riscv: Add implementations of atomic_testand(set|clear)_(32|64|long)
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Authored by jhb on Fri, Nov 15, 8:40 PM.

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Summary

These use amoor and amoand rather than a loop.

Also define atomic_testandset_acq_(64|long) using amoor.aq.

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rG FreeBSD src repository

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Buildable 60619
Build 57503: arc lint + arc unit

jhb requested review of this revision.Fri, Nov 15, 8:40 PM

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sys/

riscv/

include/

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