text: """Test aspects of lldb commands on universal binaries."""
  
  
  
  import unittest2
  import os
  import lldb
  from lldbsuite.test.decorators import *
  from lldbsuite.test.lldbtest import *
  from lldbsuite.test import lldbutil
  
  def haswellOrLater():
      features = subprocess.check_output(["sysctl", "machdep.cpu"])
      return "AVX2" in features.split()
  
  class UniversalTestCase(TestBase):
  
      NO_DEBUG_INFO_TESTCASE = True
      mydir = TestBase.compute_mydir(__file__)
  
      def setUp(self):
          # Call super's setUp().
          TestBase.setUp(self)
          # Find the line number to break inside main().
          self.line = line_number('main.c', '// Set break point at this line.')
  
      @add_test_categories(['pyapi'])
      @skipUnlessDarwin
      @unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in
                            ['x86_64'], "requires x86_64")
      @skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
      def test_sbdebugger_create_target_with_file_and_target_triple(self):
          """Test the SBDebugger.CreateTargetWithFileAndTargetTriple() API."""
          # Invoke the default build rule.
          self.build()
  
          # Note that "testit" is a universal binary.
          exe = self.getBuildArtifact("testit")
  
          # Create a target by the debugger.
          target = self.dbg.CreateTargetWithFileAndTargetTriple(
              exe, "x86_64-apple-macosx")
          self.assertTrue(target, VALID_TARGET)
          self.expect("image list -A -b", substrs=["x86_64 testit"])
  
          # Now launch the process, and do not stop at entry point.
          process = target.LaunchSimple(
              None, None, self.get_process_working_directory())
          self.assertTrue(process, PROCESS_IS_VALID)
  
      @skipUnlessDarwin
      @unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in
                            ['x86_64'], "requires x86_64")
      @skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
      def test_process_launch_for_universal(self):
          """Test process launch of a universal binary."""
          from lldbsuite.test.lldbutil import print_registers
  
          if not haswellOrLater():
              return
          
          # Invoke the default build rule.
          self.build()
  
          # Note that "testit" is a universal binary.
          exe = self.getBuildArtifact("testit")
  
          # By default, x86_64 is assumed if no architecture is specified.
          self.expect("file " + exe, CURRENT_EXECUTABLE_SET,
                      startstr="Current executable set to ",
                      substrs=["testit' (x86_64h)."])
  
          # Break inside the main.
          lldbutil.run_break_set_by_file_and_line(
              self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
  
          # We should be able to launch the x86_64h executable.
          self.runCmd("run", RUN_SUCCEEDED)
  
          # Check whether we have a x86_64h process launched.
          target = self.dbg.GetSelectedTarget()
          process = target.GetProcess()
          self.expect("image list -A -b", substrs=["x86_64h testit"])
          self.runCmd("continue")
  
          # Now specify x86_64 as the architecture for "testit".
          self.expect("file -a x86_64 " + exe, CURRENT_EXECUTABLE_SET,
                      startstr="Current executable set to ",
                      substrs=["testit' (x86_64)."])
  
          # Break inside the main.
          lldbutil.run_break_set_by_file_and_line(
              self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
  
          # We should be able to launch the x86_64 executable as well.
          self.runCmd("run", RUN_SUCCEEDED)
  
          # Check whether we have a x86_64 process launched.
          
          # FIXME: This wrong. We are expecting x86_64, but spawning a
          # new process currently doesn't allow specifying a *sub*-architecture.
          # <rdar://problem/46101466>
          self.expect("image list -A -b", substrs=["x86_64h testit"])
          self.runCmd("continue")
  
      @skipUnlessDarwin
      @unittest2.skipUnless(hasattr(os, "uname") and os.uname()[4] in
                            ['x86_64'], "requires x86_64")
      @skipIfDarwinEmbedded # this test file assumes we're targetting an x86 system
      def test_process_attach_with_wrong_arch(self):
          """Test that when we attach to a binary from the wrong fork of
              a universal binary, we fix up the ABI correctly."""
          if not haswellOrLater():
              return
  
          # Now keep the architecture at x86_64, but switch the binary
          # we launch to x86_64h, and make sure on attach we switch to
          # the correct architecture.
  
          # Invoke the default build rule.
          self.build()
  
          # Note that "testit" is a universal binary.
          exe = self.getBuildArtifact("testit")
  
          # Create a target by the debugger.
          target = self.dbg.CreateTargetWithFileAndTargetTriple(
              exe, "x86_64-apple-macosx")
          self.assertTrue(target, VALID_TARGET)
          self.expect("image list -A -b", substrs=["x86_64 testit"])
  
          bkpt = target.BreakpointCreateBySourceRegex(
              "sleep", lldb.SBFileSpec("main.c"))
          self.assertTrue(bkpt.IsValid(), "Valid breakpoint")
          self.assertTrue(
              bkpt.GetNumLocations() >= 1,
              "Our main breakpoint has locations.")
  
          popen = self.spawnSubprocess(exe, ["keep_waiting"])
          self.addTearDownHook(self.cleanupSubprocesses)
  
          error = lldb.SBError()
          empty_listener = lldb.SBListener()
          process = target.AttachToProcessWithID(
              empty_listener, popen.pid, error)
          self.assertTrue(error.Success(), "Attached to process.")
  
          self.expect("image list -A -b", substrs=["x86_64h testit"])
  
          # It may seem odd to check the number of frames, but the bug
          # that motivated this test was that we eventually fixed the
          # architecture, but we left the ABI set to the original value.
          # In that case, if you asked the process for its architecture,
          # it would look right, but since the ABI was wrong,
          # backtracing failed.
  
          threads = lldbutil.continue_to_breakpoint(process, bkpt)
          self.assertEquals(len(threads), 1)
          thread = threads[0]
          self.assertTrue(
              thread.GetNumFrames() > 1,
              "We were able to backtrace.")
  