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-rw-r--r--include/arch/x86_64/gdt.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/arch/x86_64/gdt.h b/include/arch/x86_64/gdt.h
new file mode 100644
index 0000000..c17c9eb
--- /dev/null
+++ b/include/arch/x86_64/gdt.h
@@ -0,0 +1,23 @@
+#ifndef _JOVE_x86_64_GDT_H
+#define _JOVE_x86_64_GDT_H 1
+
+#include "tables.h"
+
+enum
+{
+ GDT_SEGMENT_KERNEL_NULL = 0,
+ GDT_SEGMENT_KERNEL_CODE,
+ GDT_SEGMENT_KERNEL_DATA,
+
+ GDT_SEGMENT_USER_NULL,
+ GDT_SEGMENT_USER_DATA,
+ GDT_SEGMENT_USER_CODE,
+
+ GDT_SEGMENT_TSS_LOW,
+ GDT_SEGMENT_TSS_HIGH,
+
+ GDT_SEGMENT_COUNT
+};
+typedef segment_descriptor_t gdt_t[GDT_SEGMENT_COUNT];
+
+#endif