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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
<!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/bootstrap/039debug.cc</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<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-light">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #ffffd7; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #ffffd7; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.LineNr { }
.Constant { color: #008787; }
.Comment { color: #005faf; }
.Delimiter { color: #c000c0; }
.Identifier { color: #af5f00; }
.Normal { color: #000000; background-color: #ffffd7; padding-bottom: 1px; }
.Todo { color: #000000; background-color: #ffff00; 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/bootstrap/039debug.cc'>https://github.com/akkartik/mu/blob/main/linux/bootstrap/039debug.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//:: Some helpers for debugging.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: Load the 'map' file generated during 'bootstrap --debug translate' when running</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: 'bootstrap --trace run'.</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment">//: (It'll only affect the trace.)</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L8" class="LineNr"> 8 </span>map<<span class="Comment">/*</span><span class="Comment">address</span><span class="Comment">*/</span><span class="Normal">uint32_t</span><span class="Delimiter">,</span> string> <a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">;</span> <span class="Comment">// used only by 'bootstrap run'</span>
<span id="L9" class="LineNr"> 9 </span>map<<span class="Comment">/*</span><span class="Comment">address</span><span class="Comment">*/</span><span class="Normal">uint32_t</span><span class="Delimiter">,</span> string> <a href='039debug.cc.html#L9'>Source_line</a><span class="Delimiter">;</span> <span class="Comment">// used only by 'bootstrap run'</span>
<span id="L10" class="LineNr"> 10 </span><span class="Delimiter">:(before "End --trace Settings")</span>
<span id="L11" class="LineNr"> 11 </span><a href='039debug.cc.html#L14'>load_labels</a><span class="Delimiter">();</span>
<span id="L12" class="LineNr"> 12 </span><a href='039debug.cc.html#L27'>load_source_lines</a><span class="Delimiter">();</span>
<span id="L13" class="LineNr"> 13 </span><span class="Delimiter">:(code)</span>
<span id="L14" class="LineNr"> 14 </span><span class="Normal">void</span> <a href='039debug.cc.html#L14'>load_labels</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L15" class="LineNr"> 15 </span> ifstream fin<span class="Delimiter">(</span><span class="Constant">"labels"</span><span class="Delimiter">);</span>
<span id="L16" class="LineNr"> 16 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>fin<span class="Delimiter">.</span>fail<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L17" class="LineNr"> 17 </span> fin >> std::hex<span class="Delimiter">;</span>
<span id="L18" class="LineNr"> 18 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L249'>has_data</a><span class="Delimiter">(</span>fin<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L19" class="LineNr"> 19 </span> <span class="Normal">uint32_t</span> addr = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L20" class="LineNr"> 20 </span> fin >> addr<span class="Delimiter">;</span>
<span id="L21" class="LineNr"> 21 </span> string <a href='011run.cc.html#L111'>name</a><span class="Delimiter">;</span>
<span id="L22" class="LineNr"> 22 </span> fin >> <a href='011run.cc.html#L111'>name</a><span class="Delimiter">;</span>
<span id="L23" class="LineNr"> 23 </span> <a href='001help.cc.html#L227'>put</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> addr<span class="Delimiter">,</span> <a href='011run.cc.html#L111'>name</a><span class="Delimiter">);</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Delimiter">}</span>
<span id="L25" class="LineNr"> 25 </span><span class="Delimiter">}</span>
<span id="L26" class="LineNr"> 26 </span>
<span id="L27" class="LineNr"> 27 </span><span class="Normal">void</span> <a href='039debug.cc.html#L27'>load_source_lines</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L28" class="LineNr"> 28 </span> ifstream fin<span class="Delimiter">(</span><span class="Constant">"source_lines"</span><span class="Delimiter">);</span>
<span id="L29" class="LineNr"> 29 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>fin<span class="Delimiter">.</span>fail<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L30" class="LineNr"> 30 </span> fin >> std::hex<span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L249'>has_data</a><span class="Delimiter">(</span>fin<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L32" class="LineNr"> 32 </span> <span class="Normal">uint32_t</span> addr = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L33" class="LineNr"> 33 </span> fin >> addr<span class="Delimiter">;</span>
<span id="L34" class="LineNr"> 34 </span> string <a href='011run.cc.html#L121'>line</a><span class="Delimiter">;</span>
<span id="L35" class="LineNr"> 35 </span> getline<span class="Delimiter">(</span>fin<span class="Delimiter">,</span> <a href='011run.cc.html#L121'>line</a><span class="Delimiter">);</span>
<span id="L36" class="LineNr"> 36 </span> <a href='001help.cc.html#L227'>put</a><span class="Delimiter">(</span><a href='039debug.cc.html#L9'>Source_line</a><span class="Delimiter">,</span> addr<span class="Delimiter">,</span> <a href='039debug.cc.html#L139'>hacky_squeeze_out_whitespace</a><span class="Delimiter">(</span><a href='011run.cc.html#L121'>line</a><span class="Delimiter">));</span>
<span id="L37" class="LineNr"> 37 </span> <span class="Delimiter">}</span>
<span id="L38" class="LineNr"> 38 </span><span class="Delimiter">}</span>
<span id="L39" class="LineNr"> 39 </span>
<span id="L40" class="LineNr"> 40 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L41" class="LineNr"> 41 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">))</span>
<span id="L42" class="LineNr"> 42 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span>Callstack_depth<span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"== label "</span> << get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L43" class="LineNr"> 43 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L9'>Source_line</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">))</span>
<span id="L44" class="LineNr"> 44 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span>Callstack_depth<span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"inst: "</span> << get<span class="Delimiter">(</span><a href='039debug.cc.html#L9'>Source_line</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L45" class="LineNr"> 45 </span><span class="Normal">else</span>
<span id="L46" class="LineNr"> 46 </span> <span class="Comment">// no source line info; do what you can</span>
<span id="L47" class="LineNr"> 47 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span>Callstack_depth<span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"inst: "</span> << <a href='039debug.cc.html#L50'>debug_info</a><span class="Delimiter">(</span><a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L48" class="LineNr"> 48 </span>
<span id="L49" class="LineNr"> 49 </span><span class="Delimiter">:(code)</span>
<span id="L50" class="LineNr"> 50 </span>string <a href='039debug.cc.html#L50'>debug_info</a><span class="Delimiter">(</span><span class="Normal">uint32_t</span> inst_address<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L51" class="LineNr"> 51 </span> <span class="Normal">uint8_t</span> op = <a href='010vm.cc.html#L174'>read_mem_u8</a><span class="Delimiter">(</span>inst_address<span class="Delimiter">);</span>
<span id="L52" class="LineNr"> 52 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>op != <span class="Constant">0xe8</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L53" class="LineNr"> 53 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L54" class="LineNr"> 54 </span> out << <a href='010vm.cc.html#L407'>HEXBYTE</a> << <a href='010vm.cc.html#L410'>NUM</a><span class="Delimiter">(</span>op<span class="Delimiter">);</span>
<span id="L55" class="LineNr"> 55 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Delimiter">}</span>
<span id="L57" class="LineNr"> 57 </span> <span class="Normal">int32_t</span> offset = <a href='010vm.cc.html#L185'>read_mem_i32</a><span class="Delimiter">(</span>inst_address+<span class="Comment">/*</span><span class="Comment">skip op</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L58" class="LineNr"> 58 </span> <span class="Normal">uint32_t</span> next_eip = inst_address+<span class="Comment">/*</span><span class="Comment">inst length</span><span class="Comment">*/</span><span class="Constant">5</span>+offset<span class="Delimiter">;</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> next_eip<span class="Delimiter">))</span>
<span id="L60" class="LineNr"> 60 </span> <span class="Identifier">return</span> <span class="Constant">"e8/call "</span>+get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> next_eip<span class="Delimiter">);</span>
<span id="L61" class="LineNr"> 61 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L62" class="LineNr"> 62 </span> out << <span class="Constant">"e8/call 0x"</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << next_eip<span class="Delimiter">;</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L64" class="LineNr"> 64 </span><span class="Delimiter">}</span>
<span id="L65" class="LineNr"> 65 </span>
<span id="L66" class="LineNr"> 66 </span><span class="Comment">//: If a label starts with '$watch-', make a note of the effective address</span>
<span id="L67" class="LineNr"> 67 </span><span class="Comment">//: computed by the next instruction. Start dumping out its contents to the</span>
<span id="L68" class="LineNr"> 68 </span><span class="Comment">//: trace after every subsequent instruction.</span>
<span id="L69" class="LineNr"> 69 </span>
<span id="L70" class="LineNr"> 70 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L71" class="LineNr"> 71 </span><a href='039debug.cc.html#L77'>dump_watch_points</a><span class="Delimiter">();</span>
<span id="L72" class="LineNr"> 72 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L73" class="LineNr"> 73 </span>map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>> <a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">;</span>
<span id="L74" class="LineNr"> 74 </span><span class="Delimiter">:(before "End Reset")</span>
<span id="L75" class="LineNr"> 75 </span><a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span id="L76" class="LineNr"> 76 </span><span class="Delimiter">:(code)</span>
<span id="L77" class="LineNr"> 77 </span><span class="Normal">void</span> <a href='039debug.cc.html#L77'>dump_watch_points</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L78" class="LineNr"> 78 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L79" class="LineNr"> 79 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span>Callstack_depth<span class="Delimiter">,</span> <span class="Constant">"dbg"</span><span class="Delimiter">)</span> << <span class="Constant">"watch points:"</span> << end<span class="Delimiter">();</span>
<span id="L80" class="LineNr"> 80 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> <span class="Normal">uint32_t</span>>::iterator p = <a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != <a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span id="L81" class="LineNr"> 81 </span> <a href='003trace.cc.html#L96'>trace</a><span class="Delimiter">(</span>Callstack_depth<span class="Delimiter">,</span> <span class="Constant">"dbg"</span><span class="Delimiter">)</span> << <span class="Constant">" "</span> << p<span class="Delimiter">-></span>first << <span class="Constant">": "</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << p<span class="Delimiter">-></span>second << <span class="Constant">" -> "</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << <a href='010vm.cc.html#L181'>read_mem_u32</a><span class="Delimiter">(</span>p<span class="Delimiter">-></span>second<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span id="L82" class="LineNr"> 82 </span><span class="Delimiter">}</span>
<span id="L83" class="LineNr"> 83 </span>
<span id="L84" class="LineNr"> 84 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L85" class="LineNr"> 85 </span>string Watch_this_effective_address<span class="Delimiter">;</span>
<span id="L86" class="LineNr"> 86 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L87" class="LineNr"> 87 </span>Watch_this_effective_address = <span class="Constant">""</span><span class="Delimiter">;</span>
<span id="L88" class="LineNr"> 88 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> && <a href='001help.cc.html#L104'>starts_with</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">),</span> <span class="Constant">"$watch-"</span><span class="Delimiter">))</span>
<span id="L89" class="LineNr"> 89 </span> Watch_this_effective_address = get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">);</span>
<span id="L90" class="LineNr"> 90 </span><span class="Delimiter">:(after "Found <a href='013direct_addressing.cc.html#L101'>effective_address</a>(addr)")</span>
<span id="L91" class="LineNr"> 91 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!Watch_this_effective_address<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <a href='003trace.cc.html#L439'>dbg</a> << <span class="Constant">"now watching "</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << addr << <span class="Constant">" for "</span> << Watch_this_effective_address << end<span class="Delimiter">();</span>
<span id="L93" class="LineNr"> 93 </span> <a href='001help.cc.html#L227'>put</a><span class="Delimiter">(</span><a href='039debug.cc.html#L73'>Watch_points</a><span class="Delimiter">,</span> Watch_this_effective_address<span class="Delimiter">,</span> addr<span class="Delimiter">);</span>
<span id="L94" class="LineNr"> 94 </span><span class="Delimiter">}</span>
<span id="L95" class="LineNr"> 95 </span>
<span id="L96" class="LineNr"> 96 </span><span class="Comment">//: If a label starts with '$dump-stack', dump out to the trace n bytes on</span>
<span id="L97" class="LineNr"> 97 </span><span class="Comment">//: either side of ESP.</span>
<span id="L98" class="LineNr"> 98 </span>
<span id="L99" class="LineNr"> 99 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L100" class="LineNr">100 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> && <a href='001help.cc.html#L104'>starts_with</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">),</span> <span class="Constant">"$dump-stack"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L101" class="LineNr">101 </span> dump_stack<span class="Delimiter">(</span><span class="Constant">64</span><span class="Delimiter">);</span>
<span id="L102" class="LineNr">102 </span><span class="Delimiter">}</span>
<span id="L103" class="LineNr">103 </span><span class="Delimiter">:(code)</span>
<span id="L104" class="LineNr">104 </span><span class="Normal">void</span> dump_stack<span class="Delimiter">(</span><span class="Normal">int</span> n<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L105" class="LineNr">105 </span> <span class="Normal">uint32_t</span> stack_pointer = Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">;</span>
<span id="L106" class="LineNr">106 </span> <span class="Normal">uint32_t</span> start = <span class="Delimiter">((</span>stack_pointer-n<span class="Delimiter">)</span>&<span class="Constant">0xfffffff0</span><span class="Delimiter">);</span>
<span id="L107" class="LineNr">107 </span> <a href='003trace.cc.html#L439'>dbg</a> << <span class="Constant">"stack:"</span> << end<span class="Delimiter">();</span>
<span id="L108" class="LineNr">108 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">uint32_t</span> addr = start<span class="Delimiter">;</span> addr < start+n*<span class="Constant">2</span><span class="Delimiter">;</span> addr+=<span class="Constant">16</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L109" class="LineNr">109 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>addr >= <a href='012elf.cc.html#L153'>AFTER_STACK</a><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L110" class="LineNr">110 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L111" class="LineNr">111 </span> out << <a href='010vm.cc.html#L408'>HEXWORD</a> << addr << <span class="Constant">":"</span><span class="Delimiter">;</span>
<span id="L112" class="LineNr">112 </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 < <span class="Constant">16</span><span class="Delimiter">;</span> i+=<span class="Constant">4</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L113" class="LineNr">113 </span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L114" class="LineNr">114 </span> out << <span class="Delimiter">((</span>addr+i == stack_pointer<span class="Delimiter">)</span> ? <span class="Constant">'['</span> : <span class="Constant">' '</span><span class="Delimiter">);</span>
<span id="L115" class="LineNr">115 </span> out << <a href='010vm.cc.html#L408'>HEXWORD</a> << <a href='010vm.cc.html#L181'>read_mem_u32</a><span class="Delimiter">(</span>addr+i<span class="Delimiter">);</span>
<span id="L116" class="LineNr">116 </span> out << <span class="Delimiter">((</span>addr+i == stack_pointer<span class="Delimiter">)</span> ? <span class="Constant">']'</span> : <span class="Constant">' '</span><span class="Delimiter">);</span>
<span id="L117" class="LineNr">117 </span> <span class="Delimiter">}</span>
<span id="L118" class="LineNr">118 </span> <a href='003trace.cc.html#L439'>dbg</a> << out<span class="Delimiter">.</span>str<span class="Delimiter">()</span> << end<span class="Delimiter">();</span>
<span id="L119" class="LineNr">119 </span> <span class="Delimiter">}</span>
<span id="L120" class="LineNr">120 </span><span class="Delimiter">}</span>
<span id="L121" class="LineNr">121 </span>
<span id="L122" class="LineNr">122 </span><span class="Comment">//: Special label that dumps regions of memory.</span>
<span id="L123" class="LineNr">123 </span><span class="Comment">//: Not a general mechanism; by the time you get here you're willing to hack</span>
<span id="L124" class="LineNr">124 </span><span class="Comment">//: on the emulator.</span>
<span id="L125" class="LineNr">125 </span><span class="Delimiter">:(after "Run One Instruction")</span>
<span id="L126" class="LineNr">126 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L231'>contains_key</a><span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> && get<span class="Delimiter">(</span><a href='039debug.cc.html#L8'>Symbol_name</a><span class="Delimiter">,</span> <a href='010vm.cc.html#L26'>EIP</a><span class="Delimiter">)</span> == <span class="Constant">"$dump-stream-at-EAX"</span><span class="Delimiter">)</span>
<span id="L127" class="LineNr">127 </span> <a href='039debug.cc.html#L129'>dump_stream_at</a><span class="Delimiter">(</span>Reg[EAX]<span class="Delimiter">.</span>u<span class="Delimiter">);</span>
<span id="L128" class="LineNr">128 </span><span class="Delimiter">:(code)</span>
<span id="L129" class="LineNr">129 </span><span class="Normal">void</span> <a href='039debug.cc.html#L129'>dump_stream_at</a><span class="Delimiter">(</span><span class="Normal">uint32_t</span> stream_start<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L130" class="LineNr">130 </span> <span class="Normal">int32_t</span> stream_length = <a href='010vm.cc.html#L185'>read_mem_i32</a><span class="Delimiter">(</span>stream_start + <span class="Constant">8</span><span class="Delimiter">);</span>
<span id="L131" class="LineNr">131 </span> <a href='003trace.cc.html#L439'>dbg</a> << <span class="Constant">"stream length: "</span> << std::dec << stream_length << end<span class="Delimiter">();</span>
<span id="L132" class="LineNr">132 </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 < stream_length + <span class="Constant">12</span><span class="Delimiter">;</span> ++i<span class="Delimiter">)</span>
<span id="L133" class="LineNr">133 </span> <a href='003trace.cc.html#L439'>dbg</a> << <span class="Constant">"0x"</span> << <a href='010vm.cc.html#L408'>HEXWORD</a> << <span class="Delimiter">(</span>stream_start+i<span class="Delimiter">)</span> << <span class="Constant">": "</span> << <a href='010vm.cc.html#L407'>HEXBYTE</a> << <a href='010vm.cc.html#L410'>NUM</a><span class="Delimiter">(</span><a href='010vm.cc.html#L174'>read_mem_u8</a><span class="Delimiter">(</span>stream_start+i<span class="Delimiter">))</span> << end<span class="Delimiter">();</span>
<span id="L134" class="LineNr">134 </span><span class="Delimiter">}</span>
<span id="L135" class="LineNr">135 </span>
<span id="L136" class="LineNr">136 </span><span class="Comment">//: helpers</span>
<span id="L137" class="LineNr">137 </span>
<span id="L138" class="LineNr">138 </span><span class="Delimiter">:(code)</span>
<span id="L139" class="LineNr">139 </span>string <a href='039debug.cc.html#L139'>hacky_squeeze_out_whitespace</a><span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L140" class="LineNr">140 </span> <span class="Comment">// strip whitespace at start</span>
<span id="L141" class="LineNr">141 </span> string::const_iterator first = s<span class="Delimiter">.</span>begin<span class="Delimiter">();</span>
<span id="L142" class="LineNr">142 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>first != s<span class="Delimiter">.</span>end<span class="Delimiter">()</span> && isspace<span class="Delimiter">(</span>*first<span class="Delimiter">))</span>
<span id="L143" class="LineNr">143 </span> ++first<span class="Delimiter">;</span>
<span id="L144" class="LineNr">144 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>first == s<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">""</span><span class="Delimiter">;</span>
<span id="L145" class="LineNr">145 </span>
<span id="L146" class="LineNr">146 </span> <span class="Comment">// strip whitespace at end</span>
<span id="L147" class="LineNr">147 </span> string::const_iterator last = --s<span class="Delimiter">.</span>end<span class="Delimiter">();</span>
<span id="L148" class="LineNr">148 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>last != s<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> && isspace<span class="Delimiter">(</span>*last<span class="Delimiter">))</span>
<span id="L149" class="LineNr">149 </span> --last<span class="Delimiter">;</span>
<span id="L150" class="LineNr">150 </span> ++last<span class="Delimiter">;</span>
<span id="L151" class="LineNr">151 </span>
<span id="L152" class="LineNr">152 </span> <span class="Comment">// replace runs of spaces/dots with single space until comment or string</span>
<span id="L153" class="LineNr">153 </span> <span class="Comment">// </span><span class="Todo">TODO</span><span class="Comment">:</span>
<span id="L154" class="LineNr">154 </span> <span class="Comment">// leave alone dots not surrounded by whitespace</span>
<span id="L155" class="LineNr">155 </span> <span class="Comment">// leave alone '#' within word</span>
<span id="L156" class="LineNr">156 </span> <span class="Comment">// leave alone '"' within word</span>
<span id="L157" class="LineNr">157 </span> <span class="Comment">// squeeze spaces after end of string</span>
<span id="L158" class="LineNr">158 </span> ostringstream out<span class="Delimiter">;</span>
<span id="L159" class="LineNr">159 </span> <span class="Normal">bool</span> previous_was_space = <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L160" class="LineNr">160 </span> <span class="Normal">bool</span> in_comment_or_string = <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L161" class="LineNr">161 </span> <span class="Normal">for</span> <span class="Delimiter">(</span>string::const_iterator curr = first<span class="Delimiter">;</span> curr != last<span class="Delimiter">;</span> ++curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L162" class="LineNr">162 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>in_comment_or_string<span class="Delimiter">)</span>
<span id="L163" class="LineNr">163 </span> out << *curr<span class="Delimiter">;</span>
<span id="L164" class="LineNr">164 </span> <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>*curr<span class="Delimiter">)</span> || *curr == <span class="Constant">'.'</span><span class="Delimiter">)</span>
<span id="L165" class="LineNr">165 </span> previous_was_space = <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L166" class="LineNr">166 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L167" class="LineNr">167 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>previous_was_space<span class="Delimiter">)</span>
<span id="L168" class="LineNr">168 </span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span id="L169" class="LineNr">169 </span> out << *curr<span class="Delimiter">;</span>
<span id="L170" class="LineNr">170 </span> previous_was_space = <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L171" class="LineNr">171 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>*curr == <span class="Constant">'#'</span> || *curr == <span class="Constant">'"'</span><span class="Delimiter">)</span> in_comment_or_string = <span class="Constant">true</span><span class="Delimiter">;</span>
<span id="L172" class="LineNr">172 </span> <span class="Delimiter">}</span>
<span id="L173" class="LineNr">173 </span> <span class="Delimiter">}</span>
<span id="L174" class="LineNr">174 </span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L175" class="LineNr">175 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|