about summary refs log tree commit diff stats
path: root/html/linux/factorial.subx.html
blob: 9a29907efb78c7080df364bc819dea00be1621e9 (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
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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
<!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 - linux/factorial.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,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-dark">
<style type="text/css">
<!--
pre { 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; }
.SpecialChar { color: #d70000; }
.subxComment { color: #005faf; }
.subxS1Comment { color: #0000af; }
.subxS2Comment { color: #8a8a8a; }
.LineNr { }
.Constant { color: #008787; }
.subxTest { color: #5f8700; }
.subxFunction { color: #af5f00; text-decoration: underline; }
.Normal { color: #000000; background-color: #a8a8a8; padding-bottom: 1px; }
-->
</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/linux/factorial.subx'>https://github.com/akkartik/mu/blob/main/linux/factorial.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="subxComment">## compute the factorial of 5, and print the result</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 [01]*.subx factorial.subx -o factorial</span>
<span id="L5" class="LineNr">  5 </span><span class="subxComment">#   $ bootstrap/bootstrap run factorial</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">#   120</span>
<span id="L9" class="LineNr">  9 </span><span class="subxComment">#</span>
<span id="L10" class="LineNr"> 10 </span><span class="subxComment"># You can also run the automated test suite:</span>
<span id="L11" class="LineNr"> 11 </span><span class="subxComment">#   $ bootstrap/bootstrap run factorial test</span>
<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># Expected output:</span>
<span id="L13" class="LineNr"> 13 </span><span class="subxComment">#   ........</span>
<span id="L14" class="LineNr"> 14 </span><span class="subxComment"># Every '.' indicates a passing test. Failing tests get a 'F'.</span>
<span id="L15" class="LineNr"> 15 </span>
<span id="L16" class="LineNr"> 16 </span>== code
<span id="L17" class="LineNr"> 17 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
<span id="L18" class="LineNr"> 18 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
<span id="L19" class="LineNr"> 19 </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="L20" class="LineNr"> 20 </span>
<span id="L21" class="LineNr"> 21 </span><span class="subxFunction">factorial</span>:  <span class="subxComment"># n: int -&gt; _/eax: int</span>
<span id="L22" class="LineNr"> 22 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L23" class="LineNr"> 23 </span>    55/push-ebp
<span id="L24" class="LineNr"> 24 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
<span id="L25" class="LineNr"> 25 </span>    51/push-ecx
<span id="L26" class="LineNr"> 26 </span>    <span class="subxComment"># if (n &lt;= 1) return 1</span>
<span id="L27" class="LineNr"> 27 </span>    b8/copy-to-eax  1/imm32
<span id="L28" class="LineNr"> 28 </span>    81          7/subop/compare     1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8         1/imm32           <span class="subxComment"># compare *(ebp+8)</span>
<span id="L29" class="LineNr"> 29 </span>    7e/jump-if-&lt;=  $factorial:end/disp8
<span id="L30" class="LineNr"> 30 </span>    <span class="subxComment"># var ecx: int = n-1</span>
<span id="L31" class="LineNr"> 31 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>                        1/r32/ecx   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L32" class="LineNr"> 32 </span>    49/decrement-ecx
<span id="L33" class="LineNr"> 33 </span>    <span class="subxComment"># var eax: int = factorial(n-1)</span>
<span id="L34" class="LineNr"> 34 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L35" class="LineNr"> 35 </span>    51/push-ecx
<span id="L36" class="LineNr"> 36 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L37" class="LineNr"> 37 </span>    e8/call  <a href='factorial.subx.html#L21'>factorial</a>/disp32
<span id="L38" class="LineNr"> 38 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L39" class="LineNr"> 39 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L40" class="LineNr"> 40 </span>    <span class="subxComment"># return n * factorial(n-1)</span>
<span id="L41" class="LineNr"> 41 </span>    f7          4/subop/multiply    1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>                                    8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># multiply *(ebp+8) into eax</span>
<span id="L42" class="LineNr"> 42 </span>    <span class="subxComment"># TODO: check for overflow</span>
<span id="L43" class="LineNr"> 43 </span><span class="Constant">$factorial:end</span>:
<span id="L44" class="LineNr"> 44 </span>    <span class="subxComment"># restore registers</span>
<span id="L45" class="LineNr"> 45 </span>    59/pop-to-ecx
<span id="L46" class="LineNr"> 46 </span>    <span class="subxS1Comment"># . epilogue</span>
<span id="L47" class="LineNr"> 47 </span>    89/copy                         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/ebp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ebp to esp</span>
<span id="L48" class="LineNr"> 48 </span>    5d/pop-to-ebp
<span id="L49" class="LineNr"> 49 </span>    c3/return
<span id="L50" class="LineNr"> 50 </span>
<span id="L51" class="LineNr"> 51 </span><span class="subxTest">test-factorial</span>:
<span id="L52" class="LineNr"> 52 </span>    <span class="subxComment"># factorial(5)</span>
<span id="L53" class="LineNr"> 53 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L54" class="LineNr"> 54 </span>    68/push  5/imm32
<span id="L55" class="LineNr"> 55 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L56" class="LineNr"> 56 </span>    e8/call  <a href='factorial.subx.html#L21'>factorial</a>/disp32
<span id="L57" class="LineNr"> 57 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L58" class="LineNr"> 58 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L59" class="LineNr"> 59 </span>    <span class="subxComment"># check-ints-equal(eax, 120, msg)</span>
<span id="L60" class="LineNr"> 60 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L61" class="LineNr"> 61 </span>    68/push  <span class="Constant">&quot;F - test-factorial&quot;</span>/imm32
<span id="L62" class="LineNr"> 62 </span>    68/push  0x78/imm32/expected-120
<span id="L63" class="LineNr"> 63 </span>    50/push-eax
<span id="L64" class="LineNr"> 64 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L65" class="LineNr"> 65 </span>    e8/call  <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L66" class="LineNr"> 66 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L67" class="LineNr"> 67 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
<span id="L68" class="LineNr"> 68 </span>    <span class="subxComment"># end</span>
<span id="L69" class="LineNr"> 69 </span>    c3/return
<span id="L70" class="LineNr"> 70 </span>
<span id="L71" class="LineNr"> 71 </span><span class="SpecialChar">Entry</span>:  <span class="subxComment"># run tests if necessary, compute `factorial(5)` if not</span>
<span id="L72" class="LineNr"> 72 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L73" class="LineNr"> 73 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
<span id="L74" class="LineNr"> 74 </span>
<span id="L75" class="LineNr"> 75 </span>    <span class="subxComment"># initialize heap (needed by tests elsewhere)</span>
<span id="L76" class="LineNr"> 76 </span>    <span class="subxS1Comment"># . Heap = new-segment(Heap-size)</span>
<span id="L77" class="LineNr"> 77 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L78" class="LineNr"> 78 </span>    68/push  <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span>/imm32
<span id="L79" class="LineNr"> 79 </span>    ff          6/subop/push        0/mod/indirect  5/rm32/.disp32           <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          <span class="SpecialChar"><a href='120allocate.subx.html#L34'>Heap-size</a></span>/disp32                  <span class="subxComment"># push *Heap-size</span>
<span id="L80" class="LineNr"> 80 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L81" class="LineNr"> 81 </span>    e8/call  <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L82" class="LineNr"> 82 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L83" class="LineNr"> 83 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L84" class="LineNr"> 84 </span>
<span id="L85" class="LineNr"> 85 </span>    <span class="subxComment"># if (argc &lt;= 1) return factorial(5)</span>
<span id="L86" class="LineNr"> 86 </span><span class="Constant">$run-main</span>:
<span id="L87" class="LineNr"> 87 </span>    81          7/subop/compare     1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          0/disp8         1/imm32           <span class="subxComment"># compare *ebp</span>
<span id="L88" class="LineNr"> 88 </span>    7f/jump-if-&gt;  $main:run-tests/disp8
<span id="L89" class="LineNr"> 89 </span>    <span class="subxComment"># eax = factorial(5)</span>
<span id="L90" class="LineNr"> 90 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L91" class="LineNr"> 91 </span>    68/push  5/imm32
<span id="L92" class="LineNr"> 92 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L93" class="LineNr"> 93 </span>    e8/call  <a href='factorial.subx.html#L21'>factorial</a>/disp32
<span id="L94" class="LineNr"> 94 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L95" class="LineNr"> 95 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L96" class="LineNr"> 96 </span>    <span class="subxComment"># var buffer/ecx: (stream byte 10)  # number of decimal digits a 32-bit number can have</span>
<span id="L97" class="LineNr"> 97 </span>    81          5/subop/subtract    3/mod/direct    4/rm32/esp   <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"># subtract from esp</span>
<span id="L98" class="LineNr"> 98 </span>    68/push  0xa/imm32/decimal-digits-in-32bit-number
<span id="L99" class="LineNr"> 99 </span>    68/push  0/imm32/read
<span id="L100" class="LineNr">100 </span>    68/push  0/imm32/write
<span id="L101" class="LineNr">101 </span>    89/copy                         3/mod/direct    1/rm32/ecx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ecx</span>
<span id="L102" class="LineNr">102 </span>    <span class="subxComment"># write-int32-decimal(buffer, eax)</span>
<span id="L103" class="LineNr">103 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L104" class="LineNr">104 </span>    50/push-eax
<span id="L105" class="LineNr">105 </span>    51/push-ecx
<span id="L106" class="LineNr">106 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L107" class="LineNr">107 </span>    e8/call  <a href='126write-int-decimal.subx.html#L8'>write-int32-decimal</a>/disp32
<span id="L108" class="LineNr">108 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L109" class="LineNr">109 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L110" class="LineNr">110 </span>    <span class="subxComment"># write-stream(stderr, buffer)</span>
<span id="L111" class="LineNr">111 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L112" class="LineNr">112 </span>    51/push-ecx
<span id="L113" class="LineNr">113 </span>    68/push  2/imm32/stderr
<span id="L114" class="LineNr">114 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L115" class="LineNr">115 </span>    e8/call  <a href='113write-stream.subx.html#L17'>write-stream</a>/disp32
<span id="L116" class="LineNr">116 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L117" class="LineNr">117 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L118" class="LineNr">118 </span>    <span class="subxComment"># write(stderr, Newline)</span>
<span id="L119" class="LineNr">119 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L120" class="LineNr">120 </span>    68/push  <span class="SpecialChar"><a href='102test.subx.html#L82'>Newline</a></span>/imm32
<span id="L121" class="LineNr">121 </span>    68/push  2/imm32/stderr
<span id="L122" class="LineNr">122 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L123" class="LineNr">123 </span>    e8/call  <a href='108write.subx.html#L24'>write</a>/disp32
<span id="L124" class="LineNr">124 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L125" class="LineNr">125 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L126" class="LineNr">126 </span>    <span class="subxComment">#</span>
<span id="L127" class="LineNr">127 </span>    89/copy                         3/mod/direct    3/rm32/ebx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy eax to ebx</span>
<span id="L128" class="LineNr">128 </span>    eb/jump  $main:end/disp8
<span id="L129" class="LineNr">129 </span><span class="Constant">$main:run-tests</span>:
<span id="L130" class="LineNr">130 </span>    <span class="subxComment"># otherwise if first arg is &quot;test&quot;, then return run_tests()</span>
<span id="L131" class="LineNr">131 </span>    <span class="subxComment"># if (!kernel-string-equal?(argv[1], &quot;test&quot;)) goto do-nothing</span>
<span id="L132" class="LineNr">132 </span>    <span class="subxS1Comment"># . eax = kernel-string-equal?(argv[1], &quot;test&quot;)</span>
<span id="L133" class="LineNr">133 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L134" class="LineNr">134 </span>    68/push  <span class="Constant">&quot;test&quot;</span>/imm32
<span id="L135" class="LineNr">135 </span>    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># push *(ebp+8)</span>
<span id="L136" class="LineNr">136 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L137" class="LineNr">137 </span>    e8/call  <a href='103kernel-string-equal.subx.html#L31'>kernel-string-equal?</a>/disp32
<span id="L138" class="LineNr">138 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L139" class="LineNr">139 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L140" class="LineNr">140 </span>    <span class="subxS1Comment"># . if (eax == false) goto do-nothing</span>
<span id="L141" class="LineNr">141 </span>    3d/compare-eax-and  0/imm32/false
<span id="L142" class="LineNr">142 </span>    74/jump-if-=  $main:do-nothing/disp8
<span id="L143" class="LineNr">143 </span>    <span class="subxComment"># run-tests()</span>
<span id="L144" class="LineNr">144 </span>    e8/call  run-tests/disp32
<span id="L145" class="LineNr">145 </span>    <span class="subxComment"># exit(*Num-test-failures)</span>
<span id="L146" class="LineNr">146 </span>    8b/copy                         0/mod/indirect  5/rm32/.disp32           <span class="Normal"> . </span>           <span class="Normal"> . </span>          3/r32/ebx   <span class="SpecialChar"><a href='102test.subx.html#L89'>Num-test-failures</a></span>/disp32          <span class="subxComment"># copy *Num-test-failures to ebx</span>
<span id="L147" class="LineNr">147 </span>    eb/jump  $main:end/disp8
<span id="L148" class="LineNr">148 </span><span class="Constant">$main:do-nothing</span>:
<span id="L149" class="LineNr">149 </span>    bb/copy-to-ebx  0/imm32
<span id="L150" class="LineNr">150 </span><span class="Constant">$main:end</span>:
<span id="L151" class="LineNr">151 </span>    e8/call  <a href='000init.subx.html#L18'>syscall_exit</a>/disp32
<span id="L152" class="LineNr">152 </span>
<span id="L153" class="LineNr">153 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->