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      1 /* $NetBSD: features.c,v 1.3 2020/10/11 16:22:02 skrll Exp $ */
      2 /*-
      3  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Matt Thomas of 3am Software Foundry.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 /*
     32  * This file is used to have the compiler check for feature and then
     33  * have make set a variable based on that test.
     34  *
     35  * FEAT_EABI!=if ${COMPILE.c} -fsyntax-only -DEABI_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
     36  * FEAT_LDREX!=if ${COMPILE.c} -fsyntax-only -DLDREX_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
     37  * FEAT_LDRD!=if ${COMPILE.c} -fsyntax-only -DLDRD_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
     38  * FEAT_THUMB2!=if ${COMPILE.c} -fsyntax-only -DTHUMB2_TEST ${TESTFILE} >/dev/null 2>/dev/null; then echo yes; else echo no; fi
     39  */
     40 
     41 #if defined(__ARM_ARCH_8A) || defined (__ARM_ARCH_8A__)  || \
     42     defined (__ARM_ARCH_7__) || \
     43     defined (__ARM_ARCH_7A__)  || defined (__ARM_ARCH_7R__) || \
     44     defined (__ARM_ARCH_7M__)  || defined (__ARM_ARCH_7EM__) || \
     45     defined (__ARM_ARCH_6T2__)
     46 #define HAVE_THUMB2
     47 #endif
     48 
     49 #if defined (HAVE_THUMB2) || defined (__ARM_ARCH_6__) || \
     50     defined (__ARM_ARCH_6J__)  || defined (__ARM_ARCH_6K__) || \
     51     defined (__ARM_ARCH_6Z__)  || defined (__ARM_ARCH_6ZK__) || \
     52     defined (__ARM_ARCH_6KZ__) || defined (__ARM_ARCH_6ZM__)
     53 #define HAVE_LDREX
     54 #endif
     55 
     56 #if defined (HAVE_LDREX) || defined(__ARM_ARCH_5TE__) || \
     57     defined (__ARM_ARCH_5TEJ__)
     58 #define HAVE_LDRD
     59 #endif
     60 
     61 #if defined(THUMB2_TEST) && !defined(HAVE_THUMB2)
     62 #error no thumb2
     63 #endif
     64 
     65 #if defined(LDREX_TEST) && !defined(HAVE_LDREX)
     66 #error no ldrex
     67 #endif
     68 
     69 #if defined(LDRD_TEST) && !defined(HAVE_LDRD)
     70 #error no ldrd
     71 #endif
     72 
     73 #if defined(EABI_TEST) && !defined(__ARM_EABI__)
     74 #error not eabi
     75 #endif
     76