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"""
Test that we handle breakpoints on consecutive instructions correctly.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ConsecutiveBreakpointsTestCase(TestBase):
def prepare_test(self):
self.build()
(
self.target,
self.process,
self.thread,
bkpt,
) = lldbutil.run_to_source_breakpoint(
self, "Set breakpoint here", lldb.SBFileSpec("main.cpp")
)
# Set breakpoint to the next instruction
frame = self.thread.GetFrameAtIndex(0)
address = frame.GetPCAddress()
instructions = self.target.ReadInstructions(address, 2)
self.assertEqual(len(instructions), 2)
self.bkpt_address = instructions[1].GetAddress()
self.breakpoint2 = self.target.BreakpointCreateByAddress(
self.bkpt_address.GetLoadAddress(self.target)
)
self.assertTrue(
self.breakpoint2 and self.breakpoint2.GetNumLocations() == 1,
VALID_BREAKPOINT,
)
def finish_test(self):
# Run the process until termination
self.process.Continue()
self.assertState(self.process.GetState(), lldb.eStateExited)
@no_debug_info_test
def test_continue(self):
"""Test that continue stops at the second breakpoint."""
self.prepare_test()
self.process.Continue()
self.assertState(self.process.GetState(), lldb.eStateStopped)
# We should be stopped at the second breakpoint
self.thread = lldbutil.get_one_thread_stopped_at_breakpoint(
self.process, self.breakpoint2
)
self.assertIsNotNone(
self.thread, "Expected one thread to be stopped at breakpoint 2"
)
self.finish_test()
@no_debug_info_test
def test_single_step(self):
"""Test that single step stops at the second breakpoint."""
self.prepare_test()
# Instruction step to the next instruction
# We haven't executed breakpoint2 yet, we're sitting at it now.
step_over = False
self.thread.StepInstruction(step_over)
step_over = False
self.thread.StepInstruction(step_over)
# We've now hit the breakpoint and this StepInstruction has
# been interrupted, it is still sitting on the thread plan stack.
self.assertState(self.process.GetState(), lldb.eStateStopped)
self.assertEqual(
self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(self.target),
self.bkpt_address.GetLoadAddress(self.target),
)
# One more instruction to complete the Step that was interrupted
# earlier.
self.thread.StepInstruction(step_over)
strm = lldb.SBStream()
self.thread.GetDescription(strm)
self.assertIn("instruction step into", strm.GetData())
self.assertIsNotNone(self.thread, "Expected to see that step-in had completed")
self.finish_test()
@no_debug_info_test
@skipIf(
oslist=["windows"],
archs=["x86_64"],
bugnumber="github.com/llvm/llvm-project/issues/138083",
)
def test_single_step_thread_specific(self):
"""Test that single step stops, even though the second breakpoint is not valid."""
self.prepare_test()
# Choose a thread other than the current one. A non-existing thread is
# fine.
thread_index = self.process.GetNumThreads() + 1
self.assertFalse(self.process.GetThreadAtIndex(thread_index).IsValid())
self.breakpoint2.SetThreadIndex(thread_index)
step_over = False
self.thread.StepInstruction(step_over)
self.assertState(self.process.GetState(), lldb.eStateStopped)
self.assertEqual(
self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(self.target),
self.bkpt_address.GetLoadAddress(self.target),
)
self.assertEqual(
self.thread.GetStopReason(),
lldb.eStopReasonPlanComplete,
"Stop reason should be 'plan complete'",
)
# Hit our second breakpoint
self.process.Continue()
self.finish_test()
|
