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1 | /* Copyright (C) 2005 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
18 | ||
da1ea0f0 | 19 | #include "pthreadP.h" |
da1ea0f0 CD |
20 | |
21 | int | |
22 | pthread_spin_unlock (pthread_spinlock_t *lock) | |
23 | { | |
da1ea0f0 CD |
24 | int tmp = 0; |
25 | /* This should be a memory barrier to newer compilers */ | |
26 | __asm__ __volatile__ ("stw,ma %1,0(%0)" | |
27 | : : "r" (lock), "r" (tmp) : "memory"); | |
28 | return 0; | |
29 | } |