update

[l4.git] / l4 / pkg / uclibc / lib / contrib / uclibc / libpthread / nptl / sysdeps / arm / pthread_spin_trylock.S

diff --git a/l4/pkg/uclibc/lib/contrib/uclibc/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S b/l4/pkg/uclibc/lib/contrib/uclibc/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S
new file mode 100644 (file)
index 0000000..8593150
--- /dev/null
+++ b/l4/pkg/uclibc/lib/contrib/uclibc/libpthread/nptl/sysdeps/arm/pthread_spin_trylock.S
@@ -0,0 +1,34 @@
+/* Copyright (C) 2005 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+#include <sysdep.h>
+
+       .text
+       .align  4
+
+ENTRY (pthread_spin_trylock)
+       mov     r1, #1
+       swp     r2, r1, [r0]
+       teq     r2, #0
+       moveq   r0, #0
+       movne   r0, #EBUSY
+       PSEUDO_RET_NOERRNO
+END (pthread_spin_trylock)