Debug memory

1 files changed, 9 insertions, 6 deletions

diff --git a/src/boot/multiboot2.cc b/src/boot/multiboot2.cc
index bac1adb..da247ad 100644
--- a/src/boot/multiboot2.cc
+++ b/src/boot/multiboot2.cc
@@ -4,13 +4,12 @@
 #include "libs/stdio.hpp"
 
 u32* mb2_find_tag(u32 *mb2_info_addr, char type){
-    PAGING_MAP(mb2_info_addr);
-    u32 size=(u32)mb2_info_addr[0]; // Todo: check for size
-    for(u64 i=0;i<size/8;i++)
-        PAGING_MAP(mb2_info_addr+i*4096);
+    PAGE_MAP(mb2_info_addr);
+    u32 size=(u32)VIRT(mb2_info_addr)[0]; // Todo: check for size
+    PAGE_RMAP(mb2_info_addr, size);
 
-    char *location=((char*)mb2_info_addr)+8; // Goto first tag
-    char *start=(char*)mb2_info_addr;
+    char *location=((char*)VIRT(mb2_info_addr))+8; // Goto first tag
+    char *start=(char*)VIRT(mb2_info_addr);
 
     while((location-start) < size){
         // Goto next 64bit align address
@@ -23,6 +22,10 @@ u32* mb2_find_tag(u32 *mb2_info_addr, char type){
         if(cur_type==type){
             return (u32*)location;
         }
+        if(type > 30){
+            printk("Strange multiboot infos structure...\n");
+            return 0;
+        }
         location+=cur_size;
     }