not working

kernel/memory/pagetable.cc

@@ -0,0 +1,47 @@
+
+#include "pagetable.h"
+
+void load_cr3( void* cr3_value ) {
+    asm volatile("mov %0, %%cr3" :: "r"((uint64_t)cr3_value) : "memory");
+}
+void create_basic_page_table(uintptr_t base){
+    //pagedirectory_entry_t *l4 = (pagedirectory_entry_t *)(base + (0 * 4096));
+    //pagedirectory_entry_t *l3 = (pagedirectory_entry_t *)(base + (1 * 4096));
+    //pagedirectory_entry_t *l2 = (pagedirectory_entry_t *)(base + (2 * 4096));
+    //pagetable_entry_t     *l1 = (pagetable_entry_t *)    (base + (7 * 4096));
+    four_lvl_paging_t* table = (four_lvl_paging_t*)base;
+
+    table->l4 = {
+        .present = 0,
+        .write = 0,
+        .user = 0,
+        .address = 0, //(uintptr_t)&(table->l3) >> 12,
+    };
+
+    table->l3 = {
+        .present = 1,
+        .write = 1,
+        .user = 1,
+        .address = (uintptr_t)&(table->l2) >> 12,
+    };
+
+    for(uint32_t i=0; i<sizeof(table->l2)/sizeof(table->l2[0]); i++){
+        table->l2[i] = {
+            .present = 1,
+            .write = 1,
+            .user = 1,
+            .address = (uintptr_t)&(table->l1[i]) >> 12,
+        };
+    }
+
+    //kernel memory
+    for(uintptr_t i=0; i<0x40000000/4096; i++){
+        table->l1[i/512].entries[i%512] = {
+            .present = 1,
+            .write = 1,
+            .user = 0,
+            .address = i,
+        };
+    }
+
+}