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    unsigned g : 1;     /* global bit */
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    unsigned g : 1;     /* global bit */
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    unsigned v : 1;     /* valid bit */
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    unsigned v : 1;     /* valid bit */
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    unsigned d : 1;     /* dirty/write-protect bit */
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    unsigned d : 1;     /* dirty/write-protect bit */
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    unsigned c : 3;     /* cache coherency attribute */
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    unsigned c : 3;     /* cache coherency attribute */
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    unsigned pfn : 24;  /* frame number */
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    unsigned pfn : 24;  /* frame number */
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    unsigned : 2;
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    unsigned zero: 2;   /* zero */
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} __attribute__ ((packed));
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struct pte {
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    unsigned g : 1;     /* global bit */
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    unsigned v : 1;     /* valid bit */
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    unsigned d : 1;     /* dirty/write-protect bit */
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    unsigned c : 3;     /* cache coherency attribute */
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    unsigned pfn : 24;  /* frame number */
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    unsigned w : 1;     /* writable */
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    unsigned a : 1;     /* accessed */
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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struct entry_hi {
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struct entry_hi {
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    unsigned asid : 8;
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    unsigned asid : 8;
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    unsigned : 5;
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    unsigned : 5;
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    unsigned : 13;
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    unsigned : 13;
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    unsigned mask : 12;
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    unsigned mask : 12;
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    unsigned : 7;
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    unsigned : 7;
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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struct tlb_entry {
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struct index {
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    struct entry_lo lo0;
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    unsigned index : 4;
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    struct entry_lo lo1;
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    unsigned : 27;
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    struct entry_hi hi;
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    unsigned p : 1;
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    struct page_mask mask;
 - 
 
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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/** Probe TLB for Matching Entry
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 *
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 * Probe TLB for Matching Entry.
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 */
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static inline void tlbp(void)
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{
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    __asm__ volatile ("tlbp\n\t");
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}
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/** Read Indexed TLB Entry
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/** Read Indexed TLB Entry
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 *
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 *
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 * Read Indexed TLB Entry.
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 * Read Indexed TLB Entry.
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 */
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 */