platform.h

/*
 * clockperf
 *
 * Copyright (c) 2016-2021, Steven Noonan <steven@uplinklabs.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */

/* Clear all macros before continuing, in case another header (e.g.
 * TargetConditionals.h in macOS) decides to use the same macro names.
 */
#undef TARGET_BIG_ENDIAN
#undef TARGET_COMPILER_BORLAND
#undef TARGET_COMPILER_CLANG
#undef TARGET_COMPILER_CYGWIN
#undef TARGET_COMPILER_GCC
#undef TARGET_COMPILER_ICC
#undef TARGET_COMPILER_MINGW
#undef TARGET_COMPILER_VC
#undef TARGET_CPU_ALPHA
#undef TARGET_CPU_ARM
#undef TARGET_CPU_BITS
#undef TARGET_CPU_IA64
#undef TARGET_CPU_PPC
#undef TARGET_CPU_SPARC
#undef TARGET_CPU_X64
#undef TARGET_CPU_X86
#undef TARGET_CPU_X86_64
#undef TARGET_LITTLE_ENDIAN
#undef TARGET_OS_FREEBSD
#undef TARGET_OS_HAIKU
#undef TARGET_OS_LINUX
#undef TARGET_OS_MACOSX
#undef TARGET_OS_NETBSD
#undef TARGET_OS_OPENBSD
#undef TARGET_OS_WINDOWS


#undef PROCESSOR_DETECTED
#undef COMPILER_DETECTED
#undef OS_DETECTED

/* ------------------- *
* PROCESSOR DETECTION *
* ------------------- */

/* Carbon defines this for us on Mac, apparently... */
#if defined (TARGET_CPU_PPC)
#  define PROCESSOR_DETECTED
#endif

/* ARM */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__arm__) || defined (__AARCH64EL__) || defined(_M_ARM) || defined(_M_ARM64)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_ARM
#    define TARGET_LITTLE_ENDIAN
#  endif
#endif

/* DEC Alpha */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__alpha) || defined (__alpha__)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_ALPHA
#    define TARGET_LITTLE_ENDIAN /* How should bi-endianness be handled? */
#  endif
#endif

/* Sun SPARC */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__sparc) || defined (__sparc__)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_SPARC
#    define TARGET_BIG_ENDIAN
#  endif
#endif

/* PowerPC */
#if !defined (PROCESSOR_DETECTED)
#  if defined (_ARCH_PPC) || defined (__ppc__) || defined (__ppc64__) || defined (__PPC) || defined (powerpc) || \
    defined (__PPC__) || defined (__powerpc64__) || defined (__powerpc64)
#    define PROCESSOR_DETECTED
#    if defined (__ppc64__) || defined (__powerpc64__) || defined (__powerpc64)
#      define TARGET_CPU_PPC 64
#    else
#      define TARGET_CPU_PPC 32
#    endif
#    define TARGET_BIG_ENDIAN
#  endif
#endif

/* x86_64 or AMD64 or x64 */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__x86_64__) || defined (__x86_64) || defined (__amd64) || defined (__amd64__) || defined (_AMD64_) || \
    defined (_M_X64)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_X64
#    define TARGET_CPU_X86_64
#    define TARGET_LITTLE_ENDIAN
#  endif
#endif

/* Intel x86 */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__i386__) || defined (__i386) || defined (i386) || defined (_X86_) || defined (_M_IX86)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_X86
#    define TARGET_LITTLE_ENDIAN
#  endif
#endif

/* IA64 */
#if !defined (PROCESSOR_DETECTED)
#  if defined (__ia64__) || defined (_IA64) || defined (__ia64) || defined (_M_IA64)
#    define PROCESSOR_DETECTED
#    define TARGET_CPU_IA64
#    define TARGET_LITTLE_ENDIAN
#  endif
#endif

/* ------------------- *
* COMPILER DETECTION  *
* ------------------- */

#if !defined (COMPILER_DETECTED)
#  if defined (__GNUC__)
#    define COMPILER_DETECTED
#    define TARGET_COMPILER_GCC
#  endif
#  if defined (__CYGWIN__) || defined (__CYGWIN32__)
#    define TARGET_COMPILER_CYGWIN
#    define TARGET_OS_WINDOWS
#    define OS_DETECTED
#  endif
#  if defined (__MINGW32__)
#    define TARGET_COMPILER_MINGW
#  endif
#endif

#if !defined (COMPILER_DETECTED)
#  if defined (__INTEL_COMPILER) || defined (__ICL)
#    define COMPILER_DETECTED
#    define TARGET_COMPILER_ICC
#  endif
#endif

#if !defined (COMPILER_DETECTED)
#  if defined (_MSC_VER)
#    define COMPILER_DETECTED
#    define TARGET_COMPILER_MSVC
#  endif
#endif

#if !defined (COMPILER_DETECTED)
#  if defined (__BORLANDC__)
#    define COMPILER_DETECTED
#    define TARGET_COMPILER_BORLAND
#  endif
#endif

/* ------------ *
* OS DETECTION *
* ------------ */

#if !defined (OS_DETECTED)
#  if defined (TARGET_COMPILER_MSVC) || defined (_WIN32) || defined (_WIN64)
#    define OS_DETECTED
#    define TARGET_OS_WINDOWS
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__linux__) || defined (linux) || defined (__linux) || defined (__gnu_linux__) || defined (__CYGWIN__)
#    define OS_DETECTED
#    define TARGET_OS_LINUX
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__HAIKU__)
#    define OS_DETECTED
#    define TARGET_OS_HAIKU
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__FreeBSD__)
#    define OS_DETECTED
#    define TARGET_OS_FREEBSD
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__NetBSD__)
#    define OS_DETECTED
#    define TARGET_OS_NETBSD
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__OpenBSD__)
#    define OS_DETECTED
#    define TARGET_OS_OPENBSD
#  endif
#endif

#if !defined (OS_DETECTED)
#  if defined (__APPLE__) || defined (__MACH__)
#    define OS_DETECTED
#    define TARGET_OS_MACOSX
#  endif
#endif

#if defined (_LP64) || defined (__LP64__) || defined (_M_X64) || defined(_M_IA64) || defined(__aarch64__) || defined(_M_ARM64)
#  define TARGET_CPU_BITS 64
#else
#  define TARGET_CPU_BITS 32
#endif

#if defined (TARGET_CPU_PPC)
#  if TARGET_CPU_PPC == 32
#    define TARGET_CPU_BITS 32
#  elif TARGET_CPU_PPC == 64
#    define TARGET_CPU_BITS 64
#  endif
#endif

#if !defined (TARGET_CPU_BITS)
#  define TARGET_CPU_BITS 0
#endif

#if !defined (PROCESSOR_DETECTED)
#error "Could not detect target CPU."
#endif

#if !defined (COMPILER_DETECTED)
#error "Could not detect target compiler."
#endif

#if !defined (OS_DETECTED)
#error "Could not detect target OS."
#endif

#if !defined (TARGET_CPU_BITS)
#error "Could not detect 32-bit/64-bit architecture."
#endif

/* vim: set ts=4 sts=4 sw=4 et: */