/* Machine-dependent pthreads configuration and inline functions.   ARM version.   Copyright (C) 1997, 1998 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Philip Blundell <philb@gnu.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.  */#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.  *//* it is weird and dangerous to disable interrupt in userspace, but for nios   what else we can do before we have a swap like instruction?  This is better   than nothing */PT_EI long inttestandset (int *spinlock){  unsigned int ret;  __asm__ __volatile__("pfx 8\n\t"  			"wrctl %1	; disable interrupt\n\t"			"nop\n\t"			"nop\n\t"  			"ld %0, [%2]\n\t"  			"st [%2], %1\n\t"  			"pfx 9\n\t"  			"wrctl %1	; enable interrupt\n\t"			"nop\n\t"			"nop\n\t" 		       : "=&r"(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");/* nios needs more because of reg windows */#define THREAD_MANAGER_STACK_SIZE (32*1024)#define STACK_SIZE	(32*1024)#endif /* pt-machine.h */