163 lines
7.0 KiB
Python
163 lines
7.0 KiB
Python
"""Show bitfields and check that they display correctly."""
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from __future__ import print_function
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import os, time
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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class BitfieldsTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.line = line_number('main.c', '// Set break point at this line.')
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@skipIfWindows # BitFields exhibit crashes in record layout on Windows (http://llvm.org/pr21800)
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def test_and_run_command(self):
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"""Test 'frame variable ...' on a variable with bitfields."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Break inside the main.
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lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ['stopped',
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'stop reason = breakpoint'])
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# The breakpoint should have a hit count of 1.
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self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
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substrs = [' resolved, hit count = 1'])
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# This should display correctly.
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self.expect("frame variable --show-types bits", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['(uint32_t:1) b1 = 1',
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'(uint32_t:2) b2 = 3',
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'(uint32_t:3) b3 = 7',
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'(uint32_t) b4 = 15',
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'(uint32_t:5) b5 = 31',
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'(uint32_t:6) b6 = 63',
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'(uint32_t:7) b7 = 127',
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'(uint32_t:4) four = 15'])
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# And so should this.
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# rdar://problem/8348251
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self.expect("frame variable --show-types", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['(uint32_t:1) b1 = 1',
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'(uint32_t:2) b2 = 3',
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'(uint32_t:3) b3 = 7',
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'(uint32_t) b4 = 15',
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'(uint32_t:5) b5 = 31',
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'(uint32_t:6) b6 = 63',
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'(uint32_t:7) b7 = 127',
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'(uint32_t:4) four = 15'])
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self.expect("expr (bits.b1)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '1'])
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self.expect("expr (bits.b2)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '3'])
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self.expect("expr (bits.b3)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '7'])
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self.expect("expr (bits.b4)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '15'])
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self.expect("expr (bits.b5)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '31'])
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self.expect("expr (bits.b6)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '63'])
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self.expect("expr (bits.b7)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '127'])
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self.expect("expr (bits.four)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '15'])
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self.expect("frame variable --show-types more_bits", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['(uint32_t:3) a = 3',
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'(uint8_t:1) b = \'\\0\'',
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'(uint8_t:1) c = \'\\x01\'',
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'(uint8_t:1) d = \'\\0\''])
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self.expect("expr (more_bits.a)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint32_t', '3'])
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self.expect("expr (more_bits.b)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint8_t', '\\0'])
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self.expect("expr (more_bits.c)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint8_t', '\\x01'])
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self.expect("expr (more_bits.d)", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ['uint8_t', '\\0'])
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@add_test_categories(['pyapi'])
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@skipIfWindows # BitFields exhibit crashes in record layout on Windows (http://llvm.org/pr21800)
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def test_and_python_api(self):
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"""Use Python APIs to inspect a bitfields variable."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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breakpoint = target.BreakpointCreateByLocation("main.c", self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# The stop reason of the thread should be breakpoint.
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thread = target.GetProcess().GetThreadAtIndex(0)
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if thread.GetStopReason() != lldb.eStopReasonBreakpoint:
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from lldbsuite.test.lldbutil import stop_reason_to_str
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self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS %
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stop_reason_to_str(thread.GetStopReason()))
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# The breakpoint should have a hit count of 1.
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self.assertTrue(breakpoint.GetHitCount() == 1, BREAKPOINT_HIT_ONCE)
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# Lookup the "bits" variable which contains 8 bitfields.
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frame = thread.GetFrameAtIndex(0)
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bits = frame.FindVariable("bits")
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self.DebugSBValue(bits)
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self.assertTrue(bits.GetTypeName() == 'Bits', "bits.GetTypeName() == 'Bits'");
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self.assertTrue(bits.GetNumChildren() == 10, "bits.GetNumChildren() == 10");
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test_compiler = self.getCompiler()
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self.assertTrue(bits.GetByteSize() == 32, "bits.GetByteSize() == 32");
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# Notice the pattern of int(b1.GetValue(), 0). We pass a base of 0
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# so that the proper radix is determined based on the contents of the
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# string.
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b1 = bits.GetChildMemberWithName("b1")
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self.DebugSBValue(b1)
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self.assertTrue(b1.GetName() == "b1" and
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b1.GetTypeName() == "uint32_t:1" and
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b1.IsInScope() and
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int(b1.GetValue(), 0) == 1,
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'bits.b1 has type uint32_t:1, is in scope, and == 1')
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b7 = bits.GetChildMemberWithName("b7")
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self.DebugSBValue(b7)
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self.assertTrue(b7.GetName() == "b7" and
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b7.GetTypeName() == "uint32_t:7" and
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b7.IsInScope() and
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int(b7.GetValue(), 0) == 127,
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'bits.b7 has type uint32_t:7, is in scope, and == 127')
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four = bits.GetChildMemberWithName("four")
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self.DebugSBValue(four)
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self.assertTrue(four.GetName() == "four" and
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four.GetTypeName() == "uint32_t:4" and
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four.IsInScope() and
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int(four.GetValue(), 0) == 15,
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'bits.four has type uint32_t:4, is in scope, and == 15')
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# Now kill the process, and we are done.
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rc = target.GetProcess().Kill()
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self.assertTrue(rc.Success())
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