1/* Count bits in CPU set. x86-64 multi-arch version.
2 This file is part of the GNU C Library.
3 Copyright (C) 2008-2020 Free Software Foundation, Inc.
4 Contributed by Ulrich Drepper <drepper@redhat.com>.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <sched.h>
21#include "init-arch.h"
22
23#define __sched_cpucount static generic_cpucount
24#include <posix/sched_cpucount.c>
25#undef __sched_cpucount
26
27#define POPCNT(l) \
28 ({ __cpu_mask r; \
29 asm ("popcnt %1, %0" : "=r" (r) : "0" (l));\
30 r; })
31#define __sched_cpucount static popcount_cpucount
32#include <posix/sched_cpucount.c>
33#undef __sched_cpucount
34
35libc_ifunc (__sched_cpucount,
36 CPU_FEATURE_USABLE (POPCNT) ? popcount_cpucount : generic_cpucount);
37