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 * Roughly speaking, this is a higher-level client of
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 * Roughly speaking, this is a higher-level client of
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 * Virtual Address Translation (VAT) subsystem.
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 * Virtual Address Translation (VAT) subsystem.
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 */
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 */
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#include <mm/as.h>
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#include <mm/as.h>
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#include <mm/asid.h>
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#include <mm/page.h>
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#include <mm/page.h>
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#include <mm/frame.h>
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#include <mm/frame.h>
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#include <mm/tlb.h>
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#include <mm/tlb.h>
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#include <mm/heap.h>
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#include <mm/heap.h>
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#include <arch/mm/page.h>
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#include <arch/mm/page.h>
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#include <genarch/mm/page_pt.h>
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#include <genarch/mm/page_pt.h>
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#include <mm/asid.h>
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#include <arch/mm/asid.h>
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#include <arch/mm/asid.h>
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#include <arch/mm/as.h>
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#include <arch/mm/as.h>
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#include <arch/types.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <typedefs.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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/** Create address space. */
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/** Create address space. */
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/*
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/*
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 * FIXME: this interface must be meaningful for all possible VAT
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 * FIXME: this interface must be meaningful for all possible VAT
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 *    (Virtual Address Translation) mechanisms.
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 *    (Virtual Address Translation) mechanisms.
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 */
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 */
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as_t *as_create(pte_t *ptl0)
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as_t *as_create(pte_t *ptl0, int flags)
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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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    as = (as_t *) malloc(sizeof(as_t));
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    as = (as_t *) malloc(sizeof(as_t));
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    if (as) {
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    if (as) {
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        list_initialize(&as->as_with_asid_link);
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        spinlock_initialize(&as->lock, "as_lock");
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        spinlock_initialize(&as->lock, "as_lock");
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        list_initialize(&as->as_area_head);
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        list_initialize(&as->as_area_head);
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        if (flags & AS_KERNEL)
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        as->asid = asid_get();
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            as->asid = ASID_KERNEL;
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        else
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            as->asid = ASID_INVALID;
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        as->ptl0 = ptl0;
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        as->ptl0 = ptl0;
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        if (!as->ptl0) {
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        if (!as->ptl0) {
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            pte_t *src_ptl0, *dst_ptl0;
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            pte_t *src_ptl0, *dst_ptl0;
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 */
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 */
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void as_install(as_t *as)
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void as_install(as_t *as)
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{
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{
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    ipl_t ipl;
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    ipl_t ipl;
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    asid_install(as);
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    ipl = interrupts_disable();
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    ipl = interrupts_disable();
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    spinlock_lock(&as->lock);
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    spinlock_lock(&as->lock);
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    ASSERT(as->ptl0);
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    ASSERT(as->ptl0);
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    SET_PTL0_ADDRESS(as->ptl0);
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    SET_PTL0_ADDRESS(as->ptl0);
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    spinlock_unlock(&as->lock);
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    spinlock_unlock(&as->lock);
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    interrupts_restore(ipl);
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    interrupts_restore(ipl);
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    /*
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    /*
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     * Perform architecture-specific steps.
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     * Perform architecture-specific steps.
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     * (e.g. invalidate TLB, install ASID etc.)
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     * (e.g. write ASID to hardware register etc.)
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     */
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     */
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    as_install_arch(as);
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    as_install_arch(as);
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    AS = as;
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    AS = as;
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}
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}