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Differential D26614

fix skein1024
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Authored by yzhong_freebsdfoundation.org on Sep 30 2020, 8:25 PM.
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allanjude
cem
imp

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Reviewers
cem
emaste
arichardson
jmg
Commits
rS366344: libmd: fix assembly optimized skein implementation
Summary

From https://bugs.freebsd.org/248221:

The optimized assembly implementation of skein1024 "is apparently broken when assembled by contemporary GNU as as well as Clang IAS".

The issue turned out to be using a logical AND instead of a bitwise AND. This patch also re-enables the implementation in the makefile.

Test Plan

Run the skein1024 tests with the fixed code

Diff Detail

Repository
rS FreeBSD src repository - subversion
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Lint Not Applicable
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Tests Not Applicable

Event Timeline

yzhong_freebsdfoundation.org requested review of this revision.Sep 30 2020, 8:25 PM
yzhong_freebsdfoundation.org created this revision.
cem accepted this revision.Oct 1 2020, 12:40 AM
cem added a subscriber: cem.

Yeah, that’d do it. Kind of surprised it ever worked in old gas.

This revision is now accepted and ready to land.Oct 1 2020, 12:40 AM
emaste added reviewers: emaste, arichardson.Oct 1 2020, 12:41 AM
emaste added inline comments.Oct 1 2020, 12:43 AM
sys/crypto/skein/amd64/skein_block_asm.S
59 ↗(On Diff #77699)

I think there's quite a few others, like this one here

emaste added a subscriber: allanjude.Oct 1 2020, 12:45 AM
arichardson added inline comments.Oct 1 2020, 7:56 AM
sys/crypto/skein/amd64/skein_block_asm.S
981 ↗(On Diff #77699)

This probably also needs to be &?

yzhong_freebsdfoundation.org updated this revision to Diff 77752.Oct 1 2020, 7:45 PM

Went through and looked for all instances of &&: all of them should be changed.

This revision now requires review to proceed.Oct 1 2020, 7:45 PM
yzhong_freebsdfoundation.org marked 2 inline comments as done.Oct 1 2020, 7:45 PM
This revision was not accepted when it landed; it landed in state Needs Review.Oct 1 2020, 9:06 PM
Closed by commit rS366344: libmd: fix assembly optimized skein implementation (authored by emaste). · Explain Why
This revision was automatically updated to reflect the committed changes.
emaste added a commit: rS366344: libmd: fix assembly optimized skein implementation.
Herald added a reviewer: jmg. · View Herald TranscriptOct 1 2020, 9:06 PM
Herald added a subscriber: imp. · View Herald Transcript

Revision Contents
Changeset List

PathSize
head/
lib/
libmd/
12 lines
sys/
crypto/
skein/
amd64/
18 lines

Diff 77756

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head/lib/libmd/Makefile

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head/sys/crypto/skein/amd64/skein_block_asm.S

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