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425ce2ed UD |
1 | /* Count bits in CPU set. x86-64 multi-arch version. |
2 | This file is part of the GNU C Library. | |
04277e02 | 3 | Copyright (C) 2008-2019 Free Software Foundation, Inc. |
425ce2ed UD |
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 | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
425ce2ed | 19 | |
8ea23729 UD |
20 | #include <sched.h> |
21 | #include "init-arch.h" | |
425ce2ed | 22 | |
8ea23729 UD |
23 | #define __sched_cpucount static generic_cpucount |
24 | #include <posix/sched_cpucount.c> | |
25 | #undef __sched_cpucount | |
425ce2ed | 26 | |
8ea23729 | 27 | #define POPCNT(l) \ |
425ce2ed | 28 | ({ __cpu_mask r; \ |
6f6f1215 | 29 | asm ("popcnt %1, %0" : "=r" (r) : "0" (l));\ |
425ce2ed | 30 | r; }) |
8ea23729 UD |
31 | #define __sched_cpucount static popcount_cpucount |
32 | #include <posix/sched_cpucount.c> | |
33 | #undef __sched_cpucount | |
425ce2ed UD |
34 | |
35 | libc_ifunc (__sched_cpucount, | |
c22e4c2a | 36 | HAS_CPU_FEATURE (POPCNT) ? popcount_cpucount : generic_cpucount); |