diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2014-09-20 22:36:23 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2014-09-22 20:35:40 +0200 |
| commit | 4c3023bc803012656cf45749960282351efc8020 (patch) | |
| tree | 979feef511fde3dbe564e5362e89a2e8b793909e /libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S | |
| parent | 51f9b66d2fee1c7c1088b548751ac64131220b6e (diff) | |
xtensa: add support for NPTL
Changes from:
https://github.com/foss-xtensa/uClibc/commits/xtensa_nptl
Author: Chris Zankel <chris@zankel.net>
Author: Baruch Siach <baruch@tkos.co.il>
Diffstat (limited to 'libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S')
| -rw-r--r-- | libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S b/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S new file mode 100644 index 000000000..1e220a863 --- /dev/null +++ b/libpthread/nptl/sysdeps/xtensa/pthread_spin_lock.S @@ -0,0 +1,37 @@ +/* Copyright (C) 2012 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. */ + + .text + .align 4 + + .globl pthread_spin_lock +pthread_spin_lock: + + entry a1, 16 + + movi a3, 0 + wsr a3, scompare1 + movi a3, 1 +1: s32c1i a3, a2, 0 + bnez a3, 1b + movi a2, 0 + + retw + + .type pthread_spin_lock, @function + .size pthread_spin_lock, .-pthread_spin_lock |