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Kartik Agaram 2021-06-15 20:41:34 -07:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>~/play/mu/linux/advent2017/1a.mu.html</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
<meta name="colorscheme" content="minimal-dark">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #a8a8a8; }
body { font-family: monospace; color: #000000; background-color: #a8a8a8; }
* { font-size: 1em; }
.PreProc { color: #c000c0; }
.muRegEax { color: #875f00; }
.muComment { color: #005faf; }
.Constant { color: #008787; }
.muRegEdx { color: #878700; }
.muRegEbx { color: #8787af; }
.muRegEsi { color: #87d787; }
.muRegEdi { color: #87ffd7; }
.Delimiter { color: #c000c0; }
.muFunction { color: #af5f00; text-decoration: underline; }
.Special { color: #ff6060; }
-->
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</head>
<body>
<pre id='vimCodeElement'>
<span class="PreProc">fn</span> <span class="muFunction">main</span><span class="PreProc"> -&gt; </span>_/<span class="muRegEbx">ebx</span>: int <span class="Delimiter">{</span>
<span class="PreProc">var</span> input_stream: (stream byte <span class="Constant">0x8000</span>)
<span class="PreProc">var</span> input_stream_addr/<span class="muRegEsi">esi</span>: (addr stream byte) <span class="Special">&lt;-</span> address input_stream
<span class="PreProc">var</span> sum/<span class="muRegEdi">edi</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
read-line-from-real-keyboard input_stream_addr
<span class="PreProc">var</span> temp/<span class="muRegEax">eax</span>: int <span class="Special">&lt;-</span> read_digit input_stream_addr
<span class="PreProc">var</span> first_digit/<span class="muRegEbx">ebx</span>: int <span class="Special">&lt;-</span> copy temp
<span class="PreProc">var</span> this_digit/<span class="muRegEdx">edx</span>: int <span class="Special">&lt;-</span> copy temp
<span class="Delimiter">{</span>
<span class="PreProc">var</span> done?/<span class="muRegEax">eax</span>: boolean <span class="Special">&lt;-</span> stream-empty? input_stream_addr
compare done?, <span class="Constant">1</span>
<span class="PreProc">break-if-=</span>
<span class="PreProc">var</span> next_digit/<span class="muRegEax">eax</span>: int <span class="Special">&lt;-</span> read_digit input_stream_addr
<span class="muComment"># hacky newline check</span>
compare next_digit, <span class="Constant">0</span>
<span class="PreProc">break-if-&lt;</span>
<span class="Delimiter">{</span>
compare this_digit, next_digit
<span class="PreProc">break-if-!=</span>
sum <span class="Special">&lt;-</span> add this_digit
<span class="Delimiter">}</span>
this_digit <span class="Special">&lt;-</span> copy next_digit
<span class="PreProc">loop</span>
<span class="Delimiter">}</span>
<span class="muComment"># the last iteration will need to compare the last number to the first</span>
<span class="Delimiter">{</span>
compare this_digit, first_digit
<span class="PreProc">break-if-!=</span>
sum <span class="Special">&lt;-</span> add this_digit
<span class="Delimiter">}</span>
print-int32-decimal <span class="Constant">0</span>, sum
<span class="PreProc">return</span> <span class="Constant">0</span>/ok
<span class="Delimiter">}</span>
<span class="PreProc">fn</span> <span class="muFunction">read_digit</span> input_stream_addr: (addr stream byte)<span class="PreProc"> -&gt; </span>_/<span class="muRegEax">eax</span>: int <span class="Delimiter">{</span>
<span class="PreProc">var</span> next_digit/<span class="muRegEax">eax</span>: byte <span class="Special">&lt;-</span> read-byte input_stream_addr
next_digit <span class="Special">&lt;-</span> subtract <span class="Constant">0x30</span>
<span class="PreProc">var</span> next_digit/<span class="muRegEax">eax</span>: int <span class="Special">&lt;-</span> copy next_digit
<span class="PreProc">return</span> next_digit
<span class="Delimiter">}</span>
</pre>
</body>
</html>
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