From ebb69e5e3765c0a65f92d4eb5e4ae8ba56c23f94 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Thu, 27 Dec 2018 11:25:30 +0100 Subject: Add CPU feature detection. Will be used for dynamically dispatching future asm functions. --- cpu.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 cpu.h (limited to 'cpu.h') diff --git a/cpu.h b/cpu.h new file mode 100644 index 0000000..e0c501d --- /dev/null +++ b/cpu.h @@ -0,0 +1,52 @@ +/* + * Copyright 2000-2017 the Libav developers + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef MG2D_CPU_H +#define MG2D_CPU_H + +#define MG2DI_CPU_FLAG_MMX 0x0001 ///< standard MMX +#define MG2DI_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext +#define MG2DI_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW +#define MG2DI_CPU_FLAG_SSE 0x0008 ///< SSE functions +#define MG2DI_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions +#define MG2DI_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster + ///< than regular MMX/SSE (e.g. Core1) +#define MG2DI_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt +#define MG2DI_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions +#define MG2DI_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster + ///< than regular MMX/SSE (e.g. Core1) +#define MG2DI_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions +#define MG2DI_CPU_FLAG_SSSE3SLOW 0x4000000 ///< SSSE3 supported, but usually not faster +#define MG2DI_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower +#define MG2DI_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions +#define MG2DI_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions +#define MG2DI_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used +#define MG2DI_CPU_FLAG_AVXSLOW 0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer) +#define MG2DI_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions +#define MG2DI_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions +#define MG2DI_CPU_FLAG_CMOV 0x1000 ///< i686 cmov +#define MG2DI_CPU_FLAG_AVX2 0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used +#define MG2DI_CPU_FLAG_FMA3 0x10000 ///< Haswell FMA3 functions +#define MG2DI_CPU_FLAG_BMI1 0x20000 ///< Bit Manipulation Instruction Set 1 +#define MG2DI_CPU_FLAG_BMI2 0x40000 ///< Bit Manipulation Instruction Set 2 + +int mg2di_cpu_flags_get(void); + +void mg2di_cpu_cpuid(int index, int *eax, int *ebx, int *ecx, int *edx); +void mg2di_cpu_xgetbv(int op, int *eax, int *edx); + +#endif /* MG2D_CPU_H */ -- cgit v1.2.3