-from nmigen import Signal, Const, Cat
-from ieee754.fpcommon.getop import FPPipeContext
-from soc.fu.pipe_data import IntegerData
-from soc.decoder.power_decoder2 import Data
+from soc.fu.pipe_data import FUBaseData
from soc.fu.alu.pipe_data import ALUOutputData, CommonPipeSpec
from soc.fu.logical.logical_input_record import CompLogicalOpSubset
-class LogicalInputData(IntegerData):
- regspec = [('INT', 'ra', '0:63'), # RA
- ('INT', 'rb', '0:63'), # RB/immediate
- ]
+# input (and output) for logical initial stage (common input)
+class LogicalInputData(FUBaseData):
def __init__(self, pspec):
super().__init__(pspec, False)
# convenience
self.a, self.b = self.ra, self.rb
+ @property
+ def regspec(self):
+ return [('INT', 'ra', self.intrange), # RA
+ ('INT', 'rb', self.intrange), # RB/immediate
+ ('XER', 'xer_so', '32'), # bit0: so
+ ]
-class LogicalOutputData(IntegerData):
- regspec = [('INT', 'o', '0:63'), # RT
+# input to logical final stage (common output)
+class LogicalOutputData(FUBaseData):
+ def __init__(self, pspec):
+ super().__init__(pspec, True)
+ # convenience
+ self.cr0 = self.cr_a
+
+ @property
+ def regspec(self):
+ return [('INT', 'o', self.intrange),
('CR', 'cr_a', '0:3'),
- ('XER', 'xer_ca', '34,45'), # bit0: ca, bit1: ca32
+ ('XER', 'xer_so', '32'), # bit0: so
]
+
+
+# output from logical final stage (common output) - note that XER.so
+# is *not* included (the only reason it's in the input is because of CR0)
+class LogicalOutputDataFinal(FUBaseData):
def __init__(self, pspec):
super().__init__(pspec, True)
# convenience
self.cr0 = self.cr_a
+ @property
+ def regspec(self):
+ return [('INT', 'o', self.intrange),
+ ('CR', 'cr_a', '0:3'),
+ ]
class LogicalPipeSpec(CommonPipeSpec):
- regspec = (LogicalInputData.regspec, LogicalOutputData.regspec)
+ regspecklses = (LogicalInputData, LogicalOutputDataFinal)
opsubsetkls = CompLogicalOpSubset