lldb/test/API/linux/aarch64/non_address_bit_code_break/TestAArch64LinuxNonAddressBitCodeBreak.py

   1 """
   2 Test that "breakpoint set -a" uses the ABI plugin to remove non-address bits
   3 before attempting to set a breakpoint.
   4 """
   5
   6 import lldb
   7 from lldbsuite.test.decorators import *
   8 from lldbsuite.test.lldbtest import *
   9 from lldbsuite.test import lldbutil
  10
  11
  12 class AArch64LinuxNonAddressBitCodeBreak(TestBase):
  13     NO_DEBUG_INFO_TESTCASE = True
  14
  15     def do_tagged_break(self, hardware):
  16         if not self.isAArch64PAuth():
  17             self.skipTest("Target must support pointer authentication.")
  18
  19         self.build()
  20         self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  21
  22         lldbutil.run_break_set_by_file_and_line(
  23             self,
  24             "main.c",
  25             line_number("main.c", "// Set break point at this line."),
  26             num_expected_locations=1,
  27         )
  28
  29         self.runCmd("run", RUN_SUCCEEDED)
  30
  31         if self.process().GetState() == lldb.eStateExited:
  32             self.fail("Test program failed to run.")
  33
  34         self.expect(
  35             "thread list",
  36             STOPPED_DUE_TO_BREAKPOINT,
  37             substrs=["stopped", "stop reason = breakpoint"],
  38         )
  39
  40         cmd = "breakpoint set -a fnptr"
  41         # LLDB only has the option to force hardware break, not software.
  42         # It prefers sofware break when it can and this will be one of those cases.
  43         if hardware:
  44             cmd += " --hardware"
  45         self.expect(cmd)
  46
  47         self.runCmd("continue")
  48         self.assertEqual(self.process().GetState(), lldb.eStateStopped)
  49         self.expect(
  50             "thread list",
  51             STOPPED_DUE_TO_BREAKPOINT,
  52             substrs=["stopped", "`foo at main.c", "stop reason = breakpoint"],
  53         )
  54
  55     # AArch64 Linux always enables the top byte ignore feature
  56     @skipUnlessArch("aarch64")
  57     @skipUnlessPlatform(["linux"])
  58     def test_software_break(self):
  59         self.do_tagged_break(False)
  60
  61     @skipUnlessArch("aarch64")
  62     @skipUnlessPlatform(["linux"])
  63     def test_hardware_break(self):
  64         self.do_tagged_break(True)