/* Machine-dependent pthreads configuration and inline functions.   SuperH version.   Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Niibe Yutaka <gniibe@m17n.org>.   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#endifextern long int testandset (int *spinlock);extern int __compare_and_swap (long int *p, long int oldval, long int newval);/* Spinlock implementation; required.  */PT_EI long inttestandset (int *spinlock){  int ret;  __asm__ __volatile__(       "tas.b	@%1\n\t"       "movt	%0"       : "=r" (ret)       : "r" (spinlock)       : "memory", "cc");  return (ret == 0);}/* We want the OS to assign stack addresses.  */#define FLOATING_STACKS 1/* Maximum size of the stack if the rlimit is unlimited.  */#define ARCH_STACK_MAX_SIZE     32*1024*1024/* 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__ ("r15");/* Return the thread descriptor for the current thread.  */struct _pthread_descr_struct;#define THREAD_SELF \  ({ struct _pthread_descr_struct *self; \      __asm__("stc gbr,%0" : "=r" (self)); self;})/* Initialize the thread-unique value.  */#define INIT_THREAD_SELF(descr, nr) \  ({ __asm__ __volatile__("ldc %0,gbr" : : "r" (descr));})/* Access to data in the thread descriptor is easy.  */#define THREAD_GETMEM(descr, member) THREAD_SELF->member#define THREAD_GETMEM_NC(descr, member) THREAD_SELF->member#define THREAD_SETMEM(descr, member, value) THREAD_SELF->member = (value)#define THREAD_SETMEM_NC(descr, member, value) THREAD_SELF->member = (value)#endif /* __ASSEMBLER__ */#endif /* pt-machine.h */