1 /* $NetBSD: _libelf_config.h,v 1.7 2024/04/01 18:33:22 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2008-2011 Joseph Koshy 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * Id: _libelf_config.h 3975 2022-04-30 20:10:58Z jkoshy 29 */ 30 31 /* 32 * Downstream projects can replace the following placeholder with a custom 33 * definition of LIBELF_BYTEORDER, if the host's native byte order cannot 34 * be determined using the compilation environment. 35 */ 36 /* @LIBELF-DEFINE-HOST-BYTEORDER@ */ 37 38 #if !defined(LIBELF_BYTEORDER) 39 40 /* 41 * Use the __BYTE_ORDER__ and __ORDER_{LITTLE|BIG}_ENDIAN__ macros to 42 * determine the host's byte order. These macros are predefined by the 43 * GNU and CLANG C compilers. 44 */ 45 #if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) 46 47 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 48 #define LIBELF_BYTEORDER ELFDATA2LSB 49 #else 50 #define LIBELF_BYTEORDER ELFDATA2MSB 51 #endif 52 53 #else 54 55 #error unknown host byte order 56 57 #endif /* defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) */ 58 #endif /* !defined(LIBELF_BYTEORDER) */ 59