54c496dad6
It is currently possible to register a frame recognizer, but it will be applied if and only if the frame's PC points to the very first instruction of the specified function, which limits usability of this feature. The implementation already supports changing this behaviour by passing an additional flag, but it's not possible to set it via the command interface. Fix that. Reviewed By: jingham Differential Revision: https://reviews.llvm.org/D108510
296 lines
13 KiB
Python
296 lines
13 KiB
Python
# encoding: utf-8
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"""
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Test lldb's frame recognizers.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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import recognizer
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class FrameRecognizerTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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@skipUnlessDarwin
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def test_frame_recognizer_1(self):
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Clear internal & plugins recognizers that get initialized at launch
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self.runCmd("frame recognizer clear")
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self.runCmd("command script import " + os.path.join(self.getSourceDir(), "recognizer.py"))
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self.expect("frame recognizer list",
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substrs=['no matching results found.'])
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo")
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self.expect("frame recognizer list",
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substrs=['0: recognizer.MyFrameRecognizer, module a.out, symbol foo'])
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self.runCmd("frame recognizer add -l recognizer.MyOtherFrameRecognizer -s a.out -n bar -x")
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self.expect(
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"frame recognizer list",
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substrs=[
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'1: recognizer.MyOtherFrameRecognizer, module a.out, symbol bar (regexp)',
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'0: recognizer.MyFrameRecognizer, module a.out, symbol foo'
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])
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self.runCmd("frame recognizer delete 0")
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# Test that it deleted the recognizer with id 0.
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self.expect("frame recognizer list",
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substrs=['1: recognizer.MyOtherFrameRecognizer, module a.out, symbol bar (regexp)'])
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self.expect("frame recognizer list", matching=False,
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substrs=['MyFrameRecognizer'])
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# Test that an invalid index and deleting the same index again
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# is an error and doesn't do any changes.
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self.expect("frame recognizer delete 2", error=True,
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substrs=["error: '2' is not a valid recognizer id."])
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self.expect("frame recognizer delete 0", error=True,
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substrs=["error: '0' is not a valid recognizer id."])
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# Recognizers should have the same state as above.
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self.expect("frame recognizer list",
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substrs=['1: recognizer.MyOtherFrameRecognizer, module a.out, symbol bar (regexp)'])
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self.expect("frame recognizer list", matching=False,
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substrs=['MyFrameRecognizer'])
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self.runCmd("frame recognizer clear")
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self.expect("frame recognizer list",
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substrs=['no matching results found.'])
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo")
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "foo",
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exe_name = exe)
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frame = thread.GetSelectedFrame()
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self.expect("frame variable",
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substrs=['(int) a = 42', '(int) b = 56'])
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# Recognized arguments don't show up by default...
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variables = frame.GetVariables(lldb.SBVariablesOptions())
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self.assertEqual(variables.GetSize(), 0)
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# ...unless you set target.display-recognized-arguments to 1...
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self.runCmd("settings set target.display-recognized-arguments 1")
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variables = frame.GetVariables(lldb.SBVariablesOptions())
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self.assertEqual(variables.GetSize(), 2)
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# ...and you can reset it back to 0 to hide them again...
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self.runCmd("settings set target.display-recognized-arguments 0")
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variables = frame.GetVariables(lldb.SBVariablesOptions())
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self.assertEqual(variables.GetSize(), 0)
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# ... or explicitly ask for them with SetIncludeRecognizedArguments(True).
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opts = lldb.SBVariablesOptions()
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opts.SetIncludeRecognizedArguments(True)
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variables = frame.GetVariables(opts)
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self.assertEqual(variables.GetSize(), 2)
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self.assertEqual(variables.GetValueAtIndex(0).name, "a")
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self.assertEqual(variables.GetValueAtIndex(0).signed, 42)
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self.assertEqual(variables.GetValueAtIndex(0).GetValueType(), lldb.eValueTypeVariableArgument)
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self.assertEqual(variables.GetValueAtIndex(1).name, "b")
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self.assertEqual(variables.GetValueAtIndex(1).signed, 56)
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self.assertEqual(variables.GetValueAtIndex(1).GetValueType(), lldb.eValueTypeVariableArgument)
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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self.expect("frame recognizer info 999", error=True,
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substrs=['no frame with index 999'])
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self.expect("frame recognizer info 1",
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substrs=['frame 1 not recognized by any recognizer'])
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# FIXME: The following doesn't work yet, but should be fixed.
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"""
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "bar",
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exe_name = exe)
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frame = thread.GetSelectedFrame()
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped', 'stop reason = breakpoint'])
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self.expect("frame variable -t",
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substrs=['(int *) a = '])
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self.expect("frame variable -t *a",
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substrs=['*a = 78'])
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"""
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@skipUnlessDarwin
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def test_frame_recognizer_multi_symbol(self):
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Clear internal & plugins recognizers that get initialized at launch
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self.runCmd("frame recognizer clear")
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self.runCmd("command script import " + os.path.join(self.getSourceDir(), "recognizer.py"))
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self.expect("frame recognizer list",
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substrs=['no matching results found.'])
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo -n bar")
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self.expect("frame recognizer list",
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substrs=['recognizer.MyFrameRecognizer, module a.out, symbol foo, symbol bar'])
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "foo",
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exe_name = exe)
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frame = thread.GetSelectedFrame()
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "bar",
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exe_name = exe)
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frame = thread.GetSelectedFrame()
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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@skipUnlessDarwin
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def test_frame_recognizer_target_specific(self):
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Clear internal & plugins recognizers that get initialized at launch
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self.runCmd("frame recognizer clear")
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# Create a target.
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "foo",
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exe_name = exe)
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self.runCmd("command script import " + os.path.join(self.getSourceDir(), "recognizer.py"))
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# Check that this doesn't contain our own FrameRecognizer somehow.
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self.expect("frame recognizer list",
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matching=False, substrs=['MyFrameRecognizer'])
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# Add a frame recognizer in that target.
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo -n bar")
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self.expect("frame recognizer list",
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substrs=['recognizer.MyFrameRecognizer, module a.out, symbol foo, symbol bar'])
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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# Create a second target. That one shouldn't have the frame recognizer.
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "bar",
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exe_name = exe)
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self.expect("frame recognizer info 0",
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substrs=['frame 0 not recognized by any recognizer'])
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# Add a frame recognizer to the new target.
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n bar")
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self.expect("frame recognizer list",
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substrs=['recognizer.MyFrameRecognizer, module a.out, symbol bar'])
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# Now the new target should also recognize the frame.
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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@skipUnlessDarwin
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def test_frame_recognizer_not_only_first_instruction(self):
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Clear internal & plugins recognizers that get initialized at launch.
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self.runCmd("frame recognizer clear")
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self.runCmd("command script import " + os.path.join(self.getSourceDir(), "recognizer.py"))
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self.expect("frame recognizer list",
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substrs=['no matching results found.'])
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# Create a target.
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target, process, thread, _ = lldbutil.run_to_name_breakpoint(self, "foo",
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exe_name = exe)
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# Move the PC one instruction further.
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self.runCmd("next")
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# Add a frame recognizer in that target.
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo -n bar")
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# It's not applied to foo(), because frame's PC is not at the first instruction of the function.
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self.expect("frame recognizer info 0",
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substrs=['frame 0 not recognized by any recognizer'])
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# Add a frame recognizer with --first-instruction-only=true.
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self.runCmd("frame recognizer clear")
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo -n bar --first-instruction-only=true")
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# It's not applied to foo(), because frame's PC is not at the first instruction of the function.
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self.expect("frame recognizer info 0",
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substrs=['frame 0 not recognized by any recognizer'])
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# Now add a frame recognizer with --first-instruction-only=false.
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self.runCmd("frame recognizer clear")
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self.runCmd("frame recognizer add -l recognizer.MyFrameRecognizer -s a.out -n foo -n bar --first-instruction-only=false")
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# This time it should recognize the frame.
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self.expect("frame recognizer info 0",
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substrs=['frame 0 is recognized by recognizer.MyFrameRecognizer'])
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opts = lldb.SBVariablesOptions()
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opts.SetIncludeRecognizedArguments(True)
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frame = thread.GetSelectedFrame()
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variables = frame.GetVariables(opts)
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self.assertEqual(variables.GetSize(), 2)
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self.assertEqual(variables.GetValueAtIndex(0).name, "a")
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self.assertEqual(variables.GetValueAtIndex(0).signed, 42)
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self.assertEqual(variables.GetValueAtIndex(0).GetValueType(), lldb.eValueTypeVariableArgument)
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self.assertEqual(variables.GetValueAtIndex(1).name, "b")
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self.assertEqual(variables.GetValueAtIndex(1).signed, 56)
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self.assertEqual(variables.GetValueAtIndex(1).GetValueType(), lldb.eValueTypeVariableArgument)
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@no_debug_info_test
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def test_frame_recognizer_delete_invalid_arg(self):
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self.expect("frame recognizer delete a", error=True,
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substrs=["error: 'a' is not a valid recognizer id."])
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self.expect("frame recognizer delete \"\"", error=True,
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substrs=["error: '' is not a valid recognizer id."])
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self.expect("frame recognizer delete -1", error=True,
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substrs=["error: '-1' is not a valid recognizer id."])
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self.expect("frame recognizer delete 4294967297", error=True,
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substrs=["error: '4294967297' is not a valid recognizer id."])
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@no_debug_info_test
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def test_frame_recognizer_info_invalid_arg(self):
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self.expect("frame recognizer info a", error=True,
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substrs=["error: 'a' is not a valid frame index."])
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self.expect("frame recognizer info \"\"", error=True,
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substrs=["error: '' is not a valid frame index."])
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self.expect("frame recognizer info -1", error=True,
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substrs=["error: '-1' is not a valid frame index."])
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self.expect("frame recognizer info 4294967297", error=True,
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substrs=["error: '4294967297' is not a valid frame index."])
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@no_debug_info_test
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def test_frame_recognizer_add_invalid_arg(self):
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self.expect("frame recognizer add -f", error=True,
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substrs=["error: last option requires an argument"])
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self.expect("frame recognizer add -f -1", error=True,
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substrs=["error: invalid boolean value '-1' passed for -f option"])
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self.expect("frame recognizer add -f foo", error=True,
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substrs=["error: invalid boolean value 'foo' passed for -f option"])
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