/*
 * kmp_platform.h -- header for determining operating system and architecture
 */

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.txt for details.
//
//===----------------------------------------------------------------------===//

#ifndef KMP_PLATFORM_H
#define KMP_PLATFORM_H

/* ---------------------- Operating system recognition ------------------- */

#define KMP_OS_LINUX    0
#define KMP_OS_FREEBSD  0
#define KMP_OS_DARWIN   0
#define KMP_OS_WINDOWS  0
#define KMP_OS_CNK      0
#define KMP_OS_UNIX     0  /* disjunction of KMP_OS_LINUX, KMP_OS_DARWIN etc. */


#ifdef _WIN32
# undef KMP_OS_WINDOWS
# define KMP_OS_WINDOWS 1
#endif

#if ( defined __APPLE__ && defined __MACH__ )
# undef KMP_OS_DARWIN
# define KMP_OS_DARWIN 1
#endif

// in some ppc64 linux installations, only the second condition is met
#if ( defined __linux )
# undef KMP_OS_LINUX
# define KMP_OS_LINUX 1
#elif ( defined __linux__)
# undef KMP_OS_LINUX
# define KMP_OS_LINUX 1
#else
#endif

#if ( defined __FreeBSD__ )
# undef KMP_OS_FREEBSD
# define KMP_OS_FREEBSD 1
#endif

#if ( defined __bgq__ )
# undef KMP_OS_CNK
# define KMP_OS_CNK 1
#endif

#if (1 != KMP_OS_LINUX + KMP_OS_FREEBSD + KMP_OS_DARWIN + KMP_OS_WINDOWS)
# error Unknown OS
#endif

#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_DARWIN
# undef KMP_OS_UNIX
# define KMP_OS_UNIX 1
#endif

/* ---------------------- Architecture recognition ------------------- */

#define KMP_ARCH_X86        0
#define KMP_ARCH_X86_64     0
#define KMP_ARCH_AARCH64    0
#define KMP_ARCH_PPC64_BE   0
#define KMP_ARCH_PPC64_LE   0
#define KMP_ARCH_PPC64 (KMP_ARCH_PPC64_LE || KMP_ARCH_PPC64_BE)

#if KMP_OS_WINDOWS
# if defined _M_AMD64
#  undef KMP_ARCH_X86_64
#  define KMP_ARCH_X86_64 1
# else
#  undef KMP_ARCH_X86
#  define KMP_ARCH_X86 1
# endif
#endif

#if KMP_OS_UNIX
# if defined __x86_64
#  undef KMP_ARCH_X86_64
#  define KMP_ARCH_X86_64 1
# elif defined __i386
#  undef KMP_ARCH_X86
#  define KMP_ARCH_X86 1
# elif defined __powerpc64__
#  if defined __LITTLE_ENDIAN__
#   undef KMP_ARCH_PPC64_LE
#   define KMP_ARCH_PPC64_LE 1
#  else
#   undef KMP_ARCH_PPC64_BE
#   define KMP_ARCH_PPC64_BE 1
#  endif
# elif defined __aarch64__
#  undef KMP_ARCH_AARCH64
#  define KMP_ARCH_AARCH64 1
# endif
#endif

#if defined(__ARM_ARCH_7__)   || defined(__ARM_ARCH_7R__)  || \
    defined(__ARM_ARCH_7A__)
# define KMP_ARCH_ARMV7 1
#endif

#if defined(KMP_ARCH_ARMV7)   || defined(__ARM_ARCH_6__)   || \
    defined(__ARM_ARCH_6J__)  || defined(__ARM_ARCH_6K__)  || \
    defined(__ARM_ARCH_6Z__)  || defined(__ARM_ARCH_6T2__) || \
    defined(__ARM_ARCH_6ZK__)
# define KMP_ARCH_ARMV6 1
#endif

#if defined(KMP_ARCH_ARMV6)   || defined(__ARM_ARCH_5T__)  || \
    defined(__ARM_ARCH_5E__)  || defined(__ARM_ARCH_5TE__) || \
    defined(__ARM_ARCH_5TEJ__)
# define KMP_ARCH_ARMV5 1
#endif

#if defined(KMP_ARCH_ARMV5)   || defined(__ARM_ARCH_4__)   || \
    defined(__ARM_ARCH_4T__)
# define KMP_ARCH_ARMV4 1
#endif

#if defined(KMP_ARCH_ARMV4)   || defined(__ARM_ARCH_3__)   || \
    defined(__ARM_ARCH_3M__)
# define KMP_ARCH_ARMV3 1
#endif

#if defined(KMP_ARCH_ARMV3)   || defined(__ARM_ARCH_2__)
# define KMP_ARCH_ARMV2 1
#endif

#if defined(KMP_ARCH_ARMV2)
# define KMP_ARCH_ARM 1
#endif

// TODO: Fixme - This is clever, but really fugly
#if (1 != KMP_ARCH_X86 + KMP_ARCH_X86_64 + KMP_ARCH_ARM + KMP_ARCH_PPC64 + KMP_ARCH_AARCH64)
# error Unknown or unsupported architecture
#endif

#endif // KMP_PLATFORM_H