/* Copyright (C) 2003 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Jakub Jelinek <jakub@redhat.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 (pthread_spinlock_t *lock){  __asm __volatile    ("1: ldstub  [%0], %%g2\n"     "   brnz,pn %%g2, 2f\n"     "    membar #StoreLoad | #StoreStore\n"     ".subsection 2\n"     "2: ldub    [%0], %%g2\n"     "   brnz,pt %%g2, 2b\n"     "    membar #LoadLoad\n"     "   b,a,pt  %%xcc, 1b\n"     ".previous"     : /* no outputs */     : "r" (lock)     : "g2", "memory");  return 0;}