1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
<!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>Mu - apps/advent2020/5b.mu</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="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-light">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.muComment { color: #005faf; }
.LineNr { }
.SpecialChar { color: #d70000; }
.Constant { color: #008787; }
.muFunction { color: #af5f00; text-decoration: underline; }
.Delimiter { color: #c000c0; }
.PreProc { color: #c000c0; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
var lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/master/apps/advent2020/5b.mu'>https://github.com/akkartik/mu/blob/master/apps/advent2020/5b.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># <a href="https://adventofcode.com/2020/day/5">https://adventofcode.com/2020/day/5</a></span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment"># To run (on Linux):</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># $ git clone <a href="https://github.com/akkartik/mu">https://github.com/akkartik/mu</a></span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment"># $ cd mu</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># $ ./translate_mu apps/advent2020/5b.mu</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment"># $ ./a.elf < input</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment">#</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment"># You'll need to register to download the 'input' file for yourself.</span>
<span id="L10" class="LineNr">10 </span>
<span id="L11" class="LineNr">11 </span><span class="PreProc">fn</span> <span class="muFunction">main</span><span class="PreProc"> -> </span>_/<span class="Constant">ebx</span>: int <span class="Delimiter">{</span>
<span id="L12" class="LineNr">12 </span> <span class="PreProc">var</span> pass-storage: (array int <span class="Constant">0x400</span>) <span class="muComment"># 1k ints</span>
<span id="L13" class="LineNr">13 </span> <span class="PreProc">var</span> pass/<span class="Constant">esi</span>: (addr array int) <span class="SpecialChar"><-</span> address pass-storage
<span id="L14" class="LineNr">14 </span> <span class="muComment"># phase 1: populate pass array</span>
<span id="L15" class="LineNr">15 </span> <span class="PreProc">var</span> line-storage: (stream byte <span class="Constant">0x10</span>) <span class="muComment"># 16 bytes is enough</span>
<span id="L16" class="LineNr">16 </span> <span class="PreProc">var</span> line/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar"><-</span> address line-storage
<span id="L17" class="LineNr">17 </span> <span class="Delimiter">{</span>
<span id="L18" class="LineNr">18 </span> <span class="muComment"># read line from stdin</span>
<span id="L19" class="LineNr">19 </span> <a href='../../106stream.subx.html#L17'>clear-stream</a> line
<span id="L20" class="LineNr">20 </span> <a href='../../305keyboard.subx.html#L158'>read-line-from-real-keyboard</a> line
<span id="L21" class="LineNr">21 </span> <span class="muComment"># if line is empty (not even a newline), quit</span>
<span id="L22" class="LineNr">22 </span> <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar"><-</span> <a href='../../309stream.subx.html#L6'>stream-empty?</a> line
<span id="L23" class="LineNr">23 </span> compare done?, <span class="Constant">0</span> <span class="muComment"># false</span>
<span id="L24" class="LineNr">24 </span> <span class="PreProc">break-if-!=</span>
<span id="L25" class="LineNr">25 </span> <span class="muComment"># process line</span>
<span id="L26" class="LineNr">26 </span> <span class="PreProc">var</span> seat-id/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> convert-from-binary line
<span id="L27" class="LineNr">27 </span> <span class="PreProc">var</span> dest/<span class="Constant">eax</span>: (addr int) <span class="SpecialChar"><-</span> index pass, seat-id
<span id="L28" class="LineNr">28 </span> copy-to *dest, <span class="Constant">1</span>
<span id="L29" class="LineNr">29 </span> <span class="PreProc">loop</span>
<span id="L30" class="LineNr">30 </span> <span class="Delimiter">}</span>
<span id="L31" class="LineNr">31 </span> <span class="muComment"># phase 2: skip empty seats</span>
<span id="L32" class="LineNr">32 </span> <span class="PreProc">var</span> i/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L33" class="LineNr">33 </span> <span class="Delimiter">{</span>
<span id="L34" class="LineNr">34 </span> compare i, <span class="Constant">0x400</span>
<span id="L35" class="LineNr">35 </span> <span class="PreProc">break-if->=</span>
<span id="L36" class="LineNr">36 </span> <span class="PreProc">var</span> src/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar"><-</span> index pass, i
<span id="L37" class="LineNr">37 </span> compare *src, <span class="Constant">0</span>
<span id="L38" class="LineNr">38 </span> <span class="PreProc">break-if-!=</span>
<span id="L39" class="LineNr">39 </span> i <span class="SpecialChar"><-</span> increment
<span id="L40" class="LineNr">40 </span> <span class="PreProc">loop</span>
<span id="L41" class="LineNr">41 </span> <span class="Delimiter">}</span>
<span id="L42" class="LineNr">42 </span> <span class="muComment"># phase 3: skip non-empty seats</span>
<span id="L43" class="LineNr">43 </span> <span class="Delimiter">{</span>
<span id="L44" class="LineNr">44 </span> compare i, <span class="Constant">0x400</span>
<span id="L45" class="LineNr">45 </span> <span class="PreProc">break-if->=</span>
<span id="L46" class="LineNr">46 </span> <span class="PreProc">var</span> src/<span class="Constant">ecx</span>: (addr int) <span class="SpecialChar"><-</span> index pass, i
<span id="L47" class="LineNr">47 </span> compare *src, <span class="Constant">0</span>
<span id="L48" class="LineNr">48 </span> <span class="PreProc">break-if-=</span>
<span id="L49" class="LineNr">49 </span> i <span class="SpecialChar"><-</span> increment
<span id="L50" class="LineNr">50 </span> <span class="PreProc">loop</span>
<span id="L51" class="LineNr">51 </span> <span class="Delimiter">}</span>
<span id="L52" class="LineNr">52 </span> <a href='../../405screen.mu.html#L480'>print-int32-decimal</a> <span class="Constant">0</span>, i
<span id="L53" class="LineNr">53 </span> <a href='../../405screen.mu.html#L169'>print-string</a> <span class="Constant">0</span>, <span class="Constant">"\n"</span>
<span id="L54" class="LineNr">54 </span> <span class="PreProc">return</span> <span class="Constant">0</span>
<span id="L55" class="LineNr">55 </span><span class="Delimiter">}</span>
<span id="L56" class="LineNr">56 </span>
<span id="L57" class="LineNr">57 </span><span class="PreProc">fn</span> <span class="muFunction">convert-from-binary</span> in: (addr stream byte)<span class="PreProc"> -> </span>_/<span class="Constant">eax</span>: int <span class="Delimiter">{</span>
<span id="L58" class="LineNr">58 </span> <span class="PreProc">var</span> result/<span class="Constant">edi</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L59" class="LineNr">59 </span> <span class="PreProc">var</span> i/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">9</span> <span class="muComment"># loop counter and also exponent</span>
<span id="L60" class="LineNr">60 </span> <span class="Delimiter">{</span>
<span id="L61" class="LineNr">61 </span> compare i, <span class="Constant">0</span>
<span id="L62" class="LineNr">62 </span> <span class="PreProc">break-if-<</span>
<span id="L63" class="LineNr">63 </span> <span class="PreProc">var</span> c/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='../../112read-byte.subx.html#L273'>read-byte</a> in
<span id="L64" class="LineNr">64 </span> <span class="PreProc">var</span> bit/<span class="Constant">edx</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L65" class="LineNr">65 </span> <span class="Delimiter">{</span>
<span id="L66" class="LineNr">66 </span> compare c, <span class="Constant">0x42</span> <span class="muComment"># 'B'</span>
<span id="L67" class="LineNr">67 </span> <span class="PreProc">break-if-!=</span>
<span id="L68" class="LineNr">68 </span> bit <span class="SpecialChar"><-</span> copy <span class="Constant">1</span>
<span id="L69" class="LineNr">69 </span> <span class="Delimiter">}</span>
<span id="L70" class="LineNr">70 </span> <span class="Delimiter">{</span>
<span id="L71" class="LineNr">71 </span> compare c, <span class="Constant">0x52</span> <span class="muComment"># 'R'</span>
<span id="L72" class="LineNr">72 </span> <span class="PreProc">break-if-!=</span>
<span id="L73" class="LineNr">73 </span> bit <span class="SpecialChar"><-</span> copy <span class="Constant">1</span>
<span id="L74" class="LineNr">74 </span> <span class="Delimiter">}</span>
<span id="L75" class="LineNr">75 </span> <span class="PreProc">var</span> bit-value/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> <a href='../../406int32.mu.html#L5'>repeated-shift-left</a> bit, i
<span id="L76" class="LineNr">76 </span> result <span class="SpecialChar"><-</span> add bit-value
<span id="L77" class="LineNr">77 </span> i <span class="SpecialChar"><-</span> decrement
<span id="L78" class="LineNr">78 </span> <span class="PreProc">loop</span>
<span id="L79" class="LineNr">79 </span> <span class="Delimiter">}</span>
<span id="L80" class="LineNr">80 </span> <span class="PreProc">return</span> result
<span id="L81" class="LineNr">81 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|