Esempio n. 1
0
    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 = lldbutil.get_stopped_thread(process,
                                                 lldb.eStopReasonBreakpoint)
            self.assertIsNotNone(thread)
            # 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', 'armv7', 'armv7k']:
                    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')"
                    ])
Esempio n. 2
0
    def test_iter_registers(self):
        """Test iterator works correctly for lldbutil.iter_registers()."""
        self.build()
        exe = os.path.join(os.getcwd(), "a.out")

        target = self.dbg.CreateTarget(exe)
        self.assertTrue(target, VALID_TARGET)

        breakpoint = target.BreakpointCreateByLocation("main.cpp", self.line1)
        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())

        if not process:
            self.fail("SBTarget.LaunchProcess() failed")

        import lldbsuite.test.lldbutil as lldbutil
        for thread in process:
            if thread.GetStopReason() == lldb.eStopReasonBreakpoint:
                for frame in thread:
                    # Dump the registers of this frame using lldbutil.get_GPRs() and friends.
                    if self.TraceOn():
                        print(frame)

                    REGs = lldbutil.get_GPRs(frame)
                    num = len(REGs)
                    if self.TraceOn():
                        print("\nNumber of general purpose registers: {0:d}".format(num))
                    for reg in REGs:
                        self.assertTrue(reg)
                        if self.TraceOn():
                            print("{0!s} => {1!s}".format(reg.GetName(), reg.GetValue()))

                    REGs = lldbutil.get_FPRs(frame)
                    num = len(REGs)
                    if self.TraceOn():
                        print("\nNumber of floating point registers: {0:d}".format(num))
                    for reg in REGs:
                        self.assertTrue(reg)
                        if self.TraceOn():
                            print("{0!s} => {1!s}".format(reg.GetName(), reg.GetValue()))

                    REGs = lldbutil.get_ESRs(frame)
                    if self.platformIsDarwin():
                        num = len(REGs)
                        if self.TraceOn():
                            print("\nNumber of exception state registers: {0:d}".format(num))
                        for reg in REGs:
                            self.assertTrue(reg)
                            if self.TraceOn():
                                print("{0!s} => {1!s}".format(reg.GetName(), reg.GetValue()))
                    else:
                        self.assertIsNone(REGs)

                    # And these should also work.
                    for kind in ["General Purpose Registers",
                                 "Floating Point Registers"]:
                        REGs = lldbutil.get_registers(frame, kind)
                        self.assertTrue(REGs)

                    REGs = lldbutil.get_registers(frame, "Exception State Registers")
                    if self.platformIsDarwin():
                        self.assertIsNotNone(REGs)
                    else:
                        self.assertIsNone(REGs)

                    # We've finished dumping the registers for frame #0.
                    break
Esempio n. 3
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    def test_iter_registers(self):
        """Test iterator works correctly for lldbutil.iter_registers()."""
        self.build()
        exe = os.path.join(os.getcwd(), "a.out")

        target = self.dbg.CreateTarget(exe)
        self.assertTrue(target, VALID_TARGET)

        breakpoint = target.BreakpointCreateByLocation("main.cpp", self.line1)
        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())

        if not process:
            self.fail("SBTarget.LaunchProcess() failed")

        import lldbsuite.test.lldbutil as lldbutil
        for thread in process:
            if thread.GetStopReason() == lldb.eStopReasonBreakpoint:
                for frame in thread:
                    # Dump the registers of this frame using
                    # lldbutil.get_GPRs() and friends.
                    if self.TraceOn():
                        print(frame)

                    REGs = lldbutil.get_GPRs(frame)
                    num = len(REGs)
                    if self.TraceOn():
                        print("\nNumber of general purpose registers: %d" %
                              num)
                    for reg in REGs:
                        self.assertTrue(reg)
                        if self.TraceOn():
                            print("%s => %s" % (reg.GetName(), reg.GetValue()))

                    REGs = lldbutil.get_FPRs(frame)
                    num = len(REGs)
                    if self.TraceOn():
                        print("\nNumber of floating point registers: %d" % num)
                    for reg in REGs:
                        self.assertTrue(reg)
                        if self.TraceOn():
                            print("%s => %s" % (reg.GetName(), reg.GetValue()))

                    REGs = lldbutil.get_ESRs(frame)
                    if self.platformIsDarwin():
                        if self.getArchitecture(
                        ) != 'armv7' and self.getArchitecture() != 'armv7k':
                            num = len(REGs)
                            if self.TraceOn():
                                print(
                                    "\nNumber of exception state registers: %d"
                                    % num)
                            for reg in REGs:
                                self.assertTrue(reg)
                                if self.TraceOn():
                                    print("%s => %s" %
                                          (reg.GetName(), reg.GetValue()))
                    else:
                        self.assertIsNone(REGs)

                    # And these should also work.
                    for kind in [
                            "General Purpose Registers",
                            "Floating Point Registers"
                    ]:
                        REGs = lldbutil.get_registers(frame, kind)
                        self.assertTrue(REGs)

                    REGs = lldbutil.get_registers(frame,
                                                  "Exception State Registers")
                    if self.platformIsDarwin():
                        if self.getArchitecture(
                        ) != 'armv7' and self.getArchitecture() != 'armv7k':
                            self.assertIsNotNone(REGs)
                    else:
                        self.assertIsNone(REGs)

                    # We've finished dumping the registers for frame #0.
                    break
Esempio n. 4
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    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 = lldbutil.get_stopped_thread(
                process, lldb.eStopReasonBreakpoint)
            self.assertIsNotNone(thread)
            # 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')"])