| """ |
| Test some SBValue APIs. |
| """ |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class ValueAPITestCase(TestBase): |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # We'll use the test method name as the exe_name. |
| self.exe_name = self.testMethodName |
| # Find the line number to of function 'c'. |
| self.line = line_number("main.c", "// Break at this line") |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24772") |
| def test(self): |
| """Exercise some SBValue APIs.""" |
| d = {"EXE": self.exe_name} |
| self.build(dictionary=d) |
| self.setTearDownCleanup(dictionary=d) |
| exe = self.getBuildArtifact(self.exe_name) |
| |
| # Create a target by the debugger. |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Create the breakpoint inside function 'main'. |
| breakpoint = target.BreakpointCreateByLocation("main.c", self.line) |
| self.assertTrue(breakpoint, VALID_BREAKPOINT) |
| |
| # Now launch the process, and do not stop at entry point. |
| process = target.LaunchSimple(None, None, self.get_process_working_directory()) |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # Get Frame #0. |
| self.assertState(process.GetState(), lldb.eStateStopped) |
| thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) |
| self.assertTrue( |
| thread.IsValid(), |
| "There should be a thread stopped due to breakpoint condition", |
| ) |
| frame0 = thread.GetFrameAtIndex(0) |
| |
| # Get global variable 'days_of_week'. |
| list = target.FindGlobalVariables("days_of_week", 1) |
| days_of_week = list.GetValueAtIndex(0) |
| self.assertTrue(days_of_week, VALID_VARIABLE) |
| self.assertEqual(days_of_week.GetNumChildren(), 7, VALID_VARIABLE) |
| self.DebugSBValue(days_of_week) |
| |
| # Use this to test the "child" and "children" accessors: |
| children = days_of_week.children |
| self.assertEqual(len(children), 7, VALID_VARIABLE) |
| for i in range(0, len(children)): |
| day = days_of_week.child[i] |
| list_day = children[i] |
| self.assertNotEqual(day, None) |
| self.assertNotEqual(list_day, None) |
| self.assertEqual(day.GetSummary(), list_day.GetSummary(), VALID_VARIABLE) |
| |
| # Spot check the actual value: |
| first_day = days_of_week.child[1] |
| self.assertEqual(first_day.GetSummary(), '"Monday"', VALID_VARIABLE) |
| |
| # Get global variable 'weekdays'. |
| list = target.FindGlobalVariables("weekdays", 1) |
| weekdays = list.GetValueAtIndex(0) |
| self.assertTrue(weekdays, VALID_VARIABLE) |
| self.assertEqual(weekdays.GetNumChildren(), 5, VALID_VARIABLE) |
| self.DebugSBValue(weekdays) |
| |
| # Get global variable 'g_table'. |
| list = target.FindGlobalVariables("g_table", 1) |
| g_table = list.GetValueAtIndex(0) |
| self.assertTrue(g_table, VALID_VARIABLE) |
| self.assertEqual(g_table.GetNumChildren(), 2, VALID_VARIABLE) |
| self.DebugSBValue(g_table) |
| |
| fmt = lldbutil.BasicFormatter() |
| cvf = lldbutil.ChildVisitingFormatter(indent_child=2) |
| rdf = lldbutil.RecursiveDecentFormatter(indent_child=2) |
| if self.TraceOn(): |
| print(fmt.format(days_of_week)) |
| print(cvf.format(days_of_week)) |
| print(cvf.format(weekdays)) |
| print(rdf.format(g_table)) |
| |
| # Get variable 'my_int_ptr'. |
| value = frame0.FindVariable("my_int_ptr") |
| self.assertTrue(value, VALID_VARIABLE) |
| self.DebugSBValue(value) |
| |
| # Get what 'my_int_ptr' points to. |
| pointed = value.GetChildAtIndex(0) |
| self.assertTrue(pointed, VALID_VARIABLE) |
| self.DebugSBValue(pointed) |
| |
| # While we are at it, verify that 'my_int_ptr' points to 'g_my_int'. |
| symbol = target.ResolveLoadAddress(int(pointed.GetLocation(), 0)).GetSymbol() |
| self.assertTrue(symbol) |
| self.expect(symbol.GetName(), exe=False, startstr="g_my_int") |
| |
| # Get variable 'str_ptr'. |
| value = frame0.FindVariable("str_ptr") |
| self.assertTrue(value, VALID_VARIABLE) |
| self.DebugSBValue(value) |
| |
| # SBValue::TypeIsPointerType() should return true. |
| self.assertTrue(value.TypeIsPointerType()) |
| |
| # Verify the SBValue::GetByteSize() API is working correctly. |
| arch = self.getArchitecture() |
| if arch == "i386": |
| self.assertEqual(value.GetByteSize(), 4) |
| elif arch == "x86_64": |
| self.assertEqual(value.GetByteSize(), 8) |
| |
| # Get child at index 5 => 'Friday'. |
| child = value.GetChildAtIndex(5, lldb.eNoDynamicValues, True) |
| self.assertTrue(child, VALID_VARIABLE) |
| self.DebugSBValue(child) |
| |
| self.expect(child.GetSummary(), exe=False, substrs=["Friday"]) |
| |
| # Now try to get at the same variable using GetValueForExpressionPath(). |
| # These two SBValue objects should have the same value. |
| val2 = value.GetValueForExpressionPath("[5]") |
| self.assertTrue(val2, VALID_VARIABLE) |
| self.DebugSBValue(val2) |
| self.assertTrue( |
| child.GetValue() == val2.GetValue() |
| and child.GetSummary() == val2.GetSummary() |
| ) |
| |
| val_i = target.EvaluateExpression("i") |
| val_s = target.EvaluateExpression("s") |
| val_a = target.EvaluateExpression("a") |
| self.assertTrue( |
| val_s.GetChildMemberWithName("a").GetAddress().IsValid(), VALID_VARIABLE |
| ) |
| self.assertTrue(val_s.GetChildMemberWithName("a").AddressOf(), VALID_VARIABLE) |
| self.assertTrue(val_a.Cast(val_i.GetType()).AddressOf(), VALID_VARIABLE) |
| |
| # Test some other cases of the Cast API. We allow casts from one struct type |
| # to another, which is a little weird, but we don't support casting from a |
| # smaller type to a larger as we often wouldn't know how to get the extra data: |
| val_f = target.EvaluateExpression("f") |
| bad_cast = val_s.Cast(val_f.GetType()) |
| self.assertFailure(bad_cast.GetError(), |
| "Can only cast to a type that is equal to or smaller than the orignal type.") |
| weird_cast = val_f.Cast(val_s.GetType()) |
| self.assertSuccess(weird_cast.GetError(), |
| "Can cast from a larger to a smaller") |
| self.assertEqual(weird_cast.GetChildMemberWithName("a").GetValueAsSigned(0), 33, |
| "Got the right value") |
| |
| # Check that lldb.value implements truth testing. |
| self.assertFalse(lldb.value(frame0.FindVariable("bogus"))) |
| self.assertTrue(lldb.value(frame0.FindVariable("uinthex"))) |
| |
| self.assertEqual( |
| int(lldb.value(frame0.FindVariable("uinthex"))), |
| 3768803088, |
| "uinthex == 3768803088", |
| ) |
| self.assertEqual( |
| int(lldb.value(frame0.FindVariable("sinthex"))), |
| -526164208, |
| "sinthex == -526164208", |
| ) |
| |
| # Check value_iter works correctly. |
| for v in [ |
| lldb.value(frame0.FindVariable("uinthex")), |
| lldb.value(frame0.FindVariable("sinthex")), |
| ]: |
| self.assertTrue(v) |
| |
| self.assertEqual( |
| frame0.FindVariable("uinthex").GetValueAsUnsigned(), |
| 3768803088, |
| "unsigned uinthex == 3768803088", |
| ) |
| self.assertEqual( |
| frame0.FindVariable("sinthex").GetValueAsUnsigned(), |
| 3768803088, |
| "unsigned sinthex == 3768803088", |
| ) |
| |
| self.assertEqual( |
| frame0.FindVariable("uinthex").GetValueAsSigned(), |
| -526164208, |
| "signed uinthex == -526164208", |
| ) |
| self.assertEqual( |
| frame0.FindVariable("sinthex").GetValueAsSigned(), |
| -526164208, |
| "signed sinthex == -526164208", |
| ) |
