# F08: smallsys contributed by < `afcidk` > * [F08: smallsys](https://hackmd.io/s/BkhVVlHu4) ## 自我檢查清單 ### AArch64 個別通用暫存器的作用 AArch64 有 31 個通用暫存器 ### AArch64 的 Exception model AArch64 有四層的例外等級,從 E3 到 E 0 依序為 highest 到 lowest priviledge。 ![](https://i.imgur.com/Dekinr5.png) ## 產生針對 AArch64 的 linux kernel image 我們要使用 buildroot ## Reference * [ARMv8 Architecture](https://www.arm.com/files/downloads/ARMv8_Architecture.pdf)
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