1 """ 2 Test the use of setjmp/longjmp for non-local goto operations in a single-threaded inferior. 3 """ 4 5 import os 6 import unittest2 7 import lldb 8 import lldbutil 9 from lldbtest import * 10 11 class LongjmpTestCase(TestBase): 12 13 mydir = os.path.join("functionalities", "longjmp") 14 15 def setUp(self): 16 TestBase.setUp(self) 17 18 @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp 19 def test_step_out(self): 20 """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out.""" 21 self.buildDefault() 22 self.step_out() 23 24 @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp 25 def test_step_over(self): 26 """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-over a longjmp.""" 27 self.buildDefault() 28 self.step_over() 29 30 @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp 31 def test_step_back_out(self): 32 """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out after thread step-in.""" 33 self.buildDefault() 34 self.step_back_out() 35 36 def start_test(self, symbol): 37 exe = os.path.join(os.getcwd(), "a.out") 38 39 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) 40 41 # Break in main(). 42 lldbutil.run_break_set_by_symbol (self, symbol, num_expected_locations=-1) 43 44 self.runCmd("run", RUN_SUCCEEDED) 45 46 # The stop reason of the thread should be breakpoint. 47 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 48 substrs = ['stopped', 'stop reason = breakpoint']) 49 50 def check_status(self): 51 # Note: Depending on the generated mapping of DWARF to assembly, 52 # the process may have stopped or exited. 53 self.expect("process status", PROCESS_STOPPED, 54 patterns = ['Process .* exited with status = 0']) 55 56 def step_out(self): 57 self.start_test("do_jump") 58 self.runCmd("thread step-out", RUN_SUCCEEDED) 59 self.check_status() 60 61 def step_over(self): 62 self.start_test("do_jump") 63 self.runCmd("thread step-over", RUN_SUCCEEDED) 64 self.runCmd("thread step-over", RUN_SUCCEEDED) 65 self.check_status() 66 67 def step_back_out(self): 68 self.start_test("main") 69 70 self.runCmd("thread step-over", RUN_SUCCEEDED) 71 self.runCmd("thread step-in", RUN_SUCCEEDED) 72 self.runCmd("thread step-out", RUN_SUCCEEDED) 73 self.check_status() 74 75 if __name__ == '__main__': 76 import atexit 77 lldb.SBDebugger.Initialize() 78 atexit.register(lambda: lldb.SBDebugger.Terminate()) 79 unittest2.main() 80
