Debug memory

1 files changed, 16 insertions, 22 deletions

diff --git a/src/core/paging.cc b/src/core/paging.cc
index c283c57..7ae1b25 100644
--- a/src/core/paging.cc
+++ b/src/core/paging.cc
@@ -11,11 +11,14 @@ u64* paging_allocate_table(){
     u64 addr=(u64)kpages[kpages_next];
     u64* allocated=(u64*)(addr-kvar_kernel_vma);
     kpages_next++;
+    if(kpages_next>=PAGING_MAX_PAGE){
+        printk("Could not allocate more page structures. Kernel Panic!");
+        while(1);
+    }
     return allocated;
 }
 
 void paging_enable() {
-
     // Init status
     for (int i = 0; i < PAGING_MAX_PAGE / 8; i++) {
         paging_status[i] = 0;
@@ -33,10 +36,11 @@ void paging_enable() {
 
     // Setting up new kernel address space
     for(u64 i=0;i<=0x10000000;i+=4096){
-        paging_allocate_addr(kpages[0],kvar_kernel_vma+i,i, 0x3,0); // Identity map
+        PAGE_MAP(i);
     }
+
     // 4096 bytes stack
-    paging_allocate_addr(kpages[0],kvar_kernel_vma-4096,kvar_stack_pma,0x3,0);
+    PAGE_MAP_PHY(-4096, kvar_stack_pma);
     
     // Load new pml4
     u64 kpage_phy=((u64)kpages[0]-kvar_kernel_vma);
@@ -46,18 +50,6 @@ void paging_enable() {
         :: "r" (kpage_phy));
 }
 
-u64 paging_as_phy(u64* pml4_table, u64 virt){
-    u16 pml4=virt>>39&0x1FF;
-    u16 pdp=virt>>30&0x1FF;
-    u16 pd=virt>>21&0x1FF;
-    u16 pt=(virt>>12)&0x1FF;
-    
-    u64* pdp_table=(u64*)PAGE(pml4_table[pml4]);
-    u64* pd_table=(u64*)PAGE(pdp_table[pdp]);
-    u64* pt_table=(u64*)PAGE(pd_table[pd]);
-    return((PAGE(pt_table[pt]))|(virt&0xFFF));
-}
-
 u64* paging_allocate_contiguous(int npages){
     int n_contiguous=0;
     for (int i = 0; i < PAGING_MAX_PAGE / 8; i++) {
@@ -94,6 +86,8 @@ void paging_deallocate(u64 addr){
     paging_status[page_number/8]=byte&(~(1<<(page_number%8)));
 }
 
+
+/// TODO: Debug addess
 void paging_deallocate_pml4(u64* pml4){
     for(int i=0;i<512;i++){
         u64* pdp=(u64*)PAGE(pml4[i]);
@@ -142,7 +136,7 @@ void paging_deallocate_table(u64* table){
     }
 }
 
-void paging_allocate_addr(u64* pml4_table, u64 virt, u64 phy, u16 options, u64 offset){
+void paging_allocate_addr(u64* pml4_table, u64 virt, u64 phy, u16 options){
     u16 pml4=virt>>39&0x1FF;
     u16 pdp=virt>>30&0x1FF;
     u16 pd=virt>>21&0x1FF;
@@ -153,29 +147,29 @@ void paging_allocate_addr(u64* pml4_table, u64 virt, u64 phy, u16 options, u64 o
     if(pml4_table[pml4] == 0){
         pml4_table[pml4]=(u64)paging_allocate_table();
         pml4_table[pml4]|=options;
-        paging_allocate_addr(pml4_table,virt,phy,options,offset);
+        paging_allocate_addr(pml4_table,virt,phy,options);
         return;
     }
 
     // Solve pd
-    u64* pdp_table=(u64*)(PAGE(pml4_table[pml4])+offset);
+    u64* pdp_table=(u64*)(VIRT(PAGE(pml4_table[pml4])));
     if(pdp_table[pdp] == 0){
         pdp_table[pdp]=(u64)paging_allocate_table();
         pdp_table[pdp]|=options;
-        paging_allocate_addr(pml4_table,virt,phy,options,offset);
+        paging_allocate_addr(pml4_table,virt,phy,options);
         return;
     }
     
     // Solve pt
-    u64* pd_table=(u64*)(PAGE(pdp_table[pdp])+offset);
+    u64* pd_table=(u64*)(VIRT(PAGE(pdp_table[pdp])));
     if(pd_table[pd] == 0){
         pd_table[pd]=(u64)paging_allocate_table();
         pd_table[pd]|=options;
-        paging_allocate_addr(pml4_table,virt,phy,options,offset);
+        paging_allocate_addr(pml4_table,virt,phy,options);
         return;
     }
     // Solve address
-    u64* pt_table=(u64*)(PAGE(pd_table[pd])+offset);
+    u64* pt_table=(u64*)(VIRT(PAGE(pd_table[pd])));
     if(pt_table[pt] == 0){
         pt_table[pt]=PAGE(phy);
         pt_table[pt]|=options;