Date: Sun, 22 Oct 2006 07:00:07 +0000 (UTC) From: Bruce Evans <bde@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/include atomic.h Message-ID: <200610220700.k9M707nM006422@repoman.freebsd.org>
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bde 2006-10-22 07:00:07 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_4)
sys/i386/include atomic.h
Log:
MFC: parts of the following, so that atomic.h in RELENG_4 can be
compiled by RELENG_6's compiler:
1.26: pass constraints as a parameter since chars and shorts need
different ones.
1.27: fix pedantic syntax errors.
1.40: don't use the '+' constraint so much, since gcc-3.3.mumble broke
it for non-register operands.
1.40 essentially backs outs 1.22, and also avoids using the "0"
constraint, and also remumbers asm parameters. 1.22 had already been
merged to RELENG_4 in 1.9.2.2 in order to fix compiling with -O0 with
RELENG_4's compiler. This turned out to be not future-proof. I think
the "0" constaint would work with gcc-3, but not using it is a better
way to fix compiling with -O0 in RELENG_4. Problems in this area go
back to gcc-2.early or gcc-1 when the "0" and "+" constraints didn't
exist and there were no correct alternatives for them. 1.9.2.1
unnecessarily used an incorrect alternative that happened to work
except for -O0.
This change is essentially null when compiled by RELENG_4's compiler.
For GENERIC, LINT and one other configuration, it changes no object
files except atomic.o compiled with -O0; for the latter it gives
different register allocation and some unused instructions.
Revision Changes Path
1.9.2.5 +26 -25 src/sys/i386/include/atomic.h
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