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#!/usr/bin/env python2
"""Run full bisection test."""
from __future__ import print_function
import argparse
import os
import sys
from cros_utils import command_executer
TEST_DIR = 'full_bisect_test'
DEFAULT_BISECT_DIR = '/tmp/sysroot_bisect'
def populate_good_files(top_dir, ce, bisect_dir=DEFAULT_BISECT_DIR):
# 'make clean'
work_dir = os.path.join(top_dir, TEST_DIR, 'work')
cmd = 'rm -f %s/*.o' % work_dir
status = ce.RunCommand(cmd)
if status != 0:
print('Error trying to clean out work directory: %s' % cmd)
return status
# set up the 'good' source files
script = os.path.join(top_dir, TEST_DIR, 'make_sources_good.sh')
status = ce.RunCommand(script)
if status != 0:
print('Error setting up "good" source files: %s' % script)
return status
export_bisect = 'export BISECT_DIR=%s; ' % bisect_dir
# build the good source files
script_path = os.path.join(top_dir, TEST_DIR)
if os.path.exists('/usr/bin/x86_64-cros-linux-gnu-gcc'):
build_script = 'chromeos_build.sh'
else:
build_script = 'build.sh'
cmd = ('%s export BISECT_STAGE=POPULATE_GOOD; pushd %s; ./%s; popd' %
(export_bisect, script_path, build_script))
status = ce.RunCommand(cmd)
return status
def populate_bad_files(top_dir, ce, bisect_dir=DEFAULT_BISECT_DIR):
# 'make clean'
work_dir = os.path.join(top_dir, TEST_DIR, 'work')
cmd = 'rm -f %s/*.o' % work_dir
status = ce.RunCommand(cmd)
if status != 0:
print('Error trying to clean out work directory: %s' % cmd)
return status
# set up the 'bad' source files
script = os.path.join(top_dir, TEST_DIR, 'make_sources_bad.sh')
status = ce.RunCommand(script)
if status != 0:
print('Error setting up "bad" source files: %s' % script)
return status
export_bisect = 'export BISECT_DIR=%s; ' % bisect_dir
# build the bad source files
script_path = os.path.join(top_dir, TEST_DIR)
if os.path.exists('/usr/bin/x86_64-cros-linux-gnu-gcc'):
build_script = 'chromeos_build.sh'
else:
build_script = 'build.sh'
cmd = ('%s export BISECT_STAGE=POPULATE_BAD; pushd %s; ./%s ; popd' %
(export_bisect, script_path, build_script))
status = ce.RunCommand(cmd)
return status
def run_main_bisection_test(top_dir, ce):
test_script = os.path.join(top_dir, TEST_DIR, 'main-bisect-test.sh')
status = ce.RunCommand(test_script)
return status
def verify_compiler_and_wrapper():
# We don't need to do any special setup if running inside a ChromeOS
# chroot.
if os.path.exists('/usr/bin/x86_64-cros-linux-gnu-gcc'):
return
message = """
*** IMPORTANT --- READ THIS CAREFULLY!! ***
This test uses the command 'gcc' to compile the good/bad versions of the
source program. BEFORE you can run this script you must make sure that
your compiler wrapper is in the right place, with the right name, so that
a call to 'gcc' will go through your compiler wrapper and "do the right
thing".
Is your compiler wrapper properly set up? [Y/n]
"""
print(message)
inp = sys.stdin.readline()
inp = inp.strip()
inp = inp.lower()
return not inp or inp == 'y' or inp == 'yes'
def Main(argv):
parser = argparse.ArgumentParser()
parser.add_argument(
'--dir',
dest='directory',
help='Bisection work tree, where good & bad object '
'files go. Default is /tmp/sysroot_bisect')
options = parser.parse_args(argv)
# Make sure the compiler wrapper & soft links are properly set up.
wrapper_is_setup = verify_compiler_and_wrapper()
if not wrapper_is_setup:
print('Exiting now. Please re-run after you have set up the compiler '
'wrapper.')
return 0
# Make sure we're in the correct directory for running this test.
cwd = os.getcwd()
if not os.path.exists(os.path.join(cwd, 'full_bisect_test')):
print('Error: Wrong directory. This script must be run from the top level'
' of the binary_search_tool tree (under toolchain_utils).')
return 1
ce = command_executer.GetCommandExecuter()
bisect_dir = options.directory
if not bisect_dir:
bisect_dir = DEFAULT_BISECT_DIR
# Make sure BISECT_DIR is clean
if os.path.exists(bisect_dir):
cmd = 'rm -Rf %s/*' % bisect_dir
retv = ce.RunCommand(cmd)
if retv != 0:
return retv
retv = populate_good_files(cwd, ce, bisect_dir)
if retv != 0:
return retv
retv = populate_bad_files(cwd, ce, bisect_dir)
if retv != 0:
return retv
# Set up good/bad work soft links
cmd = ('rm -f %s/%s/good-objects; ln -s %s/good %s/%s/good-objects' %
(cwd, TEST_DIR, bisect_dir, cwd, TEST_DIR))
status = ce.RunCommand(cmd)
if status != 0:
print('Error executing: %s; exiting now.' % cmd)
return status
cmd = ('rm -f %s/%s/bad-objects; ln -s %s/bad %s/%s/bad-objects' %
(cwd, TEST_DIR, bisect_dir, cwd, TEST_DIR))
status = ce.RunCommand(cmd)
if status != 0:
print('Error executing: %s; exiting now.' % cmd)
return status
retv = run_main_bisection_test(cwd, ce)
return retv
if __name__ == '__main__':
retval = Main(sys.argv[1:])
sys.exit(retval)
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