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Diffstat (limited to 'packages/Python/lldbsuite/test/python_api/frame/TestFrames.py')
| -rw-r--r-- | packages/Python/lldbsuite/test/python_api/frame/TestFrames.py | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/python_api/frame/TestFrames.py b/packages/Python/lldbsuite/test/python_api/frame/TestFrames.py new file mode 100644 index 0000000..7cc976f --- /dev/null +++ b/packages/Python/lldbsuite/test/python_api/frame/TestFrames.py @@ -0,0 +1,207 @@ +""" +Use lldb Python SBFrame API to get the argument values of the call stacks. +And other SBFrame API tests. +""" + +from __future__ import print_function + + + +import os, time +import re +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.lldbtest import * + +class FrameAPITestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + @add_test_categories(['pyapi']) + @expectedFailureWindows("llvm.org/pr24778") + def test_get_arg_vals_for_call_stack(self): + """Exercise SBFrame.GetVariables() API to get argument vals.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target by the debugger. + target = self.dbg.CreateTarget(exe) + self.assertTrue(target, VALID_TARGET) + + # Now create a breakpoint on main.c by name 'c'. + breakpoint = target.BreakpointCreateByName('c', 'a.out') + #print("breakpoint:", breakpoint) + self.assertTrue(breakpoint and + breakpoint.GetNumLocations() == 1, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + process = target.GetProcess() + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + # Keeps track of the number of times 'a' is called where it is within a + # depth of 3 of the 'c' leaf function. + callsOfA = 0 + + from six import StringIO as SixStringIO + session = SixStringIO() + while process.GetState() == lldb.eStateStopped: + thread = process.GetThreadAtIndex(0) + # Inspect at most 3 frames. + numFrames = min(3, thread.GetNumFrames()) + for i in range(numFrames): + frame = thread.GetFrameAtIndex(i) + if self.TraceOn(): + print("frame:", frame) + + name = frame.GetFunction().GetName() + if name == 'a': + callsOfA = callsOfA + 1 + + # We'll inspect only the arguments for the current frame: + # + # arguments => True + # locals => False + # statics => False + # in_scope_only => True + valList = frame.GetVariables(True, False, False, True) + argList = [] + for val in valList: + argList.append("(%s)%s=%s" % (val.GetTypeName(), + val.GetName(), + val.GetValue())) + print("%s(%s)" % (name, ", ".join(argList)), file=session) + + # Also check the generic pc & stack pointer. We can't test their absolute values, + # but they should be valid. Uses get_GPRs() from the lldbutil module. + gpr_reg_set = lldbutil.get_GPRs(frame) + pc_value = gpr_reg_set.GetChildMemberWithName("pc") + self.assertTrue (pc_value, "We should have a valid PC.") + pc_value_int = int(pc_value.GetValue(), 0) + # Make sure on arm targets we dont mismatch PC value on the basis of thumb bit. + # Frame PC will not have thumb bit set in case of a thumb instruction as PC. + if self.getArchitecture() in ['arm']: + pc_value_int &= ~1 + self.assertTrue (pc_value_int == frame.GetPC(), "PC gotten as a value should equal frame's GetPC") + sp_value = gpr_reg_set.GetChildMemberWithName("sp") + self.assertTrue (sp_value, "We should have a valid Stack Pointer.") + self.assertTrue (int(sp_value.GetValue(), 0) == frame.GetSP(), "SP gotten as a value should equal frame's GetSP") + + print("---", file=session) + process.Continue() + + # At this point, the inferior process should have exited. + self.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED) + + # Expect to find 'a' on the call stacks two times. + self.assertTrue(callsOfA == 2, + "Expect to find 'a' on the call stacks two times") + # By design, the 'a' call frame has the following arg vals: + # o a((int)val=1, (char)ch='A') + # o a((int)val=3, (char)ch='A') + if self.TraceOn(): + print("Full stack traces when stopped on the breakpoint 'c':") + print(session.getvalue()) + self.expect(session.getvalue(), "Argugment values displayed correctly", + exe=False, + substrs = ["a((int)val=1, (char)ch='A')", + "a((int)val=3, (char)ch='A')"]) + + @add_test_categories(['pyapi']) + def test_frame_api_boundary_condition(self): + """Exercise SBFrame APIs with boundary condition inputs.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target by the debugger. + target = self.dbg.CreateTarget(exe) + self.assertTrue(target, VALID_TARGET) + + # Now create a breakpoint on main.c by name 'c'. + breakpoint = target.BreakpointCreateByName('c', 'a.out') + #print("breakpoint:", breakpoint) + self.assertTrue(breakpoint and + breakpoint.GetNumLocations() == 1, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + process = target.GetProcess() + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + thread = process.GetThreadAtIndex(0) + frame = thread.GetFrameAtIndex(0) + if self.TraceOn(): + print("frame:", frame) + + # Boundary condition testings. + val1 = frame.FindVariable(None, True) + val2 = frame.FindVariable(None, False) + val3 = frame.FindValue(None, lldb.eValueTypeVariableGlobal) + if self.TraceOn(): + print("val1:", val1) + print("val2:", val2) + + frame.EvaluateExpression(None) + + @add_test_categories(['pyapi']) + def test_frame_api_IsEqual(self): + """Exercise SBFrame API IsEqual.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + + # Create a target by the debugger. + target = self.dbg.CreateTarget(exe) + self.assertTrue(target, VALID_TARGET) + + # Now create a breakpoint on main.c by name 'c'. + breakpoint = target.BreakpointCreateByName('c', 'a.out') + #print("breakpoint:", breakpoint) + self.assertTrue(breakpoint and + breakpoint.GetNumLocations() == 1, + VALID_BREAKPOINT) + + # Now launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + process = target.GetProcess() + self.assertTrue(process.GetState() == lldb.eStateStopped, + PROCESS_STOPPED) + + thread = process.GetThreadAtIndex(0) + self.assertTrue(thread) + + frameEntered = thread.GetFrameAtIndex(0) + if self.TraceOn(): + print(frameEntered) + lldbutil.print_stacktrace(thread) + self.assertTrue(frameEntered) + + # Doing two step overs while still inside c(). + thread.StepOver() + thread.StepOver() + self.assertTrue(thread) + frameNow = thread.GetFrameAtIndex(0) + if self.TraceOn(): + print(frameNow) + lldbutil.print_stacktrace(thread) + self.assertTrue(frameNow) + + # The latest two frames are considered equal. + self.assertTrue(frameEntered.IsEqual(frameNow)) + + # Now let's step out of frame c(). + thread.StepOutOfFrame(frameNow) + frameOutOfC = thread.GetFrameAtIndex(0) + if self.TraceOn(): + print(frameOutOfC) + lldbutil.print_stacktrace(thread) + self.assertTrue(frameOutOfC) + + # The latest two frames should not be equal. + self.assertFalse(frameOutOfC.IsEqual(frameNow)) |
