/* 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); }