about summary refs log blame commit diff stats
path: root/html/apps/ex3.subx.html
blob: 645e97afa39cc695887cc874284b985bde682c0d (plain) (tree) 
bb2b6ba7 ^




c9bda4d1 ^

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-24 16:43:34 +0000
tik Agaram <vc@akkartik.com> 2019-08-26 11:55:26 -0700 committer Kartik Agaram <vc@akkartik.com> 2019-08-26 11:59:21 -0700 5592 - switch register names to lowercase' href='/akkartik/mu/commit/html/examples/ex3.subx.html?h=hlt&id=333525360b22f3d3ea31db46a4d2f1b4edbfebdb'>33352536 ^ 
695f9bf8 ^



33352536 ^

6070c23e ^

695f9bf8 ^

33352536 ^

695f9bf8 ^

33352536 ^

695f9bf8 ^

86351aaf ^

695f9bf8 ^


a0d3cac4 ^




bb2b6ba7 ^




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




                                                                                          
                                 

                                                
                                   
                                                                                                      
                                                 

                       

                                                                                           
                    
                                     
                                
                                  
           
                                  
                                

                                                                           















                                                                                 
                                                  















                                                                              
                                                                                                                               
                         
                                                                                                                                           
                                                                         
                                                                                 

                                                                                                                                        


                                                                                          
                                       
                                               


                                                                                                                                                                                                                            
                                        
                                                                               



                                                                                               


                                                                                                         
                                                                                                                                                                                                                                                                                                                                                                                        
                                                                        
                                                                                                
                                                                                                                                                                                                                                                                                                                                                                                           
                                                                                        
                                                            
                                                                                   
                                                                

                                                                            



                                                                                                             



                                     
<!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/ex3.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-light">
<style type="text/css">
<!--
pre { 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; }
.subxComment { color: #005faf; }
.subxS2Comment { color: #8a8a8a; }
.LineNr { }
.subxS1Comment { color: #0000af; }
.SpecialChar { color: #d70000; }
.Constant { color: #008787; }
.Normal { color: #000000; background-color: #c6c6c6; 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/master/apps/ex3.subx'>https://github.com/akkartik/mu/blob/master/apps/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 translate init.linux apps/ex3.subx -o apps/ex3</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment">#   $ ./bootstrap run apps/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  syscall_exit/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>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-24 16:43:37 +0000