diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/pthread_spin_lock.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/pthread_spin_lock.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/pthread_spin_lock.S b/sysdeps/sparc/sparc64/pthread_spin_lock.S new file mode 100644 index 0000000000..aec66542de --- /dev/null +++ b/sysdeps/sparc/sparc64/pthread_spin_lock.S @@ -0,0 +1,31 @@ +/* Copyright (C) 2012-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 <sysdep.h> + + .text +ENTRY(pthread_spin_lock) +1: ldstub [%o0], %g1 + brnz,pn %g1, 2f + membar #StoreLoad | #StoreStore + retl + mov 0, %o0 +2: ldub [%o0], %g1 + brnz,pt %g1, 2b + membar #LoadLoad + ba,a,pt %xcc, 1b +END(pthread_spin_lock) |