mi32/cpuext.h

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/**************************************************************************
 *
 * \file cpuext.h <mi32/cpuext.h>
 * \brief CPU Extension support routines
 *
 *    Note. This file can be safely included for any processor
 *
 * \if NODOC
 * $Log: cpuext.h_v $
 * Revision 1.20  2008/10/14 13:12:17  mju
 * Doxygen fix.
 *
 * Revision 1.19  2006/03/10 17:00:55  mju
 * Disallow win64.
 *
 * Revision 1.18  2006/02/16 16:13:55  dwilliss
 * changed an ifdef to use new define instead of deprecated one
 *
 * Revision 1.17  2005/07/15 14:57:19  mju
 * Add comment as to why string hjdr gets included.
 *
 * Revision 1.16  2005/07/15 14:01:47  mju
 * Include memory and string hdrs so works correctly again.
 *
 * Revision 1.15  2005/07/14 17:35:55  mju
 * Remove stdansic hdr.
 *
 * Revision 1.14  2004/07/06 22:11:54  dwilliss
 * *** empty log message ***
 *
 * Revision 1.13  2004/06/29 22:03:24  dwilliss
 * Added more CPU feature flags
 *
 * Revision 1.12  2004/06/15 14:43:30  dwilliss
 * Defined readTSC() (Taken from Dr Dobbs Journal, May 2004, page 23)
 *
 * Revision 1.11  2004/01/30 22:23:59  dwilliss
 * Only try to include wchar.h on WIN32. Not necessary on Unix and doesn't
 * exist anyway.
 *
 * Revision 1.10  2003/12/29 22:04:10  scowan
 * Include wchar so that we do not corrupt memcpy for it.
 *
 * Revision 1.9  2003/12/12 20:28:00  dwilliss
 * Added protos for some new alpha blending funcitons
 *
 * Revision 1.8  2003/09/15 13:49:56  fileserver!dwilliss
 * Doxygen
 *
 * Revision 1.7  2002/02/26 22:56:33  dwilliss
 * More prototypes
 *
 * Revision 1.6  2002/02/20 23:23:03  dwilliss
 * Added 32-bit alpha blending
 *
 * Revision 1.5  2001/05/18 20:40:35  dwilliss
 * Added more prototypes and documentation
 *
 * Revision 1.4  2001/05/17 14:40:22  dwilliss
 * Added PREFETCHNTA flag
 *
 * Revision 1.3  2001/05/16 21:15:29  dwilliss
 * Move #define constants so they they're always defined
 *
 * Revision 1.2  2001/05/16 20:38:59  dwilliss
 * Make amemcpy() match memcpy() in signature
 *
 * Revision 1.1  2001/05/16 19:44:49  dwilliss
 * Initial revision
 *
 *
 * \endif
 */
#ifndef INC_MI32_CPUEXT_H
#define INC_MI32_CPUEXT_H

#ifndef INC_MI32_STDDEFNS_H
#include <mi32/stddefns.h>
#endif

#ifndef  INC_STDDEF_H
#include <stddef.h>  // For size_t define
#define  INC_STDDEF_H
#endif

// string.h contains the original memcpy prototype.
// In stddefns.h we may have defined memcpy as amemcpy, so the prototype
// from string.h must be defined first to avoid compiler errors.
#ifndef  INC_STRING_H
#ifndef GENERATING_DOXYGEN_OUTPUT
#include <string.h>
#define  INC_STRING_H
#endif
#endif

#ifdef WIN32
#ifndef _INC_WCHAR
#include <wchar.h>         // To not override memcpy() define in wchar.h
#endif
#endif


#ifdef MISYSTEMDLL
   #define LIBEXPORT MI_DLLEXPORT
#else
   #define LIBEXPORT MI_DLLIMPORT
#endif

#define  CPUEXT_MMX           0x00000001  
#define  CPUEXT_SIMD          0x00000002  
#define  CPUEXT_SSE           0x00000002  
#define  CPUEXT_PREFETCHNTA   0x00000004  
#define  CPUEXT_SSE2          0x00000008  
#define  CPUEXT_CMOV          0x00000010  
#define  CPUEXT_TSC           0x00000020  
#define  CPUEXT_3DNOW         0x00010000  
#define  CPUEXT_3DNOWEX       0x00020000  
#define  CPUEXT_AMDMMX        0x00040000  


#if defined(__cplusplus)
extern "C" {
#endif

#if defined(LINUX) && defined(INTEL)
   // Although we never use it, this version of TSC is supposed to work on
   // gcc.  I got this version from a letter in Dr. Dobbs Journal, July 2004
   // Page 8.  It's here to preserve it for postarity and so that I won't have
   // to figure it out again later.
   #define readTSC() ({unsigned long long __scr; __asm__ __volatile__ ("rdtsc" :"=A"(__scr));__scr;})
#endif

#if defined(WIN32) && !defined(WIN64)

   LIBEXPORT UINT32 GetCPUExtension();

   inline __int64 readTSC() { __asm { rdtsc } }

#ifndef GENERATING_DOXYGEN_OUTPUT

   
   extern void* (*amemcpy)(void* dest, const void* src, size_t size);
#endif 

#else    

#define GetCPUExtension() (0)
#define amemcpy memcpy

#endif   

#define HasMMX() (GetCPUExtension() & CPUEXT_MMX)

#if 0 // Fake function prototypes for Genitor to generate documentation from

void* amemcpy (
   void* dest, 
   const void* src, 
   size_t size
   );

#endif      

void AlphaBlend24 (
   UINT8* dest, 
   const UINT8* src, 
   UINT8 alpha, 
   int n
   );

void AlphaBlendVarAlpha24 (
   UINT8* dest, 
   const UINT8* src, 
   const UINT8* alpha,     
   int n
   );

void AlphaBlendColor24 (
   UINT8* dest, 
   UINT8 r, 
   UINT8 g,
   UINT8 b, 
   UINT8 alpha, 
   int n
   );

void AlphaBlend32 (
   UINT32* dest, 
   const UINT32* src, 
   UINT8 alpha, 
   int n
   );

void AlphaBlendVarAlpha32 (
   UINT32* dest, 
   const UINT32* src, 
   const UINT8* alpha, 
   int n
   );

void AlphaBlendColor32 (
   UINT32* dest, 
   UINT32 pix, 
   UINT8 alpha, 
   int n
   );


void AlphaBlendColor32RGBA (
   UINT32* dest, 
   UINT32 pix, 
   int n
   );


void AlphaBlendColor32ABGR (
   UINT32* dest, 
   UINT32 pix, 
   int n
   );


#if defined(__cplusplus)
}
#endif

#endif

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