src/soc/fu/base_input_record.py

   1 from nmigen.hdl.rec import Record, Layout
   2 from nmigen import Signal
   3
   4
   5 class CompOpSubsetBase(Record):
   6     """CompOpSubsetBase
   7
   8     base class of subset Operation information
   9     """
  10     def __init__(self, layout, name):
  11         if name is None:
  12             name = self.__class__.__name__
  13             print ("Subset name", name)
  14             assert name.startswith("Comp")
  15             assert name.endswith("OpSubset")
  16             name = name[4:-8].lower() + "_op"
  17
  18         Record.__init__(self, Layout(layout), name=name)
  19
  20         # grrr.  Record does not have kwargs
  21         for fname, sig in self.fields.items():
  22             sig.reset_less = True
  23
  24     def eq_from_execute1(self, other):
  25         """ use this to copy in from Decode2Execute1Type
  26         """
  27         res = []
  28         for fname, sig in self.fields.items():
  29             eqfrom = other.do.fields[fname]
  30             res.append(sig.eq(eqfrom))
  31         return res
  32
  33     def ports(self):
  34         res = []
  35         for fname, sig in self.fields.items():
  36             if isinstance(sig, Signal):
  37                 res.append(sig)
  38         return res