blob: cc77fcce61ca50c508e396f684d62d0bd46feab2 (
plain) (
blame)
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
|
<!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 - mu-init.subx</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-dark">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #a8a8a8; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #a8a8a8; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.subxComment { color: #005faf; }
.LineNr { }
.SpecialChar { color: #d70000; }
.Constant { color: #008787; }
.CommentedCode { color: #8a8a8a; }
-->
</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/main/mu-init.subx'>https://github.com/akkartik/mu/blob/main/mu-init.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Initialize the minimal runtime for Mu programs.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># See translate for how this file is used.</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment">#</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># Mu programs start at a function called 'main' with this signature:</span>
<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk)</span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment">#</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># All tests must pass first (the "power-on unit test").</span>
<span id="L9" class="LineNr"> 9 </span>
<span id="L10" class="LineNr">10 </span>== code
<span id="L11" class="LineNr">11 </span>
<span id="L12" class="LineNr">12 </span><span class="SpecialChar">Entry</span>:
<span id="L13" class="LineNr">13 </span> <span class="subxComment"># initialize stack</span>
<span id="L14" class="LineNr">14 </span> bd/copy-to-ebp 0/imm32
<span id="L15" class="LineNr">15 </span><span class="CommentedCode">#? (main 0 0 Primary-bus-secondary-drive)</span>
<span id="L16" class="LineNr">16 </span> <span class="subxComment"># always first run tests</span>
<span id="L17" class="LineNr">17 </span> (run-tests)
<span id="L18" class="LineNr">18 </span> (<a href='104test.subx.html#L17'>num-test-failures</a>) <span class="subxComment"># => eax</span>
<span id="L19" class="LineNr">19 </span> <span class="subxComment"># call main if tests all passed</span>
<span id="L20" class="LineNr">20 </span> {
<span id="L21" class="LineNr">21 </span> 3d/compare-eax-and 0/imm32
<span id="L22" class="LineNr">22 </span> 75/jump-if-!= <span class="Constant">break</span>/disp8
<span id="L23" class="LineNr">23 </span> (<a href='500fake-screen.mu.html#L364'>clear-real-screen</a>)
<span id="L24" class="LineNr">24 </span> c7 0/subop/copy *<span class="SpecialChar"><a href='103grapheme.subx.html#L170'>Real-screen-cursor-x</a></span> 0/imm32
<span id="L25" class="LineNr">25 </span> c7 0/subop/copy *<span class="SpecialChar"><a href='103grapheme.subx.html#L172'>Real-screen-cursor-y</a></span> 0/imm32
<span id="L26" class="LineNr">26 </span> (main 0 0 <span class="SpecialChar"><a href='boot.subx.html#L899'>Primary-bus-secondary-drive</a></span>)
<span id="L27" class="LineNr">27 </span> }
<span id="L28" class="LineNr">28 </span>
<span id="L29" class="LineNr">29 </span> <span class="subxComment"># hang indefinitely</span>
<span id="L30" class="LineNr">30 </span> {
<span id="L31" class="LineNr">31 </span> eb/jump <span class="Constant">loop</span>/disp8
<span id="L32" class="LineNr">32 </span> }
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|