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* 707Kartik K. Agaram2015-02-051-6/+6
* 702Kartik K. Agaram2015-02-011-9/+6
* 701 - down arrow to navigate to next historyKartik K. Agaram2015-02-011-0/+35
* 700Kartik K. Agaram2015-02-011-27/+43
* 699 - yup, hack of 697 no longer neededKartik K. Agaram2015-02-011-6/+0
* 698 - give process-key its own scopeKartik K. Agaram2015-02-011-34/+34
* 696 - hacky solution, but I think <up> works nowKartik K. Agaram2015-02-011-5/+9
* 695 - another attempt to handle strings in historyKartik K. Agaram2015-02-011-15/+13
* 694Kartik K. Agaram2015-02-011-32/+0
* 693 - color-repl now uses keyboard/screen parametersKartik K. Agaram2015-02-011-30/+43
* 690 - convention: '$' commands for debugging onlyKartik K. Agaram2015-02-011-48/+49
* 688 - <up> for history kinda sorta worksKartik K. Agaram2015-01-311-3/+84
* 686 - too over-zealous with continuationsKartik K. Agaram2015-01-311-21/+15
* 685Kartik K. Agaram2015-01-301-3/+3
* 684Kartik K. Agaram2015-01-301-1/+9
* 683Kartik K. Agaram2015-01-301-16/+15
* 682Kartik K. Agaram2015-01-291-2/+6
* 681Kartik K. Agaram2015-01-291-3/+3
* 680Kartik K. Agaram2015-01-291-16/+17
* 679 - finally extract 'process-key' into its own functionKartik K. Agaram2015-01-291-145/+152
* 678Kartik K. Agaram2015-01-291-1/+0
* 674 - eliminate the other labelKartik K. Agaram2015-01-291-4/+8
* 673Kartik K. Agaram2015-01-291-4/+0
* 672 - replace label 'next-key' with continuationKartik K. Agaram2015-01-291-14/+35
* 671 - starting to add history supportKartik K. Agaram2015-01-291-2/+8
* 670 - get rid of integer-bufferKartik K. Agaram2015-01-291-20/+20
* 669 - bugfix in escaped charactersKartik K. Agaram2015-01-291-2/+2
* 668 - continue read on comments and newlinesKartik K. Agaram2015-01-291-2/+21
* 667Kartik K. Agaram2015-01-291-0/+2
* 666 - first-class continuations!Kartik K. Agaram2015-01-281-12/+21
* 664 - new, wart-like promptKartik K. Agaram2015-01-281-1/+4
* 663 - exit repl on ctrl-dKartik K. Agaram2015-01-281-0/+7
* 662 - abort current command cleanly on ctrl-gKartik K. Agaram2015-01-281-5/+21
* 661Kartik K. Agaram2015-01-281-32/+39
* 660Kartik K. Agaram2015-01-281-1/+3
* 659Kartik K. Agaram2015-01-281-0/+2
* 656Kartik K. Agaram2015-01-281-1/+1
* 655 - repl app can now backspace into strings, etc.Kartik K. Agaram2015-01-281-4/+29
* 654Kartik K. Agaram2015-01-281-14/+14
* 653Kartik K. Agaram2015-01-281-11/+53
* 652Kartik K. Agaram2015-01-281-2/+3
* 651 - new data structure in repl: list of backslash escapesKartik K. Agaram2015-01-281-6/+17
* 650Kartik K. Agaram2015-01-281-1/+1
* 649 - support #\( and #\) in replKartik K. Agaram2015-01-281-2/+12
* 648Kartik K. Agaram2015-01-271-17/+21
* 647 - bugfixKartik K. Agaram2015-01-271-1/+2
* 646Kartik K. Agaram2015-01-271-1/+1
* 645Kartik K. Agaram2015-01-271-2/+7
* 644 - backspacing out from within strings/commentsKartik K. Agaram2015-01-271-12/+23
* 643 - bug in use-before-set logicKartik K. Agaram2015-01-271-7/+0
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-30 12:47:06 +0000
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>Mu - linux/ex3.subx</title>
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<a href='https://github.com/akkartik/mu/blob/main/linux/ex3.subx'>https://github.com/akkartik/mu/blob/main/linux/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:</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment">#   $ bootstrap/bootstrap translate apps/ex3.subx -o apps/ex3</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment">#   $ bootstrap/bootstrap run 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 $?</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment">#   55</span>
<span id="L9" class="LineNr"> 9 </span>
<span id="L10" class="LineNr">10 </span>== code
<span id="L11" class="LineNr">11 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
<span id="L12" class="LineNr">12 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
<span id="L13" class="LineNr">13 </span><span class="subxS1Comment"># . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
<span id="L14" class="LineNr">14 </span>
<span id="L15" class="LineNr">15 </span><span class="SpecialChar">Entry</span>:
<span id="L16" class="LineNr">16 </span>    <span class="subxComment"># result: ebx = 0</span>
<span id="L17" class="LineNr">17 </span>    bb/copy-to-ebx  0/imm32
<span id="L18" class="LineNr">18 </span>    <span class="subxComment"># counter: ecx = 1</span>
<span id="L19" class="LineNr">19 </span>    b9/copy-to-ecx  1/imm32
<span id="L20" class="LineNr">20 </span>
<span id="L21" class="LineNr">21 </span><span class="Constant">$loop</span>:
<span id="L22" class="LineNr">22 </span>    <span class="subxComment"># if (counter &gt; 10) break</span>
<span id="L23" class="LineNr">23 </span>    81          7/subop/compare     3/mod/direct    1/rm32/ecx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xa/imm32         <span class="subxComment"># compare ecx</span>
<span id="L24" class="LineNr">24 </span>    7f/jump-if-&gt;  $exit/disp8
<span id="L25" class="LineNr">25 </span>    <span class="subxComment"># result += counter</span>
<span id="L26" class="LineNr">26 </span>    01/add                          3/mod/direct    3/rm32/ebx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># add ecx to ebx</span>
<span id="L27" class="LineNr">27 </span>    <span class="subxComment"># ++counter</span>
<span id="L28" class="LineNr">28 </span>    41/increment-ecx
<span id="L29" class="LineNr">29 </span>    <span class="subxComment"># loop</span>
<span id="L30" class="LineNr">30 </span>    eb/jump  $loop/disp8
<span id="L31" class="LineNr">31 </span>
<span id="L32" class="LineNr">32 </span><span class="Constant">$exit</span>:
<span id="L33" class="LineNr">33 </span>    <span class="subxComment"># exit(ebx)</span>
<span id="L34" class="LineNr">34 </span>    e8/call  <a href='000init.subx.html#L18'>syscall_exit</a>/disp32
<span id="L35" class="LineNr">35 </span>
<span id="L36" class="LineNr">36 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
</pre>
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