diff options
Diffstat (limited to 'winsup/mingw/mingwex/membarrier.c')
| -rw-r--r-- | winsup/mingw/mingwex/membarrier.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/membarrier.c b/winsup/mingw/mingwex/membarrier.c new file mode 100644 index 000000000..b8da9f7de --- /dev/null +++ b/winsup/mingw/mingwex/membarrier.c @@ -0,0 +1,19 @@ +/** + * THIS SOFTWARE IS NOT COPYRIGHTED + * + * This source code is offered for use in the public domain. You may + * use, modify or distribute it freely. + * + * This code is distributed in the hope that it will be useful but + * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY + * DISCLAIMED. This includes but is not limited to warranties of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + */ +void __mingworg_MemoryBarrier(void); +void __mingworg_MemoryBarrier(void) +{ + long Barrier = 0; + __asm__ __volatile__("xchgl %%eax,%0 " + :"=r" (Barrier)); +} + |