{"id":2149,"date":"2019-02-26T03:25:41","date_gmt":"2019-02-26T03:25:41","guid":{"rendered":""},"modified":"2019-02-26T11:26:00","modified_gmt":"2019-02-26T03:26:00","slug":"arm%e4%b8%bacortex-m%e6%b7%bb%e5%8a%a0%e4%ba%86%e7%a5%9e%e7%bb%8f%e7%bd%91%e7%bb%9c%e6%8c%87%e4%bb%a4+%e9%92%88%e5%af%b9%e7%89%a9%e8%81%94%e7%bd%91%e7%bd%91%e7%bb%9c","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2149","title":{"rendered":"Arm\u4e3aCortex-M\u6dfb\u52a0\u4e86\u795e\u7ecf\u7f51\u7edc\u6307\u4ee4 \u9488\u5bf9\u7269\u8054\u7f51\u7f51\u7edc"},"content":{"rendered":"

\n\tArm<\/u>\u5df2\u7ecf\u5728\u5176Corte<\/u>x-M\u67b6\u6784\u4e2d\u6dfb\u52a0\u4e86\u795e\u7ecf\u7f51\u7edc<\/u>\u5904\u7406\u6307\u4ee4\uff0c\u9488\u5bf9\u7269\u8054\u7f51\u7f51\u7edc\u5916\u90e8\u8fb9\u7f18\u7684\u4ea7\u54c1\uff0c\u4f8b\u5982\u53ef\u4ee5\u8bc6\u522b\u5c11\u91cf\u8bed\u97f3\u800c\u65e0\u9700\u8fde\u63a5\u5230\u4e91\u7684\u8bbe\u5907\uff0c\u4f8b\u5982\u4eba\u58f0\u5524\u9192\u547d\u4ee4\u3002<\/p>\n

\n\t“M-Profile Vector Extensions”\uff08MVE\uff09\u5df2\u7ecf\u5728“Helium”\u54c1\u724c\u4e0b\u5ba3\u5e03\uff0c\u4e0e\u8be5\u516c\u53f8\u7684\u9ad8\u7aefCortex-A\u5185\u6838\u7684Neon SIMD\uff08\u5355\u6307\u4ee4\u591a\u6570\u636e\uff09\u6269\u5c55\u975e\u5e38\u7c7b\u4f3c\u3002\u6c26\u6269\u5c55\u8fd8\u5c06\u5904\u7406\u6570\u5b57\u4fe1\u53f7\u5904\u7406\uff0c\u63d0\u4f9b\u6bd4\u73b0\u6709DSP<\/u>\u6307\u4ee4\u66f4\u9ad8\u7684\u6027\u80fd\uff0c\u8fd9\u4e9b\u6307\u4ee4\u662f\u4e3a\u4e86\u5c06Cortex-M3\u8f6c\u6362\u4e3aCortex-M4\u800c\u521b\u5efa\u7684\u3002<\/p>\n

\n\t <\/div>\n

\n\tArm\u5c06Helium\u63cf\u8ff0\u4e3a“\u9488\u5bf9M-profile\u67b6\u6784\u91cf\u8eab\u5b9a\u5236\u7684Neon\u6280\u672f\u7684\u4f18\u5316SIMD\u529f\u80fd\uff0c\u4ee5\u53ca\u9488\u5bf9\u65b0\u5174\u7528\u4f8b\u7684\u65b0\u7f16\u7a0b\u529f\u80fd\u548c\u6570\u636e\u7c7b\u578b”\u3002<\/p>\n

\n\t\"Arm\u4e3aCortex-M\u6dfb\u52a0\u4e86\u795e\u7ecf\u7f51\u7edc\u6307\u4ee4<\/p>\n

\n\t\u4e0e\u6807\u51c6\u768432\u4f4dArmv8-M\u6307\u4ee4\u4e00\u8d77\u4f7f\u7528\u56fa\u5b9a\u957f\u5ea6\u7684128\u4f4d\u5411\u91cf\uff08\u5177\u6709\u805a\u96c6\u8d1f\u8f7d\u548c\u6563\u5e03\u5b58\u50a8\uff0c\u4f4e\u5f00\u9500\u5faa\u73af\u548c\u9884\u6d4b\uff09\u548c\u589e\u52a0\u7684\u7b97\u672f\u652f\u6301\uff08\u56fa\u5b9a\u548c\u6d6e\u70b9\uff0c\u5305\u62ec\u534a\u7cbe\u5ea6\u548c\u5355\u7cbe\u5ea6\u6d6e\u70b9\u6570\u548c8\u4f4d\u6574\u6570\u548c\u590d\u6742\u6570\u5b66\uff0c\u7531150\u6761\u6307\u4ee4\u5171\u540c\u8986\u76d6\uff0c\u5305\u62ec8\u4f4d\u5411\u91cf\u70b9\u79ef\u3002<\/p>\n

\n\t\u540c\u65f6\uff0c\u652f\u6301\u65b0\u6307\u4ee4\u7684\u786c\u4ef6\u5305\u62ec\u901a\u8fc7“TrustZone for Armv8-M”\u6269\u5c55\u548cPSA\u539f\u5219\u7684\u5b89\u5168\u529f\u80fd\u3002<\/p>\n

\n\t\u603b\u4f53\u800c\u8a00\uff0c\u4ece\u73b0\u6709\u7684Armv8.1-M\u6307\u4ee4\u96c6\u67b6\u6784\uff08ISA\uff09\u53ef\u4ee5\u770b\u51fa\uff0c\u4e0e\u73b0\u6709\u7684Armv8-M\u67b6\u6784\uff08\u57fa\u4e8eint32\u4e2d\u7684\u590d\u6742FFT<\/u>\u4f30\u7b97\uff09\u76f8\u6bd4\uff0c\u9884\u8ba1\u6027\u80fd\u63d0\u5347\u9ad8\u8fbe5\u500d\uff0c\u9ad8\u8fbe15\u500d\u673a\u5668\u5b66\u4e60<\/u>\uff08\u57fa\u4e8eint8\u4e2d\u7684\u77e9\u9635\u4e58\u6cd5\uff09\u3002<\/p>\n

\n\tArmv8.1-M\u6838\u5fc3\u5b9e\u65bd\u9009\u9879\u5305\u62ec\uff1a<\/p>\n

\n\t\u7701\u7565\u4e86\u6c26\uff0c\u5e26\u6709\u53ef\u9009\u7684\u6807\u91cf\u6d6e\u70b9\uff08\u5e26\u6216\u4e0d\u5e26\u53cc\u7cbe\u5ea6\u652f\u6491\uff09<\/strong><\/p>\n

\n\t\u6c26\u53ea\u652f\u6301\u5411\u91cf\u6574\u6570\uff0c\u5e26\u6709\u53ef\u9009\u7684\u6807\u91cf\u6d6e\u70b9\uff08\u5e26\u6216\u4e0d\u5e26\u53cc\u7cbe\u5ea6\u652f\u6301\uff09<\/strong><\/p>\n

\n\t\u5177\u6709\u5411\u91cf\u6574\u6570\u52a0\u6d6e\u70b9\u7684\u6c26\uff08\u652f\u6301\u77e2\u91cf\u5355\u7cbe\u5ea6\u548c\u534a\u7cbe\u5ea6\uff09\uff0c\u5e26\u6807\u91cf\u6d6e\u70b9\uff08\u5e26\u6216\u4e0d\u5e26\u53cc\u7cbe\u5ea6\u652f\u6301\uff09<\/strong><\/p>\n

\n\t\u90a3\u4e48\u6307\u4ee4\u96c6\u6307\u4ee4\u662f\u5426\u4f1a\u5bfc\u81f4\u7845\u8db3\u8ff9\u5927\u5e45\u589e\u52a0\uff1f<\/p>\n

\n\t\u4e0d\uff0c\u6839\u636eArm\uff0c\u7279\u522b\u662f\u5728\u6267\u884c\u6c26\u6307\u4ee4\u65f6\u5c06\u91cd\u65b0\u4f7f\u7528\u4e00\u4e9b\u73b0\u6709\u7684v8-M\u786c\u4ef6\u3002\u6ca1\u6709\u786e\u5207\u7684\u6570\u636e\u53d1\u5e03\u3002<\/p>\n

\n\t\u9664\u8bed\u97f3\u5904\u7406\u5916\uff0c\u8fd8\u53ef\u4ee5\u9884\u89c1\u632f\u52a8<\/u>\u5206\u6790\u548c\u89c6\u89c9\u5e94\u7528\u3002<\/strong><\/p>\n

\n\t\u5982\u4eca\uff0c\u591a\u4e2a\u4f9b\u5e94\u5546\u7684\u5de5\u5177\u94fe\u548c\u6a21\u578b\u90fd\u53ef\u4ee5\u4f7f\u7528\u3002\u5305\u62ecArmv8.1-M\u5728\u5185\u7684\u7845\u4ea7\u54c1\u6709\u671b\u5728\u4e24\u5e74\u5185\u4e0a\u5e02\u3002<\/p>\n

\n\t\u9664\u4e86\u77e2\u91cf\u5904\u7406\uff0cHelium\u4eae\u70b9\u8fd8\u5305\u62ec\uff1a<\/p>\n

\n\t\u4ea4\u7ec7\u548c\u89e3\u4ea4\u7ec7\u52a0\u8f7d\u548c\u5b58\u50a8\u6307\u4ee4\uff08VLD2 \/ VST2\uff0c\u6b65\u957f\u4e3a2\uff0cVLD4 \/ VST4\uff0c\u6b65\u957f\u4e3a4\uff09<\/strong><\/p>\n

\n\t\u5411\u91cf\u6536\u96c6\u8f7d\u8377\u548c\u5411\u91cf\u6563\u5e03\u5b58\u50a8\u5411\u91cf\u5bc4\u5b58\u5668<\/u>\u4e2d\u5143\u7d20\u7684\u5b58\u50a8\u5668\u8bbf\u95ee\uff0c\u4f7f\u7528\u53e6\u4e00\u4e2a\u5411\u91cf\u5bc4\u5b58\u5668\u4e2d\u7684\u5143\u7d20\u5b9a\u4e49\u5411\u91cf\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u5730\u5740\u504f\u79fb\u91cf\u3002<\/p>\n

\n\t\u5141\u8bb8\u8f6f\u4ef6\u5904\u7406\u4efb\u610f\u5b58\u50a8\u5668\u8bbf\u95ee\u6a21\u5f0f\uff0c\u5e76\u53ef\u7528\u4e8e\u6a21\u62df\u7279\u6b8a\u5bfb\u5740\u6a21\u5f0f\uff0c\u5982\u5faa\u73af\u5bfb\u5740\uff0c\u8fd9\u4e9b\u6a21\u5f0f\u901a\u5e38\u7528\u4e8e\u4fe1\u53f7\u5904\u7406\u3002<\/p>\n

\n\t\u8fd8\u53ef\u4ee5\u5e2e\u52a9\u52a0\u901f\u5404\u79cd\u6570\u636e\u5904\u7406\u4efb\u52a1\u4e2d\u6570\u7ec4\u4e2d\u6570\u636e\u5143\u7d20\u7684\u975e\u987a\u5e8f\u8bbf\u95ee\u5411\u91cf\u590d\u6570\u503c\u5904\u7406\u652f\u6301\u6574\u6570\uff088,16\u548c32\u4f4d\uff09\u548c\u6d6e\u70b9\u6570\uff0832\u4f4d\uff09\uff0c\u4f8b\u5982VCADD\uff0cVCMUL\uff0cVCMLA\u6307\u4ee4\u8f66\u9053\u9884\u6d4b\u4f4d\u6574\u6570\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Arm \u5df2\u7ecf\u5728\u5176Cor te x-M\u67b6\u6784\u4e2d\u6dfb\u52a0\u4e86 \u795e\u7ecf\u7f51\u7edc \u5904\u7406\u6307\u4ee4\uff0c\u9488\u5bf9\u7269\u8054\u7f51\u7f51\u7edc\u5916\u90e8\u8fb9\u7f18\u7684\u4ea7\u54c1\uff0c\u4f8b\u5982\u53ef\u4ee5\u8bc6\u522b\u5c11\u91cf\u8bed\u97f3\u800c\u65e0\u9700\u8fde\u63a5\u5230\u4e91\u7684\u8bbe\u5907\uff0c\u4f8b\u5982\u4eba\u58f0\u5524\u9192\u547d\u4ee4\u3002 M-Profile Vector Extensions\uff08M<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2149"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2149"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/2149\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2149"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}