From b9a57cad4db4ca62af3a49716bf7c56e22f56b71 Mon Sep 17 00:00:00 2001 From: Yogesh Tyagi Date: Mon, 8 Aug 2022 12:21:40 +0800 Subject: gdbserver : add selftest 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. [YOCTO #13996] (From OE-Core rev: 37164f7e39eea3a1e594d8306d2569868438ba93) Signed-off-by: Yogesh Tyagi Signed-off-by: Alexandre Belloni Signed-off-by: Richard Purdie --- meta/lib/oeqa/selftest/cases/gdbserver.py | 122 ++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 meta/lib/oeqa/selftest/cases/gdbserver.py (limited to 'meta/lib/oeqa') diff --git a/meta/lib/oeqa/selftest/cases/gdbserver.py b/meta/lib/oeqa/selftest/cases/gdbserver.py new file mode 100644 index 0000000000..2c733a1342 --- /dev/null +++ b/meta/lib/oeqa/selftest/cases/gdbserver.py @@ -0,0 +1,122 @@ +# 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") + -- cgit v1.2.3-54-g00ecf