147 lines
3.4 KiB
C++
147 lines
3.4 KiB
C++
/* Platform specific definitions for OctaSTD.
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*
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* This file is part of OctaSTD. See COPYING.md for futher information.
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*/
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#ifndef OSTD_PLATFORM_HH
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#define OSTD_PLATFORM_HH
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#include <stdlib.h>
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#include <stdint.h>
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#if defined(WIN32) || defined(_WIN32) || (defined(__WIN32) && !defined(__CYGWIN__))
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# define OSTD_PLATFORM_WIN32 1
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# if defined(WIN64) || defined(_WIN64)
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# define OSTD_PLATFORM_WIN64 1
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# endif
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#else
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# define OSTD_PLATFORM_POSIX 1
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# if defined(__linux__)
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# define OSTD_PLATFORM_LINUX 1
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# endif
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# if defined(__APPLE__)
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# define OSTD_PLATFORM_OSX 1
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# endif
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# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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# define OSTD_PLATFORM_FREEBSD 1
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# define OSTD_PLATFORM_BSD 1
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# endif
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# if defined(__NetBSD__)
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# define OSTD_PLATFORM_NETBSD 1
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# define OSTD_PLATFORM_BSD 1
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# endif
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# if defined(__OpenBSD__)
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# define OSTD_PLATFORM_OPENBSD 1
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# define OSTD_PLATFORM_BSD 1
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# endif
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# if defined(__DragonFly__)
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# define OSTD_PLATFORM_DRAGONFLYBSD 1
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# define OSTD_PLATFORM_BSD 1
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# endif
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# if defined(sun) || defined(__sun)
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# define OSTD_PLATFORM_SOLARIS 1
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# endif
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#endif
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#if defined(__clang__)
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# define OSTD_TOOLCHAIN_CLANG 1
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#endif
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#if defined(__GNUC__)
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# define OSTD_TOOLCHAIN_GNU 1
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#endif
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#if defined(_MSC_VER)
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# define OSTD_TOOLCHAIN_MSVC 1
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#endif
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#define OSTD_ENDIAN_LIL 1234
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#define OSTD_ENDIAN_BIG 4321
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#ifdef OSTD_PLATFORM_LINUX
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# include <endian.h>
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# define OSTD_BYTE_ORDER __BYTE_ORDER
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#else
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# if defined(__BIG_ENDIAN__) || defined(__ARMEB__) || defined(__THUMBEB__) || \
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defined(__AARCH64EB__) || defined(__MIPSEB__) || defined(__MIPSEB) || \
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defined(_MIPSEB) || defined(__ppc__) || defined(__POWERPC__) || \
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defined(_M_PPC) || defined(__sparc__)
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# define OSTD_BYTE_ORDER OSTD_ENDIAN_BIG
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# else
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# define OSTD_BYTE_ORDER OSTD_ENDIAN_LIL
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# endif
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#endif
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#ifdef OSTD_PLATFORM_WIN32
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# ifdef OSTD_LIBRARY_DLL
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# ifdef OSTD_TOOLCHAIN_GNU
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# define OSTD_EXPORT __attribute__((dllexport))
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# else
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# define OSTD_EXPORT __declspec(dllexport)
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# endif
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# else
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# ifdef OSTD_TOOLCHAIN_GNU
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# define OSTD_EXPORT __attribute__((dllimport))
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# else
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# define OSTD_EXPORT __declspec(dllimport)
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# endif
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# endif
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# define OSTD_LOCAL
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#else
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# if __GNUC__ >= 4
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# define OSTD_EXPORT __attribute__((visibility("default")))
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# define OSTD_LOCAL __attribute__((visibility("hidden")))
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# else
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# define OSTD_EXPORT
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# define OSTD_LOCAL
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# endif
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#endif
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namespace ostd {
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#if defined(OSTD_TOOLCHAIN_GNU)
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/* using gcc/clang builtins */
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inline uint16_t endian_swap16(uint16_t x) {
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return __builtin_bswap16(x);
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}
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inline uint32_t endian_swap32(uint32_t x) {
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return __builtin_bswap32(x);
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}
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inline uint64_t endian_swap64(uint64_t x) {
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return __builtin_bswap64(x);
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}
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#elif defined(OSTD_TOOLCHAIN_MSVC)
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/* using msvc builtins */
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inline uint16_t endian_swap16(uint16_t x) {
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return _byteswap_ushort(x);
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}
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inline uint32_t endian_swap32(uint32_t x) {
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/* win64 is llp64 */
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return _byteswap_ulong(x);
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}
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inline uint64_t endian_swap64(uint64_t x) {
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return _byteswap_uint64(x);
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}
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#else
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/* fallback */
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inline uint16_t endian_swap16(uint16_t x) {
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return (x << 8) | (x >> 8);
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}
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inline uint32_t endian_swap32(uint32_t x) {
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return (x << 24) | (x >> 24) | ((x >> 8) & 0xFF00) | ((x << 8) & 0xFF0000);
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}
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inline uint64_t endian_swap64(uint64_t x) {
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return endian_swap32(uint32_t(x >> 32)) | (uint64_t(endian_swap32(uint32_t(x))) << 32);
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}
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#endif
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}
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#endif
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