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#
# Copyright OpenEmbedded Contributors
#
# SPDX-License-Identifier: MIT
#
import os
from subprocess import Popen, PIPE
import threading
import time
from oeqa.selftest.case import OESelftestTestCase
from oeqa.utils.commands import bitbake, get_bb_var, get_bb_vars, runqemu , runCmd
from oeqa.core.exception import OEQATimeoutError
#The test runs gdbserver on qemu and connects the gdb client from host over TCP.
#
#It builds a cross gdb on the host and compiles the program to be debugged on the target,
#launches the gdbserver and tries to connect cross gdb to it.
class GdbTest(OESelftestTestCase):
def run_gdb(self, native_sysroot=None, **options):
# Add path to cross gdb to environment.
extra_paths = "%s/usr/bin/%s" % (self.recipe_sysroot_native, self.target_sys)
nenv = dict(options.get('env', os.environ))
nenv['PATH'] = extra_paths + ':' + nenv.get('PATH', '')
options['env'] = nenv
for count in range(5):
# Let the gdb server start before by putting client thread to sleep.
# Still, if gdb client happens to start before gdbserver, if will
# return "gdb connection timed out". In that case try
# connecting again
time.sleep(1)
cmd = "%s-gdb -ex 'set sysroot %s' -ex \"target remote %s:%s\" -ex continue -ex quit %s" \
%(self.target_sys, self.recipe_sysroot_native, self.qemu_ip, self.gdbserver_port, self.binary)
r = runCmd(cmd, native_sysroot=self.recipe_sysroot_native, **options)
if "Connection timed out" not in r.output:
break
if count == 4:
self.assertTrue(False, "gdb unable to connect to gdbserver")
def run_gdb_client(self):
self.run_gdb(native_sysroot=self.recipe_sysroot_native, ignore_status=False)
def test_gdb_server(self):
self.target_dst = "/tmp/"
self.source = "test.c"
self.binary = "test"
self.target_source = self.target_dst + self.source
self.target_binary = self.target_dst + self.binary
self.gdbserver_port = 2001
try:
# These aren't the actual IP addresses but testexport class needs something defined
features = 'TEST_SERVER_IP = "192.168.7.1"\n'
features += 'TEST_TARGET_IP = "192.168.7.2"\n'
features += 'EXTRA_IMAGE_FEATURES += "ssh-server-openssh"\n'
features += 'CORE_IMAGE_EXTRA_INSTALL += "gdbserver packagegroup-core-buildessential"\n'
self.write_config(features)
self.target_arch = get_bb_var('TARGET_ARCH')
self.target_sys = get_bb_var('TARGET_SYS')
recipe = "gdb-cross-%s" %self.target_arch
gdb_cross_bitbake_command = "%s -c addto_recipe_sysroot" %recipe
bitbake(gdb_cross_bitbake_command)
self.recipe_sysroot_native = get_bb_var('RECIPE_SYSROOT_NATIVE', recipe)
bitbake('core-image-minimal')
self.cross_gdb_name = "%s-gdb" %self.target_sys
# wrap the execution with a qemu instance
with runqemu("core-image-minimal", runqemuparams = "nographic") as qemu:
status, target_gcc = qemu.run_serial("which gcc")
self.assertNotEqual(target_gcc, None, 'gcc not found on the target')
self.qemu_ip = qemu.ip
# self.tc.files_dir = meta/lib/oeqa/files
src = os.path.join(self.tc.files_dir, 'test.c')
self.logger.debug("src : %s qemu.ip : %s self.target_dst : %s" % (src , self.qemu_ip , self.target_dst))
cmd = "scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR %s root@%s:%s" % (src, qemu.ip, self.target_dst)
result = runCmd(cmd)
cmd = "cat %s" %(self.target_source)
status, output = qemu.run_serial(cmd)
self.assertIn("1234", output, "Source file copied to target is different that what is expected")
cmd = "%s %s -o %s -lm -g" % (target_gcc, self.target_source, self.target_binary)
status, output = qemu.run_serial(cmd)
cmd = "ls %s" %self.target_binary
status, output = qemu.run_serial(cmd)
self.assertNotIn("No such file or directory", output, "Test file compilation failed on target")
status, output = qemu.run_serial(self.target_binary)
self.assertIn("1234", output, "Test binary is different than what is expected")
cmd = "scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR root@%s:%s %s" % (qemu.ip, self.target_binary, os.getcwd())
result = runCmd(cmd)
cmd = "strip -s --strip-debug %s" %self.target_binary
status, output = qemu.run_serial(cmd)
gdb_client_thread = threading.Thread(target=self.run_gdb_client)
gdb_client_thread.start()
cmd = "gdbserver localhost:%s %s" %(self.gdbserver_port, self.target_binary)
status, output = qemu.run_serial(cmd)
self.logger.debug("gdbserver status : %s output : %s" % (status, output))
gdb_client_thread.join()
self.assertIn("1234", output, "Expected string (1234) not present in test output")
except OEQATimeoutError:
self.fail("gdbserver test timeout error")
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