a4be2c5dcd
Implement x86_64 debug register read/write in support of hardware watchpoints. Hoist LinuxThread::TraceNotify code back into POSIXThread::TraceNotify() Patch by John Wolfe. We still need to rework this later to avoid the #ifdef FreeBSD. llvm-reviews.chandlerc.com/D2572 llvm.org/pr16706 llvm-svn: 201706
103 lines
4.2 KiB
Python
103 lines
4.2 KiB
Python
"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
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import os, time
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import unittest2
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import lldb
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import lldbutil
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from lldbtest import *
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class TestWatchpointEvents (TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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@python_api_test
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@dsym_test
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def test_with_dsym_and_python_api(self):
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"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
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self.buildDsym()
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self.step_over_stepping()
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@python_api_test
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@dwarf_test
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def test_with_dwarf_and_python_api(self):
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"""Test that adding, deleting and modifying watchpoints sends the appropriate events."""
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self.buildDwarf()
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self.step_over_stepping()
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line numbers that we will step to in main:
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self.main_source = "main.c"
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def GetWatchpointEvent (self, event_type):
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# We added a watchpoint so we should get a watchpoint added event.
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event = lldb.SBEvent()
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success = self.listener.WaitForEvent (1, event)
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self.assertTrue(success == True, "Successfully got watchpoint event")
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self.assertTrue (lldb.SBWatchpoint.EventIsWatchpointEvent(event), "Event is a watchpoint event.")
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found_type = lldb.SBWatchpoint.GetWatchpointEventTypeFromEvent (event)
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self.assertTrue (found_type == event_type, "Event is not correct type, expected: %d, found: %d"%(event_type, found_type))
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# There shouldn't be another event waiting around:
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found_event = self.listener.PeekAtNextEventForBroadcasterWithType (self.target_bcast, lldb.SBTarget.eBroadcastBitBreakpointChanged, event)
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if found_event:
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print "Found an event I didn't expect: ", event
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self.assertTrue (not found_event, "Only one event per change.")
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def step_over_stepping(self):
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"""Use Python APIs to test stepping over and hitting breakpoints."""
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exe = os.path.join(os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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self.main_source_spec = lldb.SBFileSpec (self.main_source)
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break_in_main = target.BreakpointCreateBySourceRegex ('// Put a breakpoint here.', self.main_source_spec)
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self.assertTrue(break_in_main, VALID_BREAKPOINT)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# The stop reason of the thread should be breakpoint.
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_main)
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if len(threads) != 1:
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self.fail ("Failed to stop at first breakpoint in main.")
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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local_var = frame.FindVariable ("local_var")
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self.assertTrue (local_var.IsValid())
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self.listener = lldb.SBListener("com.lldb.testsuite_listener")
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self.target_bcast = target.GetBroadcaster()
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self.target_bcast.AddListener (self.listener, lldb.SBTarget.eBroadcastBitWatchpointChanged)
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self.listener.StartListeningForEvents (self.target_bcast, lldb.SBTarget.eBroadcastBitWatchpointChanged)
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error = lldb.SBError()
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local_watch = local_var.Watch(True, True, True, error)
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if not error.Success():
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self.fail ("Failed to make watchpoint for local_var: %s"%(error.GetCString()))
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self.GetWatchpointEvent (lldb.eWatchpointEventTypeAdded)
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# Now change some of the features of this watchpoint and make sure we get events:
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local_watch.SetEnabled(False)
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self.GetWatchpointEvent (lldb.eWatchpointEventTypeDisabled)
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local_watch.SetIgnoreCount(10)
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self.GetWatchpointEvent (lldb.eWatchpointEventTypeIgnoreChanged)
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local_watch.SetCondition ("1 == 2")
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self.GetWatchpointEvent (lldb.eWatchpointEventTypeConditionChanged)
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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