lldb/test/API/symbol_ondemand/shared_library/TestSharedLibOnDemand.py

   1 """Test that types defined in shared libraries work correctly."""
   2
   3
   4 import lldb
   5 from lldbsuite.test.decorators import *
   6 from lldbsuite.test.lldbtest import *
   7 import lldbsuite.test.lldbutil as lldbutil
   8
   9
  10 class SharedLibTestCase(TestBase):
  11     def setUp(self):
  12         # Call super's setUp().
  13         TestBase.setUp(self)
  14         # Find the line number to break inside main().
  15         self.source = "shared.c"
  16         self.line = line_number(self.source, "// Set breakpoint 0 here.")
  17         self.shlib_names = ["foo"]
  18
  19     def common_setup(self):
  20         # Run in synchronous mode
  21         self.dbg.SetAsync(False)
  22         self.runCmd("settings set symbols.load-on-demand true")
  23
  24         # Create a target by the debugger.
  25         self.target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
  26         self.assertTrue(self.target, VALID_TARGET)
  27
  28         # Register our shared libraries for remote targets so they get
  29         # automatically uploaded
  30         self.environment = self.registerSharedLibrariesWithTarget(
  31             self.target, self.shlib_names
  32         )
  33
  34         ctx = self.platformContext
  35         self.shared_lib_name = ctx.shlib_prefix + "foo." + ctx.shlib_extension
  36
  37     @skipIfWindows
  38     def test_source_line_breakpoint(self):
  39         self.build()
  40         self.common_setup()
  41
  42         lldbutil.run_break_set_by_file_and_line(
  43             self, "foo.c", 4, num_expected_locations=1, loc_exact=True
  44         )
  45
  46         # Now launch the process, and do not stop at entry point.
  47         process = self.target.LaunchSimple(
  48             None, self.environment, self.get_process_working_directory()
  49         )
  50         self.assertTrue(process, PROCESS_IS_VALID)
  51
  52         # The stop reason of the thread should be breakpoint.
  53         self.expect(
  54             "thread list",
  55             STOPPED_DUE_TO_BREAKPOINT,
  56             substrs=["stopped", "stop reason = breakpoint"],
  57         )
  58         # The breakpoint should have a hit count of 1.
  59         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
  60
  61         thread = process.GetSelectedThread()
  62         stack_frames = lldbutil.get_stack_frames(thread)
  63         self.assertGreater(len(stack_frames), 2)
  64
  65         leaf_frame = stack_frames[0]
  66         self.assertEqual("foo.c", leaf_frame.GetLineEntry().GetFileSpec().GetFilename())
  67         self.assertEqual(4, leaf_frame.GetLineEntry().GetLine())
  68
  69         parent_frame = stack_frames[1]
  70         self.assertEqual(
  71             "shared.c", parent_frame.GetLineEntry().GetFileSpec().GetFilename()
  72         )
  73         self.assertEqual(7, parent_frame.GetLineEntry().GetLine())
  74
  75     @skipIfWindows
  76     def test_symbolic_breakpoint(self):
  77         self.build()
  78         self.common_setup()
  79
  80         lldbutil.run_break_set_by_symbol(
  81             self, "foo", sym_exact=True, num_expected_locations=1
  82         )
  83
  84         # Now launch the process, and do not stop at entry point.
  85         process = self.target.LaunchSimple(
  86             None, self.environment, self.get_process_working_directory()
  87         )
  88         self.assertTrue(process, PROCESS_IS_VALID)
  89
  90         # The stop reason of the thread should be breakpoint.
  91         self.expect(
  92             "thread list",
  93             STOPPED_DUE_TO_BREAKPOINT,
  94             substrs=["stopped", "stop reason = breakpoint"],
  95         )
  96         # The breakpoint should have a hit count of 1.
  97         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
  98
  99         thread = process.GetSelectedThread()
 100         stack_frames = lldbutil.get_stack_frames(thread)
 101         self.assertGreater(len(stack_frames), 2)
 102
 103         leaf_frame = stack_frames[0]
 104         self.assertEqual("foo.c", leaf_frame.GetLineEntry().GetFileSpec().GetFilename())
 105         self.assertEqual(4, leaf_frame.GetLineEntry().GetLine())
 106
 107         parent_frame = stack_frames[1]
 108         self.assertEqual(
 109             "shared.c", parent_frame.GetLineEntry().GetFileSpec().GetFilename()
 110         )
 111         self.assertEqual(7, parent_frame.GetLineEntry().GetLine())
 112
 113     @skipIfWindows
 114     def test_global_variable_hydration(self):
 115         self.build()
 116         self.common_setup()
 117
 118         lldbutil.run_break_set_by_file_and_line(
 119             self, self.source, self.line, num_expected_locations=1, loc_exact=True
 120         )
 121
 122         # Now launch the process, and do not stop at entry point.
 123         process = self.target.LaunchSimple(
 124             None, self.environment, self.get_process_working_directory()
 125         )
 126         self.assertTrue(process, PROCESS_IS_VALID)
 127
 128         # The stop reason of the thread should be breakpoint.
 129         self.expect(
 130             "thread list",
 131             STOPPED_DUE_TO_BREAKPOINT,
 132             substrs=["stopped", "stop reason = breakpoint"],
 133         )
 134
 135         # The breakpoint should have a hit count of 1.
 136         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
 137
 138         self.expect(
 139             "target variable --shlib a.out",
 140             "Breakpoint in a.out should have hydrated the debug info",
 141             substrs=["global_shared = 897"],
 142         )
 143
 144         self.expect(
 145             "target variable --shlib " + self.shared_lib_name,
 146             "shared library should not have debug info by default",
 147             matching=False,
 148             substrs=["global_foo"],
 149         )
 150
 151         self.expect(
 152             "target variable global_foo --shlib " + self.shared_lib_name,
 153             "Match global_foo in symbol table should hydrate debug info",
 154             matching=True,
 155             substrs=["global_foo = 321"],
 156         )