1"""
2Test that we read the function starts section.
3"""
4
5
6
7import lldb
8from lldbsuite.test.decorators import *
9from lldbsuite.test.lldbtest import *
10from lldbsuite.test import lldbutil
11
12exe_name = "StripMe"  # Must match Makefile
13
14class FunctionStartsTestCase(TestBase):
15
16    mydir = TestBase.compute_mydir(__file__)
17
18    NO_DEBUG_INFO_TESTCASE = True
19
20    @skipIfRemote
21    @skipUnlessDarwin
22    def test_function_starts_binary(self):
23        """Test that we make synthetic symbols when we have the binary."""
24        self.build(dictionary={'CODESIGN': ''}) # Binary is getting stripped later.
25        self.do_function_starts(False)
26
27    @skipIfRemote
28    @skipUnlessDarwin
29    def test_function_starts_no_binary(self):
30        """Test that we make synthetic symbols when we don't have the binary"""
31        self.build(dictionary={'CODESIGN': ''}) # Binary is getting stripped later.
32        self.do_function_starts(True)
33
34    def do_function_starts(self, in_memory):
35        """Run the binary, stop at our unstripped function,
36           make sure the caller has synthetic symbols"""
37
38        exe = os.path.realpath(self.getBuildArtifact(exe_name))
39        # Now strip the binary, but leave externals so we can break on dont_strip_me.
40        self.runBuildCommand(["strip", "-u", "-x", "-S", exe])
41
42        # Use a file as a synchronization point between test and inferior.
43        pid_file_path = lldbutil.append_to_process_working_directory(self,
44            "token_pid_%d" % (int(os.getpid())))
45        self.addTearDownHook(
46            lambda: self.run_platform_command(
47                "rm %s" %
48                (pid_file_path)))
49
50        popen = self.spawnSubprocess(exe, [pid_file_path])
51
52        # Wait until process has fully started up.
53        pid = lldbutil.wait_for_file_on_target(self, pid_file_path)
54
55        if in_memory:
56          remove_file(exe)
57
58        target = self.dbg.CreateTarget(None)
59        self.assertTrue(target.IsValid(), "Got a vaid empty target.")
60        error = lldb.SBError()
61        attach_info = lldb.SBAttachInfo()
62        attach_info.SetProcessID(popen.pid)
63        attach_info.SetIgnoreExisting(False)
64        process = target.Attach(attach_info, error)
65        self.assertSuccess(error, "Didn't attach successfully to %d"%(popen.pid))
66
67        bkpt = target.BreakpointCreateByName("dont_strip_me", exe)
68        self.assertTrue(bkpt.GetNumLocations() > 0, "Didn't set the dont_strip_me bkpt.")
69
70        threads = lldbutil.continue_to_breakpoint(process, bkpt)
71        self.assertEqual(len(threads), 1, "Didn't hit my breakpoint.")
72
73        # Our caller frame should have been stripped.  Make sure we made a synthetic symbol
74        # for it:
75        thread = threads[0]
76        self.assertTrue(thread.num_frames > 1, "Couldn't backtrace.")
77        name = thread.frame[1].GetFunctionName()
78        self.assertTrue(name.startswith("___lldb_unnamed_symbol"))
79
80
81
82