src/soc/regfile/util.py

   1 from soc.regfile.regfiles import FastRegs
   2 from soc.decoder.power_enums import SPR, spr_dict
   3
   4 spr_to_fast = { SPR.CTR: FastRegs.CTR,
   5                 SPR.LR: FastRegs.LR,
   6                 SPR.TAR: FastRegs.TAR,
   7                 SPR.SRR0: FastRegs.SRR0,
   8                 SPR.SRR1: FastRegs.SRR1,
   9                 SPR.XER: FastRegs.XER,
  10                 SPR.DEC: FastRegs.DEC,
  11                 SPR.TB: FastRegs.TB,
  12                }
  13
  14 sprstr_to_fast = {}
  15 fast_to_spr = {}
  16 for (k, v) in spr_to_fast.items():
  17     sprstr_to_fast[k.name] = v
  18     fast_to_spr[v] = k
  19
  20 def fast_reg_to_spr(spr_num):
  21     return fast_to_spr[spr_num].value
  22
  23
  24 def spr_to_fast_reg(spr_num):
  25     if not isinstance(spr_num, str):
  26         spr_num = spr_dict[spr_num].SPR
  27     return sprstr_to_fast[spr_num]
  28
  29
  30 def slow_reg_to_spr(slow_reg):
  31     for i, x in enumerate(SPR):
  32         if slow_reg == i:
  33             return x.value
  34
  35
  36 def spr_to_slow_reg(spr_num):
  37     for i, x in enumerate(SPR):
  38         if spr_num == x.value:
  39             return i