src/soc/fu/trap/pipe_data.py

   1 from soc.fu.pipe_data import IntegerData
   2 from soc.fu.alu.alu_input_record import CompALUOpSubset # TODO: replace
   3
   4
   5 class TrapInputData(IntegerData):
   6     regspec = [('INT', 'ra', '0:63'),  # RA
   7                ('INT', 'rb', '0:63'),  # RB/immediate
   8                ('FAST', 'spr1', '0:63'), # SRR0
   9                ('FAST', 'cia', '0:63'),  # Program counter (current)
  10                ('FAST', 'msr', '0:63')]  # MSR
  11     def __init__(self, pspec):
  12         super().__init__(pspec, False)
  13         # convenience
  14         self.srr0, self.a, self.b = self.spr1, self.ra, self.rb
  15
  16
  17 class TrapOutputData(IntegerData):
  18     regspec = [('INT', 'o', '0:63'),     # RA
  19                ('FAST', 'spr1', '0:63'), # SRR0 SPR
  20                ('FAST', 'spr2', '0:63'), # SRR1 SPR
  21                ('FAST', 'nia', '0:63'),  # NIA (Next PC)
  22                ('FAST', 'msr', '0:63')]  # MSR
  23     def __init__(self, pspec):
  24         super().__init__(pspec, True)
  25         # convenience
  26         self.srr0, self.srr1 = self.spr1, self.spr2
  27
  28
  29
  30 # TODO: replace CompALUOpSubset with CompTrapOpSubset
  31 class TrapPipeSpec:
  32     regspec = (TrapInputData.regspec, TrapOutputData.regspec)
  33     opsubsetkls = CompALUOpSubset