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"""
Test that LLDB can launch a linux executable and then execs into the dynamic
loader into this program again.
"""
import lldb
import os
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestLinux64ExecViaDynamicLoader(TestBase):
NO_DEBUG_INFO_TESTCASE = True
@skipIfXmlSupportMissing
@skipIf(oslist=no_match(["linux"]))
def test_with_svr4(self):
self.runCmd("settings set plugin.process.gdb-remote.use-libraries-svr4 true")
self._test()
@skipIf(oslist=no_match(["linux"]))
def test_without_svr4(self):
self.runCmd("settings set plugin.process.gdb-remote.use-libraries-svr4 false")
self._test()
def _test(self):
self.build()
# Extracts path of the interpreter.
exe = self.getBuildArtifact("a.out")
spec = lldb.SBModuleSpec()
spec.SetFileSpec(lldb.SBFileSpec(exe))
interp_section = lldb.SBModule(spec).FindSection(".interp")
if not interp_section:
return
section_data = interp_section.GetSectionData()
error = lldb.SBError()
dyld_path = section_data.GetString(error, 0)
if error.Fail():
return
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Set a breakpoint in the main function that will get hit after the
# program exec's via the dynamic loader. The breakpoint will only get
# hit if we can successfully read the shared library lists in the
# DynamicLoaderPOSIXDYLD.cpp when we exec into the dynamic loader.
breakpoint_main = target.BreakpointCreateBySourceRegex(
"// Break here", lldb.SBFileSpec("main.cpp")
)
# Setup our launch info to supply the dynamic loader path to the
# program so it gets two args:
# - path to a.out
# - path to dynamic loader
launch_info = lldb.SBLaunchInfo([dyld_path])
error = lldb.SBError()
process = target.Launch(launch_info, error)
self.assertSuccess(error)
threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonExec)
self.assertEqual(len(threads), 1, "We got a thread stopped for exec.")
process.Continue()
# Stopped on main here.
self.assertState(process.GetState(), lldb.eStateStopped)
thread = process.GetSelectedThread()
self.assertIn("main", thread.GetFrameAtIndex(0).GetDisplayFunctionName())
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