src/soc/fu/trap/pipe_data.py

   1 from soc.fu.pipe_data import IntegerData, CommonPipeSpec
   2 from soc.fu.trap.trap_input_record import CompTrapOpSubset
   3
   4
   5 class TrapInputData(IntegerData):
   6     regspec = [('INT', 'ra', '0:63'),  # RA
   7                ('INT', 'rb', '0:63'),  # RB/immediate
   8                ('FAST', 'fast1', '0:63'), # SRR0
   9                ('FAST', 'fast2', '0:63'), # SRR1
  10                ('FAST', 'cia', '0:63'),  # Program counter (current)
  11                ('FAST', 'msr', '0:63')]  # MSR
  12     def __init__(self, pspec):
  13         super().__init__(pspec, False)
  14         # convenience
  15         self.srr0, self.srr1 = self.fast1, self.fast2
  16         self.a, self.b = self.ra, self.rb
  17
  18
  19 class TrapOutputData(IntegerData):
  20     regspec = [('INT', 'o', '0:63'),     # RA
  21                ('FAST', 'fast1', '0:63'), # SRR0 SPR
  22                ('FAST', 'fast2', '0:63'), # SRR1 SPR
  23                ('FAST', 'nia', '0:63'),  # NIA (Next PC)
  24                ('FAST', 'msr', '0:63')]  # MSR
  25     def __init__(self, pspec):
  26         super().__init__(pspec, True)
  27         # convenience
  28         self.srr0, self.srr1 = self.fast1, self.fast2
  29
  30
  31
  32 class TrapPipeSpec(CommonPipeSpec):
  33     regspec = (TrapInputData.regspec, TrapOutputData.regspec)
  34     opsubsetkls = CompTrapOpSubset