libatomic/config/arm/arm-config.h

/* Copyright (C) 2012-2015 Free Software Foundation, Inc.
   Contributed by Richard Henderson <rth@redhat.com>.

   This file is part of the GNU Atomic Library (libatomic).

   Libatomic is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   Libatomic 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 General Public License for
   more details.

   Under Section 7 of GPL version 3, you are granted additional
   permissions described in the GCC Runtime Library Exception, version
   3.1, as published by the Free Software Foundation.

   You should have received a copy of the GNU General Public License and
   a copy of the GCC Runtime Library Exception along with this program;
   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   <http://www.gnu.org/licenses/>.  */


#if defined(__ARM_ARCH_2__)
# define __ARM_ARCH__ 2
#endif

#if defined(__ARM_ARCH_3__)
# define __ARM_ARCH__ 3
#endif

#if defined(__ARM_ARCH_3M__) || defined(__ARM_ARCH_4__) \
	|| defined(__ARM_ARCH_4T__)
/* We use __ARM_ARCH__ set to 4 here, but in reality it's any processor with
   long multiply instructions.  That includes v3M.  */
# define __ARM_ARCH__ 4
#endif
	
#if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
	|| defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
	|| defined(__ARM_ARCH_5TEJ__)
# define __ARM_ARCH__ 5
#endif

#if defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
	|| defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
	|| defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
	|| defined(__ARM_ARCH_6M__)
# define __ARM_ARCH__ 6
#endif

#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
	|| defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
	|| defined(__ARM_ARCH_7EM__)
# define __ARM_ARCH__ 7
#endif

#if defined(__ARM_ARCH_8A__)
# define __ARM_ARCH__ 8
#endif

#ifndef __ARM_ARCH__
#error Unable to determine architecture.
#endif

#if __ARM_ARCH__ >= 7 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
# define HAVE_STREX	1
# define HAVE_STREXBHD	1
#elif __ARM_ARCH__ == 6
# define HAVE_STREX	1
#endif

#if __ARM_ARCH__ >= 7
# define HAVE_DMB	1
#elif __ARM_ARCH__ == 6
# define HAVE_DMB_MCR	1
#endif