halt.c

来自「一个操作系统的源代码」· C语言 代码 · 共 47 行

/** halt.c                                  
 **                                                              
 ** Original Author: Kasper Verdich Lund                         
 ** Date: 10.26.99     
 ** 
 ** Description:
 ** Simple routine for halting the system     
 **                                       
 ** Revision History: 
 ** First version     
 **
 ** 0.0.1 10.26.99 Kasper Verdich Lund - (no comments)
 **
 ** 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 or 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                                    
 **                                                              
 *********************************************************Apostle OS**/

#include <halt.h>
#include <types.h>

#ifdef DEBUG
#include <debug/conio.h>
#endif

void halt(void)
{
#ifdef DEBUG
  DebugPrintF("\nhalt() is called\nSystem halted.");
#endif
  while (TRUE) /* do nothing */
    __asm__ ("hlt"::);	/* give the CPU some rest */
}