def decrement_bits_predictor(self, address, ret):
retval = 0
data = None
ret_data = {}
bits = -1
retval = self.extract_bits(address, 2, ret_data)
if (retval):
return retval
data = ret_data["value"]
bits = data["bits"]
ret["value"] = bits
if (bits > 0):
data["bits"] = bits - 1
else:
retval = FLAGS.GET_COUNTER_SATURED()
return retval
def increment_bits_predictor(self, address, ret):
retval = 0
data = None
ret_data = {}
bits = -1
retval = self.extract_bits(address, 1, ret_data)
if (retval):
return retval
data = ret_data["value"]
bits = data["bits"]
ret["value"] = bits
if (bits < (2**(self.num_pred_bits)) - 1):
data["bits"] = bits + 1
else:
retval = FLAGS.GET_COUNTER_SATURED()
return retval