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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
224 lines
9.4 KiB
Python
224 lines
9.4 KiB
Python
"""
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Use lldb Python API to test dynamic values in C++
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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 DynamicValueTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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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 for main.c.
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self.do_something_line = line_number('pass-to-base.cpp', '// Break here in doSomething.')
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self.main_first_call_line = line_number('pass-to-base.cpp',
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'// Break here and get real addresses of myB and otherB.')
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self.main_second_call_line = line_number('pass-to-base.cpp',
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'// Break here and get real address of reallyA.')
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@expectedFailureFreeBSD # FIXME: This needs to be root-caused.
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@expectedFailureWindows("llvm.org/pr24663")
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@add_test_categories(['pyapi'])
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def test_get_dynamic_vals(self):
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"""Test fetching C++ dynamic values from pointers & references."""
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self.build(dictionary=self.getBuildFlags())
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exe = os.path.join(os.getcwd(), "a.out")
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# Create a target from the debugger.
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target = self.dbg.CreateTarget (exe)
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self.assertTrue(target, VALID_TARGET)
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# Set up our breakpoints:
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do_something_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.do_something_line)
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self.assertTrue(do_something_bpt,
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VALID_BREAKPOINT)
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first_call_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.main_first_call_line)
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self.assertTrue(first_call_bpt,
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VALID_BREAKPOINT)
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second_call_bpt = target.BreakpointCreateByLocation('pass-to-base.cpp', self.main_second_call_line)
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self.assertTrue(second_call_bpt,
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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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self.assertTrue(process.GetState() == lldb.eStateStopped,
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PROCESS_STOPPED)
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, first_call_bpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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# Now find the dynamic addresses of myB and otherB so we can compare them
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# with the dynamic values we get in doSomething:
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use_dynamic = lldb.eDynamicCanRunTarget
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no_dynamic = lldb.eNoDynamicValues
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myB = frame.FindVariable ('myB', no_dynamic);
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self.assertTrue (myB)
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myB_loc = int (myB.GetLocation(), 16)
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otherB = frame.FindVariable('otherB', no_dynamic)
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self.assertTrue (otherB)
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otherB_loc = int (otherB.GetLocation(), 16)
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# Okay now run to doSomething:
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threads = lldbutil.continue_to_breakpoint (process, do_something_bpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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# Get "this" using FindVariable:
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this_static = frame.FindVariable ('this', no_dynamic)
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this_dynamic = frame.FindVariable ('this', use_dynamic)
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self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc)
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# Now make sure that the "GetDynamicValue" works:
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# This doesn't work currently because we can't get dynamic values from ConstResult objects.
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fetched_dynamic_value = this_static.GetDynamicValue(use_dynamic)
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self.examine_value_object_of_this_ptr (this_static, fetched_dynamic_value, myB_loc)
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# And conversely that the GetDynamicValue() interface also works:
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fetched_static_value = this_dynamic.GetStaticValue()
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self.examine_value_object_of_this_ptr (fetched_static_value, this_dynamic, myB_loc)
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# Get "this" using FindValue, make sure that works too:
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this_static = frame.FindValue ('this', lldb.eValueTypeVariableArgument, no_dynamic)
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this_dynamic = frame.FindValue ('this', lldb.eValueTypeVariableArgument, use_dynamic)
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self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc)
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# Get "this" using the EvaluateExpression:
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this_static = frame.EvaluateExpression ('this', False)
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this_dynamic = frame.EvaluateExpression ('this', True)
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self.examine_value_object_of_this_ptr (this_static, this_dynamic, myB_loc)
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# The "frame var" code uses another path to get into children, so let's
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# make sure that works as well:
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self.expect('frame var -d run-target --ptr-depth=2 --show-types anotherA.m_client_A', 'frame var finds its way into a child member',
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patterns = ['\(B \*\)'])
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# Now make sure we also get it right for a reference as well:
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anotherA_static = frame.FindVariable ('anotherA', False)
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self.assertTrue (anotherA_static)
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anotherA_static_addr = int (anotherA_static.GetValue(), 16)
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anotherA_dynamic = frame.FindVariable ('anotherA', True)
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self.assertTrue (anotherA_dynamic)
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anotherA_dynamic_addr = int (anotherA_dynamic.GetValue(), 16)
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anotherA_dynamic_typename = anotherA_dynamic.GetTypeName()
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self.assertTrue (anotherA_dynamic_typename.find('B') != -1)
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self.assertTrue(anotherA_dynamic_addr < anotherA_static_addr)
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anotherA_m_b_value_dynamic = anotherA_dynamic.GetChildMemberWithName('m_b_value', True)
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self.assertTrue (anotherA_m_b_value_dynamic)
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anotherA_m_b_val = int (anotherA_m_b_value_dynamic.GetValue(), 10)
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self.assertTrue (anotherA_m_b_val == 300)
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anotherA_m_b_value_static = anotherA_static.GetChildMemberWithName('m_b_value', True)
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self.assertFalse (anotherA_m_b_value_static)
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# Okay, now continue again, and when we hit the second breakpoint in main
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threads = lldbutil.continue_to_breakpoint (process, second_call_bpt)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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reallyA_value = frame.FindVariable ('reallyA', False)
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self.assertTrue(reallyA_value)
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reallyA_loc = int (reallyA_value.GetLocation(), 16)
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# Finally continue to doSomething again, and make sure we get the right value for anotherA,
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# which this time around is just an "A".
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threads = lldbutil.continue_to_breakpoint (process, do_something_bpt)
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self.assertTrue(len(threads) == 1)
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thread = threads[0]
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frame = thread.GetFrameAtIndex(0)
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anotherA_value = frame.FindVariable ('anotherA', True)
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self.assertTrue(anotherA_value)
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anotherA_loc = int (anotherA_value.GetValue(), 16)
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self.assertTrue (anotherA_loc == reallyA_loc)
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self.assertTrue (anotherA_value.GetTypeName().find ('B') == -1)
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def examine_value_object_of_this_ptr (self, this_static, this_dynamic, dynamic_location):
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# Get "this" as its static value
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self.assertTrue (this_static)
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this_static_loc = int (this_static.GetValue(), 16)
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# Get "this" as its dynamic value
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self.assertTrue (this_dynamic)
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this_dynamic_typename = this_dynamic.GetTypeName()
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self.assertTrue (this_dynamic_typename.find('B') != -1)
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this_dynamic_loc = int (this_dynamic.GetValue(), 16)
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# Make sure we got the right address for "this"
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self.assertTrue (this_dynamic_loc == dynamic_location)
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# And that the static address is greater than the dynamic one
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self.assertTrue (this_static_loc > this_dynamic_loc)
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# Now read m_b_value which is only in the dynamic value:
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use_dynamic = lldb.eDynamicCanRunTarget
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no_dynamic = lldb.eNoDynamicValues
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this_dynamic_m_b_value = this_dynamic.GetChildMemberWithName('m_b_value', use_dynamic)
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self.assertTrue (this_dynamic_m_b_value)
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m_b_value = int (this_dynamic_m_b_value.GetValue(), 0)
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self.assertTrue (m_b_value == 10)
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# Make sure it is not in the static version
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this_static_m_b_value = this_static.GetChildMemberWithName('m_b_value', no_dynamic)
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self.assertFalse (this_static_m_b_value)
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# Okay, now let's make sure that we can get the dynamic type of a child element:
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contained_auto_ptr = this_dynamic.GetChildMemberWithName ('m_client_A', use_dynamic)
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self.assertTrue (contained_auto_ptr)
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contained_b = contained_auto_ptr.GetChildMemberWithName ('_M_ptr', use_dynamic)
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if not contained_b:
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contained_b = contained_auto_ptr.GetChildMemberWithName ('__ptr_', use_dynamic)
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self.assertTrue (contained_b)
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contained_b_static = contained_auto_ptr.GetChildMemberWithName ('_M_ptr', no_dynamic)
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if not contained_b_static:
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contained_b_static = contained_auto_ptr.GetChildMemberWithName ('__ptr_', no_dynamic)
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self.assertTrue (contained_b_static)
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contained_b_addr = int (contained_b.GetValue(), 16)
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contained_b_static_addr = int (contained_b_static.GetValue(), 16)
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self.assertTrue (contained_b_addr < contained_b_static_addr)
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