ARMv7 CPU的exception table,通常如下：
Reset
Undefined
Supervisor Call
Prefetch Abort
Data Abort
Not used : 不太清楚什么情况下，会进入它的entry point?
IRQ
FIQ
ARMv7 CPU的exception table,通常如下：
Reset
Undefined
Supervisor Call
Prefetch Abort
Data Abort
Not used : 不太清楚什么情况下，会进入它的entry point?
IRQ
FIQ
0x14 is normally not used. However, with Hypervisor Extension, this offset is used for Hyp Trap.
For details, please refer to Table B1-3 of the ARM ARM (0406C.b)
