| """ |
| Test lldb's ability to read and write the AArch64 TLS register tpidr. |
| """ |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class AArch64LinuxTLSRegister(TestBase): |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| def check_tpidr(self): |
| regs = self.thread().GetSelectedFrame().GetRegisters() |
| tls_regs = regs.GetFirstValueByName("Thread Local Storage Registers") |
| self.assertTrue(tls_regs.IsValid(), "No TLS registers found.") |
| tpidr = tls_regs.GetChildMemberWithName("tpidr") |
| self.assertTrue(tpidr.IsValid(), "No tpidr register found.") |
| |
| self.assertEqual(tpidr.GetValueAsUnsigned(), 0x1122334455667788) |
| |
| @skipUnlessArch("aarch64") |
| @skipUnlessPlatform(["linux"]) |
| def test_tls(self): |
| 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, |
| ) |
| |
| lldbutil.run_break_set_by_file_and_line( |
| self, |
| "main.c", |
| line_number("main.c", "// Set break point 2 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"], |
| ) |
| |
| # Since we can't predict what the value will be, the program has set |
| # a target value for us to find. |
| self.check_tpidr() |
| |
| # It should be saved/restored before/after an expression. |
| self.runCmd("expression expr_func()") |
| self.check_tpidr() |
| |
| # Set our own value for the program to find. |
| self.expect("register write tpidr 0x{:x}".format(0x8877665544332211)) |
| self.expect("continue") |
| |
| self.expect( |
| "thread list", |
| STOPPED_DUE_TO_BREAKPOINT, |
| substrs=["stopped", "stop reason = breakpoint"], |
| ) |
| |
| self.expect("p tpidr_was_set", substrs=["true"]) |
