reimplements the gdt

2025-05-29 10:17:18 -04:00
parent 9b980767d7
commit afcf0bea09
3 changed files with 37 additions and 0 deletions
--- a/kernel/arch/gdt/gdt.s
+++ b/kernel/arch/gdt/gdt.s
@ -0,0 +1,23 @@
+gdtr 	DW 0 ; limit store
+	DD 0 ; base storage
+
+global setGdt
+setGdt:
+	mov ax, [esp + 4]
+	mov [gdtr], ax
+	mov eax, [esp + 8]
+	mov [gdtr + 2], eax
+	lgdt [gdtr]
+	ret
+
+global reloadSegments
+reloadSegments:
+	jmp 0x08:.reload_CS ; 0x08 is a stand in for the code segment
+.reload_CS:
+	mov ax, 0x10 ; stand in for the data segment
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov ss, ax
+	ret
--- a/kernel/arch/gdt/gdt_entry.c
+++ b/kernel/arch/gdt/gdt_entry.c