From 43394c8a8908442982e3a7e25975c31b3c952923 Mon Sep 17 00:00:00 2001 From: Nikolas Date: Sun, 27 Oct 2024 12:52:55 +0200 Subject: root --- 3rdparty/include/SDL2/SDL_cpuinfo.h | 275 ++++++++++++++++++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 3rdparty/include/SDL2/SDL_cpuinfo.h (limited to '3rdparty/include/SDL2/SDL_cpuinfo.h') diff --git a/3rdparty/include/SDL2/SDL_cpuinfo.h b/3rdparty/include/SDL2/SDL_cpuinfo.h new file mode 100644 index 0000000..0d9b821 --- /dev/null +++ b/3rdparty/include/SDL2/SDL_cpuinfo.h @@ -0,0 +1,275 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2020 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_cpuinfo.h + * + * CPU feature detection for SDL. + */ + +#ifndef SDL_cpuinfo_h_ +#define SDL_cpuinfo_h_ + +#include "SDL_stdinc.h" + +/* Need to do this here because intrin.h has C++ code in it */ +/* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64)) +#ifdef __clang__ +/* Many of the intrinsics SDL uses are not implemented by clang with Visual Studio */ +#undef __MMX__ +#undef __SSE__ +#undef __SSE2__ +#else +#include +#ifndef _WIN64 +#ifndef __MMX__ +#define __MMX__ +#endif +#ifndef __3dNOW__ +#define __3dNOW__ +#endif +#endif +#ifndef __SSE__ +#define __SSE__ +#endif +#ifndef __SSE2__ +#define __SSE2__ +#endif +#endif /* __clang__ */ +#elif defined(__MINGW64_VERSION_MAJOR) +#include +#else +/* altivec.h redefining bool causes a number of problems, see bugs 3993 and 4392, so you need to explicitly define SDL_ENABLE_ALTIVEC_H to have it included. */ +#if defined(HAVE_ALTIVEC_H) && defined(__ALTIVEC__) && !defined(__APPLE_ALTIVEC__) && defined(SDL_ENABLE_ALTIVEC_H) +#include +#endif +#if !defined(SDL_DISABLE_ARM_NEON_H) +# if defined(__ARM_NEON) +# include +# elif defined(__WINDOWS__) || defined(__WINRT__) +/* Visual Studio doesn't define __ARM_ARCH, but _M_ARM (if set, always 7), and _M_ARM64 (if set, always 1). */ +# if defined(_M_ARM) +# include +# include +# define __ARM_NEON 1 /* Set __ARM_NEON so that it can be used elsewhere, at compile time */ +# endif +# if defined (_M_ARM64) +# include +# include +# define __ARM_NEON 1 /* Set __ARM_NEON so that it can be used elsewhere, at compile time */ +# endif +# endif +#endif +#if defined(__3dNOW__) && !defined(SDL_DISABLE_MM3DNOW_H) +#include +#endif +#if defined(HAVE_IMMINTRIN_H) && !defined(SDL_DISABLE_IMMINTRIN_H) +#include +#else +#if defined(__MMX__) && !defined(SDL_DISABLE_MMINTRIN_H) +#include +#endif +#if defined(__SSE__) && !defined(SDL_DISABLE_XMMINTRIN_H) +#include +#endif +#if defined(__SSE2__) && !defined(SDL_DISABLE_EMMINTRIN_H) +#include +#endif +#if defined(__SSE3__) && !defined(SDL_DISABLE_PMMINTRIN_H) +#include +#endif +#endif /* HAVE_IMMINTRIN_H */ +#endif /* compiler version */ + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/* This is a guess for the cacheline size used for padding. + * Most x86 processors have a 64 byte cache line. + * The 64-bit PowerPC processors have a 128 byte cache line. + * We'll use the larger value to be generally safe. + */ +#define SDL_CACHELINE_SIZE 128 + +/** + * This function returns the number of CPU cores available. + */ +extern DECLSPEC int SDLCALL SDL_GetCPUCount(void); + +/** + * This function returns the L1 cache line size of the CPU + * + * This is useful for determining multi-threaded structure padding + * or SIMD prefetch sizes. + */ +extern DECLSPEC int SDLCALL SDL_GetCPUCacheLineSize(void); + +/** + * This function returns true if the CPU has the RDTSC instruction. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasRDTSC(void); + +/** + * This function returns true if the CPU has AltiVec features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasAltiVec(void); + +/** + * This function returns true if the CPU has MMX features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasMMX(void); + +/** + * This function returns true if the CPU has 3DNow! features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_Has3DNow(void); + +/** + * This function returns true if the CPU has SSE features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE(void); + +/** + * This function returns true if the CPU has SSE2 features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE2(void); + +/** + * This function returns true if the CPU has SSE3 features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE3(void); + +/** + * This function returns true if the CPU has SSE4.1 features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE41(void); + +/** + * This function returns true if the CPU has SSE4.2 features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasSSE42(void); + +/** + * This function returns true if the CPU has AVX features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void); + +/** + * This function returns true if the CPU has AVX2 features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void); + +/** + * This function returns true if the CPU has AVX-512F (foundation) features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX512F(void); + +/** + * This function returns true if the CPU has ARM SIMD (ARMv6) features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasARMSIMD(void); + +/** + * This function returns true if the CPU has NEON (ARM SIMD) features. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void); + +/** + * This function returns the amount of RAM configured in the system, in MB. + */ +extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void); + +/** + * \brief Report the alignment this system needs for SIMD allocations. + * + * This will return the minimum number of bytes to which a pointer must be + * aligned to be compatible with SIMD instructions on the current machine. + * For example, if the machine supports SSE only, it will return 16, but if + * it supports AVX-512F, it'll return 64 (etc). This only reports values for + * instruction sets SDL knows about, so if your SDL build doesn't have + * SDL_HasAVX512F(), then it might return 16 for the SSE support it sees and + * not 64 for the AVX-512 instructions that exist but SDL doesn't know about. + * Plan accordingly. + */ +extern DECLSPEC size_t SDLCALL SDL_SIMDGetAlignment(void); + +/** + * \brief Allocate memory in a SIMD-friendly way. + * + * This will allocate a block of memory that is suitable for use with SIMD + * instructions. Specifically, it will be properly aligned and padded for + * the system's supported vector instructions. + * + * The memory returned will be padded such that it is safe to read or write + * an incomplete vector at the end of the memory block. This can be useful + * so you don't have to drop back to a scalar fallback at the end of your + * SIMD processing loop to deal with the final elements without overflowing + * the allocated buffer. + * + * You must free this memory with SDL_FreeSIMD(), not free() or SDL_free() + * or delete[], etc. + * + * Note that SDL will only deal with SIMD instruction sets it is aware of; + * for example, SDL 2.0.8 knows that SSE wants 16-byte vectors + * (SDL_HasSSE()), and AVX2 wants 32 bytes (SDL_HasAVX2()), but doesn't + * know that AVX-512 wants 64. To be clear: if you can't decide to use an + * instruction set with an SDL_Has*() function, don't use that instruction + * set with memory allocated through here. + * + * SDL_AllocSIMD(0) will return a non-NULL pointer, assuming the system isn't + * out of memory. + * + * \param len The length, in bytes, of the block to allocated. The actual + * allocated block might be larger due to padding, etc. + * \return Pointer to newly-allocated block, NULL if out of memory. + * + * \sa SDL_SIMDAlignment + * \sa SDL_SIMDFree + */ +extern DECLSPEC void * SDLCALL SDL_SIMDAlloc(const size_t len); + +/** + * \brief Deallocate memory obtained from SDL_SIMDAlloc + * + * It is not valid to use this function on a pointer from anything but + * SDL_SIMDAlloc(). It can't be used on pointers from malloc, realloc, + * SDL_malloc, memalign, new[], etc. + * + * However, SDL_SIMDFree(NULL) is a legal no-op. + * + * \sa SDL_SIMDAlloc + */ +extern DECLSPEC void SDLCALL SDL_SIMDFree(void *ptr); + +/* vi: set ts=4 sw=4 expandtab: */ +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_cpuinfo_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ -- cgit v1.2.3