133 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 checks for register number mismatch between lldb and gdb stub.9# LLDB client assigns register numbers to target xml registers in increasing10# order starting with regnum = 0, while gdb-remote may specify different regnum11# which is stored as eRegisterKindProcessPlugin. Remote side will use its12# register number in expedited register list, value_regs and invalidate_regnums.13#14# This test creates a ficticious target xml with non-sequential regnums to test15# that correct registers are accessed in all of above mentioned cases.16 17 18class TestRemoteRegNums(GDBRemoteTestBase):19 @skipIfXmlSupportMissing20 def test(self):21 class MyResponder(MockGDBServerResponder):22 def haltReason(self):23 return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"24 25 def threadStopInfo(self, threadnum):26 return "T02thread:1ff0d;threads:1ff0d;thread-pcs:000000010001bc00;00:00bc010001000000;09:c04825ebfe7f0000;"27 28 def writeRegisters(self):29 return "E02"30 31 def readRegisters(self):32 return "E01"33 34 rax_regnum2_val = "7882773ce0ffffff"35 rbx_regnum4_val = "1122334455667788"36 37 def readRegister(self, regnum):38 # lldb will try sending "p0" to see if the p packet is supported,39 # give a bogus value; in theory lldb could use this value in the40 # register context and that would be valid behavior.41 42 # notably, don't give values for registers 1 & 3 -- lldb should43 # get those from the ? stop packet ("T11") and it is a pref regression44 # if lldb is asking for these register values.45 if regnum == 0:46 return "5555555555555555"47 if regnum == 2:48 return self.rax_regnum2_val49 if regnum == 4:50 return self.rbx_regnum4_val51 52 return "E03"53 54 def writeRegister(self, regnum, value_hex):55 if regnum == 2:56 self.rax_regnum2_val = value_hex57 if regnum == 4:58 self.rbx_regnum4_val = value_hex59 60 return "OK"61 62 def qXferRead(self, obj, annex, offset, length):63 if annex == "target.xml":64 return (65 """<?xml version="1.0"?>66 <target version="1.0">67 <architecture>i386:x86-64</architecture>68 <feature name="org.gnu.gdb.i386.core">69 <reg name="rip" bitsize="64" regnum="0" type="code_ptr" group="general" altname="pc" generic="pc"/>70 <reg name="rax" bitsize="64" regnum="2" type="code_ptr" group="general"/>71 <reg name="rbx" bitsize="64" regnum="4" type="code_ptr" group="general"/>72 <reg name="eax" bitsize="32" regnum="5" value_regnums="2" invalidate_regnums="2" type="code_ptr" group="general"/>73 <reg name="ebx" bitsize="32" regnum="7" value_regnums="4" invalidate_regnums="4" type="code_ptr" group="general"/>74 <reg name="rsi" bitsize="64" regnum="9" type="code_ptr" group="general"/>75 </feature>76 </target>""",77 False,78 )79 else:80 return None, False81 82 self.server.responder = MyResponder()83 target = self.dbg.CreateTarget("")84 if self.TraceOn():85 self.runCmd("log enable gdb-remote packets")86 self.addTearDownHook(lambda: self.runCmd("log disable gdb-remote packets"))87 process = self.connect(target)88 89 thread = process.GetThreadAtIndex(0)90 frame = thread.GetFrameAtIndex(0)91 rax = frame.FindRegister("rax").GetValueAsUnsigned()92 eax = frame.FindRegister("eax").GetValueAsUnsigned()93 rbx = frame.FindRegister("rbx").GetValueAsUnsigned()94 ebx = frame.FindRegister("ebx").GetValueAsUnsigned()95 rsi = frame.FindRegister("rsi").GetValueAsUnsigned()96 pc = frame.GetPC()97 rip = frame.FindRegister("rip").GetValueAsUnsigned()98 99 if self.TraceOn():100 print(101 "Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x"102 % (rax, rbx, rsi, pc, rip)103 )104 105 self.assertEqual(rax, 0xFFFFFFE03C778278)106 self.assertEqual(rbx, 0x8877665544332211)107 self.assertEqual(eax, 0x3C778278)108 self.assertEqual(ebx, 0x44332211)109 self.assertEqual(rsi, 0x00007FFEEB2548C0)110 self.assertEqual(pc, 0x10001BC00)111 self.assertEqual(rip, 0x10001BC00)112 113 frame.FindRegister("eax").SetValueFromCString("1")114 frame.FindRegister("ebx").SetValueFromCString("0")115 eax = frame.FindRegister("eax").GetValueAsUnsigned()116 ebx = frame.FindRegister("ebx").GetValueAsUnsigned()117 rax = frame.FindRegister("rax").GetValueAsUnsigned()118 rbx = frame.FindRegister("rbx").GetValueAsUnsigned()119 120 if self.TraceOn():121 print(122 "Register values: rax == 0x%x, rbx == 0x%x, rsi == 0x%x, pc == 0x%x, rip == 0x%x"123 % (rax, rbx, rsi, pc, rip)124 )125 126 self.assertEqual(rax, 0xFFFFFFE000000001)127 self.assertEqual(rbx, 0x8877665500000000)128 self.assertEqual(eax, 0x00000001)129 self.assertEqual(ebx, 0x00000000)130 self.assertEqual(rsi, 0x00007FFEEB2548C0)131 self.assertEqual(pc, 0x10001BC00)132 self.assertEqual(rip, 0x10001BC00)133