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https://github.com/Gericom/teak-llvm.git
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783550be62
Starting with Windows 10, the Windows loader is itself multi-threaded, meaning that the loader spins up a few threads to do process initialization before it executes main. Windows delivers these notifications asynchronously and they can come out of order, so we can't be sure that the first thread we get a notification about is actually the zero'th thread. This patch fixes this by requesting the thread stopped at the breakpoint that was specified, rather than getting thread 0 and verifying that it is stopped at a breakpoint. Differential Revision: http://reviews.llvm.org/D16247 llvm-svn: 258432
160 lines
6.8 KiB
Python
160 lines
6.8 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 = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertIsNotNone(thread)
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# The breakpoint should have a hit count of 1.
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self.assertEqual(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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