/* $NetBSD: features.c,v 1.3 2020/10/11 16:22:02 skrll Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* This file is used to have the compiler check for feature and then
* have make set a variable based on that test.
*
* FEAT_EABI!=if ${COMPILE.c} -fsyntax-only -DEABI_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
* FEAT_LDREX!=if ${COMPILE.c} -fsyntax-only -DLDREX_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
* FEAT_LDRD!=if ${COMPILE.c} -fsyntax-only -DLDRD_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
* FEAT_THUMB2!=if ${COMPILE.c} -fsyntax-only -DTHUMB2_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
*/

#if defined(__ARM_ARCH_8A) || defined (__ARM_ARCH_8A__)  || \
   defined (__ARM_ARCH_7__) || \
   defined (__ARM_ARCH_7A__)  || defined (__ARM_ARCH_7R__) || \
   defined (__ARM_ARCH_7M__)  || defined (__ARM_ARCH_7EM__) || \
   defined (__ARM_ARCH_6T2__)
#define HAVE_THUMB2
#endif

#if defined (HAVE_THUMB2) || defined (__ARM_ARCH_6__) || \
   defined (__ARM_ARCH_6J__)  || defined (__ARM_ARCH_6K__) || \
   defined (__ARM_ARCH_6Z__)  || defined (__ARM_ARCH_6ZK__) || \
   defined (__ARM_ARCH_6KZ__) || defined (__ARM_ARCH_6ZM__)
#define HAVE_LDREX
#endif

#if defined (HAVE_LDREX) || defined(__ARM_ARCH_5TE__) || \
   defined (__ARM_ARCH_5TEJ__)
#define HAVE_LDRD
#endif

#if defined(THUMB2_TEST) && !defined(HAVE_THUMB2)
#error no thumb2
#endif

#if defined(LDREX_TEST) && !defined(HAVE_LDREX)
#error no ldrex
#endif

#if defined(LDRD_TEST) && !defined(HAVE_LDRD)
#error no ldrd
#endif

#if defined(EABI_TEST) && !defined(__ARM_EABI__)
#error not eabi
#endif

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