update name of code to labcodes

labcodes/lab1/kern/mm/memlayout.h

@@ -0,0 +1,29 @@
+#ifndef __KERN_MM_MEMLAYOUT_H__
+#define __KERN_MM_MEMLAYOUT_H__
+
+/* This file contains the definitions for memory management in our OS. */
+
+/* global segment number */
+#define SEG_KTEXT    1
+#define SEG_KDATA    2
+#define SEG_UTEXT    3
+#define SEG_UDATA    4
+#define SEG_TSS        5
+
+/* global descrptor numbers */
+#define GD_KTEXT    ((SEG_KTEXT) << 3)        // kernel text
+#define GD_KDATA    ((SEG_KDATA) << 3)        // kernel data
+#define GD_UTEXT    ((SEG_UTEXT) << 3)        // user text
+#define GD_UDATA    ((SEG_UDATA) << 3)        // user data
+#define GD_TSS        ((SEG_TSS) << 3)        // task segment selector
+
+#define DPL_KERNEL    (0)
+#define DPL_USER    (3)
+
+#define KERNEL_CS    ((GD_KTEXT) | DPL_KERNEL)
+#define KERNEL_DS    ((GD_KDATA) | DPL_KERNEL)
+#define USER_CS        ((GD_UTEXT) | DPL_USER)
+#define USER_DS        ((GD_UDATA) | DPL_USER)
+
+#endif /* !__KERN_MM_MEMLAYOUT_H__ */
+