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void tlb_refill(struct exception_regdump *pstate)
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void tlb_refill(struct exception_regdump *pstate)
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{
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{
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    entry_lo_t lo;
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    entry_lo_t lo;
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    __address badvaddr;
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    __address badvaddr;
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    pte_t *pte;
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    pte_t *pte;
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// debug   
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    entry_hi_t hi;
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    badvaddr = cp0_badvaddr_read();
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    badvaddr = cp0_badvaddr_read();
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// debug
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    hi.value = cp0_entry_hi_read();
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    printf("TLB Refill: hi.vnp2=%X\n", hi.vpn2);
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    spinlock_lock(&VM->lock);      
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    spinlock_lock(&VM->lock);      
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    pte = find_mapping_and_check(badvaddr);
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    pte = find_mapping_and_check(badvaddr);
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    if (!pte)
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    if (!pte)
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        goto fail;
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        goto fail;