include/detectcpu.h

   1 /*
   2  * $Id$
   3  *
   4  *                This source code is part of
   5  *
   6  *                 G   R   O   M   A   C   S
   7  *
   8  *          GROningen MAchine for Chemical Simulations
   9  *
  10  *                        VERSION 3.2.0
  11  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  12  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  13  * Copyright (c) 2001-2004, The GROMACS development team,
  14  * check out http://www.gromacs.org for more information.
  15
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License
  18  * as published by the Free Software Foundation; either version 2
  19  * of the License, or (at your option) any later version.
  20  *
  21  * If you want to redistribute modifications, please consider that
  22  * scientific software is very special. Version control is crucial -
  23  * bugs must be traceable. We will be happy to consider code for
  24  * inclusion in the official distribution, but derived work must not
  25  * be called official GROMACS. Details are found in the README & COPYING
  26  * files - if they are missing, get the official version at www.gromacs.org.
  27  *
  28  * To help us fund GROMACS development, we humbly ask that you cite
  29  * the papers on the package - you can find them in the top README file.
  30  *
  31  * For more info, check our website at http://www.gromacs.org
  32  *
  33  * And Hey:
  34  * Gromacs Runs On Most of All Computer Systems
  35  */
  36
  37 #ifndef _detectcpu_h
  38 #define _detectcpu_h
  39
  40 #ifdef HAVE_CONFIG_H
  41 #include <config.h>
  42 #endif
  43
  44 #include <stdio.h>
  45
  46 extern int cpu_capabilities;
  47
  48 #define UNKNOWN_CPU           0
  49 /* Flags for x86 and future processor capabilities */
  50 #define X86_CPU               1
  51 #define X86_SSE_SUPPORT       (1 << 1)
  52 #define X86_3DNOW_SUPPORT     (1 << 2)
  53 #define X86_SSE2_SUPPORT      (1 << 3)
  54 /* 3Dnow professional has SSE support, treat it as SSE (=IEEE ok) */
  55 /* Even if the system cant do SSE, we want to tell the user that
  56  * his/her cpu could do it with an OS upgrade.
  57  * (This is not an issue for 3DNow)
  58  */
  59 #define CPU_SSE_SUPPORT       (1 << 4)
  60 #define CPU_SSE2_SUPPORT      (1 << 5)
  61 /* bit 6 unused */
  62 #define IA64_CPU              (1 << 7)
  63 #define PPC_CPU               (1 << 8)
  64 #define PPC_ALTIVEC_SUPPORT   (1 << 9)
  65 #define AMD_CPU               (1 << 10)
  66 #define INTEL_CPU             (1 << 11)
  67
  68 /* Values that are return by cpuid instructions on x86 */
  69 #define VENDOR_AMD   0x68747541
  70 #define VENDOR_INTEL 0x756e6547
  71 #define FLAGS_SUPPORT_SSE 0x02000000
  72 #define FLAGS_SUPPORT_SSE2 0x04000000
  73 #define FLAGS_SUPPORT_EXT_3DNOW 0xc0000000
  74
  75 #if ( defined USE_X86_SSE_AND_3DNOW || defined USE_X86_SSE2)
  76 /* x86 cpuid assembly routine in x86_cpuid.s */
  77 void x86_cpuid(int,unsigned long *,unsigned long *,unsigned long *,unsigned long *);
  78 #endif
  79
  80 #ifdef USE_X86_SSE_AND_3DNOW
  81 #include <x86_sse.h>
  82 #include <x86_3dnow.h>
  83 #endif
  84
  85 #ifdef USE_X86_SSE2
  86 #include <x86_sse2.h>
  87 #endif
  88
  89 #ifdef USE_PPC_ALTIVEC
  90 #include <ppc_altivec.h>
  91 #endif
  92
  93 int detect_cpu(FILE *log);
  94
  95 #endif