def getStackValue(self, func, call, param):
inst = self.currentProgram.getListing().getInstructionAt(call)
if inst is None:
return None
init = call
curr = inst.getPrevious()
while curr is not None:
if self.monitor.isCancelled():
return doCancel()
if curr.getFlowType().toString() != 'FALL_THROUGH':
break
init = curr.getAddress()
curr = curr.getPrevious()
emulatorHelper = EmulatorHelper(self.currentProgram)
emulatorHelper.setBreakpoint(call)
emulatorHelper.writeRegister(emulatorHelper.getPCRegister(), int(init.toString(), 16))
stackOffset = (call.getAddressSpace().getMaxAddress().getOffset() >> 1) - 0x7fff;
emulatorHelper.writeRegister(emulatorHelper.getStackPointerRegister(), stackOffset)
value = None
last = self.currentProgram.getListing().getCodeUnitAt(init).getPrevious().getAddress()
while not self.monitor.isCancelled():
emulatorHelper.step(self.monitor)
if self.monitor.isCancelled():
return doCancel()
address = emulatorHelper.getExecutionAddress()
current = self.currentProgram.getListing().getCodeUnitAt(address)
if address.equals(last):
# skip bad instructions
goto = current.getMaxAddress().next()
emulatorHelper.writeRegister(emulatorHelper.getPCRegister(), int(goto.toString(), 16))
continue
else:
last = address
if address.equals(call):
start = param.getStackOffset() - param.getLength()
value = emulatorHelper.readStackValue(start, param.getLength(), True)
break
emulatorHelper.clearBreakpoint(call)
emulatorHelper.dispose()
return value
def getStackValue(start, call, param):
inst = getInstructionAt(start)
if inst is None:
return None
emulatorHelper = EmulatorHelper(currentProgram)
emulatorHelper.setBreakpoint(call)
emulatorHelper.writeRegister(emulatorHelper.getPCRegister(),
int(start.toString(), 16))
stackOffset = (
call.getAddressSpace().getMaxAddress().getOffset() >> 1) - 0x7fff
emulatorHelper.writeRegister(emulatorHelper.getStackPointerRegister(),
stackOffset)
listing = currentProgram.getListing()
value = None
last = listing.getCodeUnitAt(start).getPrevious().getAddress()
while not monitor.isCancelled():
emulatorHelper.step(monitor)
if monitor.isCancelled():
return doCancel()
address = emulatorHelper.getExecutionAddress()
current = currentProgram.getListing().getCodeUnitAt(address)
if address.equals(last):
goto = current.getMaxAddress().next()
emulatorHelper.writeRegister(emulatorHelper.getPCRegister(),
int(goto.toString(), 16))
continue
else:
last = address
if address.equals(call):
width = currentProgram.getLanguage().getLanguageDescription(
).getSize() >> 3
start = param.getStackOffset() - width
value = emulatorHelper.readStackValue(start, width, True)
break
emulatorHelper.clearBreakpoint(call)
emulatorHelper.dispose()
return value