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authorUlrich Drepper <drepper@redhat.com>2003-02-05 09:54:24 +0000
committerUlrich Drepper <drepper@redhat.com>2003-02-05 09:54:24 +0000
commita88c9263686012ca2a336379b7d66e59dea2b43b (patch)
treef83540ebdedecb23aa76a4e84e2e5c370bf9809d /nptl/sysdeps/s390/pthread_spin_lock.c
parentec609a8e77b592e5f8ef95fd2c1d44015a45d063 (diff)
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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.c34
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;
+}