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author | Roland McGrath <roland@hack.frob.com> | 2014-06-12 09:05:54 -0700 |
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committer | Roland McGrath <roland@hack.frob.com> | 2014-06-12 09:05:54 -0700 |
commit | 45262aeedf2f56dcd3b30e37630ea85bb4f55603 (patch) | |
tree | 726ce7b82a5d652713e514fa2811244fe647e5a7 /sysdeps/sh/nptl/pthread_spin_lock.c | |
parent | 35a5e3e338ae17f3d42c60a708763c5d498fb840 (diff) | |
download | glibc-45262aeedf2f56dcd3b30e37630ea85bb4f55603.tar.gz glibc-45262aeedf2f56dcd3b30e37630ea85bb4f55603.tar.xz glibc-45262aeedf2f56dcd3b30e37630ea85bb4f55603.zip |
Move SH code out of nptl/ subdirectory.
Diffstat (limited to 'sysdeps/sh/nptl/pthread_spin_lock.c')
-rw-r--r-- | sysdeps/sh/nptl/pthread_spin_lock.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/sh/nptl/pthread_spin_lock.c b/sysdeps/sh/nptl/pthread_spin_lock.c new file mode 100644 index 0000000000..e4bf190075 --- /dev/null +++ b/sysdeps/sh/nptl/pthread_spin_lock.c @@ -0,0 +1,34 @@ +/* Copyright (C) 2003-2014 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 "pthreadP.h" + +int +pthread_spin_lock (lock) + pthread_spinlock_t *lock; +{ + unsigned int val; + + do + asm volatile ("tas.b @%1; movt %0" + : "=&r" (val) + : "r" (lock) + : "memory"); + while (val == 0); + + return 0; +} |