102 lines · python
1import lldb2from lldbsuite.test.lldbtest import *3from lldbsuite.test.decorators import *4from lldbsuite.test.gdbclientutils import *5from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase6 7 8# This test case is testing three things:9#10# 1. three register values will be provided in the ? stop packet (T11) -11# registers 0 ("rax"), 1 ("rbx"), and 3 ("rip")12# 2. ReadRegister packet will provide the value of register 2 ("rsi")13# 3. The "g" read-all-registers packet is not supported; p must be used14# to get the value of register 2 ("rsi")15#16# Forcing lldb to use the expedited registers in the stop packet and17# marking it an error to request that register value is to prevent18# performance regressions.19#20# Some gdb RSP stubs only implement p/P, they do not support g/G.21# lldb must be able to work with either.22 23 24class TestNoGPacketSupported(GDBRemoteTestBase):25 @skipIfXmlSupportMissing26 def test(self):27 class MyResponder(MockGDBServerResponder):28 def haltReason(self):29 return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:7882773ce0ffffff;01:1122334455667788;03:00bc010001000000;"30 31 def threadStopInfo(self, threadnum):32 return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:7882773ce0ffffff;01:1122334455667788;03:00bc010001000000;"33 34 def writeRegisters(self):35 return "E02"36 37 def readRegisters(self):38 return "E01"39 40 def readRegister(self, regnum):41 # lldb will try sending "p0" to see if the p packet is supported,42 # give a bogus value; in theory lldb could use this value in the43 # register context and that would be valid behavior.44 45 # notably, don't give values for registers 1 & 3 -- lldb should46 # get those from the ? stop packet ("T11") and it is a pref regression47 # if lldb is asking for these register values.48 if regnum == 0:49 return "5555555555555555"50 if regnum == 2:51 return "c04825ebfe7f0000" # 0x00007ffeeb2548c052 53 return "E03"54 55 def writeRegister(self, regnum):56 return "OK"57 58 def qXferRead(self, obj, annex, offset, length):59 if annex == "target.xml":60 return (61 """<?xml version="1.0"?>62 <target version="1.0">63 <architecture>i386:x86-64</architecture>64 <feature name="org.gnu.gdb.i386.core">65 <reg name="rax" bitsize="64" regnum="0" type="code_ptr" group="general"/>66 <reg name="rbx" bitsize="64" regnum="1" type="code_ptr" group="general"/>67 <reg name="rsi" bitsize="64" regnum="2" type="code_ptr" group="general"/>68 <reg name="rip" bitsize="64" regnum="3" type="code_ptr" group="general" altname="pc" generic="pc"/>69 </feature>70 </target>""",71 False,72 )73 else:74 return None, False75 76 self.server.responder = MyResponder()77 target = self.dbg.CreateTarget("")78 if self.TraceOn():79 self.runCmd("log enable gdb-remote packets")80 self.addTearDownHook(lambda: self.runCmd("log disable gdb-remote packets"))81 process = self.connect(target)82 83 thread = process.GetThreadAtIndex(0)84 frame = thread.GetFrameAtIndex(0)85 rax = frame.FindRegister("rax").GetValueAsUnsigned()86 rbx = frame.FindRegister("rbx").GetValueAsUnsigned()87 rsi = frame.FindRegister("rsi").GetValueAsUnsigned()88 pc = frame.GetPC()89 rip = frame.FindRegister("rip").GetValueAsUnsigned()90 91 if self.TraceOn():92 print(93 "Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x"94 % (rax, rbx, rsi, pc, rip)95 )96 97 self.assertEqual(rax, 0xFFFFFFE03C778278)98 self.assertEqual(rbx, 0x8877665544332211)99 self.assertEqual(rsi, 0x00007FFEEB2548C0)100 self.assertEqual(pc, 0x10001BC00)101 self.assertEqual(rip, 0x10001BC00)102