blob: a6a414afe38cf33988ea3008f7832f44ac3a23fe (
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
|
<!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 - subx/034discourage_raw_hex.cc</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
a { color:#eeeeee; text-decoration: none; }
a:hover { text-decoration: underline; }
* { font-size: 12pt; font-size: 1em; }
.Constant { color: #00a0a0; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
.Delimiter { color: #800080; }
.LineNr { color: #444444; }
.Identifier { color: #c0a020; }
.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
.PreProc { color: #800080; }
.traceContains { color: #008000; }
.traceAbsent { color: #c00000; }
.cSpecial { color: #008000; }
-->
</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;
}
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();'>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Now that we have operand metadata, start warning on instructions that</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//: don't use it.</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//:</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: While SubX will let you write raw machine code, don't do that unless you</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: have a very good reason.</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before "Pack Operands(segment code)")</span>
<span id="L8" class="LineNr"> 8 </span><a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span>code<span class="Delimiter">);</span>
<span id="L9" class="LineNr"> 9 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='003trace.cc.html#L217'>trace_contains_errors</a><span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L10" class="LineNr">10 </span><span class="Delimiter">:(code)</span>
<span id="L11" class="LineNr">11 </span><span class="Normal">void</span> <a href='034discourage_raw_hex.cc.html#L11'>warn_on_raw_hex</a><span class="Delimiter">(</span><span class="Normal">const</span> segment& code<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L12" class="LineNr">12 </span> <a href='003trace.cc.html#L196'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- <a href='003trace.cc.html#L204'>warn</a> on raw hex instructions"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span>
<span id="L13" class="LineNr">13 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L14" class="LineNr">14 </span> <span class="Normal">const</span> line& inst = code<span class="Delimiter">.</span><a href='011run.cc.html#L106'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L15" class="LineNr">15 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>all_hex_bytes<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> && <a href='031check_operands.cc.html#L272'>has_operands</a><span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L16" class="LineNr">16 </span> <a href='003trace.cc.html#L204'>warn</a> << <span class="Constant">"'"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"': using raw hex is not recommended</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L222'>end</a><span class="Delimiter">();</span>
<span id="L17" class="LineNr">17 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L18" class="LineNr">18 </span> <span class="Delimiter">}</span>
<span id="L19" class="LineNr">19 </span> <span class="Delimiter">}</span>
<span id="L20" class="LineNr">20 </span><span class="Delimiter">}</span>
<span id="L21" class="LineNr">21 </span>
<span id="L22" class="LineNr">22 </span><span class="Delimiter">:(scenarios transform)</span>
<span id="L23" class="LineNr">23 </span><span class="Delimiter">:(scenario warn_on_hex_bytes_without_operands)</span>
<span id="L24" class="LineNr">24 </span>== <span class="Constant">0x1</span>
<span id="L25" class="LineNr">25 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># copy 0x2a (42) to EBX</span>
<span id="L26" class="LineNr">26 </span><span class="traceContains">+warn: 'bb 2a 00 00 00': using raw hex is not recommended</span>
<span id="L27" class="LineNr">27 </span>
<span id="L28" class="LineNr">28 </span><span class="Delimiter">:(scenario warn_on_non_operand_metadata)</span>
<span id="L29" class="LineNr">29 </span>== <span class="Constant">0x1</span>
<span id="L30" class="LineNr">30 </span>bb 2a <span class="PreProc">0</span><span class="Constant">0</span>/foo <span class="PreProc">0</span><span class="Constant">0</span>/bar <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># copy 0x2a (42) to EBX</span>
<span id="L31" class="LineNr">31 </span><span class="traceContains">+warn: 'bb 2a 00/foo 00/bar 00': using raw hex is not recommended</span>
<span id="L32" class="LineNr">32 </span>
<span id="L33" class="LineNr">33 </span><span class="Delimiter">:(scenario no_warn_on_instructions_without_operands)</span>
<span id="L34" class="LineNr">34 </span>== <span class="Constant">0x1</span>
<span id="L35" class="LineNr">35 </span><span class="Constant">55</span> <span class="Comment"># push EBP</span>
<span id="L36" class="LineNr">36 </span><span class="traceAbsent">-warn: '55': using raw hex is not recommended</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|