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43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
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/* Count bits in CPU set. x86-64 multi-arch version.
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This file is part of the GNU C Library.
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Copyright (C) 2008 Free Software Foundation, Inc.
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Contributed by Ulrich Drepper <drepper@redhat.com>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifdef SHARED
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# include <sched.h>
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# include "init-arch.h"
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# define __sched_cpucount static generic_cpucount
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# include <posix/sched_cpucount.c>
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# undef __sched_cpucount
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# define POPCNT(l) \
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({ __cpu_mask r; \
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asm ("popcntq %1, %0" : "=r" (r) : "0" (l));\
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r; })
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# define __sched_cpucount static popcount_cpucount
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# include <posix/sched_cpucount.c>
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# undef __sched_cpucount
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libc_ifunc (__sched_cpucount,
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INTEL_HAS_POPCOUNT || AMD_HAS_POPCOUNT
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? popcount_cpucount : generic_cpucount);
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#else
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# include_next <sched_cpucount.c>
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#endif
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