tests/SConscript - arm/gem5 - Git at Google

 # -*- mode:python -*-

 # Copyright (c) 2004-2006 The Regents of The University of Michigan
 # 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 the copyright holders 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.
 #
 # Authors: Steve Reinhardt
 #          Kevin Lim

 import os, signal
 import sys, time
 import glob
 from SCons.Script.SConscript import SConsEnvironment

 Import('env')

 env['DIFFOUT'] = File('diff-out')

 # get the termcap from the environment
 termcap = env['TERMCAP']

 # Dict that accumulates lists of tests by category (quick, medium, long)
 env.Tests = {}

 def contents(node):
     return file(str(node)).read()

 # functions to parse return value from scons Execute()... not the same
 # as wait() etc., so python built-in os funcs don't work.
 def signaled(status):
     return (status & 0x80) != 0;

 def signum(status):
     return (status & 0x7f);

 # List of signals that indicate that we should retry the test rather
 # than consider it failed.
 retry_signals = (signal.SIGTERM, signal.SIGKILL, signal.SIGINT,
                  signal.SIGQUIT, signal.SIGHUP)

 # regular expressions of lines to ignore when diffing outputs
 output_ignore_regexes = (
     '^command line:',		# for stdout file
     '^gem5 compiled ',		# for stderr file
     '^gem5 started ',		# for stderr file
     '^gem5 executing on ',	# for stderr file
     '^Simulation complete at',	# for stderr file
     '^Listening for',		# for stderr file
     'listening for remote gdb',	# for stderr file
     )

 output_ignore_args = ' '.join(["-I '"+s+"'" for s in output_ignore_regexes])

 output_ignore_args += ' --exclude=stats.txt --exclude=outdiff'

 def run_test(target, source, env):
     """Check output from running test.

     Targets are as follows:
     target[0] : status

     Sources are:
     source[0] : gem5 binary
     source[1] : tests/run.py script
     source[2] : reference stats file

     """
     # make sure target files are all gone
     for t in target:
         if os.path.exists(t.abspath):
             env.Execute(Delete(t.abspath))

     tgt_dir = os.path.dirname(str(target[0]))

     # Base command for running test.  We mess around with indirectly
     # referring to files via SOURCES and TARGETS so that scons can mess
     # with paths all it wants to and we still get the right files.
     cmd = '${SOURCES[0]} -d %s -re ${SOURCES[1]} %s' % (tgt_dir, tgt_dir)

     # Prefix test run with batch job submission command if appropriate.
     # Batch command also supports timeout arg (in seconds, not minutes).
     timeout = 15 * 60 # used to be a param, probably should be again
     if env['BATCH']:
         cmd = '%s -t %d %s' % (env['BATCH_CMD'], timeout, cmd)
     # The slowest regression (bzip2) requires ~2.8 hours;
     # 4 hours was chosen to be conservative.
     elif env['TIMEOUT']:
         cmd = 'timeout 4h %s' % cmd

     # Create a default value for the status string, changed as needed
     # based on the status.
     status_str = "passed."

     pre_exec_time = time.time()
     status = env.Execute(env.subst(cmd, target=target, source=source))
     if status == 0:
         # gem5 terminated normally.
         # Run diff on output & ref directories to find differences.
         # Exclude the stats file since we will use diff-out on that.

         # NFS file systems can be annoying and not have updated yet
         # wait until we see the file modified
         statsdiff = os.path.join(tgt_dir, 'statsdiff')
         m_time = 0
         nap = 0
         while m_time < pre_exec_time and nap < 10:
             try:
                 m_time = os.stat(statsdiff).st_mtime
             except OSError:
                 pass
             time.sleep(1)
             nap += 1

         outdiff = os.path.join(tgt_dir, 'outdiff')
         # tack 'true' on the end so scons doesn't report diff's
         # non-zero exit code as a build error
         diffcmd = 'diff -ubrs %s ${SOURCES[2].dir} %s > %s; true' \
                   % (output_ignore_args, tgt_dir, outdiff)
         env.Execute(env.subst(diffcmd, target=target, source=source))
         print "===== Output differences ====="
         print contents(outdiff)
         # Run diff-out on stats.txt file
         diffcmd = '$DIFFOUT ${SOURCES[2]} %s > %s' \
                   % (os.path.join(tgt_dir, 'stats.txt'), statsdiff)
         diffcmd = env.subst(diffcmd, target=target, source=source)
         diff_status = env.Execute(diffcmd, strfunction=None)
         # If there is a difference, change the status string to say so
         if diff_status != 0:
             status_str = "CHANGED!"
         print "===== Statistics differences ====="
         print contents(statsdiff)

     else: # gem5 exit status != 0
         # Consider it a failed test unless the exit status is 2
         status_str = "FAILED!"
         # gem5 did not terminate properly, so no need to check the output
         if env['TIMEOUT'] and status == 124:
             status_str = "TIMED-OUT!"
         elif signaled(status):
             print 'gem5 terminated with signal', signum(status)
             if signum(status) in retry_signals:
                 # Consider the test incomplete; don't create a 'status' output.
                 # Hand the return status to scons and let scons decide what
                 # to do about it (typically terminate unless run with -k).
                 return status
         elif status == 2:
             # The test was skipped, change the status string to say so
             status_str = "skipped."
         else:
             print 'gem5 exited with non-zero status', status
         # complete but failed execution (call to exit() with non-zero
         # status, SIGABORT due to assertion failure, etc.)... fall through
         # and generate FAILED status as if output comparison had failed

     # Generate status file contents based on exit status of gem5 and diff-out
     f = file(str(target[0]), 'w')
     print >>f, tgt_dir, status_str
     f.close()
     # done
     return 0

 def run_test_string(target, source, env):
     return env.subst("Running test in ${TARGETS[0].dir}.",
                      target=target, source=source)

 testAction = env.Action(run_test, run_test_string)

 def print_test(target, source, env):
     # print the status with colours to make it easier to see what
     # passed and what failed
     line = contents(source[0])

     # split the line to words and get the last one
     words = line.split()
     status = words[-1]

     # if the test failed make it red, if it passed make it green, and
     # skip the punctuation
     if status == "FAILED!" or status == "TIMED-OUT!":
         status = termcap.Red + status[:-1] + termcap.Normal + status[-1]
     elif status == "CHANGED!":
         status = termcap.Yellow + status[:-1] + termcap.Normal + status[-1]
     elif status == "passed.":
         status = termcap.Green + status[:-1] + termcap.Normal + status[-1]
     elif status == "skipped.":
         status = termcap.Cyan + status[:-1] + termcap.Normal + status[-1]

     # put it back in the list and join with space
     words[-1] = status
     line = " ".join(words)

     print '***** ' + line
     return 0

 printAction = env.Action(print_test, strfunction = None)

 # Static vars for update_test:
 # - long-winded message about ignored sources
 ignore_msg = '''
 Note: The following file(s) will not be copied.  New non-standard
       output files must be copied manually once before --update-ref will
       recognize them as outputs.  Otherwise they are assumed to be
       inputs and are ignored.
 '''
 # - reference files always needed
 needed_files = set(['simout', 'simerr', 'stats.txt', 'config.ini'])
 # - source files we always want to ignore
 known_ignores = set(['status', 'outdiff', 'statsdiff'])

 def update_test(target, source, env):
     """Update reference test outputs.

     Target is phony.  First two sources are the ref & new stats.txt file
     files, respectively.  We actually copy everything in the
     respective directories except the status & diff output files.

     """
     dest_dir = str(source[0].get_dir())
     src_dir = str(source[1].get_dir())
     dest_files = set(os.listdir(dest_dir))
     src_files = set(os.listdir(src_dir))
     # Copy all of the required files plus any existing dest files.
     wanted_files = needed_files | dest_files
     missing_files = wanted_files - src_files
     if len(missing_files) > 0:
         print "  WARNING: the following file(s) are missing " \
               "and will not be updated:"
         print "    ", " ,".join(missing_files)
     copy_files = wanted_files - missing_files
     warn_ignored_files = (src_files - copy_files) - known_ignores
     if len(warn_ignored_files) > 0:
         print ignore_msg,
         print "       ", ", ".join(warn_ignored_files)
     for f in copy_files:
         if f in dest_files:
             print "  Replacing file", f
             dest_files.remove(f)
         else:
             print "  Creating new file", f
         copyAction = Copy(os.path.join(dest_dir, f), os.path.join(src_dir, f))
         copyAction.strfunction = None
         env.Execute(copyAction)
     return 0

 def update_test_string(target, source, env):
     return env.subst("Updating ${SOURCES[0].dir} from ${SOURCES[1].dir}",
                      target=target, source=source)

 updateAction = env.Action(update_test, update_test_string)

 def test_builder(env, ref_dir):
     """Define a test."""

     path = list(ref_dir.split('/'))

     # target path (where test output goes) consists of category, mode,
     # name, isa, opsys, and config (skips the 'ref' component)
     assert(path.pop(-4) == 'ref')
     tgt_dir = os.path.join(*path[-6:])

     # local closure for prepending target path to filename
     def tgt(f):
         return os.path.join(tgt_dir, f)

     ref_stats = os.path.join(ref_dir, 'stats.txt')
     new_stats = tgt('stats.txt')
     status_file = tgt('status')

     env.Command([status_file, new_stats],
                 [env.M5Binary, 'run.py', ref_stats],
                 testAction)

     # phony target to echo status
     if GetOption('update_ref'):
         p = env.Command(tgt('_update'),
                         [ref_stats, new_stats, status_file],
                         updateAction)
     else:
         p = env.Command(tgt('_print'), [status_file], printAction)

     env.AlwaysBuild(p)


 # Figure out applicable configs based on build type
 configs = []
 if env['TARGET_ISA'] == 'alpha':
     configs += ['tsunami-simple-atomic',
                 'tsunami-simple-timing',
                 'tsunami-simple-atomic-dual',
                 'tsunami-simple-timing-dual',
                 'twosys-tsunami-simple-atomic',
                 'tsunami-o3', 'tsunami-o3-dual',
                 'tsunami-minor', 'tsunami-minor-dual',
                 'tsunami-switcheroo-full']
 if env['TARGET_ISA'] == 'sparc':
     configs += ['t1000-simple-atomic',
                 't1000-simple-timing']
 if env['TARGET_ISA'] == 'arm':
     configs += ['simple-atomic-dummychecker',
                 'o3-timing-checker',
                 'realview-simple-atomic',
                 'realview-simple-atomic-dual',
                 'realview-simple-timing',
                 'realview-simple-timing-dual',
                 'realview-o3',
                 'realview-o3-checker',
                 'realview-o3-dual',
                 'realview-minor',
                 'realview-minor-dual',
                 'realview-switcheroo-atomic',
                 'realview-switcheroo-timing',
                 'realview-switcheroo-o3',
                 'realview-switcheroo-full',
                 'realview64-simple-atomic',
                 'realview64-simple-atomic-dual',
                 'realview64-simple-timing',
                 'realview64-simple-timing-dual',
                 'realview64-o3',
                 'realview64-o3-checker',
                 'realview64-o3-dual',
                 'realview64-minor',
                 'realview64-minor-dual',
                 'realview64-switcheroo-atomic',
                 'realview64-switcheroo-timing',
                 'realview64-switcheroo-o3',
                 'realview64-switcheroo-full']
 if env['TARGET_ISA'] == 'x86':
     configs += ['pc-simple-atomic',
                 'pc-simple-timing',
                 'pc-o3-timing',
                 'pc-switcheroo-full']

 configs += ['simple-atomic', 'simple-atomic-mp',
             'simple-timing', 'simple-timing-mp',
             'minor-timing', 'minor-timing-mp',
             'o3-timing', 'o3-timing-mp',
             'rubytest', 'memtest', 'memtest-filter',
             'tgen-simple-mem', 'tgen-dram-ctrl']

 if env['PROTOCOL'] != 'None':
     if env['PROTOCOL'] == 'MI_example':
         configs += [c + "-ruby" for c in configs]
     else:
         configs = [c + "-ruby-" + env['PROTOCOL'] for c in configs]

 src = Dir('.').srcdir
 for config in configs:
     dirs = src.glob('*/*/*/ref/%s/*/%s' % (env['TARGET_ISA'], config))
     for d in dirs:
         d = str(d)
         if not os.path.exists(os.path.join(d, 'skip')):
             test_builder(env, d)
	# -- mode:python --

	# Copyright (c) 2004-2006 The Regents of The University of Michigan
	# 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 the copyright holders 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.
	#
	# Authors: Steve Reinhardt
	# Kevin Lim

	import os, signal
	import sys, time
	import glob
	from SCons.Script.SConscript import SConsEnvironment

	Import('env')

	env['DIFFOUT'] = File('diff-out')

	# get the termcap from the environment
	termcap = env['TERMCAP']

	# Dict that accumulates lists of tests by category (quick, medium, long)
	env.Tests = {}

	def contents(node):
	return file(str(node)).read()

	# functions to parse return value from scons Execute()... not the same
	# as wait() etc., so python built-in os funcs don't work.
	def signaled(status):
	return (status & 0x80) != 0;

	def signum(status):
	return (status & 0x7f);

	# List of signals that indicate that we should retry the test rather
	# than consider it failed.
	retry_signals = (signal.SIGTERM, signal.SIGKILL, signal.SIGINT,
	signal.SIGQUIT, signal.SIGHUP)

	# regular expressions of lines to ignore when diffing outputs
	output_ignore_regexes = (
	'^command line:', # for stdout file
	'^gem5 compiled ', # for stderr file
	'^gem5 started ', # for stderr file
	'^gem5 executing on ', # for stderr file
	'^Simulation complete at', # for stderr file
	'^Listening for', # for stderr file
	'listening for remote gdb', # for stderr file
	)

	output_ignore_args = ' '.join(["-I '"+s+"'" for s in output_ignore_regexes])

	output_ignore_args += ' --exclude=stats.txt --exclude=outdiff'

	def run_test(target, source, env):
	"""Check output from running test.

	Targets are as follows:
	target[0] : status

	Sources are:
	source[0] : gem5 binary
	source[1] : tests/run.py script
	source[2] : reference stats file

	"""
	# make sure target files are all gone
	for t in target:
	if os.path.exists(t.abspath):
	env.Execute(Delete(t.abspath))

	tgt_dir = os.path.dirname(str(target[0]))

	# Base command for running test. We mess around with indirectly
	# referring to files via SOURCES and TARGETS so that scons can mess
	# with paths all it wants to and we still get the right files.
	cmd = '${SOURCES[0]} -d %s -re ${SOURCES[1]} %s' % (tgt_dir, tgt_dir)

	# Prefix test run with batch job submission command if appropriate.
	# Batch command also supports timeout arg (in seconds, not minutes).
	timeout = 15 * 60 # used to be a param, probably should be again
	if env['BATCH']:
	cmd = '%s -t %d %s' % (env['BATCH_CMD'], timeout, cmd)
	# The slowest regression (bzip2) requires ~2.8 hours;
	# 4 hours was chosen to be conservative.
	elif env['TIMEOUT']:
	cmd = 'timeout 4h %s' % cmd

	# Create a default value for the status string, changed as needed
	# based on the status.
	status_str = "passed."

	pre_exec_time = time.time()
	status = env.Execute(env.subst(cmd, target=target, source=source))
	if status == 0:
	# gem5 terminated normally.
	# Run diff on output & ref directories to find differences.
	# Exclude the stats file since we will use diff-out on that.

	# NFS file systems can be annoying and not have updated yet
	# wait until we see the file modified
	statsdiff = os.path.join(tgt_dir, 'statsdiff')
	m_time = 0
	nap = 0
	while m_time < pre_exec_time and nap < 10:
	try:
	m_time = os.stat(statsdiff).st_mtime
	except OSError:
	pass
	time.sleep(1)
	nap += 1

	outdiff = os.path.join(tgt_dir, 'outdiff')
	# tack 'true' on the end so scons doesn't report diff's
	# non-zero exit code as a build error
	diffcmd = 'diff -ubrs %s ${SOURCES[2].dir} %s > %s; true' \
	% (output_ignore_args, tgt_dir, outdiff)
	env.Execute(env.subst(diffcmd, target=target, source=source))
	print "===== Output differences ====="
	print contents(outdiff)
	# Run diff-out on stats.txt file
	diffcmd = '$DIFFOUT ${SOURCES[2]} %s > %s' \
	% (os.path.join(tgt_dir, 'stats.txt'), statsdiff)
	diffcmd = env.subst(diffcmd, target=target, source=source)
	diff_status = env.Execute(diffcmd, strfunction=None)
	# If there is a difference, change the status string to say so
	if diff_status != 0:
	status_str = "CHANGED!"
	print "===== Statistics differences ====="
	print contents(statsdiff)

	else: # gem5 exit status != 0
	# Consider it a failed test unless the exit status is 2
	status_str = "FAILED!"
	# gem5 did not terminate properly, so no need to check the output
	if env['TIMEOUT'] and status == 124:
	status_str = "TIMED-OUT!"
	elif signaled(status):
	print 'gem5 terminated with signal', signum(status)
	if signum(status) in retry_signals:
	# Consider the test incomplete; don't create a 'status' output.
	# Hand the return status to scons and let scons decide what
	# to do about it (typically terminate unless run with -k).
	return status
	elif status == 2:
	# The test was skipped, change the status string to say so
	status_str = "skipped."
	else:
	print 'gem5 exited with non-zero status', status
	# complete but failed execution (call to exit() with non-zero
	# status, SIGABORT due to assertion failure, etc.)... fall through
	# and generate FAILED status as if output comparison had failed

	# Generate status file contents based on exit status of gem5 and diff-out
	f = file(str(target[0]), 'w')
	print >>f, tgt_dir, status_str
	f.close()
	# done
	return 0

	def run_test_string(target, source, env):
	return env.subst("Running test in ${TARGETS[0].dir}.",
	target=target, source=source)

	testAction = env.Action(run_test, run_test_string)

	def print_test(target, source, env):
	# print the status with colours to make it easier to see what
	# passed and what failed
	line = contents(source[0])

	# split the line to words and get the last one
	words = line.split()
	status = words[-1]

	# if the test failed make it red, if it passed make it green, and
	# skip the punctuation
	if status == "FAILED!" or status == "TIMED-OUT!":
	status = termcap.Red + status[:-1] + termcap.Normal + status[-1]
	elif status == "CHANGED!":
	status = termcap.Yellow + status[:-1] + termcap.Normal + status[-1]
	elif status == "passed.":
	status = termcap.Green + status[:-1] + termcap.Normal + status[-1]
	elif status == "skipped.":
	status = termcap.Cyan + status[:-1] + termcap.Normal + status[-1]

	# put it back in the list and join with space
	words[-1] = status
	line = " ".join(words)

	print '***** ' + line
	return 0

	printAction = env.Action(print_test, strfunction = None)

	# Static vars for update_test:
	# - long-winded message about ignored sources
	ignore_msg = '''
	Note: The following file(s) will not be copied. New non-standard
	output files must be copied manually once before --update-ref will
	recognize them as outputs. Otherwise they are assumed to be
	inputs and are ignored.
	'''
	# - reference files always needed
	needed_files = set(['simout', 'simerr', 'stats.txt', 'config.ini'])
	# - source files we always want to ignore
	known_ignores = set(['status', 'outdiff', 'statsdiff'])

	def update_test(target, source, env):
	"""Update reference test outputs.

	Target is phony. First two sources are the ref & new stats.txt file
	files, respectively. We actually copy everything in the
	respective directories except the status & diff output files.

	"""
	dest_dir = str(source[0].get_dir())
	src_dir = str(source[1].get_dir())
	dest_files = set(os.listdir(dest_dir))
	src_files = set(os.listdir(src_dir))
	# Copy all of the required files plus any existing dest files.
	wanted_files = needed_files \| dest_files
	missing_files = wanted_files - src_files
	if len(missing_files) > 0:
	print " WARNING: the following file(s) are missing " \
	"and will not be updated:"
	print " ", " ,".join(missing_files)
	copy_files = wanted_files - missing_files
	warn_ignored_files = (src_files - copy_files) - known_ignores
	if len(warn_ignored_files) > 0:
	print ignore_msg,
	print " ", ", ".join(warn_ignored_files)
	for f in copy_files:
	if f in dest_files:
	print " Replacing file", f
	dest_files.remove(f)
	else:
	print " Creating new file", f
	copyAction = Copy(os.path.join(dest_dir, f), os.path.join(src_dir, f))
	copyAction.strfunction = None
	env.Execute(copyAction)
	return 0

	def update_test_string(target, source, env):
	return env.subst("Updating ${SOURCES[0].dir} from ${SOURCES[1].dir}",
	target=target, source=source)

	updateAction = env.Action(update_test, update_test_string)

	def test_builder(env, ref_dir):
	"""Define a test."""

	path = list(ref_dir.split('/'))

	# target path (where test output goes) consists of category, mode,
	# name, isa, opsys, and config (skips the 'ref' component)
	assert(path.pop(-4) == 'ref')
	tgt_dir = os.path.join(*path[-6:])

	# local closure for prepending target path to filename
	def tgt(f):
	return os.path.join(tgt_dir, f)

	ref_stats = os.path.join(ref_dir, 'stats.txt')
	new_stats = tgt('stats.txt')
	status_file = tgt('status')

	env.Command([status_file, new_stats],
	[env.M5Binary, 'run.py', ref_stats],
	testAction)

	# phony target to echo status
	if GetOption('update_ref'):
	p = env.Command(tgt('_update'),
	[ref_stats, new_stats, status_file],
	updateAction)
	else:
	p = env.Command(tgt('_print'), [status_file], printAction)

	env.AlwaysBuild(p)


	# Figure out applicable configs based on build type
	configs = []
	if env['TARGET_ISA'] == 'alpha':
	configs += ['tsunami-simple-atomic',
	'tsunami-simple-timing',
	'tsunami-simple-atomic-dual',
	'tsunami-simple-timing-dual',
	'twosys-tsunami-simple-atomic',
	'tsunami-o3', 'tsunami-o3-dual',
	'tsunami-minor', 'tsunami-minor-dual',
	'tsunami-switcheroo-full']
	if env['TARGET_ISA'] == 'sparc':
	configs += ['t1000-simple-atomic',
	't1000-simple-timing']
	if env['TARGET_ISA'] == 'arm':
	configs += ['simple-atomic-dummychecker',
	'o3-timing-checker',
	'realview-simple-atomic',
	'realview-simple-atomic-dual',
	'realview-simple-timing',
	'realview-simple-timing-dual',
	'realview-o3',
	'realview-o3-checker',
	'realview-o3-dual',
	'realview-minor',
	'realview-minor-dual',
	'realview-switcheroo-atomic',
	'realview-switcheroo-timing',
	'realview-switcheroo-o3',
	'realview-switcheroo-full',
	'realview64-simple-atomic',
	'realview64-simple-atomic-dual',
	'realview64-simple-timing',
	'realview64-simple-timing-dual',
	'realview64-o3',
	'realview64-o3-checker',
	'realview64-o3-dual',
	'realview64-minor',
	'realview64-minor-dual',
	'realview64-switcheroo-atomic',
	'realview64-switcheroo-timing',
	'realview64-switcheroo-o3',
	'realview64-switcheroo-full']
	if env['TARGET_ISA'] == 'x86':
	configs += ['pc-simple-atomic',
	'pc-simple-timing',
	'pc-o3-timing',
	'pc-switcheroo-full']

	configs += ['simple-atomic', 'simple-atomic-mp',
	'simple-timing', 'simple-timing-mp',
	'minor-timing', 'minor-timing-mp',
	'o3-timing', 'o3-timing-mp',
	'rubytest', 'memtest', 'memtest-filter',
	'tgen-simple-mem', 'tgen-dram-ctrl']

	if env['PROTOCOL'] != 'None':
	if env['PROTOCOL'] == 'MI_example':
	configs += [c + "-ruby" for c in configs]
	else:
	configs = [c + "-ruby-" + env['PROTOCOL'] for c in configs]

	src = Dir('.').srcdir
	for config in configs:
	dirs = src.glob('///ref/%s//%s' % (env['TARGET_ISA'], config))
	for d in dirs:
	d = str(d)
	if not os.path.exists(os.path.join(d, 'skip')):
	test_builder(env, d)