--- a/src/impl/vm_impl_private.cbc	Thu Jan 23 17:32:48 2020 +0900
+++ b/src/impl/vm_impl_private.cbc	Thu Jan 23 17:52:35 2020 +0900
@@ -8,8 +8,9 @@
 */
 
 __code loaduvm_ptesize_checkvm_impl(struct vm_impl* vm_impl, __code next(...)) {
+    char* addr = vm_impl->addr;
 
-    if ((uint) vm_impl->addr %PTE_SZ != 0) {
+    if ((uint) addr %PTE_SZ != 0) {
        // goto panic 
     }
 
@@ -17,12 +18,17 @@
 }
 
 __code loaduvm_loopvm_impl(struct vm_impl* vm_impl, __code next(...)) {
+    uint i = vm_impl->i;
+    uint sz = vm_impl->sz;
 
-    if (vm_impl->i < vm_impl->sz) {
+    if (i < sz) {
         goto loaduvm_check_pgdir(vm_impl, next(...));  
     } 
+
     goto loaduvm_exit(vm_impl, next(...));
 }
+
+
 static pte_t* walkpgdir (pde_t *pgdir, const void *va, int alloc)
 {
     pde_t *pde;
@@ -53,26 +59,46 @@
 
 
 __code loaduvm_check_pgdir(struct vm_impl* vm_impl, __code next(...)) {
-    if ((vm_impl->pte = walkpgdir(vm_impl->pgdir, vm_impl->addr + vm_impl->i, 0)) == 0) {
+    pte_t* pte = vm_impl->pte;
+    pde_t* pgdir = vm_impl->pgdir;
+    uint i = vm_impl->i;
+    char* addr = vm_impl->addr;
+    uint pa = vm_impl->pa;
+
+    if ((pte = walkpgdir(pgdir, addr + i, 0)) == 0) {
         // goto panic
     } 
-    vm_impl->pa = PTE_ADDR(*vm_impl->pte);
- 
+    pa = PTE_ADDR(*pte);
+
+    vm_impl->pte = pte; 
+    vm_impl->pgdir = pgdir; 
+    vm_impl->addr = addr; 
+    vm_impl->pa = pa; 
+
     goto loaduvm_check_PTE_SZ(vm_impl, next(...));
 }
 
 __code loaduvm_check_PTE_SZ(struct vm_impl* vm_impl, __code next(...)) {
-    if (vm_impl->sz - vm_impl->i < PTE_SZ) {
-        vm_impl->n = vm_impl->sz - vm_impl->i;
+    uint sz = vm_impl->sz;
+    uint i = vm_impl->i;
+    uint n = vm_impl->n;
+    struct inode* ip = vm_impl->ip;
+    uint pa = vm_impl->pa;
+    uint offset = vm_impl->offset;
+    
+    if (sz - i < PTE_SZ) {
+        n = sz - i;
     } else {
-        vm_impl->n = PTE_SZ;
+        n = PTE_SZ;
     }
 
-    if (readi(vm_impl->ip, p2v(vm_impl->pa), vm_impl->offset + vm_impl->i, vm_impl->n) != vm_impl->n) {
+    if (readi(ip, p2v(pa), offset + i, n) != n) {
         // panic 
         // return -1;
     }
 
+    vm_impl->n = n;
+ 
     goto loaduvm_exit(vm_impl, next(...));
 }