| """Test stepping over watchpoints and instruction stepping past watchpoints.""" |
| |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class TestStepOverWatchpoint(TestBase): |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| def get_to_start(self, bkpt_text): |
| """Test stepping over watchpoints and instruction stepping past watchpoints..""" |
| self.build() |
| target, process, thread, bkpt = lldbutil.run_to_source_breakpoint( |
| self, bkpt_text, lldb.SBFileSpec("main.c") |
| ) |
| return (target, process, thread, frame, read_watchpoint) |
| |
| @add_test_categories(["basic_process"]) |
| @expectedFailureAll( |
| macos_version=["<", "14.4"], |
| archs=["aarch64", "arm"], |
| bugnumber="<rdar://problem/106868647>", |
| ) |
| def test_step_over_read_watchpoint(self): |
| self.build() |
| target, process, thread, bkpt = lldbutil.run_to_source_breakpoint( |
| self, "break here for read watchpoints", lldb.SBFileSpec("main.c") |
| ) |
| |
| frame = thread.GetFrameAtIndex(0) |
| self.assertTrue(frame.IsValid(), "Failed to get frame.") |
| |
| read_value = frame.FindValue("g_watch_me_read", lldb.eValueTypeVariableGlobal) |
| self.assertTrue(read_value.IsValid(), "Failed to find read value.") |
| |
| error = lldb.SBError() |
| |
| # resolve_location=True, read=True, write=False |
| read_watchpoint = read_value.Watch(True, True, False, error) |
| self.assertSuccess(error, "Error while setting watchpoint") |
| self.assertTrue(read_watchpoint, "Failed to set read watchpoint.") |
| |
| # Disable the breakpoint we hit so we don't muddy the waters with |
| # stepping off from the breakpoint: |
| bkpt.SetEnabled(False) |
| |
| thread.StepOver() |
| self.assertStopReason( |
| thread.GetStopReason(), |
| lldb.eStopReasonWatchpoint, |
| STOPPED_DUE_TO_WATCHPOINT, |
| ) |
| self.assertEqual(thread.GetStopDescription(20), "watchpoint 1") |
| |
| process.Continue() |
| self.assertState(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED) |
| self.assertEqual(thread.GetStopDescription(20), "step over") |
| |
| self.step_inst_for_watchpoint(1) |
| |
| @add_test_categories(["basic_process"]) |
| @expectedFailureAll( |
| macos_version=["<", "14.4"], |
| archs=["aarch64", "arm"], |
| bugnumber="<rdar://problem/106868647>", |
| ) |
| def test_step_over_write_watchpoint(self): |
| self.build() |
| target, process, thread, bkpt = lldbutil.run_to_source_breakpoint( |
| self, "break here for modify watchpoints", lldb.SBFileSpec("main.c") |
| ) |
| |
| # Disable the breakpoint we hit so we don't muddy the waters with |
| # stepping off from the breakpoint: |
| bkpt.SetEnabled(False) |
| |
| frame = thread.GetFrameAtIndex(0) |
| self.assertTrue(frame.IsValid(), "Failed to get frame.") |
| |
| write_value = frame.FindValue("g_watch_me_write", lldb.eValueTypeVariableGlobal) |
| self.assertTrue(write_value, "Failed to find write value.") |
| |
| error = lldb.SBError() |
| # resolve_location=True, read=False, modify=True |
| write_watchpoint = write_value.Watch(True, False, True, error) |
| self.assertTrue(write_watchpoint, "Failed to set write watchpoint.") |
| self.assertSuccess(error, "Error while setting watchpoint") |
| |
| thread.StepOver() |
| self.assertStopReason( |
| thread.GetStopReason(), |
| lldb.eStopReasonWatchpoint, |
| STOPPED_DUE_TO_WATCHPOINT, |
| ) |
| self.assertEqual(thread.GetStopDescription(20), "watchpoint 1") |
| |
| process.Continue() |
| self.assertState(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED) |
| self.assertEqual(thread.GetStopDescription(20), "step over") |
| |
| self.step_inst_for_watchpoint(1) |
| |
| def step_inst_for_watchpoint(self, wp_id): |
| watchpoint_hit = False |
| current_line = self.frame().GetLineEntry().GetLine() |
| while self.frame().GetLineEntry().GetLine() == current_line: |
| self.thread().StepInstruction(False) # step_over=False |
| stop_reason = self.thread().GetStopReason() |
| if stop_reason == lldb.eStopReasonWatchpoint: |
| self.assertFalse(watchpoint_hit, "Watchpoint already hit.") |
| expected_stop_desc = "watchpoint %d" % wp_id |
| actual_stop_desc = self.thread().GetStopDescription(20) |
| self.assertEqual( |
| actual_stop_desc, expected_stop_desc, "Watchpoint ID didn't match." |
| ) |
| watchpoint_hit = True |
| else: |
| self.assertStopReason( |
| stop_reason, lldb.eStopReasonPlanComplete, STOPPED_DUE_TO_STEP_IN |
| ) |
| self.assertTrue(watchpoint_hit, "Watchpoint never hit.") |
