| /* Cloned for uClibc by Paul Mundt, December 2003 */ |
| /* Modified by SuperH, Inc. September 2003 */ |
| |
| /* Machine-dependent pthreads configuration and inline functions. |
| SH5 version. |
| Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Niibe Yutaka <gniibe@m17n.org>. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public License as |
| published by the Free Software Foundation; either version 2 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "pt-machine.h" |
| |
| /* Spinlock implementation; required. */ |
| |
| /* The SH5 does not have a suitable test-and-set instruction (SWAP only |
| operates on an aligned quad word). So we use the SH4 version instead. |
| This must be seperately compiled in SHcompact mode, so it cannot be |
| inline. */ |
| |
| long int testandset (int *spinlock) |
| { |
| int ret; |
| |
| __asm__ __volatile__( |
| "tas.b @%1\n\t" |
| "movt %0" |
| : "=r" (ret) |
| : "r" (spinlock) |
| : "memory", "cc"); |
| |
| return (ret == 0); |
| } |
| |