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https://github.com/Gericom/teak-llvm.git
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68ddb76807
This is a set of tests that were all marked as failing becuse of several different bugs. A couple of the bugs are now resolved as fixed since all the tests that were failing associated with the bug are now passing. It is possible that some of them are false positives, but there's a large number of unexpectedly passing tests on Windows, so I am doing a bulk un-xfail to get the buildbot to green. llvm-svn: 349711
225 lines
8.5 KiB
Python
225 lines
8.5 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
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import time
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import re
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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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class FrameAPITestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@add_test_categories(['pyapi'])
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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 = self.getBuildArtifact("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(
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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 = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertIsNotNone(thread)
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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
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# 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_int = int(pc_value.GetValue(), 0)
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# Make sure on arm targets we dont mismatch PC value on the basis of thumb bit.
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# Frame PC will not have thumb bit set in case of a thumb
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# instruction as PC.
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if self.getArchitecture() in ['arm', 'armv7', 'armv7k']:
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pc_value_int &= ~1
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self.assertTrue(
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pc_value_int == frame.GetPC(),
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"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(
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sp_value, "We should have a valid Stack Pointer.")
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self.assertTrue(int(sp_value.GetValue(), 0) == frame.GetSP(
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), "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(
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process.GetState() == lldb.eStateExited,
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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 = self.getBuildArtifact("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(
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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 = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertIsNotNone(thread)
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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 = self.getBuildArtifact("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(
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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 = lldbutil.get_stopped_thread(
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process, lldb.eStopReasonBreakpoint)
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self.assertIsNotNone(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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