mmx_defs.h

   1 /*
   2   This file contains most common definitions to make MMX stuff
   3   easy portable between different kinds of mmx clones
   4   Written By Nick Kurshev <nickols_k@mail.ru>
   5 */
   6
   7 #ifndef MMXDEFS_INCLUDED
   8 #define MMXDEFS_INCLUDED
   9
  10 #include "config.h"
  11
  12 #undef HAVE_MMX1
  13 #if defined(HAVE_MMX) && !defined(HAVE_MMX2) && !defined(HAVE_3DNOW) && !defined(HAVE_SSE)
  14 #define HAVE_MMX1
  15 #endif
  16
  17 #undef HAVE_K6_2PLUS
  18 #if !defined( HAVE_MMX2 ) && defined( HAVE_3DNOW )
  19 #define HAVE_K6_2PLUS
  20 #endif
  21
  22 #ifdef HAVE_SSE2
  23 #define MMREG_SIZE 16
  24 #else
  25 #define MMREG_SIZE 8
  26 #endif
  27
  28 #ifdef HAVE_3DNOW
  29 #define PREFETCH  "prefetch"
  30 #define PREFETCHW "prefetchw"
  31 #define PAVGB     "pavgusb"
  32 #elif defined ( HAVE_MMX2 )
  33 #define PREFETCH "prefetchnta"
  34 #define PREFETCHW "prefetcht0"
  35 #define PAVGB     "pavgb"
  36 #else
  37 #define PREFETCH "/nop"
  38 #define PREFETCHW "/nop"
  39 #endif
  40
  41 #ifdef HAVE_3DNOW
  42 /* On K6 femms is faster of emms. On K7 femms is directly mapped on emms. */
  43 #define EMMS     "femms"
  44 #else
  45 #define EMMS     "emms"
  46 #endif
  47
  48 #ifdef HAVE_MMX2
  49 #define MOVNTQ "movntq"
  50 #define SFENCE "sfence"
  51 #else
  52 #define MOVNTQ "movq"
  53 #define SFENCE "/nop"
  54 #endif
  55
  56
  57 #endif