/[svn]/linuxsampler/trunk/src/common/Features.cpp
ViewVC logotype

Diff of /linuxsampler/trunk/src/common/Features.cpp

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1313 by schoenebeck, Wed Jun 8 21:00:06 2005 UTC revision 1314 by schoenebeck, Fri Aug 31 10:29:13 2007 UTC
# Line 3  Line 3 
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005 Christian Schoenebeck                              *   *   Copyright (C) 2005 - 2007 Christian Schoenebeck                       *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 28  bool Features::bMMX(false); Line 28  bool Features::bMMX(false);
28  bool Features::bSSE(false);  bool Features::bSSE(false);
29  bool Features::bSSE2(false);  bool Features::bSSE2(false);
30    
 unsigned int edx = 0;  
 unsigned int eax_temp = 0;  
 unsigned int ebx_temp = 0;  
 unsigned int ecx_temp = 0;  
 unsigned int edx_temp = 0;  
   
31  void Features::detect() {  void Features::detect() {
32      // we store and restore all registers modified by 'cpuid' the old fashioned way      int edx;
33      __asm__ __volatile__ (      __asm__ __volatile__ (
34          "mov %eax,eax_temp\n\t"          "movl %%ebx,%%edi\n\t" /*save PIC register*/
35          "mov %ebx,ebx_temp\n\t"          "movl $1,%%eax\n\t"
         "mov %ecx,ecx_temp\n\t"  
         "mov %edx,edx_temp\n\t"  
         "mov $1,%eax\n\t"  
36          "cpuid\n\t"          "cpuid\n\t"
37          "mov %edx,edx\n\t"          "movl %%edi,%%ebx\n\t" /*restore PIC register*/
38          "mov eax_temp,%eax\n\t"          : "=d" (edx)
39          "mov ebx_temp,%ebx\n\t"          : : "%eax", "%ecx", "%edi"
         "mov ecx_temp,%ecx\n\t"  
         "mov edx_temp,%edx\n\t"  
40      );      );
41      bMMX = (edx & 0x00800000);      bMMX = (edx & 0x00800000);
42      bSSE = (edx & 0x02000000);      bSSE = (edx & 0x02000000);

Legend:
Removed from v.1313  
changed lines
  Added in v.1314

  ViewVC Help
Powered by ViewVC