dtlb_miss.S 747 B

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  1. /* DTLB ** ICACHE line 1: Context 0 check and TSB load */
  2. ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
  3. ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET
  4. srlx %g6, 48, %g5 ! Get context
  5. sllx %g6, 22, %g6 ! Zero out context
  6. brz,pn %g5, kvmap_dtlb ! Context 0 processing
  7. srlx %g6, 22, %g6 ! Delay slot
  8. TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
  9. cmp %g4, %g6 ! Compare TAG
  10. /* DTLB ** ICACHE line 2: TSB compare and TLB load */
  11. bne,pn %xcc, tsb_miss_dtlb ! Miss
  12. mov FAULT_CODE_DTLB, %g3
  13. stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB
  14. retry ! Trap done
  15. nop
  16. nop
  17. nop
  18. nop
  19. /* DTLB ** ICACHE line 3: */
  20. nop
  21. nop
  22. nop
  23. nop
  24. nop
  25. nop
  26. nop
  27. nop
  28. /* DTLB ** ICACHE line 4: */
  29. nop
  30. nop
  31. nop
  32. nop
  33. nop
  34. nop
  35. nop
  36. nop