/* Macros to test for CPU features on ARM.  Generic ARM version.

   Copyright (C) 2012-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library.  If not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _ARM_ARM_FEATURES_H

#define _ARM_ARM_FEATURES_H 1

/* An OS-specific arm-features.h file should define ARM_HAVE_VFP to

   an appropriate expression for testing at runtime whether the VFP

   hardware is present.  We'll then redefine it to a constant if we

   know at compile time that we can assume VFP.  */

#ifndef __SOFTFP__

/* The compiler is generating VFP instructions, so we're already

   assuming the hardware exists.  */

# undef ARM_HAVE_VFP

# define ARM_HAVE_VFP	1

#endif

/* An OS-specific arm-features.h file may define ARM_ASSUME_NO_IWMMXT

   to indicate at compile time that iWMMXt hardware is never present

   at runtime (or that we never care about its state) and so need not

   be checked for.  */

/* A more-specific arm-features.h file may define ARM_ALWAYS_BX to indicate

   that instructions using pc as a destination register must never be used,

   so a "bx" (or "blx") instruction is always required.  */

/* The log2 of the minimum alignment required for an address that

   is the target of a computed branch (i.e. a "bx" instruction).

   A more-specific arm-features.h file may define this to set a more

   stringent requirement.

   Using this only makes sense for code in ARM mode (where instructions

   always have a fixed size of four bytes), or for Thumb-mode code that is

   specifically aligning all the related branch targets to match (since

   Thumb instructions might be either two or four bytes).  */

#ifndef ARM_BX_ALIGN_LOG2

# define ARM_BX_ALIGN_LOG2	2

#endif

/* An OS-specific arm-features.h file may define ARM_NO_INDEX_REGISTER to

   indicate that the two-register addressing modes must never be used.  */

#endif  /* arm-features.h */