Add the 8 and 16 bit atomic load/store functions with a barrier
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Authored by andrew on Dec 30 2019, 9:59 AM.

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cem
manu

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arm64

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rS356316: Add the 8 and 16 bit atomic load/store functions with a barrier on arm64.

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rS FreeBSD src repository - subversion

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andrew created this revision.Dec 30 2019, 9:59 AM

Herald added a reviewer: manu. · View Herald TranscriptDec 30 2019, 9:59 AM

Herald added a subscriber: emaste. · View Herald Transcript

Harbormaster completed remote builds in B28376: Diff 66135.Dec 30 2019, 9:59 AM

andrew mentioned this in D22963: Expand generic subword atomic primitives.Dec 30 2019, 10:00 AM

I don't know anything about arm64, but this looks great to me, thanks. The half- and byte-suffix variants are available in the base arm64 ISA, right?

This revision is now accepted and ready to land.Dec 31 2019, 12:20 AM

In D22966#503493, @cem wrote:

The half- and byte-suffix variants are available in the base arm64 ISA, right?

Yes, we target ARMv8.0 by default (the base 64-bit ISA).

Closed by commit rS356316: Add the 8 and 16 bit atomic load/store functions with a barrier on arm64. (authored by andrew). · Explain WhyJan 3 2020, 10:04 AM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rS356316: Add the 8 and 16 bit atomic load/store functions with a barrier on arm64..

Herald added a subscriber: imp. · View Herald TranscriptJan 3 2020, 10:04 AM

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head/

sys/

arm64/

include/

atomic.h

50 lines

Diff 66290

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head/sys/arm64/include/atomic.h

Add the 8 and 16 bit atomic load/store functions with a barrierClosedPublicActions