""" Test some lldb command abbreviations. """ from __future__ import print_function 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) # Create any breakpoints we need breakpoint1 = target.BreakpointCreateBySourceRegex( 'Set breakpoint 1 here', lldb.SBFileSpec("main.cpp", 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() threads = lldbutil.get_threads_stopped_at_breakpoint( process, breakpoint2) if self.TraceOn(): for t in process.threads: print(t) if t.GetStopReason() != lldb.eStopReasonBreakpoint: self.runCmd("bt") 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) (target, process, thread, breakpoint1) = lldbutil.run_to_source_breakpoint( self, 'Set breakpoint 1 here', lldb.SBFileSpec('main.cpp', 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.")