33c0f93f6c
This infrastructure has proven proven its worth, so give it a more prominent place. My immediate motivation for this is the desire to reuse this infrastructure for qemu platform testing, but I believe this move makes sense independently of that. Moving this code to the packages tree will allow as to add more structure to the gdb client tests -- currently they are all crammed into the same test folder as that was the only way they could access this code. I'm splitting the code into two parts while moving it. The first once contains just the generic gdb protocol wrappers, while the other one contains the unit test glue. The reason for that is that for qemu testing, I need to run the gdb code in a separate process, so I will only be using the first part there. Differential Revision: https://reviews.llvm.org/D113893
130 lines
5.8 KiB
Python
130 lines
5.8 KiB
Python
from __future__ import print_function
|
|
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):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
@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)
|