Date: Mon, 7 Dec 2009 02:17:58 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r200202 - head/contrib/bind9/lib/isc/ia64/include/isc Message-ID: <200912070217.nB72HwJx038731@svn.freebsd.org>
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Author: marcel Date: Mon Dec 7 02:17:58 2009 New Revision: 200202 URL: http://svn.freebsd.org/changeset/base/200202 Log: Fix Read-After-Write (RAW) dependency violation for ar.ccv in isc_atomic_xadd() and isc_atomic_cmpxchg(). Approved by: dougb@ MFC after: 1 week Modified: head/contrib/bind9/lib/isc/ia64/include/isc/atomic.h Modified: head/contrib/bind9/lib/isc/ia64/include/isc/atomic.h ============================================================================== --- head/contrib/bind9/lib/isc/ia64/include/isc/atomic.h Mon Dec 7 01:46:39 2009 (r200201) +++ head/contrib/bind9/lib/isc/ia64/include/isc/atomic.h Mon Dec 7 02:17:58 2009 (r200202) @@ -41,7 +41,7 @@ isc_atomic_xadd(isc_int32_t *p, isc_int3 for (prev = *(volatile isc_int32_t *)p; ; prev = swapped) { swapped = prev + val; __asm__ volatile( - "mov ar.ccv=%2;" + "mov ar.ccv=%2;;" "cmpxchg4.acq %0=%4,%3,ar.ccv" : "=r" (swapped), "=m" (*p) : "r" (prev), "r" (swapped), "m" (*p) @@ -84,7 +84,7 @@ isc_atomic_cmpxchg(isc_int32_t *p, isc_i isc_int32_t ret; __asm__ volatile( - "mov ar.ccv=%2;" + "mov ar.ccv=%2;;" "cmpxchg4.acq %0=%4,%3,ar.ccv" : "=r" (ret), "=m" (*p) : "r" (cmpval), "r" (val), "m" (*p)
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