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https://github.com/Gericom/teak-llvm.git
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19474e1801
This module was originally intended to be imported by top-level scripts to be able to find the LLDB packages and third party libraries. Packages themselves shouldn't need to import it, because by the time it gets into the package, the top-level script should have already done this. Indeed, it was just adding the same values to sys.path multiple times, so this patch is essentially no functional change. To make sure it doesn't get re-introduced, we also delete the `use_lldb_suite` module from `lldbsuite/test`, although the original copy still remains in `lldb/test` llvm-svn: 251963
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 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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