| """ | |
| Test that breakpoints do not affect stepping. | |
| Check for correct StopReason when stepping to the line with breakpoint | |
| which should be eStopReasonBreakpoint in general, | |
| and eStopReasonPlanComplete when breakpoint's condition fails. | |
| """ | |
| import lldb | |
| from lldbsuite.test.decorators import * | |
| from lldbsuite.test.lldbtest import * | |
| from lldbsuite.test import lldbutil | |
| class StepOverBreakpointsTestCase(TestBase): | |
| def setUp(self): | |
| TestBase.setUp(self) | |
| self.build() | |
| exe = self.getBuildArtifact("a.out") | |
| src = lldb.SBFileSpec("main.cpp") | |
| # Create a target by the debugger. | |
| self.target = self.dbg.CreateTarget(exe) | |
| self.assertTrue(self.target, VALID_TARGET) | |
| # Setup four breakpoints, two of them with false condition | |
| self.line1 = line_number("main.cpp", "breakpoint_1") | |
| self.line4 = line_number("main.cpp", "breakpoint_4") | |
| self.breakpoint1 = self.target.BreakpointCreateByLocation(src, self.line1) | |
| self.assertTrue( | |
| self.breakpoint1 and self.breakpoint1.GetNumLocations() == 1, | |
| VALID_BREAKPOINT, | |
| ) | |
| self.breakpoint2 = self.target.BreakpointCreateBySourceRegex( | |
| "breakpoint_2", src | |
| ) | |
| self.breakpoint2.GetLocationAtIndex(0).SetCondition("false") | |
| self.breakpoint3 = self.target.BreakpointCreateBySourceRegex( | |
| "breakpoint_3", src | |
| ) | |
| self.breakpoint3.GetLocationAtIndex(0).SetCondition("false") | |
| self.breakpoint4 = self.target.BreakpointCreateByLocation(src, self.line4) | |
| # Start debugging | |
| self.process = self.target.LaunchSimple( | |
| None, None, self.get_process_working_directory() | |
| ) | |
| self.assertIsNotNone(self.process, PROCESS_IS_VALID) | |
| self.thread = lldbutil.get_one_thread_stopped_at_breakpoint( | |
| self.process, self.breakpoint1 | |
| ) | |
| self.assertIsNotNone(self.thread, "Didn't stop at breakpoint 1.") | |
| def test_step_instruction(self): | |
| # Count instructions between breakpoint_1 and breakpoint_4 | |
| contextList = self.target.FindFunctions("main", lldb.eFunctionNameTypeAuto) | |
| self.assertEqual(contextList.GetSize(), 1) | |
| symbolContext = contextList.GetContextAtIndex(0) | |
| function = symbolContext.GetFunction() | |
| self.assertTrue(function) | |
| instructions = function.GetInstructions(self.target) | |
| addr_1 = self.breakpoint1.GetLocationAtIndex(0).GetAddress() | |
| addr_4 = self.breakpoint4.GetLocationAtIndex(0).GetAddress() | |
| # if third argument is true then the count will be the number of | |
| # instructions on which a breakpoint can be set. | |
| # start = addr_1, end = addr_4, canSetBreakpoint = True | |
| steps_expected = instructions.GetInstructionsCount(addr_1, addr_4, True) | |
| step_count = 0 | |
| # Step from breakpoint_1 to breakpoint_4 | |
| while True: | |
| self.thread.StepInstruction(True) | |
| step_count = step_count + 1 | |
| self.assertState(self.process.GetState(), lldb.eStateStopped) | |
| self.assertTrue( | |
| self.thread.GetStopReason() == lldb.eStopReasonPlanComplete | |
| or self.thread.GetStopReason() == lldb.eStopReasonBreakpoint | |
| ) | |
| if self.thread.GetStopReason() == lldb.eStopReasonBreakpoint: | |
| # we should not stop on breakpoint_2 and _3 because they have false condition | |
| self.assertEqual( | |
| self.thread.GetFrameAtIndex(0).GetLineEntry().GetLine(), self.line4 | |
| ) | |
| # breakpoint_2 and _3 should not affect step count | |
| self.assertGreaterEqual(step_count, steps_expected) | |
| break | |
| # We did a `stepi` when we hit our last breakpoint, and the stepi was not | |
| # completed yet, so when we resume it will complete (running process.Continue() | |
| # would have the same result - we step one instruction and stop again when | |
| # our interrupted stepi completes). | |
| self.thread.StepInstruction(True) | |
| # Run the process until termination | |
| self.process.Continue() | |
| self.assertState(self.process.GetState(), lldb.eStateExited) | |
| @skipIf(bugnumber="llvm.org/pr31972", hostoslist=["windows"]) | |
| def test_step_over(self): | |
| self.thread.StepOver() | |
| # We should be stopped at the breakpoint_2 line with stop plan complete reason | |
| self.assertState(self.process.GetState(), lldb.eStateStopped) | |
| self.assertStopReason(self.thread.GetStopReason(), lldb.eStopReasonPlanComplete) | |
| self.thread.StepOver() | |
| # We should be stopped at the breakpoint_3 line with stop plan complete reason | |
| self.assertState(self.process.GetState(), lldb.eStateStopped) | |
| self.assertStopReason(self.thread.GetStopReason(), lldb.eStopReasonPlanComplete) | |
| self.thread.StepOver() | |
| # We should be stopped at the breakpoint_4 | |
| self.assertState(self.process.GetState(), lldb.eStateStopped) | |
| self.assertStopReason(self.thread.GetStopReason(), lldb.eStopReasonBreakpoint) | |
| thread1 = lldbutil.get_one_thread_stopped_at_breakpoint( | |
| self.process, self.breakpoint4 | |
| ) | |
| self.assertEqual(self.thread, thread1, "Didn't stop at breakpoint 4.") | |
| # Check that stepping does not affect breakpoint's hit count | |
| self.assertEqual(self.breakpoint1.GetHitCount(), 1) | |
| self.assertEqual(self.breakpoint2.GetHitCount(), 0) | |
| self.assertEqual(self.breakpoint3.GetHitCount(), 0) | |
| self.assertEqual(self.breakpoint4.GetHitCount(), 1) | |
| # Run the process until termination | |
| self.process.Continue() | |
| self.assertState(self.process.GetState(), lldb.eStateExited) |