Adding code

1 files changed, 13 insertions, 0 deletions

diff --git a/include/03.gdt/gdt05.c b/include/03.gdt/gdt05.c
new file mode 100644
index 0000000..d525a13
--- /dev/null
+++ b/include/03.gdt/gdt05.c
@@ -0,0 +1,13 @@
+void init_gdt_table()
+{
+    gdtp.size=sizeof(gdt)-1;
+    gdtp.offset=(uint32_t)&gdt;
+
+    init_gdt_entry(0,0,0,0,0);					// null segment
+    init_gdt_entry(1,0xffffffff,0,0b10011010,0b11001111);	// code segment
+    init_gdt_entry(2,0xffffffff,0,0b10010010,0b11001111);	// data segment
+    init_gdt_entry(3,0xffffffff,0,0b11111010,0b11001111);	// user mode code segment
+    init_gdt_entry(4,0xffffffff,0,0b11110010,0b11001111);	// user mode data segment
+
+    load_gdt(&gdtp);
+}