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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Loading user applications into memory"><title>os::loader - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-4e54bb2b497cc83f.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="os" data-themes="" data-resource-suffix="" data-rustdoc-version="1.77.0-nightly (6ae4cfbbb 2024-01-17)" data-channel="nightly" data-search-js="search-dd67cee4cfa65049.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../static.files/main-0b2e2def73e61cbe.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-04d5337699b92874.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../os/index.html">os</a><span class="version">0.1.0</span></h2></div><h2 class="location"><a href="#">Module loader</a></h2><div class="sidebar-elems"><section><ul class="block"><li><a href="#structs">Structs</a></li><li><a href="#statics">Statics</a></li><li><a href="#functions">Functions</a></li></ul></section><h2><a href="../index.html">In crate os</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../os/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">loader</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/os/loader.rs.html#1-98">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Loading user applications into memory</p>
<p>For chapter 3, user applications are simply part of the data included in the
kernel binary, so we only need to copy them to the space allocated for each
app to load them. We also allocate fixed spaces for each task’s
<a href="struct.KernelStack.html" title="struct os::loader::KernelStack"><code>KernelStack</code></a> and <a href="struct.UserStack.html" title="struct os::loader::UserStack"><code>UserStack</code></a>.</p>
</div></details><h2 id="structs" class="section-header"><a href="#structs">Structs</a></h2><ul class="item-table"><li><div class="item-name"><a class="struct" href="struct.KernelStack.html" title="struct os::loader::KernelStack">KernelStack</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li><li><div class="item-name"><a class="struct" href="struct.UserStack.html" title="struct os::loader::UserStack">UserStack</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li></ul><h2 id="statics" class="section-header"><a href="#statics">Statics</a></h2><ul class="item-table"><li><div class="item-name"><a class="static" href="static.KERNEL_STACK.html" title="static os::loader::KERNEL_STACK">KERNEL_STACK</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li><li><div class="item-name"><a class="static" href="static.USER_STACK.html" title="static os::loader::USER_STACK">USER_STACK</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li></ul><h2 id="functions" class="section-header"><a href="#functions">Functions</a></h2><ul class="item-table"><li><div class="item-name"><a class="fn" href="fn.get_base_i.html" title="fn os::loader::get_base_i">get_base_i</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="desc docblock-short">Get base address of app i.</div></li><li><div class="item-name"><a class="fn" href="fn.get_num_app.html" title="fn os::loader::get_num_app">get_num_app</a></div><div class="desc docblock-short">Get the total number of applications.</div></li><li><div class="item-name"><a class="fn" href="fn.init_app_cx.html" title="fn os::loader::init_app_cx">init_app_cx</a></div><div class="desc docblock-short">get app info with entry and sp and save <code>TrapContext</code> in kernel stack</div></li><li><div class="item-name"><a class="fn" href="fn.load_apps.html" title="fn os::loader::load_apps">load_apps</a></div><div class="desc docblock-short">Load nth user app at
[APP_BASE_ADDRESS + n * APP_SIZE_LIMIT, APP_BASE_ADDRESS + (n+1) * APP_SIZE_LIMIT).</div></li></ul></section></div></main></body></html>
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