return False
+    for i in xrange(len(self.path)):
+      if not self.path[i].match(path[i]):
+        return False
+    return True
+
+
+HEADER_PATTERN = re.compile(r'\[([^]]+)\]')
+RULE_PATTERN = re.compile(r'\s*([^: ]*)\s*:(.*)')
+DEF_PATTERN = re.compile(r'^def\s*(\w+)\s*=(.*)$')
+PREFIX_PATTERN = re.compile(r'^\s*prefix\s+([\w\_\.\-\/]+)$')
+
+
+def ReadConfigurationInto(path, sections, defs):
+  current_section = Section(Constant(True))
+  sections.append(current_section)
+  prefix = []
+  for line in utils.ReadLinesFrom(path):
+    header_match = HEADER_PATTERN.match(line)
+    if header_match:
+      condition_str = header_match.group(1).strip()
+      condition = ParseCondition(condition_str)
+      new_section = Section(condition)
+      sections.append(new_section)
+      current_section = new_section
+      continue
+    rule_match = RULE_PATTERN.match(line)
+    if rule_match:
+      path = prefix + SplitPath(rule_match.group(1).strip())
+      value_str = rule_match.group(2).strip()
+      value = ParseCondition(value_str)
+      if not value:
+        return False
+      current_section.AddRule(Rule(rule_match.group(1), path, value))
+      continue
+    def_match = DEF_PATTERN.match(line)
+    if def_match:
+      name = def_match.group(1).lower()
+      value = ParseCondition(def_match.group(2).strip())
+      if not value:
+        return False
+      defs[name] = value
+      continue
+    prefix_match = PREFIX_PATTERN.match(line)
+    if prefix_match:
+      prefix = SplitPath(prefix_match.group(1).strip())
+      continue
+    print "Malformed line: '%s'." % line
+    return False
+  return True
+
+
+# ---------------
+# --- M a i n ---
+# ---------------
+
+
+ARCH_GUESS = utils.GuessArchitecture()
+
+
+def BuildOptions():
+  result = optparse.OptionParser()
+  result.add_option("-m", "--mode", help="The test modes in which to run (comma-separated)",
+      default='release')
+  result.add_option("-v", "--verbose", help="Verbose output",
+      default=False, action="store_true")
+  result.add_option("-S", dest="scons_flags", help="Flag to pass through to scons",
+      default=[], action="append")
+  result.add_option("-p", "--progress",
+      help="The style of progress indicator (verbose, dots, color, mono)",
+      choices=PROGRESS_INDICATORS.keys(), default="mono")
+  result.add_option("--no-build", help="Don't build requirements",
+      default=True, action="store_true")
+  result.add_option("--report", help="Print a summary of the tests to be run",
+      default=False, action="store_true")
+  result.add_option("-s", "--suite", help="A test suite",
+      default=[], action="append")
+  result.add_option("-t", "--timeout", help="Timeout in seconds",
+      default=60, type="int")
+  result.add_option("--arch", help='The architecture to run tests for',
+      default='none')
+  result.add_option("--simulator", help="Run tests with architecture simulator",
+      default='none')
+  result.add_option("--special-command", default=None)
+  result.add_option("--valgrind", help="Run tests through valgrind",
+      default=False, action="store_true")
+  result.add_option("--cat", help="Print the source of the tests",
+      default=False, action="store_true")
+  result.add_option("--warn-unused", help="Report unused rules",
+      default=False, action="store_true")
+  result.add_option("-j", help="The number of parallel tasks to run",
+      default=1, type="int")
+  result.add_option("--time", help="Print timing information after running",
+      default=False, action="store_true")
+  result.add_option("--suppress-dialogs", help="Suppress Windows dialogs for crashing tests",
+        dest="suppress_dialogs", default=True, action="store_true")
+  result.add_option("--no-suppress-dialogs", help="Display Windows dialogs for crashing tests",
+        dest="suppress_dialogs", action="store_false")
+  result.add_option("--shell", help="Path to V8 shell", default="shell");
+  return result
+
+
+def ProcessOptions(options):
+  global VERBOSE
+  VERBOSE = options.verbose
+  options.mode = options.mode.split(',')
+  for mode in options.mode:
+    if not mode in ['debug', 'release']:
+      print "Unknown mode %s" % mode
+      return False
+  if options.simulator != 'none':
+    # Simulator argument was set. Make sure arch and simulator agree.
+    if options.simulator != options.arch:
+      if options.arch == 'none':
+        options.arch = options.simulator
+      else:
+        print "Architecture %s does not match sim %s" %(options.arch, options.simulator)
+        return False
+    # Ensure that the simulator argument is handed down to scons.
+    options.scons_flags.append("simulator=" + options.simulator)
+  else:
+    # If options.arch is not set by the command line and no simulator setting
+    # was found, set the arch to the guess.
+    if options.arch == 'none':
+      options.arch = ARCH_GUESS
+  return True
+
+
+REPORT_TEMPLATE = """\
+Total: %(total)i tests
+ * %(skipped)4d tests will be skipped
+ * %(nocrash)4d tests are expected to be flaky but not crash
+ * %(pass)4d tests are expected to pass
+ * %(fail_ok)4d tests are expected to fail that we won't fix
+ * %(fail)4d tests are expected to fail that we should fix\
+"""
+
+def PrintReport(cases):
+  def IsFlaky(o):
+    return (PASS in o) and (FAIL in o) and (not CRASH in o) and (not OKAY in o)
+  def IsFailOk(o):
+    return (len(o) == 2) and (FAIL in o) and (OKAY in o)
+  unskipped = [c for c in cases if not SKIP in c.outcomes]
+  print REPORT_TEMPLATE % {
+    'total': len(cases),
+    'skipped': len(cases) - len(unskipped),
+    'nocrash': len([t for t in unskipped if IsFlaky(t.outcomes)]),
+    'pass': len([t for t in unskipped if list(t.outcomes) == [PASS]]),
+    'fail_ok': len([t for t in unskipped if IsFailOk(t.outcomes)]),
+    'fail': len([t for t in unskipped if list(t.outcomes) == [FAIL]])
+  }
+
+
+class Pattern(object):
+
+  def __init__(self, pattern):
+    self.pattern = pattern
+    self.compiled = None
+
+  def match(self, str):
+    if not self.compiled:
+      pattern = "^" + self.pattern.replace('*', '.*') + "$"
+      self.compiled = re.compile(pattern)
+    return self.compiled.match(str)
+
+  def __str__(self):
+    return self.pattern
+
+
+def SplitPath(s):
+  stripped = [ c.strip() for c in s.split('/') ]
+  return [ Pattern(s) for s in stripped if len(s) > 0 ]
+
+
+def GetSpecialCommandProcessor(value):
+  if (not value) or (value.find('@') == -1):
+    def ExpandCommand(args):
+      return args
+    return ExpandCommand
+  else:
+    pos = value.find('@')
+    import urllib
+    prefix = urllib.unquote(value[:pos]).split()
+    suffix = urllib.unquote(value[pos+1:]).split()
+    def ExpandCommand(args):
+      return prefix + args + suffix
+    return ExpandCommand
+
+
+BUILT_IN_TESTS = ['mjsunit', 'cctest', 'message']
+
+
+def GetSuites(test_root):
+  def IsSuite(path):
+    return isdir(path) and exists(join(path, 'testcfg.py'))
+  return [ f for f in os.listdir(test_root) if IsSuite(join(test_root, f)) ]
+
+
+def FormatTime(d):
+  millis = round(d * 1000) % 1000
+  return time.strftime("%M:%S.", time.gmtime(d)) + ("%03i" % millis)
+
+
+def Main():
+  parser = BuildOptions()
+  (options, args) = parser.parse_args()
+  if not ProcessOptions(options):
+    parser.print_help()
+    return 1
+
+  workspace = abspath(join(dirname(sys.argv[0]), '..'))
+  suites = GetSuites(join(workspace, 'test'))
+  repositories = [TestRepository(join(workspace, 'test', name)) for name in suites]
+  repositories += [TestRepository(a) for a in options.suite]
+
+  root = LiteralTestSuite(repositories)
+  if len(args) == 0:
+    paths = [SplitPath(t) for t in BUILT_IN_TESTS]
+  else:
+    paths = [ ]
+    for arg in args:
+      path = SplitPath(arg)
+      paths.append(path)
+
+  # Check for --valgrind option. If enabled, we overwrite the special
+  # command flag with a command that uses the run-valgrind.py script.
+  if options.valgrind:
+    run_valgrind = join(workspace, "tools", "run-valgrind.py")
+    options.special_command = "python -u " + run_valgrind + " @"
+
+  shell = abspath(options.shell)
+  buildspace = dirname(shell)
+  context = Context(workspace, buildspace, VERBOSE,
+                    shell,
+                    options.timeout,
+                    GetSpecialCommandProcessor(options.special_command),
+                    options.suppress_dialogs)
+  # First build the required targets
+  if not options.no_build:
+    reqs = [ ]
+    for path in paths:
+      reqs += root.GetBuildRequirements(path, context)
+    reqs = list(set(reqs))
+    if len(reqs) > 0:
+      if options.j != 1:
+        options.scons_flags += ['-j', str(options.j)]
+      if not BuildRequirements(context, reqs, options.mode, options.scons_flags):
+        return 1
+
+  # Get status for tests
+  sections = [ ]
+  defs = { }
+  root.GetTestStatus(context, sections, defs)
+  config = Configuration(sections, defs)
+
+  # List the tests
+  all_cases = [ ]
+  all_unused = [ ]
+  unclassified_tests = [ ]
+  globally_unused_rules = None
+  for path in paths:
+    for mode in options.mode:
+      if not exists(context.GetVm(mode)):
+        print "Can't find shell executable: '%s'" % context.GetVm(mode)
+        continue
+      env = {
+        'mode': mode,
+        'system': utils.GuessOS(),
+        'arch': options.arch,
+        'simulator': options.simulator
+      }
+      test_list = root.ListTests([], path, context, mode)
+      unclassified_tests += test_list
+      (cases, unused_rules, all_outcomes) = config.ClassifyTests(test_list, env)
+      if globally_unused_rules is None:
+        globally_unused_rules = set(unused_rules)
+      else:
+        globally_unused_rules = globally_unused_rules.intersection(unused_rules)
+      all_cases += cases
+      all_unused.append(unused_rules)
+
+  if options.cat:
+    visited = set()
+    for test in unclassified_tests:
+      key = tuple(test.path)
+      if key in visited:
+        continue
+      visited.add(key)
+      print "--- begin source: %s ---" % test.GetLabel()
+      source = test.GetSource().strip()
+      print source
+      print "--- end source: %s ---" % test.GetLabel()
+    return 0
+
+  if options.warn_unused:
+    for rule in globally_unused_rules:
+      print "Rule for '%s' was not used." % '/'.join([str(s) for s in rule.path])
+
+  if options.report:
+    PrintReport(all_cases)
+
+  result = None
+  if len(all_cases) == 0:
+    print "No tests to run."
+    return 0
+  else:
+    try:
+      start = time.time()
+      if RunTestCases(all_cases, options.progress, options.j):
+        result = 0
+      else:
+        result = 1
+      duration = time.time() - start
+    except KeyboardInterrupt:
+      print "Interrupted"
+      return 1
+
+  if options.time:
+    # Write the times to stderr to make it easy to separate from the
+    # test output.
+    print
+    sys.stderr.write("--- Total time: %s ---\n" % FormatTime(duration))
+    timed_tests = [ t.case for t in all_cases if not t.case.duration is None ]
+    timed_tests.sort(lambda a, b: a.CompareTime(b))
+    index = 1
+    for entry in timed_tests[:20]:
+      t = FormatTime(entry.duration)
+      sys.stderr.write("%4i (%s) %s\n" % (index, t, entry.GetLabel()))
+      index += 1
+
+  return result
+
+
+if __name__ == '__main__':
+  sys.exit(Main())
diff --git a/tools/utils.py b/tools/utils.py
new file mode 120000
index 00000000000..7a7b1b30632
--- /dev/null
+++ b/tools/utils.py
@@ -0,0 +1 @@
+../deps/v8/tools/utils.py
\ No newline at end of file