1 """Show bitfields and check that they display correctly.""" 2 3 import os, time 4 import unittest2 5 import lldb 6 from lldbtest import * 7 import lldbutil 8 9 class BitfieldsTestCase(TestBase): 10 11 mydir = os.path.join("lang", "c", "bitfields") 12 13 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 14 @dsym_test 15 def test_with_dsym_and_run_command(self): 16 """Test 'frame variable ...' on a variable with bitfields.""" 17 self.buildDsym() 18 self.bitfields_variable() 19 20 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") 21 @python_api_test 22 @dsym_test 23 def test_with_dsym_and_python_api(self): 24 """Use Python APIs to inspect a bitfields variable.""" 25 self.buildDsym() 26 self.bitfields_variable_python() 27 28 @dwarf_test 29 def test_with_dwarf_and_run_command(self): 30 """Test 'frame variable ...' on a variable with bitfields.""" 31 self.buildDwarf() 32 self.bitfields_variable() 33 34 @python_api_test 35 @dwarf_test 36 @expectedFailureGcc # GCC (4.6/4.7) generates incorrect code with unnamed bitfields. 37 def test_with_dwarf_and_python_api(self): 38 """Use Python APIs to inspect a bitfields variable.""" 39 self.buildDwarf() 40 self.bitfields_variable_python() 41 42 def setUp(self): 43 # Call super's setUp(). 44 TestBase.setUp(self) 45 # Find the line number to break inside main(). 46 self.line = line_number('main.c', '// Set break point at this line.') 47 48 def bitfields_variable(self): 49 """Test 'frame variable ...' on a variable with bitfields.""" 50 exe = os.path.join(os.getcwd(), "a.out") 51 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) 52 53 # Break inside the main. 54 lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True) 55 56 self.runCmd("run", RUN_SUCCEEDED) 57 58 # The stop reason of the thread should be breakpoint. 59 self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, 60 substrs = ['stopped', 61 'stop reason = breakpoint']) 62 63 # The breakpoint should have a hit count of 1. 64 self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, 65 substrs = [' resolved, hit count = 1']) 66 67 # This should display correctly. 68 self.expect("frame variable --show-types bits", VARIABLES_DISPLAYED_CORRECTLY, 69 substrs = ['(uint32_t:1) b1 = 1', 70 '(uint32_t:2) b2 = 3', 71 '(uint32_t:3) b3 = 7', 72 '(uint32_t) b4 = 15', 73 '(uint32_t:5) b5 = 31', 74 '(uint32_t:6) b6 = 63', 75 '(uint32_t:7) b7 = 127', 76 '(uint32_t:4) four = 15']) 77 78 # And so should this. 79 # rdar://problem/8348251 80 self.expect("frame variable --show-types", VARIABLES_DISPLAYED_CORRECTLY, 81 substrs = ['(uint32_t:1) b1 = 1', 82 '(uint32_t:2) b2 = 3', 83 '(uint32_t:3) b3 = 7', 84 '(uint32_t) b4 = 15', 85 '(uint32_t:5) b5 = 31', 86 '(uint32_t:6) b6 = 63', 87 '(uint32_t:7) b7 = 127', 88 '(uint32_t:4) four = 15']) 89 90 self.expect("expr (bits.b1)", VARIABLES_DISPLAYED_CORRECTLY, 91 substrs = ['uint32_t', '1']) 92 self.expect("expr (bits.b2)", VARIABLES_DISPLAYED_CORRECTLY, 93 substrs = ['uint32_t', '3']) 94 self.expect("expr (bits.b3)", VARIABLES_DISPLAYED_CORRECTLY, 95 substrs = ['uint32_t', '7']) 96 self.expect("expr (bits.b4)", VARIABLES_DISPLAYED_CORRECTLY, 97 substrs = ['uint32_t', '15']) 98 self.expect("expr (bits.b5)", VARIABLES_DISPLAYED_CORRECTLY, 99 substrs = ['uint32_t', '31']) 100 self.expect("expr (bits.b6)", VARIABLES_DISPLAYED_CORRECTLY, 101 substrs = ['uint32_t', '63']) 102 self.expect("expr (bits.b7)", VARIABLES_DISPLAYED_CORRECTLY, 103 substrs = ['uint32_t', '127']) 104 self.expect("expr (bits.four)", VARIABLES_DISPLAYED_CORRECTLY, 105 substrs = ['uint32_t', '15']) 106 107 self.expect("frame variable --show-types more_bits", VARIABLES_DISPLAYED_CORRECTLY, 108 substrs = ['(uint32_t:3) a = 3', 109 '(uint8_t:1) b = \'\\0\'', 110 '(uint8_t:1) c = \'\\x01\'', 111 '(uint8_t:1) d = \'\\0\'']) 112 113 self.expect("expr (more_bits.a)", VARIABLES_DISPLAYED_CORRECTLY, 114 substrs = ['uint32_t', '3']) 115 self.expect("expr (more_bits.b)", VARIABLES_DISPLAYED_CORRECTLY, 116 substrs = ['uint8_t', '\\0']) 117 self.expect("expr (more_bits.c)", VARIABLES_DISPLAYED_CORRECTLY, 118 substrs = ['uint8_t', '\\x01']) 119 self.expect("expr (more_bits.d)", VARIABLES_DISPLAYED_CORRECTLY, 120 substrs = ['uint8_t', '\\0']) 121 122 self.expect("target modules dump symfile a.out", VARIABLES_DISPLAYED_CORRECTLY, 123 substrs = ['Bits', 'uint32_t b3 : 3', 124 'MoreBits', 'uint32_t a : 3']) 125 126 def bitfields_variable_python(self): 127 """Use Python APIs to inspect a bitfields variable.""" 128 exe = os.path.join(os.getcwd(), "a.out") 129 130 target = self.dbg.CreateTarget(exe) 131 self.assertTrue(target, VALID_TARGET) 132 133 breakpoint = target.BreakpointCreateByLocation("main.c", self.line) 134 self.assertTrue(breakpoint, VALID_BREAKPOINT) 135 136 process = target.LaunchSimple(None, None, os.getcwd()) 137 self.assertTrue(process, PROCESS_IS_VALID) 138 139 # The stop reason of the thread should be breakpoint. 140 thread = target.GetProcess().GetThreadAtIndex(0) 141 if thread.GetStopReason() != lldb.eStopReasonBreakpoint: 142 from lldbutil import stop_reason_to_str 143 self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS % 144 stop_reason_to_str(thread.GetStopReason())) 145 146 # The breakpoint should have a hit count of 1. 147 self.assertTrue(breakpoint.GetHitCount() == 1, BREAKPOINT_HIT_ONCE) 148 149 # Lookup the "bits" variable which contains 8 bitfields. 150 frame = thread.GetFrameAtIndex(0) 151 bits = frame.FindVariable("bits") 152 self.DebugSBValue(bits) 153 self.assertTrue(bits.GetTypeName() == 'Bits', "bits.GetTypeName() == 'Bits'"); 154 self.assertTrue(bits.GetNumChildren() == 10, "bits.GetNumChildren() == 10"); 155 self.assertTrue(bits.GetByteSize() == 32, "bits.GetByteSize() == 32"); 156 157 # Notice the pattern of int(b1.GetValue(), 0). We pass a base of 0 158 # so that the proper radix is determined based on the contents of the 159 # string. 160 b1 = bits.GetChildMemberWithName("b1") 161 self.DebugSBValue(b1) 162 self.assertTrue(b1.GetName() == "b1" and 163 b1.GetTypeName() == "uint32_t:1" and 164 b1.IsInScope() and 165 int(b1.GetValue(), 0) == 1, 166 'bits.b1 has type uint32_t:1, is in scope, and == 1') 167 168 b7 = bits.GetChildMemberWithName("b7") 169 self.DebugSBValue(b7) 170 self.assertTrue(b7.GetName() == "b7" and 171 b7.GetTypeName() == "uint32_t:7" and 172 b7.IsInScope() and 173 int(b7.GetValue(), 0) == 127, 174 'bits.b7 has type uint32_t:7, is in scope, and == 127') 175 176 four = bits.GetChildMemberWithName("four") 177 self.DebugSBValue(four) 178 self.assertTrue(four.GetName() == "four" and 179 four.GetTypeName() == "uint32_t:4" and 180 four.IsInScope() and 181 int(four.GetValue(), 0) == 15, 182 'bits.four has type uint32_t:4, is in scope, and == 15') 183 184 # Now kill the process, and we are done. 185 rc = target.GetProcess().Kill() 186 self.assertTrue(rc.Success()) 187 188 189 if __name__ == '__main__': 190 import atexit 191 lldb.SBDebugger.Initialize() 192 atexit.register(lambda: lldb.SBDebugger.Terminate()) 193 unittest2.main() 194
