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/* 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);

}