156 lines
6.2 KiB
Python
156 lines
6.2 KiB
Python
"""Show bitfields and check that they display correctly."""
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import os, time
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import unittest2
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import lldb
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from lldbtest import *
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class BitfieldsTestCase(TestBase):
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mydir = "bitfields"
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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def test_with_dsym_and_run_command(self):
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"""Test 'frame variable ...' on a variable with bitfields."""
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self.buildDsym()
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self.bitfields_variable()
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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def test_with_dsym_and_python_api(self):
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"""Use Python APIs to inspect a bitfields variable."""
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self.buildDsym()
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self.bitfields_variable_python()
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def test_with_dwarf_and_run_command(self):
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"""Test 'frame variable ...' on a variable with bitfields."""
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self.buildDwarf()
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self.bitfields_variable()
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def test_with_dwarf_and_python_api(self):
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"""Use Python APIs to inspect a bitfields variable."""
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self.buildDwarf()
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self.bitfields_variable_python()
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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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def bitfields_variable(self):
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"""Test 'frame variable ...' on a variable with bitfields."""
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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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self.expect("breakpoint set -f main.c -l %d" % self.line,
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BREAKPOINT_CREATED,
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startstr = "Breakpoint created: 1: file ='main.c', line = %d, locations = 1" %
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self.line)
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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 = ['state is 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", 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 -t 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:4) 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 -t", 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:4) 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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def bitfields_variable_python(self):
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"""Use Python APIs to inspect a bitfields variable."""
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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.IsValid(), VALID_TARGET)
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breakpoint = target.BreakpointCreateByLocation("main.c", self.line)
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self.assertTrue(breakpoint.IsValid(), VALID_BREAKPOINT)
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self.runCmd("run", RUN_SUCCEEDED, setCookie=False)
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# This does not work, and results in the process stopped at dyld_start?
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#process = target.LaunchProcess([''], [''], os.ctermid(), False)
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self.process = target.GetProcess()
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self.assertTrue(self.process.IsValid(), 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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self.assertTrue(thread.GetStopReason() == lldb.eStopReasonBreakpoint,
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STOPPED_DUE_TO_BREAKPOINT)
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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.LookupVar("bits")
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self.DebugSBValue(frame, bits)
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self.assertTrue(bits.GetTypeName() == "Bits" and
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bits.GetNumChildren() == 8 and
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bits.GetByteSize() == 4,
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"(Bits)bits with byte size of 4 and 8 children")
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# Notice the pattern of int(b1.GetValue(frame), 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.GetChildAtIndex(0)
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self.DebugSBValue(frame, 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(frame) and
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int(b1.GetValue(frame), 0) == 1,
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'bits.b1 has type uint32_t:1, is in scope, and == 1')
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b7 = bits.GetChildAtIndex(6)
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self.DebugSBValue(frame, 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(frame) and
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int(b7.GetValue(frame), 0) == 127,
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'bits.b7 has type uint32_t:7, is in scope, and == 127')
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four = bits.GetChildAtIndex(7)
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self.DebugSBValue(frame, 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(frame) and
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int(four.GetValue(frame), 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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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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