| """Show bitfields and check that they display correctly.""" |
| |
| |
| |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class BitfieldsTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number to break inside main(). |
| self.line = line_number('main.c', '// Set break point at this line.') |
| |
| # BitFields exhibit crashes in record layout on Windows |
| # (http://llvm.org/pr21800) |
| @skipIfWindows |
| def test_and_run_command(self): |
| """Test 'frame variable ...' on a variable with bitfields.""" |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # Break inside the main. |
| lldbutil.run_break_set_by_file_and_line( |
| self, "main.c", self.line, num_expected_locations=1, loc_exact=True) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['stopped', |
| 'stop reason = breakpoint']) |
| |
| # The breakpoint should have a hit count of 1. |
| self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, |
| substrs=[' resolved, hit count = 1']) |
| |
| # This should display correctly. |
| self.expect( |
| "frame variable --show-types bits", |
| VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=[ |
| '(uint32_t:1) b1 = 1', |
| '(uint32_t:2) b2 = 3', |
| '(uint32_t:3) b3 = 7', |
| '(uint32_t) b4 = 15', |
| '(uint32_t:5) b5 = 31', |
| '(uint32_t:6) b6 = 63', |
| '(uint32_t:7) b7 = 127', |
| '(uint32_t:4) four = 15']) |
| |
| # And so should this. |
| # rdar://problem/8348251 |
| self.expect( |
| "frame variable --show-types", |
| VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=[ |
| '(uint32_t:1) b1 = 1', |
| '(uint32_t:2) b2 = 3', |
| '(uint32_t:3) b3 = 7', |
| '(uint32_t) b4 = 15', |
| '(uint32_t:5) b5 = 31', |
| '(uint32_t:6) b6 = 63', |
| '(uint32_t:7) b7 = 127', |
| '(uint32_t:4) four = 15']) |
| |
| self.expect("expr (bits.b1)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '1']) |
| self.expect("expr (bits.b2)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '3']) |
| self.expect("expr (bits.b3)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '7']) |
| self.expect("expr (bits.b4)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '15']) |
| self.expect("expr (bits.b5)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '31']) |
| self.expect("expr (bits.b6)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '63']) |
| self.expect("expr (bits.b7)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '127']) |
| self.expect("expr (bits.four)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '15']) |
| |
| self.expect( |
| "frame variable --show-types more_bits", |
| VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=[ |
| '(uint32_t:3) a = 3', |
| '(uint8_t:1) b = \'\\0\'', |
| '(uint8_t:1) c = \'\\x01\'', |
| '(uint8_t:1) d = \'\\0\'']) |
| |
| self.expect("expr (more_bits.a)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '3']) |
| self.expect("expr (more_bits.b)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint8_t', '\\0']) |
| self.expect("expr (more_bits.c)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint8_t', '\\x01']) |
| self.expect("expr (more_bits.d)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint8_t', '\\0']) |
| |
| self.expect("expr (packed.a)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['char', "'a'"]) |
| self.expect("expr (packed.b)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', "10"]) |
| self.expect("expr/x (packed.c)", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', "7112233"]) |
| |
| for bit in range(1,18): |
| expected = "1" if bit in [1, 5, 7, 13] else "0" |
| self.expect("expr even_more_bits.b" + str(bit), VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint8_t', expected]) |
| |
| for bit in [3, 10, 14]: |
| self.expect("expr even_more_bits.b" + str(bit) + " = 1", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint8_t', "1"]) |
| |
| self.expect( |
| "frame variable --show-types even_more_bits", |
| VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=[ |
| '(uint8_t:1) b1 = \'\\x01\'', |
| '(uint8_t:1) b2 = \'\\0\'', |
| '(uint8_t:1) b3 = \'\\x01\'', |
| '(uint8_t:1) b4 = \'\\0\'', |
| '(uint8_t:1) b5 = \'\\x01\'', |
| '(uint8_t:1) b6 = \'\\0\'', |
| '(uint8_t:1) b7 = \'\\x01\'', |
| '(uint8_t:1) b8 = \'\\0\'', |
| '(uint8_t:1) b9 = \'\\0\'', |
| '(uint8_t:1) b10 = \'\\x01\'', |
| '(uint8_t:1) b12 = \'\\0\'', |
| '(uint8_t:1) b13 = \'\\x01\'', |
| '(uint8_t:1) b14 = \'\\x01\'', |
| '(uint8_t:1) b15 = \'\\0\'', |
| '(uint8_t:1) b16 = \'\\0\'', |
| '(uint8_t:1) b17 = \'\\0\'', |
| ]) |
| |
| self.expect("v/x large_packed", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=["a = 0x0000000cbbbbaaaa", "b = 0x0000000dffffeee"]) |
| |
| # Check reading a bitfield through a pointer in various ways (PR47743) |
| self.expect("v/x large_packed_ptr->b", |
| substrs=["large_packed_ptr->b = 0x0000000dffffeeee"]) |
| self.expect("v/x large_packed_ptr[0].b", |
| substrs=["large_packed_ptr[0].b = 0x0000000dffffeeee"]) |
| |
| # BitFields exhibit crashes in record layout on Windows |
| # (http://llvm.org/pr21800) |
| @skipIfWindows |
| def test_expression_bug(self): |
| # Ensure evaluating (emulating) an expression does not break bitfield |
| # values for already parsed variables. The expression is run twice |
| # because the very first expression can resume a target (to allocate |
| # memory, etc.) even if it is not being jitted. |
| self.build() |
| lldbutil.run_to_line_breakpoint(self, lldb.SBFileSpec("main.c"), |
| self.line) |
| self.expect("v/x large_packed", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=["a = 0x0000000cbbbbaaaa", "b = 0x0000000dffffeee"]) |
| self.expect("expr --allow-jit false -- more_bits.a", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '3']) |
| self.expect("v/x large_packed", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=["a = 0x0000000cbbbbaaaa", "b = 0x0000000dffffeee"]) |
| self.expect("expr --allow-jit false -- more_bits.a", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=['uint32_t', '3']) |
| self.expect("v/x large_packed", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs=["a = 0x0000000cbbbbaaaa", "b = 0x0000000dffffeee"]) |
| |
| @add_test_categories(['pyapi']) |
| # BitFields exhibit crashes in record layout on Windows |
| # (http://llvm.org/pr21800) |
| @skipIfWindows |
| def test_and_python_api(self): |
| """Use Python APIs to inspect a bitfields variable.""" |
| self.build() |
| exe = self.getBuildArtifact("a.out") |
| |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| breakpoint = target.BreakpointCreateByLocation("main.c", self.line) |
| self.assertTrue(breakpoint, VALID_BREAKPOINT) |
| |
| process = target.LaunchSimple( |
| None, None, self.get_process_working_directory()) |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # The stop reason of the thread should be breakpoint. |
| thread = lldbutil.get_stopped_thread( |
| process, lldb.eStopReasonBreakpoint) |
| self.assertIsNotNone(thread) |
| |
| # The breakpoint should have a hit count of 1. |
| self.assertEqual(breakpoint.GetHitCount(), 1, BREAKPOINT_HIT_ONCE) |
| |
| # Lookup the "bits" variable which contains 8 bitfields. |
| frame = thread.GetFrameAtIndex(0) |
| bits = frame.FindVariable("bits") |
| self.DebugSBValue(bits) |
| self.assertEqual( |
| bits.GetTypeName(), 'Bits', |
| "bits.GetTypeName() == 'Bits'") |
| self.assertEqual( |
| bits.GetNumChildren(), 10, |
| "bits.GetNumChildren() == 10") |
| test_compiler = self.getCompiler() |
| self.assertEqual(bits.GetByteSize(), 32, "bits.GetByteSize() == 32") |
| |
| # Notice the pattern of int(b1.GetValue(), 0). We pass a base of 0 |
| # so that the proper radix is determined based on the contents of the |
| # string. |
| b1 = bits.GetChildMemberWithName("b1") |
| self.DebugSBValue(b1) |
| self.assertTrue(b1.GetName() == "b1" and |
| b1.GetTypeName() == "uint32_t:1" and |
| b1.IsInScope() and |
| int(b1.GetValue(), 0) == 1, |
| 'bits.b1 has type uint32_t:1, is in scope, and == 1') |
| |
| b7 = bits.GetChildMemberWithName("b7") |
| self.DebugSBValue(b7) |
| self.assertTrue(b7.GetName() == "b7" and |
| b7.GetTypeName() == "uint32_t:7" and |
| b7.IsInScope() and |
| int(b7.GetValue(), 0) == 127, |
| 'bits.b7 has type uint32_t:7, is in scope, and == 127') |
| |
| four = bits.GetChildMemberWithName("four") |
| self.DebugSBValue(four) |
| self.assertTrue(four.GetName() == "four" and |
| four.GetTypeName() == "uint32_t:4" and |
| four.IsInScope() and |
| int(four.GetValue(), 0) == 15, |
| 'bits.four has type uint32_t:4, is in scope, and == 15') |
| |
| # Now kill the process, and we are done. |
| rc = target.GetProcess().Kill() |
| self.assertTrue(rc.Success()) |
