1 /* Copyright (C) 2012-2013 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 80