ARM seven exception models

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ARM supports seven types of exception, and a privileged processing mode for each type. The seven types

of exception are:

ARM 支持七種類型的異常處理模式，每一種類型都是特權(quán)處理，這七種模式分別是：

•reset

加電重啟

•attempted execution of an Undefined instruction

CPU 執(zhí)行到?jīng)]有定義的指令

•software interrupt (SWI) instructions, can be used to make a call to an operating system

軟中斷。用來調(diào)用os kernel

•Prefetch Abort, an instruction fetch memory abort

指令abort

•Data Abort, a data access memory abort

數(shù)據(jù) abort

•IRQ, normal interrupt

普通中斷

•FIQ, fast interrupt.

快速中斷