| """ |
| Test the use of setjmp/longjmp for non-local goto operations in a single-threaded inferior. |
| """ |
| |
| import os |
| import unittest2 |
| import lldb |
| import lldbutil |
| from lldbtest import * |
| |
| class LongjmpTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| def setUp(self): |
| TestBase.setUp(self) |
| |
| @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp |
| @skipIfFreeBSD # llvm.org/pr17214 |
| @expectedFailureLinux("llvm.org/pr20231") |
| def test_step_out(self): |
| """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out.""" |
| self.buildDefault() |
| self.step_out() |
| |
| @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp |
| @skipIfFreeBSD # llvm.org/pr17214 |
| @expectedFailureLinux("llvm.org/pr20231") |
| def test_step_over(self): |
| """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-over a longjmp.""" |
| self.buildDefault() |
| self.step_over() |
| |
| @skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp |
| @skipIfFreeBSD # llvm.org/pr17214 |
| @expectedFailureLinux("llvm.org/pr20231") |
| def test_step_back_out(self): |
| """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out after thread step-in.""" |
| self.buildDefault() |
| self.step_back_out() |
| |
| def start_test(self, symbol): |
| exe = os.path.join(os.getcwd(), "a.out") |
| |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # Break in main(). |
| lldbutil.run_break_set_by_symbol (self, symbol, num_expected_locations=-1) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs = ['stopped', 'stop reason = breakpoint']) |
| |
| def check_status(self): |
| # Note: Depending on the generated mapping of DWARF to assembly, |
| # the process may have stopped or exited. |
| self.expect("process status", PROCESS_STOPPED, |
| patterns = ['Process .* exited with status = 0']) |
| |
| def step_out(self): |
| self.start_test("do_jump") |
| self.runCmd("thread step-out", RUN_SUCCEEDED) |
| self.check_status() |
| |
| def step_over(self): |
| self.start_test("do_jump") |
| self.runCmd("thread step-over", RUN_SUCCEEDED) |
| self.runCmd("thread step-over", RUN_SUCCEEDED) |
| self.check_status() |
| |
| def step_back_out(self): |
| self.start_test("main") |
| |
| self.runCmd("thread step-over", RUN_SUCCEEDED) |
| self.runCmd("thread step-in", RUN_SUCCEEDED) |
| self.runCmd("thread step-out", RUN_SUCCEEDED) |
| self.check_status() |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
