diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/arm/pthread_spin_lock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/arm/pthread_spin_lock.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S new file mode 100644 index 000000000..614711446 --- /dev/null +++ b/libpthread/nptl/sysdeps/arm/pthread_spin_lock.S @@ -0,0 +1,32 @@ +/* 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. */ + +#include <sysdep.h> + + .text + .align 4 + +ENTRY (pthread_spin_lock) + mov r1, #1 +1: swp r2, r1, [r0] + teq r2, #0 + bne 1b + mov r0, #0 + PSEUDO_RET_NOERRNO +END (pthread_spin_lock) + |