/* Machine-dependent pthreads configuration and inline functions.   FR-V version.   Copyright (C) 2004  Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Alexandre Oliva <aoliva@redhat.com>   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 __ASSEMBLER__#ifndef PT_EI# define PT_EI extern inline __attribute__ ((always_inline))#endif/* Spinlock implementation; required.  */PT_EI long inttestandset (int *spinlock){  int i = 1;  asm ("swap%I0 %M0, %1" : "+m"(*(volatile int *)spinlock), "+r"(i));  return i;}/* We want the OS to assign stack addresses.  */#define FLOATING_STACKS 1/* This symbol is defined by the ABI as the stack size requested by   the main program.  */extern char __stacksize;#define ARCH_STACK_MAX_SIZE ((unsigned long)&__stacksize)/* Memory barrier; default is to do nothing */#define MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory")/* Write barrier.  */#define WRITE_MEMORY_BARRIER() __asm__ __volatile__("membar" : : : "memory")/* Return the thread descriptor for the current thread.  */register struct _pthread_descr_struct *THREAD_SELF asm ("gr29");#define THREAD_SELF THREAD_SELF/* Initialize the thread-unique value.  */#define INIT_THREAD_SELF(descr, nr) \  (THREAD_SELF = descr)/* 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#endif /* pt-machine.h */