1import lldb 2from lldbsuite.test.lldbtest import * 3from lldbsuite.test.decorators import * 4from lldbsuite.test.gdbclientutils import * 5from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase 6 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 used 14# to get the value of register 2 ("rsi") 15# 16# Forcing lldb to use the expedited registers in the stop packet and 17# marking it an error to request that register value is to prevent 18# 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 @skipIfXmlSupportMissing 26 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 the 43 # register context and that would be valid behavior. 44 45 # notably, don't give values for registers 1 & 3 -- lldb should 46 # get those from the ? stop packet ("T11") and it is a pref regression 47 # if lldb is asking for these register values. 48 if regnum == 0: 49 return "5555555555555555" 50 if regnum == 2: 51 return "c04825ebfe7f0000" # 0x00007ffeeb2548c0 52 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, False 75 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