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"""
Test that we handle breakpoints on consecutive instructions correctly.
"""
from __future__ import print_function
import unittest2
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class ConsecutiveBreakpointsTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def prepare_test(self):
self.build()
exe = os.path.join(os.getcwd(), "a.out")
# Create a target by the debugger.
self.target = self.dbg.CreateTarget(exe)
self.assertTrue(self.target, VALID_TARGET)
breakpoint1 = self.target.BreakpointCreateBySourceRegex(
"Set breakpoint here", lldb.SBFileSpec("main.cpp"))
self.assertTrue(
breakpoint1 and breakpoint1.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
self.process = self.target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertIsNotNone(self.process, PROCESS_IS_VALID)
# We should be stopped at the first breakpoint
self.thread = lldbutil.get_one_thread_stopped_at_breakpoint(
self.process, breakpoint1)
self.assertIsNotNone(
self.thread,
"Expected one thread to be stopped at breakpoint 1")
# Set breakpoint to the next instruction
frame = self.thread.GetFrameAtIndex(0)
address = frame.GetPCAddress()
instructions = self.target.ReadInstructions(address, 2)
self.assertTrue(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.assertEquals(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.assertEquals(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()
step_over = False
self.thread.StepInstruction(step_over)
self.assertEquals(self.process.GetState(), lldb.eStateStopped)
self.assertEquals(
self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(
self.target), self.bkpt_address.GetLoadAddress(
self.target))
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_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.assertEquals(self.process.GetState(), lldb.eStateStopped)
self.assertEquals(
self.thread.GetFrameAtIndex(0).GetPCAddress().GetLoadAddress(
self.target), self.bkpt_address.GetLoadAddress(
self.target))
self.assertEquals(
self.thread.GetStopReason(),
lldb.eStopReasonPlanComplete,
"Stop reason should be 'plan complete'")
self.finish_test()
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