nothing works but time to update

gdt.asm

@@ -0,0 +1,29 @@
+gdt_start:
+    dq 0x0          ; The null descriptor (mandatory)
+
+; Code Segment Descriptor
+gdt_code:
+    dw 0xffff       ; Limit
+    dw 0x0          ; Base (bits 0-15)
+    db 0x0          ; Base (bits 16-23)
+    db 10011010b    ; Access byte
+    db 11001111b    ; Flags + Limit (bits 16-19)
+    db 0x0          ; Base (bits 24-31)
+
+; Data Segment Descriptor
+gdt_data:
+    dw 0xffff
+    dw 0x0
+    db 0x0
+    db 10010010b
+    db 11001111b
+    db 0x0
+
+gdt_end:
+
+gdt_descriptor:
+    dw gdt_end - gdt_start - 1
+    dd gdt_start
+
+CODE_SEG equ gdt_code - gdt_start
+DATA_SEG equ gdt_data - gdt_start