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Line 102... Line 102...
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     * Record access to PTE.
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     * Record access to PTE.
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     */
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     */
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    pte->a = 1;
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    pte->a = 1;
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    prepare_entry_hi(&hi, VM->asid, badvaddr);
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    prepare_entry_hi(&hi, VM->asid, badvaddr);
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    prepare_entry_lo(&lo, pte->g, pte->v, pte->d, pte->c, pte->pfn);
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    prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->lo.d, pte->lo.c, pte->lo.pfn);
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    /*
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    /*
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     * New entry is to be inserted into TLB
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     * New entry is to be inserted into TLB
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     */
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     */
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    cp0_entry_hi_write(hi.value);
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    cp0_entry_hi_write(hi.value);
Line 175... Line 175...
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    /*
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    /*
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     * Record access to PTE.
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     * Record access to PTE.
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     */
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     */
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    pte->a = 1;
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    pte->a = 1;
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    prepare_entry_lo(&lo, pte->g, pte->v, pte->d, pte->c, pte->pfn);
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    prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->lo.d, pte->lo.c, pte->lo.pfn);
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    /*
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    /*
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     * The entry is to be updated in TLB.
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     * The entry is to be updated in TLB.
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     */
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     */
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    if ((badvaddr/PAGE_SIZE) % 2 == 0)
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    if ((badvaddr/PAGE_SIZE) % 2 == 0)
Line 248... Line 248...
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    /*
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    /*
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     * Record access and write to PTE.
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     * Record access and write to PTE.
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     */
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     */
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    pte->a = 1;
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    pte->a = 1;
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    pte->d = 1;
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    pte->lo.d = 1;
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    prepare_entry_lo(&lo, pte->g, pte->v, pte->w, pte->c, pte->pfn);
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    prepare_entry_lo(&lo, pte->lo.g, pte->lo.v, pte->w, pte->lo.c, pte->lo.pfn);
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    /*
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    /*
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     * The entry is to be updated in TLB.
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     * The entry is to be updated in TLB.
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     */
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     */
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    if ((badvaddr/PAGE_SIZE) % 2 == 0)
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    if ((badvaddr/PAGE_SIZE) % 2 == 0)
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    }
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    }
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    /*
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    /*
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     * Handler cannot succeed if the mapping is marked as invalid.
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     * Handler cannot succeed if the mapping is marked as invalid.
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     */
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     */
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    if (!pte->v) {
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    if (!pte->lo.v) {
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        printf("Invalid mapping.\n");
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        printf("Invalid mapping.\n");
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        return NULL;
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        return NULL;
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    }
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    }
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    return pte;
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    return pte;