lldb/test/API/functionalities/dyld-exec-linux/TestDyldExecLinux.py

   1 """
   2 Test that LLDB can launch a linux executable and then execs into the dynamic
   3 loader into this program again.
   4 """
   5
   6 import lldb
   7 import os
   8
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class TestLinux64ExecViaDynamicLoader(TestBase):
  15     NO_DEBUG_INFO_TESTCASE = True
  16
  17     @skipIfXmlSupportMissing
  18     @skipIf(oslist=no_match(["linux"]))
  19     def test_with_svr4(self):
  20         self.runCmd("settings set plugin.process.gdb-remote.use-libraries-svr4 true")
  21         self._test()
  22
  23     @skipIf(oslist=no_match(["linux"]))
  24     def test_without_svr4(self):
  25         self.runCmd("settings set plugin.process.gdb-remote.use-libraries-svr4 false")
  26         self._test()
  27
  28     def _test(self):
  29         self.build()
  30
  31         # Extracts path of the interpreter.
  32         exe = self.getBuildArtifact("a.out")
  33
  34         spec = lldb.SBModuleSpec()
  35         spec.SetFileSpec(lldb.SBFileSpec(exe))
  36         interp_section = lldb.SBModule(spec).FindSection(".interp")
  37         if not interp_section:
  38             return
  39         section_data = interp_section.GetSectionData()
  40         error = lldb.SBError()
  41         dyld_path = section_data.GetString(error, 0)
  42         if error.Fail():
  43             return
  44
  45         target = self.dbg.CreateTarget(exe)
  46         self.assertTrue(target, VALID_TARGET)
  47
  48         # Set a breakpoint in the main function that will get hit after the
  49         # program exec's via the dynamic loader. The breakpoint will only get
  50         # hit if we can successfully read the shared library lists in the
  51         # DynamicLoaderPOSIXDYLD.cpp when we exec into the dynamic loader.
  52         breakpoint_main = target.BreakpointCreateBySourceRegex(
  53             "// Break here", lldb.SBFileSpec("main.cpp")
  54         )
  55         # Setup our launch info to supply the dynamic loader path to the
  56         # program so it gets two args:
  57         # - path to a.out
  58         # - path to dynamic loader
  59         launch_info = lldb.SBLaunchInfo([dyld_path])
  60         error = lldb.SBError()
  61         process = target.Launch(launch_info, error)
  62         self.assertSuccess(error)
  63
  64         threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonExec)
  65         self.assertEqual(len(threads), 1, "We got a thread stopped for exec.")
  66
  67         process.Continue()
  68
  69         # Stopped on main here.
  70         self.assertState(process.GetState(), lldb.eStateStopped)
  71         thread = process.GetSelectedThread()
  72         self.assertIn("main", thread.GetFrameAtIndex(0).GetDisplayFunctionName())