packages/Python/lldbsuite/test/functionalities/longjmp/TestLongjmp.py

   1 """
   2 Test the use of setjmp/longjmp for non-local goto operations in a single-threaded inferior.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import os
   9 import lldb
  10 from lldbsuite.test.decorators import *
  11 from lldbsuite.test.lldbtest import *
  12 from lldbsuite.test import lldbutil
  13
  14
  15 class LongjmpTestCase(TestBase):
  16
  17     mydir = TestBase.compute_mydir(__file__)
  18
  19     def setUp(self):
  20         TestBase.setUp(self)
  21
  22     @skipIfDarwin  # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
  23     @skipIfFreeBSD  # llvm.org/pr17214
  24     @expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
  25     @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
  26     def test_step_out(self):
  27         """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out."""
  28         self.build()
  29         self.step_out()
  30
  31     @skipIfDarwin  # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
  32     @skipIfFreeBSD  # llvm.org/pr17214
  33     @expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
  34     @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
  35     def test_step_over(self):
  36         """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-over a longjmp."""
  37         self.build()
  38         self.step_over()
  39
  40     @skipIfDarwin  # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
  41     @skipIfFreeBSD  # llvm.org/pr17214
  42     @expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
  43     @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
  44     def test_step_back_out(self):
  45         """Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out after thread step-in."""
  46         self.build()
  47         self.step_back_out()
  48
  49     def start_test(self, symbol):
  50         exe = os.path.join(os.getcwd(), "a.out")
  51
  52         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  53
  54         # Break in main().
  55         lldbutil.run_break_set_by_symbol(
  56             self, symbol, num_expected_locations=-1)
  57
  58         self.runCmd("run", RUN_SUCCEEDED)
  59
  60         # The stop reason of the thread should be breakpoint.
  61         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
  62                     substrs=['stopped', 'stop reason = breakpoint'])
  63
  64     def check_status(self):
  65         # Note: Depending on the generated mapping of DWARF to assembly,
  66         # the process may have stopped or exited.
  67         self.expect("process status", PROCESS_STOPPED,
  68                     patterns=['Process .* exited with status = 0'])
  69
  70     def step_out(self):
  71         self.start_test("do_jump")
  72         self.runCmd("thread step-out", RUN_SUCCEEDED)
  73         self.check_status()
  74
  75     def step_over(self):
  76         self.start_test("do_jump")
  77         self.runCmd("thread step-over", RUN_SUCCEEDED)
  78         self.runCmd("thread step-over", RUN_SUCCEEDED)
  79         self.check_status()
  80
  81     def step_back_out(self):
  82         self.start_test("main")
  83
  84         self.runCmd("thread step-over", RUN_SUCCEEDED)
  85         self.runCmd("thread step-in", RUN_SUCCEEDED)
  86         self.runCmd("thread step-out", RUN_SUCCEEDED)
  87         self.check_status()