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authorKartik Agaram <vc@akkartik.com>2018-09-07 15:08:54 -0700
committerKartik Agaram <vc@akkartik.com>2018-09-07 15:08:54 -0700
commit608a7fa8d0faf9a3e3d182d9eabe969804443aab (patch)
tree7e1934d9ef0e8372381c306312591235c4f27110 /html/subx/examples/ex2.subx.html
parenta6517ed821ff39fa56eb3b975799d22497d78a48 (diff)
downloadmu-608a7fa8d0faf9a3e3d182d9eabe969804443aab.tar.gz
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+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - subx/examples/ex2.subx</title>
+<meta name="Generator" content="Vim/8.0">
+<meta name="plugin-version" content="vim7.4_v2">
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+<body onload='JumpToLine();'>
+<pre id='vimCodeElement'>
+<span id="L1" class="LineNr"> 1 </span><span class="SalientComment">## add 1 and 1, and return the result in the exit code</span>
+<span id="L2" class="LineNr"> 2 </span><span class="Comment">#</span>
+<span id="L3" class="LineNr"> 3 </span><span class="Comment"># To run:</span>
+<span id="L4" class="LineNr"> 4 </span><span class="Comment">#   $ subx translate ex2.subx ex2</span>
+<span id="L5" class="LineNr"> 5 </span><span class="Comment">#   $ subx run ex2</span>
+<span id="L6" class="LineNr"> 6 </span><span class="Comment"># Expected result:</span>
+<span id="L7" class="LineNr"> 7 </span><span class="Comment">#   $ echo $?</span>
+<span id="L8" class="LineNr"> 8 </span><span class="Comment">#   2</span>
+<span id="L9" class="LineNr"> 9 </span>
+<span id="L10" class="LineNr">10 </span>== <a href='031check_operands.cc.html#L14'>code</a>
+<span id="L11" class="LineNr">11 </span><span class="Comment"># instruction                     effective address                                                   operand     displacement    immediate</span>
+<span id="L12" class="LineNr">12 </span><span class="Comment"># op          subop               mod             rm32          base        index         scale       r32</span>
+<span id="L13" class="LineNr">13 </span><span class="Comment"># 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
+<span id="L14" class="LineNr">14 </span>  bb/copy                                                                                                                         1/imm32           <span class="Comment"># copy 1 to EBX</span>
+<span id="L15" class="LineNr">15 </span>  81          0/subop/add         3/mod/direct    3/rm32/EBX                                                                      1/imm32           <span class="Comment"># add 1 to EBX</span>
+<span id="L16" class="LineNr">16 </span>  <span class="Comment"># exit(EBX)</span>
+<span id="L17" class="LineNr">17 </span>  b8/copy                                                                                                                         1/imm32           <span class="Comment"># copy 1 to EAX</span>
+<span id="L18" class="LineNr">18 </span>  cd/syscall                                                                                                                      0x80/imm8         <span class="Comment"># int 80h</span>
+<span id="L19" class="LineNr">19 </span>
+<span id="L20" class="LineNr">20 </span><span class="Comment"># vim&#0058;ft=subx</span>
+</pre>
+</body>
+</html>
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