| /* |
| * This file is part of the flashrom project. |
| * |
| * Copyright (C) 2011 Carl-Daniel Hailfinger |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program 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 General Public License for more details. |
| */ |
| |
| /* |
| * Header file to determine target OS and CPU architecture. |
| */ |
| |
| #ifndef __PLATFORM_H__ |
| #define __PLATFORM_H__ 1 |
| |
| // Helper defines for operating systems |
| #if defined(__gnu_linux__) || defined(__linux__) |
| #define IS_LINUX 1 |
| #else |
| #define IS_LINUX 0 |
| #endif |
| #if defined(__APPLE__) && defined(__MACH__) /* yes, both. */ |
| #define IS_MACOSX 1 |
| #else |
| #define IS_MACOSX 0 |
| #endif |
| #if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__) |
| #define IS_WINDOWS 1 |
| #else |
| #define IS_WINDOWS 0 |
| #endif |
| |
| // Likewise for target architectures |
| #if defined (__i386__) || defined (__x86_64__) || defined(__amd64__) |
| #define __FLASHROM_ARCH__ "x86" |
| #define IS_X86 1 |
| #elif defined (__mips) || defined (__mips__) || defined (__MIPS__) || defined (mips) |
| #define __FLASHROM_ARCH__ "mips" |
| #define IS_MIPS 1 |
| #elif defined(__powerpc) || defined(__powerpc__) || defined(__powerpc64__) || defined(__POWERPC__) || \ |
| defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || \ |
| defined(_ARCH_PPC64) || defined(__ppc) |
| #define __FLASHROM_ARCH__ "ppc" |
| #define IS_PPC 1 |
| #elif defined(__arm__) || defined(__TARGET_ARCH_ARM) || defined(_ARM) || defined(_M_ARM) || defined(__arm) || \ |
| defined(__aarch64__) |
| #define __FLASHROM_ARCH__ "arm" |
| #define IS_ARM 1 |
| #elif defined (__sparc__) || defined (__sparc) |
| #define __FLASHROM_ARCH__ "sparc" |
| #define IS_SPARC 1 |
| #elif defined (__alpha__) |
| #define __FLASHROM_ARCH__ "alpha" |
| #define IS_ALPHA 1 |
| #elif defined (__hppa__) || defined (__hppa) |
| #define __FLASHROM_ARCH__ "hppa" |
| #define IS_HPPA 1 |
| #elif defined (__m68k__) |
| #define __FLASHROM_ARCH__ "m68k" |
| #define IS_M68K 1 |
| #elif defined (__riscv) |
| #define __FLASHROM_ARCH__ "riscv" |
| #define IS_RISCV 1 |
| #elif defined (__sh__) |
| #define __FLASHROM_ARCH__ "sh" |
| #define IS_SH 1 |
| #elif defined(__s390__) || defined(__s390x__) || defined(__zarch__) |
| #define __FLASHROM_ARCH__ "s390" |
| #define IS_S390 1 |
| #elif defined(__arc__) |
| #define __FLASHROM_ARCH__ "arc" |
| #define IS_ARC 1 |
| #endif |
| |
| #if !(IS_X86 || IS_MIPS || IS_PPC || IS_ARM || IS_SPARC || IS_ALPHA || IS_HPPA || IS_M68K || IS_RISCV || IS_SH || IS_S390 || IS_ARC) |
| #error Unknown architecture |
| #endif |
| |
| /* The next big hunk tries to guess endianness from various preprocessor macros */ |
| /* First some error checking in case some weird header has defined both. |
| * NB: OpenBSD always defines _BIG_ENDIAN and _LITTLE_ENDIAN. */ |
| #if defined (__LITTLE_ENDIAN__) && defined (__BIG_ENDIAN__) |
| #error Conflicting endianness #define |
| #endif |
| |
| #if IS_X86 |
| |
| /* All x86 is little-endian. */ |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| |
| #elif IS_MIPS |
| |
| /* MIPS can be either endian. */ |
| #if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL) |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| #elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB) |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| #endif |
| |
| #elif IS_PPC |
| |
| /* PowerPC can be either endian. */ |
| #if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__) |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| #elif defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__) |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| #endif |
| |
| #elif IS_ARM |
| |
| /* ARM can be either endian. */ |
| #if defined (__ARMEB__) |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| #elif defined (__ARMEL__) |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| #endif |
| |
| #elif IS_SPARC |
| /* SPARC is big endian in general (but allows to access data in little endian too). */ |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| |
| #elif IS_ARC |
| #if defined(__BIG_ENDIAN__) |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| #else |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| #endif |
| |
| #endif /* IS_? */ |
| |
| #if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__) |
| |
| /* If architecture-specific approaches fail try generic variants. First: BSD (works about everywhere). */ |
| #if !IS_WINDOWS |
| #include <sys/param.h> |
| |
| #if defined (__BYTE_ORDER) |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| #define __FLASHROM_LITTLE_ENDIAN__ |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| #define __FLASHROM_BIG_ENDIAN__ |
| #else |
| #error Unknown byte order! |
| #endif |
| #endif /* defined __BYTE_ORDER */ |
| #endif /* !IS_WINDOWS */ |
| |
| #if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__) |
| |
| /* Nonstandard libc-specific macros for determining endianness. */ |
| /* musl provides an endian.h as well... but it can not be detected from within C. */ |
| #if defined(__GLIBC__) |
| #include <endian.h> |
| #if BYTE_ORDER == LITTLE_ENDIAN |
| #define __FLASHROM_LITTLE_ENDIAN__ 1 |
| #elif BYTE_ORDER == BIG_ENDIAN |
| #define __FLASHROM_BIG_ENDIAN__ 1 |
| #endif |
| #endif |
| #endif |
| |
| #endif |
| |
| #if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__) |
| #error Unable to determine endianness. |
| #endif |
| |
| #endif /* !__PLATFORM_H__ */ |
