1 files changed, 25 insertions, 0 deletions

diff --git a/src/core/gdt.S b/src/core/gdt.S
new file mode 100644
index 0000000..f928b3f
--- /dev/null
+++ b/src/core/gdt.S
@@ -0,0 +1,25 @@
+.code64
+
+gdt64:
+    gdt64_null:
+    .long 0
+    .long 0
+    gdt64_cs:
+    .long 0
+    .byte 0
+    .byte 0b10011100
+    .byte 0b00100000
+    .byte 0
+    gdt64_ds:
+    .long 0
+    .byte 0
+    .byte 0b10010010
+    .word 0
+gdtr:
+    .word . - gdt64 - 1
+    .quad gdt64
+
+.global load_gdt
+load_gdt:
+    lgdt (gdtr)
+    ret