diff options
author | Ulrich Drepper <drepper@redhat.com> | 2003-02-05 09:54:24 +0000 |
---|---|---|
committer | Ulrich Drepper <drepper@redhat.com> | 2003-02-05 09:54:24 +0000 |
commit | a88c9263686012ca2a336379b7d66e59dea2b43b (patch) | |
tree | f83540ebdedecb23aa76a4e84e2e5c370bf9809d /nptl/sysdeps/s390/pthread_spin_lock.c | |
parent | ec609a8e77b592e5f8ef95fd2c1d44015a45d063 (diff) | |
download | glibc-a88c9263686012ca2a336379b7d66e59dea2b43b.tar.gz glibc-a88c9263686012ca2a336379b7d66e59dea2b43b.tar.xz glibc-a88c9263686012ca2a336379b7d66e59dea2b43b.zip |
Update.
2003-02-05 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/bits/libc-lock.h (__libc_once): Set control variable for non-libpthread case to the same value the pthread_once function would use.
Diffstat (limited to 'nptl/sysdeps/s390/pthread_spin_lock.c')
-rw-r--r-- | nptl/sysdeps/s390/pthread_spin_lock.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/nptl/sysdeps/s390/pthread_spin_lock.c b/nptl/sysdeps/s390/pthread_spin_lock.c new file mode 100644 index 0000000000..7d0067b0e9 --- /dev/null +++ b/nptl/sysdeps/s390/pthread_spin_lock.c @@ -0,0 +1,34 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include "pthreadP.h" + +int +pthread_spin_lock (lock) + pthread_spinlock_t *lock; +{ + unsigned long int oldval; + + __asm __volatile ("0: lhi %0,0\n" + " cs %0,%2,%1\n" + " jl 0b" + : "=d" (oldval), "=Q" (*lock) + : "d" (1), "m" (*lock) : "cc" ); + return 0; +} |