src/soc/fu/ldst/pipe_data.py

   1 from soc.fu.alu.alu_input_record import CompLDSTOpSubset
   2 from soc.fu.pipe_data import IntegerData
   3
   4
   5 class LDSTInputData(IntegerData):
   6     regspec = [('INT', 'ra', '0:63'), # RA
   7                ('INT', 'rb', '0:63'), # RB/immediate
   8                ('INT', 'rc', '0:63'), # RC
   9                ('XER', 'xer_so', '32')] # XER bit 32: SO
  10                ]
  11     def __init__(self, pspec):
  12         super().__init__(pspec, False)
  13         # convenience
  14         self.rs = self.rc
  15
  16
  17 class LDSTOutputData(IntegerData):
  18     regspec = [('INT', 'o', '0:63'),   # RT
  19                ('INT', 'o1', '0:63'),  # RA (effective address, update mode)
  20                ('CR', 'cr_a', '0:3'),
  21                ('XER', 'xer_so', '32')]
  22     def __init__(self, pspec):
  23         super().__init__(pspec, True)
  24         # convenience
  25         self.cr0, self.ea = self.cr_a, self.o1
  26
  27
  28 class LDSTPipeSpec(CommonPipeSpec):
  29     regspec = (LDSTInputData.regspec, LDSTOutputData.regspec)
  30     opsubsetkls = CompLDSTOpSubset