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Asuro/doc/vmemorymanager.html
Aaron Hance d4ea9c52ff Fixed line endings
2021-06-22 23:57:27 +01:00

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<title>Asuro: vmemorymanager</title>
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<h1 class="unit">Unit vmemorymanager</h1>
<div class="sections">
<div class="one_section"><a class="section" href="#PasDoc-Description">Description</a></div><div class="one_section"><a class="section" href="#PasDoc-Uses">Uses</a></div><div class="one_section">Classes, Interfaces, Objects and Records</div><div class="one_section"><a class="section" href="#PasDoc-FuncsProcs">Functions and Procedures</a></div><div class="one_section"><a class="section" href="#PasDoc-Types">Types</a></div><div class="one_section">Constants</div><div class="one_section"><a class="section" href="#PasDoc-Variables">Variables</a></div></div>
<span id="PasDoc-Description"></span><h2 class="description">Description</h2>
<p>
<code>VMemoryManager</code> - Virtual Memory Management.
<p></p>
<span id="PasDoc-Uses"></span><h2 class="uses">Uses</h2>
<ul class="useslist"><li><a href="util.html">util</a></li><li><a href="pmemorymanager.html">pmemorymanager</a></li><li><a href="console.html">console</a></li><li><a href="tracer.html">tracer</a></li></ul><h2 class="overview">Overview</h2>
<span id="PasDoc-FuncsProcs"></span><h3 class="summary">Functions and Procedures</h3>
<table class="summary wide_list">
<tr class="list">
<td class="itemcode"><code>procedure <b><a href="vmemorymanager.html#init">init</a></b>;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#new_page">new_page</a></b>(page_number : <a href="system.html#uInt16">uint16</a>) : boolean;</code></td>
</tr>
<tr class="list">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#map_page">map_page</a></b>(page_number : <a href="system.html#uInt16">uint16</a>; block : <a href="system.html#uInt16">uint16</a>) : boolean;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#map_page_ex">map_page_ex</a></b>(page_number : <a href="system.html#uInt16">uint16</a>; block : <a href="system.html#uInt16">uint16</a>; PD : <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>) : boolean;</code></td>
</tr>
<tr class="list">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#new_page_at_address">new_page_at_address</a></b>(address : <a href="system.html#uInt32">uint32</a>) : boolean;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code>procedure <b><a href="vmemorymanager.html#free_page">free_page</a></b>(page_number : <a href="system.html#uInt16">uint16</a>);</code></td>
</tr>
<tr class="list">
<td class="itemcode"><code>procedure <b><a href="vmemorymanager.html#free_page_at_address">free_page_at_address</a></b>(address : <a href="system.html#uInt32">uint32</a>);</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#new_page_directory">new_page_directory</a></b> : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
<tr class="list">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#new_kernel_mapped_page_directory">new_kernel_mapped_page_directory</a></b> : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code>function <b><a href="vmemorymanager.html#vtop">vtop</a></b>(address : <a href="system.html#uInt32">uint32</a>) : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
</table>
<span id="PasDoc-Types"></span><h3 class="summary">Types</h3>
<table class="summary wide_list">
<tr class="list">
<td class="itemcode"><code><b><a href="vmemorymanager.html#PPageDirEntry">PPageDirEntry</a></b> = &circ;<a href="vmemorymanager.html#TPageDirEntry">TPageDirEntry</a>;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code><b><a href="vmemorymanager.html#TPageDirEntry">TPageDirEntry</a></b> = bitpacked record
Present,
Writable,
UserMode,
WriteThrough,
NotCacheable,
Accessed,
Reserved,
PageSize,
GlobalPage: Boolean;
Available: <a href="system.html#UBit3">UBit3</a>;
Address: <a href="system.html#UBit20">UBit20</a>;
end;</code></td>
</tr>
<tr class="list">
<td class="itemcode"><code><b><a href="vmemorymanager.html#TPageDirectory">TPageDirectory</a></b> = Array[0..1023] of <a href="vmemorymanager.html#TPageDirEntry">TPageDirEntry</a>;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code><b><a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a></b> = &circ;<a href="vmemorymanager.html#TPageDirectory">TPageDirectory</a>;</code></td>
</tr>
</table>
<span id="PasDoc-Variables"></span><h3 class="summary">Variables</h3>
<table class="summary wide_list">
<tr class="list">
<td class="itemcode"><code><b><a href="vmemorymanager.html#KERNEL_PAGE_DIRECTORY">KERNEL_PAGE_DIRECTORY</a></b>: <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>;</code></td>
</tr>
<tr class="list2">
<td class="itemcode"><code><b><a href="vmemorymanager.html#PageDirectory">PageDirectory</a></b>: <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Functions and Procedures</h3>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="init"></span><code>procedure <b>init</b>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="new_page"></span><code>function <b>new_page</b>(page_number : <a href="system.html#uInt16">uint16</a>) : boolean;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="map_page"></span><code>function <b>map_page</b>(page_number : <a href="system.html#uInt16">uint16</a>; block : <a href="system.html#uInt16">uint16</a>) : boolean;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="map_page_ex"></span><code>function <b>map_page_ex</b>(page_number : <a href="system.html#uInt16">uint16</a>; block : <a href="system.html#uInt16">uint16</a>; PD : <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>) : boolean;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="new_page_at_address"></span><code>function <b>new_page_at_address</b>(address : <a href="system.html#uInt32">uint32</a>) : boolean;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="free_page"></span><code>procedure <b>free_page</b>(page_number : <a href="system.html#uInt16">uint16</a>);</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="free_page_at_address"></span><code>procedure <b>free_page_at_address</b>(address : <a href="system.html#uInt32">uint32</a>);</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="new_page_directory"></span><code>function <b>new_page_directory</b> : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="new_kernel_mapped_page_directory"></span><code>function <b>new_kernel_mapped_page_directory</b> : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="vtop"></span><code>function <b>vtop</b>(address : <a href="system.html#uInt32">uint32</a>) : <a href="system.html#uInt32">uint32</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<h3 class="detail">Types</h3>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="PPageDirEntry"></span><code><b>PPageDirEntry</b> = &circ;<a href="vmemorymanager.html#TPageDirEntry">TPageDirEntry</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="TPageDirEntry"></span><code><b>TPageDirEntry</b> = bitpacked record
Present,
Writable,
UserMode,
WriteThrough,
NotCacheable,
Accessed,
Reserved,
PageSize,
GlobalPage: Boolean;
Available: <a href="system.html#UBit3">UBit3</a>;
Address: <a href="system.html#UBit20">UBit20</a>;
end;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="TPageDirectory"></span><code><b>TPageDirectory</b> = Array[0..1023] of <a href="vmemorymanager.html#TPageDirEntry">TPageDirEntry</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="PPageDirectory"></span><code><b>PPageDirectory</b> = &circ;<a href="vmemorymanager.html#TPageDirectory">TPageDirectory</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<h3 class="detail">Variables</h3>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="KERNEL_PAGE_DIRECTORY"></span><code><b>KERNEL_PAGE_DIRECTORY</b>: <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<table class="detail wide_list">
<tr class="list">
<td class="itemcode"><span id="PageDirectory"></span><code><b>PageDirectory</b>: <a href="vmemorymanager.html#PPageDirectory">PPageDirectory</a>;</code></td>
</tr>
<tr><td colspan="1">
&nbsp;</td></tr>
</table>
<h2 class="authors">Author</h2>
<ul class="authors">
<li>Kieron Morris &lt;<a href="mailto:kjm@kieronmorris.me">kjm@kieronmorris.me</a>&gt;</li>
</ul>
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