src/soc/fu/trap/pipe_data.py

   1 from soc.fu.pipe_data import FUBaseData, CommonPipeSpec
   2 from soc.fu.trap.trap_input_record import CompTrapOpSubset
   3
   4
   5 class TrapInputData(FUBaseData):
   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                 # note here that neither MSR nor CIA are read as regs: they are
  11                 # passed in as incoming "State", via the CompTrapOpSubset
  12                ]
  13     def __init__(self, pspec):
  14         super().__init__(pspec, False)
  15         # convenience
  16         self.srr0, self.srr1 = self.fast1, self.fast2
  17         self.a, self.b = self.ra, self.rb
  18
  19
  20 class TrapOutputData(FUBaseData):
  21     regspec = [('INT', 'o', '0:63'),     # RA
  22                ('FAST', 'fast1', '0:63'), # SRR0 SPR
  23                ('FAST', 'fast2', '0:63'), # SRR1 SPR
  24                ('STATE', 'nia', '0:63'),  # NIA (Next PC)
  25                ('STATE', 'msr', '0:63')]  # MSR
  26     def __init__(self, pspec):
  27         super().__init__(pspec, True)
  28         # convenience
  29         self.srr0, self.srr1 = self.fast1, self.fast2
  30
  31
  32
  33 class TrapPipeSpec(CommonPipeSpec):
  34     regspec = (TrapInputData.regspec, TrapOutputData.regspec)
  35     opsubsetkls = CompTrapOpSubset