/* Machine-dependent pthreads configuration and inline functions.   i686 version.   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Richard Henderson <rth@tamu.edu>.   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_EI# define PT_EI extern inline#endif/* 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__ ("%esp");/* Spinlock implementation; required.  */PT_EI inttestandset (int *spinlock){  int ret;  __asm__ __volatile__ (	"xchgl %0, %1"	: "=r"(ret), "=m"(*spinlock)	: "0"(1), "m"(*spinlock)	: "memory");  return ret;}/* Compare-and-swap for semaphores.  It's always available on i686.  */#define HAS_COMPARE_AND_SWAPPT_EI int__compare_and_swap (long int *p, long int oldval, long int newval){  char ret;  long int readval;  __asm__ __volatile__ ("lock; cmpxchgl %3, %1; sete %0"			: "=q" (ret), "=m" (*p), "=a" (readval)			: "r" (newval), "m" (*p), "a" (oldval)			: "memory");  return ret;}/* Use the LDT implementation only if the kernel is fixed.  *///#include "../useldt.h"