33c0f93f6c
This infrastructure has proven proven its worth, so give it a more prominent place. My immediate motivation for this is the desire to reuse this infrastructure for qemu platform testing, but I believe this move makes sense independently of that. Moving this code to the packages tree will allow as to add more structure to the gdb client tests -- currently they are all crammed into the same test folder as that was the only way they could access this code. I'm splitting the code into two parts while moving it. The first once contains just the generic gdb protocol wrappers, while the other one contains the unit test glue. The reason for that is that for qemu testing, I need to run the gdb code in a separate process, so I will only be using the first part there. Differential Revision: https://reviews.llvm.org/D113893
144 lines
5.4 KiB
Python
144 lines
5.4 KiB
Python
import lldb
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test.decorators import *
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from lldbsuite.test.gdbclientutils import *
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from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
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class TestRecognizeBreakpoint(GDBRemoteTestBase):
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mydir = TestBase.compute_mydir(__file__)
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""" This tests the case where the gdb-remote server doesn't support any
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of the thread-info packets, and just tells which thread got the stop
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signal with:
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T05thread:01;
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There was a bug in lldb that we would set the stop reason from this
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packet too early - before we had updated the thread list. So when we
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later updated the thread list, we would throw away this info. Normally
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we would be able to reconstruct it from the thread info, but not if the
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stub doesn't support it """
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@skipIfXmlSupportMissing
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def test(self):
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class MyResponder(MockGDBServerResponder):
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def __init__(self):
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MockGDBServerResponder.__init__(self)
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self.thread_info_count = 0
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self.after_cont = False
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self.current_thread = 0
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def cont(self):
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# Simulate process stopping due to a breakpoint:
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self.after_cont = True
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return "T05thread:01;"
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def vCont(self, packet):
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self.after_cont = True
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return "T05thread:01;"
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def haltReason(self):
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return "T02thread:01;"
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def threadStopInfo(self, num):
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return ""
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def QThreadSuffixSupported(self):
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return ""
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def QListThreadsInStopReply(self):
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return ""
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def setBreakpoint(self, packet):
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return "OK"
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def qfThreadInfo(self):
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return "m1"
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def qsThreadInfo(self):
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if (self.thread_info_count % 2) == 0:
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str = "m2"
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else:
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str = "l"
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self.thread_info_count += 1
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return str
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def readRegisters(self):
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if self.after_cont and self.current_thread == 1:
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return "c01e990080ffffff"
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else:
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return "badcfe10325476980"
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def readRegister(self, regno):
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return ""
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def qXferRead(self, obj, annex, offset, length):
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if annex == "target.xml":
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return """<?xml version="1.0"?>
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<target version="1.0">
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<architecture>i386:x86-64</architecture>
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<feature name="org.gnu.gdb.i386.core">
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<reg name="rip" bitsize="64" regnum="0" type="code_ptr" group="general"/>
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</feature>
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</target>""", False
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else:
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return None, False
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def selectThread(self, op, thread):
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if op != 'g':
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return ''
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self.current_thread = thread
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return "OK"
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def other (self, packet):
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if packet == "vCont?":
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return "vCont;c;C;s;S"
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return ''
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python_os_plugin_path = os.path.join(self.getSourceDir(),
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'operating_system_2.py')
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command ="settings set target.process.python-os-plugin-path '{}'".format(
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python_os_plugin_path)
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self.runCmd(command)
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self.server.responder = MyResponder()
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target = self.dbg.CreateTarget("")
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process = self.connect(target)
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bkpt = target.BreakpointCreateByAddress(0xffffff8000991ec0)
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self.assertEqual(bkpt.GetNumLocations(), 1, "Fake breakpoint was resolved.")
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# Get the initial stop, and we should have two threads.
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num_threads = len(process.threads)
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self.assertEqual(num_threads, 2, "Got two threads")
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thread_0 = process.threads[0]
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self.assertEqual(thread_0.GetStopReason(), 1, "Thread_0 stopped for no reason")
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self.assertEqual(thread_0.GetName(), "one", "Thread_0 is called one")
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thread_1 = process.threads[1]
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self.assertEqual(thread_1.GetStopReason(), 5, "Thread_0 stopped for SIGSTOP")
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self.assertEqual(thread_1.GetName(), "two", "Thread_0 is called two")
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# Now continue and we will fake hitting a breakpoint.
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process.Continue()
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self.assertEqual(process.GetState(),lldb.eStateStopped, "Process is stopped")
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num_threads = len(process.threads)
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num_threads = len(process.threads)
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self.assertEqual(num_threads, 2, "Got two threads")
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thread_0 = process.threads[0]
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self.assertEqual(thread_0.GetStopReason(), 1, "Thread_0 stopped for no reason")
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self.assertEqual(thread_0.GetName(), "one", "Thread_0 is called one")
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thread_1 = process.threads[1]
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self.assertEqual(thread_1.GetStopReason(), 3, "Thread_0 stopped for SIGTRAP")
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self.assertEqual(thread_1.GetName(), "three", "Thread_0 is called three")
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self.assertTrue(thread_1.IsValid(), "Thread_1 is valid")
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self.assertEqual(thread_1.GetStopReason(), lldb.eStopReasonBreakpoint, "Stopped at breakpoint")
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