Add file "arch/paging.c"

arch/Makefile

@@ -10,6 +10,7 @@ OBJS += main.c.o
 OBJS += logger.c.o console.c.o kprintf.c.o
 OBJS += multiboot.c.o
 OBJS += memory.c.o
+OBJS += paging.c.o
 
 OBJS += protected.c.o protected.asm.cpp.o
 OBJS += exception.c.o exception.asm.cpp.o

arch/paging.c

@@ -0,0 +1,22 @@
+#define PAGES_PER_TABLE 1024
+#define TABLES_PER_DIR  1024
+
+struct page {
+    unsigned int present  : 1;
+    unsigned int rw       : 1;
+    unsigned int user     : 1;
+    unsigned int accessed : 1;
+    unsigned int dirty    : 1;
+    unsigned int unused   : 7;
+    unsigned int frame    : 20;
+};
+
+struct page_table {
+    struct page pages[PAGES_PER_TABLE];
+};
+
+struct page_dir {
+    struct page_table *tables[TABLES_PER_DIR];
+    unsigned int tables_phys[TABLES_PER_DIR];
+    unsigned int phys;
+};