| /* ITLB ** ICACHE line 1: Context 0 check and TSB load */ |
| ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer |
| ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET |
| srlx %g6, 48, %g5 ! Get context |
| brz,pn %g5, kvmap_itlb ! Context 0 processing |
| nop ! Delay slot (fill me) |
| TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry |
| cmp %g4, %g6 ! Compare TAG |
| sethi %hi(_PAGE_EXEC), %g4 ! Setup exec check |
| |
| /* ITLB ** ICACHE line 2: TSB compare and TLB load */ |
| bne,pn %xcc, tsb_miss_itlb ! Miss |
| mov FAULT_CODE_ITLB, %g3 |
| andcc %g5, %g4, %g0 ! Executable? |
| be,pn %xcc, tsb_do_fault |
| nop ! Delay slot, fill me |
| stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB |
| retry ! Trap done |
| nop |
| |
| /* ITLB ** ICACHE line 3: */ |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| |
| /* ITLB ** ICACHE line 4: */ |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
| nop |
