Vector Table
============

Hardwired memory locations where the cpu will go to on exception.

The linker's ld file makes sure these start at memory location 0x00000000.

::

    _vectors:
       ldr pc, ResetAddr    /* Reset                 */
       ldr pc, UndefAddr    /* Undefined instruction */
       ldr pc, SWIAddr      /* Software interrupt    */
       ldr pc, PAbortAddr   /* Prefetch abort        */
       ldr pc, DAbortAddr   /* Data abort            */
       ldr pc, ReservedAddr /* Reserved              */
       ldr pc, IRQAddr      /* IRQ interrupt         */
       ldr pc, FIQAddr      /* FIQ interrupt         */