1 """Test stepping over and into inlined functions.""" 2 3 import os, time 4 import unittest2 5 import lldb 6 import lldbutil 7 from lldbtest import * 8 9 class TestInlineStepping(TestBase): 10 11 mydir = os.path.join("functionalities", "inline-stepping") 12 13 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 14 @python_api_test 15 @dsym_test 16 def test_with_dsym_and_python_api(self): 17 """Test stepping over and into inlined functions.""" 18 self.buildDsym() 19 self.inline_stepping() 20 21 @python_api_test 22 @dwarf_test 23 @expectedFailureIcc # Not really a bug. ICC combines two inlined functions. 24 def test_with_dwarf_and_python_api(self): 25 """Test stepping over and into inlined functions.""" 26 self.buildDwarf() 27 self.inline_stepping() 28 29 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 30 @python_api_test 31 @dsym_test 32 def test_step_over_with_dsym_and_python_api(self): 33 """Test stepping over and into inlined functions.""" 34 self.buildDsym() 35 self.inline_stepping_step_over() 36 37 @python_api_test 38 @dwarf_test 39 def test_step_over_with_dwarf_and_python_api(self): 40 """Test stepping over and into inlined functions.""" 41 self.buildDwarf() 42 self.inline_stepping_step_over() 43 44 def setUp(self): 45 # Call super's setUp(). 46 TestBase.setUp(self) 47 # Find the line numbers that we will step to in main: 48 self.main_source = "calling.cpp" 49 self.source_lines = {} 50 functions = ['caller_ref_1', 'caller_ref_2', 'inline_ref_1', 'inline_ref_2', 'called_by_inline_ref', 'caller_trivial_1', 'caller_trivial_2', 'inline_trivial_1', 'inline_trivial_2', 'called_by_inline_trivial' ] 51 for name in functions: 52 self.source_lines[name] = line_number(self.main_source, "// In " + name + ".") 53 self.main_source_spec = lldb.SBFileSpec (self.main_source) 54 55 def do_step(self, step_type, destination_line_entry): 56 expected_stack_depth = self.thread.GetNumFrames() 57 if step_type == "into": 58 expected_stack_depth += 1 59 self.thread.StepInto() 60 elif step_type == "out": 61 expected_stack_depth -= 1 62 self.thread.StepOut() 63 elif step_type == "over": 64 self.thread.StepOver() 65 else: 66 self.fail ("Unrecognized step type: " + step_type) 67 68 threads = lldbutil.get_stopped_threads (self.process, lldb.eStopReasonPlanComplete) 69 if len(threads) != 1: 70 destination_description = lldb.SBStream() 71 destination_line_entry.GetDescription(destination_description) 72 self.fail ("Failed to stop due to step " + step_type + " operation stepping to: " + destination_description.GetData()) 73 74 self.thread = threads[0] 75 76 stop_line_entry = self.thread.GetFrameAtIndex(0).GetLineEntry() 77 self.assertTrue (stop_line_entry.IsValid(), "Stop line entry was not valid.") 78 79 # Don't use the line entry equal operator because we don't care about the column number. 80 stop_at_right_place = (stop_line_entry.GetFileSpec() == destination_line_entry.GetFileSpec() and stop_line_entry.GetLine() == destination_line_entry.GetLine()) 81 if stop_at_right_place == False: 82 destination_description = lldb.SBStream() 83 destination_line_entry.GetDescription(destination_description) 84 85 actual_description = lldb.SBStream() 86 stop_line_entry.GetDescription(actual_description) 87 88 self.fail ("Step " + step_type + " stopped at wrong place: expected: " + destination_description.GetData() + " got: " + actual_description.GetData() + ".") 89 90 real_stack_depth = self.thread.GetNumFrames() 91 92 if real_stack_depth != expected_stack_depth: 93 destination_description = lldb.SBStream() 94 destination_line_entry.GetDescription(destination_description) 95 self.fail ("Step %s to %s got wrong number of frames, should be: %d was: %d."%(step_type, destination_description.GetData(), expected_stack_depth, real_stack_depth)) 96 97 def run_step_sequence(self, step_sequence): 98 """This function takes a list of duples instructing how to run the program. The first element in each duple is 99 a source pattern for the target location, and the second is the operation that will take you from the current 100 source location to the target location. It will then run all the steps in the sequence. 101 It will check that you arrived at the expected source location at each step, and that the stack depth changed 102 correctly for the operation in the sequence.""" 103 104 target_line_entry = lldb.SBLineEntry() 105 target_line_entry.SetFileSpec(self.main_source_spec) 106 107 for step_pattern in step_sequence: 108 step_stop_line = line_number (self.main_source, step_pattern[0]) 109 target_line_entry.SetLine(step_stop_line) 110 self.do_step (step_pattern[1], target_line_entry) 111 112 113 def inline_stepping(self): 114 """Use Python APIs to test stepping over and hitting breakpoints.""" 115 exe = os.path.join(os.getcwd(), "a.out") 116 117 target = self.dbg.CreateTarget(exe) 118 self.assertTrue(target, VALID_TARGET) 119 120 break_1_in_main = target.BreakpointCreateBySourceRegex ('// Stop here and step over to set up stepping over.', self.main_source_spec) 121 self.assertTrue(break_1_in_main, VALID_BREAKPOINT) 122 123 # Now launch the process, and do not stop at entry point. 124 self.process = target.LaunchSimple (None, None, os.getcwd()) 125 126 self.assertTrue(self.process, PROCESS_IS_VALID) 127 128 # The stop reason of the thread should be breakpoint. 129 threads = lldbutil.get_threads_stopped_at_breakpoint (self.process, break_1_in_main) 130 131 if len(threads) != 1: 132 self.fail ("Failed to stop at first breakpoint in main.") 133 134 self.thread = threads[0] 135 136 # Step over the inline_value = 0 line to get us to inline_trivial_1 called from main. Doing it this way works 137 # around a bug in lldb where the breakpoint on the containing line of an inlined function with no return value 138 # gets set past the insertion line in the function. 139 # Then test stepping over a simple inlined function. Note, to test all the parts of the inlined stepping 140 # the calls inline_stepping_1 and inline_stepping_2 should line up at the same address, that way we will test 141 # the "virtual" stepping. 142 # FIXME: Put in a check to see if that is true and warn if it is not. 143 144 step_sequence = [["// At inline_trivial_1 called from main.", "over"], 145 ["// At first call of caller_trivial_1 in main.", "over"]] 146 self.run_step_sequence(step_sequence) 147 148 # Now step from caller_ref_1 all the way into called_by_inline_trivial 149 150 step_sequence = [["// In caller_trivial_1.", "into"], 151 ["// In caller_trivial_2.", "into"], 152 ["// In inline_trivial_1.", "into"], 153 ["// In inline_trivial_2.", "into"], 154 ["// At caller_by_inline_trivial in inline_trivial_2.", "over"], 155 ["// In called_by_inline_trivial.", "into"]] 156 self.run_step_sequence(step_sequence) 157 158 # Now run to the inline_trivial_1 just before the immediate step into inline_trivial_2: 159 160 break_2_in_main = target.BreakpointCreateBySourceRegex ('// At second call of caller_trivial_1 in main.', self.main_source_spec) 161 self.assertTrue(break_2_in_main, VALID_BREAKPOINT) 162 163 threads = lldbutil.continue_to_breakpoint (self.process, break_2_in_main) 164 self.assertTrue (len(threads) == 1, "Successfully ran to call site of second caller_trivial_1 call.") 165 self.thread = threads[0] 166 167 step_sequence = [["// In caller_trivial_1.", "into"], 168 ["// In caller_trivial_2.", "into"], 169 ["// In inline_trivial_1.", "into"]] 170 self.run_step_sequence(step_sequence) 171 172 # Then call some trivial function, and make sure we end up back where we were in the inlined call stack: 173 174 frame = self.thread.GetFrameAtIndex(0) 175 before_line_entry = frame.GetLineEntry() 176 value = frame.EvaluateExpression ("function_to_call()") 177 after_line_entry = frame.GetLineEntry() 178 179 self.assertTrue (before_line_entry.GetLine() == after_line_entry.GetLine(), "Line entry before and after function calls are the same.") 180 181 # Now make sure stepping OVER in the middle of the stack works, and then check finish from the inlined frame: 182 183 step_sequence = [["// At increment in inline_trivial_1.", "over"], 184 ["// At increment in caller_trivial_2.", "out"]] 185 self.run_step_sequence(step_sequence) 186 187 188 # Now run to the place in main just before the first call to caller_ref_1: 189 190 break_3_in_main = target.BreakpointCreateBySourceRegex ('// At first call of caller_ref_1 in main.', self.main_source_spec) 191 self.assertTrue(break_3_in_main, VALID_BREAKPOINT) 192 193 threads = lldbutil.continue_to_breakpoint (self.process, break_3_in_main) 194 self.assertTrue (len(threads) == 1, "Successfully ran to call site of first caller_ref_1 call.") 195 self.thread = threads[0] 196 197 step_sequence = [["// In caller_ref_1.", "into"], 198 ["// In caller_ref_2.", "into"], 199 ["// In inline_ref_1.", "into"], 200 ["// In inline_ref_2.", "into"], 201 ["// In called_by_inline_ref.", "into"], 202 ["// In inline_ref_2.", "out"], 203 ["// In inline_ref_1.", "out"], 204 ["// At increment in inline_ref_1.", "over"], 205 ["// In caller_ref_2.", "out"], 206 ["// At increment in caller_ref_2.", "over"]] 207 self.run_step_sequence (step_sequence) 208 209 def inline_stepping_step_over(self): 210 """Use Python APIs to test stepping over and hitting breakpoints.""" 211 exe = os.path.join(os.getcwd(), "a.out") 212 213 target = self.dbg.CreateTarget(exe) 214 self.assertTrue(target, VALID_TARGET) 215 216 break_1_in_main = target.BreakpointCreateBySourceRegex ('// At second call of caller_ref_1 in main.', self.main_source_spec) 217 self.assertTrue(break_1_in_main, VALID_BREAKPOINT) 218 219 # Now launch the process, and do not stop at entry point. 220 self.process = target.LaunchSimple (None, None, os.getcwd()) 221 222 self.assertTrue(self.process, PROCESS_IS_VALID) 223 224 # The stop reason of the thread should be breakpoint. 225 threads = lldbutil.get_threads_stopped_at_breakpoint (self.process, break_1_in_main) 226 227 if len(threads) != 1: 228 self.fail ("Failed to stop at first breakpoint in main.") 229 230 self.thread = threads[0] 231 232 step_sequence = [["// In caller_ref_1.", "into"], 233 ["// In caller_ref_2.", "into"], 234 ["// At increment in caller_ref_2.", "over"]] 235 self.run_step_sequence (step_sequence) 236 237 238 239 240 if __name__ == '__main__': 241 import atexit 242 lldb.SBDebugger.Initialize() 243 atexit.register(lambda: lldb.SBDebugger.Terminate()) 244 unittest2.main() 245
