glibc/sysdeps/x86_64/sched_cpucount.c
Ulrich Drepper 36dffb2256 * posix/sched_cpucount.c (__sched_cpucount): Allow using special
instruction for counting bits.
	* sysdeps/x86_64/sched_cpucount.c: New file.
2007-06-08 19:23:19 +00:00

27 lines
1.0 KiB
C

/* Copyright (C) 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifdef __amdfam10
# define POPCNT(l) \
({ __cpu_mask r; \
asm ("popcntq %1, %0" : "=r" (r) : "0" (l)); \
r; })
#endif
#include <posix/sched_cpucount.c>