/* Count bits in CPU set. x86-64 multi-arch version. This file is part of the GNU C Library. Copyright (C) 2008-2016 Free Software Foundation, Inc. Contributed by Ulrich Drepper . The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see . */ #include #include "init-arch.h" #define __sched_cpucount static generic_cpucount #include #undef __sched_cpucount #define POPCNT(l) \ ({ __cpu_mask r; \ asm ("popcnt %1, %0" : "=r" (r) : "0" (l));\ r; }) #define __sched_cpucount static popcount_cpucount #include #undef __sched_cpucount libc_ifunc (__sched_cpucount, HAS_CPU_FEATURE (POPCOUNT) ? popcount_cpucount : generic_cpucount);