| """ |
| Test that breakpoints do not affect stepping. |
| Check for correct StopReason when stepping to the line with breakpoint |
| which chould be eStopReasonBreakpoint in general, |
| and eStopReasonPlanComplete when breakpoint's condition fails. |
| """ |
| |
| from __future__ import print_function |
| |
| import unittest2 |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| class StepOverBreakpointsTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| 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.assertEquals(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.assertEquals(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.assertEquals(self.thread.GetFrameAtIndex(0).GetLineEntry().GetLine(), self.line4) |
| # breakpoint_2 and _3 should not affect step count |
| self.assertTrue(step_count >= steps_expected) |
| break |
| |
| # Run the process until termination |
| self.process.Continue() |
| self.assertEquals(self.process.GetState(), lldb.eStateExited) |
| |
| @skipIf(bugnumber="llvm.org/pr31972", hostoslist=["windows"]) |
| def test_step_over(self): |
| #lldb.DBG.EnableLog("lldb", ["step","breakpoint"]) |
| |
| self.thread.StepOver() |
| # We should be stopped at the breakpoint_2 line with stop plan complete reason |
| self.assertEquals(self.process.GetState(), lldb.eStateStopped) |
| self.assertEquals(self.thread.GetStopReason(), lldb.eStopReasonPlanComplete) |
| |
| self.thread.StepOver() |
| # We should be stopped at the breakpoint_3 line with stop plan complete reason |
| self.assertEquals(self.process.GetState(), lldb.eStateStopped) |
| self.assertEquals(self.thread.GetStopReason(), lldb.eStopReasonPlanComplete) |
| |
| self.thread.StepOver() |
| # We should be stopped at the breakpoint_4 |
| self.assertEquals(self.process.GetState(), lldb.eStateStopped) |
| self.assertEquals(self.thread.GetStopReason(), lldb.eStopReasonBreakpoint) |
| thread1 = lldbutil.get_one_thread_stopped_at_breakpoint(self.process, self.breakpoint4) |
| self.assertEquals(self.thread, thread1, "Didn't stop at breakpoint 4.") |
| |
| # Check that stepping does not affect breakpoint's hit count |
| self.assertEquals(self.breakpoint1.GetHitCount(), 1) |
| self.assertEquals(self.breakpoint2.GetHitCount(), 0) |
| self.assertEquals(self.breakpoint3.GetHitCount(), 0) |
| self.assertEquals(self.breakpoint4.GetHitCount(), 1) |
| |
| # Run the process until termination |
| self.process.Continue() |
| self.assertEquals(self.process.GetState(), lldb.eStateExited) |
| |
