127 lines
5.7 KiB
Python
127 lines
5.7 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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# This test case checks for register number mismatch between lldb and gdb stub.
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# LLDB client assigns register numbers to target xml registers in increasing
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# order starting with regnum = 0, while gdb-remote may specify different regnum
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# which is stored as eRegisterKindProcessPlugin. Remote side will use its
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# register number in expedited register list, value_regs and invalidate_regnums.
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#
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# This test creates a ficticious target xml with non-sequential regnums to test
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# that correct registers are accessed in all of above mentioned cases.
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class TestRemoteRegNums(GDBRemoteTestBase):
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@skipIfXmlSupportMissing
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def test(self):
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class MyResponder(MockGDBServerResponder):
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def haltReason(self):
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return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"
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def threadStopInfo(self, threadnum):
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return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"
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def writeRegisters(self):
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return "E02"
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def readRegisters(self):
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return "E01"
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rax_regnum2_val = "7882773ce0ffffff"
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rbx_regnum4_val = "1122334455667788"
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def readRegister(self, regnum):
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# lldb will try sending "p0" to see if the p packet is supported,
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# give a bogus value; in theory lldb could use this value in the
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# register context and that would be valid behavior.
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# notably, don't give values for registers 1 & 3 -- lldb should
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# get those from the ? stop packet ("T11") and it is a pref regression
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# if lldb is asking for these register values.
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if regnum == 0:
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return "5555555555555555"
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if regnum == 2:
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return self.rax_regnum2_val
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if regnum == 4:
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return self.rbx_regnum4_val
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return "E03"
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def writeRegister(self, regnum, value_hex):
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if regnum == 2:
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self.rax_regnum2_val = value_hex
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if regnum == 4:
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self.rbx_regnum4_val = value_hex
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return "OK"
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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" altname="pc" generic="pc"/>
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<reg name="rax" bitsize="64" regnum="2" type="code_ptr" group="general"/>
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<reg name="rbx" bitsize="64" regnum="4" type="code_ptr" group="general"/>
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<reg name="eax" bitsize="32" regnum="5" value_regnums="2" invalidate_regnums="2" type="code_ptr" group="general"/>
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<reg name="ebx" bitsize="32" regnum="7" value_regnums="4" invalidate_regnums="4" type="code_ptr" group="general"/>
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<reg name="rsi" bitsize="64" regnum="9" 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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self.server.responder = MyResponder()
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target = self.dbg.CreateTarget('')
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if self.TraceOn():
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self.runCmd("log enable gdb-remote packets")
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self.addTearDownHook(
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lambda: self.runCmd("log disable gdb-remote packets"))
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process = self.connect(target)
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thread = process.GetThreadAtIndex(0)
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frame = thread.GetFrameAtIndex(0)
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rax = frame.FindRegister("rax").GetValueAsUnsigned()
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eax = frame.FindRegister("eax").GetValueAsUnsigned()
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rbx = frame.FindRegister("rbx").GetValueAsUnsigned()
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ebx = frame.FindRegister("ebx").GetValueAsUnsigned()
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rsi = frame.FindRegister("rsi").GetValueAsUnsigned()
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pc = frame.GetPC()
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rip = frame.FindRegister("rip").GetValueAsUnsigned()
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if self.TraceOn():
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print("Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x" % (
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rax, rbx, rsi, pc, rip))
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self.assertEqual(rax, 0xffffffe03c778278)
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self.assertEqual(rbx, 0x8877665544332211)
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self.assertEqual(eax, 0x3c778278)
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self.assertEqual(ebx, 0x44332211)
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self.assertEqual(rsi, 0x00007ffeeb2548c0)
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self.assertEqual(pc, 0x10001bc00)
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self.assertEqual(rip, 0x10001bc00)
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frame.FindRegister("eax").SetValueFromCString("1")
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frame.FindRegister("ebx").SetValueFromCString("0")
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eax = frame.FindRegister("eax").GetValueAsUnsigned()
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ebx = frame.FindRegister("ebx").GetValueAsUnsigned()
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rax = frame.FindRegister("rax").GetValueAsUnsigned()
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rbx = frame.FindRegister("rbx").GetValueAsUnsigned()
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if self.TraceOn():
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print("Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x" % (
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rax, rbx, rsi, pc, rip))
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self.assertEqual(rax, 0xffffffe000000001)
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self.assertEqual(rbx, 0x8877665500000000)
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self.assertEqual(eax, 0x00000001)
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self.assertEqual(ebx, 0x00000000)
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self.assertEqual(rsi, 0x00007ffeeb2548c0)
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self.assertEqual(pc, 0x10001bc00)
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self.assertEqual(rip, 0x10001bc00)
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