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ba1c5eb125
Copy the test code for endian detection in an extra directory to split it from the main flashrom code. Change-Id: I0c2420fd60d7d6a23c94c9962b06bfd7f3c86ad8 Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.de> Reviewed-on: https://review.coreboot.org/c/flashrom/+/58270 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2011 Carl-Daniel Hailfinger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* This file determinate the target endian. It should only be used my the Makefile
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*/
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#if defined (__i386__) || defined (__x86_64__) || defined(__amd64__)
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/* All x86 is little-endian. */
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#elif defined (__mips) || defined (__mips__) || defined (__MIPS__) || defined (mips)
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/* MIPS can be either endian. */
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#if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL)
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB)
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#define __FLASHROM_BIG_ENDIAN__ 1
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#endif
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#elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__) || defined(__POWERPC__) || \
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defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || \
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defined(_ARCH_PPC64) || defined(__ppc)
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/* PowerPC can be either endian. */
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#if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__)
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#define __FLASHROM_BIG_ENDIAN__ 1
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#elif defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__)
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#endif
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#elif defined(__arm__) || defined(__TARGET_ARCH_ARM) || defined(_ARM) || defined(_M_ARM) || defined(__arm) || \
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defined(__aarch64__)
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/* ARM can be either endian. */
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#if defined (__ARMEB__) || defined (__BIG_ENDIAN__)
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#define __FLASHROM_BIG_ENDIAN__ 1
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#elif defined (__ARMEL__) || defined (__LITTLE_ENDIAN__)
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#endif
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#elif defined (__sparc__) || defined (__sparc)
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/* SPARC is big endian in general (but allows to access data in little endian too). */
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#define __FLASHROM_BIG_ENDIAN__ 1
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#elif defined(__arc__)
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#if defined(__BIG_ENDIAN__)
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#define __FLASHROM_BIG_ENDIAN__ 1
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#else
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#endif
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#endif
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#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
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/* If architecture-specific approaches fail try generic variants. First: BSD (works about everywhere). */
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#if !(defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__))
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#include <sys/param.h>
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#if defined (__BYTE_ORDER)
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define __FLASHROM_LITTLE_ENDIAN__
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define __FLASHROM_BIG_ENDIAN__
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#else
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#error Unknown byte order!
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#endif
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#endif /* defined __BYTE_ORDER */
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#endif /* !IS_WINDOWS */
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#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
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/* Nonstandard libc-specific macros for determining endianness. */
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/* musl provides an endian.h as well... but it can not be detected from within C. */
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#if defined(__GLIBC__)
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#include <endian.h>
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#if BYTE_ORDER == LITTLE_ENDIAN
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#define __FLASHROM_LITTLE_ENDIAN__ 1
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#elif BYTE_ORDER == BIG_ENDIAN
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#define __FLASHROM_BIG_ENDIAN__ 1
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#endif
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#endif
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#endif
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#endif
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#if defined(__FLASHROM_LITTLE_ENDIAN__)
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"little"
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#else
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"big"
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#endif
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