feat: gdt, attributes move, reorder

Added late gdt setup with initial tss Moved attributes to include root Reordered some imports
2021-03-21 17:34:38 +01:00
parent 513693189e
commit 20ab9e1d6e
28 changed files with 351 additions and 121 deletions
--- a/kernel/cpu/gdt.S
+++ b/kernel/cpu/gdt.S
@@ -0,0 +1,18 @@
+.code32
+.extern gdt_ptr
+
+.global _gdt_switch
+_gdt_switch:
+    lgdt gdt_ptr
+    movw $0x10,%ax
+    movw %ax,%ds
+    movw %ax,%es
+    movw %ax,%fs
+    movw %ax,%gs
+    ljmp $0x8, $_gdt_switch_continue
+_gdt_switch_continue:
+    movw $0x2a, %ax // 0x28 + 0x03 = 0x2a
+    ltr %ax
+    ret
+
+