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Differential D58986

contrib/ck: keep dcas parameters thin under bounds-safety
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Authored by abhijeetsharma2002_gmail.com on Aug 19 2026, 12:03 PM.
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imp

Details

Reviewers
rpaulo
emaste
andrew
Summary

Under -fbounds-safety a uint64_t [2] parameter becomes a bounds-carrying
pointer, which cannot be an inline assembly operand. Plain uint64_t * is
identical in C and carries no bound. Vendor declarations stay in the
#else for the next CK import.

Sponsored by: The FreeBSD Foundation

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 75739
Build 72622: arc lint + arc unit

Event Timeline

abhijeetsharma2002_gmail.com created this revision.Aug 19 2026, 12:03 PM
Herald added a reviewer: andrew. · View Herald TranscriptAug 19 2026, 12:03 PM
Herald added a subscriber: imp. · View Herald Transcript
abhijeetsharma2002_gmail.com requested review of this revision.Aug 19 2026, 12:03 PM
Harbormaster completed remote builds in B75739: Diff 184353.Aug 19 2026, 12:03 PM
abhijeetsharma2002_gmail.com added a parent revision: D58985: sys: build core headers under bounds-safety.Aug 19 2026, 12:03 PM
abhijeetsharma2002_gmail.com added a child revision: D58987: kern: add bounds-safety soft-trap runtime.
rpaulo added inline comments.Aug 27 2026, 10:41 PM
sys/contrib/ck/include/gcc/aarch64/ck_pr_llsc.h
42

Wouldn’t this work?

abhijeetsharma2002_gmail.com added inline comments.Sep 4 2026, 3:29 AM
sys/contrib/ck/include/gcc/aarch64/ck_pr_llsc.h
42

Hey, unfortunately not. The issue is that any pointer with bounds cannot be used with inline assembly.

rpaulo accepted this revision.Sep 5 2026, 12:15 AM
This revision is now accepted and ready to land.Sep 5 2026, 12:15 AM

Revision Contents
Changeset List

PathSize
sys/
contrib/
ck/
include/
gcc/
aarch64/
16 lines
x86_64/
25 lines

Diff 184353

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sys/contrib/ck/include/gcc/aarch64/ck_pr_llsc.h

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sys/contrib/ck/include/gcc/x86_64/ck_pr.h

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