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| Rev 399 | Rev 403 | ||
|---|---|---|---|
| Line 102... | Line 102... | ||
| 102 | * Record access to PTE. |
102 | * Record access to PTE. |
| 103 | */ |
103 | */ |
| 104 | pte->a = 1; |
104 | pte->a = 1; |
| 105 | 105 | ||
| 106 | prepare_entry_hi(&hi, VM->asid, badvaddr); |
106 | prepare_entry_hi(&hi, VM->asid, badvaddr); |
| 107 | prepare_entry_lo(&lo, pte->g, pte->v, pte->d, pte->c, pte->pfn); |
107 | prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->lo.d, pte->lo.c, pte->lo.pfn); |
| 108 | 108 | ||
| 109 | /* |
109 | /* |
| 110 | * New entry is to be inserted into TLB |
110 | * New entry is to be inserted into TLB |
| 111 | */ |
111 | */ |
| 112 | cp0_entry_hi_write(hi.value); |
112 | cp0_entry_hi_write(hi.value); |
| Line 175... | Line 175... | ||
| 175 | /* |
175 | /* |
| 176 | * Record access to PTE. |
176 | * Record access to PTE. |
| 177 | */ |
177 | */ |
| 178 | pte->a = 1; |
178 | pte->a = 1; |
| 179 | 179 | ||
| 180 | prepare_entry_lo(&lo, pte->g, pte->v, pte->d, pte->c, pte->pfn); |
180 | prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->lo.d, pte->lo.c, pte->lo.pfn); |
| 181 | 181 | ||
| 182 | /* |
182 | /* |
| 183 | * The entry is to be updated in TLB. |
183 | * The entry is to be updated in TLB. |
| 184 | */ |
184 | */ |
| 185 | if ((badvaddr/PAGE_SIZE) % 2 == 0) |
185 | if ((badvaddr/PAGE_SIZE) % 2 == 0) |
| Line 248... | Line 248... | ||
| 248 | 248 | ||
| 249 | /* |
249 | /* |
| 250 | * Record access and write to PTE. |
250 | * Record access and write to PTE. |
| 251 | */ |
251 | */ |
| 252 | pte->a = 1; |
252 | pte->a = 1; |
| 253 | pte->d = 1; |
253 | pte->lo.d = 1; |
| 254 | 254 | ||
| 255 | prepare_entry_lo(&lo, pte->g, pte->v, pte->w, pte->c, pte->pfn); |
255 | prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->w, pte->lo.c, pte->lo.pfn); |
| 256 | 256 | ||
| 257 | /* |
257 | /* |
| 258 | * The entry is to be updated in TLB. |
258 | * The entry is to be updated in TLB. |
| 259 | */ |
259 | */ |
| 260 | if ((badvaddr/PAGE_SIZE) % 2 == 0) |
260 | if ((badvaddr/PAGE_SIZE) % 2 == 0) |
| Line 373... | Line 373... | ||
| 373 | } |
373 | } |
| 374 | 374 | ||
| 375 | /* |
375 | /* |
| 376 | * Handler cannot succeed if the mapping is marked as invalid. |
376 | * Handler cannot succeed if the mapping is marked as invalid. |
| 377 | */ |
377 | */ |
| 378 | if (!pte->v) { |
378 | if (!pte->lo.v) { |
| 379 | printf("Invalid mapping.\n"); |
379 | printf("Invalid mapping.\n"); |
| 380 | return NULL; |
380 | return NULL; |
| 381 | } |
381 | } |
| 382 | 382 | ||
| 383 | return pte; |
383 | return pte; |