bsnes/nall/intrinsics.hpp

236 lines
8.6 KiB
C++
Executable File

#pragma once
namespace nall {
using uint = unsigned;
enum class Compiler : uint { Clang, GCC, Microsoft, Unknown };
enum class Platform : uint { Windows, MacOS, Linux, BSD, Haiku, Android, Unknown };
enum class API : uint { Windows, Posix, Unknown };
enum class DisplayServer : uint { Windows, Quartz, Xorg, Unknown };
enum class Architecture : uint { x86, amd64, ARM32, ARM64, PPC32, PPC64, Unknown };
enum class Endian : uint { LSB, MSB, Unknown };
enum class Build : uint { Debug, Stable, Size, Release, Performance };
static inline constexpr auto compiler() -> Compiler;
static inline constexpr auto platform() -> Platform;
static inline constexpr auto api() -> API;
static inline constexpr auto display() -> DisplayServer;
static inline constexpr auto architecture() -> Architecture;
static inline constexpr auto endian() -> Endian;
static inline constexpr auto build() -> Build;
}
/* Compiler detection */
namespace nall {
#if defined(__clang__)
#define COMPILER_CLANG
constexpr auto compiler() -> Compiler { return Compiler::Clang; }
#pragma clang diagnostic warning "-Wreturn-type"
#pragma clang diagnostic ignored "-Wunused-result"
#pragma clang diagnostic ignored "-Wunknown-pragmas"
#pragma clang diagnostic ignored "-Wempty-body"
#pragma clang diagnostic ignored "-Wparentheses"
#pragma clang diagnostic ignored "-Wswitch"
#pragma clang diagnostic ignored "-Wswitch-bool"
#pragma clang diagnostic ignored "-Wtautological-compare"
#pragma clang diagnostic ignored "-Wabsolute-value"
#pragma clang diagnostic ignored "-Wshift-count-overflow"
#pragma clang diagnostic ignored "-Wtrigraphs"
//temporary
#pragma clang diagnostic ignored "-Winconsistent-missing-override"
//#pragma clang diagnostic error "-Wdeprecated-declarations"
#elif defined(__GNUC__)
#define COMPILER_GCC
constexpr auto compiler() -> Compiler { return Compiler::GCC; }
#pragma GCC diagnostic warning "-Wreturn-type"
#pragma GCC diagnostic ignored "-Wunused-result"
#pragma GCC diagnostic ignored "-Wunknown-pragmas"
#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wswitch-bool"
#pragma GCC diagnostic ignored "-Wtrigraphs"
#elif defined(_MSC_VER)
#define COMPILER_MICROSOFT
constexpr auto compiler() -> Compiler { return Compiler::Microsoft; }
#pragma warning(disable:4996) //libc "deprecation" warnings
#else
#warning "unable to detect compiler"
#define COMPILER_UNKNOWN
constexpr auto compiler() -> Compiler { return Compiler::Unknown; }
#endif
}
/* Platform detection */
namespace nall {
#if defined(_WIN32)
#define PLATFORM_WINDOWS
#define API_WINDOWS
#define DISPLAY_WINDOWS
constexpr auto platform() -> Platform { return Platform::Windows; }
constexpr auto api() -> API { return API::Windows; }
constexpr auto display() -> DisplayServer { return DisplayServer::Windows; }
#elif defined(__APPLE__)
#define PLATFORM_MACOS
#define API_POSIX
#define DISPLAY_QUARTZ
constexpr auto platform() -> Platform { return Platform::MacOS; }
constexpr auto api() -> API { return API::Posix; }
constexpr auto display() -> DisplayServer { return DisplayServer::Quartz; }
#elif defined(__ANDROID__)
#define PLATFORM_ANDROID
#define API_POSIX
#define DISPLAY_UNKNOWN
constexpr auto platform() -> Platform { return Platform::Android; }
constexpr auto api() -> API { return API::Posix; }
constexpr auto display() -> DisplayServer { return DisplayServer::Unknown; }
#elif defined(linux) || defined(__linux__)
#define PLATFORM_LINUX
#define API_POSIX
#define DISPLAY_XORG
constexpr auto platform() -> Platform { return Platform::Linux; }
constexpr auto api() -> API { return API::Posix; }
constexpr auto display() -> DisplayServer { return DisplayServer::Xorg; }
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined (__DragonFly__)
#define PLATFORM_BSD
#define API_POSIX
#define DISPLAY_XORG
constexpr auto platform() -> Platform { return Platform::BSD; }
constexpr auto api() -> API { return API::Posix; }
constexpr auto display() -> DisplayServer { return DisplayServer::Xorg; }
#elif defined(__HAIKU__)
#define PLATFORM_HAIKU
#define API_POSIX
#define DISPLAY_UNKNOWN
constexpr auto platform() -> Platform { return Platform::Haiku; }
constexpr auto api() -> API { return API::Posix; }
constexpr auto display() -> DisplayServer { return DisplayServer::Unknown; }
#else
#warning "unable to detect platform"
#define PLATFORM_UNKNOWN
#define API_UNKNOWN
#define DISPLAY_UNKNOWN
constexpr auto platform() -> Platform { return Platform::Unknown; }
constexpr auto api() -> API { return API::Unknown; }
constexpr auto display() -> DisplayServer { return DisplayServer::Unknown; }
#endif
}
/* Architecture detection */
namespace nall {
#if defined(__i386__) || defined(_M_IX86)
#define ARCHITECTURE_X86
constexpr auto architecture() -> Architecture { return Architecture::x86; }
#elif defined(__amd64__) || defined(_M_AMD64)
#define ARCHITECTURE_AMD64
constexpr auto architecture() -> Architecture { return Architecture::amd64; }
#elif defined(__aarch64__)
#define ARCHITECTURE_ARM64
constexpr auto architecture() -> Architecture { return Architecture::ARM64; }
#elif defined(__arm__)
#define ARCHITECTURE_ARM32
constexpr auto architecture() -> Architecture { return Architecture::ARM32; }
#elif defined(__ppc64__) || defined(_ARCH_PPC64)
#define ARCHITECTURE_PPC64
constexpr auto architecture() -> Architecture { return Architecture::PPC64; }
#elif defined(__ppc__) || defined(_ARCH_PPC) || defined(_M_PPC)
#define ARCHITECTURE_PPC32
constexpr auto architecture() -> Architecture { return Architecture::PPC32; }
#else
#warning "unable to detect architecture"
#define ARCHITECTURE_UNKNOWN
constexpr auto architecture() -> Architecture { return Architecture::Unknown; }
#endif
}
/* Endian detection */
#if defined(PLATFORM_MACOS)
#include <machine/endian.h>
#elif defined(PLATFORM_LINUX)
#include <endian.h>
#elif defined(PLATFORM_BSD)
#include <sys/endian.h>
#endif
namespace nall {
// A note on endian constants: Traditional UNIX provides a header that defines
// constants LITTLE_ENDIAN, BIG_ENDIAN, and BYTE_ORDER (set to LITTLE_ENDIAN or
// BIG_ENDIAN as appropriate). However, C89 says that the compiler/libc should
// not introduce any names unless they start with an underscore, so when you're
// compiling in standards-compilant mode, those constants are named
// __LITTLE_ENDIAN, or sometimes _LITTLE_ENDIAN, or sometimes even LITTLE_ENDIAN
// on platforms that care more about tradition than standards. The platforms
// that rename the constants usually provide some other name you can #define to
// say, "forget C89, yes I really want traditional constant names", but *that*
// name also differs from platform to platform, and it affects more than just
// the endian header.
//
// Rather than wade into that mess, let's just test for all the constants we
// know about.
#if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN) \
|| (defined( _BYTE_ORDER) && defined( _LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN) \
|| (defined( BYTE_ORDER) && defined( LITTLE_ENDIAN) && BYTE_ORDER == LITTLE_ENDIAN) \
|| defined(__LITTLE_ENDIAN__) \
|| defined(__i386__) || defined(__amd64__) \
|| defined(_M_IX86) || defined(_M_AMD64)
#define ENDIAN_LSB
constexpr auto endian() -> Endian { return Endian::LSB; }
#elif(defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN) \
|| (defined( _BYTE_ORDER) && defined( _BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN) \
|| (defined( BYTE_ORDER) && defined( BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN) \
|| defined(__BIG_ENDIAN__) \
|| defined(__powerpc__) || defined(_M_PPC)
#define ENDIAN_MSB
constexpr auto endian() -> Endian { return Endian::MSB; }
#else
#warning "unable to detect endian"
#define ENDIAN_UNKNOWN
constexpr auto endian() -> Endian { return Endian::Unknown; }
#endif
}
/* Build optimization level detection */
#undef DEBUG
#undef NDEBUG
namespace nall {
#if defined(BUILD_DEBUG)
#define DEBUG
constexpr auto build() -> Build { return Build::Debug; }
#elif defined(BUILD_STABLE)
#define DEBUG
constexpr auto build() -> Build { return Build::Stable; }
#elif defined(BUILD_SIZE)
#define NDEBUG
constexpr auto build() -> Build { return Build::Size; }
#elif defined(BUILD_RELEASE)
#define NDEBUG
constexpr auto build() -> Build { return Build::Release; }
#elif defined(BUILD_PERFORMANCE)
#define NDEBUG
constexpr auto build() -> Build { return Build::Performance; }
#else
//default to debug mode
#define DEBUG
constexpr auto build() -> Build { return Build::Debug; }
#endif
}