{"id":106257,"date":"2026-09-16T23:56:47","date_gmt":"2026-09-16T15:56:47","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/106257.html"},"modified":"2026-09-16T23:56:47","modified_gmt":"2026-09-16T15:56:47","slug":"%e3%80%90arm%e8%8a%af%e7%89%87%e7%9a%84%e5%90%af%e5%8a%a8%e7%a8%8b%e5%ba%8f%e3%80%91%e6%b1%87%e7%bc%96%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/106257.html","title":{"rendered":"\u3010ARM\u82af\u7247\u7684\u542f\u52a8\u7a0b\u5e8f\u3011\u6c47\u7f16\u5b66\u4e60"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001\u7a0b\u5e8f\u72b6\u6001\u5bc4\u5b58\u5668<\/li>\n<li>\u4e8c\u3001\u7acb\u5373\u6570(imm)\u7684\u6982\u5ff5<\/li>\n<li>\u4e09\u3001\u6c47\u7f16\u6307\u4ee4<\/li>\n<li>\n<ul>\n<li>mov\u6307\u4ee4<\/li>\n<li>add\u6307\u4ee4<\/li>\n<li>sub\u6307\u4ee4<\/li>\n<li>ldr\u6307\u4ee4<\/li>\n<li>str\u6307\u4ee4<\/li>\n<li>bic\u6307\u4ee4<\/li>\n<li>orr\u6307\u4ee4<\/li>\n<li>CMP\u6307\u4ee4<\/li>\n<li>b\u6307\u4ee4<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001s\u540e\u7f00<\/li>\n<li>\u4e94\u3001ARM CPSR \u5e38\u7528\u6761\u4ef6\u7801<\/li>\n<li>\u516d\u3001\u6808\u7684\u5206\u7c7b<\/li>\n<li>\u4e03\u3001\u6c47\u7f16\u548cC\u8bed\u8a00\u6df7\u5408\u7f16\u7a0b<\/li>\n<li>\n<ul>\n<li>7.1 \u6c47\u7f16\u8c03\u7528C\u51fd\u6570<\/li>\n<li>7.2 C\u8c03\u7528\u6c47\u7f16\u51fd\u6570<\/li>\n<\/ul>\n<\/li>\n<li>\u516b\u3001\u5207\u6362\u5904\u7406\u5668\u5de5\u4f5c\u6a21\u5f0f\u4e3aUSER\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155644-6aaabc3c2a3ce.png\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u524d\u8a00<\/h3>\n<p>\u7531\u4e8e\u4f7f\u7528arm\u82af\u7247\u65f6&#xff0c;\u5176\u672c\u8eab\u662f\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528C\u8bed\u8a00\u73af\u5883\u8fdb\u884c\u7a0b\u5e8f\u8bbe\u8ba1\u7684&#xff0c;\u6240\u4ee5\u6211\u4eec\u9700\u8981\u7b80\u5355\u5b66\u4e60\u6c47\u7f16\u6307\u4ee4\u6765\u7f16\u5199arm\u82af\u7247\u7684\u542f\u52a8\u7a0b\u5e8f&#xff0c;\u4f7f\u5176\u80fd\u591f\u4f7f\u7528C\u73af\u5883&#xff0c;\u5373\u542f\u52a8\u4ee3\u7801\u542f\u52a8\u4ee5\u540e&#xff0c;\u5f15\u5bfc\u7a0b\u5e8f\u5230C\u8bed\u8a00\u73af\u5883\u4e0b\u8fd0\u884c\u3002\u6362\u53e5\u8bdd\u8bf4\u542f\u52a8\u4ee3\u7801\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u5728\u5904\u7406\u5668\u590d\u4f4d\u4ee5\u540e\u642d\u5efa c \u8bed\u8a00\u6700\u57fa\u672c\u7684\u9700\u6c42\u3002<\/p>\n<h3>\u4e00\u3001\u7a0b\u5e8f\u72b6\u6001\u5bc4\u5b58\u5668<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155644-6aaabc3ce080a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e8c\u3001\u7acb\u5373\u6570(imm)\u7684\u6982\u5ff5<\/h3>\n<p>8\u4f4d\u300110\u4f4d\u300112\u4f4d<\/p>\n<p>\u7acb\u5373\u6570\u7684\u5224\u65ad&#xff1a;<\/p>\n<li>\u5982\u679c\u67d0\u4e2a\u6570\u7684\u6570\u503c\u8303\u56f4\u662f 0~0xFF \u4e4b\u95f4&#xff0c;\u90a3\u4e48\u8fd9\u4e2a\u6570\u4e00\u5b9a\u662f\u7acb\u5373\u6570&#xff1b;<\/li>\n<li>\u628a\u67d0\u4e2a\u6570\u5c55\u5f00\u6210 2 \u8fdb\u5236&#xff0c;\u8fd9\u4e2a\u6570\u7684\u6700\u9ad8\u4f4d 1 \u81f3\u6700\u4f4e\u4f4d 1 \u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217\u7684\u4f4d \u6570\u4e0d\u80fd\u8d85\u8fc7 8 \u4f4d&#xff1b;<\/li>\n<li>\u8fd9\u4e2a\u6570\u7684\u4e8c\u8fdb\u5236\u5e8f\u5217\u51d1\u591f 8 \u4f4d\u4e4b\u540e\u7684\u7684\u53f3\u8fb9\u5fc5\u987b\u4e3a\u5076\u6570\u4e2a\u8fde\u7eed\u7684 0<\/li>\n<p>\u4f8b&#xff1a;<\/p>\n<ul>\n<li>\n<p>0x234 &#061; 0000 0000 0000 0000 0000 0010 0011 0100 \u6700\u9ad8\u4f4d1\u81f3\u6700\u4f4e\u4f4d1\u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217&#xff1a;1000 1101\u6ca1\u6709\u8d85\u8fc78\u4f4d \u672b\u5c3e1\u7684\u53f3\u8fb9\u67092\u4e2a0&#xff0c;\u6240\u4ee50x234\u662f\u7acb\u5373\u6570<\/p>\n<\/li>\n<li>\n<p>0x3f4 &#061; 0000 0000 0000 0000 0000 0011 1111 0100 \u6700\u9ad8\u4f4d1\u81f3\u6700\u4f4e\u4f4d1\u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217&#xff1a;1111 1101 \u4ece\u7b2c\u4e00\u4e2a1\u5f00\u59cb\u5230\u6700\u540e\u4e00\u4e2a1\u4e4b\u95f4\u6ca1\u6709\u8d85\u8fc78\u4f4d \u672b\u5c3e1\u7684\u53f3\u8fb9\u67092\u4e2a0&#xff0c;\u6240\u4ee50x3f4\u662f\u7acb\u5373\u6570<\/p>\n<\/li>\n<li>\n<p>0x132 &#061; 0000 0000 0000 0000 0000 0001 0011 0010 \u6700\u9ad8\u4f4d1\u81f3\u6700\u4f4e\u4f4d1\u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217&#xff1a;1001 1001 \u4ece\u7b2c\u4e00\u4e2a1\u5f00\u59cb\u5230\u6700\u540e\u4e00\u4e2a1\u4e4b\u95f4\u6ca1\u6709\u8d85\u8fc78\u4f4d \u672b\u5c3e1\u7684\u53f3\u8fb9\u67091\u4e2a0&#xff0c;\u4e0d\u6ee1\u8db3\u7b2c\u4e8c\u6761&#xff0c;\u6240\u4ee50x132\u4e0d\u662f\u7acb\u5373\u6570<\/p>\n<\/li>\n<li>\n<p>0x7f8 &#061; 0000 0000 0000 0000 0000 0111 1111 1000 \u6700\u9ad8\u4f4d1\u81f3\u6700\u4f4e\u4f4d1\u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217&#xff1a;1111 1111\u4ece\u7b2c\u4e00\u4e2a1\u5f00\u59cb\u5230\u6700\u540e\u4e00\u4e2a1\u4e4b\u95f4\u6ca1\u6709\u8d85\u8fc78\u4f4d \u672b\u5c3e1\u7684\u53f3\u8fb9\u67093\u4e2a0&#xff0c;\u4e0d\u6ee1\u8db3\u7b2c\u4e8c\u6761&#xff0c;\u6240\u4ee50x7f8\u4e0d\u662f\u7acb\u5373\u6570<\/p>\n<\/li>\n<li>\n<p>0xfab4 &#061; 0000 0000 0000 0000 1111 1010 1011 0100 \u6700\u9ad8\u4f4d1\u81f3\u6700\u4f4e\u4f4d1\u4e4b\u95f4\u7684\u4e8c\u8fdb\u5236\u6570\u5e8f\u5217&#xff1a;0011 1110 1010 1101 \u4ece\u7b2c\u4e00\u4e2a1\u5f00\u59cb\u5230\u6700\u540e\u4e00\u4e2a1\u4e4b\u95f4\u8d85\u8fc78\u4f4d&#xff0c;\u4e0d\u6ee1\u8db3\u6761\u4ef61&#xff0c;\u6240\u4ee5\u8fd9\u4e2a\u6570\u4e0d\u662f\u7acb\u5373\u6570<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155645-6aaabc3d922dd.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> ARM \u6307\u4ee4\u673a\u5668\u7801\u53ea\u670912bit \u7528\u6765\u5b58\u7acb\u5373\u6570&#xff0c;\u653e\u4e0d\u4e0b\u5b8c\u6574 32 \u4f4d\u6570\u5b57&#xff0c;\u62c6\u6210\u4e24\u90e8\u5206&#xff1a;<\/p>\n<li>\u9ad8 4 \u4f4d&#xff1a;rotate&#xff08;\u65cb\u8f6c\u4f4d&#xff0c;\u9ec4\u8272\u5757&#xff09;<\/li>\n<li>\u4f4e 8 \u4f4d&#xff1a;imm8&#xff08;8 \u4f4d\u57fa\u7840\u7acb\u5373\u6570&#xff0c;\u9752\u8272\u5757&#xff09;<\/li>\n<p>\u6700\u7ec8 32 \u4f4d\u7acb\u5373\u6570 &#061; imm8 \u5faa\u73af\u53f3\u79fb 2\u00d7rotate \u4f4d&#xff08;\u79fb\u4f4d\u6b65\u6570\u6c38\u8fdc\u662f\u5076\u6570&#xff1a;0\u30012\u30014 \u2026 30 \u4f4d\u3002&#xff09; \u5982\u4e0a\u56fe&#xff1a;ADD R0, R1, #0xFA00 ; \u5408\u6cd5&#xff0c;\u6c47\u7f16\u5668\u7b97\u51farotate&#061;12 imm8&#061;0xFA&#xff0c;\u586b\u5165\u673a\u5668\u780112bit<\/p>\n<h3>\u4e09\u3001\u6c47\u7f16\u6307\u4ee4<\/h3>\n<h4>mov\u6307\u4ee4<\/h4>\n<p>\u52a0\u8f7d12\u4f4d\u7acb\u5373\u6570\u5230\u5bc4\u5b58\u5668\u6216\u8f6c\u79fb\u4e00\u4e2a\u5bc4\u5b58\u5668\u7684\u503c\u5230\u53e6\u5916\u4e00\u4e2a\u5bc4\u5b58\u5668&#xff1b; MOV{S}&lt;c&gt; &lt;Rd&gt;, #&lt;const&gt;<\/p>\n<p>\u4f8b&#xff1a; mov r0, #2 &#xff1b;\u52a0\u8f7d\u7acb\u5373\u65702\u5230\u5bc4\u5b58\u5668r0<\/p>\n<p>MOV{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rm&gt;<\/p>\n<p>\u4f8b&#xff1a; mov r1, r0 &#xff1b;\u5c06r0\u5bc4\u5b58\u5668\u7684\u503c\u52a0\u8f7d\u5230r1<\/p>\n<h4>add\u6307\u4ee4<\/h4>\n<p>ADD{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rn&gt;, #&lt;const&gt;<\/p>\n<p>\u4f8b&#xff1a; ADD R0, R1, #1 ; R0 &#061; R1 &#043; 1&#xff0c;\u4e0d\u66f4\u65b0\u6807\u5fd7 ADDS R0, R1, #0xFF ; R0 &#061; R1 &#043; 0xFF&#xff0c;\u66f4\u65b0N\/Z\/C\/V<\/p>\n<p>ADD{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rn&gt;, &lt;Rm&gt;{, &lt;shift&gt;}<\/p>\n<p>\u4f8b&#xff1a; ADD R0, R1, R2 ; R0 &#061; R1 &#043; R2 ADD R0, R1, R2, LSL #2 ; R0 &#061; R1 &#043; (R2 &lt;&lt; 2)<\/p>\n<h4>sub\u6307\u4ee4<\/h4>\n<p>SUB{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rn&gt;, #&lt;const&gt;<\/p>\n<p>\u4f8b&#xff1a; SUB R0, R1, #5 ; R0 &#061; R1 \u2212 5&#xff0c;\u4e0d\u66f4\u65b0\u6807\u5fd7 SUBS R0, R1, #0x10 ; R0 &#061; R1 \u2212 0x10&#xff0c;\u66f4\u65b0N\/Z\/C\/V<\/p>\n<p>SUB{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rn&gt;, &lt;Rm&gt;{, &lt;shift&gt;}<\/p>\n<p>\u4f8b&#xff1a; SUB R0, R1, R2 ; R0 &#061; R1 \u2212 R2 SUB R0, R1, R2, LSL #1 ; R0 &#061; R1 \u2212 (R2 &lt;&lt; 1)<\/p>\n<h4>ldr\u6307\u4ee4<\/h4>\n<p>\u529f\u80fd1&#xff1a;\u5c06\u975e\u7acb\u5373\u6570\u52a0\u8f7d\u5230\u901a\u7528\u5bc4\u5b58\u5668 LDR{&lt;c&gt;}{&lt;q&gt;} &lt;Rt&gt;, &lt;label&gt; <\/p>\n<p>\u4f8b&#xff1a;\u5982ldr r0, &#061;0x2FAB4<\/p>\n<p>\u529f\u80fd2&#xff1a;\u5c06RAM\u4e2d\u7684\u6570\u636e\u52a0\u8f7d\u5230\u901a\u7528\u5bc4\u5b58\u5668 LDR&lt;c&gt; &lt;Rt&gt;, [&lt;Rn&gt;{, #&#043;\/-&lt;imm12&gt;}]<\/p>\n<p>\u4f8b&#xff1a;ldr r0&#xff0c;[r1&#xff0c;&#xff03;4]&#xff1b;\u5c06\u5185\u5b58\u5730\u5740\u4e3aR1&#043;4\u7684\u5b57\u6570\u636e\u8bfb\u5165\u5bc4\u5b58\u5668R0<\/p>\n<p>LDR&lt;c&gt; &lt;Rt&gt;, [&lt;Rn&gt;], #&#043;\/-&lt;imm12&gt;<\/p>\n<p>\u4f8b&#xff1a;ldr r0, [r1], #8 ;\u5c06\u5185\u5b58\u5730\u5740R1\u7684\u5b57\u6570\u636e\u8bfb\u5165r0,\u4e4b\u540er1&#043;8<\/p>\n<p>LDR&lt;c&gt; &lt;Rt&gt;, [&lt;Rn&gt;, #&#043;\/-&lt;imm12&gt;]!<\/p>\n<p>\u4f8b&#xff1a;LDR R0&#xff0c;[R1&#xff0c;&#xff03;8] &#xff01; &#xff1b;\u5c06\u5b58\u50a8\u5668\u5730\u5740\u4e3aR1&#043;8\u7684\u5b57\u6570\u636e\u8bfb\u5165\u5bc4\u5b58\u5668R0&#xff0c;\u5e76\u5c06\u65b0\u5730\u5740R1&#xff0b;8\u5199\u5165R1\u3002<\/p>\n<h4>str\u6307\u4ee4<\/h4>\n<p>\u5c06\u901a\u7528\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u5199\u5165\u5230RAM\u4e2d<\/p>\n<p>str r1<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span>r0<span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">;<\/span><span class=\"token operator\">*<\/span>r0 <span class=\"token operator\">&#061;<\/span> r1<br \/>\nstr r1<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span>r0<span class=\"token punctuation\">,<\/span> #<span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">;<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span>r0 <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> r1<br \/>\nstr r1<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span>r0<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> #<span class=\"token number\">4<\/span> <span class=\"token punctuation\">;<\/span><span class=\"token operator\">*<\/span>r0<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">&#061;<\/span> r1<br \/>\nstr r1<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span>r0<span class=\"token punctuation\">,<\/span> #<span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">!<\/span> <span class=\"token punctuation\">;<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&#043;&#043;<\/span>r0 <span class=\"token operator\">&#061;<\/span> r1<\/p>\n<h4>bic\u6307\u4ee4<\/h4>\n<p>\u5c06\u67d0\u4e2a\u901a\u7528\u5bc4\u5b58\u5668\u6e05\u96f6&#xff08;\u64cd\u4f5c\u6570\u4e2d\u4e3abit1\u7684\u4f4d\u6e050)&#xff0c;\u6e050\u7ed3\u679c\u5199\u56de\u5230\u901a\u7528\u5bc4\u5b58\u5668\u3002 BIC{S}&lt;c&gt; &lt;Rd&gt;, &lt;Rn&gt;, #&lt;const&gt;&#xff1b; \u5c06rn\u4e2d\u7684\u5b57\u6570\u636econst\u4e3a1\u7684\u6bd4\u7279\u6e05\u96f6&#xff0c;\u628a\u7ed3\u679c\u653e\u5165rd\u3002<\/p>\n<p>\u4f8b&#xff1a; mov r0, #0xff bic r0, #1 \u6b64\u65f6r0\u4e2d\u7684\u503c\u4e3a0xfe<\/p>\n<h4>orr\u6307\u4ee4<\/h4>\n<p>\u5c06\u67d0\u4e2a\u901a\u7528\u5bc4\u5b58\u5668\u7f6e1&#xff08;\u64cd\u4f5c\u6570\u4e2d\u4e3abit1\u7684\u4f4d\u7f6e1)&#xff0c;\u7f6e1\u7ed3\u679c\u5199\u56de\u5230\u901a\u7528\u5bc4\u5b58\u5668<\/p>\n<p>\u4f8b&#xff1a; mov r0, #0 orr r0, #(1 &lt;&lt; 6) ;0100 0000 \u6b64\u65f6r0\u4e2d\u7684\u503c\u4e3a0100 0000\u3002<\/p>\n<h4>CMP\u6307\u4ee4<\/h4>\n<p>\u6bd4\u8f83\u4e24\u4e2a\u5bc4\u5b58\u5668\u7684\u503c\u6216\u8005\u6bd4\u8f83\u4e00\u4e2a\u5bc4\u5b58\u5668\u548c\u7acb\u5373\u6570\u7684\u503c&#xff0c;\u5176\u539f\u7406\u662f\u5bf9\u5f85\u6bd4\u8f83\u7684\u4e24\u4e2a\u6570\u6c42\u5dee&#xff0c;\u770b\u7ed3\u679c\u662f\u5426\u4e3a0&#xff0c;\u8fd9\u4e2a\u6307\u4ee4\u4f1a\u65e0\u6761\u4ef6\u4fee\u6539N,V,C,Z\u4f4d\u3002<\/p>\n<p>\u4f8b&#xff1a; mov r0, #100 cmp r0, #100 \u4f1a\u5bfc\u81f4Z\u7f6e\u4f4d&#xff0c;\u4ece\u6761\u4ef6\u7801\u8868\u53ef\u77e5&#xff0c;\u53ea\u8981Z\u7f6e\u4f4d\u5c31\u662f\u4e24\u6570\u76f8\u7b49\u3002<\/p>\n<h4>b\u6307\u4ee4<\/h4>\n<p>\u5b9e\u73b0\u65e0\u6761\u4ef6\u8df3\u8f6c&#xff1b; b\u6307\u4ee4\u6761\u4ef6\u5206\u652f b\u6307\u4ee4\u5faa\u73af b\u51fd\u6570\u8c03\u7528 bl\u6307\u4ee4&#xff1a;\u51fd\u6570\u8df3\u8f6c\u524d&#xff0c;\u4f1a\u5c06\u51fd\u6570\u8fd4\u56de\u5730\u5740\u4fdd\u5b58\u5230lr\u5bc4\u5b58\u5668&#xff1b; bx\u6307\u4ee4&#xff1a;bx lr \u7b49\u4ef7\u4e8emov pc, lr&#xff0c;bx\u6307\u4ee4\u52a0\u4e00\u4e2a\u5730\u5740\u3002<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155645-6aaabc3db05ff.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155645-6aaabc3dd1266.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u56db\u3001s\u540e\u7f00<\/h3>\n<p>\u6c47\u7f16\u6307\u4ee4\u7684 s \u540e\u7f00&#xff0c;\u51e0\u4e4e\u6240\u6709\u7684\u6c47\u7f16\u6307\u4ee4\u90fd\u53ef\u4ee5\u5728\u6307\u4ee4\u540e\u9762\u52a0\u4e0a s \u540e\u7f00&#xff0c;s \u540e\u7f00\u7684\u542b\u4e49\u662f\u5728\u6307\u4ee4\u6267\u884c\u8fc7\u7a0b\u4e2d\u4f1a\u66f4\u65b0 cpsr \u5bc4\u5b58\u5668\u7684 N,V,C,Z \u4f4d\u3002<\/p>\n<p>\u4f8b&#xff1a;<\/p>\n<ul>\n<li>ADDS R3,R0,R1 ; R3 &#061; 0&#xff0c;\u5e26S&#xff0c;\u66f4\u65b0\u6807\u5fd7&#xff1a;Z&#061;1&#xff0c;C&#061;1<\/li>\n<li>SUBS R3,R0,R1 ; R3 &#061; 0xFFFFFFFB&#xff0c;\u5e26S\u66f4\u65b0\u6807\u5fd7; \u7ed3\u679c\u8d1f\u6570 N&#061;1&#xff1b;\u53d1\u751f\u501f\u4f4d C&#061;0&#xff1b;\u65e0\u7b26\u53f7\u6ea2\u51faV&#061;0&#xff1b;Z&#061;0<\/li>\n<li>\u2026<\/li>\n<\/ul>\n<h3>\u4e94\u3001ARM CPSR \u5e38\u7528\u6761\u4ef6\u7801<\/h3>\n<table>\n<tr>\u540e\u7f00\u82f1\u6587\u5168\u79f0\u5224\u65ad\u6761\u4ef6\u542b\u4e49\u7c7b\u578b<\/tr>\n<tbody>\n<tr>\n<td>EQ<\/td>\n<td>Equal<\/td>\n<td>Z&#061;1<\/td>\n<td>\u7b49\u4e8e<\/td>\n<td>\u901a\u7528<\/td>\n<\/tr>\n<tr>\n<td>NE<\/td>\n<td>Not Equal<\/td>\n<td>Z&#061;0<\/td>\n<td>\u4e0d\u7b49\u4e8e<\/td>\n<td>\u901a\u7528<\/td>\n<\/tr>\n<tr>\n<td>CS\/HS<\/td>\n<td>Carry Set \/ Higher or Same<\/td>\n<td>C&#061;1<\/td>\n<td>\u8fdb\u4f4d\u7f6e1 \/ \u65e0\u7b26\u53f7\u2265<\/td>\n<td>\u65e0\u7b26\u53f7\u6bd4\u8f83<\/td>\n<\/tr>\n<tr>\n<td>CC\/LO<\/td>\n<td>Carry Clear \/ Lower<\/td>\n<td>C&#061;0<\/td>\n<td>\u8fdb\u4f4d\u6e05\u96f6 \/ \u65e0\u7b26\u53f7&#xff1c;<\/td>\n<td>\u65e0\u7b26\u53f7\u6bd4\u8f83<\/td>\n<\/tr>\n<tr>\n<td>MI<\/td>\n<td>Minus<\/td>\n<td>N&#061;1<\/td>\n<td>\u7ed3\u679c\u4e3a\u8d1f\u6570<\/td>\n<td>\u7b26\u53f7\u5224\u65ad<\/td>\n<\/tr>\n<tr>\n<td>PL<\/td>\n<td>Plus<\/td>\n<td>N&#061;0<\/td>\n<td>\u7ed3\u679c\u975e\u8d1f&#xff08;\u22650&#xff09;<\/td>\n<td>\u7b26\u53f7\u5224\u65ad<\/td>\n<\/tr>\n<tr>\n<td>VS<\/td>\n<td>Overflow Set<\/td>\n<td>V&#061;1<\/td>\n<td>\u6709\u7b26\u53f7\u6ea2\u51fa<\/td>\n<td>\u6ea2\u51fa\u5224\u65ad<\/td>\n<\/tr>\n<tr>\n<td>VC<\/td>\n<td>Overflow Clear<\/td>\n<td>V&#061;0<\/td>\n<td>\u65e0\u6709\u7b26\u53f7\u6ea2\u51fa<\/td>\n<td>\u6ea2\u51fa\u5224\u65ad<\/td>\n<\/tr>\n<tr>\n<td>GT<\/td>\n<td>Greater Than<\/td>\n<td>N&#061;&#061;V &amp;&amp; Z&#061;&#061;0<\/td>\n<td>\u6709\u7b26\u53f7&#xff1e;<\/td>\n<td>\u6709\u7b26\u53f7\u6bd4\u8f83<\/td>\n<\/tr>\n<tr>\n<td>GE<\/td>\n<td>Greater or Equal<\/td>\n<td>N&#061;&#061;V<\/td>\n<td>\u6709\u7b26\u53f7\u2265<\/td>\n<td>\u6709\u7b26\u53f7\u6bd4\u8f83<\/td>\n<\/tr>\n<tr>\n<td>LT<\/td>\n<td>Less Than<\/td>\n<td>N!&#061;V<\/td>\n<td>\u6709\u7b26\u53f7&#xff1c;<\/td>\n<td>\u6709\u7b26\u53f7\u6bd4\u8f83<\/td>\n<\/tr>\n<tr>\n<td>LE<\/td>\n<td>Less or Equal<\/td>\n<td>&#096;N!&#061;V<\/td>\n<td><\/td>\n<td>Z&#061;&#061;1&#096;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4f8b&#xff1a;<\/p>\n<ul>\n<li>\n<p>CMP R0, R1 ; R0\u2011R1&#xff0c;\u66f4\u65b0\u6807\u5fd7&#xff0c;Z&#061;1 ADDEQ R2, R2, #1 ; \u2705\u6761\u4ef6\u6210\u7acb&#xff0c;R2 &#061; R2 &#043;1<\/p>\n<\/li>\n<li>\n<p>cmp r0, r1 blt lable1 bgt lable2 \u6267\u884c R0\u2011R1 \u7684\u8fd0\u7b97\u5e76\u66f4\u65b0 CPSR \u72b6\u6001\u6807\u5fd7&#xff0c;\u4e0d\u4fdd\u5b58\u8fd0\u7b97\u7ed3\u679c&#xff1b;blt lable1\u4e3a\u6709\u7b26\u53f7\u5c0f\u4e8e\u6761\u4ef6\u8df3\u8f6c&#xff0c;\u82e5\u6ee1\u8db3\u6709\u7b26\u53f7 R0&#xff1c;R1&#xff08;N\u2260V&#xff09;&#xff0c;\u5c31\u8df3\u8f6c\u5230 lable1&#xff1b;bgt lable2\u4e3a\u6709\u7b26\u53f7\u5927\u4e8e\u6761\u4ef6\u8df3\u8f6c&#xff0c;\u82e5\u6ee1\u8db3\u6709\u7b26\u53f7 R0&#xff1e;R1&#xff08;N&#061;&#061;V \u4e14 Z&#061;0&#xff09;&#xff0c;\u5c31\u8df3\u8f6c\u5230 lable2&#xff1b;<\/p>\n<\/li>\n<\/ul>\n<h3>\u516d\u3001\u6808\u7684\u5206\u7c7b<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155645-6aaabc3de5c62.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6ee1\u6808\/\u7a7a\u6808&#xff08;\u662f\u4e00\u79cd\u7ed3\u6784&#xff0c;\u4e0d\u662f\u4f20\u7edf\u5b57\u9762\u610f\u601d\u7684\u6ee1\u7a7a&#xff09;&#xff1a;\u6839\u636e\u6808\u9876\u6240\u5728\u4f4d\u7f6e\u662f\u5426\u5b58\u6709\u5143\u7d20\u786e\u5b9a\u3002 \u6808\u9876\u6240\u5728\u4f4d\u7f6e\u4e00\u76f4\u5b58\u6709\u5143\u7d20\u79f0\u4e3a\u6ee1\u6808&#xff0c;\u5148\u79fb\u52a8\u6808\u9876\u518d\u5b58\u5165\u6570\u636e&#xff1b; \u6808\u9876\u6240\u5728\u4f4d\u7f6e\u4e00\u76f4\u6ca1\u6709\u5143\u7d20\u79f0\u4e3a\u7a7a\u6808&#xff0c;\u5148\u5b58\u5165\u6570\u636e\u518d\u79fb\u52a8\u6808\u9876\u3002<\/p>\n<p>\u589e\u6808\/\u51cf\u6808&#xff1a;\u6839\u636e\u6808\u7684\u751f\u957f\u65b9\u5411\u786e\u5b9a\u3002 \u5165\u6808\u6570\u636e\u65f6&#xff0c;\u6808\u9876\u5411\u5185\u5b58\u9ad8\u5730\u5740\u79fb\u52a8&#xff0c;\u79f0\u4e3a\u589e\u6808&#xff1b; \u5165\u6808\u6570\u636e\u65f6&#xff0c;\u6808\u9876\u5411\u5185\u5b58\u4f4e\u5730\u5740\u79fb\u52a8&#xff0c;\u79f0\u4e3a\u51cf\u6808&#xff0c;<\/p>\n<p>\u6ce8\u610f&#xff1a;ARM\u4e2d\u7684\u6808\u7ed3\u6784\u4e3a&#xff1a;\u6ee1\u51cf\u6808\u3002<\/p>\n<h3>\u4e03\u3001\u6c47\u7f16\u548cC\u8bed\u8a00\u6df7\u5408\u7f16\u7a0b<\/h3>\n<p>\u6c47\u7f16\u8c03\u7528C\u51fd\u6570C\u8c03\u7528\u6c47\u7f16\u51fd\u6570<\/p>\n<h4>7.1 \u6c47\u7f16\u8c03\u7528C\u51fd\u6570<\/h4>\n<p>\u6c47\u7f16\u548cC\u8bed\u8a00\u6df7\u5408\u7f16\u7a0b(\u6c47\u7f16\u8c03\u7528C\u51fd\u6570C\u8c03\u7528\u6c47\u7f16\u51fd\u6570) \u6c47\u7f16\u5982\u4f55\u5411c\u8bed\u8a00\u4f20\u53c2: C\u8bed\u8a00\u5c06\u51fd\u6570\u8fd0\u884c\u7ed3\u679c\u8fd4\u56de\u7ed9R0\u5bc4\u5b58\u5668 \u5f53\u53c2\u6570\u5c0f\u4e8e\u7b49\u4e8e4\u4e2a\u65f6&#xff0c;\u901a\u8fc7\u901a\u7528\u5bc4\u5b58\u5668\u8fdb\u884c\u4f20\u53c2(R0-R3) <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155646-6aaabc3e1c6ca.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5f53\u53c2\u6570\u8d85\u8fc74\u4e2a\u65f6&#xff0c;\u5fc5\u987b\u901a\u8fc7\u6808\u8fdb\u884c\u4f20\u53c2(\u5165\u6808\u4fdd\u62a4\u51fa\u6808\u6062\u590d) <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155646-6aaabc3e32aea.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>7.2 C\u8c03\u7528\u6c47\u7f16\u51fd\u6570<\/h4>\n<p>C\u8bed\u8a00\u5411\u6c47\u7f16\u51fd\u6570\u4f20\u53c2&#xff0c;\u53c2\u6570\u4f1a\u88ab\u4fdd\u5b58\u5230\u901a\u7528\u5bc4\u5b58\u5668\u6c47\u7f16\u51fd\u6570\u7684\u7ed3\u679c\u901a\u8fc7R0\u5bc4\u5b58\u5668\u8fd4\u56de\u7ed9C\u8bed\u8a00 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916155646-6aaabc3e499e3.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u516b\u3001\u5207\u6362\u5904\u7406\u5668\u5de5\u4f5c\u6a21\u5f0f\u4e3aUSER\u6a21\u5f0f<\/h3>\n<p>1.\u5c06cpsr\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u8bfb\u5230R0\u5bc4\u5b58\u5668 2.\u5c06R0\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u4fee\u6539\u4e3a10000 3.\u5c06R0\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u5199\u56de\u5230cpsr\u5bc4\u5b58\u5668 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