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<a href='https://github.com/akkartik/mu/blob/master/subx/examples/ex3.subx'>https://github.com/akkartik/mu/blob/master/subx/examples/ex3.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Add the first 10 numbers, and return the result in the exit code.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># To run (from the subx directory):</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># $ subx translate examples/ex3.subx -o examples/ex3</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># $ subx run examples/ex3</span>
<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># Expected result:</span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># $ echo $?</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># 55</span>
<span id="L9" class="LineNr"> 9 </span>
<span id="L10" class="LineNr">10 </span>== code
<span id="L11" class="LineNr">11 </span><span class="subxComment"># instruction effective address register displacement immediate</span>
<span id="L12" class="LineNr">12 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span>
<span id="L13" class="LineNr">13 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span>
<span id="L14" class="LineNr">14 </span>
<span id="L15" class="LineNr">15 </span> <span class="subxComment"># result: EBX = 0</span>
<span id="L16" class="LineNr">16 </span> bb/copy-to-EBX 0/imm32
<span id="L17" class="LineNr">17 </span> <span class="subxComment"># counter: ECX = 1</span>
<span id="L18" class="LineNr">18 </span> b9/copy-to-ECX 1/imm32
<span id="L19" class="LineNr">19 </span>
<span id="L20" class="LineNr">20 </span>$loop:
<span id="L21" class="LineNr">21 </span> <span class="subxComment"># while (counter <= 10)</span>
<span id="L22" class="LineNr">22 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xa/imm32 <span class="subxComment"># compare ECX</span>
<span id="L23" class="LineNr">23 </span> 7f/jump-if-greater $exit/disp8
<span id="L24" class="LineNr">24 </span> <span class="subxComment"># result += counter</span>
<span id="L25" class="LineNr">25 </span> 01/add 3/mod/direct 3/rm32/EBX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># add ECX to EBX</span>
<span id="L26" class="LineNr">26 </span> <span class="subxComment"># ++counter</span>
<span id="L27" class="LineNr">27 </span> 41/inc-ECX
<span id="L28" class="LineNr">28 </span> <span class="subxComment"># loop</span>
<span id="L29" class="LineNr">29 </span> eb/jump $loop/disp8
<span id="L30" class="LineNr">30 </span>
<span id="L31" class="LineNr">31 </span>$exit:
<span id="L32" class="LineNr">32 </span> <span class="subxComment"># syscall(exit, EBX)</span>
<span id="L33" class="LineNr">33 </span> b8/copy-to-EAX 1/imm32
<span id="L34" class="LineNr">34 </span> cd/syscall 0x80/imm8
<span id="L35" class="LineNr">35 </span>
<span id="L36" class="LineNr">36 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span>
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