Loading...
/* 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, see <http://www.gnu.org/licenses/>. */ #include "pthreadP.h" int pthread_spin_lock (pthread_spinlock_t *lock) { __asm__ __volatile__ ("1: ldstub [%0], %%g2\n" " orcc %%g2, 0x0, %%g0\n" " bne,a 2f\n" " ldub [%0], %%g2\n" ".subsection 2\n" "2: orcc %%g2, 0x0, %%g0\n" " bne,a 2b\n" " ldub [%0], %%g2\n" " b,a 1b\n" ".previous" : /* no outputs */ : "r" (lock) : "g2", "memory", "cc"); return 0; } |