GDT_SCR_MSG_TEXT
gccb->gc_scratch[GDT_SCR_MSG_TEXT + msg_len] = '\0';
kprintf("%s",&gccb->gc_scratch[GDT_SCR_MSG_TEXT]);
gccb->gc_scratch[GDT_SCR_MSG_TEXT] = 0;
gccb->gc_scratch[GDT_SCR_MSG_TEXT] = 1;
gccb->gc_scratch[GDT_SCR_MSG_TEXT + 1] = 0;