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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"><meta name="keywords" content="rust, rustlang, rust-lang, loader"><title>os::loader - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.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">&#9776;</button><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">Module loader</a></h2><div class="sidebar-elems"><section><div class="block"><ul><li><a href="#structs">Structs</a></li><li><a href="#statics">Statics</a></li><li><a href="#functions">Functions</a></li></ul></div></section></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../os/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">loader</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../src/os/loader.rs.html#1-98">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><details class="rustdoc-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="KernelStack"><code>KernelStack</code></a> and <a href="struct.UserStack.html" title="UserStack"><code>UserStack</code></a>.</p>
</div></details><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.KernelStack.html" title="os::loader::KernelStack struct">KernelStack</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.UserStack.html" title="os::loader::UserStack struct">UserStack</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div></div><h2 id="statics" class="small-section-header"><a href="#statics">Statics</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="static" href="static.KERNEL_STACK.html" title="os::loader::KERNEL_STACK static">KERNEL_STACK</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="static" href="static.USER_STACK.html" title="os::loader::USER_STACK static">USER_STACK</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"></div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.get_base_i.html" title="os::loader::get_base_i fn">get_base_i</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="item-right docblock-short"><p>Get base address of app i.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.get_num_app.html" title="os::loader::get_num_app fn">get_num_app</a></div><div class="item-right docblock-short"><p>Get the total number of applications.</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.init_app_cx.html" title="os::loader::init_app_cx fn">init_app_cx</a></div><div class="item-right docblock-short"><p>get app info with entry and sp and save <code>TrapContext</code> in kernel stack</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.load_apps.html" title="os::loader::load_apps fn">load_apps</a></div><div class="item-right docblock-short"><p>Load nth user app at
[APP_BASE_ADDRESS + n * APP_SIZE_LIMIT, APP_BASE_ADDRESS + (n+1) * APP_SIZE_LIMIT).</p>
</div></div></div></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="os" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0-nightly (f6f9d5e73 2022-08-04)" ></div></body></html>
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