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Rev 4055 Rev 4537
Line 48... Line 48...
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 * We assume that the address space is already locked. Note that respective
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 * We assume that the address space is already locked. Note that respective
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 * portions of both TSBs are invalidated at a time.
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 * portions of both TSBs are invalidated at a time.
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 *
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 *
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 * @param as Address space.
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 * @param as Address space.
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 * @param page First page to invalidate in TSB.
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 * @param page First page to invalidate in TSB.
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 * @param pages Number of pages to invalidate. Value of (count_t) -1 means the
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 * @param pages Number of pages to invalidate. Value of (size_t) -1 means the
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 *  whole TSB.
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 *  whole TSB.
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 */
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 */
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void tsb_invalidate(as_t *as, uintptr_t page, count_t pages)
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void tsb_invalidate(as_t *as, uintptr_t page, size_t pages)
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{
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{
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    index_t i0, i;
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    size_t i0;
-
 
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    size_t i;
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    count_t cnt;
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    size_t cnt;
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    ASSERT(as->arch.itsb && as->arch.dtsb);
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    ASSERT(as->arch.itsb && as->arch.dtsb);
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    i0 = (page >> MMU_PAGE_WIDTH) & TSB_INDEX_MASK;
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    i0 = (page >> MMU_PAGE_WIDTH) & TSB_INDEX_MASK;
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    ASSERT(i0 < ITSB_ENTRY_COUNT && i0 < DTSB_ENTRY_COUNT);
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    ASSERT(i0 < ITSB_ENTRY_COUNT && i0 < DTSB_ENTRY_COUNT);
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    if (pages == (count_t) -1 || (pages * 2) > ITSB_ENTRY_COUNT)
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    if (pages == (size_t) -1 || (pages * 2) > ITSB_ENTRY_COUNT)
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        cnt = ITSB_ENTRY_COUNT;
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        cnt = ITSB_ENTRY_COUNT;
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    else
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    else
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        cnt = pages * 2;
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        cnt = pages * 2;
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    for (i = 0; i < cnt; i++) {
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    for (i = 0; i < cnt; i++) {
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/** Copy software PTE to ITSB.
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/** Copy software PTE to ITSB.
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 *
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 *
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 * @param t     Software PTE.
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 * @param t     Software PTE.
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 * @param index Zero if lower 8K-subpage, one if higher 8K subpage.
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 * @param index Zero if lower 8K-subpage, one if higher 8K subpage.
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 */
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 */
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void itsb_pte_copy(pte_t *t, index_t index)
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void itsb_pte_copy(pte_t *t, size_t index)
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{
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{
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    as_t *as;
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    as_t *as;
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    tsb_entry_t *tsb;
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    tsb_entry_t *tsb;
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    index_t entry;
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    size_t entry;
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    ASSERT(index <= 1);
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    ASSERT(index <= 1);
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    as = t->as;
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    as = t->as;
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    entry = ((t->page >> MMU_PAGE_WIDTH) + index) & TSB_INDEX_MASK;
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    entry = ((t->page >> MMU_PAGE_WIDTH) + index) & TSB_INDEX_MASK;
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 *
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 *
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 * @param t Software PTE.
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 * @param t Software PTE.
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 * @param index Zero if lower 8K-subpage, one if higher 8K-subpage.
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 * @param index Zero if lower 8K-subpage, one if higher 8K-subpage.
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 * @param ro    If true, the mapping is copied read-only.
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 * @param ro    If true, the mapping is copied read-only.
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 */
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 */
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void dtsb_pte_copy(pte_t *t, index_t index, bool ro)
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void dtsb_pte_copy(pte_t *t, size_t index, bool ro)
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{
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{
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    as_t *as;
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    as_t *as;
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    tsb_entry_t *tsb;
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    tsb_entry_t *tsb;
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    index_t entry;
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    size_t entry;
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    ASSERT(index <= 1);
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    ASSERT(index <= 1);
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    as = t->as;
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    as = t->as;
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    entry = ((t->page >> MMU_PAGE_WIDTH) + index) & TSB_INDEX_MASK;
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    entry = ((t->page >> MMU_PAGE_WIDTH) + index) & TSB_INDEX_MASK;