1"""Test that we handle inferiors that send signals to themselves""" 2 3 4import lldb 5import re 6from lldbsuite.test.lldbplatformutil import getDarwinOSTriples 7from lldbsuite.test.decorators import * 8from lldbsuite.test.lldbtest import * 9from lldbsuite.test import lldbutil 10 11 12@skipIfWindows # signals do not exist on Windows 13class RaiseTestCase(TestBase): 14 NO_DEBUG_INFO_TESTCASE = True 15 16 @skipIfNetBSD # Hangs on NetBSD 17 def test_sigstop(self): 18 self.build() 19 self.signal_test("SIGSTOP", False) 20 # passing of SIGSTOP is not correctly handled, so not testing that 21 # scenario: https://llvm.org/bugs/show_bug.cgi?id=23574 22 23 @skipIfDarwin # darwin does not support real time signals 24 @skipIfTargetAndroid() 25 def test_sigsigrtmin(self): 26 self.build() 27 self.signal_test("SIGRTMIN", True) 28 29 @skipIfNetBSD # Hangs on NetBSD 30 def test_sigtrap(self): 31 self.build() 32 self.signal_test("SIGTRAP", True) 33 34 def launch(self, target, signal): 35 # launch the process, do not stop at entry point. 36 # If we have gotten the default for this signal, reset that as well. 37 if len(self.default_pass) != 0: 38 lldbutil.set_actions_for_signal( 39 self, signal, self.default_pass, self.default_stop, self.default_notify 40 ) 41 42 process = target.LaunchSimple( 43 [signal], None, self.get_process_working_directory() 44 ) 45 self.assertTrue(process, PROCESS_IS_VALID) 46 self.assertState(process.GetState(), lldb.eStateStopped) 47 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint) 48 self.assertTrue( 49 thread.IsValid(), "Thread should be stopped due to a breakpoint" 50 ) 51 return process 52 53 def set_handle(self, signal, pass_signal, stop_at_signal, notify_signal): 54 return_obj = lldb.SBCommandReturnObject() 55 self.dbg.GetCommandInterpreter().HandleCommand( 56 "process handle %s -p %s -s %s -n %s" 57 % (signal, pass_signal, stop_at_signal, notify_signal), 58 return_obj, 59 ) 60 self.assertTrue(return_obj.Succeeded(), "Setting signal handling failed") 61 62 def signal_test(self, signal, test_passing): 63 """Test that we handle inferior raising signals""" 64 exe = self.getBuildArtifact("a.out") 65 66 # Create a target by the debugger. 67 target = self.dbg.CreateTarget(exe) 68 self.assertTrue(target, VALID_TARGET) 69 lldbutil.run_break_set_by_symbol(self, "main") 70 self.default_pass = "" 71 self.default_stop = "" 72 self.default_notify = "" 73 74 # launch 75 process = self.launch(target, signal) 76 signo = process.GetUnixSignals().GetSignalNumberFromName(signal) 77 78 # retrieve default signal disposition 79 ( 80 self.default_pass, 81 self.default_stop, 82 self.default_notify, 83 ) = lldbutil.get_actions_for_signal(self, signal) 84 85 # Make sure we stop at the signal 86 lldbutil.set_actions_for_signal(self, signal, "false", "true", "true") 87 process.Continue() 88 self.assertState(process.GetState(), lldb.eStateStopped) 89 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal) 90 self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal") 91 self.assertGreaterEqual( 92 thread.GetStopReasonDataCount(), 1, "There was data in the event." 93 ) 94 self.assertEqual( 95 thread.GetStopReasonDataAtIndex(0), signo, "The stop signal was %s" % signal 96 ) 97 98 # Continue until we exit. 99 process.Continue() 100 self.assertState(process.GetState(), lldb.eStateExited) 101 self.assertEqual(process.GetExitStatus(), 0) 102 103 process = self.launch(target, signal) 104 105 # Make sure we do not stop at the signal. We should still get the 106 # notification. 107 lldbutil.set_actions_for_signal(self, signal, "false", "false", "true") 108 self.expect("process continue", substrs=["stopped and restarted", signal]) 109 self.assertState(process.GetState(), lldb.eStateExited) 110 self.assertEqual(process.GetExitStatus(), 0) 111 112 # launch again 113 process = self.launch(target, signal) 114 115 # Make sure we do not stop at the signal, and we do not get the 116 # notification. 117 lldbutil.set_actions_for_signal(self, signal, "false", "false", "false") 118 self.expect( 119 "process continue", substrs=["stopped and restarted"], matching=False 120 ) 121 self.assertState(process.GetState(), lldb.eStateExited) 122 self.assertEqual(process.GetExitStatus(), 0) 123 124 if not test_passing: 125 # reset signal handling to default 126 lldbutil.set_actions_for_signal( 127 self, signal, self.default_pass, self.default_stop, self.default_notify 128 ) 129 return 130 131 # launch again 132 process = self.launch(target, signal) 133 134 # Make sure we stop at the signal 135 lldbutil.set_actions_for_signal(self, signal, "true", "true", "true") 136 process.Continue() 137 self.assertState(process.GetState(), lldb.eStateStopped) 138 thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal) 139 self.assertTrue(thread.IsValid(), "Thread should be stopped due to a signal") 140 self.assertGreaterEqual( 141 thread.GetStopReasonDataCount(), 1, "There was data in the event." 142 ) 143 self.assertEqual( 144 thread.GetStopReasonDataAtIndex(0), 145 process.GetUnixSignals().GetSignalNumberFromName(signal), 146 "The stop signal was %s" % signal, 147 ) 148 149 # Continue until we exit. The process should receive the signal. 150 process.Continue() 151 self.assertState(process.GetState(), lldb.eStateExited) 152 self.assertEqual(process.GetExitStatus(), signo) 153 154 # launch again 155 process = self.launch(target, signal) 156 157 # Make sure we do not stop at the signal. We should still get the notification. Process 158 # should receive the signal. 159 lldbutil.set_actions_for_signal(self, signal, "true", "false", "true") 160 self.expect("process continue", substrs=["stopped and restarted", signal]) 161 self.assertState(process.GetState(), lldb.eStateExited) 162 self.assertEqual(process.GetExitStatus(), signo) 163 164 # launch again 165 process = self.launch(target, signal) 166 167 # Make sure we do not stop at the signal, and we do not get the notification. Process 168 # should receive the signal. 169 lldbutil.set_actions_for_signal(self, signal, "true", "false", "false") 170 self.expect( 171 "process continue", substrs=["stopped and restarted"], matching=False 172 ) 173 self.assertState(process.GetState(), lldb.eStateExited) 174 self.assertEqual(process.GetExitStatus(), signo) 175 176 # reset signal handling to default 177 lldbutil.set_actions_for_signal( 178 self, signal, self.default_pass, self.default_stop, self.default_notify 179 ) 180