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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_b87deefade4e886319aa926bd3ba1491.html">vmm</a></div>
<h1>page_fault.S</h1><a href="page__fault_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: page__fault_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 <span class="comment">/*</span>
<a name="l00031"></a>00031 <span class="comment"> Page fault wrapper this will aquire some values we need for later use</span>
<a name="l00032"></a>00032 <span class="comment"> */</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 .globl <a class="code" href="page__fault_8S.html#6091cb277c1dd3e3e4d1d4699f3b06e5">_vmm_pageFault</a>
<a name="l00035"></a>00035 .text
<a name="l00036"></a>00036 .code32
<a name="l00037"></a>00037 <a class="code" href="page__fault_8S.html#6091cb277c1dd3e3e4d1d4699f3b06e5">_vmm_pageFault</a>:
<a name="l00038"></a><a class="code" href="page__fault_8S.html#6091cb277c1dd3e3e4d1d4699f3b06e5">00038</a> <a class="code" href="ap-boot_8S.html#df1e49503579f877a12fa32eed02f088">xchgl</a> %<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a>,(%<a class="code" href="start_8S.html#00530026cdfd3cedfaee7ac4ec46aa53">esp</a>) <span class="comment">/* Save EAX */</span>
<a name="l00039"></a>00039 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> 4(%<a class="code" href="start_8S.html#00530026cdfd3cedfaee7ac4ec46aa53">esp</a>),%<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a> <span class="comment">/* Move EIP into EAX to use later */</span>
<a name="l00040"></a>00040 pushl %<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a> <span class="comment">/* Save EBX */</span>
<a name="l00041"></a>00041 <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> 20(%<a class="code" href="start_8S.html#00530026cdfd3cedfaee7ac4ec46aa53">esp</a>),%<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a> <span class="comment">/* Save ESP for ring 3 to use later */</span>
<a name="l00042"></a>00042 pushl %ecx <span class="comment">/* Save ECX,EDX */</span>
<a name="l00043"></a>00043 pushl %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a>
<a name="l00044"></a>00044 push %<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a> <span class="comment">/* Push ESP */</span>
<a name="l00045"></a>00045 push %<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a> <span class="comment">/* Push EIP */</span>
<a name="l00046"></a><a class="code" href="page__fault_8S.html#fe08e109dba1476bd0d98621ec5e2821">00046</a> <a class="code" href="timer_8S.html#e987d7c277439abad5828bb7b0291042">movl</a> %<a class="code" href="page__fault_8S.html#4c6ccd9c1f963885a5adbf971109133b">cr2</a>,%<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a> <span class="comment">/* Push the faulted address */</span>
<a name="l00047"></a>00047 pushl %<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a>
<a name="l00048"></a>00048 sti <span class="comment">/* Turn interrupts back on we are now entrant safe */</span>
<a name="l00049"></a>00049 call <a class="code" href="paging_8h.html#442adfc886cbfedfc3edadf45c5f89a6">vmm_pageFault</a> <span class="comment">/* Call our page fault handler */</span>
<a name="l00050"></a>00050 <a class="code" href="sys__call__new_8S.html#bf8ddf6928259c0057aa3377e79b093e">addl</a> $0<a class="code" href="page__fault_8S.html#fe08e109dba1476bd0d98621ec5e2821">xC</a>,%<a class="code" href="start_8S.html#00530026cdfd3cedfaee7ac4ec46aa53">esp</a> <span class="comment">/* Adjust the stack to compensate for pushed values */</span>
<a name="l00051"></a>00051 popl %<a class="code" href="timer_8S.html#15bdf6d1016b28a29ed53c35bcc6113b">edx</a> <span class="comment">/* Restore EAX,EBX,ECX,EDX */</span>
<a name="l00052"></a>00052 popl %ecx
<a name="l00053"></a>00053 popl %<a class="code" href="ap-boot_8S.html#8771927de13b84dd7f9deec6024f83df">ebx</a>
<a name="l00054"></a>00054 popl %<a class="code" href="start_8S.html#99c8741e5f964a3b896c5d21808dd942">eax</a>
<a name="l00055"></a>00055 iret <span class="comment">/* Return from the interrupt */</span>
<a name="l00056"></a>00056
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">/***</span>
<a name="l00059"></a>00059 <span class="comment"> END</span>
<a name="l00060"></a>00060 <span class="comment"> ***/</span>
</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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