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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 is testing three things:
#
# 1. three register values will be provided in the ? stop packet (T11) -
# registers 0 ("rax"), 1 ("rbx"), and 3 ("rip")
# 2. ReadRegister packet will provide the value of register 2 ("rsi")
# 3. The "g" read-all-registers packet is not supported; p must be used
# to get the value of register 2 ("rsi")
#
# Forcing lldb to use the expedited registers in the stop packet and
# marking it an error to request that register value is to prevent
# performance regressions.
#
# Some gdb RSP stubs only implement p/P, they do not support g/G.
# lldb must be able to work with either.
class TestNoGPacketSupported(GDBRemoteTestBase):
@skipIfXmlSupportMissing
def test(self):
class MyResponder(MockGDBServerResponder):
def haltReason(self):
return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:7882773ce0ffffff;01:1122334455667788;03:00bc010001000000;"
def threadStopInfo(self, threadnum):
return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:7882773ce0ffffff;01:1122334455667788;03:00bc010001000000;"
def writeRegisters(self):
return "E02"
def readRegisters(self):
return "E01"
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 "c04825ebfe7f0000" # 0x00007ffeeb2548c0
return "E03"
def writeRegister(self, regnum):
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="rax" bitsize="64" regnum="0" type="code_ptr" group="general"/>
<reg name="rbx" bitsize="64" regnum="1" type="code_ptr" group="general"/>
<reg name="rsi" bitsize="64" regnum="2" type="code_ptr" group="general"/>
<reg name="rip" bitsize="64" regnum="3" type="code_ptr" group="general" altname="pc" generic="pc"/>
</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()
rbx = frame.FindRegister("rbx").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(rsi, 0x00007FFEEB2548C0)
self.assertEqual(pc, 0x10001BC00)
self.assertEqual(rip, 0x10001BC00)
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