2238dcc393
This is an ongoing series of commits that are reformatting our Python code. Reformatting is done with `black` (23.1.0). If you end up having problems merging this commit because you have made changes to a python file, the best way to handle that is to run `git checkout --ours <yourfile>` and then reformat it with black. RFC: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Differential revision: https://reviews.llvm.org/D151460
120 lines
4.6 KiB
Python
120 lines
4.6 KiB
Python
"""Test stepping over watchpoints."""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class TestStepOverWatchpoint(TestBase):
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NO_DEBUG_INFO_TESTCASE = True
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def get_to_start(self, bkpt_text):
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"""Test stepping over watchpoints."""
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self.build()
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target, process, thread, bkpt = lldbutil.run_to_source_breakpoint(
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self, bkpt_text, lldb.SBFileSpec("main.c")
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)
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frame = thread.GetFrameAtIndex(0)
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self.assertTrue(frame.IsValid(), "Failed to get frame.")
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read_value = frame.FindValue("g_watch_me_read", lldb.eValueTypeVariableGlobal)
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self.assertTrue(read_value.IsValid(), "Failed to find read value.")
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error = lldb.SBError()
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# resolve_location=True, read=True, write=False
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read_watchpoint = read_value.Watch(True, True, False, error)
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self.assertSuccess(error, "Error while setting watchpoint")
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self.assertTrue(read_watchpoint, "Failed to set read watchpoint.")
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# Disable the breakpoint we hit so we don't muddy the waters with
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# stepping off from the breakpoint:
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bkpt.SetEnabled(False)
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return (target, process, thread, frame, read_watchpoint)
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# Read-write watchpoints not supported on SystemZ
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@expectedFailureAll(archs=["s390x"])
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@add_test_categories(["basic_process"])
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def test_step_over(self):
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target, process, thread, frame, wp = self.get_to_start("Set a breakpoint here")
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thread.StepOver()
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self.assertStopReason(
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thread.GetStopReason(),
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lldb.eStopReasonWatchpoint,
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STOPPED_DUE_TO_WATCHPOINT,
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)
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self.assertEquals(thread.GetStopDescription(20), "watchpoint 1")
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@expectedFailureAll(
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oslist=["freebsd", "linux"],
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archs=["aarch64", "arm"],
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bugnumber="llvm.org/pr26031",
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)
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# Read-write watchpoints not supported on SystemZ
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@expectedFailureAll(archs=["s390x"])
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@expectedFailureAll(
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oslist=["ios", "watchos", "tvos", "bridgeos", "macosx"],
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archs=["aarch64", "arm"],
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bugnumber="<rdar://problem/34027183>",
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)
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@add_test_categories(["basic_process"])
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def test_step_instruction(self):
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target, process, thread, frame, wp = self.get_to_start(
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"Set breakpoint after call"
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)
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self.step_inst_for_watchpoint(1)
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write_value = frame.FindValue("g_watch_me_write", lldb.eValueTypeVariableGlobal)
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self.assertTrue(write_value, "Failed to find write value.")
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# Most of the MIPS boards provide only one H/W watchpoints, and S/W
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# watchpoints are not supported yet
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arch = self.getArchitecture()
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if re.match("^mips", arch) or re.match("powerpc64le", arch):
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self.runCmd("watchpoint delete 1")
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error = lldb.SBError()
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# resolve_location=True, read=False, write=True
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write_watchpoint = write_value.Watch(True, False, True, error)
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self.assertTrue(write_watchpoint, "Failed to set write watchpoint.")
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self.assertSuccess(error, "Error while setting watchpoint")
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thread.StepOver()
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self.assertStopReason(
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thread.GetStopReason(),
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lldb.eStopReasonWatchpoint,
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STOPPED_DUE_TO_WATCHPOINT,
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)
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self.assertEquals(thread.GetStopDescription(20), "watchpoint 2")
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process.Continue()
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self.assertState(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
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self.assertEquals(thread.GetStopDescription(20), "step over")
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self.step_inst_for_watchpoint(2)
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def step_inst_for_watchpoint(self, wp_id):
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watchpoint_hit = False
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current_line = self.frame().GetLineEntry().GetLine()
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while self.frame().GetLineEntry().GetLine() == current_line:
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self.thread().StepInstruction(False) # step_over=False
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stop_reason = self.thread().GetStopReason()
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if stop_reason == lldb.eStopReasonWatchpoint:
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self.assertFalse(watchpoint_hit, "Watchpoint already hit.")
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expected_stop_desc = "watchpoint %d" % wp_id
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actual_stop_desc = self.thread().GetStopDescription(20)
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self.assertEquals(
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actual_stop_desc, expected_stop_desc, "Watchpoint ID didn't match."
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)
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watchpoint_hit = True
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else:
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self.assertStopReason(
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stop_reason, lldb.eStopReasonPlanComplete, STOPPED_DUE_TO_STEP_IN
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)
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self.assertTrue(watchpoint_hit, "Watchpoint never hit.")
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