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https://github.com/Gericom/teak-llvm.git
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95c453a221
For convenience, we had added the folder that dotest.py was in to sys.path, so that we could easily write things like `import lldbutil` from anywhere and any test. This introduces a subtle problem when using Python's package system, because when unittest2 imports a particular test suite, the test suite is detached from the package. Thus, writing "import lldbutil" from dotest imports it as part of the package, and writing the same line from a test does a fresh import since the importing module was not part of the same package. The real way to fix this is to use absolute imports everywhere. Instead of writing "import lldbutil", we need to write "import lldbsuite.test.util". This patch fixes up that and all other similar cases, and additionally removes the script directory from sys.path to ensure that this can't happen again. llvm-svn: 251886
205 lines
7.9 KiB
Python
205 lines
7.9 KiB
Python
"""
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Use lldb Python SBFrame API to get the argument values of the call stacks.
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And other SBFrame API tests.
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"""
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from __future__ import print_function
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import use_lldb_suite
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import os, time
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import re
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import lldb
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import lldbsuite.test.lldbutil as lldbutil
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from lldbsuite.test.lldbtest import *
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class FrameAPITestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@add_test_categories(['pyapi'])
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@expectedFailureWindows("llvm.org/pr24778")
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def test_get_arg_vals_for_call_stack(self):
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"""Exercise SBFrame.GetVariables() API to get argument vals."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now create a breakpoint on main.c by name 'c'.
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breakpoint = target.BreakpointCreateByName('c', 'a.out')
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#print("breakpoint:", breakpoint)
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self.assertTrue(breakpoint and
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breakpoint.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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# Now launch the process, and do not stop at the entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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process = target.GetProcess()
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self.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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# Keeps track of the number of times 'a' is called where it is within a
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# depth of 3 of the 'c' leaf function.
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callsOfA = 0
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from six import StringIO as SixStringIO
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session = SixStringIO()
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while process.GetState() == lldb.eStateStopped:
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thread = process.GetThreadAtIndex(0)
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# Inspect at most 3 frames.
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numFrames = min(3, thread.GetNumFrames())
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for i in range(numFrames):
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frame = thread.GetFrameAtIndex(i)
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if self.TraceOn():
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print("frame:", frame)
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name = frame.GetFunction().GetName()
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if name == 'a':
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callsOfA = callsOfA + 1
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# We'll inspect only the arguments for the current frame:
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#
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# arguments => True
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# locals => False
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# statics => False
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# in_scope_only => True
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valList = frame.GetVariables(True, False, False, True)
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argList = []
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for val in valList:
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argList.append("(%s)%s=%s" % (val.GetTypeName(),
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val.GetName(),
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val.GetValue()))
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print("%s(%s)" % (name, ", ".join(argList)), file=session)
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# Also check the generic pc & stack pointer. We can't test their absolute values,
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# but they should be valid. Uses get_GPRs() from the lldbutil module.
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gpr_reg_set = lldbutil.get_GPRs(frame)
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pc_value = gpr_reg_set.GetChildMemberWithName("pc")
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self.assertTrue (pc_value, "We should have a valid PC.")
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pc_value_str = pc_value.GetValue()
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self.assertTrue (pc_value_str, "We should have a valid PC string.")
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self.assertTrue (int(pc_value_str, 0) == frame.GetPC(), "PC gotten as a value should equal frame's GetPC")
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sp_value = gpr_reg_set.GetChildMemberWithName("sp")
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self.assertTrue (sp_value, "We should have a valid Stack Pointer.")
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self.assertTrue (int(sp_value.GetValue(), 0) == frame.GetSP(), "SP gotten as a value should equal frame's GetSP")
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print("---", file=session)
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process.Continue()
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# At this point, the inferior process should have exited.
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self.assertTrue(process.GetState() == lldb.eStateExited, PROCESS_EXITED)
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# Expect to find 'a' on the call stacks two times.
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self.assertTrue(callsOfA == 2,
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"Expect to find 'a' on the call stacks two times")
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# By design, the 'a' call frame has the following arg vals:
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# o a((int)val=1, (char)ch='A')
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# o a((int)val=3, (char)ch='A')
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if self.TraceOn():
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print("Full stack traces when stopped on the breakpoint 'c':")
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print(session.getvalue())
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self.expect(session.getvalue(), "Argugment values displayed correctly",
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exe=False,
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substrs = ["a((int)val=1, (char)ch='A')",
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"a((int)val=3, (char)ch='A')"])
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@add_test_categories(['pyapi'])
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def test_frame_api_boundary_condition(self):
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"""Exercise SBFrame APIs with boundary condition inputs."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now create a breakpoint on main.c by name 'c'.
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breakpoint = target.BreakpointCreateByName('c', 'a.out')
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#print("breakpoint:", breakpoint)
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self.assertTrue(breakpoint and
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breakpoint.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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# Now launch the process, and do not stop at the entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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process = target.GetProcess()
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self.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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thread = process.GetThreadAtIndex(0)
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frame = thread.GetFrameAtIndex(0)
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if self.TraceOn():
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print("frame:", frame)
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# Boundary condition testings.
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val1 = frame.FindVariable(None, True)
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val2 = frame.FindVariable(None, False)
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val3 = frame.FindValue(None, lldb.eValueTypeVariableGlobal)
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if self.TraceOn():
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print("val1:", val1)
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print("val2:", val2)
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frame.EvaluateExpression(None)
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@add_test_categories(['pyapi'])
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def test_frame_api_IsEqual(self):
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"""Exercise SBFrame API IsEqual."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now create a breakpoint on main.c by name 'c'.
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breakpoint = target.BreakpointCreateByName('c', 'a.out')
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#print("breakpoint:", breakpoint)
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self.assertTrue(breakpoint and
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breakpoint.GetNumLocations() == 1,
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VALID_BREAKPOINT)
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# Now launch the process, and do not stop at the entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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process = target.GetProcess()
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self.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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thread = process.GetThreadAtIndex(0)
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self.assertTrue(thread)
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frameEntered = thread.GetFrameAtIndex(0)
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if self.TraceOn():
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print(frameEntered)
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lldbutil.print_stacktrace(thread)
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self.assertTrue(frameEntered)
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# Doing two step overs while still inside c().
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thread.StepOver()
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thread.StepOver()
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self.assertTrue(thread)
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frameNow = thread.GetFrameAtIndex(0)
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if self.TraceOn():
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print(frameNow)
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lldbutil.print_stacktrace(thread)
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self.assertTrue(frameNow)
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# The latest two frames are considered equal.
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self.assertTrue(frameEntered.IsEqual(frameNow))
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# Now let's step out of frame c().
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thread.StepOutOfFrame(frameNow)
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frameOutOfC = thread.GetFrameAtIndex(0)
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if self.TraceOn():
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print(frameOutOfC)
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lldbutil.print_stacktrace(thread)
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self.assertTrue(frameOutOfC)
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# The latest two frames should not be equal.
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self.assertFalse(frameOutOfC.IsEqual(frameNow))
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