Add multiboot stub (currently broken)

2025-07-24 21:51:43 +00:00 · 2023-04-30 20:01:38 +03:00
parent 5e81421ec6
commit 2fbb8e3df2
19 changed files with 1287 additions and 50 deletions
--- a/Architecture/amd64/Bootstrap/GDT32.asm
+++ b/Architecture/amd64/Bootstrap/GDT32.asm
@@ -0,0 +1,47 @@
+[bits 32]
+section .bootstrap.text
+
+align 32
+global gdtr
+gdtr:
+    dw GDT32_END - GDT32 - 1
+    dd GDT32
+
+align 32
+GDT32:
+    dq 0x0
+
+    dw 0xffff
+    dw 0x0000
+    db 0x00
+    dw 0xcf9a
+    db 0x00
+
+    dw 0xffff
+    dw 0x0000
+    db 0x00
+    dw 0xcf92
+    db 0x00
+
+    dw 0x0100
+    dw 0x1000
+    db 0x00
+    dw 0x4092
+    db 0x00
+GDT32_END:
+
+global LoadGDT32
+LoadGDT32:
+	lgdt [gdtr]
+
+	jmp 0x8:ActivateGDT
+	ActivateGDT:
+		mov cx, 0x10
+		mov ss, cx
+		mov ds, cx
+		mov es, cx
+		mov fs, cx
+		mov cx, 0x18
+		mov gs, cx
+
+    ret