/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

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 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 $Id$

*****************************************************************************************/

.globl timerInt
.text
.code32
timerInt:         
  pusha                    /* Save all of the registers                */
  push   %ss
  push   %ds
  push   %es
  push   %fs
  push   %gs
  mov $0x20,%dx            /* The Following Sends Our EOI To The MPIC  */
  mov $0x20,%ax           
  outb %al,%dx
  movl systemVitals,%ecx   /* Put Location Of System Vitals Into ECX   */
  incl 4(%ecx)             /* Increment sysTicks our 1000ms counter    */                    
  movl 4(%ecx),%eax        /* Increment our sysUptime by 1S if 1000MS  */
  movl $200,%ebx           /* Have Passed                              */
  xor %edx,%edx           
  div %ebx               
  test %edx,%edx          
  jnz next                
  incl 8(%ecx)            
next:                     
  movl 4(%ecx),%eax        /* Test If quantum Has Passed If So Then    */
  movl 12(%ecx),%ebx       /* We Can CALL sched                        */
  xor %edx,%edx           
  div %ebx                
  test %edx,%edx          
  jnz timer_done                
  call sched   
  mov  %eax,%esp
timer_done:    
  pop  %gs
  pop  %fs             
  pop  %es
  pop  %ds
  pop  %ss                 
  popa                      /* Restore Registers                        */
  iret                    

/***
 $Log$
 Revision 1.8  2004/08/21 23:47:50  reddawg
 *** empty log message ***

 Revision 1.7  2004/08/21 20:06:28  reddawg
 ok check out exec.c

 Revision 1.6  2004/08/14 11:23:02  reddawg
 Changes

 Revision 1.5  2004/07/29 21:32:16  reddawg
 My quick lunchs breaks worth of updates....

 Revision 1.4  2004/07/23 17:49:59  reddawg
 atkbd: adjust the timing issue on the driver hopefully it will work fine now

 Revision 1.3  2004/07/22 17:32:25  reddawg
 I broke it hopefully

 Revision 1.2  2004/07/16 04:06:32  reddawg
 Tune ups this stuff should of been taken care of months ago

 Revision 1.1  2004/06/17 12:11:14  reddawg
 timerInt: removed from src/sys/sys/idt.c and moved into a file by itself
           in src/sys/kernel/timer.S

 END
 ***/