"""
Base class for gdb-remote test cases.
"""
import errno
import os
import os.path
import random
import re
import select
import socket
import subprocess
import sys
import tempfile
import time
from lldbsuite.test import configuration
from lldbsuite.test.lldbtest import *
from lldbsuite.support import seven
from lldbgdbserverutils import *
import logging
class _ConnectionRefused(IOError):
pass
class GdbRemoteTestCaseFactory(type):
def __new__(cls, name, bases, attrs):
newattrs = {}
for attrname, attrvalue in attrs.items():
if not attrname.startswith("test"):
newattrs[attrname] = attrvalue
continue
# If any debug server categories were explicitly tagged, assume
# that list to be authoritative. If none were specified, try
# all of them.
all_categories = set(["debugserver", "llgs"])
categories = set(getattr(attrvalue, "categories", [])) & all_categories
if not categories:
categories = all_categories
for cat in categories:
@decorators.add_test_categories([cat])
@wraps(attrvalue)
def test_method(self, attrvalue=attrvalue):
return attrvalue(self)
method_name = attrname + "_" + cat
test_method.__name__ = method_name
test_method.debug_server = cat
newattrs[method_name] = test_method
return super(GdbRemoteTestCaseFactory, cls).__new__(cls, name, bases, newattrs)
class GdbRemoteTestCaseBase(Base, metaclass=GdbRemoteTestCaseFactory):
# Default time out in seconds. The timeout is increased tenfold under Asan.
DEFAULT_TIMEOUT = 20 * (10 if ("ASAN_OPTIONS" in os.environ) else 1)
# Default sleep time in seconds. The sleep time is doubled under Asan.
DEFAULT_SLEEP = 5 * (2 if ("ASAN_OPTIONS" in os.environ) else 1)
_GDBREMOTE_KILL_PACKET = b"$k#6b"
# Start the inferior separately, attach to the inferior on the stub
# command line.
_STARTUP_ATTACH = "attach"
# Start the inferior separately, start the stub without attaching, allow
# the test to attach to the inferior however it wants (e.g. $vAttach;pid).
_STARTUP_ATTACH_MANUALLY = "attach_manually"
# Start the stub, and launch the inferior with an $A packet via the
# initial packet stream.
_STARTUP_LAUNCH = "launch"
# GDB Signal numbers that are not target-specific used for common
# exceptions
TARGET_EXC_BAD_ACCESS = 0x91
TARGET_EXC_BAD_INSTRUCTION = 0x92
TARGET_EXC_ARITHMETIC = 0x93
TARGET_EXC_EMULATION = 0x94
TARGET_EXC_SOFTWARE = 0x95
TARGET_EXC_BREAKPOINT = 0x96
_verbose_log_handler = None
_log_formatter = logging.Formatter(fmt="%(asctime)-15s %(levelname)-8s %(message)s")
def setUpBaseLogging(self):
self.logger = logging.getLogger(__name__)
if len(self.logger.handlers) > 0:
return # We have set up this handler already
self.logger.propagate = False
self.logger.setLevel(logging.DEBUG)
# log all warnings to stderr
handler = logging.StreamHandler()
handler.setLevel(logging.WARNING)
handler.setFormatter(self._log_formatter)
self.logger.addHandler(handler)
def isVerboseLoggingRequested(self):
# We will report our detailed logs if the user requested that the "gdb-remote" channel is
# logged.
return any(("gdb-remote" in channel) for channel in lldbtest_config.channels)
def getDebugServer(self):
method = getattr(self, self.testMethodName)
return getattr(method, "debug_server", None)
def setUp(self):
super(GdbRemoteTestCaseBase, self).setUp()
self.setUpBaseLogging()
self.debug_monitor_extra_args = []
if self.isVerboseLoggingRequested():
# If requested, full logs go to a log file
self._verbose_log_handler = logging.FileHandler(
self.getLogBasenameForCurrentTest() + "-host.log"
)
self._verbose_log_handler.setFormatter(self._log_formatter)
self._verbose_log_handler.setLevel(logging.DEBUG)
self.logger.addHandler(self._verbose_log_handler)
self.test_sequence = GdbRemoteTestSequence(self.logger)
self.set_inferior_startup_launch()
self.port = self.get_next_port()
self.stub_sends_two_stop_notifications_on_kill = False
if configuration.lldb_platform_url:
if configuration.lldb_platform_url.startswith("unix-"):
url_pattern = r"(.+)://\[?(.+?)\]?/.*"
else:
url_pattern = r"(.+)://(.+):\d+"
scheme, host = re.match(
url_pattern, configuration.lldb_platform_url
).groups()
if (
configuration.lldb_platform_name == "remote-android"
and host != "localhost"
):
self.stub_device = host
self.stub_hostname = "localhost"
else:
self.stub_device = None
self.stub_hostname = host
else:
self.stub_hostname = "localhost"
debug_server = self.getDebugServer()
if debug_server == "debugserver":
self._init_debugserver_test()
else:
self._init_llgs_test()
def tearDown(self):
self.logger.removeHandler(self._verbose_log_handler)
self._verbose_log_handler = None
TestBase.tearDown(self)
def getLocalServerLogFile(self):
return self.getLogBasenameForCurrentTest() + "-server.log"
def setUpServerLogging(self, is_llgs):
if len(lldbtest_config.channels) == 0:
return # No logging requested
if lldb.remote_platform:
log_file = lldbutil.join_remote_paths(
lldb.remote_platform.GetWorkingDirectory(), "server.log"
)
else:
log_file = self.getLocalServerLogFile()
if is_llgs:
self.debug_monitor_extra_args.append("--log-file=" + log_file)
self.debug_monitor_extra_args.append(
"--log-channels={}".format(":".join(lldbtest_config.channels))
)
else:
self.debug_monitor_extra_args = [
"--log-file=" + log_file,
"--log-flags=0x800000",
]
def get_next_port(self):
return 12000 + random.randint(0, 3999)
def reset_test_sequence(self):
self.test_sequence = GdbRemoteTestSequence(self.logger)
def _init_llgs_test(self):
reverse_connect = True
if lldb.remote_platform:
# Reverse connections may be tricky due to firewalls/NATs.
reverse_connect = False
# FIXME: This is extremely linux-oriented
# Grab the ppid from /proc/[shell pid]/stat
err, retcode, shell_stat = self.run_platform_command("cat /proc/$$/stat")
self.assertTrue(
err.Success() and retcode == 0,
"Failed to read file /proc/$$/stat: %s, retcode: %d"
% (err.GetCString(), retcode),
)
# [pid] ([executable]) [state] [*ppid*]
pid = re.match(r"^\d+ \(.+\) . (\d+)", shell_stat).group(1)
err, retcode, ls_output = self.run_platform_command(
"ls -l /proc/%s/exe" % pid
)
self.assertTrue(
err.Success() and retcode == 0,
"Failed to read file /proc/%s/exe: %s, retcode: %d"
% (pid, err.GetCString(), retcode),
)
exe = ls_output.split()[-1]
# If the binary has been deleted, the link name has " (deleted)" appended.
# Remove if it's there.
self.debug_monitor_exe = re.sub(r" \(deleted\)$", "", exe)
else:
self.debug_monitor_exe = get_lldb_server_exe()
self.debug_monitor_extra_args = ["gdbserver"]
self.setUpServerLogging(is_llgs=True)
self.reverse_connect = reverse_connect
def _init_debugserver_test(self):
self.debug_monitor_exe = get_debugserver_exe()
self.setUpServerLogging(is_llgs=False)
self.reverse_connect = True
# The debugserver stub has a race on handling the 'k' command, so it sends an X09 right away, then sends the real X notification
# when the process truly dies.
self.stub_sends_two_stop_notifications_on_kill = True
def forward_adb_port(self, source, target, direction, device):
adb = ["adb"] + (["-s", device] if device else []) + [direction]
def remove_port_forward():
subprocess.call(adb + ["--remove", "tcp:%d" % source])
subprocess.call(adb + ["tcp:%d" % source, "tcp:%d" % target])
self.addTearDownHook(remove_port_forward)
def _verify_socket(self, sock):
# Normally, when the remote stub is not ready, we will get ECONNREFUSED during the
# connect() attempt. However, due to the way how ADB forwarding works, on android targets
# the connect() will always be successful, but the connection will be immediately dropped
# if ADB could not connect on the remote side. This function tries to detect this
# situation, and report it as "connection refused" so that the upper layers attempt the
# connection again.
triple = self.dbg.GetSelectedPlatform().GetTriple()
if not re.match(".*-.*-.*-android", triple):
return # Not android.
can_read, _, _ = select.select([sock], [], [], 0.1)
if sock not in can_read:
return # Data is not available, but the connection is alive.
if len(sock.recv(1, socket.MSG_PEEK)) == 0:
raise _ConnectionRefused() # Got EOF, connection dropped.
def create_socket(self):
try:
sock = socket.socket(family=socket.AF_INET)
except OSError as e:
if e.errno != errno.EAFNOSUPPORT:
raise
sock = socket.socket(family=socket.AF_INET6)
logger = self.logger
triple = self.dbg.GetSelectedPlatform().GetTriple()
if re.match(".*-.*-.*-android", triple):
self.forward_adb_port(self.port, self.port, "forward", self.stub_device)
logger.info(
"Connecting to debug monitor on %s:%d", self.stub_hostname, self.port
)
connect_info = (self.stub_hostname, self.port)
try:
sock.connect(connect_info)
except socket.error as serr:
if serr.errno == errno.ECONNREFUSED:
raise _ConnectionRefused()
raise serr
def shutdown_socket():
if sock:
try:
# send the kill packet so lldb-server shuts down gracefully
sock.sendall(GdbRemoteTestCaseBase._GDBREMOTE_KILL_PACKET)
except:
logger.warning(
"failed to send kill packet to debug monitor: {}; ignoring".format(
sys.exc_info()[0]
)
)
try:
sock.close()
except:
logger.warning(
"failed to close socket to debug monitor: {}; ignoring".format(
sys.exc_info()[0]
)
)
self.addTearDownHook(shutdown_socket)
self._verify_socket(sock)
return sock
def set_inferior_startup_launch(self):
self._inferior_startup = self._STARTUP_LAUNCH
def set_inferior_startup_attach(self):
self._inferior_startup = self._STARTUP_ATTACH
def set_inferior_startup_attach_manually(self):
self._inferior_startup = self._STARTUP_ATTACH_MANUALLY
def get_debug_monitor_command_line_args(self, attach_pid=None):
commandline_args = self.debug_monitor_extra_args
if attach_pid:
commandline_args += ["--attach=%d" % attach_pid]
if self.reverse_connect:
commandline_args += ["--reverse-connect", self.connect_address]
else:
if lldb.remote_platform:
commandline_args += ["*:{}".format(self.port)]
else:
commandline_args += ["localhost:{}".format(self.port)]
return commandline_args
def get_target_byte_order(self):
inferior_exe_path = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(inferior_exe_path)
return target.GetByteOrder()
def launch_debug_monitor(self, attach_pid=None, logfile=None):
if self.reverse_connect:
family, type, proto, _, addr = socket.getaddrinfo(
"localhost", 0, proto=socket.IPPROTO_TCP
)[0]
sock = socket.socket(family, type, proto)
sock.settimeout(self.DEFAULT_TIMEOUT)
sock.bind(addr)
sock.listen(1)
addr = sock.getsockname()
self.connect_address = "[{}]:{}".format(*addr)
# Create the command line.
commandline_args = self.get_debug_monitor_command_line_args(
attach_pid=attach_pid
)
# Start the server.
server = self.spawnSubprocess(
self.debug_monitor_exe, commandline_args, install_remote=False
)
self.assertIsNotNone(server)
if self.reverse_connect:
self.sock = sock.accept()[0]
self.sock.settimeout(self.DEFAULT_TIMEOUT)
return server
def connect_to_debug_monitor(self, attach_pid=None):
if self.reverse_connect:
# Create the stub.
server = self.launch_debug_monitor(attach_pid=attach_pid)
self.assertIsNotNone(server)
# Schedule debug monitor to be shut down during teardown.
logger = self.logger
self._server = Server(self.sock, server)
return server
# We're using a random port algorithm to try not to collide with other ports,
# and retry a max # times.
attempts = 0
MAX_ATTEMPTS = 20
while attempts < MAX_ATTEMPTS:
server = self.launch_debug_monitor(attach_pid=attach_pid)
# Schedule debug monitor to be shut down during teardown.
logger = self.logger
connect_attemps = 0
MAX_CONNECT_ATTEMPTS = 10
while connect_attemps < MAX_CONNECT_ATTEMPTS:
# Create a socket to talk to the server
try:
logger.info("Connect attempt %d", connect_attemps + 1)
self.sock = self.create_socket()
self._server = Server(self.sock, server)
return server
except _ConnectionRefused as serr:
# Ignore, and try again.
pass
time.sleep(0.5)
connect_attemps += 1
# We should close the server here to be safe.
server.terminate()
# Increment attempts.
print(
"connect to debug monitor on port %d failed, attempt #%d of %d"
% (self.port, attempts + 1, MAX_ATTEMPTS)
)
attempts += 1
# And wait a random length of time before next attempt, to avoid
# collisions.
time.sleep(random.randint(1, 5))
# Now grab a new port number.
self.port = self.get_next_port()
raise Exception(
"failed to create a socket to the launched debug monitor after %d tries"
% attempts
)
def launch_process_for_attach(
self, inferior_args=None, sleep_seconds=3, exe_path=None
):
# We're going to start a child process that the debug monitor stub can later attach to.
# This process needs to be started so that it just hangs around for a while. We'll
# have it sleep.
if not exe_path:
exe_path = self.getBuildArtifact("a.out")
args = []
if inferior_args:
args.extend(inferior_args)
if sleep_seconds:
args.append("sleep:%d" % sleep_seconds)
return self.spawnSubprocess(exe_path, args)
def prep_debug_monitor_and_inferior(
self,
inferior_args=None,
inferior_sleep_seconds=3,
inferior_exe_path=None,
inferior_env=None,
):
"""Prep the debug monitor, the inferior, and the expected packet stream.
Handle the separate cases of using the debug monitor in attach-to-inferior mode
and in launch-inferior mode.
For attach-to-inferior mode, the inferior process is first started, then
the debug monitor is started in attach to pid mode (using --attach on the
stub command line), and the no-ack-mode setup is appended to the packet
stream. The packet stream is not yet executed, ready to have more expected
packet entries added to it.
For launch-inferior mode, the stub is first started, then no ack mode is
setup on the expected packet stream, then the verified launch packets are added
to the expected socket stream. The packet stream is not yet executed, ready
to have more expected packet entries added to it.
The return value is:
{inferior:<inferior>, server:<server>}
"""
inferior = None
attach_pid = None
if (
self._inferior_startup == self._STARTUP_ATTACH
or self._inferior_startup == self._STARTUP_ATTACH_MANUALLY
):
# Launch the process that we'll use as the inferior.
inferior = self.launch_process_for_attach(
inferior_args=inferior_args,
sleep_seconds=inferior_sleep_seconds,
exe_path=inferior_exe_path,
)
self.assertIsNotNone(inferior)
self.assertTrue(inferior.pid > 0)
if self._inferior_startup == self._STARTUP_ATTACH:
# In this case, we want the stub to attach via the command
# line, so set the command line attach pid here.
attach_pid = inferior.pid
if self._inferior_startup == self._STARTUP_LAUNCH:
# Build launch args
if not inferior_exe_path:
inferior_exe_path = self.getBuildArtifact("a.out")
if lldb.remote_platform:
remote_path = lldbutil.append_to_process_working_directory(
self, os.path.basename(inferior_exe_path)
)
remote_file_spec = lldb.SBFileSpec(remote_path, False)
err = lldb.remote_platform.Install(
lldb.SBFileSpec(inferior_exe_path, True), remote_file_spec
)
if err.Fail():
raise Exception(
"remote_platform.Install('%s', '%s') failed: %s"
% (inferior_exe_path, remote_path, err)
)
inferior_exe_path = remote_path
launch_args = [inferior_exe_path]
if inferior_args:
launch_args.extend(inferior_args)
# Launch the debug monitor stub, attaching to the inferior.
server = self.connect_to_debug_monitor(attach_pid=attach_pid)
self.assertIsNotNone(server)
self.do_handshake()
# Build the expected protocol stream
if inferior_env:
for name, value in inferior_env.items():
self.add_set_environment_packets(name, value)
if self._inferior_startup == self._STARTUP_LAUNCH:
self.add_verified_launch_packets(launch_args)
return {"inferior": inferior, "server": server}
def do_handshake(self):
server = self._server
server.send_ack()
server.send_packet(b"QStartNoAckMode")
self.assertEqual(server.get_normal_packet(), b"+")
self.assertEqual(server.get_normal_packet(), b"OK")
server.send_ack()
def add_verified_launch_packets(self, launch_args):
self.test_sequence.add_log_lines(
[
"read packet: %s" % build_gdbremote_A_packet(launch_args),
"send packet: $OK#00",
"read packet: $qLaunchSuccess#a5",
"send packet: $OK#00",
],
True,
)
def add_thread_suffix_request_packets(self):
self.test_sequence.add_log_lines(
[
"read packet: $QThreadSuffixSupported#e4",
"send packet: $OK#00",
],
True,
)
def add_process_info_collection_packets(self):
self.test_sequence.add_log_lines(
[
"read packet: $qProcessInfo#dc",
{
"direction": "send",
"regex": r"^\$(.+)#[0-9a-fA-F]{2}$",
"capture": {1: "process_info_raw"},
},
],
True,
)
def add_set_environment_packets(self, name, value):
self.test_sequence.add_log_lines(
[
"read packet: $QEnvironment:" + name + "=" + value + "#00",
"send packet: $OK#00",
],
True,
)
_KNOWN_PROCESS_INFO_KEYS = [
"pid",
"parent-pid",
"real-uid",
"real-gid",
"effective-uid",
"effective-gid",
"cputype",
"cpusubtype",
"ostype",
"triple",
"vendor",
"endian",
"elf_abi",
"ptrsize",
]
def parse_process_info_response(self, context):
# Ensure we have a process info response.
self.assertIsNotNone(context)
process_info_raw = context.get("process_info_raw")
self.assertIsNotNone(process_info_raw)
# Pull out key:value; pairs.
process_info_dict = {
match.group(1): match.group(2)
for match in re.finditer(r"([^:]+):([^;]+);", process_info_raw)
}
# Validate keys are known.
for key, val in list(process_info_dict.items()):
self.assertTrue(key in self._KNOWN_PROCESS_INFO_KEYS)
self.assertIsNotNone(val)
return process_info_dict
def add_register_info_collection_packets(self):
self.test_sequence.add_log_lines(
[
{
"type": "multi_response",
"query": "qRegisterInfo",
"append_iteration_suffix": True,
"end_regex": re.compile(r"^\$(E\d+)?#[0-9a-fA-F]{2}$"),
"save_key": "reg_info_responses",
}
],
True,
)
def parse_register_info_packets(self, context):
"""Return an array of register info dictionaries, one per register info."""
reg_info_responses = context.get("reg_info_responses")
self.assertIsNotNone(reg_info_responses)
# Parse register infos.
return [
parse_reg_info_response(reg_info_response)
for reg_info_response in reg_info_responses
]
def expect_gdbremote_sequence(self):
return expect_lldb_gdbserver_replay(
self,
self._server,
self.test_sequence,
self.DEFAULT_TIMEOUT * len(self.test_sequence),
self.logger,
)
_KNOWN_REGINFO_KEYS = [
"name",
"alt-name",
"bitsize",
"offset",
"encoding",
"format",
"set",
"gcc",
"ehframe",
"dwarf",
"generic",
"container-regs",
"invalidate-regs",
"dynamic_size_dwarf_expr_bytes",
"dynamic_size_dwarf_len",
]
def assert_valid_reg_info(self, reg_info):
# Assert we know about all the reginfo keys parsed.
for key in reg_info:
self.assertTrue(key in self._KNOWN_REGINFO_KEYS)
# Check the bare-minimum expected set of register info keys.
self.assertTrue("name" in reg_info)
self.assertTrue("bitsize" in reg_info)
if not self.getArchitecture() == "aarch64":
self.assertTrue("offset" in reg_info)
self.assertTrue("encoding" in reg_info)
self.assertTrue("format" in reg_info)
def find_pc_reg_info(self, reg_infos):
lldb_reg_index = 0
for reg_info in reg_infos:
if ("generic" in reg_info) and (reg_info["generic"] == "pc"):
return (lldb_reg_index, reg_info)
lldb_reg_index += 1
return (None, None)
def add_lldb_register_index(self, reg_infos):
"""Add a "lldb_register_index" key containing the 0-baed index of each reg_infos entry.
We'll use this when we want to call packets like P/p with a register index but do so
on only a subset of the full register info set.
"""
self.assertIsNotNone(reg_infos)
reg_index = 0
for reg_info in reg_infos:
reg_info["lldb_register_index"] = reg_index
reg_index += 1
def add_query_memory_region_packets(self, address):
self.test_sequence.add_log_lines(
[
"read packet: $qMemoryRegionInfo:{0:x}#00".format(address),
{
"direction": "send",
"regex": r"^\$(.+)#[0-9a-fA-F]{2}$",
"capture": {1: "memory_region_response"},
},
],
True,
)
def parse_key_val_dict(self, key_val_text, allow_dupes=True):
self.assertIsNotNone(key_val_text)
kv_dict = {}
for match in re.finditer(r";?([^:]+):([^;]+)", key_val_text):
key = match.group(1)
val = match.group(2)
if key in kv_dict:
if allow_dupes:
if isinstance(kv_dict[key], list):
kv_dict[key].append(val)
else:
# Promote to list
kv_dict[key] = [kv_dict[key], val]
else:
self.fail(
"key '{}' already present when attempting to add value '{}' (text='{}', dict={})".format(
key, val, key_val_text, kv_dict
)
)
else:
kv_dict[key] = val
return kv_dict
def parse_memory_region_packet(self, context):
# Ensure we have a context.
self.assertIsNotNone(context.get("memory_region_response"))
# Pull out key:value; pairs.
mem_region_dict = self.parse_key_val_dict(context.get("memory_region_response"))
# Validate keys are known.
for key, val in list(mem_region_dict.items()):
self.assertIn(
key,
[
"start",
"size",
"permissions",
"flags",
"name",
"error",
"dirty-pages",
"type",
],
)
self.assertIsNotNone(val)
mem_region_dict["name"] = seven.unhexlify(mem_region_dict.get("name", ""))
# Return the dictionary of key-value pairs for the memory region.
return mem_region_dict
def assert_address_within_memory_region(self, test_address, mem_region_dict):
self.assertIsNotNone(mem_region_dict)
self.assertTrue("start" in mem_region_dict)
self.assertTrue("size" in mem_region_dict)
range_start = int(mem_region_dict["start"], 16)
range_size = int(mem_region_dict["size"], 16)
range_end = range_start + range_size
if test_address < range_start:
self.fail(
"address 0x{0:x} comes before range 0x{1:x} - 0x{2:x} (size 0x{3:x})".format(
test_address, range_start, range_end, range_size
)
)
elif test_address >= range_end:
self.fail(
"address 0x{0:x} comes after range 0x{1:x} - 0x{2:x} (size 0x{3:x})".format(
test_address, range_start, range_end, range_size
)
)
def add_threadinfo_collection_packets(self):
self.test_sequence.add_log_lines(
[
{
"type": "multi_response",
"first_query": "qfThreadInfo",
"next_query": "qsThreadInfo",
"append_iteration_suffix": False,
"end_regex": re.compile(r"^\$(l)?#[0-9a-fA-F]{2}$"),
"save_key": "threadinfo_responses",
}
],
True,
)
def parse_threadinfo_packets(self, context):
"""Return an array of thread ids (decimal ints), one per thread."""
threadinfo_responses = context.get("threadinfo_responses")
self.assertIsNotNone(threadinfo_responses)
thread_ids = []
for threadinfo_response in threadinfo_responses:
new_thread_infos = parse_threadinfo_response(threadinfo_response)
thread_ids.extend(new_thread_infos)
return thread_ids
def launch_with_threads(self, thread_count):
procs = self.prep_debug_monitor_and_inferior(
inferior_args=["thread:new"] * (thread_count - 1) + ["trap"]
)
self.test_sequence.add_log_lines(
[
"read packet: $c#00",
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})([^#]*)#..$",
"capture": {1: "stop_signo", 2: "stop_reply_kv"},
},
],
True,
)
self.add_threadinfo_collection_packets()
context = self.expect_gdbremote_sequence()
threads = self.parse_threadinfo_packets(context)
self.assertGreaterEqual(len(threads), thread_count)
return context, threads
def add_set_breakpoint_packets(
self, address, z_packet_type=0, do_continue=True, breakpoint_kind=1
):
self.test_sequence.add_log_lines(
[ # Set the breakpoint.
"read packet: $Z{2},{0:x},{1}#00".format(
address, breakpoint_kind, z_packet_type
),
# Verify the stub could set it.
"send packet: $OK#00",
],
True,
)
if do_continue:
self.test_sequence.add_log_lines(
[ # Continue the inferior.
"read packet: $c#63",
# Expect a breakpoint stop report.
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})thread:([0-9a-fA-F]+);",
"capture": {1: "stop_signo", 2: "stop_thread_id"},
},
],
True,
)
def add_remove_breakpoint_packets(
self, address, z_packet_type=0, breakpoint_kind=1
):
self.test_sequence.add_log_lines(
[ # Remove the breakpoint.
"read packet: $z{2},{0:x},{1}#00".format(
address, breakpoint_kind, z_packet_type
),
# Verify the stub could unset it.
"send packet: $OK#00",
],
True,
)
def add_qSupported_packets(self, client_features=[]):
features = "".join(";" + x for x in client_features)
self.test_sequence.add_log_lines(
[
"read packet: $qSupported{}#00".format(features),
{
"direction": "send",
"regex": r"^\$(.*)#[0-9a-fA-F]{2}",
"capture": {1: "qSupported_response"},
},
],
True,
)
_KNOWN_QSUPPORTED_STUB_FEATURES = [
"augmented-libraries-svr4-read",
"PacketSize",
"QStartNoAckMode",
"QThreadSuffixSupported",
"QListThreadsInStopReply",
"qXfer:auxv:read",
"qXfer:libraries:read",
"qXfer:libraries-svr4:read",
"qXfer:features:read",
"qXfer:siginfo:read",
"qEcho",
"QPassSignals",
"multiprocess",
"fork-events",
"vfork-events",
"memory-tagging",
"qSaveCore",
"native-signals",
"QNonStop",
"SupportedWatchpointTypes",
"SupportedCompressions",
]
def parse_qSupported_response(self, context):
self.assertIsNotNone(context)
raw_response = context.get("qSupported_response")
self.assertIsNotNone(raw_response)
# For values with key=val, the dict key and vals are set as expected. For feature+, feature- and feature?, the
# +,-,? is stripped from the key and set as the value.
supported_dict = {}
for match in re.finditer(r";?([^=;]+)(=([^;]+))?", raw_response):
key = match.group(1)
val = match.group(3)
# key=val: store as is
if val and len(val) > 0:
supported_dict[key] = val
else:
if len(key) < 2:
raise Exception(
"singular stub feature is too short: must be stub_feature{+,-,?}"
)
supported_type = key[-1]
key = key[:-1]
if not supported_type in ["+", "-", "?"]:
raise Exception(
"malformed stub feature: final character {} not in expected set (+,-,?)".format(
supported_type
)
)
supported_dict[key] = supported_type
# Ensure we know the supported element
if key not in self._KNOWN_QSUPPORTED_STUB_FEATURES:
raise Exception("unknown qSupported stub feature reported: %s" % key)
return supported_dict
def continue_process_and_wait_for_stop(self):
self.test_sequence.add_log_lines(
[
"read packet: $vCont;c#a8",
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})(.*)#[0-9a-fA-F]{2}$",
"capture": {1: "stop_signo", 2: "stop_key_val_text"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
return self.parse_interrupt_packets(context)
def select_modifiable_register(self, reg_infos):
"""Find a register that can be read/written freely."""
PREFERRED_REGISTER_NAMES = set(
[
"rax",
]
)
# First check for the first register from the preferred register name
# set.
alternative_register_index = None
self.assertIsNotNone(reg_infos)
for reg_info in reg_infos:
if ("name" in reg_info) and (reg_info["name"] in PREFERRED_REGISTER_NAMES):
# We found a preferred register. Use it.
return reg_info["lldb_register_index"]
if ("generic" in reg_info) and (
reg_info["generic"] == "fp" or reg_info["generic"] == "arg1"
):
# A frame pointer or first arg register will do as a
# register to modify temporarily.
alternative_register_index = reg_info["lldb_register_index"]
# We didn't find a preferred register. Return whatever alternative register
# we found, if any.
return alternative_register_index
def extract_registers_from_stop_notification(self, stop_key_vals_text):
self.assertIsNotNone(stop_key_vals_text)
kv_dict = self.parse_key_val_dict(stop_key_vals_text)
registers = {}
for key, val in list(kv_dict.items()):
if re.match(r"^[0-9a-fA-F]+$", key):
registers[int(key, 16)] = val
return registers
def gather_register_infos(self):
self.reset_test_sequence()
self.add_register_info_collection_packets()
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
reg_infos = self.parse_register_info_packets(context)
self.assertIsNotNone(reg_infos)
self.add_lldb_register_index(reg_infos)
return reg_infos
def find_generic_register_with_name(self, reg_infos, generic_name):
self.assertIsNotNone(reg_infos)
for reg_info in reg_infos:
if ("generic" in reg_info) and (reg_info["generic"] == generic_name):
return reg_info
return None
def find_register_with_name_and_dwarf_regnum(self, reg_infos, name, dwarf_num):
self.assertIsNotNone(reg_infos)
for reg_info in reg_infos:
if (reg_info["name"] == name) and (reg_info["dwarf"] == dwarf_num):
return reg_info
return None
def decode_gdbremote_binary(self, encoded_bytes):
decoded_bytes = ""
i = 0
while i < len(encoded_bytes):
if encoded_bytes[i] == "}":
# Handle escaped char.
self.assertTrue(i + 1 < len(encoded_bytes))
decoded_bytes += chr(ord(encoded_bytes[i + 1]) ^ 0x20)
i += 2
elif encoded_bytes[i] == "*":
# Handle run length encoding.
self.assertTrue(len(decoded_bytes) > 0)
self.assertTrue(i + 1 < len(encoded_bytes))
repeat_count = ord(encoded_bytes[i + 1]) - 29
decoded_bytes += decoded_bytes[-1] * repeat_count
i += 2
else:
decoded_bytes += encoded_bytes[i]
i += 1
return decoded_bytes
def build_auxv_dict(self, endian, word_size, auxv_data):
self.assertIsNotNone(endian)
self.assertIsNotNone(word_size)
self.assertIsNotNone(auxv_data)
auxv_dict = {}
# PowerPC64le's auxvec has a special key that must be ignored.
# This special key may be used multiple times, resulting in
# multiple key/value pairs with the same key, which would otherwise
# break this test check for repeated keys.
#
# AT_IGNOREPPC = 22
ignored_keys_for_arch = {"powerpc64le": [22]}
arch = self.getArchitecture()
ignore_keys = None
if arch in ignored_keys_for_arch:
ignore_keys = ignored_keys_for_arch[arch]
while len(auxv_data) > 0:
# Chop off key.
raw_key = auxv_data[:word_size]
auxv_data = auxv_data[word_size:]
# Chop of value.
raw_value = auxv_data[:word_size]
auxv_data = auxv_data[word_size:]
# Convert raw text from target endian.
key = unpack_endian_binary_string(endian, raw_key)
value = unpack_endian_binary_string(endian, raw_value)
if ignore_keys and key in ignore_keys:
continue
# Handle ending entry.
if key == 0:
self.assertEqual(value, 0)
return auxv_dict
# The key should not already be present.
self.assertFalse(key in auxv_dict)
auxv_dict[key] = value
self.fail(
"should not reach here - implies required double zero entry not found"
)
return auxv_dict
def read_binary_data_in_chunks(self, command_prefix, chunk_length):
"""Collect command_prefix{offset:x},{chunk_length:x} until a single 'l' or 'l' with data is returned."""
offset = 0
done = False
decoded_data = ""
while not done:
# Grab the next iteration of data.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: ${}{:x},{:x}:#00".format(
command_prefix, offset, chunk_length
),
{
"direction": "send",
"regex": re.compile(
r"^\$([^E])(.*)#[0-9a-fA-F]{2}$", re.MULTILINE | re.DOTALL
),
"capture": {1: "response_type", 2: "content_raw"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
response_type = context.get("response_type")
self.assertIsNotNone(response_type)
self.assertTrue(response_type in ["l", "m"])
# Move offset along.
offset += chunk_length
# Figure out if we're done. We're done if the response type is l.
done = response_type == "l"
# Decode binary data.
content_raw = context.get("content_raw")
if content_raw and len(content_raw) > 0:
self.assertIsNotNone(content_raw)
decoded_data += self.decode_gdbremote_binary(content_raw)
return decoded_data
def add_interrupt_packets(self):
self.test_sequence.add_log_lines(
[
# Send the intterupt.
"read packet: {}".format(chr(3)),
# And wait for the stop notification.
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})(.*)#[0-9a-fA-F]{2}$",
"capture": {1: "stop_signo", 2: "stop_key_val_text"},
},
],
True,
)
def parse_interrupt_packets(self, context):
self.assertIsNotNone(context.get("stop_signo"))
self.assertIsNotNone(context.get("stop_key_val_text"))
return (
int(context["stop_signo"], 16),
self.parse_key_val_dict(context["stop_key_val_text"]),
)
def add_QSaveRegisterState_packets(self, thread_id):
if thread_id:
# Use the thread suffix form.
request = "read packet: $QSaveRegisterState;thread:{:x}#00".format(
thread_id
)
else:
request = "read packet: $QSaveRegisterState#00"
self.test_sequence.add_log_lines(
[
request,
{
"direction": "send",
"regex": r"^\$(E?.*)#[0-9a-fA-F]{2}$",
"capture": {1: "save_response"},
},
],
True,
)
def parse_QSaveRegisterState_response(self, context):
self.assertIsNotNone(context)
save_response = context.get("save_response")
self.assertIsNotNone(save_response)
if len(save_response) < 1 or save_response[0] == "E":
# error received
return (False, None)
else:
return (True, int(save_response))
def add_QRestoreRegisterState_packets(self, save_id, thread_id=None):
if thread_id:
# Use the thread suffix form.
request = "read packet: $QRestoreRegisterState:{};thread:{:x}#00".format(
save_id, thread_id
)
else:
request = "read packet: $QRestoreRegisterState:{}#00".format(save_id)
self.test_sequence.add_log_lines([request, "send packet: $OK#00"], True)
def flip_all_bits_in_each_register_value(self, reg_infos, endian, thread_id=None):
self.assertIsNotNone(reg_infos)
successful_writes = 0
failed_writes = 0
for reg_info in reg_infos:
# Use the lldb register index added to the reg info. We're not necessarily
# working off a full set of register infos, so an inferred register
# index could be wrong.
reg_index = reg_info["lldb_register_index"]
self.assertIsNotNone(reg_index)
reg_byte_size = int(reg_info["bitsize"]) // 8
self.assertTrue(reg_byte_size > 0)
# Handle thread suffix.
if thread_id:
p_request = "read packet: $p{:x};thread:{:x}#00".format(
reg_index, thread_id
)
else:
p_request = "read packet: $p{:x}#00".format(reg_index)
# Read the existing value.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
p_request,
{
"direction": "send",
"regex": r"^\$([0-9a-fA-F]+)#",
"capture": {1: "p_response"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Verify the response length.
p_response = context.get("p_response")
self.assertIsNotNone(p_response)
initial_reg_value = unpack_register_hex_unsigned(endian, p_response)
# Flip the value by xoring with all 1s
all_one_bits_raw = "ff" * (int(reg_info["bitsize"]) // 8)
flipped_bits_int = initial_reg_value ^ int(all_one_bits_raw, 16)
# print("reg (index={}, name={}): val={}, flipped bits (int={}, hex={:x})".format(reg_index, reg_info["name"], initial_reg_value, flipped_bits_int, flipped_bits_int))
# Handle thread suffix for P.
if thread_id:
P_request = "read packet: $P{:x}={};thread:{:x}#00".format(
reg_index,
pack_register_hex(
endian, flipped_bits_int, byte_size=reg_byte_size
),
thread_id,
)
else:
P_request = "read packet: $P{:x}={}#00".format(
reg_index,
pack_register_hex(
endian, flipped_bits_int, byte_size=reg_byte_size
),
)
# Write the flipped value to the register.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
P_request,
{
"direction": "send",
"regex": r"^\$(OK|E[0-9a-fA-F]+)#[0-9a-fA-F]{2}",
"capture": {1: "P_response"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Determine if the write succeeded. There are a handful of registers that can fail, or partially fail
# (e.g. flags, segment selectors, etc.) due to register value restrictions. Don't worry about them
# all flipping perfectly.
P_response = context.get("P_response")
self.assertIsNotNone(P_response)
if P_response == "OK":
successful_writes += 1
else:
failed_writes += 1
# print("reg (index={}, name={}) write FAILED (error: {})".format(reg_index, reg_info["name"], P_response))
# Read back the register value, ensure it matches the flipped
# value.
if P_response == "OK":
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
p_request,
{
"direction": "send",
"regex": r"^\$([0-9a-fA-F]+)#",
"capture": {1: "p_response"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
verify_p_response_raw = context.get("p_response")
self.assertIsNotNone(verify_p_response_raw)
verify_bits = unpack_register_hex_unsigned(
endian, verify_p_response_raw
)
if verify_bits != flipped_bits_int:
# Some registers, like mxcsrmask and others, will permute what's written. Adjust succeed/fail counts.
# print("reg (index={}, name={}): read verify FAILED: wrote {:x}, verify read back {:x}".format(reg_index, reg_info["name"], flipped_bits_int, verify_bits))
successful_writes -= 1
failed_writes += 1
return (successful_writes, failed_writes)
def is_bit_flippable_register(self, reg_info):
if not reg_info:
return False
if not "set" in reg_info:
return False
if reg_info["set"] != "General Purpose Registers":
return False
if ("container-regs" in reg_info) and (len(reg_info["container-regs"]) > 0):
# Don't try to bit flip registers contained in another register.
return False
if re.match("^.s$", reg_info["name"]):
# This is a 2-letter register name that ends in "s", like a segment register.
# Don't try to bit flip these.
return False
if re.match("^(c|)psr$", reg_info["name"]):
# This is an ARM program status register; don't flip it.
return False
# Okay, this looks fine-enough.
return True
def read_register_values(self, reg_infos, endian, thread_id=None):
self.assertIsNotNone(reg_infos)
values = {}
for reg_info in reg_infos:
# We append a register index when load reg infos so we can work
# with subsets.
reg_index = reg_info.get("lldb_register_index")
self.assertIsNotNone(reg_index)
# Handle thread suffix.
if thread_id:
p_request = "read packet: $p{:x};thread:{:x}#00".format(
reg_index, thread_id
)
else:
p_request = "read packet: $p{:x}#00".format(reg_index)
# Read it with p.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
p_request,
{
"direction": "send",
"regex": r"^\$([0-9a-fA-F]+)#",
"capture": {1: "p_response"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Convert value from target endian to integral.
p_response = context.get("p_response")
self.assertIsNotNone(p_response)
self.assertTrue(len(p_response) > 0)
self.assertFalse(p_response[0] == "E")
values[reg_index] = unpack_register_hex_unsigned(endian, p_response)
return values
def add_vCont_query_packets(self):
self.test_sequence.add_log_lines(
[
"read packet: $vCont?#49",
{
"direction": "send",
"regex": r"^\$(vCont)?(.*)#[0-9a-fA-F]{2}$",
"capture": {2: "vCont_query_response"},
},
],
True,
)
def parse_vCont_query_response(self, context):
self.assertIsNotNone(context)
vCont_query_response = context.get("vCont_query_response")
# Handle case of no vCont support at all - in which case the capture
# group will be none or zero length.
if not vCont_query_response or len(vCont_query_response) == 0:
return {}
return {
key: 1 for key in vCont_query_response.split(";") if key and len(key) > 0
}
def count_single_steps_until_true(
self,
thread_id,
predicate,
args,
max_step_count=100,
use_Hc_packet=True,
step_instruction="s",
):
"""Used by single step test that appears in a few different contexts."""
single_step_count = 0
while single_step_count < max_step_count:
self.assertIsNotNone(thread_id)
# Build the packet for the single step instruction. We replace
# {thread}, if present, with the thread_id.
step_packet = "read packet: ${}#00".format(
re.sub(r"{thread}", "{:x}".format(thread_id), step_instruction)
)
# print("\nstep_packet created: {}\n".format(step_packet))
# Single step.
self.reset_test_sequence()
if use_Hc_packet:
self.test_sequence.add_log_lines(
[ # Set the continue thread.
"read packet: $Hc{0:x}#00".format(thread_id),
"send packet: $OK#00",
],
True,
)
self.test_sequence.add_log_lines(
[
# Single step.
step_packet,
# "read packet: $vCont;s:{0:x}#00".format(thread_id),
# Expect a breakpoint stop report.
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})thread:([0-9a-fA-F]+);",
"capture": {1: "stop_signo", 2: "stop_thread_id"},
},
],
True,
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
self.assertIsNotNone(context.get("stop_signo"))
self.assertEqual(
int(context.get("stop_signo"), 16),
lldbutil.get_signal_number("SIGTRAP"),
)
single_step_count += 1
# See if the predicate is true. If so, we're done.
if predicate(args):
return (True, single_step_count)
# The predicate didn't return true within the runaway step count.
return (False, single_step_count)
def g_c1_c2_contents_are(self, args):
"""Used by single step test that appears in a few different contexts."""
g_c1_address = args["g_c1_address"]
g_c2_address = args["g_c2_address"]
expected_g_c1 = args["expected_g_c1"]
expected_g_c2 = args["expected_g_c2"]
# Read g_c1 and g_c2 contents.
self.reset_test_sequence()
self.test_sequence.add_log_lines(
[
"read packet: $m{0:x},{1:x}#00".format(g_c1_address, 1),
{
"direction": "send",
"regex": r"^\$(.+)#[0-9a-fA-F]{2}$",
"capture": {1: "g_c1_contents"},
},
"read packet: $m{0:x},{1:x}#00".format(g_c2_address, 1),
{
"direction": "send",
"regex": r"^\$(.+)#[0-9a-fA-F]{2}$",
"capture": {1: "g_c2_contents"},
},
],
True,
)
# Run the packet stream.
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Check if what we read from inferior memory is what we are expecting.
self.assertIsNotNone(context.get("g_c1_contents"))
self.assertIsNotNone(context.get("g_c2_contents"))
return (seven.unhexlify(context.get("g_c1_contents")) == expected_g_c1) and (
seven.unhexlify(context.get("g_c2_contents")) == expected_g_c2
)
def single_step_only_steps_one_instruction(
self, use_Hc_packet=True, step_instruction="s"
):
"""Used by single step test that appears in a few different contexts."""
# Start up the inferior.
procs = self.prep_debug_monitor_and_inferior(
inferior_args=[
"get-code-address-hex:swap_chars",
"get-data-address-hex:g_c1",
"get-data-address-hex:g_c2",
"sleep:1",
"call-function:swap_chars",
"sleep:5",
]
)
# Run the process
self.test_sequence.add_log_lines(
[ # Start running after initial stop.
"read packet: $c#63",
# Match output line that prints the memory address of the function call entry point.
# Note we require launch-only testing so we can get inferior otuput.
{
"type": "output_match",
"regex": r"^code address: 0x([0-9a-fA-F]+)\r\ndata address: 0x([0-9a-fA-F]+)\r\ndata address: 0x([0-9a-fA-F]+)\r\n$",
"capture": {
1: "function_address",
2: "g_c1_address",
3: "g_c2_address",
},
},
# Now stop the inferior.
"read packet: {}".format(chr(3)),
# And wait for the stop notification.
{
"direction": "send",
"regex": r"^\$T([0-9a-fA-F]{2})thread:([0-9a-fA-F]+);",
"capture": {1: "stop_signo", 2: "stop_thread_id"},
},
],
True,
)
# Run the packet stream.
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Grab the main thread id.
self.assertIsNotNone(context.get("stop_thread_id"))
main_thread_id = int(context.get("stop_thread_id"), 16)
# Grab the function address.
self.assertIsNotNone(context.get("function_address"))
function_address = int(context.get("function_address"), 16)
# Grab the data addresses.
self.assertIsNotNone(context.get("g_c1_address"))
g_c1_address = int(context.get("g_c1_address"), 16)
self.assertIsNotNone(context.get("g_c2_address"))
g_c2_address = int(context.get("g_c2_address"), 16)
# Set a breakpoint at the given address.
if self.getArchitecture().startswith("arm"):
# TODO: Handle case when setting breakpoint in thumb code
BREAKPOINT_KIND = 4
else:
BREAKPOINT_KIND = 1
self.reset_test_sequence()
self.add_set_breakpoint_packets(
function_address, do_continue=True, breakpoint_kind=BREAKPOINT_KIND
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Remove the breakpoint.
self.reset_test_sequence()
self.add_remove_breakpoint_packets(
function_address, breakpoint_kind=BREAKPOINT_KIND
)
context = self.expect_gdbremote_sequence()
self.assertIsNotNone(context)
# Verify g_c1 and g_c2 match expected initial state.
args = {}
args["g_c1_address"] = g_c1_address
args["g_c2_address"] = g_c2_address
args["expected_g_c1"] = "0"
args["expected_g_c2"] = "1"
self.assertTrue(self.g_c1_c2_contents_are(args))
# Verify we take only a small number of steps to hit the first state.
# Might need to work through function entry prologue code.
args["expected_g_c1"] = "1"
args["expected_g_c2"] = "1"
(state_reached, step_count) = self.count_single_steps_until_true(
main_thread_id,
self.g_c1_c2_contents_are,
args,
max_step_count=25,
use_Hc_packet=use_Hc_packet,
step_instruction=step_instruction,
)
self.assertTrue(state_reached)
# Verify we hit the next state.
args["expected_g_c1"] = "1"
args["expected_g_c2"] = "0"
(state_reached, step_count) = self.count_single_steps_until_true(
main_thread_id,
self.g_c1_c2_contents_are,
args,
max_step_count=5,
use_Hc_packet=use_Hc_packet,
step_instruction=step_instruction,
)
self.assertTrue(state_reached)
expected_step_count = 1
arch = self.getArchitecture()
# MIPS required "3" (ADDIU, SB, LD) machine instructions for updation
# of variable value
if re.match("mips", arch):
expected_step_count = 3
# S390X requires "2" (LARL, MVI) machine instructions for updation of
# variable value
if re.match("s390x", arch):
expected_step_count = 2
# ARM64 requires "4" instructions: 2 to compute the address (adrp,
# add), one to materialize the constant (mov) and the store. Once
# addresses and constants are materialized, only one instruction is
# needed.
if re.match("arm64", arch):
before_materialization_step_count = 4
after_matrialization_step_count = 1
self.assertIn(
step_count,
[before_materialization_step_count, after_matrialization_step_count],
)
expected_step_count = after_matrialization_step_count
else:
self.assertEqual(step_count, expected_step_count)
# Verify we hit the next state.
args["expected_g_c1"] = "0"
args["expected_g_c2"] = "0"
(state_reached, step_count) = self.count_single_steps_until_true(
main_thread_id,
self.g_c1_c2_contents_are,
args,
max_step_count=5,
use_Hc_packet=use_Hc_packet,
step_instruction=step_instruction,
)
self.assertTrue(state_reached)
self.assertEqual(step_count, expected_step_count)
# Verify we hit the next state.
args["expected_g_c1"] = "0"
args["expected_g_c2"] = "1"
(state_reached, step_count) = self.count_single_steps_until_true(
main_thread_id,
self.g_c1_c2_contents_are,
args,
max_step_count=5,
use_Hc_packet=use_Hc_packet,
step_instruction=step_instruction,
)
self.assertTrue(state_reached)
self.assertEqual(step_count, expected_step_count)
def maybe_strict_output_regex(self, regex):
return (
".*" + regex + ".*"
if lldbplatformutil.hasChattyStderr(self)
else "^" + regex + "$"
)
def install_and_create_launch_args(self):
exe_path = self.getBuildArtifact("a.out")
if not lldb.remote_platform:
return [exe_path]
remote_path = lldbutil.append_to_process_working_directory(
self, os.path.basename(exe_path)
)
remote_file_spec = lldb.SBFileSpec(remote_path, False)
err = lldb.remote_platform.Install(
lldb.SBFileSpec(exe_path, True), remote_file_spec
)
if err.Fail():
raise Exception(
"remote_platform.Install('%s', '%s') failed: %s"
% (exe_path, remote_path, err)
)
return [remote_path]
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