uisimulator/sdl/system-sdl.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Michael Sevakis
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #ifndef _SYSTEM_SDL_H_
  20 #define _SYSTEM_SDL_H_
  21
  22 #include <stdbool.h>
  23
  24 #define HIGHEST_IRQ_LEVEL 1
  25
  26 int set_irq_level(int level);
  27
  28 #define disable_irq() \
  29     ((void)set_irq_level(HIGHEST_IRQ_LEVEL))
  30
  31 #define enable_irq()  \
  32     ((void)set_irq_level(0))
  33
  34 #define disable_irq_save() \
  35     set_irq_level(HIGHEST_IRQ_LEVEL)
  36
  37 #define restore_irq(level) \
  38     ((void)set_irq_level(level))
  39
  40 void sim_enter_irq_handler(void);
  41 void sim_exit_irq_handler(void);
  42 bool sim_kernel_init(void);
  43 void sim_kernel_shutdown(void);
  44
  45 extern long start_tick;
  46
  47 #endif /* _SYSTEM_SDL_H_ */