artulab.com Git - openbsd/blob

   1 """
   2 Test watchpoint slots we should not be able to install multiple watchpoints
   3 within same word boundary. We should be able to install individual watchpoints
   4 on any of the bytes, half-word, or word. This is only for ARM/AArch64 targets.
   5 """
   6
   7
   8 import lldb
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class WatchpointSlotsTestCase(TestBase):
  15     NO_DEBUG_INFO_TESTCASE = True
  16
  17     mydir = TestBase.compute_mydir(__file__)
  18
  19     def setUp(self):
  20         # Call super's setUp().
  21         TestBase.setUp(self)
  22
  23         # Source filename.
  24         self.source = 'main.c'
  25
  26         # Output filename.
  27         self.exe_name = self.getBuildArtifact("a.out")
  28         self.d = {'C_SOURCES': self.source, 'EXE': self.exe_name}
  29
  30     # This is a arm and aarch64 specific test case. No other architectures tested.
  31     @skipIf(archs=no_match(['arm', 'aarch64']))
  32     def test_multiple_watchpoints_on_same_word(self):
  33
  34         self.build(dictionary=self.d)
  35         self.setTearDownCleanup(dictionary=self.d)
  36
  37         exe = self.getBuildArtifact(self.exe_name)
  38         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  39
  40         # Detect line number after which we are going to increment arrayName.
  41         loc_line = line_number('main.c', '// About to write byteArray')
  42
  43         # Set a breakpoint on the line detected above.
  44         lldbutil.run_break_set_by_file_and_line(
  45             self, "main.c", loc_line, num_expected_locations=1, loc_exact=True)
  46
  47         # Run the program.
  48         self.runCmd("run", RUN_SUCCEEDED)
  49
  50         # The stop reason of the thread should be breakpoint.
  51         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
  52                      substrs=['stopped', 'stop reason = breakpoint'])
  53
  54         # Delete breakpoint we just hit.
  55         self.expect("breakpoint delete 1", substrs=['1 breakpoints deleted'])
  56
  57         # Set a watchpoint at byteArray[0]
  58         self.expect("watchpoint set variable byteArray[0]", WATCHPOINT_CREATED,
  59                     substrs=['Watchpoint created','size = 1'])
  60
  61         # Use the '-v' option to do verbose listing of the watchpoint.
  62         # The hit count should be 0 initially.
  63         self.expect("watchpoint list -v 1", substrs=['hit_count = 0'])
  64
  65         # debugserver on ios doesn't give an error, it creates another watchpoint,
  66         # only expect errors on non-darwin platforms.
  67         if not self.platformIsDarwin():
  68             # Try setting a watchpoint at byteArray[1]
  69             self.expect("watchpoint set variable byteArray[1]", error=True,
  70                         substrs=['Watchpoint creation failed'])
  71
  72         self.runCmd("process continue")
  73
  74         # We should be stopped due to the watchpoint.
  75         # The stop reason of the thread should be watchpoint.
  76         self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT,
  77                     substrs=['stopped', 'stop reason = watchpoint 1'])
  78
  79         # Delete the watchpoint we hit above successfully.
  80         self.expect("watchpoint delete 1", substrs=['1 watchpoints deleted'])
  81
  82         # Set a watchpoint at byteArray[3]
  83         self.expect("watchpoint set variable byteArray[3]", WATCHPOINT_CREATED,
  84                     substrs=['Watchpoint created','size = 1'])
  85
  86         # Resume inferior.
  87         self.runCmd("process continue")
  88
  89         # We should be stopped due to the watchpoint.
  90         # The stop reason of the thread should be watchpoint.
  91         if self.platformIsDarwin():
  92             # On darwin we'll hit byteArray[3] which is watchpoint 2
  93             self.expect("thread list -v", STOPPED_DUE_TO_WATCHPOINT,
  94                         substrs=['stopped', 'stop reason = watchpoint 2'])
  95         else:
  96             self.expect("thread list -v", STOPPED_DUE_TO_WATCHPOINT,
  97                         substrs=['stopped', 'stop reason = watchpoint 3'])
  98
  99         # Resume inferior.
 100         self.runCmd("process continue")