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ch1/os/console/fn.print.html
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<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 fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div> <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 fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div>
</a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="../index.html">os</a>::<wbr><a href="index.html">console</a></h2><div id="sidebar-vars" data-name="print" data-ty="fn" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> </a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="../index.html">os</a>::<wbr><a href="index.html">console</a></h2><div id="sidebar-vars" data-name="print" data-ty="fn" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div>
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<h1 class="fqn"><span class="in-band">Function <a href="../index.html">os</a>::<wbr><a href="index.html">console</a>::<wbr><a class="fn" href="#">print</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/console.rs.html#15-17" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub fn print(args: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>&lt;'_&gt;)</code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> <h1 class="fqn"><span class="in-band">Function <a href="../index.html">os</a>::<wbr><a href="index.html">console</a>::<wbr><a class="fn" href="#">print</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/console.rs.html#17-19" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub fn print(args: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>&lt;'_&gt;)</code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div>
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ch1/os/console/index.html
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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="API documentation for the Rust `console` mod in crate `os`."><meta name="keywords" content="rust, rustlang, rust-lang, console"><title>os::console - 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 src="../../crates.js"></script><script defer src="../../main.js"></script> <!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="SBI console driver, for text output"><meta name="keywords" content="rust, rustlang, rust-lang, console"><title>os::console - 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 src="../../crates.js"></script><script defer src="../../main.js"></script>
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</a><h2 class="location"><a href="#">Module console</a></h2><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#functions">Functions</a></li></ul></div><div id="sidebar-vars" data-name="console" data-ty="mod" data-relpath="./"></div><script defer src="./sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> </a><h2 class="location"><a href="#">Module console</a></h2><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#functions">Functions</a></li></ul></div><div id="sidebar-vars" data-name="console" data-ty="mod" data-relpath="./"></div><script defer src="./sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div>
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<h1 class="fqn"><span class="in-band">Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">console</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/console.rs.html#1-31" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2> <h1 class="fqn"><span class="in-band">Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">console</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/console.rs.html#1-35" title="goto source code">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>SBI console driver, for text output</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.Stdout.html" title="os::console::Stdout struct">Stdout</a></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="struct" href="struct.Stdout.html" title="os::console::Stdout struct">Stdout</a></div><div class="item-right docblock-short"></div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2>
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ch1/os/console/struct.Stdout.html
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<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 struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div> <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 struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div>
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<h1 class="fqn"><span class="in-band">Struct <a href="../index.html">os</a>::<wbr><a href="index.html">console</a>::<wbr><a class="struct" href="#">Stdout</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/console.rs.html#4" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust struct"><code>struct Stdout;</code></pre></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Write" class="impl has-srclink"><div class="rightside"><a class="srclink" href="../../src/os/console.rs.html#6-13" title="goto source code">source</a></div><a href="#impl-Write" class="anchor"></a><h3 class="code-header in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html" title="trait core::fmt::Write">Write</a> for <a class="struct" href="struct.Stdout.html" title="struct os::console::Stdout">Stdout</a></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_str" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="../../src/os/console.rs.html#7-12" title="goto source code">source</a></div><a href="#method.write_str" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#tymethod.write_str" class="fnname">write_str</a>(&amp;mut self, s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.str.html">str</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></div></summary><div class='docblock'><p>Writes a string slice into this writer, returning whether the write <h1 class="fqn"><span class="in-band">Struct <a href="../index.html">os</a>::<wbr><a href="index.html">console</a>::<wbr><a class="struct" href="#">Stdout</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/console.rs.html#6" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust struct"><code>struct Stdout;</code></pre></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><div id="impl-Write" class="impl has-srclink"><div class="rightside"><a class="srclink" href="../../src/os/console.rs.html#8-15" title="goto source code">source</a></div><a href="#impl-Write" class="anchor"></a><h3 class="code-header in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html" title="trait core::fmt::Write">Write</a> for <a class="struct" href="struct.Stdout.html" title="struct os::console::Stdout">Stdout</a></h3></div></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_str" class="method trait-impl has-srclink"><div class="rightside"><a class="srclink" href="../../src/os/console.rs.html#9-14" title="goto source code">source</a></div><a href="#method.write_str" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#tymethod.write_str" class="fnname">write_str</a>(&amp;mut self, s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.str.html">str</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></div></summary><div class='docblock'><p>Writes a string slice into this writer, returning whether the write
succeeded. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#tymethod.write_str">Read more</a></p> succeeded. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#tymethod.write_str">Read more</a></p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_char" class="method trait-impl has-srclink"><div class="rightside"><span class="since" title="Stable since Rust version 1.1.0">1.1.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/fmt/mod.rs.html#162" title="goto source code">source</a></div><a href="#method.write_char" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_char" class="fnname">write_char</a>(&amp;mut self, c: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.char.html">char</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>&gt;</h4></div></summary><div class='docblock'><p>Writes a <a href="https://doc.rust-lang.org/nightly/core/primitive.char.html" title="char"><code>char</code></a> into this writer, returning whether the write succeeded. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_char">Read more</a></p> </div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_char" class="method trait-impl has-srclink"><div class="rightside"><span class="since" title="Stable since Rust version 1.1.0">1.1.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/fmt/mod.rs.html#162" title="goto source code">source</a></div><a href="#method.write_char" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_char" class="fnname">write_char</a>(&amp;mut self, c: <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.char.html">char</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>&gt;</h4></div></summary><div class='docblock'><p>Writes a <a href="https://doc.rust-lang.org/nightly/core/primitive.char.html" title="char"><code>char</code></a> into this writer, returning whether the write succeeded. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_char">Read more</a></p>
</div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_fmt" class="method trait-impl has-srclink"><div class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/fmt/mod.rs.html#185" title="goto source code">source</a></div><a href="#method.write_fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_fmt" class="fnname">write_fmt</a>(&amp;mut self, args: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>&gt;</h4></div></summary><div class='docblock'><p>Glue for usage of the <a href="https://doc.rust-lang.org/nightly/core/macro.write.html" title="write!"><code>write!</code></a> macro with implementors of this trait. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_fmt">Read more</a></p> </div></details><details class="rustdoc-toggle method-toggle" open><summary><div id="method.write_fmt" class="method trait-impl has-srclink"><div class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/fmt/mod.rs.html#185" title="goto source code">source</a></div><a href="#method.write_fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_fmt" class="fnname">write_fmt</a>(&amp;mut self, args: <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Arguments.html" title="struct core::fmt::Arguments">Arguments</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>&gt;</h4></div></summary><div class='docblock'><p>Glue for usage of the <a href="https://doc.rust-lang.org/nightly/core/macro.write.html" title="write!"><code>write!</code></a> macro with implementors of this trait. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Write.html#method.write_fmt">Read more</a></p>

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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="API documentation for the Rust `clear_bss` fn in crate `os`."><meta name="keywords" content="rust, rustlang, rust-lang, clear_bss"><title>clear_bss in os - 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 src="../crates.js"></script><script defer src="../main.js"></script> <!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="clear BSS segment"><meta name="keywords" content="rust, rustlang, rust-lang, clear_bss"><title>clear_bss in os - 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 src="../crates.js"></script><script defer src="../main.js"></script>
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<h1 class="fqn"><span class="in-band">Function <a href="index.html">os</a>::<wbr><a class="fn" href="#">clear_bss</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/main.rs.html#14-20" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub(crate) fn clear_bss()</code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> <h1 class="fqn"><span class="in-band">Function <a href="index.html">os</a>::<wbr><a class="fn" href="#">clear_bss</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/main.rs.html#26-32" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub fn clear_bss()</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>clear BSS segment</p>
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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="API documentation for the Rust `rust_main` fn in crate `os`."><meta name="keywords" content="rust, rustlang, rust-lang, rust_main"><title>rust_main in os - 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 src="../crates.js"></script><script defer src="../main.js"></script> <!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="the rust entry-point of os"><meta name="keywords" content="rust, rustlang, rust-lang, rust_main"><title>rust_main in os - 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 src="../crates.js"></script><script defer src="../main.js"></script>
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</a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="index.html">os</a></h2><div id="sidebar-vars" data-name="rust_main" data-ty="fn" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> </a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="index.html">os</a></h2><div id="sidebar-vars" data-name="rust_main" data-ty="fn" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div>
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<h1 class="fqn"><span class="in-band">Function <a href="index.html">os</a>::<wbr><a class="fn" href="#">rust_main</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/main.rs.html#23-47" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>#[no_mangle] <h1 class="fqn"><span class="in-band">Function <a href="index.html">os</a>::<wbr><a class="fn" href="#">rust_main</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/main.rs.html#36-60" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>#[no_mangle]
pub fn rust_main() -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.never.html">!</a></code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> pub fn rust_main() -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.never.html">!</a></code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>the rust entry-point of os</p>
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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="API documentation for the Rust `os` crate."><meta name="keywords" content="rust, rustlang, rust-lang, os"><title>os - 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 src="../crates.js"></script><script defer src="../main.js"></script> <!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="The main module and entrypoint"><meta name="keywords" content="rust, rustlang, rust-lang, os"><title>os - 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 src="../crates.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 crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../os/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div> <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 crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><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="#">Crate os</a></h2><div class="block version"><div class="narrow-helper"></div><p>Version 0.1.0</p></div><div class="sidebar-elems"><a id="all-types" href="all.html"><p>See all os's items</p></a><div class="block items"><ul><li><a href="#modules">Modules</a></li><li><a href="#macros">Macros</a></li><li><a href="#functions">Functions</a></li></ul></div><div id="sidebar-vars" data-name="os" data-ty="mod" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> </a><h2 class="location"><a href="#">Crate os</a></h2><div class="block version"><div class="narrow-helper"></div><p>Version 0.1.0</p></div><div class="sidebar-elems"><a id="all-types" href="all.html"><p>See all os's items</p></a><div class="block items"><ul><li><a href="#modules">Modules</a></li><li><a href="#macros">Macros</a></li><li><a href="#functions">Functions</a></li></ul></div><div id="sidebar-vars" data-name="os" data-ty="mod" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div>
<input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"> <input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="main-heading">
<h1 class="fqn"><span class="in-band">Crate <a class="mod" href="#">os</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/main.rs.html#1-47" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2> <h1 class="fqn"><span class="in-band">Crate <a class="mod" href="#">os</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/main.rs.html#1-60" title="goto source code">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>The main module and entrypoint</p>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="mod" href="console/index.html" title="os::console mod">console</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="lang_items/index.html" title="os::lang_items mod">lang_items</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="sbi/index.html" title="os::sbi mod">sbi</a></div><div class="item-right docblock-short"></div></div></div><h2 id="macros" class="small-section-header"><a href="#macros">Macros</a></h2> <p>The operating system and app also starts in this module. Kernel code starts
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="macro" href="macro.print.html" title="os::print macro">print</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="macro" href="macro.println.html" title="os::println macro">println</a></div><div class="item-right docblock-short"></div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2> executing from <code>entry.asm</code>, after which <a href="fn.rust_main.html" title="rust_main()"><code>rust_main()</code></a> is called to
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.clear_bss.html" title="os::clear_bss fn">clear_bss</a></div><div class="item-right docblock-short"></div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.rust_main.html" title="os::rust_main fn">rust_main</a></div><div class="item-right docblock-short"></div></div></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> initialize various pieces of functionality <a href="fn.clear_bss.html" title="clear_bss()"><code>clear_bss()</code></a>. (See its source code for
details.)</p>
<p>We then call <a href="macro.println.html" title="println!"><code>println!</code></a> to display <code>Hello, world!</code>.</p>
</div></details><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="mod" href="console/index.html" title="os::console mod">console</a></div><div class="item-right docblock-short"><p>SBI console driver, for text output</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="lang_items/index.html" title="os::lang_items mod">lang_items</a></div><div class="item-right docblock-short"><p>The panic handler</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="mod" href="sbi/index.html" title="os::sbi mod">sbi</a></div><div class="item-right docblock-short"></div></div></div><h2 id="macros" class="small-section-header"><a href="#macros">Macros</a></h2>
<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="macro" href="macro.print.html" title="os::print macro">print</a></div><div class="item-right docblock-short"><p>print string macro</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="macro" href="macro.println.html" title="os::println macro">println</a></div><div class="item-right docblock-short"><p>println string macro</p>
</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.clear_bss.html" title="os::clear_bss fn">clear_bss</a></div><div class="item-right docblock-short"><p>clear BSS segment</p>
</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.rust_main.html" title="os::rust_main fn">rust_main</a></div><div class="item-right docblock-short"><p>the rust entry-point of os</p>
</div></div></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div>
</body></html> </body></html>

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<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 fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div> <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 fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">&#9776;</div><a class="sidebar-logo" href="../../os/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div>
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<h1 class="fqn"><span class="in-band">Function <a href="../index.html">os</a>::<wbr><a href="index.html">lang_items</a>::<wbr><a class="fn" href="#">panic</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/lang_items.rs.html#5-17" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>fn panic(info: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/core/panic/panic_info/struct.PanicInfo.html" title="struct core::panic::panic_info::PanicInfo">PanicInfo</a>&lt;'_&gt;) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.never.html">!</a></code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> <h1 class="fqn"><span class="in-band">Function <a href="../index.html">os</a>::<wbr><a href="index.html">lang_items</a>::<wbr><a class="fn" href="#">panic</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/lang_items.rs.html#7-19" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>fn panic(info: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/core/panic/panic_info/struct.PanicInfo.html" title="struct core::panic::panic_info::PanicInfo">PanicInfo</a>&lt;'_&gt;) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/core/primitive.never.html">!</a></code></pre></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div>
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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="API documentation for the Rust `lang_items` mod in crate `os`."><meta name="keywords" content="rust, rustlang, rust-lang, lang_items"><title>os::lang_items - 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 src="../../crates.js"></script><script defer src="../../main.js"></script> <!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="The panic handler"><meta name="keywords" content="rust, rustlang, rust-lang, lang_items"><title>os::lang_items - 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 src="../../crates.js"></script><script defer src="../../main.js"></script>
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<h1 class="fqn"><span class="in-band">Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">lang_items</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/lang_items.rs.html#1-17" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2> <h1 class="fqn"><span class="in-band">Module <a href="../index.html">os</a>::<wbr><a class="mod" href="#">lang_items</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/lang_items.rs.html#1-19" title="goto source code">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>The panic handler</p>
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<div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.panic.html" title="os::lang_items::panic fn">panic</a></div><div class="item-right docblock-short"></div></div></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div> <div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.panic.html" title="os::lang_items::panic fn">panic</a></div><div class="item-right docblock-short"></div></div></div></section><section id="search" class="content hidden"></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="1.60.0-nightly (9ad5d82f8 2022-01-18)" ></div>
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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="API documentation for the Rust `print` macro in crate `os`."><meta name="keywords" content="rust, rustlang, rust-lang, print"><title>print in os - 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 src="../crates.js"></script><script defer src="../main.js"></script> <!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="print string macro"><meta name="keywords" content="rust, rustlang, rust-lang, print"><title>print in os - 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 src="../crates.js"></script><script defer src="../main.js"></script>
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</a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="index.html">os</a></h2><div id="sidebar-vars" data-name="print" data-ty="macro" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div> </a><div class="sidebar-elems"><h2 class="location">Other items in<br><a href="index.html">os</a></h2><div id="sidebar-vars" data-name="print" data-ty="macro" data-relpath=""></div><script defer src="sidebar-items.js"></script></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"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><div>
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<h1 class="fqn"><span class="in-band">Macro <a href="index.html">os</a>::<wbr><a class="macro" href="#">print</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/console.rs.html#20-24" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">print</span> { <h1 class="fqn"><span class="in-band">Macro <a href="index.html">os</a>::<wbr><a class="macro" href="#">print</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/console.rs.html#23-27" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">print</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { ... }; (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { ... };
}</code></pre></div> }</code></pre></div>
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<h1 class="fqn"><span class="in-band">Macro <a href="index.html">os</a>::<wbr><a class="macro" href="#">println</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/console.rs.html#27-31" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">println</span> { <h1 class="fqn"><span class="in-band">Macro <a href="index.html">os</a>::<wbr><a class="macro" href="#">println</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/console.rs.html#31-35" title="goto source code">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">println</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { ... }; (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { ... };
}</code></pre></div> }</code></pre></div>
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2
ch1/os/sidebar-items.js
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@ -1 +1 @@
initSidebarItems({"fn":[["clear_bss",""],["rust_main",""]],"macro":[["print",""],["println",""]],"mod":[["console",""],["lang_items",""],["sbi",""]]}); initSidebarItems({"fn":[["clear_bss","clear BSS segment"],["rust_main","the rust entry-point of os"]],"macro":[["print","print string macro"],["println","println string macro"]],"mod":[["console","SBI console driver, for text output"],["lang_items","The panic handler"],["sbi",""]]});

2
ch1/search-index.js
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@ -1,4 +1,4 @@
var searchIndex = JSON.parse('{\ var searchIndex = JSON.parse('{\
"os":{"doc":"","t":[5,0,0,14,14,5,0,3,11,11,11,11,5,11,11,11,11,5,17,17,17,17,17,17,17,17,17,5,5,5,5],"n":["clear_bss","console","lang_items","print","println","rust_main","sbi","Stdout","borrow","borrow_mut","from","into","print","try_from","try_into","type_id","write_str","panic","SBI_CLEAR_IPI","SBI_CONSOLE_GETCHAR","SBI_CONSOLE_PUTCHAR","SBI_REMOTE_FENCE_I","SBI_REMOTE_SFENCE_VMA","SBI_REMOTE_SFENCE_VMA_ASID","SBI_SEND_IPI","SBI_SET_TIMER","SBI_SHUTDOWN","console_getchar","console_putchar","sbi_call","shutdown"],"q":["os","","","","","","","os::console","","","","","","","","","","os::lang_items","os::sbi","","","","","","","","","","","",""],"d":["","","","","","","","","","","","","","","","","","","","","","","","","","","","use sbi call to getchar from console (qemu uart handler)","use sbi call to putchar in console (qemu uart handler)","","use sbi call to shutdown the kernel"],"i":[0,0,0,0,0,0,0,0,1,1,1,1,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"f":[[[]],null,null,null,null,[[],["never",15]],null,null,[[]],[[]],[[]],[[]],[[["arguments",3]]],[[],["result",4]],[[],["result",4]],[[],["typeid",3]],[[["str",15]],["result",6]],[[["panicinfo",3]],["never",15]],null,null,null,null,null,null,null,null,null,[[],["usize",15]],[[["usize",15]]],[[["usize",15],["usize",15],["usize",15],["usize",15]],["usize",15]],[[],["never",15]]],"p":[[3,"Stdout"]]}\ "os":{"doc":"The main module and entrypoint","t":[5,0,0,14,14,5,0,3,11,11,11,11,5,11,11,11,11,5,17,17,17,17,17,17,17,17,17,5,5,5,5],"n":["clear_bss","console","lang_items","print","println","rust_main","sbi","Stdout","borrow","borrow_mut","from","into","print","try_from","try_into","type_id","write_str","panic","SBI_CLEAR_IPI","SBI_CONSOLE_GETCHAR","SBI_CONSOLE_PUTCHAR","SBI_REMOTE_FENCE_I","SBI_REMOTE_SFENCE_VMA","SBI_REMOTE_SFENCE_VMA_ASID","SBI_SEND_IPI","SBI_SET_TIMER","SBI_SHUTDOWN","console_getchar","console_putchar","sbi_call","shutdown"],"q":["os","","","","","","","os::console","","","","","","","","","","os::lang_items","os::sbi","","","","","","","","","","","",""],"d":["clear BSS segment","SBI console driver, for text output","The panic handler","print string macro","println string macro","the rust entry-point of os","","","","","","","","","","","","","","","","","","","","","","use sbi call to getchar from console (qemu uart handler)","use sbi call to putchar in console (qemu uart handler)","","use sbi call to shutdown the kernel"],"i":[0,0,0,0,0,0,0,0,1,1,1,1,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"f":[[[]],null,null,null,null,[[],["never",15]],null,null,[[]],[[]],[[]],[[]],[[["arguments",3]]],[[],["result",4]],[[],["result",4]],[[],["typeid",3]],[[["str",15]],["result",6]],[[["panicinfo",3]],["never",15]],null,null,null,null,null,null,null,null,null,[[],["usize",15]],[[["usize",15]]],[[["usize",15],["usize",15],["usize",15],["usize",15]],["usize",15]],[[],["never",15]]],"p":[[3,"Stdout"]]}\
}'); }');
if (window.initSearch) {window.initSearch(searchIndex)}; if (window.initSearch) {window.initSearch(searchIndex)};

10
ch1/src/os/console.rs.html
View File

@ -32,7 +32,13 @@
<span id="29">29</span> <span id="29">29</span>
<span id="30">30</span> <span id="30">30</span>
<span id="31">31</span> <span id="31">31</span>
</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::sbi::console_putchar</span>; <span id="32">32</span>
<span id="33">33</span>
<span id="34">34</span>
<span id="35">35</span>
</pre><pre class="rust"><code><span class="doccomment">//! SBI console driver, for text output</span>
<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::sbi::console_putchar</span>;
<span class="kw">use</span> <span class="ident">core::fmt</span>::{<span class="self">self</span>, <span class="ident">Write</span>}; <span class="kw">use</span> <span class="ident">core::fmt</span>::{<span class="self">self</span>, <span class="ident">Write</span>};
<span class="kw">struct</span> <span class="ident">Stdout</span>; <span class="kw">struct</span> <span class="ident">Stdout</span>;
@ -50,6 +56,7 @@
<span class="ident">Stdout</span>.<span class="ident">write_fmt</span>(<span class="ident">args</span>).<span class="ident">unwrap</span>(); <span class="ident">Stdout</span>.<span class="ident">write_fmt</span>(<span class="ident">args</span>).<span class="ident">unwrap</span>();
} }
<span class="doccomment">/// print string macro</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span> <span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="macro">macro_rules!</span> <span class="ident">print</span> { <span class="macro">macro_rules!</span> <span class="ident">print</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; {
@ -57,6 +64,7 @@
} }
} }
<span class="doccomment">/// println string macro</span>
<span class="attribute">#[<span class="ident">macro_export</span>]</span> <span class="attribute">#[<span class="ident">macro_export</span>]</span>
<span class="macro">macro_rules!</span> <span class="ident">println</span> { <span class="macro">macro_rules!</span> <span class="ident">println</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; { (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">fmt</span>: <span class="ident">literal</span> $(, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">arg</span>: <span class="ident">tt</span>)<span class="op">+</span>)<span class="question-mark">?</span>) =&gt; {

10
ch1/src/os/lang_items.rs.html
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@ -18,20 +18,24 @@
<span id="15">15</span> <span id="15">15</span>
<span id="16">16</span> <span id="16">16</span>
<span id="17">17</span> <span id="17">17</span>
</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::sbi::shutdown</span>; <span id="18">18</span>
<span id="19">19</span>
</pre><pre class="rust"><code><span class="doccomment">//! The panic handler</span>
<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::sbi::shutdown</span>;
<span class="kw">use</span> <span class="ident">core::panic::PanicInfo</span>; <span class="kw">use</span> <span class="ident">core::panic::PanicInfo</span>;
<span class="attribute">#[<span class="ident">panic_handler</span>]</span> <span class="attribute">#[<span class="ident">panic_handler</span>]</span>
<span class="kw">fn</span> <span class="ident">panic</span>(<span class="ident">info</span>: <span class="kw-2">&amp;</span><span class="ident">PanicInfo</span>) -&gt; <span class="op">!</span> { <span class="kw">fn</span> <span class="ident">panic</span>(<span class="ident">info</span>: <span class="kw-2">&amp;</span><span class="ident">PanicInfo</span>) -&gt; <span class="op">!</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">location</span>) <span class="op">=</span> <span class="ident">info</span>.<span class="ident">location</span>() { <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">location</span>) <span class="op">=</span> <span class="ident">info</span>.<span class="ident">location</span>() {
<span class="macro">println!</span>( <span class="macro">println!</span>(
<span class="string">&quot;Panicked at {}:{} {}&quot;</span>, <span class="string">&quot;[kernel] Panicked at {}:{} {}&quot;</span>,
<span class="ident">location</span>.<span class="ident">file</span>(), <span class="ident">location</span>.<span class="ident">file</span>(),
<span class="ident">location</span>.<span class="ident">line</span>(), <span class="ident">location</span>.<span class="ident">line</span>(),
<span class="ident">info</span>.<span class="ident">message</span>().<span class="ident">unwrap</span>() <span class="ident">info</span>.<span class="ident">message</span>().<span class="ident">unwrap</span>()
); );
} <span class="kw">else</span> { } <span class="kw">else</span> {
<span class="macro">println!</span>(<span class="string">&quot;Panicked: {}&quot;</span>, <span class="ident">info</span>.<span class="ident">message</span>().<span class="ident">unwrap</span>()); <span class="macro">println!</span>(<span class="string">&quot;[kernel] Panicked: {}&quot;</span>, <span class="ident">info</span>.<span class="ident">message</span>().<span class="ident">unwrap</span>());
} }
<span class="ident">shutdown</span>() <span class="ident">shutdown</span>()
} }

50
ch1/src/os/main.rs.html
View File

@ -48,7 +48,31 @@
<span id="45">45</span> <span id="45">45</span>
<span id="46">46</span> <span id="46">46</span>
<span id="47">47</span> <span id="47">47</span>
</pre><pre class="rust"><code><span class="attribute">#![<span class="ident">no_std</span>]</span> <span id="48">48</span>
<span id="49">49</span>
<span id="50">50</span>
<span id="51">51</span>
<span id="52">52</span>
<span id="53">53</span>
<span id="54">54</span>
<span id="55">55</span>
<span id="56">56</span>
<span id="57">57</span>
<span id="58">58</span>
<span id="59">59</span>
<span id="60">60</span>
</pre><pre class="rust"><code><span class="doccomment">//! The main module and entrypoint</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! The operating system and app also starts in this module. Kernel code starts</span>
<span class="doccomment">//! executing from `entry.asm`, after which [`rust_main()`] is called to</span>
<span class="doccomment">//! initialize various pieces of functionality [`clear_bss()`]. (See its source code for</span>
<span class="doccomment">//! details.)</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! We then call [`println!`] to display `Hello, world!`.</span>
<span class="attribute">#![<span class="ident">deny</span>(<span class="ident">missing_docs</span>)]</span>
<span class="attribute">#![<span class="ident">deny</span>(<span class="ident">warnings</span>)]</span>
<span class="attribute">#![<span class="ident">no_std</span>]</span>
<span class="attribute">#![<span class="ident">no_main</span>]</span> <span class="attribute">#![<span class="ident">no_main</span>]</span>
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">panic_info_message</span>)]</span> <span class="attribute">#![<span class="ident">feature</span>(<span class="ident">panic_info_message</span>)]</span>
@ -61,7 +85,8 @@
<span class="macro">global_asm!</span>(<span class="macro">include_str!</span>(<span class="string">&quot;entry.asm&quot;</span>)); <span class="macro">global_asm!</span>(<span class="macro">include_str!</span>(<span class="string">&quot;entry.asm&quot;</span>));
<span class="kw">fn</span> <span class="ident">clear_bss</span>() { <span class="doccomment">/// clear BSS segment</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear_bss</span>() {
<span class="kw">extern</span> <span class="string">&quot;C&quot;</span> { <span class="kw">extern</span> <span class="string">&quot;C&quot;</span> {
<span class="kw">fn</span> <span class="ident">sbss</span>(); <span class="kw">fn</span> <span class="ident">sbss</span>();
<span class="kw">fn</span> <span class="ident">ebss</span>(); <span class="kw">fn</span> <span class="ident">ebss</span>();
@ -69,19 +94,20 @@
(<span class="ident">sbss</span> <span class="kw">as</span> <span class="ident">usize</span>..<span class="ident">ebss</span> <span class="kw">as</span> <span class="ident">usize</span>).<span class="ident">for_each</span>(<span class="op">|</span><span class="ident">a</span><span class="op">|</span> <span class="kw">unsafe</span> { (<span class="ident">a</span> <span class="kw">as</span> <span class="kw-2">*mut</span> <span class="ident">u8</span>).<span class="ident">write_volatile</span>(<span class="number">0</span>) }); (<span class="ident">sbss</span> <span class="kw">as</span> <span class="ident">usize</span>..<span class="ident">ebss</span> <span class="kw">as</span> <span class="ident">usize</span>).<span class="ident">for_each</span>(<span class="op">|</span><span class="ident">a</span><span class="op">|</span> <span class="kw">unsafe</span> { (<span class="ident">a</span> <span class="kw">as</span> <span class="kw-2">*mut</span> <span class="ident">u8</span>).<span class="ident">write_volatile</span>(<span class="number">0</span>) });
} }
<span class="doccomment">/// the rust entry-point of os</span>
<span class="attribute">#[<span class="ident">no_mangle</span>]</span> <span class="attribute">#[<span class="ident">no_mangle</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">rust_main</span>() -&gt; <span class="op">!</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">rust_main</span>() -&gt; <span class="op">!</span> {
<span class="kw">extern</span> <span class="string">&quot;C&quot;</span> { <span class="kw">extern</span> <span class="string">&quot;C&quot;</span> {
<span class="kw">fn</span> <span class="ident">stext</span>(); <span class="kw">fn</span> <span class="ident">stext</span>(); <span class="comment">// begin addr of text segment</span>
<span class="kw">fn</span> <span class="ident">etext</span>(); <span class="kw">fn</span> <span class="ident">etext</span>(); <span class="comment">// end addr of text segment</span>
<span class="kw">fn</span> <span class="ident">srodata</span>(); <span class="kw">fn</span> <span class="ident">srodata</span>(); <span class="comment">// start addr of Read-Only data segment</span>
<span class="kw">fn</span> <span class="ident">erodata</span>(); <span class="kw">fn</span> <span class="ident">erodata</span>(); <span class="comment">// end addr of Read-Only data ssegment</span>
<span class="kw">fn</span> <span class="ident">sdata</span>(); <span class="kw">fn</span> <span class="ident">sdata</span>(); <span class="comment">// start addr of data segment</span>
<span class="kw">fn</span> <span class="ident">edata</span>(); <span class="kw">fn</span> <span class="ident">edata</span>(); <span class="comment">// end addr of data segment</span>
<span class="kw">fn</span> <span class="ident">sbss</span>(); <span class="kw">fn</span> <span class="ident">sbss</span>(); <span class="comment">// start addr of BSS segment</span>
<span class="kw">fn</span> <span class="ident">ebss</span>(); <span class="kw">fn</span> <span class="ident">ebss</span>(); <span class="comment">// end addr of BSS segment</span>
<span class="kw">fn</span> <span class="ident">boot_stack</span>(); <span class="kw">fn</span> <span class="ident">boot_stack</span>(); <span class="comment">// stack bottom</span>
<span class="kw">fn</span> <span class="ident">boot_stack_top</span>(); <span class="kw">fn</span> <span class="ident">boot_stack_top</span>(); <span class="comment">// stack top</span>
} }
<span class="ident">clear_bss</span>(); <span class="ident">clear_bss</span>();
<span class="macro">println!</span>(<span class="string">&quot;Hello, world!&quot;</span>); <span class="macro">println!</span>(<span class="string">&quot;Hello, world!&quot;</span>);