diff options
Diffstat (limited to 'lldb/packages/Python')
3 files changed, 107 insertions, 0 deletions
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/TestWow64MiniDump.py b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/TestWow64MiniDump.py new file mode 100644 index 00000000000..08debab538f --- /dev/null +++ b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/TestWow64MiniDump.py @@ -0,0 +1,76 @@ +""" +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__) + + @skipUnlessWindows # for now mini-dump debugging is limited to Windows hosts + @no_debug_info_test + 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) + + @skipUnlessWindows # for now mini-dump debugging is limited to Windows hosts + @no_debug_info_test + 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) + + @skipUnlessWindows # for now mini-dump debugging is limited to Windows hosts + @no_debug_info_test + 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()) diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz.cpp b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz.cpp new file mode 100644 index 00000000000..295d4a1f24d --- /dev/null +++ b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz.cpp @@ -0,0 +1,31 @@ +// A sample program for getting minidumps on Windows. + +#include <iostream> + +bool +fizz(int x) +{ + return x % 3 == 0; +} + +bool +buzz(int x) +{ + return x % 5 == 0; +} + +int +main() +{ + int *buggy = 0; + + for (int i = 1; i <= 100; ++i) + { + if (fizz(i)) std::cout << "fizz"; + if (buzz(i)) std::cout << "buzz"; + if (!fizz(i) && !buzz(i)) std::cout << i; + std::cout << '\n'; + } + + return *buggy; +} diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz_wow64.dmp b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz_wow64.dmp Binary files differnew file mode 100644 index 00000000000..3d97186f2cd --- /dev/null +++ b/lldb/packages/Python/lldbsuite/test/functionalities/postmortem/wow64_minidump/fizzbuzz_wow64.dmp |
