src/soc/fu/branch/br_input_record.py

   1 from soc.fu.base_input_record import CompOpSubsetBase
   2 from nmigen.hdl.rec import Layout
   3
   4 from soc.decoder.power_enums import MicrOp, Function
   5
   6
   7 class CompBROpSubset(CompOpSubsetBase):
   8     """CompBROpSubset
   9
  10     a copy of the relevant subset information from Decode2Execute1Type
  11     needed for Branch operations.  use with eq_from_execute1 (below) to
  12     grab subsets.
  13     """
  14     def __init__(self, name=None):
  15         layout = (('cia', 64), # PC "state"
  16                   ('insn_type', MicrOp),
  17                   ('fn_unit', Function),
  18                   ('insn', 32),
  19                   ('imm_data', Layout((("imm", 64), ("imm_ok", 1)))),
  20                   ('lk', 1),
  21                   ('is_32bit', 1),
  22                   )
  23
  24         super().__init__(layout, name=name)
  25