void tlb_common_exception(void) {
tlb_exception_state_t tlb_es;
_tlb_get_exception_state(&tlb_es);
pagetable_t *current_pagetable;
current_pagetable = thread_get_current_thread_entry()->pagetable;
if (current_pagetable == NULL) {
KERNEL_PANIC("Pagetable is non-existing");
}
uint32_t i;
for (i = 0; i < current_pagetable->valid_count; i++) {
tlb_entry_t *entry = ¤t_pagetable->entries[i];
// find addr fra pagetable og put i tlb.
if (entry->VPN2 == tlb_es.badvpn2) {
KERNEL_ASSERT(entry->VPN2 == tlb_es.badvaddr >> 13);
/* Checks if address is odd( see vm.c)
* and thereafter checks validbit */
if (ADDR_IS_ON_ODD_PAGE(tlb_es.badvaddr)){
KERNEL_ASSERT(entry->V1);
} else {
KERNEL_ASSERT(entry->V0);
}
// Inserting into a random entry of the tlb.
_tlb_write_random(¤t_pagetable->entries[i]);
return;
}
}
void tlb_seek_insert(void)
{
tlb_exception_state_t state;
_tlb_get_exception_state(&state);
pagetable_t *table = thread_get_current_thread_entry()->pagetable;
for (int i = 0; i < (int)table->valid_count; i++) {
if (table->entries[i].VPN2 == state.badvpn2) {
_tlb_write_random(&table->entries[i]);
return;
}
}
KERNEL_PANIC("Access violation");
}
void tlb_load_exception(void)
{
// kprintf("STOREAH");
tlb_exception_state_t state;
pagetable_t* pagetable;
//fylder en state på vores state.
_tlb_get_exception_state(&state);
pagetable = thread_get_current_thread_entry()->pagetable;
_tlb_probe(pagetable->entries);
if(tlb_index < 0) {
KERNEL_PANIC("pagetable not found!");
}
for(uint32_t i = 0; i < pagetable->valid_count; i++) {
_tlb_write_random((tlb_entry_t*) &pagetable->entries[i]);
}
}