1e566f6b47
Add the skipIfReproducer decorator to the remaining tests that fail to replay because the GDB remote packets diverge during replay. This is *not* expected and should be fixed, but figuring out exactly what caused the divergence has proven pretty difficult to track down. I've marked these tests as skipped for now so we can get clean results and detect new regressions. I have no evidence to believe that these failures have the same root cause, so I've not assigned them a PR.
146 lines
6.4 KiB
Python
146 lines
6.4 KiB
Python
import lldb
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import binascii
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test.decorators import *
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from gdbclientutils import *
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class TestGDBRemoteClient(GDBRemoteTestBase):
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class gPacketResponder(MockGDBServerResponder):
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def readRegisters(self):
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return '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
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def test_connect(self):
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"""Test connecting to a remote gdb server"""
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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self.assertPacketLogContains(["qProcessInfo", "qfThreadInfo"])
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@skipIfReproducer # Unexpected packet during replay
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def test_attach_fail(self):
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error_msg = "mock-error-msg"
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class MyResponder(MockGDBServerResponder):
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# Pretend we don't have any process during the initial queries.
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def qC(self):
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return "E42"
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def qfThreadInfo(self):
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return "OK" # No threads.
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# Then, when we are asked to attach, error out.
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def vAttach(self, pid):
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return "E42;" + binascii.hexlify(error_msg.encode()).decode()
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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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lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateConnected])
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error = lldb.SBError()
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target.AttachToProcessWithID(lldb.SBListener(), 47, error)
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self.assertEquals(error_msg, error.GetCString())
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def test_launch_fail(self):
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class MyResponder(MockGDBServerResponder):
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# Pretend we don't have any process during the initial queries.
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def qC(self):
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return "E42"
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def qfThreadInfo(self):
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return "OK" # No threads.
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# Then, when we are asked to attach, error out.
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def A(self, packet):
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return "E47"
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self.runCmd("log enable gdb-remote packets")
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self.server.responder = MyResponder()
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateConnected])
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error = lldb.SBError()
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target.Launch(lldb.SBListener(), None, None, None, None, None,
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None, 0, True, error)
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self.assertEquals("'A' packet returned an error: 71", error.GetCString())
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def test_read_registers_using_g_packets(self):
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"""Test reading registers using 'g' packets (default behavior)"""
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self.dbg.HandleCommand(
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"settings set plugin.process.gdb-remote.use-g-packet-for-reading true")
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self.addTearDownHook(lambda:
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self.runCmd("settings set plugin.process.gdb-remote.use-g-packet-for-reading false"))
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self.server.responder = self.gPacketResponder()
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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self.assertEquals(1, self.server.responder.packetLog.count("g"))
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self.server.responder.packetLog = []
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self.read_registers(process)
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# Reading registers should not cause any 'p' packets to be exchanged.
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self.assertEquals(
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0, len([p for p in self.server.responder.packetLog if p.startswith("p")]))
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def test_read_registers_using_p_packets(self):
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"""Test reading registers using 'p' packets"""
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self.dbg.HandleCommand(
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"settings set plugin.process.gdb-remote.use-g-packet-for-reading false")
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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self.read_registers(process)
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self.assertFalse("g" in self.server.responder.packetLog)
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self.assertGreater(
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len([p for p in self.server.responder.packetLog if p.startswith("p")]), 0)
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def test_write_registers_using_P_packets(self):
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"""Test writing registers using 'P' packets (default behavior)"""
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self.server.responder = self.gPacketResponder()
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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self.write_registers(process)
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self.assertEquals(0, len(
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[p for p in self.server.responder.packetLog if p.startswith("G")]))
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self.assertGreater(
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len([p for p in self.server.responder.packetLog if p.startswith("P")]), 0)
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def test_write_registers_using_G_packets(self):
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"""Test writing registers using 'G' packets"""
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class MyResponder(self.gPacketResponder):
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def readRegister(self, register):
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# empty string means unsupported
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return ""
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self.server.responder = MyResponder()
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target = self.createTarget("a.yaml")
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process = self.connect(target)
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self.write_registers(process)
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self.assertEquals(0, len(
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[p for p in self.server.responder.packetLog if p.startswith("P")]))
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self.assertGreater(len(
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[p for p in self.server.responder.packetLog if p.startswith("G")]), 0)
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def read_registers(self, process):
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self.for_each_gpr(
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process, lambda r: self.assertEquals("0x00000000", r.GetValue()))
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def write_registers(self, process):
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self.for_each_gpr(
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process, lambda r: r.SetValueFromCString("0x00000000"))
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def for_each_gpr(self, process, operation):
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registers = process.GetThreadAtIndex(0).GetFrameAtIndex(0).GetRegisters()
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self.assertGreater(registers.GetSize(), 0)
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regSet = registers[0]
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numChildren = regSet.GetNumChildren()
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self.assertGreater(numChildren, 0)
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for i in range(numChildren):
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operation(regSet.GetChildAtIndex(i))
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