问题描述
通过ARMv8手册，我有以下问题可以帮助您了解全局.
Going thru the ARMv8 manual, I have the following questions to help understand the big picture.
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可以使用旧版32位应用程序. (ARMv7或更早版本)是否可以在ARMv8操作系统上运行?
Can legacy 32 bit app. (ARMv7 or earlier) run as is on the ARMv8 OS?
如果需要为ARMv8重建旧版应用程序，并假设我将其重建为32位(Aarch32)，那么是否需要32位OS基础支持? (很有趣的是，这里知道寻址机制是如何工作的.)
If the legacy applications need to be rebuilt for ARMv8 and assuming that I rebuild the application as 32 bit (Aarch32), does this need 32 bit OS underlying support? (It is interesting to know how the addressing mechanism works here.)
请尽可能提供参考.
PS:我的目标是支持Aarch64(3.7和更高版本)的Linux OS
PS: I am targeting Linux OS with Aarch64 support (3.7 and later)
推荐答案
Aarch64平台可以运行32位ARM，但是此兼容性是可选的.
Aarch64 platform may run 32bit ARM but this compatibility is optional.
要运行AArch32二进制文件，您需要在32位版本中使用的所有库应用程序.与x86-64系统上的i686二进制文件相同.
To run AArch32 binaries you need all libraries application would use in 32bit versions. Same as with i686 binaries on x86-64 systems.
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