libatomic/config/arm/arm-config.h

   1 /* Copyright (C) 2012-2015 Free Software Foundation, Inc.
   2    Contributed by Richard Henderson <rth@redhat.com>.
   3
   4    This file is part of the GNU Atomic Library (libatomic).
   5
   6    Libatomic is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    Libatomic is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14    more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25
  26 #if defined(__ARM_ARCH_2__)
  27 # define __ARM_ARCH__ 2
  28 #endif
  29
  30 #if defined(__ARM_ARCH_3__)
  31 # define __ARM_ARCH__ 3
  32 #endif
  33
  34 #if defined(__ARM_ARCH_3M__) || defined(__ARM_ARCH_4__) \
  35         || defined(__ARM_ARCH_4T__)
  36 /* We use __ARM_ARCH__ set to 4 here, but in reality it's any processor with
  37    long multiply instructions.  That includes v3M.  */
  38 # define __ARM_ARCH__ 4
  39 #endif
  40
  41 #if defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5T__) \
  42         || defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) \
  43         || defined(__ARM_ARCH_5TEJ__)
  44 # define __ARM_ARCH__ 5
  45 #endif
  46
  47 #if defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
  48         || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) \
  49         || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) \
  50         || defined(__ARM_ARCH_6M__)
  51 # define __ARM_ARCH__ 6
  52 #endif
  53
  54 #if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
  55         || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
  56         || defined(__ARM_ARCH_7EM__)
  57 # define __ARM_ARCH__ 7
  58 #endif
  59
  60 #if defined(__ARM_ARCH_8A__)
  61 # define __ARM_ARCH__ 8
  62 #endif
  63
  64 #ifndef __ARM_ARCH__
  65 #error Unable to determine architecture.
  66 #endif
  67
  68 #if __ARM_ARCH__ >= 7 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
  69 # define HAVE_STREX     1
  70 # define HAVE_STREXBHD  1
  71 #elif __ARM_ARCH__ == 6
  72 # define HAVE_STREX     1
  73 #endif
  74
  75 #if __ARM_ARCH__ >= 7
  76 # define HAVE_DMB       1
  77 #elif __ARM_ARCH__ == 6
  78 # define HAVE_DMB_MCR   1
  79 #endif