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#include <memstr.h>
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#include <memstr.h>
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#include <debug.h>
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#include <debug.h>
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#include <arch.h>
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#include <arch.h>
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/** Virtual operations for page subsystem. */
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/** Virtual operations for page subsystem. */
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page_operations_t *page_operations = NULL;
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page_mapping_operations_t *page_mapping_operations = NULL;
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void page_init(void)
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void page_init(void)
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{
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{
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    page_arch_init();
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    page_arch_init();
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}
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}
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 * @param frame Physical address of memory frame to which the mapping is done.
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 * @param frame Physical address of memory frame to which the mapping is done.
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 * @param flags Flags to be used for mapping.
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 * @param flags Flags to be used for mapping.
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 */
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 */
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void page_mapping_insert(as_t *as, __address page, __address frame, int flags)
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void page_mapping_insert(as_t *as, __address page, __address frame, int flags)
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{
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{
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    ASSERT(page_operations);
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    ASSERT(page_mapping_operations);
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    ASSERT(page_operations->mapping_insert);
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    ASSERT(page_mapping_operations->mapping_insert);
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    page_operations->mapping_insert(as, page, frame, flags);
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    page_mapping_operations->mapping_insert(as, page, frame, flags);
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}
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}
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/** Find mapping for virtual page
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/** Find mapping for virtual page
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 *
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 *
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 * Find mapping for virtual page.
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 * Find mapping for virtual page.
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 *
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 *
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 * @return NULL if there is no such mapping; requested mapping otherwise.
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 * @return NULL if there is no such mapping; requested mapping otherwise.
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 */
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 */
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pte_t *page_mapping_find(as_t *as, __address page)
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pte_t *page_mapping_find(as_t *as, __address page)
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{
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{
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    ASSERT(page_operations);
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    ASSERT(page_mapping_operations);
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    ASSERT(page_operations->mapping_find);
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    ASSERT(page_mapping_operations->mapping_find);
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    return page_operations->mapping_find(as, page);
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    return page_mapping_operations->mapping_find(as, page);
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}
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}