diff options
Diffstat (limited to 'arch/sparc64/kernel/itlb_miss.S')
-rw-r--r-- | arch/sparc64/kernel/itlb_miss.S | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/sparc64/kernel/itlb_miss.S b/arch/sparc64/kernel/itlb_miss.S index 730caa4a1506..6dfe3968c379 100644 --- a/arch/sparc64/kernel/itlb_miss.S +++ b/arch/sparc64/kernel/itlb_miss.S | |||
@@ -2,25 +2,25 @@ | |||
2 | ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer | 2 | ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer |
3 | ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET | 3 | ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET |
4 | srlx %g6, 48, %g5 ! Get context | 4 | srlx %g6, 48, %g5 ! Get context |
5 | sllx %g6, 22, %g6 ! Zero out context | ||
5 | brz,pn %g5, kvmap_itlb ! Context 0 processing | 6 | brz,pn %g5, kvmap_itlb ! Context 0 processing |
6 | nop ! Delay slot (fill me) | 7 | srlx %g6, 22, %g6 ! Delay slot |
7 | TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry | 8 | TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry |
8 | cmp %g4, %g6 ! Compare TAG | 9 | cmp %g4, %g6 ! Compare TAG |
9 | sethi %hi(PAGE_EXEC), %g4 ! Setup exec check | ||
10 | 10 | ||
11 | /* ITLB ** ICACHE line 2: TSB compare and TLB load */ | 11 | /* ITLB ** ICACHE line 2: TSB compare and TLB load */ |
12 | sethi %hi(PAGE_EXEC), %g4 ! Setup exec check | ||
12 | ldx [%g4 + %lo(PAGE_EXEC)], %g4 | 13 | ldx [%g4 + %lo(PAGE_EXEC)], %g4 |
13 | bne,pn %xcc, tsb_miss_itlb ! Miss | 14 | bne,pn %xcc, tsb_miss_itlb ! Miss |
14 | mov FAULT_CODE_ITLB, %g3 | 15 | mov FAULT_CODE_ITLB, %g3 |
15 | andcc %g5, %g4, %g0 ! Executable? | 16 | andcc %g5, %g4, %g0 ! Executable? |
16 | be,pn %xcc, tsb_do_fault | 17 | be,pn %xcc, tsb_do_fault |
17 | nop ! Delay slot, fill me | 18 | nop ! Delay slot, fill me |
18 | stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB | 19 | nop |
19 | retry ! Trap done | ||
20 | 20 | ||
21 | /* ITLB ** ICACHE line 3: */ | 21 | /* ITLB ** ICACHE line 3: */ |
22 | nop | 22 | stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB |
23 | nop | 23 | retry ! Trap done |
24 | nop | 24 | nop |
25 | nop | 25 | nop |
26 | nop | 26 | nop |