diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/cris/pt-machine.h')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/cris/pt-machine.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/libpthread/linuxthreads/sysdeps/cris/pt-machine.h b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h index 9b2acb761..a89579ee0 100644 --- a/libpthread/linuxthreads/sysdeps/cris/pt-machine.h +++ b/libpthread/linuxthreads/sysdeps/cris/pt-machine.h @@ -14,9 +14,8 @@ 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; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - + License along with the GNU C Library; see the file COPYING.LIB. If not, + see <http://www.gnu.org/licenses/>. */ #ifndef _PT_MACHINE_H #define _PT_MACHINE_H 1 @@ -33,6 +32,19 @@ testandset (int *spinlock) /* Note the use of a dummy output of *spinlock to expose the write. The memory barrier is to stop *other* writes being moved past this code. */ + +#ifdef __arch_v32 + __asm__ __volatile__("clearf p\n" + "0:\n\t" + "movu.b [%2],%0\n\t" + "ax\n\t" + "move.b %3,[%2]\n\t" + "bcs 0b\n\t" + "clearf p" + : "=&r" (ret), "=m" (*spinlock) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) + : "memory"); +#else /* not __arch_v32 */ __asm__ __volatile__("clearf\n" "0:\n\t" "movu.b [%2],%0\n\t" @@ -41,8 +53,9 @@ testandset (int *spinlock) "bwf 0b\n\t" "clearf" : "=&r" (ret), "=m" (*spinlock) - : "r" (spinlock), "r" ((int) 1) + : "r" (spinlock), "r" ((int) 1), "m" (*spinlock) : "memory"); +#endif /* __arch_v32 */ return ret; } |