src/soc/cr/pipe_data.py

   1 from nmigen import Signal, Const
   2 from ieee754.fpcommon.getop import FPPipeContext
   3
   4
   5 class IntegerData:
   6
   7     def __init__(self, pspec):
   8         self.ctx = FPPipeContext(pspec)
   9         self.muxid = self.ctx.muxid
  10
  11     def __iter__(self):
  12         yield from self.ctx
  13
  14     def eq(self, i):
  15         return [self.ctx.eq(i.ctx)]
  16
  17
  18 class CRInputData(IntegerData):
  19     def __init__(self, pspec):
  20         super().__init__(pspec)
  21         self.a = Signal(64, reset_less=True) # RA
  22         self.cr = Signal(64, reset_less=True) # CR in
  23
  24     def __iter__(self):
  25         yield from super().__iter__()
  26         yield self.a
  27         yield self.cr
  28
  29     def eq(self, i):
  30         lst = super().eq(i)
  31         return lst + [self.a.eq(i.a),
  32                       self.cr.eq(i.cr)]
  33
  34 class CROutputData(IntegerData):
  35     def __init__(self, pspec):
  36         super().__init__(pspec)
  37         self.o = Signal(64, reset_less=True) # RA
  38         self.cr = Signal(64, reset_less=True) # CR in
  39
  40     def __iter__(self):
  41         yield from super().__iter__()
  42         yield self.o
  43         yield self.cr
  44
  45     def eq(self, i):
  46         lst = super().eq(i)
  47         return lst + [self.o.eq(i.o),
  48                       self.cr.eq(i.cr)]