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/*
* Fenix - Videogame compiler/interpreter
* Current release : FENIX - PROJECT 1.0 - R 0.84
* Last stable release :
* Project documentation : http://fenix.divsite.net
*
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Copyright 1999 Jos Luis Cebrin Page
* Copyright 2002 Fenix Team
*
*/
/*
* FILE : mmx_main.c
* DESCRIPTION : MMX support routines (including CPUID)
*
* HISTORY: 0.82 - First version
*/
#include "fxi.h"
int MMX_available = 0;
/*
* FUNCTION : MMX_init
*
* See if the current processor supports MMX and update the
* global variable mmx_available with either 1 or 0
*
* PARAMS :
* None
*
* RETURN VALUE :
* 1 if MMX available, 0 otherwise
*
*/
void MMX_init()
{
#ifdef MMX_FUNCTIONS
int cpuid_processor;
int cpuid_features;
#ifdef __GNUC__
__asm__ __volatile__ (
"movl $1, %%eax \n"
"cpuid \n"
: "=a" (cpuid_processor), "=d" (cpuid_features)
);
#else
_asm
{
mov eax,1
cpuid
mov cpuid_processor, eax
mov cpuid_features, edx
}
#endif
MMX_available = (cpuid_features & (1 << 23)) ? 1:0;
#else
MMX_available = 0;
#endif
}
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