{"id":885,"date":"2021-09-01T10:28:42","date_gmt":"2021-09-01T02:28:42","guid":{"rendered":"https:\/\/choson.lifenet.com.tw\/?p=885"},"modified":"2023-03-29T16:04:07","modified_gmt":"2023-03-29T08:04:07","slug":"%e4%bf%9d%e8%ad%b7%e7%92%b00-%e8%99%95%e7%90%86%e6%95%85%e9%9a%9c","status":"publish","type":"post","link":"https:\/\/choson.lifenet.com.tw\/?p=885","title":{"rendered":"\u4fdd\u8b77\u74b00-\u8655\u7406\u6545\u969c"},"content":{"rendered":"\n<p><img decoding=\"async\" src=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/201321603bcsjROKk3.png\" alt=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/201321603bcsjROKk3.png\"><br>-\u4fdd\u8b77\u74b0\uff08\u4f86\u6e90\uff1a\u7dad\u57fa\u767e\u79d1\uff09<\/p>\n\n\n\n<p><strong>\u4fdd\u8b77\u74b0\uff1a\u6307\u4ee4\u7279\u6b0a\u7d1a\u5225\u548c\u64cd\u4f5c\u7cfb\u7d71\u6a21\u5f0f(Protection Rings: Instruction Privilege Levels and OS modes)<\/strong><br>\u5927\u591a\u6578\u73fe\u4ee3\u64cd\u4f5c\u7cfb\u7d71\u4ee5\u5169\u7a2e\u6a21\u5f0f\u904b\u884c\u7a0b\u5e8f\uff1a\u5167\u6838\u6a21\u5f0f\u548c\u7528\u6236\u6a21\u5f0f\u3002\u5167\u6838\u6a21\u5f0f\u901a\u5e38\u904b\u884c\u5728\u7279\u6b0a\u7d1a\u5225 0\uff0c\u800c\u7528\u6236\u6a21\u5f0f\u904b\u884c\u5728\u7279\u6b0a\u7d1a\u5225 3\u3002\u4fdd\u8b77\u74b0\u50b3\u9054\u4e86\u64cd\u4f5c\u7cfb\u7d71\u5982\u4f55\u5229\u7528\u6307\u4ee4\u96c6\u7684 CPU \u7279\u6b0a\u7d1a\u5225\u7684\u60f3\u6cd5\u3002<br>x86\u6307\u4ee4\u96c6\u4e2d\u7684\u7279\u6b0a\u7d1a\u5225\u63a7\u5236\u7576\u524d\u5728\u8655\u7406\u5668\u4e0a\u904b\u884c\u7684\u7a0b\u5e8f\u5c0d\u5167\u5b58\u5340\u57df\u3001I\/O \u7aef\u53e3\u548c\u7279\u6b8a\u6307\u4ee4\u7b49\u8cc7\u6e90\u7684\u8a2a\u554f\u3002\u6709 4 \u500b\u7279\u6b0a\u7d1a\u5225\uff0c\u5f9e 0 \u662f\u6700\u9ad8\u7279\u6b0a\uff0c\u5230 3 \u662f\u6700\u4f4e\u7279\u6b0a\u3002\u5927\u591a\u6578\u73fe\u4ee3\u64cd\u4f5c\u7cfb\u7d71\u5c0d\u5167\u6838\/\u57f7\u884c\u7a0b\u5e8f\u4f7f\u7528\u7d1a\u5225 0\uff0c\u5c0d\u61c9\u7528\u7a0b\u5e8f\u4f7f\u7528\u7d1a\u5225 3\u3002\u4efb\u4f55\u53ef\u7528\u65bc\u7d1a\u5225 n \u7684\u8cc7\u6e90\u4e5f\u53ef\u7528\u65bc\u7d1a\u5225 0 \u5230 n\uff0c\u56e0\u6b64\u6b0a\u9650\u7d1a\u5225\u662f\u74b0\u3002\u7576\u8f03\u4f4e\u7279\u6b0a\u7684\u9032\u7a0b\u5617\u8a66\u8a2a\u554f\u8f03\u9ad8\u7279\u6b0a\u7684\u9032\u7a0b\u6642\uff0c\u6703\u5411\u64cd\u4f5c\u7cfb\u7d71\u5831\u544a\u4e00\u822c\u4fdd\u8b77\u932f\u8aa4\u7570\u5e38\u3002<br>\u8cc7\u6599\u4f86\u6e90\uff1a<a href=\"https:\/\/en.wikipedia.org\/wiki\/Protection_ring\" target=\"_blank\" rel=\"noreferrer noopener\">\u7dad\u57fa\u767e\u79d1<\/a><\/p>\n\n\n\n<p><strong>\u7570\u5e38\u8655\u7406(Exception Handling)<\/strong><br><img decoding=\"async\" src=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/20132160hSxqbEpcQ4.jpg\" alt=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/20132160hSxqbEpcQ4.jpg\"><br>-\u7570\u5e38\u8655\u7406\uff08\u4f86\u6e90\uff1ahttps : \/\/minnie.tuhs.org\/\uff09<br>\u64cd\u4f5c\u7cfb\u7d71 (OS) \u5167\u6838\u901a\u5e38\u8655\u7406\u4f86\u81ea\u9032\u7a0b\u7684\u7cfb\u7d71\u8abf\u7528\u3001\u4f86\u81ea CPU \u7684\u7570\u5e38\u4ee5\u53ca\u4f86\u81ea\u5916\u570d\u8a2d\u5099\u7684\u4e2d\u65b7\u3002\u5728\u7528\u6236\u6a21\u5f0f\u4e0b\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\u6216\u9032\u7a0b\u53ef\u80fd\u6703\u9047\u5230\u932f\u8aa4\u6216\u6545\u969c\uff0c\u5c0e\u81f4\u5728\u5167\u6838\u6a21\u5f0f\u4e0b\u904b\u884c\u7684\u64cd\u4f5c\u7cfb\u7d71\u5167\u6838\u6355\u7372\u5230 CPU \u7d1a\u5225\u7684\u7570\u5e38\u3002\u5982\u679c\u767c\u751f\u6545\u969c\uff0c\u64cd\u4f5c\u7cfb\u7d71\u5167\u6838\u5c07\u62cb\u51fa\u7570\u5e38\u6216\u5411\u61c9\u7528\u7a0b\u5e8f\u767c\u9001\u4fe1\u865f\u3002\u4ee5\u4e0b\u5c4f\u5e55\u622a\u5716\u662f\u6f14\u793a\u61c9\u7528\u7a0b\u5e8f\u6b63\u78ba\u8655\u7406\u7570\u5e38\u7684\u4ee3\u78bc\u7247\u6bb5\u3002\u4f46\u662f\uff0c\u5982\u679c\u61c9\u7528\u7a0b\u5e8f\u4e0d\u8655\u7406\u7570\u5e38\uff0c\u64cd\u4f5c\u7cfb\u7d71\u5c07\u7d42\u6b62\u5b83\u3002<br><img decoding=\"async\" src=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/201321607ZayXG6l5o.jpg\" alt=\"https:\/\/ithelp.ithome.com.tw\/upload\/images\/20210901\/201321607ZayXG6l5o.jpg\"><br>-\u9664\u4ee5\u96f6<\/p>\n\n\n\n<p><strong>\u53c3\u8003<\/strong><br>.&nbsp;<a href=\"https:\/\/en.wikipedia.org\/wiki\/Protection_ring\" target=\"_blank\" rel=\"noreferrer noopener\">\u4fdd\u8b77\u74b0<\/a><br>.&nbsp;<a href=\"https:\/\/www.geeksforgeeks.org\/privileged-and-non-privileged-instructions-in-operating-system\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u64cd\u4f5c\u7cfb\u7d71\u4e2d\u7684\u7279\u6b0a\u548c\u975e\u7279\u6b0a\u6307\u4ee4<\/a><br>.&nbsp;<a href=\"https:\/\/cis.temple.edu\/~qzeng\/cis3207-spring18\/slides\/02-cpu-mode.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">CIS 3207 \u2013 \u64cd\u4f5c\u7cfb\u7d71\uff1aCPU \u6a21\u5f0f<\/a><br>.&nbsp;<a href=\"https:\/\/docs.microsoft.com\/en-us\/windows-hardware\/drivers\/gettingstarted\/writing-a-very-small-kmdf--driver\" target=\"_blank\" rel=\"noreferrer noopener\">\u7de8\u5beb Hello World Windows \u9a45\u52d5\u7a0b\u5e8f (KMDF)<\/a><br>.&nbsp;<a href=\"http:\/\/www.cplusplus.com\/forum\/windows\/114152\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u5982\u4f55\u4f7f\u7528 C++ \u4ee5 SYSTEM \u8eab\u4efd\u904b\u884c\u7a0b\u5e8f\uff1f<\/a><br>.&nbsp;<a href=\"https:\/\/levelup.gitconnected.com\/divide-by-zero-prevention-traps-exceptions-and-portability-9c9c559286a3\" target=\"_blank\" rel=\"noreferrer noopener\">\u9664\u4ee5\u96f6\u9810\u9632\uff1a\u9677\u9631\u3001\u7570\u5e38\u548c\u53ef\u79fb\u690d\u6027<\/a><br>.&nbsp;<a href=\"https:\/\/minnie.tuhs.org\/CompArch\/Lectures\/week05.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u7528\u6236\u548c\u5167\u6838\u6a21\u5f0f\u3001\u7cfb\u7d71\u8abf\u7528\u3001I\/O\u3001\u7570\u5e38<\/a><\/p>\n\n\n\n<p>\u8cc7\u6599\u4f86\u6e90\uff1a\u00a0<a rel=\"noreferrer noopener\" href=\"https:\/\/wentzwu.com\/2021\/08\/02\/cissp-practice-questions-20210802\/\" target=\"_blank\">Wentz Wu QOTD-20210802<\/a><\/p>\n\n\n\n<p>PS:\u6b64\u6587\u7ae0\u7d93\u904e\u4f5c\u8005\u540c\u610f\u520a\u767b \u4e26\u4e14\u6388\u6b0a\u53ef\u4ee5\u7ffb\u8b6f\u6210\u4e2d\u6587<\/p>\n","protected":false},"excerpt":{"rendered":"<p>-\u4fdd\u8b77\u74b0\uff08\u4f86\u6e90\uff1a\u7dad\u57fa\u767e\u79d1\uff09 \u4fdd\u8b77\u74b0\uff1a\u6307\u4ee4\u7279\u6b0a\u7d1a\u5225\u548c\u64cd\u4f5c\u7cfb\u7d71\u6a21\u5f0f(Protection Rings: Instr [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-885","post","type-post","status-publish","format-standard","hentry","category-cisspcertified-information-systems-security-professional"],"_links":{"self":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/885","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=885"}],"version-history":[{"count":2,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/885\/revisions"}],"predecessor-version":[{"id":2812,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/885\/revisions\/2812"}],"wp:attachment":[{"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/choson.lifenet.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}