lldb/test/API/linux/aarch64/mte_memory_region/TestAArch64LinuxMTEMemoryRegion.py

   1 """
   2 Test that "memory region" command can show memory tagged regions
   3 on AArch64 Linux.
   4 """
   5
   6
   7 import lldb
   8 from lldbsuite.test.decorators import *
   9 from lldbsuite.test.lldbtest import *
  10 from lldbsuite.test import lldbutil
  11
  12
  13 class AArch64LinuxMTEMemoryRegionTestCase(TestBase):
  14     NO_DEBUG_INFO_TESTCASE = True
  15
  16     @skipUnlessArch("aarch64")
  17     @skipUnlessPlatform(["linux"])
  18     @skipUnlessAArch64MTELinuxCompiler
  19     def test_mte_regions(self):
  20         if not self.isAArch64MTE():
  21             self.skipTest("Target must support MTE.")
  22
  23         # This test assumes that we have /proc/<PID>/smaps files
  24         # that include "VmFlags:" lines.
  25         # AArch64 kernel config defaults to enabling smaps with
  26         # PROC_PAGE_MONITOR and "VmFlags" was added in kernel 3.8,
  27         # before MTE was supported at all.
  28
  29         self.build()
  30         self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
  31
  32         lldbutil.run_break_set_by_file_and_line(
  33             self,
  34             "main.c",
  35             line_number("main.c", "// Set break point at this line."),
  36             num_expected_locations=1,
  37         )
  38
  39         self.runCmd("run", RUN_SUCCEEDED)
  40
  41         if self.process().GetState() == lldb.eStateExited:
  42             self.fail("Test program failed to run.")
  43
  44         self.expect(
  45             "thread list",
  46             STOPPED_DUE_TO_BREAKPOINT,
  47             substrs=["stopped", "stop reason = breakpoint"],
  48         )
  49
  50         substrs = ["memory tagging: enabled"]
  51         # The new page will be tagged
  52         self.expect("memory region the_page", substrs=substrs)
  53         # Code page will not be
  54         self.expect("memory region main", substrs=substrs, matching=False)