""" Test breakpoint conditions with 'breakpoint modify -c id'. """ from __future__ import print_function import os, time import re import lldb import lldbsuite.test.lldbutil as lldbutil from lldbsuite.test.lldbtest import * class BreakpointConditionsTestCase(TestBase): mydir = TestBase.compute_mydir(__file__) @skipIfWindows # Requires EE to support COFF on Windows (http://llvm.org/pr22232) def test_breakpoint_condition_and_run_command(self): """Exercise breakpoint condition with 'breakpoint modify -c id'.""" self.build() self.breakpoint_conditions() @skipIfWindows # Requires EE to support COFF on Windows (http://llvm.org/pr22232) def test_breakpoint_condition_inline_and_run_command(self): """Exercise breakpoint condition inline with 'breakpoint set'.""" self.build() self.breakpoint_conditions(inline=True) @skipIfWindows # Requires EE to support COFF on Windows (http://llvm.org/pr22232) @add_test_categories(['pyapi']) def test_breakpoint_condition_and_python_api(self): """Use Python APIs to set breakpoint conditions.""" self.build() self.breakpoint_conditions_python() def setUp(self): # Call super's setUp(). TestBase.setUp(self) # Find the line number to of function 'c'. self.line1 = line_number('main.c', '// Find the line number of function "c" here.') self.line2 = line_number('main.c', "// Find the line number of c's parent call here.") def breakpoint_conditions(self, inline=False): """Exercise breakpoint condition with 'breakpoint modify -c id'.""" exe = os.path.join(os.getcwd(), "a.out") self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) if inline: # Create a breakpoint by function name 'c' and set the condition. lldbutil.run_break_set_by_symbol (self, "c", extra_options="-c 'val == 3'", num_expected_locations=1, sym_exact=True) else: # Create a breakpoint by function name 'c'. lldbutil.run_break_set_by_symbol (self, "c", num_expected_locations=1, sym_exact=True) # And set a condition on the breakpoint to stop on when 'val == 3'. self.runCmd("breakpoint modify -c 'val == 3' 1") # Now run the program. self.runCmd("run", RUN_SUCCEEDED) # The process should be stopped at this point. self.expect("process status", PROCESS_STOPPED, patterns = ['Process .* stopped']) # 'frame variable --show-types val' should return 3 due to breakpoint condition. self.expect("frame variable --show-types val", VARIABLES_DISPLAYED_CORRECTLY, startstr = '(int) val = 3') # Also check the hit count, which should be 3, by design. self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, substrs = ["resolved = 1", "Condition: val == 3", "hit count = 1"]) # The frame #0 should correspond to main.c:36, the executable statement # in function name 'c'. And the parent frame should point to main.c:24. self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT_CONDITION, #substrs = ["stop reason = breakpoint"], patterns = ["frame #0.*main.c:%d" % self.line1, "frame #1.*main.c:%d" % self.line2]) # Test that "breakpoint modify -c ''" clears the condition for the last # created breakpoint, so that when the breakpoint hits, val == 1. self.runCmd("process kill") self.runCmd("breakpoint modify -c ''") self.expect("breakpoint list -f", BREAKPOINT_STATE_CORRECT, matching=False, substrs = ["Condition:"]) # Now run the program again. self.runCmd("run", RUN_SUCCEEDED) # The process should be stopped at this point. self.expect("process status", PROCESS_STOPPED, patterns = ['Process .* stopped']) # 'frame variable --show-types val' should return 1 since it is the first breakpoint hit. self.expect("frame variable --show-types val", VARIABLES_DISPLAYED_CORRECTLY, startstr = '(int) val = 1') self.runCmd("process kill") self.runCmd("breakpoint disable") self.runCmd("breakpoint set -p Loop") arch = self.getArchitecture() if arch in ['x86_64', 'i386']: self.runCmd("breakpoint modify -c ($eax&&i)") elif arch in ['aarch64']: self.runCmd("breakpoint modify -c ($x1&&i)") elif arch in ['arm']: self.runCmd("breakpoint modify -c ($r0&&i)") elif re.match("mips",arch): self.runCmd("breakpoint modify -c ($r2&&i)") self.runCmd("run") self.expect("process status", PROCESS_STOPPED, patterns = ['Process .* stopped']) self.runCmd("continue") self.expect("process status", PROCESS_EXITED, patterns = ['Process .* exited']) def breakpoint_conditions_python(self): """Use Python APIs to set breakpoint conditions.""" 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) # We didn't associate a thread index with the breakpoint, so it should be invalid. self.assertTrue(breakpoint.GetThreadIndex() == lldb.UINT32_MAX, "The thread index should be invalid") # The thread name should be invalid, too. self.assertTrue(breakpoint.GetThreadName() is None, "The thread name should be invalid") # Let's set the thread index for this breakpoint and verify that it is, # indeed, being set correctly. breakpoint.SetThreadIndex(1) # There's only one thread for the process. self.assertTrue(breakpoint.GetThreadIndex() == 1, "The thread index has been set correctly") # Get the breakpoint location from breakpoint after we verified that, # indeed, it has one location. location = breakpoint.GetLocationAtIndex(0) self.assertTrue(location and location.IsEnabled(), VALID_BREAKPOINT_LOCATION) # Set the condition on the breakpoint location. location.SetCondition('val == 3') self.expect(location.GetCondition(), exe=False, startstr = 'val == 3') # Now launch the process, and do not stop at entry point. process = target.LaunchSimple (None, None, self.get_process_working_directory()) self.assertTrue(process, PROCESS_IS_VALID) # Frame #0 should be on self.line1 and the break condition should hold. from lldbsuite.test.lldbutil import get_stopped_thread thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint) self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition") frame0 = thread.GetFrameAtIndex(0) var = frame0.FindValue('val', lldb.eValueTypeVariableArgument) self.assertTrue(frame0.GetLineEntry().GetLine() == self.line1 and var.GetValue() == '3') # The hit count for the breakpoint should be 1. self.assertTrue(breakpoint.GetHitCount() == 1) process.Continue()