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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="Memory management implementation"><title>os::mm - 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">☰</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 mm</a></h2><div class="sidebar-elems"><section><ul class="block"><li><a href="#reexports">Re-exports</a></li><li><a href="#modules">Modules</a></li><li><a href="#structs">Structs</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="#">mm</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/mm/mod.rs.html#1-26">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Memory management implementation</p>
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<p>SV39 page-based virtual-memory architecture for RV64 systems, and
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everything about memory management, like frame allocator, page table,
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map area and memory set, is implemented here.</p>
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<p>Every task or process has a memory_set to control its virtual memory.</p>
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</div></details><h2 id="reexports" class="small-section-header"><a href="#reexports">Re-exports</a></h2><ul class="item-table"><li><div class="item-name" id="reexport.KERNEL_SPACE"><code>pub use memory_set::<a class="struct" href="memory_set/struct.KERNEL_SPACE.html" title="struct os::mm::memory_set::KERNEL_SPACE">KERNEL_SPACE</a>;</code></div></li><li><div class="item-name" id="reexport.KERNEL_SPACE-1"><code>pub use memory_set::KERNEL_SPACE;</code></div></li></ul><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="address/index.html" title="mod os::mm::address">address</a><span title="Restricted Visibility"> 🔒</span> </div><div class="desc docblock-short">Implementation of physical and virtual address and page number.</div></li><li><div class="item-name"><a class="mod" href="frame_allocator/index.html" title="mod os::mm::frame_allocator">frame_allocator</a><span title="Restricted Visibility"> 🔒</span> </div><div class="desc docblock-short">Implementation of <a href="frame_allocator/trait.FrameAllocator.html" title="trait os::mm::frame_allocator::FrameAllocator"><code>FrameAllocator</code></a> which
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controls all the frames in the operating system.</div></li><li><div class="item-name"><a class="mod" href="heap_allocator/index.html" title="mod os::mm::heap_allocator">heap_allocator</a><span title="Restricted Visibility"> 🔒</span> </div><div class="desc docblock-short">The global allocator</div></li><li><div class="item-name"><a class="mod" href="memory_set/index.html" title="mod os::mm::memory_set">memory_set</a><span title="Restricted Visibility"> 🔒</span> </div><div class="desc docblock-short">Implementation of <a href="memory_set/struct.MapArea.html" title="struct os::mm::memory_set::MapArea"><code>MapArea</code></a> and <a href="memory_set/struct.MemorySet.html" title="struct os::mm::memory_set::MemorySet"><code>MemorySet</code></a>.</div></li><li><div class="item-name"><a class="mod" href="page_table/index.html" title="mod os::mm::page_table">page_table</a><span title="Restricted Visibility"> 🔒</span> </div><div class="desc docblock-short">Implementation of <a href="page_table/struct.PageTableEntry.html" title="struct os::mm::page_table::PageTableEntry"><code>PageTableEntry</code></a> and <a href="page_table/struct.PageTable.html" title="struct os::mm::page_table::PageTable"><code>PageTable</code></a>.</div></li></ul><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2><ul class="item-table"><li><div class="item-name"><a class="struct" href="struct.FrameTracker.html" title="struct os::mm::FrameTracker">FrameTracker</a></div><div class="desc docblock-short">manage a frame which has the same lifecycle as the tracker</div></li><li><div class="item-name"><a class="struct" href="struct.KERNEL_SPACE.html" title="struct os::mm::KERNEL_SPACE">KERNEL_SPACE</a></div><div class="desc docblock-short">a memory set instance through lazy_static! managing kernel space</div></li><li><div class="item-name"><a class="struct" href="struct.MapPermission.html" title="struct os::mm::MapPermission">MapPermission</a></div><div class="desc docblock-short">map permission corresponding to that in pte: <code>R W X U</code></div></li><li><div class="item-name"><a class="struct" href="struct.MemorySet.html" title="struct os::mm::MemorySet">MemorySet</a></div><div class="desc docblock-short">memory set structure, controls virtual-memory space</div></li><li><div class="item-name"><a class="struct" href="struct.PageTableEntry.html" title="struct os::mm::PageTableEntry">PageTableEntry</a></div><div class="desc docblock-short">page table entry structure</div></li><li><div class="item-name"><a class="struct" href="struct.PhysAddr.html" title="struct os::mm::PhysAddr">PhysAddr</a></div><div class="desc docblock-short">physical address</div></li><li><div class="item-name"><a class="struct" href="struct.PhysPageNum.html" title="struct os::mm::PhysPageNum">PhysPageNum</a></div><div class="desc docblock-short">physical page number</div></li><li><div class="item-name"><a class="struct" href="struct.VirtAddr.html" title="struct os::mm::VirtAddr">VirtAddr</a></div><div class="desc docblock-short">virtual address</div></li><li><div class="item-name"><a class="struct" href="struct.VirtPageNum.html" title="struct os::mm::VirtPageNum">VirtPageNum</a></div><div class="desc docblock-short">virtual page number</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.frame_alloc.html" title="fn os::mm::frame_alloc">frame_alloc</a></div><div class="desc docblock-short">allocate a frame</div></li><li><div class="item-name"><a class="fn" href="fn.init.html" title="fn os::mm::init">init</a></div><div class="desc docblock-short">initiate heap allocator, frame allocator and kernel space</div></li><li><div class="item-name"><a class="fn" href="fn.remap_test.html" title="fn os::mm::remap_test">remap_test</a></div><div class="desc docblock-short">Check PageTable running correctly</div></li><li><div class="item-name"><a class="fn" href="fn.translated_byte_buffer.html" title="fn os::mm::translated_byte_buffer">translated_byte_buffer</a></div><div class="desc docblock-short">translate a pointer to a mutable u8 Vec through page table</div></li><li><div class="item-name"><a class="fn" href="fn.translated_refmut.html" title="fn os::mm::translated_refmut">translated_refmut</a></div><div class="desc docblock-short">translate a generic through page table and return a mutable reference</div></li><li><div class="item-name"><a class="fn" href="fn.translated_str.html" title="fn os::mm::translated_str">translated_str</a></div><div class="desc docblock-short">translate a pointer to a mutable u8 Vec end with <code>\0</code> through page table to a <code>String</code></div></li></ul></section></div></main></body></html> |