{"id":56963,"date":"2025-08-15T02:54:25","date_gmt":"2025-08-14T18:54:25","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/56963.html"},"modified":"2025-08-15T02:54:25","modified_gmt":"2025-08-14T18:54:25","slug":"%e5%a0%86%e6%a0%88%e5%af%84%e5%ad%98%e5%99%a8%ef%bc%9a%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e8%83%8c%e5%90%8e%e7%9a%84%e6%a0%b8%e5%bf%83%e5%bc%95%e6%93%8e","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/56963.html","title":{"rendered":"\u5806\u6808\u5bc4\u5b58\u5668\uff1a\u64cd\u4f5c\u7cfb\u7edf\u80cc\u540e\u7684\u6838\u5fc3\u5f15\u64ce"},"content":{"rendered":"<h3>\u5806\u6808\u5bc4\u5b58\u5668&#xff1a;\u64cd\u4f5c\u7cfb\u7edf\u80cc\u540e\u7684\u6838\u5fc3\u5f15\u64ce<\/h3>\n<p>\u5806\u6808\u5bc4\u5b58\u5668&#xff08;Stack Pointer Register&#xff09;\u662fCPU\u4e2d\u63a7\u5236\u6808\u5185\u5b58\u8bbf\u95ee\u7684\u5173\u952e\u5bc4\u5b58\u5668&#xff0c;\u5b83\u51b3\u5b9a\u4e86\u6808\u9876\u4f4d\u7f6e&#xff0c;\u662f\u51fd\u6570\u8c03\u7528\u3001\u4e2d\u65ad\u5904\u7406\u3001\u8fdb\u7a0b\u5207\u6362\u7b49\u6838\u5fc3\u64cd\u4f5c\u7684\u57fa\u77f3\u3002<\/p>\n<hr \/>\n<h4>\u4e00\u3001\u5806\u6808\u5bc4\u5b58\u5668\u7684\u672c\u8d28<\/h4>\n<h5>1. \u786c\u4ef6\u5c42\u9762\u7684\u5b9a\u4e49<\/h5>\n<ul>\n<li>\u540d\u79f0&#xff1a;x86\u67b6\u6784\u79f0 ESP&#xff08;32\u4f4d&#xff09;\/ RSP&#xff08;64\u4f4d&#xff09;&#xff0c;ARM\u67b6\u6784\u79f0 SP<\/li>\n<li>\u4f5c\u7528&#xff1a;\u59cb\u7ec8\u5b58\u50a8\u5f53\u524d\u6808\u9876\u7684\u5185\u5b58\u5730\u5740<\/li>\n<li>\u64cd\u4f5c\u89c4\u5219&#xff1a;push eax  ; \u7b49\u6548\u4e8e&#xff1a;sub esp, 4  &#043; mov [esp], eax<br \/>\npop ebx   ; \u7b49\u6548\u4e8e&#xff1a;mov ebx, [esp] &#043; add esp, 4<\/p>\n<\/li>\n<\/ul>\n<h5>2. \u6808\u5185\u5b58\u7684\u8fd0\u4f5c\u673a\u5236<\/h5>\n<p>\u9ad8\u5730\u5740<br \/>\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510<br \/>\n\u2502   \u53c2\u6570n      \u2502 \u2190 EBP &#043; <span class=\"token number\">12<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502   \u53c2\u65701      \u2502 \u2190 EBP &#043; <span class=\"token number\">8<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502 \u8fd4\u56de\u5730\u5740      \u2502 \u2190 EBP &#043; <span class=\"token number\">4<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502 \u4fdd\u5b58\u7684EBP     \u2502 \u2190 EBP <span class=\"token punctuation\">(<\/span>\u5f53\u524d\u5e27\u57fa\u5740<span class=\"token punctuation\">)<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502 \u5c40\u90e8\u53d8\u91cf1     \u2502 \u2190 EBP &#8211; <span class=\"token number\">4<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502 \u5c40\u90e8\u53d8\u91cf2     \u2502 \u2190 EBP &#8211; <span class=\"token number\">8<\/span><br \/>\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524<br \/>\n\u2502     <span class=\"token punctuation\">..<\/span>.      \u2502<br \/>\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518 \u2190 ESP <span class=\"token punctuation\">(<\/span>\u6808\u9876<span class=\"token punctuation\">)<\/span><br \/>\n\u4f4e\u5730\u5740<\/p>\n<hr \/>\n<h4>\u4e8c\u3001\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u6838\u5fc3\u5e94\u7528\u573a\u666f<\/h4>\n<h5>1. \u51fd\u6570\u8c03\u7528&#xff08;408\u9ad8\u9891\u8003\u70b9&#xff09;<\/h5>\n<p>\u8c03\u7528\u65f6&#xff1a;<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> c <span class=\"token operator\">&#061;<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5c40\u90e8\u53d8\u91cf\u5b58\u5165\u6808<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> c<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u25b8 \u6808\u5bc4\u5b58\u5668\u53d8\u5316&#xff1a;<\/p>\n<li>\u53c2\u6570\u538b\u6808&#xff1a;push b, push a \u2192 ESP-&#061;8<\/li>\n<li>\u8fd4\u56de\u5730\u5740\u538b\u6808&#xff1a;call add \u2192 ESP-&#061;4<\/li>\n<li>\u4fdd\u5b58\u539fEBP&#xff1a;push ebp \u2192 ESP-&#061;4<\/li>\n<li>\u79fb\u52a8EBP&#xff1a;mov ebp, esp&#xff08;\u5efa\u7acb\u65b0\u6808\u5e27&#xff09;<\/li>\n<h5>2. \u4e2d\u65ad\u5904\u7406&#xff08;\u64cd\u4f5c\u7cfb\u7edf\u7684\u6838\u5fc3\u673a\u5236&#xff09;<\/h5>\n<p>\u4e2d\u65ad\u53d1\u751f\u65f6\u7684\u64cd\u4f5c&#xff1a;<\/p>\n<li>CPU\u81ea\u52a8\u4fdd\u5b58\u73b0\u573a&#xff1a;\n<ul>\n<li>\u4f9d\u6b21\u538b\u5165&#xff1a;EFLAGS, CS, EIP&#xff08;\u8fd4\u56de\u5730\u5740&#xff09;<\/li>\n<li>\u82e5\u7279\u6743\u7ea7\u5207\u6362&#xff1a;\u989d\u5916\u538b\u5165 SS, ESP<\/li>\n<\/ul>\n<\/li>\n<li>\u52a0\u8f7d\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u5165\u53e3<\/li>\n<li>\u5173\u952e\u70b9&#xff1a;\u4e2d\u65ad\u5904\u7406\u5168\u7a0b\u4f9d\u8d56\u6808\u5bc4\u5b58\u5668\u5b9a\u4f4d\u4fdd\u5b58\u7684\u4e0a\u4e0b\u6587<\/li>\n<h5>3. \u8fdb\u7a0b\u5207\u6362&#xff08;\u8fdb\u7a0b\u7ba1\u7406\u6838\u5fc3&#xff09;<\/h5>\n<p>\u5207\u6362\u6b65\u9aa4&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u4f2a\u4ee3\u7801\u793a\u610f<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">schedule<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ 1. \u4fdd\u5b58\u5f53\u524d\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5230\u5176\u5185\u6838\u6808<\/span><br \/>\n    <span class=\"token function\">push_registers<\/span><span class=\"token punctuation\">(<\/span>current<span class=\"token operator\">-&gt;<\/span>kernel_stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ 2. \u66f4\u65b0ESP\u6307\u5411\u65b0\u8fdb\u7a0b\u7684\u5185\u6838\u6808<\/span><br \/>\n    <span class=\"token function\">load_esp<\/span><span class=\"token punctuation\">(<\/span>next<span class=\"token operator\">-&gt;<\/span>thread<span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5173\u952e\u64cd\u4f5c&#xff01;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ 3. \u4ece\u65b0\u8fdb\u7a0b\u6808\u4e2d\u6062\u590d\u5bc4\u5b58\u5668<\/span><br \/>\n    <span class=\"token function\">pop_registers<\/span><span class=\"token punctuation\">(<\/span>next<span class=\"token operator\">-&gt;<\/span>kernel_stack<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u25b8 ESP\u5207\u6362\u5373\u5b9e\u73b0\u4e86\u8fdb\u7a0b\u5207\u6362&#xff08;\u914d\u5408CR3\u5bc4\u5b58\u5668\u66f4\u6362\u5730\u5740\u7a7a\u95f4&#xff09;<\/p>\n<hr \/>\n<h4>\u4e09\u3001\u5806\u6808\u5bc4\u5b58\u5668\u7684\u5173\u952e\u7279\u6027<\/h4>\n<h5>1. \u7279\u6743\u7ea7\u9694\u79bb<\/h5>\n<table>\n<tr>\u7279\u6743\u7ea7\u5806\u6808\u5bc4\u5b58\u5668\u4f5c\u7528\u57df<\/tr>\n<tbody>\n<tr>\n<td>Ring 0<\/td>\n<td>ESP0 (TSS\u4e2d\u5b58\u50a8)<\/td>\n<td>\u5185\u6838\u6001\u6808\u9876<\/td>\n<\/tr>\n<tr>\n<td>Ring 3<\/td>\n<td>ESP<\/td>\n<td>\u7528\u6237\u6001\u6808\u9876<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u25b8 \u7528\u6237\u6001\u2192\u5185\u6838\u6001\u5207\u6362\u65f6&#xff0c;CPU\u81ea\u52a8\u4eceTSS\u52a0\u8f7d ESP0<\/p>\n<h5>2. \u591a\u7ebf\u7a0b\u652f\u6301<\/h5>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">task_struct<\/span> <span class=\"token punctuation\">{<\/span>      <span class=\"token comment\">\/\/ Linux\u8fdb\u7a0b\u63cf\u8ff0\u7b26<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>stack<span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/\/ \u6307\u5411\u5185\u6838\u6808\u5e95<\/span><br \/>\n    <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">thread_info<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">unsigned<\/span> <span class=\"token keyword\">long<\/span> sp<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4fdd\u5b58\u7684\u6808\u6307\u9488<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u6bcf\u4e2a\u7ebf\u7a0b\u62e5\u6709\u72ec\u7acb\u7684\u5185\u6838\u6808&#xff08;\u901a\u5e388KB&#xff09;&#xff0c;\u5207\u6362\u65f6\u66f4\u65b0ESP<\/p>\n<h5>3. \u6808\u6ea2\u51fa\u4fdd\u62a4<\/h5>\n<p>\u786c\u4ef6\u8f85\u52a9\u673a\u5236&#xff1a;<\/p>\n<ul>\n<li>Stack Guard Page&#xff1a;\u5728\u6808\u5e95\u5206\u914d\u4e0d\u53ef\u8bbf\u95ee\u7684\u9875<\/li>\n<li>\u5f53 ESP \u89e6\u53ca\u8be5\u9875 \u2192 \u89e6\u53d1 Page Fault (#PF)<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u6355\u83b7\u540e\u629b\u51fa Stack Overflow<\/li>\n<\/ul>\n<hr \/>\n<h4>\u56db\u3001408\u771f\u9898\u6df1\u5ea6\u89e3\u6790<\/h4>\n<h5>1. \u30102019\u5e74\u771f\u9898\u3011\u4e2d\u65ad\u5904\u7406\u4e3a\u4ec0\u4e48\u5fc5\u987b\u4f7f\u7528\u5185\u6838\u6808&#xff1f;<\/h5>\n<p>\u7b54&#xff1a;<br \/>\n(1) \u7528\u6237\u6808\u4e0d\u53ef\u4fe1&#xff0c;\u53ef\u80fd\u88ab\u6076\u610f\u7834\u574f<br \/>\n(2) \u5185\u6838\u6808\u5b58\u50a8\u4e2d\u65ad\u4e0a\u4e0b\u6587&#xff0c;\u4fdd\u8bc1\u5b89\u5168\u9694\u79bb<br \/>\n(3) \u907f\u514d\u7528\u6237\u6808\u7a7a\u95f4\u4e0d\u8db3\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83<\/p>\n<h5>2. \u30102021\u5e74\u771f\u9898\u3011\u51fd\u6570\u8c03\u7528\u65f6\u6808\u5bc4\u5b58\u5668\u5982\u4f55\u53d8\u5316&#xff1f;<\/h5>\n<p>\u7b54&#xff1a;<\/p>\n<p>call func\u524d&#xff1a;ESP\u6307\u5411\u8fd4\u56de\u5730\u5740\u4e0b\u65b9<br \/>\n\u8fdb\u5165func\u540e&#xff1a;<br \/>\n   ESP -&#061; 4  ; \u4fdd\u5b58\u8fd4\u56de\u5730\u5740<br \/>\n   ESP -&#061; 4  ; \u4fdd\u5b58\u539fEBP<br \/>\n   ESP -&#061; N  ; \u5206\u914d\u5c40\u90e8\u53d8\u91cf\u7a7a\u95f4  <\/p>\n<h5>3. \u30102022\u5e74\u771f\u9898\u3011\u8fdb\u7a0b\u5207\u6362\u65f6\u9700\u8981\u4fdd\u5b58\u54ea\u4e9b\u6808\u76f8\u5173\u72b6\u6001&#xff1f;<\/h5>\n<p>\u7b54&#xff1a;<br \/>\n(1) \u7528\u6237\u6808\u6307\u9488&#xff08;SS:ESP&#xff09;<br \/>\n(2) \u5185\u6838\u6808\u6307\u9488&#xff08;thread.sp&#xff09;<br \/>\n(3) \u6808\u5e27\u57fa\u5740&#xff08;EBP&#xff09;<br \/>\n(4) TSS\u4e2d\u7684ESP0&#xff08;\u82e5\u53d1\u751f\u7279\u6743\u7ea7\u5207\u6362&#xff09;<\/p>\n<hr \/>\n<h4>\u4e94\u3001\u603b\u7ed3&#xff1a;\u5806\u6808\u5bc4\u5b58\u5668\u7684\u6838\u5fc3\u5730\u4f4d<\/h4>\n<li>\u51fd\u6570\u8c03\u7528\u7684\u57fa\u77f3&#xff1a;\u5b9e\u73b0\u53c2\u6570\u4f20\u9012\u4e0e\u5c40\u90e8\u53d8\u91cf\u5b58\u50a8<\/li>\n<li>\u4e2d\u65ad\u5904\u7406\u7684\u4fdd\u9556&#xff1a;\u4fdd\u969c\u5b89\u5168\u4e0a\u4e0b\u6587\u5207\u6362<\/li>\n<li>\u8fdb\u7a0b\u5207\u6362\u7684\u6865\u6881&#xff1a;ESP\u5207\u6362\u5373\u8fdb\u7a0b\u5207\u6362\u7684\u672c\u8d28<\/li>\n<li>\u7cfb\u7edf\u5b89\u5168\u7684\u5c4f\u969c&#xff1a;\u7279\u6743\u7ea7\u9694\u79bb\u7684\u6838\u5fc3\u5b9e\u73b0<\/li>\n<p>\u638c\u63e1\u5806\u6808\u5bc4\u5b58\u5668&#xff0c;\u5c31\u63e1\u4f4f\u4e86\u64cd\u4f5c\u7cfb\u7edf\u7684\u547d\u8109 \u2014\u2014 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