diff options
Diffstat (limited to 'packages/Python/lldbsuite/test/functionalities/longjmp')
3 files changed, 121 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/functionalities/longjmp/Makefile b/packages/Python/lldbsuite/test/functionalities/longjmp/Makefile new file mode 100644 index 000000000000..0d70f2595019 --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/longjmp/Makefile @@ -0,0 +1,5 @@ +LEVEL = ../../make + +C_SOURCES := main.c + +include $(LEVEL)/Makefile.rules diff --git a/packages/Python/lldbsuite/test/functionalities/longjmp/TestLongjmp.py b/packages/Python/lldbsuite/test/functionalities/longjmp/TestLongjmp.py new file mode 100644 index 000000000000..1316a01c924c --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/longjmp/TestLongjmp.py @@ -0,0 +1,85 @@ +""" +Test the use of setjmp/longjmp for non-local goto operations in a single-threaded inferior. +""" + +from __future__ import print_function + + + +import os +import lldb +import lldbsuite.test.lldbutil as lldbutil +from lldbsuite.test.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") + @expectedFailureWindows("llvm.org/pr24778") + def test_step_out(self): + """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out.""" + self.build() + 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") + @expectedFailureWindows("llvm.org/pr24778") + def test_step_over(self): + """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-over a longjmp.""" + self.build() + 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") + @expectedFailureWindows("llvm.org/pr24778") + def test_step_back_out(self): + """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out after thread step-in.""" + self.build() + 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() diff --git a/packages/Python/lldbsuite/test/functionalities/longjmp/main.c b/packages/Python/lldbsuite/test/functionalities/longjmp/main.c new file mode 100644 index 000000000000..3879311eb452 --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/longjmp/main.c @@ -0,0 +1,31 @@ +//===-- main.c --------------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +#include <setjmp.h> +#include <stdio.h> +#include <time.h> + +jmp_buf j; + +void do_jump(void) +{ + // We can't let the compiler know this will always happen or it might make + // optimizations that break our test. + if (!clock()) + longjmp(j, 1); // non-local goto +} + +int main (void) +{ + if (setjmp(j) == 0) + do_jump(); + else + return 0; // destination of longjmp + + return 1; +} |