Date: Sat, 20 Oct 2007 22:18:42 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 in_cksum.c src/sys/i386/include in_cksum.h Message-ID: <200710202218.l9KMIgpL068209@repoman.freebsd.org>
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bz 2007-10-20 22:18:42 UTC
FreeBSD src repository
Modified files:
sys/i386/i386 in_cksum.c
sys/i386/include in_cksum.h
Log:
Fold multiple asm statements into one so that the compiler at a certain
optimization level (-march=pentium-mmx for example) does not insert
intermediate ops which would trash the carry.
Change both sys/i386/i386/in_cksum.c[1] and sys/i386/include/in_cksum.h.
To my best understanding the same problem was addressed in rev. 1.16
of src/sys/i386/include/in_cksum.h for just a single function 3y ago.
Reviewed by: jhb
Submitted by: Zhouyi ZHOU <zhouzhouyi FreeBSD.org> (intial version of [1])
MFC after: 5 days
PR: 115678, 69257
Revision Changes Path
1.29 +77 -43 src/sys/i386/i386/in_cksum.c
1.18 +14 -7 src/sys/i386/include/in_cksum.h
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