{"id":39,"date":"2024-03-09T14:41:20","date_gmt":"2024-03-09T06:41:20","guid":{"rendered":"http:\/\/104.46.213.183\/?p=39"},"modified":"2024-03-09T14:41:20","modified_gmt":"2024-03-09T06:41:20","slug":"rcore%e7%9a%84%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.yewpo.top\/index.php\/39\/","title":{"rendered":"rCore\u7684\u5185\u5b58\u7ba1\u7406"},"content":{"rendered":"<h1>rCore\u7684\u5185\u5b58\u7ba1\u7406<\/h1>\n<blockquote>\n<p>\u5148\u6765\u4e00\u70b9<code>rust<\/code>\u76f8\u5173\u3002<\/p>\n<p><strong><code>ref<\/code>\u5173\u952e\u5b57<\/strong><\/p>\n<p>\u8d4b\u503c\u8bed\u53e5\u4e2d\u5de6\u8fb9\u7684<code>ref<\/code>\u5173\u952e\u5b57\u7b49\u4ef7\u4e8e\u53f3\u8fb9\u7684<code>&amp;<\/code>\u7b26\u53f7\u3002<\/p>\n<pre><code class=\"language-rust\">let c = 'Q';\nlet ref ref_c1 = c;\nlet ref_c2 = &c;<\/code><\/pre>\n<p>\u518d\u548c<code>mut<\/code>\u7ed3\u5408\u53d8\u6210\u53ef\u5f15\u7528\u53d8\u91cf\u3002<\/p>\n<pre><code class=\"language-rust\">let c = 1;\nlet ref mut ref_c1 = c;\n*c = 2;<\/code><\/pre>\n<p><strong><code>iter()<\/code>vs<code>iter_mut()<\/code>vs<code>into_iter()<\/code><\/strong><\/p>\n<ul>\n<li><code>iter()<\/code>\uff1a\u501f\u7528\u8fed\u4ee3\u5668\u3002<\/li>\n<li><code>iter_mut()<\/code>\uff1a\u501f\u7528\u53ef\u53d8\u8fed\u4ee3\u5668\u3002<\/li>\n<li><code>into_iter()<\/code>\uff1a\u83b7\u53d6\u8fed\u4ee3\u5668\u3002<\/li>\n<\/ul>\n<p><strong><code>rust<\/code>\u667a\u80fd\u6307\u9488\/\u5bb9\u5668\u4ee5\u53ca\u5176\u4ed6\u7c7b\u578b\u7684\u5185\u5b58\u5e03\u5c40<\/strong><\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240223191657122.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240223191657122.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240223191657122\" \/><\/div><\/p>\n<p><strong><code>rust<\/code>\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/strong><\/p>\n<p>\u4f7f\u7528<code>{:?}<\/code>\u548c<code>{:#?}<\/code>\u8fdb\u884c\u4f18\u7f8e\u5730\u8f93\u51fa\uff0c\u524d\u8005\u662f\u884c\u8f93\u51fa\uff0c\u540e\u8005\u662f\u5217\u8f93\u51fa\u3002<\/p>\n<p>\u5b57\u7b26\u4e32\u586b\u5145\u65b9\u6cd5\u5982\u4e0b\uff08\u9ed8\u8ba4\u5de6\u5bf9\u9f50\uff09\uff1a<\/p>\n<pre><code class=\"language-rust\">fn main() {\n    \/\/-----------------------------------\n    \/\/ \u4ee5\u4e0b\u5168\u90e8\u8f93\u51fa \"Hello x    !\"\n    \/\/ \u4e3a\"x\"\u540e\u9762\u586b\u5145\u7a7a\u683c\uff0c\u8865\u9f50\u5bbd\u5ea65\n    println!(\"Hello {:5}!\", \"x\");\n    \/\/ \u4f7f\u7528\u53c2\u65705\u6765\u6307\u5b9a\u5bbd\u5ea6\n    println!(\"Hello {:1$}!\", \"x\", 5);\n    \/\/ \u4f7f\u7528x\u4f5c\u4e3a\u5360\u4f4d\u7b26\u8f93\u51fa\u5185\u5bb9\uff0c\u540c\u65f6\u4f7f\u75285\u4f5c\u4e3a\u5bbd\u5ea6\n    println!(\"Hello {1:0$}!\", 5, \"x\");\n    \/\/ \u4f7f\u7528\u6709\u540d\u79f0\u7684\u53c2\u6570\u4f5c\u4e3a\u5bbd\u5ea6\n    println!(\"Hello {:width$}!\", \"x\", width = 5);\n    \/\/-----------------------------------\n\n    \/\/ \u4f7f\u7528\u53c2\u65705\u4e3a\u53c2\u6570x\u6307\u5b9a\u5bbd\u5ea6\uff0c\u540c\u65f6\u5728\u7ed3\u5c3e\u8f93\u51fa\u53c2\u65705 => Hello x    !5\n    println!(\"Hello {:1$}!{}\", \"x\", 5);\n}<\/code><\/pre>\n<p>\u6570\u5b57\u586b\u5145\u65b9\u6cd5\u5982\u4e0b\uff08\u9ed8\u8ba4\u53f3\u5bf9\u9f50\uff09\uff1a<\/p>\n<pre><code class=\"language-rust\">fn main() {\n    \/\/ \u5bbd\u5ea6\u662f5 => Hello     5!\n    println!(\"Hello {:5}!\", 5);\n    \/\/ \u663e\u5f0f\u7684\u8f93\u51fa\u6b63\u53f7 => Hello +5!\n    println!(\"Hello {:+}!\", 5);\n    \/\/ \u5bbd\u5ea65\uff0c\u4f7f\u75280\u8fdb\u884c\u586b\u5145 => Hello 00005!\n    println!(\"Hello {:05}!\", 5);\n    \/\/ \u8d1f\u53f7\u4e5f\u8981\u5360\u7528\u4e00\u4f4d\u5bbd\u5ea6 => Hello -0005!\n    println!(\"Hello {:05}!\", -5);\n}<\/code><\/pre>\n<p>\u5bf9\u9f50\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-rust\">fn main() {\n    \/\/ \u4ee5\u4e0b\u5168\u90e8\u90fd\u4f1a\u8865\u9f505\u4e2a\u5b57\u7b26\u7684\u957f\u5ea6\n    \/\/ \u5de6\u5bf9\u9f50 => Hello x    !\n    println!(\"Hello {:<5}!\", \"x\");\n    \/\/ \u53f3\u5bf9\u9f50 => Hello     x!\n    println!(\"Hello {:>5}!\", \"x\");\n    \/\/ \u5c45\u4e2d\u5bf9\u9f50 => Hello   x  !\n    println!(\"Hello {:^5}!\", \"x\");\n\n    \/\/ \u5bf9\u9f50\u5e76\u4f7f\u7528\u6307\u5b9a\u7b26\u53f7\u586b\u5145 => Hello x&&&&!\n    \/\/ \u6307\u5b9a\u7b26\u53f7\u586b\u5145\u7684\u524d\u63d0\u6761\u4ef6\u662f\u5fc5\u987b\u6709\u5bf9\u9f50\u5b57\u7b26\n    println!(\"Hello {:&<5}!\", \"x\");\n}<\/code><\/pre>\n<p>\u8fdb\u5236\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-rust\">fn main() {\n    \/\/ \u4e8c\u8fdb\u5236 => 0b11011!\n    println!(\"{:#b}!\", 27);\n    \/\/ \u516b\u8fdb\u5236 => 0o33!\n    println!(\"{:#o}!\", 27);\n    \/\/ \u5341\u8fdb\u5236 => 27!\n    println!(\"{}!\", 27);\n    \/\/ \u5c0f\u5199\u5341\u516d\u8fdb\u5236 => 0x1b!\n    println!(\"{:#x}!\", 27);\n    \/\/ \u5927\u5199\u5341\u516d\u8fdb\u5236 => 0x1B!\n    println!(\"{:#X}!\", 27);\n\n    \/\/ \u4e0d\u5e26\u524d\u7f00\u7684\u5341\u516d\u8fdb\u5236 => 1b!\n    println!(\"{:x}!\", 27);\n\n    \/\/ \u4f7f\u75280\u586b\u5145\u4e8c\u8fdb\u5236\uff0c\u5bbd\u5ea6\u4e3a10 => 0b00011011!\n    println!(\"{:#010b}!\", 27);\n}<\/code><\/pre>\n<p><strong><code>rust<\/code>\u64cd\u4f5c\u7b26\u91cd\u8f7d<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u7ed3\u6784\u4f53\u4e3a<code>Foo<\/code>\uff0c\u5185\u90e8\u6709\u4e00\u4e2a\u53d8\u91cf\u79f0\u4e4b\u4e3a<code>val: usize<\/code>\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\u6211\u4eec\u4e0d\u53ef\u4ee5\u5bf9<code>Foo<\/code>\u8fdb\u884c\u52a0\u4e00\u64cd\u4f5c\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>core::ops<\/code>\u5bf9\u52a0\u53f7\u8fdb\u884c\u91cd\u8f7d\u3002\u5177\u4f53\u7684\u5b9e\u73b0\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-rust\">struct Foo {\n      val: usize,\n}\n\nimpl ops::Add<usize> for Foo {\n  type Output = Self;\n\n  fn add(self, rhs: usize) -> Self {\n    Self { self.val + rhs }\n  }\n}<\/code><\/pre>\n<\/blockquote>\n<h2>\u5806\u5206\u914d<\/h2>\n<p>\u4f7f\u7528\u4e86<code>rCore<\/code>\u81ea\u5df1\u5b9e\u73b0\u7684<code>buddy_system_allocator<\/code>\u6765\u7ba1\u7406\u5806\u7a7a\u95f4\u3002\u4f7f\u7528<a href=\"https:\/\/github.com\/rcore-os\/buddy_system_allocator\">\u4f19\u4f34\u7cfb\u7edf<\/a>\u7b97\u6cd5\u5b9e\u73b0\uff0c\u540e\u671f\u53ef\u4ee5\u5b66\u4e60\u4e00\u4e0b\u6e90\u7801\u3002\u8fd9\u91cc\u5148\u76f4\u63a5\u4f7f\u7528\u4e86\u3002\u5f53\u4f7f\u7528<code>rust<\/code>\u7684\u53ea\u80fd\u6307\u9488\/\u5bb9\u5668\u7684\u65f6\u5019\uff0c\u4f1a\u81ea\u52a8\u8c03\u7528\u8fd9\u4e9b\u5806\u5206\u914d\u7684\u65b9\u6cd5\uff0c\u4e0d\u7528\u5411<code>C<\/code>\u8bed\u8a00\u7684<code>malloc<\/code>\u4ee5\u53ca<code>free<\/code>\u51fd\u6570\u663e\u5f0f\u5206\u914d\u3002<\/p>\n<h2>\u5e27\u5206\u914d<\/h2>\n<p><code>rCore<\/code>\u5185\u5b58\u7ba1\u7406\u7684\u5173\u952e\u90e8\u5206\u4e86\uff0c\u65b9\u5f0f\u662f\u7ef4\u62a4\u4e00\u4e2a\u53ef\u7528\u5185\u5b58\u7684\u7a7a\u95f4\u8303\u56f4\uff0c\u52a0\u4e0a\u4e00\u4e2a\u56de\u6536\u7a7a\u95f4\u5217\u8868\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c<code>xv6<\/code>\u76f4\u63a5\u7ef4\u62a4\u7684\u662f\u4e00\u4e2a\u7a7a\u95f2\u7a7a\u95f4\u94fe\u8868\uff0c\u505a\u6cd5\u4f1a\u66b4\u529b\u4e00\u4e9b\u3002<\/p>\n<p><code>rCore<\/code>\u5206\u914d\u7a7a\u95f4\u7684\u65b9\u5f0f\u662f\uff0c\u5c3d\u91cf\u4ece\u56de\u6536\u5217\u8868\u4e2d\u62ff\u53d6\u7a7a\u95f4\uff0c\u4e0d\u80fd\u6ee1\u8db3\u7684\u65f6\u5019\uff0c\u8c03\u6574\u53ef\u7528\u5185\u5b58\u7a7a\u95f4\u7684\u8303\u56f4\uff0c\u5206\u914d\u4e00\u4e2a\u7a7a\u95f2\u7a7a\u95f4\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8bf7\u6c42\u5206\u914d\u90fd\u662f\u5c0f\u7a7a\u95f4\uff0c\u57fa\u672c\u80fd\u4ece\u56de\u6536\u5217\u8868\u4e2d\u6ee1\u8db3\u3002\u8fd9\u6837\u5b9e\u73b0\uff0c\u4e0d\u4ec5\u5206\u914d\u7a7a\u95f4\u5f00\u9500\u5c0f\uff0c\u4e5f\u4e0d\u50cf<code>xv6<\/code>\u9700\u8981\u5360\u7528\u5927\u91cf\u56fa\u5b9a\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/rcore%20frame%20allocator.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/rcore%20frame%20allocator.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"rcore frame allocator\" \/><\/div><\/p>\n<p><code>rCore<\/code>\u6ca1\u6709\u9650\u5236<code>Allocator<\/code>\u7684\u7b97\u6cd5\u5b9e\u73b0\u65b9\u5f0f\uff0c\u4efb\u4f55\u5b9e\u73b0\u4e86<code>allocator<\/code>\u63a5\u53e3\u7684\u5206\u914d\u5668\u90fd\u53ef\u4ee5\u88ab<code>rCore<\/code>\u4f7f\u7528\uff0c\u5229\u7528\u4e86\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u601d\u60f3\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/sfa%20cls.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/sfa%20cls.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"sfa cls\" \/><\/div><\/p>\n<p><code>rCore<\/code>\u4e3a\u6bcf\u4e2a\u7269\u7406\u5e27\u4f7f\u7528\u4e86<code>Tracker<\/code>\u3002<code>Tracker<\/code>\u4f7f\u7528\u4e86<code>Drop, Deref<\/code>\u7b49\u6d3e\u751f\u5c5e\u6027\u3002\u8fd9\u6837\u5f53\u7269\u7406\u5e27\u7684\u751f\u547d\u5468\u671f\u7ed3\u675f\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u81ea\u52a8\u5730\u88ab\u91ca\u653e\u3002\u8fd9\u79cd\u505a\u6cd5\u501f\u9274\u4e86<code>C++<\/code>\u7684<code>RAII<\/code>\u601d\u60f3\u3002<\/p>\n<blockquote>\n<p><strong>\u4ec0\u4e48\u662f<code>RAII<\/code>\uff1f<\/strong><\/p>\n<p><code>RAII<\/code>(Resourse Acquisition Is Initialization)\uff0c\u8d44\u6e90\u83b7\u53d6\u5373\u521d\u59cb\u5316\uff0c\u662fC++\u8bed\u8a00\u7684\u4e00\u79cd\u7ba1\u7406\u8d44\u6e90\u3001\u907f\u514d\u6cc4\u6f0f\u7684\u60ef\u7528\u6cd5\u3002C++\u6807\u51c6\u4fdd\u8bc1\u4efb\u4f55\u60c5\u51b5\u4e0b\uff0c\u5df2\u6784\u9020\u7684\u5bf9\u8c61\u6700\u7ec8\u4f1a\u9500\u6bc1\uff0c\u5373\u5b83\u7684\u6790\u6784\u51fd\u6570\u6700\u7ec8\u4f1a\u88ab\u8c03\u7528\u3002\u7b80\u5355\u7684\u8bf4\uff0cRAII \u7684\u505a\u6cd5\u662f\u4f7f\u7528\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5728\u5176\u6784\u9020\u65f6\u83b7\u53d6\u8d44\u6e90\uff0c\u5728\u5bf9\u8c61\u751f\u547d\u671f\u63a7\u5236\u5bf9\u8d44\u6e90\u7684\u8bbf\u95ee\u4f7f\u4e4b\u59cb\u7ec8\u4fdd\u6301\u6709\u6548\uff0c\u6700\u540e\u5728\u5bf9\u8c61\u6790\u6784\u7684\u65f6\u5019\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n<\/blockquote>\n<h2><code>MemorySet<\/code><\/h2>\n<blockquote>\n<p>\u5728\u5b66\u4e60<code>MemorySet<\/code>\u4e4b\u524d\uff0c\u5148\u770b\u770b<code>rust<\/code>\u5982\u4f55\u81ea\u5df1\u521b\u5efa\u8fed\u4ee3\u5668\u3002\uff08\u56e0\u4e3a<code>VPNRange<\/code>\u7528\u5230\u4e86\uff09<\/p>\n<ol>\n<li>\u9996\u5148\uff0c\u9700\u8981\u58f0\u660e\u4e00\u4e2a\u8fed\u4ee3\u5668\u4fe1\u606f\u7684\u7ed3\u6784\u4f53\uff0c\u8bb0\u5f55\u5f53\u524d\u8fed\u4ee3\u7684\u4f4d\u7f6e\u4ee5\u53ca\u7ed3\u675f\u7684\u4f4d\u7f6e\u3002\u4e3a\u8fd9\u4e2a\u7ed3\u6784\u4f53\u5b9e\u73b0\u8fed\u4ee3\u5668\u7684<code>next<\/code>\u65b9\u6cd5\u3002<\/li>\n<li>\u4e3a\u539f\u6765\u7684\u7ed3\u6784\u4f53\u5bb9\u5668\u5b9e\u73b0\u4e00\u4e2a<code>IntoIterator<\/code>\u7684\u65b9\u6cd5\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002<\/li>\n<\/ol>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/rustiter.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/rustiter.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"rustiter\" \/><\/div><\/p>\n<\/blockquote>\n<p><code>MemorySet<\/code>\u4e2d\u5305\u542b\u4e86\u4e24\u4e2a\u5c5e\u6027\uff0c<code>page_table<\/code>\u4ee5\u53ca<code>map_area<\/code>\u3002<code>MapArea<\/code>\u53c8\u67094\u4e2a\u5c5e\u6027\uff0c\u5206\u522b\u662f<code>vpn_range<\/code>\uff0c<code>data_frame<\/code>\uff0c<code>map_type<\/code>\u548c<code>map_perm<\/code>\u3002<\/p>\n<p>\u5728<code>page_table<\/code>\u4e2d\u8bb0\u5f55\u4e86\u6240\u6709\u9875\u8868\u8282\u70b9\u6240\u5728\u7684\u7269\u7406\u4e5f\u5e27\u3002<code>map_area<\/code>\u4e0b\u5219\u8bb0\u5f55\u4e86\u6bcf\u4e00\u4e2a\u5206\u914d\u7684\u8fde\u7eed\u865a\u62df\u5185\u5b58\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u5206\u914d\u7684\u865a\u62df\u5185\u5b58\u7684\u8303\u56f4\uff0c\u5206\u914d\u7684\u5e27\u4fe1\u606f\uff0c\u6620\u5c04\u7c7b\u578b\uff08\u662f\u76f4\u63a5\u6620\u5c04\uff0c\u8fd8\u662f\u975e\u76f4\u63a5\u6620\u5c04\uff09\u4ee5\u53ca\u6620\u5c04\u6743\u9650\uff08\u53ef\u8bfb\u53ef\u5199\u53ef\u6267\u884c\uff0c\u662f\u5426\u4e3a\u7528\u6237\u7a7a\u95f4\uff09\u3002<\/p>\n<p>\u5185\u6838\u548c\u6bcf\u4e2a\u7528\u6237\u8fdb\u7a0b\u90fd\u4f1a\u6709\u4e00\u4e2a<code>MemorySet<\/code>\u6765\u8bb0\u5f55\u5185\u5b58\u5206\u914d\u4fe1\u606f\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240225195153838.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240225195153838.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240225195153838\" \/><\/div><\/p>\n<h3><code>PageTable<\/code><\/h3>\n<p><code>PageTable<\/code>\u7531\u4e24\u4e2a\u5c5e\u6027\u6784\u6210\uff1a<code>root_ppn<\/code>\u4ee5\u53ca<code>frame<\/code>\u3002<code>root_ppn<\/code>\u8bb0\u5f55\u4e86\u8ddf\u9875\u8868\u7684\u7269\u7406\u9875\u53f7\uff0c\u540e\u9762\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u503c\u6765\u751f\u6210<code>satp<\/code>\u7684\u503c\u3002<code>frame<\/code>\u91cc\u5b58\u653e\u4e86\u4e3a\u8fd9\u4e2a\u9875\u8868\u5206\u914d\u7684\u6240\u6709\u7684\u7269\u7406\u9875\u5e27\uff0c\u76ee\u7684\u4e5f\u662f\u4e3a\u4e86\u4f7f\u7528<code>rust<\/code>\u7684\u7279\u6027\u5bf9\u5206\u914d\u7684\u9875\u5e27\u81ea\u52a8\u8d44\u6e90\u7ba1\u7406\u3002<\/p>\n<h3><code>MemArea<\/code><\/h3>\n<p><code>MemArea<\/code>\u75314\u4e2a\u5c5e\u6027\u6784\u6210\uff1a<code>vpn_range<\/code>\u3001<code>data_frame<\/code>\u3001<code>map_type<\/code>\u4ee5\u53ca<code>map_perm<\/code>\u3002<code>vpn_range<\/code>\u8868\u793a\u5bf9\u8be5\u8fde\u7eed\u7684\u865a\u62df\u5185\u5b58\u7a7a\u95f4\u7684\u8303\u56f4\uff1b<code>data_frame<\/code>\u4f7f\u7528\u4e86\u4e00\u4e2a\u662fB\u6811\u6570\u636e\u7ed3\u6784<code>BTreeMap<\/code>\uff0c\u5b58\u50a8\u4e86\u6bcf\u4e2a\u865a\u62df\u5730\u5740\u5bf9\u5e94\u7684\u7269\u7406\u9875\u5e27\u3002\u8ddf\u9875\u8868\u4e00\u6837\uff0c\u4e3a\u4e86\u4f7f\u7528<code>rust<\/code>\u81ea\u52a8\u7ba1\u7406\u8d44\u6e90\u7684\u7279\u6027\u3002<code>map_type<\/code>\u548c<code>map_perm<\/code>\u5206\u522b\u8868\u793a\u8be5\u865a\u62df\u5185\u5b58\u6bb5\u6620\u5c04\u7684\u65b9\u5f0f\u4ee5\u53ca\u6743\u9650\u3002<\/p>\n<blockquote>\n<p><strong>\u4ec0\u4e48\u662fB\u6811\uff1f<\/strong><\/p>\n<p>B\u6811\u662f\u4e00\u4e2a\u5e73\u8861\u591a\u8def\u67e5\u627e\u6811\uff0c\u6570\u636e\u5e93\u7684\u7d22\u5f15\u6280\u672f\u91cc\u5927\u91cf\u4f7f\u7528\u7740B\u6811\u4ee5\u53caB+\u6811\u3002<\/p>\n<p>\u5728B\u6811\u4e2d\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2a$M$\u503c\u3002\u5b9a\u4e49$D(u)$\u8868\u793a$u$\u8282\u70b9\u7684\u5b57\u8282\u70b9\u6570\u3002B\u6811\u89c4\u5b9a\uff0c$D(u) &gt; 1$\u4e14$D(u) \\le M$\uff0c$u$\u5c5e\u4e8e\u975e\u53f6\u5b50\u8282\u70b9\u3002<\/p>\n<p>\u5b9e\u9645\u7684\u4f8b\u5b50\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240309212510801.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240309212510801.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240309212510801\" \/><\/div><\/p>\n<p>\u5728B\u6811\u7684\u63d2\u5165\u548c\u5220\u9664\u4e2d\uff0c\u5982\u679c\u975e\u53f6\u8282\u70b9\u7684\u7684\u5b50\u8282\u70b9\u6570\u4e0d\u6ee1\u8db3\u4e0a\u8ff0$M$\u6240\u9700\u8981\u7684\u8981\u6c42\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u5bf9\u8282\u70b9\u8fdb\u884c\u5206\u88c2\u6216\u8005\u662f\u7ec4\u5408\u3002\u6240\u4ee5\uff0cB\u6811\u4e00\u5f00\u59cb\u7684\u65f6\u5019\u5e76\u4e0d\u662f\u6811\u72b6\u3002<\/p>\n<p><strong>\u4ec0\u4e48\u662fB+\u6811\uff1f<\/strong><\/p>\n<p>B\u6811\u7684\u975e\u53f6\u5b50\u8282\u70b9\u662f\u53ef\u4ee5\u4fdd\u5b58\u5177\u4f53\u7684\u6570\u636e\u7684\uff0c\u8fd9\u5bfc\u81f4\u4e86\u6bcf\u4e2a\u6570\u636e\u7684\u68c0\u7d22\u65f6\u95f4\u5e76\u4e0d\u76f8\u540c\u3002B+\u6811\u7684\u975e\u53f6\u5b50\u8282\u70b9\u4e0d\u4fdd\u5b58\u5177\u4f53\u7684\u6570\u636e\uff0c\u800c\u53ea\u4fdd\u5b58\u5173\u952e\u5b57\u7684\u7d22\u5f15\uff0c\u4ece\u800c\u6240\u6709\u7684\u6570\u636e\u6700\u7ec8\u90fd\u4f1a\u4fdd\u5b58\u5230\u53f6\u5b50\u8282\u70b9\u3002\u6b63\u56e0\u4e3a\u6240\u6709\u6570\u636e\u90fd\u4fdd\u5b58\u5230\u53f6\u5b50\u8282\u70b9\uff0c\u6bcf\u4e2a\u6570\u636e\u67e5\u8be2\u7684\u6b21\u6570\u90fd\u4e00\u6837\uff0c\u67e5\u8be2\u6548\u7387\u7a33\u5b9a\u3002<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240309213314761.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/image-20240309213314761.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240309213314761\" \/><\/div><\/p>\n<\/blockquote>\n<p>\u603b\u7ed3\uff0c\u6bcf\u4e00\u4e2a\u8fdb\u7a0b\u7684\u5185\u5b58\u90fd\u662f\u7531<code>PageTable<\/code>\u4ee5\u53ca\u591a\u4e2a\u8fde\u7eed\u7684\u865a\u62df\u5185\u5b58\u7a7a\u95f4<code>MemArea<\/code>\u6784\u6210\u3002<\/p>\n<h2>\u5185\u6838\u5730\u5740\u7a7a\u95f4<\/h2>\n<p>\u5728<code>MemorySet<\/code>\u4e2d\uff0c\u5b9e\u73b0\u4e86\u4e00\u4e2a<code>new_kernel<\/code>\u51fd\u6570\uff0c\u7528\u4e8e\u5efa\u7acb\u4e00\u4e2a\u5185\u6838\u7684\u5730\u5740\u7a7a\u95f4\u3002<\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5148\u5efa\u7acb\u5185\u6838\u4f4e\u5730\u5740\u6bb5\u7684\u6620\u5c04\uff0c\u4f4e\u5730\u5740\u6bb5\u7684\u5730\u5740\u7a7a\u95f4\u56fe\u5165\u4e0b\uff1a<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/kernel%20space%20r.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"https:\/\/raw.githubusercontent.com\/YEWPO\/yewpoblogonlinePic\/main\/kernel%20space%20r.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"kernel space r\" \/><\/div><\/p>\n<p>\u5176\u4e2d\uff0c<code>KERNEL_BASE_ADDRESS<\/code>\u4e3a<code>0x80200000<\/code>\uff0c<code>0x80000000~0x80200000<\/code>\u7559\u7ed9\u4e86<code>SBI<\/code>\u3002<code>MEMORY_MAX<\/code>\u4e3a<code>0x88000000<\/code>\u3002<\/p>\n<p>\u56fe\u4e2d\u7684\u5404\u4e2a\u6570\u636e\u6bb5\u7684\u7a7a\u95f4\u53ef\u4ee5\u4ece<code>linker<\/code>\u811a\u672c\u4e2d\u83b7\u5f97\uff0c\u6bcf\u4e2a\u6bb5\u7684\u6743\u9650\u89c4\u5b9a\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u56db\u4e2a\u903b\u8f91\u6bb5\u7684 U \u6807\u5fd7\u4f4d\u5747\u672a\u88ab\u8bbe\u7f6e\uff0c\u4f7f\u5f97 CPU \u53ea\u80fd\u5728\u5904\u4e8e S \u7279\u6743\u7ea7\uff08\u6216\u4ee5\u4e0a\uff09\u65f6\u8bbf\u95ee\u5b83\u4eec\uff1b<\/li>\n<li>\u4ee3\u7801\u6bb5 <code>.text<\/code> \u4e0d\u5141\u8bb8\u88ab\u4fee\u6539\uff1b<\/li>\n<li>\u53ea\u8bfb\u6570\u636e\u6bb5 <code>.rodata<\/code> \u4e0d\u5141\u8bb8\u88ab\u4fee\u6539\uff0c\u4e5f\u4e0d\u5141\u8bb8\u4ece\u5b83\u4e0a\u9762\u53d6\u6307\u6267\u884c\uff1b<\/li>\n<li><code>.data\/.bss<\/code> \u5747\u5141\u8bb8\u88ab\u8bfb\u5199\uff0c\u4f46\u662f\u4e0d\u5141\u8bb8\u4ece\u5b83\u4e0a\u9762\u53d6\u6307\u6267\u884c\u3002<\/li>\n<\/ul>\n<h2>\u53c2\u8003\u8d44\u6599<\/h2>\n<p><a href=\"https:\/\/rcore-os.cn\/rCore-Tutorial-Book-v3\/chapter4\/index.html\"><code>rCore<\/code>\u5730\u5740\u7a7a\u95f4<\/a><\/p>\n<p><a href=\"https:\/\/course.rs\/basic\/formatted-output.html\"><code>Rust<\/code>\u8bed\u8a00\u5723\u7ecf<\/a><\/p>\n<p><a href=\"https:\/\/doc.rust-lang.org\/rust-by-example\/trait\/ops.html\"><code>Rust<\/code>\u64cd\u4f5c\u7b26\u91cd\u8f7d<\/a><\/p>\n<p><a href=\"https:\/\/www.cnblogs.com\/The-explosion\/p\/15676531.html\"><code>RAII<\/code><\/a><\/p>\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/27700617\">\u5e73\u8861\u4e8c\u53c9\u6811\u3001B\u6811\u3001B+\u6811\u3001B*\u6811 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