sysdeps/arm/nacl/arm-features.h

   1 /* Macros to test for CPU features on ARM.  NaCl version.
   2    Copyright (C) 2015-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _NACL_ARM_FEATURES_H
  20 #define _NACL_ARM_FEATURES_H 1
  21
  22 #ifdef __SOFTFP__
  23 # error NaCl should always have VFP enabled
  24 #endif
  25
  26 /* NaCl does not support iWMMXt at all.  */
  27 #define ARM_ASSUME_NO_IWMMXT    1
  28
  29 /* NaCl does not allow instructions to target the pc register.  */
  30 #define ARM_ALWAYS_BX           1
  31
  32 /* Computed branch targets must be bundle-aligned, which is to 16 bytes.  */
  33 #define ARM_BX_ALIGN_LOG2       4
  34
  35 /* Two-register addressing modes are never allowed.  */
  36 #define ARM_NO_INDEX_REGISTER   1
  37
  38 /* Only ARM mode code is allowed, never Thumb mode.  */
  39 #define NO_THUMB
  40
  41 #include_next <arm-features.h>
  42
  43 #endif  /* arm-features.h */