| """ |
| Test basics of a mini dump taken of a 32-bit process running in WoW64 |
| |
| WoW64 is the subsystem that lets 32-bit processes run in 64-bit Windows. If you |
| capture a mini dump of a process running under WoW64 with a 64-bit debugger, you |
| end up with a dump of the WoW64 layer. In that case, LLDB must do extra work to |
| get the 32-bit register contexts. |
| """ |
| |
| from __future__ import print_function |
| from six import iteritems |
| |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class Wow64MiniDumpTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| NO_DEBUG_INFO_TESTCASE = True |
| |
| def test_wow64_mini_dump(self): |
| """Test that lldb can read the process information from the minidump.""" |
| # target create -c fizzbuzz_wow64.dmp |
| target = self.dbg.CreateTarget("") |
| process = target.LoadCore("fizzbuzz_wow64.dmp") |
| self.assertTrue(process, PROCESS_IS_VALID) |
| self.assertEqual(process.GetNumThreads(), 1) |
| self.assertEqual(process.GetProcessID(), 0x1E9C) |
| |
| def test_thread_info_in_wow64_mini_dump(self): |
| """Test that lldb can read the thread information from the minidump.""" |
| # target create -c fizzbuzz_wow64.dmp |
| target = self.dbg.CreateTarget("") |
| process = target.LoadCore("fizzbuzz_wow64.dmp") |
| # This process crashed due to an access violation (0xc0000005), but the |
| # minidump doesn't have an exception record--perhaps the crash handler |
| # ate it. |
| # TODO: See if we can recover the exception information from the TEB, |
| # which, according to Windbg, has a pointer to an exception list. |
| |
| # In the dump, none of the threads are stopped, so we cannot use |
| # lldbutil.get_stopped_thread. |
| thread = process.GetThreadAtIndex(0) |
| self.assertEqual(thread.GetStopReason(), lldb.eStopReasonNone) |
| |
| def test_stack_info_in_wow64_mini_dump(self): |
| """Test that we can see a trivial stack in a VS-generate mini dump.""" |
| # target create -c fizzbuzz_no_heap.dmp |
| target = self.dbg.CreateTarget("") |
| process = target.LoadCore("fizzbuzz_wow64.dmp") |
| self.assertGreaterEqual(process.GetNumThreads(), 1) |
| # This process crashed due to an access violation (0xc0000005), but the |
| # minidump doesn't have an exception record--perhaps the crash handler |
| # ate it. |
| # TODO: See if we can recover the exception information from the TEB, |
| # which, according to Windbg, has a pointer to an exception list. |
| |
| # In the dump, none of the threads are stopped, so we cannot use |
| # lldbutil.get_stopped_thread. |
| thread = process.GetThreadAtIndex(0) |
| # The crash is in main, so there should be at least one frame on the |
| # stack. |
| self.assertGreaterEqual(thread.GetNumFrames(), 1) |
| frame = thread.GetFrameAtIndex(0) |
| self.assertTrue(frame.IsValid()) |
| pc = frame.GetPC() |
| eip = frame.FindRegister("pc") |
| self.assertTrue(eip.IsValid()) |
| self.assertEqual(pc, eip.GetValueAsUnsigned()) |