andrey/rCore-Tutorial-v3
1
0
Fork 0
mirror of https://github.com/rcore-os/rCore-Tutorial-v3.git synced 2024-11-28 20:33:35 +04:00
Code Issues Projects Releases Wiki Activity
914e4bbd59
rCore-Tutorial-v3/ch3/os/syscall/index.html
wyfcyx 914e4bbd59 deploy: ae6ae9cb0c
2023-10-15 07:27:18 +00:00

10 lines
6.7 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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="Implementation of syscalls"><title>os::syscall - 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/SourceSerif4-Bold-a2c9cd1067f8b328.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-fa3bb1812debf86c.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="1.75.0-nightly (bf9a1c8a1 2023-10-08)" data-channel="nightly" data-search-js="search-5f5ec5419eadd0c9.js" data-settings-js="settings-74424d7eec62a23e.js" ><script src="../../static.files/storage-fec3eaa3851e447d.js"></script><script defer src="../../static.files/main-c5bd66d33317d69f.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-5d8b3c7633ad77ba.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">&#9776;</button><a class="logo-container" href="../../os/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a></nav><nav class="sidebar"><a class="logo-container" href="../../os/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><h2 class="location"><a href="#">Module syscall</a></h2><div class="sidebar-elems"><section><ul class="block"><li><a href="#modules">Modules</a></li><li><a href="#constants">Constants</a></li><li><a href="#functions">Functions</a></li></ul></section></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><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" title="help" tabindex="-1"><a href="../../help.html">?</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="#">syscall</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/syscall/mod.rs.html#1-33">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>Implementation of syscalls</p>
<p>The single entry point to all system calls, <a href="fn.syscall.html" title="fn os::syscall::syscall"><code>syscall()</code></a>, is called
whenever userspace wishes to perform a system call using the <code>ecall</code>
instruction. In this case, the processor raises an ‘Environment call from
U-mode’ exception, which is handled as one of the cases in
<a href="../trap/fn.trap_handler.html" title="fn os::trap::trap_handler"><code>crate::trap::trap_handler</code></a>.</p>
<p>For clarity, each single syscall is implemented as its own function, named
<code>sys_</code> then the name of the syscall. You can find functions like this in
submodules, and you should also implement syscalls this way.</p>
</div></details><h2 id="modules" class="small-section-header"><a href="#modules">Modules</a></h2><ul class="item-table"><li><div class="item-name"><a class="mod" href="fs/index.html" title="mod os::syscall::fs">fs</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="desc docblock-short">File and filesystem-related syscalls</div></li><li><div class="item-name"><a class="mod" href="process/index.html" title="mod os::syscall::process">process</a><span title="Restricted Visibility">&nbsp;🔒</span> </div><div class="desc docblock-short">Process management syscalls</div></li></ul><h2 id="constants" class="small-section-header"><a href="#constants">Constants</a></h2><ul class="item-table"><li><div class="item-name"><a class="constant" href="constant.SYSCALL_EXIT.html" title="constant os::syscall::SYSCALL_EXIT">SYSCALL_EXIT</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li><li><div class="item-name"><a class="constant" href="constant.SYSCALL_GET_TIME.html" title="constant os::syscall::SYSCALL_GET_TIME">SYSCALL_GET_TIME</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li><li><div class="item-name"><a class="constant" href="constant.SYSCALL_WRITE.html" title="constant os::syscall::SYSCALL_WRITE">SYSCALL_WRITE</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li><li><div class="item-name"><a class="constant" href="constant.SYSCALL_YIELD.html" title="constant os::syscall::SYSCALL_YIELD">SYSCALL_YIELD</a><span title="Restricted Visibility">&nbsp;🔒</span> </div></li></ul><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2><ul class="item-table"><li><div class="item-name"><a class="fn" href="fn.syscall.html" title="fn os::syscall::syscall">syscall</a></div><div class="desc docblock-short">handle syscall exception with <code>syscall_id</code> and other arguments</div></li></ul></section></div></main></body></html>
Reference in New Issue View Git Blame Copy Permalink