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<a class="el" href="dir_897b6a2d7bab147dd1db58381aad3984.html">src</a> » <a class="el" href="dir_832905b1f7f5feaf61a306b40c0ac817.html">sys</a> » <a class="el" href="dir_7efffd2b1fae7bb6f2aa85845c863494.html">kernel</a></div>
<h1>timer.S</h1><a href="timer_8S.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*****************************************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (c) 2002-2004 The UbixOS Project</span>
<a name="l00003"></a>00003 <span class="comment"> All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Redistribution and use in source and binary forms, with or without modification, are</span>
<a name="l00006"></a>00006 <span class="comment"> permitted provided that the following conditions are met:</span>
<a name="l00007"></a>00007 <span class="comment"></span>
<a name="l00008"></a>00008 <span class="comment"> Redistributions of source code must retain the above copyright notice, this list of</span>
<a name="l00009"></a>00009 <span class="comment"> conditions, the following disclaimer and the list of authors. Redistributions in binary</span>
<a name="l00010"></a>00010 <span class="comment"> form must reproduce the above copyright notice, this list of conditions, the following</span>
<a name="l00011"></a>00011 <span class="comment"> disclaimer and the list of authors in the documentation and/or other materials provided</span>
<a name="l00012"></a>00012 <span class="comment"> with the distribution. Neither the name of the UbixOS Project nor the names of its</span>
<a name="l00013"></a>00013 <span class="comment"> contributors may be used to endorse or promote products derived from this software</span>
<a name="l00014"></a>00014 <span class="comment"> without specific prior written permission.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY</span>
<a name="l00017"></a>00017 <span class="comment"> EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span>
<a name="l00018"></a>00018 <span class="comment"> MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL</span>
<a name="l00019"></a>00019 <span class="comment"> THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00020"></a>00020 <span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span>
<a name="l00021"></a>00021 <span class="comment"> OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)</span>
<a name="l00022"></a>00022 <span class="comment"> HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR</span>
<a name="l00023"></a>00023 <span class="comment"> TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span>
<a name="l00024"></a>00024 <span class="comment"> SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00025"></a>00025 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment"> $Id: timer_8S-source.html 88 2016-01-12 00:11:29Z reddawg $</span>
<a name="l00027"></a>00027 <span class="comment"></span>
<a name="l00028"></a>00028 <span class="comment">*****************************************************************************************/</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 .globl <a class="code" href="timer_8S.html#1dda6dc7fd189e16cfcc28348fd1f21c">timerInt</a>
<a name="l00031"></a>00031 .text
<a name="l00032"></a>00032 .code32
<a name="l00033"></a>00033 <a class="code" href="timer_8S.html#1dda6dc7fd189e16cfcc28348fd1f21c">timerInt</a>:
<a name="l00034"></a>00034 pusha <span class="comment">/* Save all of the registers */</span>
<a name="l00035"></a><a class="code" href="timer_8S.html#ad733e790e2a3943e0633846a67875f5">00035</a> <a class="code" href="ap-boot_8S.html#ede772866220799485f4da9fc06e759d">mov</a> $0x20,%dx <span class="comment">/* The Following Sends Our EOI To The MPIC */</span>
<a name="l00036"></a>00036 <a class="code" href="ap-boot_8S.html#ede772866220799485f4da9fc06e759d">mov</a> $0x20,%<a class="code" href="ap-boot_8S.html#fe6e6cf4fb15afcba9890a66d0b89ffd">ax</a>
<a name="l00037"></a>00037 outb %<a class="code" href="ap-boot_8S.html#30e4a0d86bcf382b9396e2d95bcb31b2">al</a>,%dx
<a name="l00038"></a>00038 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> <a class="code" href="vitals_8h.html#67aae71be472453526fc1a0bfbf80280">systemVitals</a>,%ecx <span class="comment">/* Put Location Of System Vitals Into ECX */</span>
<a name="l00039"></a>00039 <a class="code" href="timer_8S.html#a38a66d3bb9e673984e1a52bc18713d7">incl</a> 4(%ecx) <span class="comment">/* Increment sysTicks our 1000ms counter */</span>
<a name="l00040"></a>00040 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> 4(%ecx),%<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a> <span class="comment">/* Increment our sysUptime by 1S if 1000MS */</span>
<a name="l00041"></a><a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">00041</a> <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> $200,%<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a> <span class="comment">/* Have Passed */</span>
<a name="l00042"></a>00042 xor %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>,%<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>
<a name="l00043"></a>00043 div %<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a>
<a name="l00044"></a>00044 test %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>,%<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>
<a name="l00045"></a>00045 jnz next
<a name="l00046"></a>00046 <a class="code" href="timer_8S.html#a38a66d3bb9e673984e1a52bc18713d7">incl</a> 8(%ecx)
<a name="l00047"></a>00047 next:
<a name="l00048"></a>00048 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> 4(%ecx),%<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a> <span class="comment">/* Test If quantum Has Passed If So Then */</span>
<a name="l00049"></a>00049 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> 12(%ecx),%<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a> <span class="comment">/* We Can CALL sched */</span>
<a name="l00050"></a>00050 xor %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>,%<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>
<a name="l00051"></a>00051 div %<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a>
<a name="l00052"></a>00052 test %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>,%<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>
<a name="l00053"></a>00053 jnz <a class="code" href="fdc_8c.html#3041fe08ed5976302158f2668249f8b2">done</a>
<a name="l00054"></a>00054 call <a class="code" href="sched_8h.html#549a0c1cc47933fa045b200690965cbd">sched</a>
<a name="l00055"></a>00055 <a class="code" href="fdc_8c.html#3041fe08ed5976302158f2668249f8b2">done</a>:
<a name="l00056"></a>00056 popa <span class="comment">/* Restore Registers */</span>
<a name="l00057"></a>00057 iret
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="comment">/***</span>
<a name="l00060"></a>00060 <span class="comment"> END</span>
<a name="l00061"></a>00061 <span class="comment"> ***/</span>
<a name="l00062"></a>00062
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Fri Dec 15 11:18:55 2006 for UbixOS V2 by
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