bsnes/higan/nall/intrinsics.hpp

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#ifndef NALL_INTRINSICS_HPP
#define NALL_INTRINSICS_HPP
struct Intrinsics {
enum class Compiler : unsigned { GCC, VisualC, Unknown };
enum class Platform : unsigned { X, OSX, Windows, Unknown };
enum class Endian : unsigned { LSB, MSB, Unknown };
static inline Compiler compiler();
static inline Platform platform();
static inline Endian endian();
};
/* Compiler detection */
#if defined(__GNUC__)
#define COMPILER_GCC
Intrinsics::Compiler Intrinsics::compiler() { return Intrinsics::Compiler::GCC; }
#elif defined(_MSC_VER)
#define COMPILER_VISUALC
Intrinsics::Compiler Intrinsics::compiler() { return Intrinsics::Compiler::VisualC; }
#else
#warning "unable to detect compiler"
#define COMPILER_UNKNOWN
Intrinsics::Compiler Intrinsics::compiler() { return Intrinsics::Compiler::Unknown; }
#endif
/* Platform detection */
#if defined(linux) || defined(__sun__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
#define PLATFORM_X
Intrinsics::Platform Intrinsics::platform() { return Intrinsics::Platform::X; }
#elif defined(__APPLE__)
#define PLATFORM_OSX
Intrinsics::Platform Intrinsics::platform() { return Intrinsics::Platform::OSX; }
#elif defined(_WIN32)
#define PLATFORM_WINDOWS
#define PLATFORM_WIN
Intrinsics::Platform Intrinsics::platform() { return Intrinsics::Platform::Windows; }
#else
#warning "unable to detect platform"
#define PLATFORM_UNKNOWN
Intrinsics::Platform Intrinsics::platform() { return Intrinsics::Platform::Unknown; }
#endif
/* Endian detection */
#if defined(__i386__) || defined(__amd64__) || defined(_M_IX86) || defined(_M_AMD64)
#define ENDIAN_LSB
#define ARCH_LSB
Intrinsics::Endian Intrinsics::endian() { return Intrinsics::Endian::LSB; }
#elif defined(__powerpc__) || defined(_M_PPC) || defined(__BIG_ENDIAN__)
#define ENDIAN_MSB
#define ARCH_MSB
Intrinsics::Endian Intrinsics::endian() { return Intrinsics::Endian::MSB; }
#else
#warning "unable to detect endian"
#define ENDIAN_UNKNOWN
#define ARCH_UNKNOWN
Intrinsics::Endian Intrinsics::endian() { return Intrinsics::Endian::Unknown; }
#endif
#endif