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Rev 3022 Rev 4055
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static void ptl0_destroy(pte_t *page_table);
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static void ptl0_destroy(pte_t *page_table);
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static void pt_lock(as_t *as, bool lock);
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static void pt_lock(as_t *as, bool lock);
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static void pt_unlock(as_t *as, bool unlock);
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static void pt_unlock(as_t *as, bool unlock);
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#ifdef __OBJC__
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@implementation as_t
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+ (pte_t *) page_table_create: (int) flags
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{
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    return ptl0_create(flags);
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}
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+ (void) page_table_destroy: (pte_t *) page_table
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{
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    ptl0_destroy(page_table);
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}
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- (void) page_table_lock: (bool) _lock
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{
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    pt_lock(self, _lock);
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}
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- (void) page_table_unlock: (bool) unlock
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{
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    pt_unlock(self, unlock);
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}
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@end
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#else
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as_operations_t as_pt_operations = {
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as_operations_t as_pt_operations = {
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    .page_table_create = ptl0_create,
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    .page_table_create = ptl0_create,
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    .page_table_destroy = ptl0_destroy,
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    .page_table_destroy = ptl0_destroy,
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    .page_table_lock = pt_lock,
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    .page_table_lock = pt_lock,
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    .page_table_unlock = pt_unlock
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    .page_table_unlock = pt_unlock
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};
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};
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#endif
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/** Create PTL0.
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/** Create PTL0.
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 *
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 *
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 * PTL0 of 4-level page table will be created for each address space.
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 * PTL0 of 4-level page table will be created for each address space.
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 *
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 *
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    dst_ptl0 = (pte_t *) frame_alloc(PTL0_SIZE, FRAME_KA);
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    dst_ptl0 = (pte_t *) frame_alloc(PTL0_SIZE, FRAME_KA);
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    table_size = FRAME_SIZE << PTL0_SIZE;
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    table_size = FRAME_SIZE << PTL0_SIZE;
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    if (flags & FLAG_AS_KERNEL) {
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    if (flags & FLAG_AS_KERNEL) {
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        memsetb((uintptr_t) dst_ptl0, table_size, 0);
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        memsetb(dst_ptl0, table_size, 0);
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    } else {
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    } else {
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        uintptr_t src, dst;
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        uintptr_t src, dst;
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        /*
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        /*
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         * Copy the kernel address space portion to new PTL0.
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         * Copy the kernel address space portion to new PTL0.
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        src_ptl0 = (pte_t *) PA2KA((uintptr_t) AS_KERNEL->genarch.page_table);
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        src_ptl0 = (pte_t *) PA2KA((uintptr_t) AS_KERNEL->genarch.page_table);
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        src = (uintptr_t) &src_ptl0[PTL0_INDEX(KERNEL_ADDRESS_SPACE_START)];
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        src = (uintptr_t) &src_ptl0[PTL0_INDEX(KERNEL_ADDRESS_SPACE_START)];
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        dst = (uintptr_t) &dst_ptl0[PTL0_INDEX(KERNEL_ADDRESS_SPACE_START)];
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        dst = (uintptr_t) &dst_ptl0[PTL0_INDEX(KERNEL_ADDRESS_SPACE_START)];
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        memsetb((uintptr_t) dst_ptl0, table_size, 0);
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        memsetb(dst_ptl0, table_size, 0);
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        memcpy((void *) dst, (void *) src, table_size - (src - (uintptr_t) src_ptl0));
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        memcpy((void *) dst, (void *) src, table_size - (src - (uintptr_t) src_ptl0));
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        mutex_unlock(&AS_KERNEL->lock);
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        mutex_unlock(&AS_KERNEL->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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