fix: gdt work I think

2024-09-10 21:36:28 +02:00
parent bc99b99c82
commit 365ed0cc2e
4 changed files with 80 additions and 73 deletions
--- a/src/gdt/set_gdt.s
+++ b/src/gdt/set_gdt.s
@ -0,0 +1,18 @@
+.intel_syntax noprefix
+
+.section .text
+    .global set_gdt
+
+    set_gdt:
+        mov eax, [esp+4]     // 1st parameter : pointer to the IDT
+        lgdt [eax]
+        mov ax, 0x10         // 0x10 is the offset in the GDT to our data segment
+        mov ds, ax           // Load all data segment selectors
+        mov fs, ax
+        mov gs, ax
+        mov es, ax
+        mov ax, 0x18         // 0x18 is the offset in the GDT to our kernel stack
+        mov ss, ax
+        jmp 0x08:.flush      // 0x08 is the offset to our code segment: far jump on it
+    .flush:
+        ret