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"""
Test that "memory region" command can show memory tagged regions
on AArch64 Linux.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class AArch64LinuxMTEMemoryRegionTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
NO_DEBUG_INFO_TESTCASE = True
@skipUnlessArch("aarch64")
@skipUnlessPlatform(["linux"])
@skipUnlessAArch64MTELinuxCompiler
def test_mte_regions(self):
if not self.isAArch64MTE():
self.skipTest('Target must support MTE.')
# This test assumes that we have /proc/<PID>/smaps files
# that include "VmFlags:" lines.
# AArch64 kernel config defaults to enabling smaps with
# PROC_PAGE_MONITOR and "VmFlags" was added in kernel 3.8,
# before MTE was supported at all.
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(self, "main.c",
line_number('main.c', '// Set break point at this line.'),
num_expected_locations=1)
self.runCmd("run", RUN_SUCCEEDED)
if self.process().GetState() == lldb.eStateExited:
self.fail("Test program failed to run.")
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
substrs = ["memory tagging: enabled"]
# The new page will be tagged
self.expect("memory region the_page", substrs=substrs)
# Code page will not be
self.expect("memory region main", substrs=substrs, matching=False)
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