?? pthread_spin_lock.c
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/* Copyright (C) 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003. 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. */#include "pthreadP.h"intpthread_spin_lock (lock) pthread_spinlock_t *lock;{ int oldval; __asm __volatile ("0: lhi %0,0\n" " cs %0,%2,%1\n" " jl 0b" : "=&d" (oldval), "=Q" (*lock) : "d" (1), "m" (*lock) : "cc" ); return 0;}
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