source/common/cpu.h

   1 /*****************************************************************************
   2  * Copyright (C) 2013 x265 project
   3  *
   4  * Authors: Loren Merritt <lorenm@u.washington.edu>
   5  *          Steve Borho <steve@borho.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
  20  *
  21  * This program is also available under a commercial proprietary license.
  22  * For more information, contact us at license @ x265.com.
  23  *****************************************************************************/
  24
  25 #ifndef X265_CPU_H
  26 #define X265_CPU_H
  27
  28 #include "common.h"
  29
  30 // from cpu-a.asm, if ASM primitives are compiled, else primitives.cpp
  31 extern "C" void x265_cpu_emms(void);
  32 extern "C" void x265_safe_intel_cpu_indicator_init(void);
  33
  34 #if _MSC_VER && _WIN64
  35 #define x265_emms() x265_cpu_emms()
  36 #elif _MSC_VER
  37 #include <mmintrin.h>
  38 #define x265_emms() _mm_empty()
  39 #elif __GNUC__
  40 // Cannot use _mm_empty() directly without compiling all the source with
  41 // a fixed CPU arch, which we would like to avoid at the moment
  42 #define x265_emms() x265_cpu_emms()
  43 #else
  44 #define x265_emms() x265_cpu_emms()
  45 #endif
  46
  47 namespace x265 {
  48 uint32_t cpu_detect(void);
  49
  50 struct cpu_name_t
  51 {
  52     char name[16];
  53     uint32_t flags;
  54 };
  55
  56 extern const cpu_name_t cpu_names[];
  57 }
  58
  59 #endif // ifndef X265_CPU_H