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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
|
<!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/017jump_relative.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; }
.Special { color: #c00000; }
.SalientComment { color: #00ffff; }
.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; }
-->
</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">//: jump to 16-bit offset</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="SalientComment">//:: jump</span>
<span id="L4" class="LineNr"> 4 </span>
<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L6" class="LineNr"> 6 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L196'>name</a><span class="Delimiter">,</span> <span class="Constant">"e9"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away"</span><span class="Delimiter">);</span>
<span id="L7" class="LineNr"> 7 </span>
<span id="L8" class="LineNr"> 8 </span><span class="Delimiter">:(scenario jump_rel16)</span>
<span id="L9" class="LineNr"> 9 </span>== <span class="Constant">0x1</span>
<span id="L10" class="LineNr"> 10 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L11" class="LineNr"> 11 </span> e9 <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L12" class="LineNr"> 12 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L13" class="LineNr"> 13 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L14" class="LineNr"> 14 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L15" class="LineNr"> 15 </span><span class="traceContains">+run: jump 5</span>
<span id="L16" class="LineNr"> 16 </span><span class="traceContains">+run: inst: 0x00000009</span>
<span id="L17" class="LineNr"> 17 </span><span class="traceAbsent">-run: inst: 0x00000003</span>
<span id="L18" class="LineNr"> 18 </span>
<span id="L19" class="LineNr"> 19 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L20" class="LineNr"> 20 </span><span class="Normal">case</span> <span class="Constant">0xe9</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel8</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Normal">int16_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L22" class="LineNr"> 22 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << offset << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L23" class="LineNr"> 23 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L24" class="LineNr"> 24 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L25" class="LineNr"> 25 </span><span class="Delimiter">}</span>
<span id="L26" class="LineNr"> 26 </span><span class="Delimiter">:(code)</span>
<span id="L27" class="LineNr"> 27 </span><span class="Normal">int16_t</span> <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L28" class="LineNr"> 28 </span> <span class="Normal">int16_t</span> result = <a href='010vm.cc.html#L190'>next</a><span class="Delimiter">();</span>
<span id="L29" class="LineNr"> 29 </span> result |= <span class="Delimiter">(</span><a href='010vm.cc.html#L190'>next</a><span class="Delimiter">()</span><<<span class="Constant">8</span><span class="Delimiter">);</span>
<span id="L30" class="LineNr"> 30 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span><span class="Delimiter">}</span>
<span id="L32" class="LineNr"> 32 </span>
<span id="L33" class="LineNr"> 33 </span><span class="SalientComment">//:: jump if equal/zero</span>
<span id="L34" class="LineNr"> 34 </span>
<span id="L35" class="LineNr"> 35 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L36" class="LineNr"> 36 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"84"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if ZF is set"</span><span class="Delimiter">);</span>
<span id="L37" class="LineNr"> 37 </span>
<span id="L38" class="LineNr"> 38 </span><span class="Delimiter">:(scenario je_rel16_success)</span>
<span id="L39" class="LineNr"> 39 </span><span class="Special">% ZF = true;</span>
<span id="L40" class="LineNr"> 40 </span>== <span class="Constant">0x1</span>
<span id="L41" class="LineNr"> 41 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Constant">0f</span> <span class="Constant">84</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L43" class="LineNr"> 43 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L44" class="LineNr"> 44 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L45" class="LineNr"> 45 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L46" class="LineNr"> 46 </span><span class="traceContains">+run: jump 5</span>
<span id="L47" class="LineNr"> 47 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L48" class="LineNr"> 48 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L49" class="LineNr"> 49 </span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L51" class="LineNr"> 51 </span><span class="Normal">case</span> <span class="Constant">0x84</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 if ZF</span>
<span id="L52" class="LineNr"> 52 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L53" class="LineNr"> 53 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>ZF<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L54" class="LineNr"> 54 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L55" class="LineNr"> 55 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Delimiter">}</span>
<span id="L57" class="LineNr"> 57 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L58" class="LineNr"> 58 </span><span class="Delimiter">}</span>
<span id="L59" class="LineNr"> 59 </span>
<span id="L60" class="LineNr"> 60 </span><span class="Delimiter">:(scenario je_rel16_fail)</span>
<span id="L61" class="LineNr"> 61 </span><span class="Special">% ZF = false;</span>
<span id="L62" class="LineNr"> 62 </span>== <span class="Constant">0x1</span>
<span id="L63" class="LineNr"> 63 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L64" class="LineNr"> 64 </span> <span class="Constant">0f</span> <span class="Constant">84</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L65" class="LineNr"> 65 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L66" class="LineNr"> 66 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L67" class="LineNr"> 67 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L68" class="LineNr"> 68 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L69" class="LineNr"> 69 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L70" class="LineNr"> 70 </span><span class="traceAbsent">-run: jump 5</span>
<span id="L71" class="LineNr"> 71 </span>
<span id="L72" class="LineNr"> 72 </span><span class="SalientComment">//:: jump if not equal/not zero</span>
<span id="L73" class="LineNr"> 73 </span>
<span id="L74" class="LineNr"> 74 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L75" class="LineNr"> 75 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"85"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if ZF is not set"</span><span class="Delimiter">);</span>
<span id="L76" class="LineNr"> 76 </span>
<span id="L77" class="LineNr"> 77 </span><span class="Delimiter">:(scenario jne_rel16_success)</span>
<span id="L78" class="LineNr"> 78 </span><span class="Special">% ZF = false;</span>
<span id="L79" class="LineNr"> 79 </span>== <span class="Constant">0x1</span>
<span id="L80" class="LineNr"> 80 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Constant">0f</span> <span class="Constant">85</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L82" class="LineNr"> 82 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L83" class="LineNr"> 83 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L84" class="LineNr"> 84 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L85" class="LineNr"> 85 </span><span class="traceContains">+run: jump 5</span>
<span id="L86" class="LineNr"> 86 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L87" class="LineNr"> 87 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L88" class="LineNr"> 88 </span>
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L90" class="LineNr"> 90 </span><span class="Normal">case</span> <span class="Constant">0x85</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 unless ZF</span>
<span id="L91" class="LineNr"> 91 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!ZF<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L93" class="LineNr"> 93 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L94" class="LineNr"> 94 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Delimiter">}</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L97" class="LineNr"> 97 </span><span class="Delimiter">}</span>
<span id="L98" class="LineNr"> 98 </span>
<span id="L99" class="LineNr"> 99 </span><span class="Delimiter">:(scenario jne_rel16_fail)</span>
<span id="L100" class="LineNr">100 </span><span class="Special">% ZF = true;</span>
<span id="L101" class="LineNr">101 </span>== <span class="Constant">0x1</span>
<span id="L102" class="LineNr">102 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L103" class="LineNr">103 </span> <span class="Constant">0f</span> <span class="Constant">85</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L104" class="LineNr">104 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L105" class="LineNr">105 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L106" class="LineNr">106 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L107" class="LineNr">107 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L108" class="LineNr">108 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L109" class="LineNr">109 </span><span class="traceAbsent">-run: jump 5</span>
<span id="L110" class="LineNr">110 </span>
<span id="L111" class="LineNr">111 </span><span class="SalientComment">//:: jump if greater</span>
<span id="L112" class="LineNr">112 </span>
<span id="L113" class="LineNr">113 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L114" class="LineNr">114 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"8f"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if greater (ZF is unset, SF == OF)"</span><span class="Delimiter">);</span>
<span id="L115" class="LineNr">115 </span>
<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(scenario jg_rel16_success)</span>
<span id="L117" class="LineNr">117 </span><span class="Special">% ZF = false;</span>
<span id="L118" class="LineNr">118 </span><span class="Special">% SF = false;</span>
<span id="L119" class="LineNr">119 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L120" class="LineNr">120 </span>== <span class="Constant">0x1</span>
<span id="L121" class="LineNr">121 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L122" class="LineNr">122 </span> <span class="Constant">0f</span> <span class="Constant">8f</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L123" class="LineNr">123 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L124" class="LineNr">124 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L125" class="LineNr">125 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L126" class="LineNr">126 </span><span class="traceContains">+run: jump 5</span>
<span id="L127" class="LineNr">127 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L128" class="LineNr">128 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L129" class="LineNr">129 </span>
<span id="L130" class="LineNr">130 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L131" class="LineNr">131 </span><span class="Normal">case</span> <span class="Constant">0x8f</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 if !SF and !ZF</span>
<span id="L132" class="LineNr">132 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L133" class="LineNr">133 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!ZF && SF == <a href='010vm.cc.html#L59'>OF</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L134" class="LineNr">134 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L135" class="LineNr">135 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L136" class="LineNr">136 </span> <span class="Delimiter">}</span>
<span id="L137" class="LineNr">137 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L138" class="LineNr">138 </span><span class="Delimiter">}</span>
<span id="L139" class="LineNr">139 </span>
<span id="L140" class="LineNr">140 </span><span class="Delimiter">:(scenario jg_rel16_fail)</span>
<span id="L141" class="LineNr">141 </span><span class="Special">% ZF = false;</span>
<span id="L142" class="LineNr">142 </span><span class="Special">% SF = true;</span>
<span id="L143" class="LineNr">143 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L144" class="LineNr">144 </span>== <span class="Constant">0x1</span>
<span id="L145" class="LineNr">145 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L146" class="LineNr">146 </span> <span class="Constant">0f</span> <span class="Constant">8f</span> <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L147" class="LineNr">147 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L148" class="LineNr">148 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L149" class="LineNr">149 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L150" class="LineNr">150 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L151" class="LineNr">151 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L152" class="LineNr">152 </span><span class="traceAbsent">-run: jump 5</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span><span class="SalientComment">//:: jump if greater or equal</span>
<span id="L155" class="LineNr">155 </span>
<span id="L156" class="LineNr">156 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L157" class="LineNr">157 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"8d"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if greater or equal (SF == OF)"</span><span class="Delimiter">);</span>
<span id="L158" class="LineNr">158 </span>
<span id="L159" class="LineNr">159 </span><span class="Delimiter">:(scenario jge_rel16_success)</span>
<span id="L160" class="LineNr">160 </span><span class="Special">% SF = false;</span>
<span id="L161" class="LineNr">161 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L162" class="LineNr">162 </span>== <span class="Constant">0x1</span>
<span id="L163" class="LineNr">163 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L164" class="LineNr">164 </span> <span class="Constant">0f</span> 8d <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L165" class="LineNr">165 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L166" class="LineNr">166 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L167" class="LineNr">167 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L168" class="LineNr">168 </span><span class="traceContains">+run: jump 5</span>
<span id="L169" class="LineNr">169 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L170" class="LineNr">170 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L171" class="LineNr">171 </span>
<span id="L172" class="LineNr">172 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L173" class="LineNr">173 </span><span class="Normal">case</span> <span class="Constant">0x8d</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 if !SF</span>
<span id="L174" class="LineNr">174 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L175" class="LineNr">175 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>SF == <a href='010vm.cc.html#L59'>OF</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L176" class="LineNr">176 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L177" class="LineNr">177 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L178" class="LineNr">178 </span> <span class="Delimiter">}</span>
<span id="L179" class="LineNr">179 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L180" class="LineNr">180 </span><span class="Delimiter">}</span>
<span id="L181" class="LineNr">181 </span>
<span id="L182" class="LineNr">182 </span><span class="Delimiter">:(scenario jge_rel16_fail)</span>
<span id="L183" class="LineNr">183 </span><span class="Special">% SF = true;</span>
<span id="L184" class="LineNr">184 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L185" class="LineNr">185 </span>== <span class="Constant">0x1</span>
<span id="L186" class="LineNr">186 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L187" class="LineNr">187 </span> <span class="Constant">0f</span> 8d <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L188" class="LineNr">188 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L189" class="LineNr">189 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L190" class="LineNr">190 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L191" class="LineNr">191 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L192" class="LineNr">192 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L193" class="LineNr">193 </span><span class="traceAbsent">-run: jump 5</span>
<span id="L194" class="LineNr">194 </span>
<span id="L195" class="LineNr">195 </span><span class="SalientComment">//:: jump if lesser</span>
<span id="L196" class="LineNr">196 </span>
<span id="L197" class="LineNr">197 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L198" class="LineNr">198 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"8c"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if lesser (SF != OF)"</span><span class="Delimiter">);</span>
<span id="L199" class="LineNr">199 </span>
<span id="L200" class="LineNr">200 </span><span class="Delimiter">:(scenario jl_rel16_success)</span>
<span id="L201" class="LineNr">201 </span><span class="Special">% ZF = false;</span>
<span id="L202" class="LineNr">202 </span><span class="Special">% SF = true;</span>
<span id="L203" class="LineNr">203 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L204" class="LineNr">204 </span>== <span class="Constant">0x1</span>
<span id="L205" class="LineNr">205 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L206" class="LineNr">206 </span> <span class="Constant">0f</span> 8c <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L207" class="LineNr">207 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L208" class="LineNr">208 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L209" class="LineNr">209 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L210" class="LineNr">210 </span><span class="traceContains">+run: jump 5</span>
<span id="L211" class="LineNr">211 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L212" class="LineNr">212 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L213" class="LineNr">213 </span>
<span id="L214" class="LineNr">214 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L215" class="LineNr">215 </span><span class="Normal">case</span> <span class="Constant">0x8c</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 if SF and !ZF</span>
<span id="L216" class="LineNr">216 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L217" class="LineNr">217 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>SF != <a href='010vm.cc.html#L59'>OF</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L218" class="LineNr">218 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L219" class="LineNr">219 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L220" class="LineNr">220 </span> <span class="Delimiter">}</span>
<span id="L221" class="LineNr">221 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L222" class="LineNr">222 </span><span class="Delimiter">}</span>
<span id="L223" class="LineNr">223 </span>
<span id="L224" class="LineNr">224 </span><span class="Delimiter">:(scenario jl_rel16_fail)</span>
<span id="L225" class="LineNr">225 </span><span class="Special">% ZF = false;</span>
<span id="L226" class="LineNr">226 </span><span class="Special">% SF = false;</span>
<span id="L227" class="LineNr">227 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L228" class="LineNr">228 </span>== <span class="Constant">0x1</span>
<span id="L229" class="LineNr">229 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L230" class="LineNr">230 </span> <span class="Constant">0f</span> 8c <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L231" class="LineNr">231 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L232" class="LineNr">232 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L233" class="LineNr">233 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L234" class="LineNr">234 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L235" class="LineNr">235 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L236" class="LineNr">236 </span><span class="traceAbsent">-run: jump 5</span>
<span id="L237" class="LineNr">237 </span>
<span id="L238" class="LineNr">238 </span><span class="SalientComment">//:: jump if lesser or equal</span>
<span id="L239" class="LineNr">239 </span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">:(before "End Initialize Op Names(name)")</span>
<span id="L241" class="LineNr">241 </span><a href='001help.cc.html#L243'>put</a><span class="Delimiter">(</span><a href='010vm.cc.html#L197'>name_0f</a><span class="Delimiter">,</span> <span class="Constant">"8e"</span><span class="Delimiter">,</span> <span class="Constant">"jump disp16 bytes away if lesser or equal (ZF is set or SF != OF)"</span><span class="Delimiter">);</span>
<span id="L242" class="LineNr">242 </span>
<span id="L243" class="LineNr">243 </span><span class="Delimiter">:(scenario jle_rel16_equal)</span>
<span id="L244" class="LineNr">244 </span><span class="Special">% ZF = true;</span>
<span id="L245" class="LineNr">245 </span><span class="Special">% SF = false;</span>
<span id="L246" class="LineNr">246 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L247" class="LineNr">247 </span>== <span class="Constant">0x1</span>
<span id="L248" class="LineNr">248 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L249" class="LineNr">249 </span> <span class="Constant">0f</span> 8e <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L250" class="LineNr">250 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L251" class="LineNr">251 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L252" class="LineNr">252 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L253" class="LineNr">253 </span><span class="traceContains">+run: jump 5</span>
<span id="L254" class="LineNr">254 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L255" class="LineNr">255 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L256" class="LineNr">256 </span>
<span id="L257" class="LineNr">257 </span><span class="Delimiter">:(scenario jle_rel16_lesser)</span>
<span id="L258" class="LineNr">258 </span><span class="Special">% ZF = false;</span>
<span id="L259" class="LineNr">259 </span><span class="Special">% SF = true;</span>
<span id="L260" class="LineNr">260 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L261" class="LineNr">261 </span>== <span class="Constant">0x1</span>
<span id="L262" class="LineNr">262 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L263" class="LineNr">263 </span> <span class="Constant">0f</span> 8e <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L264" class="LineNr">264 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L265" class="LineNr">265 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L266" class="LineNr">266 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L267" class="LineNr">267 </span><span class="traceContains">+run: jump 5</span>
<span id="L268" class="LineNr">268 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L269" class="LineNr">269 </span><span class="traceAbsent">-run: inst: 0x00000005</span>
<span id="L270" class="LineNr">270 </span>
<span id="L271" class="LineNr">271 </span><span class="Delimiter">:(before "End Two-Byte Opcodes Starting With 0f")</span>
<span id="L272" class="LineNr">272 </span><span class="Normal">case</span> <span class="Constant">0x8e</span>: <span class="Delimiter">{</span> <span class="Comment">// jump rel16 if SF or ZF</span>
<span id="L273" class="LineNr">273 </span> <span class="Normal">int8_t</span> offset = <a href='017jump_relative.cc.html#L27'>imm16</a><span class="Delimiter">();</span>
<span id="L274" class="LineNr">274 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>ZF || SF != <a href='010vm.cc.html#L59'>OF</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L275" class="LineNr">275 </span> <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">90</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump "</span> << <a href='010vm.cc.html#L230'>NUM</a><span class="Delimiter">(</span>offset<span class="Delimiter">)</span> << <a href='003trace.cc.html#L213'>end</a><span class="Delimiter">();</span>
<span id="L276" class="LineNr">276 </span> <a href='010vm.cc.html#L29'>EIP</a> += offset<span class="Delimiter">;</span>
<span id="L277" class="LineNr">277 </span> <span class="Delimiter">}</span>
<span id="L278" class="LineNr">278 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L279" class="LineNr">279 </span><span class="Delimiter">}</span>
<span id="L280" class="LineNr">280 </span>
<span id="L281" class="LineNr">281 </span><span class="Delimiter">:(scenario jle_rel16_greater)</span>
<span id="L282" class="LineNr">282 </span><span class="Special">% ZF = false;</span>
<span id="L283" class="LineNr">283 </span><span class="Special">% SF = false;</span>
<span id="L284" class="LineNr">284 </span><span class="Special">% <a href='010vm.cc.html#L59'>OF</a> = false;</span>
<span id="L285" class="LineNr">285 </span>== <span class="Constant">0x1</span>
<span id="L286" class="LineNr">286 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L287" class="LineNr">287 </span> <span class="Constant">0f</span> 8e <span class="PreProc">0</span><span class="Constant">5</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># skip 1 instruction</span>
<span id="L288" class="LineNr">288 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">1</span>
<span id="L289" class="LineNr">289 </span> <span class="PreProc">0</span><span class="Constant">5</span> <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="PreProc">0</span><span class="Constant">2</span>
<span id="L290" class="LineNr">290 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L291" class="LineNr">291 </span><span class="traceContains">+run: inst: 0x00000005</span>
<span id="L292" class="LineNr">292 </span><span class="traceContains">+run: inst: 0x0000000a</span>
<span id="L293" class="LineNr">293 </span><span class="traceAbsent">-run: jump 5</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|