libx/base/xfbswap.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <libx/base.h>
  21
  22 void xfbswap ()
  23 {
  24         asm volatile (
  25                 "movl $36, %%eax;"
  26                 "int $0x80;"
  27                 ::: "%eax");
  28
  29 /*      if (vgadb != vgafb) {
  30                 unsigned l = vgafb_res_x*vgafb_res_y;
  31                 unsigned i = 0;
  32                 for (i = 0; i < l; i ++) {
  33                         vgafb[i] = vgadb[i];
  34                         vgadb[i] = 0;
  35                 }
  36         }*/
  37 }