/* Machine-dependent pthreads configuration and inline functions.   Sparc v9 version.   Copyright (C) 1997, 1998, 1999 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/* Spinlock implementation; required.  */PT_EI inttestandset (int *spinlock){  int ret;  __asm__ __volatile__("ldstub %1,%0"	: "=r"(ret), "=m"(*spinlock) : "m"(*spinlock));  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");/* Registers %g6 and %g7 are reserved by the ABI for "system use".  It   happens that Solaris uses %g6 for the thread pointer -- we do the same.  */struct _pthread_descr_struct;register struct _pthread_descr_struct *__thread_self __asm__("%g6");/* Return the thread descriptor for the current thread.  */#define THREAD_SELF  __thread_self/* Initialize the thread-unique value.  */#define INIT_THREAD_SELF(descr, nr)  (__thread_self = (descr))/* Compare-and-swap for semaphores. */#define HAS_COMPARE_AND_SWAPPT_EI int__compare_and_swap (long int *p, long int oldval, long int newval){  long int readval;  __asm__ __volatile__ ("casx	[%4], %2, %0"			: "=r"(readval), "=m"(*p)			: "r"(oldval), "m"(*p), "r"(p), "0"(newval));  return readval == oldval;}/* 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)