1/* ITLB ** ICACHE line 1: Context 0 check and TSB load */ 2 ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer 3 ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET 4 srlx %g6, 48, %g5 ! Get context 5 sllx %g6, 22, %g6 ! Zero out context 6 brz,pn %g5, kvmap_itlb ! 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 11/* ITLB ** ICACHE line 2: TSB compare and TLB load */ 12 bne,pn %xcc, tsb_miss_itlb ! Miss 13 mov FAULT_CODE_ITLB, %g3 14 sethi %hi(_PAGE_EXEC_4U), %g4 15 andcc %g5, %g4, %g0 ! Executable? 16 be,pn %xcc, tsb_do_fault 17 nop ! Delay slot, fill me 18 stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB 19 retry ! Trap done 20 21/* ITLB ** ICACHE line 3: */ 22 nop 23 nop 24 nop 25 nop 26 nop 27 nop 28 nop 29 nop 30 31/* ITLB ** ICACHE line 4: */ 32 nop 33 nop 34 nop 35 nop 36 nop 37 nop 38 nop 39 nop 40