"""
Test some lldb command abbreviations.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ExecTestCase(TestBase):
NO_DEBUG_INFO_TESTCASE = True
@expectedFailureAll(
archs=["i386"], oslist=no_match(["freebsd"]), bugnumber="rdar://28656532"
)
@expectedFailureAll(
oslist=["ios", "tvos", "watchos", "bridgeos"],
bugnumber="rdar://problem/34559552",
) # this exec test has problems on ios systems
@expectedFailureNetBSD
@skipIfAsan # rdar://problem/43756823
@skipIfWindows
def test_hitting_exec(self):
self.do_test(False)
@expectedFailureAll(
archs=["i386"], oslist=no_match(["freebsd"]), bugnumber="rdar://28656532"
)
@expectedFailureAll(
oslist=["ios", "tvos", "watchos", "bridgeos"],
bugnumber="rdar://problem/34559552",
) # this exec test has problems on ios systems
@expectedFailureNetBSD
@skipIfAsan # rdar://problem/43756823
@skipIfWindows
def test_skipping_exec(self):
self.do_test(True)
def do_test(self, skip_exec):
self.build()
exe = self.getBuildArtifact("a.out")
secondprog = self.getBuildArtifact("secondprog")
# Create the target
target = self.dbg.CreateTarget(exe)
lldbutil.install_to_target(self, secondprog)
# Create any breakpoints we need
breakpoint1 = target.BreakpointCreateBySourceRegex(
"Set breakpoint 1 here", lldb.SBFileSpec("main.c", False)
)
self.assertTrue(breakpoint1, VALID_BREAKPOINT)
breakpoint2 = target.BreakpointCreateBySourceRegex(
"Set breakpoint 2 here", lldb.SBFileSpec("secondprog.cpp", False)
)
self.assertTrue(breakpoint2, VALID_BREAKPOINT)
# Launch the process
process = target.LaunchSimple(None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
if self.TraceOn():
self.runCmd("settings show target.process.stop-on-exec", check=False)
if skip_exec:
self.dbg.HandleCommand("settings set target.process.stop-on-exec false")
def cleanup():
self.runCmd(
"settings set target.process.stop-on-exec false", check=False
)
# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
# The stop reason of the thread should be breakpoint.
self.assertState(
process.GetState(), lldb.eStateStopped, STOPPED_DUE_TO_BREAKPOINT
)
threads = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint1)
self.assertEqual(len(threads), 1)
# We had a deadlock tearing down the TypeSystemMap on exec, but only if some
# expression had been evaluated. So make sure we do that here so the teardown
# is not trivial.
thread = threads[0]
value = thread.frames[0].EvaluateExpression("1 + 2")
self.assertTrue(value.IsValid(), "Expression evaluated successfully")
int_value = value.GetValueAsSigned()
self.assertEqual(int_value, 3, "Expression got the right result.")
# Run and we should stop due to exec
process.Continue()
if not skip_exec:
self.assertNotEqual(
process.GetState(), lldb.eStateExited, "Process should not have exited!"
)
self.assertState(
process.GetState(),
lldb.eStateStopped,
"Process should be stopped at __dyld_start",
)
threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonExec)
self.assertEqual(len(threads), 1, "We got a thread stopped for exec.")
# Run and we should stop at breakpoint in main after exec
process.Continue()
self.assertState(process.GetState(), lldb.eStateStopped)
for t in process.threads:
if t.stop_reason != lldb.eStopReasonNone:
self.assertStopReason(
t.stop_reason, lldb.eStopReasonBreakpoint, "Unexpected stop reason"
)
if self.TraceOn():
print(t)
if t.stop_reason != lldb.eStopReasonBreakpoint:
self.runCmd("bt")
threads = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint2)
self.assertEqual(len(threads), 1, "Stopped at breakpoint in exec'ed process.")
@expectedFailureAll(
archs=["i386"], oslist=no_match(["freebsd"]), bugnumber="rdar://28656532"
)
@expectedFailureAll(
oslist=["ios", "tvos", "watchos", "bridgeos"],
bugnumber="rdar://problem/34559552",
) # this exec test has problems on ios systems
@expectedFailureNetBSD
@skipIfAsan # rdar://problem/43756823
@skipIfWindows
def test_correct_thread_plan_state_before_exec(self):
"""
In this test we make sure that the Thread* cache in the ThreadPlans
is cleared correctly when performing exec
"""
self.build()
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
lldbutil.install_to_target(self, self.getBuildArtifact("secondprog"))
(target, process, thread, breakpoint1) = lldbutil.run_to_source_breakpoint(
self, "Set breakpoint 1 here", lldb.SBFileSpec("main.c", False)
)
# The stop reason of the thread should be breakpoint.
self.assertState(
process.GetState(), lldb.eStateStopped, STOPPED_DUE_TO_BREAKPOINT
)
threads = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint1)
self.assertEqual(len(threads), 1)
# We perform an instruction step, which effectively sets the cache of the base
# thread plan, which should be cleared when a new thread list appears.
#
# Continuing after this instruction step will trigger a call to
# ThreadPlan::ShouldReportRun, which sets the ThreadPlan's Thread cache to
# the old Thread* value. In Process::UpdateThreadList we are clearing this
# cache in preparation for the new ThreadList.
#
# Not doing this stepping will cause LLDB to first execute a private single step
# past the current breakpoint, which eventually avoids the call to ShouldReportRun,
# thus not setting the cache to its invalid value.
thread.StepInstruction(False)
# Run and we should stop due to exec
breakpoint2 = target.BreakpointCreateBySourceRegex(
"Set breakpoint 2 here", lldb.SBFileSpec("secondprog.cpp", False)
)
process.Continue()
self.assertNotEqual(
process.GetState(), lldb.eStateExited, "Process should not have exited!"
)
self.assertState(
process.GetState(),
lldb.eStateStopped,
"Process should be stopped at __dyld_start",
)
threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonExec)
self.assertEqual(len(threads), 1, "We got a thread stopped for exec.")
# Run and we should stop at breakpoint in main after exec
process.Continue()
threads = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint2)
self.assertEqual(len(threads), 1, "Stopped at breakpoint in exec'ed process.")
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