/* Machine-dependent pthreads configuration and inline functions.   CRIS version.   Copyright (C) 2001, 2002 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; see the file COPYING.LIB.  If not,   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,   Boston, MA 02111-1307, USA.  */#ifndef _PT_MACHINE_H#define _PT_MACHINE_H   1#ifndef PT_EI# define PT_EI extern inline#endifextern long int testandset (int *spinlock);extern int __compare_and_swap (long int *p, long int oldval, long int newval);PT_EI long inttestandset (int *spinlock){  register unsigned long int ret;  /* Note the use of a dummy output of *spinlock to expose the write.  The     memory barrier is to stop *other* writes being moved past this code.  */  __asm__ __volatile__("clearf\n"		       "0:\n\t"		       "movu.b [%2],%0\n\t"		       "ax\n\t"		       "move.b %3,[%2]\n\t"		       "bwf 0b\n\t"		       "clearf"		       : "=&r" (ret), "=m" (*spinlock)		       : "r" (spinlock), "r" ((int) 1)		       : "memory");  return ret;}/* Get some notion of the current stack.  Need not be exactly the top   of the stack, just something somewhere in the current frame.   I don't trust register variables, so let's do this the safe way.  */#define CURRENT_STACK_FRAME \ ({ char *sp; __asm__ ("move.d $sp,%0" : "=rm" (sp)); sp; })#endif /* pt-machine.h */