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