Add: GDT, entry initializing for code and data segments

2024-07-14 10:22:42 +02:00
parent 2b05b8b74f
commit 007018790a
9 changed files with 80 additions and 2 deletions
--- a/loader.s
+++ b/loader.s
@@ -14,6 +14,7 @@ align 4
 extern kmain

 loader:
+  cli
  ; mov eax, 0xCAFEBABE
  push dword 42
  call kmain
@@ -21,6 +22,22 @@ loader:
 .loop:
  jmp .loop

+global gdt_flush
+extern gp
+
+gdt_flush:
+	lgdt [gp]
+	mov ax, 0x10
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov ss, ax
+	jmp 0x08:flush2
+
+flush2:
+	ret
+
 section .bss
 align 4 
 kernel_stack: