1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/include/main/gdt.h b/kernel/include/main/gdt.h
new file mode 100644
index 0000000..a991cbf
--- /dev/null
+++ b/kernel/include/main/gdt.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "types.h"
+
+#define GDT_COUNT 16
+
+#define GDT_ZERO 0x00
+#define GDT_KERNEL_TEXT 0x08
+#define GDT_KERNEL_DATA 0x10
+#define GDT_USER_TEXT 0x18
+#define GDT_USER_DATA 0x20
+#define GDT_TSS 0x28
+
+void gdt_init(void);
+
+void gdt_set_kernel_stack(void *addr);
+
+void gdt_set_entry(uint32_t segment, uint32_t base, uint32_t limit,
+                   uint8_t ring, int exec, int dir, int rw);
+
+void gdt_clear(uint32_t segment);
+\ No newline at end of file