Initial commit

2026-02-04 01:58:49 +01:00
commit 0e01345abf
117 changed files with 5076 additions and 0 deletions
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <kernel/compiler.h>
+#include <stdint.h>
+#include "tss.h"
+
+struct [[__packed]] gdt {
+    uint64_t null;
+    uint64_t kernel_code32;
+    uint64_t kernel_data32;
+    uint64_t kernel_code64;
+    uint64_t kernel_data64;
+    uint64_t user_code;
+    uint64_t user_data;
+    uint64_t user_code64;
+    uint64_t tss[2];
+};
+
+struct [[__packed]] gdtr {
+    uint16_t limit;
+    struct gdt* base;
+};
+
+// Initializes a GDT on the local core.
+void gdt_init();
+
+// Sets the Task State Segment in the given GDT.
+void gdt_set_tss(struct gdt* gdt, struct tss* tss);