import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
from lldbsuite.test.gdbclientutils import *
from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
# This test case checks for register number mismatch between lldb and gdb stub.
# LLDB client assigns register numbers to target xml registers in increasing
# order starting with regnum = 0, while gdb-remote may specify different regnum
# which is stored as eRegisterKindProcessPlugin. Remote side will use its
# register number in expedited register list, value_regs and invalidate_regnums.
#
# This test creates a ficticious target xml with non-sequential regnums to test
# that correct registers are accessed in all of above mentioned cases.
class TestRemoteRegNums(GDBRemoteTestBase):
@skipIfXmlSupportMissing
def test(self):
class MyResponder(MockGDBServerResponder):
def haltReason(self):
return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"
def threadStopInfo(self, threadnum):
return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"
def writeRegisters(self):
return "E02"
def readRegisters(self):
return "E01"
rax_regnum2_val = "7882773ce0ffffff"
rbx_regnum4_val = "1122334455667788"
def readRegister(self, regnum):
# lldb will try sending "p0" to see if the p packet is supported,
# give a bogus value; in theory lldb could use this value in the
# register context and that would be valid behavior.
# notably, don't give values for registers 1 & 3 -- lldb should
# get those from the ? stop packet ("T11") and it is a pref regression
# if lldb is asking for these register values.
if regnum == 0:
return "5555555555555555"
if regnum == 2:
return self.rax_regnum2_val
if regnum == 4:
return self.rbx_regnum4_val
return "E03"
def writeRegister(self, regnum, value_hex):
if regnum == 2:
self.rax_regnum2_val = value_hex
if regnum == 4:
self.rbx_regnum4_val = value_hex
return "OK"
def qXferRead(self, obj, annex, offset, length):
if annex == "target.xml":
return (
"""<?xml version="1.0"?>
<target version="1.0">
<architecture>i386:x86-64</architecture>
<feature name="org.gnu.gdb.i386.core">
<reg name="rip" bitsize="64" regnum="0" type="code_ptr" group="general" altname="pc" generic="pc"/>
<reg name="rax" bitsize="64" regnum="2" type="code_ptr" group="general"/>
<reg name="rbx" bitsize="64" regnum="4" type="code_ptr" group="general"/>
<reg name="eax" bitsize="32" regnum="5" value_regnums="2" invalidate_regnums="2" type="code_ptr" group="general"/>
<reg name="ebx" bitsize="32" regnum="7" value_regnums="4" invalidate_regnums="4" type="code_ptr" group="general"/>
<reg name="rsi" bitsize="64" regnum="9" type="code_ptr" group="general"/>
</feature>
</target>""",
False,
)
else:
return None, False
self.server.responder = MyResponder()
target = self.dbg.CreateTarget("")
if self.TraceOn():
self.runCmd("log enable gdb-remote packets")
self.addTearDownHook(lambda: self.runCmd("log disable gdb-remote packets"))
process = self.connect(target)
thread = process.GetThreadAtIndex(0)
frame = thread.GetFrameAtIndex(0)
rax = frame.FindRegister("rax").GetValueAsUnsigned()
eax = frame.FindRegister("eax").GetValueAsUnsigned()
rbx = frame.FindRegister("rbx").GetValueAsUnsigned()
ebx = frame.FindRegister("ebx").GetValueAsUnsigned()
rsi = frame.FindRegister("rsi").GetValueAsUnsigned()
pc = frame.GetPC()
rip = frame.FindRegister("rip").GetValueAsUnsigned()
if self.TraceOn():
print(
"Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x"
% (rax, rbx, rsi, pc, rip)
)
self.assertEqual(rax, 0xFFFFFFE03C778278)
self.assertEqual(rbx, 0x8877665544332211)
self.assertEqual(eax, 0x3C778278)
self.assertEqual(ebx, 0x44332211)
self.assertEqual(rsi, 0x00007FFEEB2548C0)
self.assertEqual(pc, 0x10001BC00)
self.assertEqual(rip, 0x10001BC00)
frame.FindRegister("eax").SetValueFromCString("1")
frame.FindRegister("ebx").SetValueFromCString("0")
eax = frame.FindRegister("eax").GetValueAsUnsigned()
ebx = frame.FindRegister("ebx").GetValueAsUnsigned()
rax = frame.FindRegister("rax").GetValueAsUnsigned()
rbx = frame.FindRegister("rbx").GetValueAsUnsigned()
if self.TraceOn():
print(
"Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x"
% (rax, rbx, rsi, pc, rip)
)
self.assertEqual(rax, 0xFFFFFFE000000001)
self.assertEqual(rbx, 0x8877665500000000)
self.assertEqual(eax, 0x00000001)
self.assertEqual(ebx, 0x00000000)
self.assertEqual(rsi, 0x00007FFEEB2548C0)
self.assertEqual(pc, 0x10001BC00)
self.assertEqual(rip, 0x10001BC00)
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