1""" 2Test hardware breakpoints for multiple threads. 3""" 4 5 6 7import lldb 8from lldbsuite.test.decorators import * 9from lldbsuite.test.lldbtest import * 10from lldbsuite.test import lldbutil 11 12# Hardware breakpoints are supported only by platforms mentioned in oslist. 13@skipUnlessPlatform(oslist=['linux']) 14class HardwareBreakpointMultiThreadTestCase(TestBase): 15 NO_DEBUG_INFO_TESTCASE = True 16 17 mydir = TestBase.compute_mydir(__file__) 18 19 # LLDB supports hardware breakpoints for arm and aarch64 architectures. 20 @skipIf(archs=no_match(['arm', 'aarch64'])) 21 def test_hw_break_set_delete_multi_thread(self): 22 self.build() 23 self.setTearDownCleanup() 24 self.break_multi_thread('delete') 25 26 # LLDB supports hardware breakpoints for arm and aarch64 architectures. 27 @skipIf(archs=no_match(['arm', 'aarch64'])) 28 def test_hw_break_set_disable_multi_thread(self): 29 self.build() 30 self.setTearDownCleanup() 31 self.break_multi_thread('disable') 32 33 def setUp(self): 34 # Call super's setUp(). 35 TestBase.setUp(self) 36 # Our simple source filename. 37 self.source = 'main.cpp' 38 # Find the line number to break inside main(). 39 self.first_stop = line_number( 40 self.source, 'Starting thread creation with hardware breakpoint set') 41 42 def break_multi_thread(self, removal_type): 43 """Test that lldb hardware breakpoints work for multiple threads.""" 44 self.runCmd("file " + self.getBuildArtifact("a.out"), 45 CURRENT_EXECUTABLE_SET) 46 47 # Stop in main before creating any threads. 48 lldbutil.run_break_set_by_file_and_line( 49 self, None, self.first_stop, num_expected_locations=1) 50 51 # Run the program. 52 self.runCmd("run", RUN_SUCCEEDED) 53 54 # We should be stopped again due to the breakpoint. 55 # The stop reason of the thread should be breakpoint. 56 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 57 substrs=['stopped', 58 'stop reason = breakpoint']) 59 60 # Now set a hardware breakpoint in thread function. 61 self.expect("breakpoint set -b hw_break_function --hardware", 62 substrs=[ 63 'Breakpoint', 64 'hw_break_function', 65 'address = 0x']) 66 67 # We should stop in hw_break_function function for 4 threads. 68 count = 0 69 70 while count < 2 : 71 72 self.runCmd("process continue") 73 74 # We should be stopped in hw_break_function 75 # The stop reason of the thread should be breakpoint. 76 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 77 substrs=[ 78 'stop reason = breakpoint', 79 'hw_break_function']) 80 81 # Continue the loop and test that we are stopped 4 times. 82 count += 1 83 84 if removal_type == 'delete': 85 self.runCmd("settings set auto-confirm true") 86 87 # Now 'breakpoint delete' should just work fine without confirmation 88 # prompt from the command interpreter. 89 self.expect("breakpoint delete", 90 startstr="All breakpoints removed") 91 92 # Restore the original setting of auto-confirm. 93 self.runCmd("settings clear auto-confirm") 94 95 elif removal_type == 'disable': 96 self.expect("breakpoint disable", 97 startstr="All breakpoints disabled.") 98 99 # Continue. Program should exit without stopping anywhere. 100 self.runCmd("process continue") 101 102 # Process should have stopped and exited with status = 0 103 self.expect("process status", PROCESS_STOPPED, 104 patterns=['Process .* exited with status = 0']) 105