Date: Thu, 16 May 2002 22:45:39 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/include atomic.h Message-ID: <200205170545.g4H5jdd33910@freefall.freebsd.org>
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jhb 2002/05/16 22:45:39 PDT
Modified files:
sys/alpha/include atomic.h
Log:
- Apparently, the Alpha ABI mandates that arguments be passed sign-extended
regardless of if they are signed or unsigned since it is easier to work
with sign-extended values. Thus, remove the disabled zapnot to
zero-extend the sign-extended value we read from *p in atomic_cmpset_32()
since the cmpval we are comparing against should already be
sign-extended.
- To ensure that the compiler knows to sign-extend the upper 32 bits of
cmpval rather than leaving garbage in there, cast the appropriately in
the constraints section.
Help from: Richard Henderson <rth@redhat.com>
Revision Changes Path
1.14 +1 -4 src/sys/alpha/include/atomic.h
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