/* Machine-dependent pthreads configuration and inline functions.   nios2 version.   Copyright (C) 1996, 1998, 2000, 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);/* Spinlock implementation; required.  */PT_EI long inttestandset (int *spinlock){  unsigned int scratch;  long int ret=-2;  __asm__ __volatile__(         "rdctl %0, status\n\t"         "and	%0, %0, %1\n\t"         "wrctl status, %0   #disable interrupts\n\t"         "ldw %1, 0(%4)\n\t"         "stw %3, 0(%4)\n\t"         "ori	%0, %0, 1\n\t"         "wrctl status, %0   #enable interrupts\n\t"       : "=&r"(scratch), "=r"(ret)       : "1"(ret), "r"(1), "r"(spinlock)       : "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.  */#define CURRENT_STACK_FRAME  stack_pointerregister char * stack_pointer __asm__ ("%sp");#endif /* pt-machine.h */