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
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
|
<!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/012indirect_addressing.cc</title>
<meta name="Generator" content="Vim/8.0">
<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; }
.Error { color: #ffffff; background-color: #ff6060; padding-bottom: 1px; }
.traceContains { color: #008000; }
.LineNr { color: #444444; }
.traceAbsent { color: #c00000; }
.Constant { color: #00a0a0; }
.SalientComment { color: #00ffff; }
.Delimiter { color: #800080; }
.Special { color: #c00000; }
.Identifier { color: #c0a020; }
.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
.PreProc { color: #800080; }
-->
</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">//: operating on memory at the address provided by some register</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_r32)</span>
<span id="L4" class="LineNr"> 4 </span><span class="Special">% Reg[3].i = 0x10;</span>
<span id="L5" class="LineNr"> 5 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L6" class="LineNr"> 6 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L8" class="LineNr"> 8 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">18</span> <span class="Comment"># add EBX to *EAX</span>
<span id="L9" class="LineNr"> 9 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L10" class="LineNr"> 10 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L11" class="LineNr"> 11 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L12" class="LineNr"> 12 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="Delimiter">:(before "End Mod Special-cases(addr)")</span>
<span id="L15" class="LineNr"> 15 </span><span class="Normal">case</span> <span class="Constant">0</span>: <span class="Comment">// indirect addressing</span>
<span id="L16" class="LineNr"> 16 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>rm<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L17" class="LineNr"> 17 </span> <span class="Normal">default</span>: <span class="Comment">// address in register</span>
<span id="L18" class="LineNr"> 18 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is 0x"</span> << std::hex << Reg[rm]<span class="Delimiter">.</span>u << <span class="Constant">" ("</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>rm<span class="Delimiter">)</span> << <span class="Constant">")"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L19" class="LineNr"> 19 </span> addr = Reg[rm]<span class="Delimiter">.</span>u<span class="Delimiter">;</span>
<span id="L20" class="LineNr"> 20 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L21" class="LineNr"> 21 </span> <span class="Comment">// End Mod 0 Special-cases(addr)</span>
<span id="L22" class="LineNr"> 22 </span> <span class="Delimiter">}</span>
<span id="L23" class="LineNr"> 23 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L24" class="LineNr"> 24 </span>
<span id="L25" class="LineNr"> 25 </span><span class="Comment">//:</span>
<span id="L26" class="LineNr"> 26 </span>
<span id="L27" class="LineNr"> 27 </span><span class="Delimiter">:(scenario add_mem_at_r32_to_r32)</span>
<span id="L28" class="LineNr"> 28 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L29" class="LineNr"> 29 </span><span class="Special">% Reg[3].i = 0x10;</span>
<span id="L30" class="LineNr"> 30 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L31" class="LineNr"> 31 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L32" class="LineNr"> 32 </span> <span class="PreProc">0</span><span class="Constant">3</span> <span class="Constant">18</span> <span class="Comment"># add *EAX to EBX</span>
<span id="L33" class="LineNr"> 33 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L34" class="LineNr"> 34 </span><span class="traceContains">+run: add r/m32 to <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L35" class="LineNr"> 35 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L36" class="LineNr"> 36 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L37" class="LineNr"> 37 </span>
<span id="L38" class="LineNr"> 38 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L39" class="LineNr"> 39 </span><span class="Normal">case</span> <span class="Constant">0x03</span>: <span class="Delimiter">{</span> <span class="Comment">// add r/m32 to r32</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L42" class="LineNr"> 42 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"add r/m32 to "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L44" class="LineNr"> 44 </span> <a href='010core.cc.html#L43'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>+<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>i<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span>
<span id="L45" class="LineNr"> 45 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L46" class="LineNr"> 46 </span><span class="Delimiter">}</span>
<span id="L47" class="LineNr"> 47 </span>
<span id="L48" class="LineNr"> 48 </span><span class="SalientComment">//:: subtract</span>
<span id="L49" class="LineNr"> 49 </span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">:(scenario subtract_r32_from_mem_at_r32)</span>
<span id="L51" class="LineNr"> 51 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L52" class="LineNr"> 52 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 10);</span>
<span id="L53" class="LineNr"> 53 </span><span class="Special">% Reg[3].i = 1;</span>
<span id="L54" class="LineNr"> 54 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L55" class="LineNr"> 55 </span> <span class="Constant">29</span> <span class="Constant">18</span> <span class="Comment"># subtract EBX from *EAX</span>
<span id="L56" class="LineNr"> 56 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L57" class="LineNr"> 57 </span><span class="traceContains">+run: subtract <a href='010core.cc.html#L10'>EBX</a> from r/m32</span>
<span id="L58" class="LineNr"> 58 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L59" class="LineNr"> 59 </span><span class="traceContains">+run: storing 0x00000009</span>
<span id="L60" class="LineNr"> 60 </span>
<span id="L61" class="LineNr"> 61 </span><span class="Comment">//:</span>
<span id="L62" class="LineNr"> 62 </span>
<span id="L63" class="LineNr"> 63 </span><span class="Delimiter">:(scenario subtract_mem_at_r32_from_r32)</span>
<span id="L64" class="LineNr"> 64 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L65" class="LineNr"> 65 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L66" class="LineNr"> 66 </span><span class="Special">% Reg[3].i = 10;</span>
<span id="L67" class="LineNr"> 67 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L68" class="LineNr"> 68 </span> 2b <span class="Constant">18</span> <span class="Comment"># subtract *EAX from EBX</span>
<span id="L69" class="LineNr"> 69 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L70" class="LineNr"> 70 </span><span class="traceContains">+run: subtract r/m32 from <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L71" class="LineNr"> 71 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L72" class="LineNr"> 72 </span><span class="traceContains">+run: storing 0x00000009</span>
<span id="L73" class="LineNr"> 73 </span>
<span id="L74" class="LineNr"> 74 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L75" class="LineNr"> 75 </span><span class="Normal">case</span> <span class="Constant">0x2b</span>: <span class="Delimiter">{</span> <span class="Comment">// subtract r/m32 from r32</span>
<span id="L76" class="LineNr"> 76 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L77" class="LineNr"> 77 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L78" class="LineNr"> 78 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"subtract r/m32 from "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L79" class="LineNr"> 79 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L80" class="LineNr"> 80 </span> <a href='010core.cc.html#L43'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>-<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>i<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span>
<span id="L81" class="LineNr"> 81 </span> <span class="Identifier">break</span><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="SalientComment">//:: and</span>
<span id="L85" class="LineNr"> 85 </span>
<span id="L86" class="LineNr"> 86 </span><span class="Delimiter">:(scenario and_r32_with_mem_at_r32)</span>
<span id="L87" class="LineNr"> 87 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L88" class="LineNr"> 88 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L89" class="LineNr"> 89 </span><span class="Special">% Reg[3].i = 0xff;</span>
<span id="L90" class="LineNr"> 90 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L91" class="LineNr"> 91 </span> <span class="Constant">21</span> <span class="Constant">18</span> <span class="Comment"># and EBX with *EAX</span>
<span id="L92" class="LineNr"> 92 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L93" class="LineNr"> 93 </span><span class="traceContains">+run: and <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L94" class="LineNr"> 94 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L95" class="LineNr"> 95 </span><span class="traceContains">+run: storing 0x0000000d</span>
<span id="L96" class="LineNr"> 96 </span>
<span id="L97" class="LineNr"> 97 </span><span class="Comment">//:</span>
<span id="L98" class="LineNr"> 98 </span>
<span id="L99" class="LineNr"> 99 </span><span class="Delimiter">:(scenario and_mem_at_r32_with_r32)</span>
<span id="L100" class="LineNr">100 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L101" class="LineNr">101 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x000000ff);</span>
<span id="L102" class="LineNr">102 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L103" class="LineNr">103 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L104" class="LineNr">104 </span> <span class="Constant">23</span> <span class="Constant">18</span> <span class="Comment"># and *EAX with EBX</span>
<span id="L105" class="LineNr">105 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L106" class="LineNr">106 </span><span class="traceContains">+run: and r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L107" class="LineNr">107 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L108" class="LineNr">108 </span><span class="traceContains">+run: storing 0x0000000d</span>
<span id="L109" class="LineNr">109 </span>
<span id="L110" class="LineNr">110 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L111" class="LineNr">111 </span><span class="Normal">case</span> <span class="Constant">0x23</span>: <span class="Delimiter">{</span> <span class="Comment">// and r/m32 with r32</span>
<span id="L112" class="LineNr">112 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L113" class="LineNr">113 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L114" class="LineNr">114 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"and r/m32 with "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L115" class="LineNr">115 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L116" class="LineNr">116 </span> <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>&<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>u<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span>
<span id="L117" class="LineNr">117 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L118" class="LineNr">118 </span><span class="Delimiter">}</span>
<span id="L119" class="LineNr">119 </span>
<span id="L120" class="LineNr">120 </span><span class="SalientComment">//:: or</span>
<span id="L121" class="LineNr">121 </span>
<span id="L122" class="LineNr">122 </span><span class="Delimiter">:(scenario or_r32_with_mem_at_r32)</span>
<span id="L123" class="LineNr">123 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L124" class="LineNr">124 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L125" class="LineNr">125 </span><span class="Special">% Reg[3].i = 0xa0b0c0d0;</span>
<span id="L126" class="LineNr">126 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L127" class="LineNr">127 </span> <span class="Error">09</span> <span class="Constant">18</span> <span class="Comment"># or EBX with *EAX</span>
<span id="L128" class="LineNr">128 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L129" class="LineNr">129 </span><span class="traceContains">+run: or <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L130" class="LineNr">130 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L131" class="LineNr">131 </span><span class="traceContains">+run: storing 0xaabbccdd</span>
<span id="L132" class="LineNr">132 </span>
<span id="L133" class="LineNr">133 </span><span class="Comment">//:</span>
<span id="L134" class="LineNr">134 </span>
<span id="L135" class="LineNr">135 </span><span class="Delimiter">:(scenario or_mem_at_r32_with_r32)</span>
<span id="L136" class="LineNr">136 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L137" class="LineNr">137 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L138" class="LineNr">138 </span><span class="Special">% Reg[3].i = 0xa0b0c0d0;</span>
<span id="L139" class="LineNr">139 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L140" class="LineNr">140 </span> 0b <span class="Constant">18</span> <span class="Comment"># or *EAX with EBX</span>
<span id="L141" class="LineNr">141 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L142" class="LineNr">142 </span><span class="traceContains">+run: or r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L143" class="LineNr">143 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L144" class="LineNr">144 </span><span class="traceContains">+run: storing 0xaabbccdd</span>
<span id="L145" class="LineNr">145 </span>
<span id="L146" class="LineNr">146 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L147" class="LineNr">147 </span><span class="Normal">case</span> <span class="Constant">0x0b</span>: <span class="Delimiter">{</span> <span class="Comment">// or r/m32 with r32</span>
<span id="L148" class="LineNr">148 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L149" class="LineNr">149 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L150" class="LineNr">150 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"or r/m32 with "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L151" class="LineNr">151 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L152" class="LineNr">152 </span> <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>|<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>u<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span>
<span id="L153" class="LineNr">153 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L154" class="LineNr">154 </span><span class="Delimiter">}</span>
<span id="L155" class="LineNr">155 </span>
<span id="L156" class="LineNr">156 </span><span class="SalientComment">//:: xor</span>
<span id="L157" class="LineNr">157 </span>
<span id="L158" class="LineNr">158 </span><span class="Delimiter">:(scenario xor_r32_with_mem_at_r32)</span>
<span id="L159" class="LineNr">159 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L160" class="LineNr">160 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0xaabb0c0d);</span>
<span id="L161" class="LineNr">161 </span><span class="Special">% Reg[3].i = 0xa0b0c0d0;</span>
<span id="L162" class="LineNr">162 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L163" class="LineNr">163 </span> <span class="Constant">31</span> <span class="Constant">18</span> <span class="Comment"># xor EBX with *EAX</span>
<span id="L164" class="LineNr">164 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L165" class="LineNr">165 </span><span class="traceContains">+run: xor <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L166" class="LineNr">166 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L167" class="LineNr">167 </span><span class="traceContains">+run: storing 0x0a0bccdd</span>
<span id="L168" class="LineNr">168 </span>
<span id="L169" class="LineNr">169 </span><span class="Comment">//:</span>
<span id="L170" class="LineNr">170 </span>
<span id="L171" class="LineNr">171 </span><span class="Delimiter">:(scenario xor_mem_at_r32_with_r32)</span>
<span id="L172" class="LineNr">172 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L173" class="LineNr">173 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L174" class="LineNr">174 </span><span class="Special">% Reg[3].i = 0xa0b0c0d0;</span>
<span id="L175" class="LineNr">175 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L176" class="LineNr">176 </span> <span class="Constant">33</span> <span class="Constant">18</span> <span class="Comment"># xor *EAX with EBX</span>
<span id="L177" class="LineNr">177 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L178" class="LineNr">178 </span><span class="traceContains">+run: xor r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L179" class="LineNr">179 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L180" class="LineNr">180 </span><span class="traceContains">+run: storing 0xaabbccdd</span>
<span id="L181" class="LineNr">181 </span>
<span id="L182" class="LineNr">182 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L183" class="LineNr">183 </span><span class="Normal">case</span> <span class="Constant">0x33</span>: <span class="Delimiter">{</span> <span class="Comment">// xor r/m32 with r32</span>
<span id="L184" class="LineNr">184 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L185" class="LineNr">185 </span> <span class="Normal">uint8_t</span> arg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L186" class="LineNr">186 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"xor r/m32 with "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L187" class="LineNr">187 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L188" class="LineNr">188 </span> <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>|<span class="Delimiter">,</span> Reg[arg1]<span class="Delimiter">.</span>u<span class="Delimiter">,</span> *arg2<span class="Delimiter">);</span>
<span id="L189" class="LineNr">189 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L190" class="LineNr">190 </span><span class="Delimiter">}</span>
<span id="L191" class="LineNr">191 </span>
<span id="L192" class="LineNr">192 </span><span class="SalientComment">//:: not</span>
<span id="L193" class="LineNr">193 </span>
<span id="L194" class="LineNr">194 </span><span class="Delimiter">:(scenario not_r32_with_mem_at_r32)</span>
<span id="L195" class="LineNr">195 </span><span class="Special">% Reg[3].i = 0x60;</span>
<span id="L196" class="LineNr">196 </span><span class="Comment"># word at 0x60 is 0x0f0f00ff</span>
<span id="L197" class="LineNr">197 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0f0f00ff);</span>
<span id="L198" class="LineNr">198 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L199" class="LineNr">199 </span> f7 <span class="PreProc">0</span><span class="Constant">3</span> <span class="Comment"># negate *EBX</span>
<span id="L200" class="LineNr">200 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 000 (unused) 011 (dest EBX)</span>
<span id="L201" class="LineNr">201 </span><span class="traceContains">+run: 'not' of r/m32</span>
<span id="L202" class="LineNr">202 </span><span class="traceContains">+run: effective address is 0x60 (EBX)</span>
<span id="L203" class="LineNr">203 </span><span class="traceContains">+run: storing 0xf0f0ff00</span>
<span id="L204" class="LineNr">204 </span>
<span id="L205" class="LineNr">205 </span><span class="SalientComment">//:: compare (cmp)</span>
<span id="L206" class="LineNr">206 </span>
<span id="L207" class="LineNr">207 </span><span class="Delimiter">:(scenario compare_mem_at_r32_with_r32_greater)</span>
<span id="L208" class="LineNr">208 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L209" class="LineNr">209 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L210" class="LineNr">210 </span><span class="Special">% Reg[3].i = 0x0a0b0c07;</span>
<span id="L211" class="LineNr">211 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L212" class="LineNr">212 </span> <span class="Constant">39</span> <span class="Constant">18</span> <span class="Comment"># compare EBX with *EAX</span>
<span id="L213" class="LineNr">213 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L214" class="LineNr">214 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L215" class="LineNr">215 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L216" class="LineNr">216 </span><span class="traceContains">+run: SF=0; ZF=0; OF=0</span>
<span id="L217" class="LineNr">217 </span>
<span id="L218" class="LineNr">218 </span><span class="Delimiter">:(scenario compare_mem_at_r32_with_r32_lesser)</span>
<span id="L219" class="LineNr">219 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L220" class="LineNr">220 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c07);</span>
<span id="L221" class="LineNr">221 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L222" class="LineNr">222 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L223" class="LineNr">223 </span> <span class="Constant">39</span> <span class="Constant">18</span> <span class="Comment"># compare EBX with *EAX</span>
<span id="L224" class="LineNr">224 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L225" class="LineNr">225 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L226" class="LineNr">226 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L227" class="LineNr">227 </span><span class="traceContains">+run: SF=1; ZF=0; OF=0</span>
<span id="L228" class="LineNr">228 </span>
<span id="L229" class="LineNr">229 </span><span class="Delimiter">:(scenario compare_mem_at_r32_with_r32_equal)</span>
<span id="L230" class="LineNr">230 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L231" class="LineNr">231 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L232" class="LineNr">232 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L233" class="LineNr">233 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L234" class="LineNr">234 </span> <span class="Constant">39</span> <span class="Constant">18</span> <span class="Comment"># compare EBX with *EAX</span>
<span id="L235" class="LineNr">235 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L236" class="LineNr">236 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L237" class="LineNr">237 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L238" class="LineNr">238 </span><span class="traceContains">+run: SF=0; ZF=1; OF=0</span>
<span id="L239" class="LineNr">239 </span>
<span id="L240" class="LineNr">240 </span><span class="Comment">//:</span>
<span id="L241" class="LineNr">241 </span>
<span id="L242" class="LineNr">242 </span><span class="Delimiter">:(scenario compare_r32_with_mem_at_r32_greater)</span>
<span id="L243" class="LineNr">243 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L244" class="LineNr">244 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c07);</span>
<span id="L245" class="LineNr">245 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L246" class="LineNr">246 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L247" class="LineNr">247 </span> 3b <span class="Constant">18</span> <span class="Comment"># compare *EAX with EBX</span>
<span id="L248" class="LineNr">248 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L249" class="LineNr">249 </span><span class="traceContains">+run: compare r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L250" class="LineNr">250 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L251" class="LineNr">251 </span><span class="traceContains">+run: SF=0; ZF=0; OF=0</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L254" class="LineNr">254 </span><span class="Normal">case</span> <span class="Constant">0x3b</span>: <span class="Delimiter">{</span> <span class="Comment">// set SF if r32 < r/m32</span>
<span id="L255" class="LineNr">255 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L256" class="LineNr">256 </span> <span class="Normal">uint8_t</span> reg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L257" class="LineNr">257 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"compare r/m32 with "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L258" class="LineNr">258 </span> <span class="Normal">int32_t</span> arg1 = Reg[reg1]<span class="Delimiter">.</span>i<span class="Delimiter">;</span>
<span id="L259" class="LineNr">259 </span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L260" class="LineNr">260 </span> <span class="Normal">int32_t</span> tmp1 = arg1 - *arg2<span class="Delimiter">;</span>
<span id="L261" class="LineNr">261 </span> SF = <span class="Delimiter">(</span>tmp1 < <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L262" class="LineNr">262 </span> ZF = <span class="Delimiter">(</span>tmp1 == <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L263" class="LineNr">263 </span> <span class="Normal">int64_t</span> tmp2 = arg1 - *arg2<span class="Delimiter">;</span>
<span id="L264" class="LineNr">264 </span> <a href='010core.cc.html#L33'>OF</a> = <span class="Delimiter">(</span>tmp1 != tmp2<span class="Delimiter">);</span>
<span id="L265" class="LineNr">265 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"SF="</span> << SF << <span class="Constant">"; ZF="</span> << ZF << <span class="Constant">"; OF="</span> << <a href='010core.cc.html#L33'>OF</a> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L266" class="LineNr">266 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L267" class="LineNr">267 </span><span class="Delimiter">}</span>
<span id="L268" class="LineNr">268 </span>
<span id="L269" class="LineNr">269 </span><span class="Delimiter">:(scenario compare_r32_with_mem_at_r32_lesser)</span>
<span id="L270" class="LineNr">270 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L271" class="LineNr">271 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L272" class="LineNr">272 </span><span class="Special">% Reg[3].i = 0x0a0b0c07;</span>
<span id="L273" class="LineNr">273 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L274" class="LineNr">274 </span> 3b <span class="Constant">18</span> <span class="Comment"># compare *EAX with EBX</span>
<span id="L275" class="LineNr">275 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L276" class="LineNr">276 </span><span class="traceContains">+run: compare r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L277" class="LineNr">277 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L278" class="LineNr">278 </span><span class="traceContains">+run: SF=1; ZF=0; OF=0</span>
<span id="L279" class="LineNr">279 </span>
<span id="L280" class="LineNr">280 </span><span class="Delimiter">:(scenario compare_r32_with_mem_at_r32_equal)</span>
<span id="L281" class="LineNr">281 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L282" class="LineNr">282 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0a0b0c0d);</span>
<span id="L283" class="LineNr">283 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L284" class="LineNr">284 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L285" class="LineNr">285 </span> 3b <span class="Constant">18</span> <span class="Comment"># compare *EAX with EBX</span>
<span id="L286" class="LineNr">286 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L287" class="LineNr">287 </span><span class="traceContains">+run: compare r/m32 with <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L288" class="LineNr">288 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L289" class="LineNr">289 </span><span class="traceContains">+run: SF=0; ZF=1; OF=0</span>
<span id="L290" class="LineNr">290 </span>
<span id="L291" class="LineNr">291 </span><span class="SalientComment">//:: copy (mov)</span>
<span id="L292" class="LineNr">292 </span>
<span id="L293" class="LineNr">293 </span><span class="Delimiter">:(scenario copy_r32_to_mem_at_r32)</span>
<span id="L294" class="LineNr">294 </span><span class="Special">% Reg[3].i = 0xaf;</span>
<span id="L295" class="LineNr">295 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L296" class="LineNr">296 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L297" class="LineNr">297 </span> <span class="Constant">89</span> <span class="Constant">18</span> <span class="Comment"># copy EBX to *EAX</span>
<span id="L298" class="LineNr">298 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L299" class="LineNr">299 </span><span class="traceContains">+run: copy <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L300" class="LineNr">300 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L301" class="LineNr">301 </span><span class="traceContains">+run: storing 0x000000af</span>
<span id="L302" class="LineNr">302 </span>
<span id="L303" class="LineNr">303 </span><span class="Comment">//:</span>
<span id="L304" class="LineNr">304 </span>
<span id="L305" class="LineNr">305 </span><span class="Delimiter">:(scenario copy_mem_at_r32_to_r32)</span>
<span id="L306" class="LineNr">306 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L307" class="LineNr">307 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x000000af);</span>
<span id="L308" class="LineNr">308 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L309" class="LineNr">309 </span> 8b <span class="Constant">18</span> <span class="Comment"># copy *EAX to EBX</span>
<span id="L310" class="LineNr">310 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)</span>
<span id="L311" class="LineNr">311 </span><span class="traceContains">+run: copy r/m32 to <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L312" class="LineNr">312 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L313" class="LineNr">313 </span><span class="traceContains">+run: storing 0x000000af</span>
<span id="L314" class="LineNr">314 </span>
<span id="L315" class="LineNr">315 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L316" class="LineNr">316 </span><span class="Normal">case</span> <span class="Constant">0x8b</span>: <span class="Delimiter">{</span> <span class="Comment">// copy r32 to r/m32</span>
<span id="L317" class="LineNr">317 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L318" class="LineNr">318 </span> <span class="Normal">uint8_t</span> reg1 = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L319" class="LineNr">319 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"copy r/m32 to "</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg1<span class="Delimiter">)</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L320" class="LineNr">320 </span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L321" class="LineNr">321 </span> Reg[reg1]<span class="Delimiter">.</span>i = *arg2<span class="Delimiter">;</span>
<span id="L322" class="LineNr">322 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"storing 0x"</span> << <a href='010core.cc.html#L244'>HEXWORD</a> << *arg2 << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L323" class="LineNr">323 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L324" class="LineNr">324 </span><span class="Delimiter">}</span>
<span id="L325" class="LineNr">325 </span>
<span id="L326" class="LineNr">326 </span><span class="SalientComment">//:: jump</span>
<span id="L327" class="LineNr">327 </span>
<span id="L328" class="LineNr">328 </span><span class="Delimiter">:(scenario jump_mem_at_r32)</span>
<span id="L329" class="LineNr">329 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L330" class="LineNr">330 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 8);</span>
<span id="L331" class="LineNr">331 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L332" class="LineNr">332 </span> ff <span class="Constant">20</span> <span class="Comment"># jump to *EAX</span>
<span id="L333" class="LineNr">333 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 100 (jump to r/m32) 000 (src EAX)</span>
<span id="L334" class="LineNr">334 </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="L335" class="LineNr">335 </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="L336" class="LineNr">336 </span><span class="traceContains">+run: inst: 0x00000001</span>
<span id="L337" class="LineNr">337 </span><span class="traceContains">+run: jump to r/m32</span>
<span id="L338" class="LineNr">338 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L339" class="LineNr">339 </span><span class="traceContains">+run: jumping to 0x00000008</span>
<span id="L340" class="LineNr">340 </span><span class="traceContains">+run: inst: 0x00000008</span>
<span id="L341" class="LineNr">341 </span><span class="traceAbsent">-run: inst: 0x00000003</span>
<span id="L342" class="LineNr">342 </span>
<span id="L343" class="LineNr">343 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L344" class="LineNr">344 </span><span class="Normal">case</span> <span class="Constant">0xff</span>: <span class="Delimiter">{</span>
<span id="L345" class="LineNr">345 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L346" class="LineNr">346 </span> <span class="Normal">uint8_t</span> subop = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span> <span class="Comment">// middle 3 'reg opcode' bits</span>
<span id="L347" class="LineNr">347 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>subop<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L348" class="LineNr">348 </span> <span class="Normal">case</span> <span class="Constant">4</span>: <span class="Delimiter">{</span> <span class="Comment">// jump to r/m32</span>
<span id="L349" class="LineNr">349 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jump to r/m32"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L350" class="LineNr">350 </span> <span class="Normal">int32_t</span>* arg2 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L351" class="LineNr">351 </span> <a href='010core.cc.html#L23'>EIP</a> = *arg2<span class="Delimiter">;</span>
<span id="L352" class="LineNr">352 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"jumping to 0x"</span> << <a href='010core.cc.html#L244'>HEXWORD</a> << <a href='010core.cc.html#L23'>EIP</a> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L353" class="LineNr">353 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L354" class="LineNr">354 </span> <span class="Delimiter">}</span>
<span id="L355" class="LineNr">355 </span> <span class="Comment">// End Op ff Subops</span>
<span id="L356" class="LineNr">356 </span> <span class="Delimiter">}</span>
<span id="L357" class="LineNr">357 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L358" class="LineNr">358 </span><span class="Delimiter">}</span>
<span id="L359" class="LineNr">359 </span>
<span id="L360" class="LineNr">360 </span><span class="SalientComment">//:: push</span>
<span id="L361" class="LineNr">361 </span>
<span id="L362" class="LineNr">362 </span><span class="Delimiter">:(scenario push_mem_at_r32)</span>
<span id="L363" class="LineNr">363 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L364" class="LineNr">364 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x000000af);</span>
<span id="L365" class="LineNr">365 </span><span class="Special">% Reg[ESP].u = 0x14;</span>
<span id="L366" class="LineNr">366 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L367" class="LineNr">367 </span> ff <span class="Constant">30</span> <span class="Comment"># push *EAX to stack</span>
<span id="L368" class="LineNr">368 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 110 (push r/m32) 000 (src EAX)</span>
<span id="L369" class="LineNr">369 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L283'>push</a> r/m32</span>
<span id="L370" class="LineNr">370 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L371" class="LineNr">371 </span><span class="traceContains">+run: decrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000010</span>
<span id="L372" class="LineNr">372 </span><span class="traceContains">+run: pushing value 0x000000af</span>
<span id="L373" class="LineNr">373 </span>
<span id="L374" class="LineNr">374 </span><span class="Delimiter">:(before "End Op ff Subops")</span>
<span id="L375" class="LineNr">375 </span><span class="Normal">case</span> <span class="Constant">6</span>: <span class="Delimiter">{</span> <span class="Comment">// push r/m32 to stack</span>
<span id="L376" class="LineNr">376 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"push r/m32"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L377" class="LineNr">377 </span> <span class="Normal">const</span> <span class="Normal">int32_t</span>* val = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L378" class="LineNr">378 </span> <a href='011direct_addressing.cc.html#L283'>push</a><span class="Delimiter">(</span>*val<span class="Delimiter">);</span>
<span id="L379" class="LineNr">379 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L380" class="LineNr">380 </span><span class="Delimiter">}</span>
<span id="L381" class="LineNr">381 </span>
<span id="L382" class="LineNr">382 </span><span class="SalientComment">//:: pop</span>
<span id="L383" class="LineNr">383 </span>
<span id="L384" class="LineNr">384 </span><span class="Delimiter">:(scenario pop_mem_at_r32)</span>
<span id="L385" class="LineNr">385 </span><span class="Special">% Reg[0].i = 0x60;</span>
<span id="L386" class="LineNr">386 </span><span class="Special">% Reg[ESP].u = 0x10;</span>
<span id="L387" class="LineNr">387 </span><span class="Special">% SET_WORD_IN_MEM(0x10, 0x00000030);</span>
<span id="L388" class="LineNr">388 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L389" class="LineNr">389 </span> <span class="Constant">8f</span> <span class="PreProc">0</span><span class="Constant">0</span> <span class="Comment"># pop stack into *EAX</span>
<span id="L390" class="LineNr">390 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 000 (pop r/m32) 000 (dest EAX)</span>
<span id="L391" class="LineNr">391 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L316'>pop</a> into r/m32</span>
<span id="L392" class="LineNr">392 </span><span class="traceContains">+run: effective address is 0x60 (EAX)</span>
<span id="L393" class="LineNr">393 </span><span class="traceContains">+run: popping value 0x00000030</span>
<span id="L394" class="LineNr">394 </span><span class="traceContains">+run: incrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000014</span>
<span id="L395" class="LineNr">395 </span>
<span id="L396" class="LineNr">396 </span><span class="Delimiter">:(before "End Single-Byte Opcodes")</span>
<span id="L397" class="LineNr">397 </span><span class="Normal">case</span> <span class="Constant">0x8f</span>: <span class="Delimiter">{</span> <span class="Comment">// pop stack into r/m32</span>
<span id="L398" class="LineNr">398 </span> <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L399" class="LineNr">399 </span> <span class="Normal">uint8_t</span> subop = <span class="Delimiter">(</span>modrm>><span class="Constant">3</span><span class="Delimiter">)</span>&<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L400" class="LineNr">400 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>subop<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L401" class="LineNr">401 </span> <span class="Normal">case</span> <span class="Constant">0</span>: <span class="Delimiter">{</span>
<span id="L402" class="LineNr">402 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"pop into r/m32"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L403" class="LineNr">403 </span> <span class="Normal">int32_t</span>* dest = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L404" class="LineNr">404 </span> *dest = <a href='011direct_addressing.cc.html#L316'>pop</a><span class="Delimiter">();</span>
<span id="L405" class="LineNr">405 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L406" class="LineNr">406 </span> <span class="Delimiter">}</span>
<span id="L407" class="LineNr">407 </span> <span class="Delimiter">}</span>
<span id="L408" class="LineNr">408 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L409" class="LineNr">409 </span><span class="Delimiter">}</span>
<span id="L410" class="LineNr">410 </span>
<span id="L411" class="LineNr">411 </span><span class="SalientComment">//:: special-case for loading address from disp32 rather than register</span>
<span id="L412" class="LineNr">412 </span>
<span id="L413" class="LineNr">413 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_displacement)</span>
<span id="L414" class="LineNr">414 </span><span class="Special">% Reg[3].i = 0x10; // source</span>
<span id="L415" class="LineNr">415 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L416" class="LineNr">416 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L417" class="LineNr">417 </span> <span class="PreProc">0</span><span class="Constant">1</span> 1d <span class="Constant">60</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="Comment"># add EBX to *0x60</span>
<span id="L418" class="LineNr">418 </span><span class="Comment"># ModR/M in binary: 00 (indirect mode) 011 (src EBX) 101 (dest in disp32)</span>
<span id="L419" class="LineNr">419 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L420" class="LineNr">420 </span><span class="traceContains">+run: effective address is 0x60 (disp32)</span>
<span id="L421" class="LineNr">421 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L422" class="LineNr">422 </span>
<span id="L423" class="LineNr">423 </span><span class="Delimiter">:(before "End Mod 0 Special-cases(addr)")</span>
<span id="L424" class="LineNr">424 </span><span class="Normal">case</span> <span class="Constant">5</span>: <span class="Comment">// exception: mod 0b00 rm 0b101 => incoming disp32</span>
<span id="L425" class="LineNr">425 </span> addr = <a href='010core.cc.html#L219'>imm32</a><span class="Delimiter">();</span>
<span id="L426" class="LineNr">426 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is 0x"</span> << std::hex << addr << <span class="Constant">" (disp32)"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L427" class="LineNr">427 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L428" class="LineNr">428 </span>
<span id="L429" class="LineNr">429 </span><span class="Comment">//:</span>
<span id="L430" class="LineNr">430 </span>
<span id="L431" class="LineNr">431 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_r32_plus_disp8)</span>
<span id="L432" class="LineNr">432 </span><span class="Special">% Reg[3].i = 0x10; // source</span>
<span id="L433" class="LineNr">433 </span><span class="Special">% Reg[0].i = 0x5e; // dest</span>
<span id="L434" class="LineNr">434 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L435" class="LineNr">435 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L436" class="LineNr">436 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">58</span> <span class="PreProc">0</span><span class="Constant">2</span> <span class="Comment"># add EBX to *(EAX+2)</span>
<span id="L437" class="LineNr">437 </span><span class="Comment"># ModR/M in binary: 01 (indirect+disp8 mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L438" class="LineNr">438 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L439" class="LineNr">439 </span><span class="traceContains">+run: effective address is initially 0x5e (EAX)</span>
<span id="L440" class="LineNr">440 </span><span class="traceContains">+run: effective address is 0x60 (after adding disp8)</span>
<span id="L441" class="LineNr">441 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L442" class="LineNr">442 </span>
<span id="L443" class="LineNr">443 </span><span class="Delimiter">:(before "End Mod Special-cases(addr)")</span>
<span id="L444" class="LineNr">444 </span><span class="Normal">case</span> <span class="Constant">1</span>: <span class="Comment">// indirect + disp8 addressing</span>
<span id="L445" class="LineNr">445 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>rm<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L446" class="LineNr">446 </span> <span class="Normal">default</span>:
<span id="L447" class="LineNr">447 </span> addr = Reg[rm]<span class="Delimiter">.</span>u<span class="Delimiter">;</span>
<span id="L448" class="LineNr">448 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is initially 0x"</span> << std::hex << addr << <span class="Constant">" ("</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>rm<span class="Delimiter">)</span> << <span class="Constant">")"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L449" class="LineNr">449 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L450" class="LineNr">450 </span> <span class="Comment">// End Mod 1 Special-cases(addr)</span>
<span id="L451" class="LineNr">451 </span> <span class="Delimiter">}</span>
<span id="L452" class="LineNr">452 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>addr > <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L453" class="LineNr">453 </span> addr += <span class="Normal">static_cast</span><<span class="Normal">int8_t</span>><span class="Delimiter">(</span><a href='010core.cc.html#L214'>next</a><span class="Delimiter">());</span>
<span id="L454" class="LineNr">454 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is 0x"</span> << std::hex << addr << <span class="Constant">" (after adding disp8)"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L455" class="LineNr">455 </span> <span class="Delimiter">}</span>
<span id="L456" class="LineNr">456 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L457" class="LineNr">457 </span>
<span id="L458" class="LineNr">458 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_r32_plus_negative_disp8)</span>
<span id="L459" class="LineNr">459 </span><span class="Special">% Reg[3].i = 0x10; // source</span>
<span id="L460" class="LineNr">460 </span><span class="Special">% Reg[0].i = 0x61; // dest</span>
<span id="L461" class="LineNr">461 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L462" class="LineNr">462 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L463" class="LineNr">463 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">58</span> ff <span class="Comment"># add EBX to *(EAX-1)</span>
<span id="L464" class="LineNr">464 </span><span class="Comment"># ModR/M in binary: 01 (indirect+disp8 mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L465" class="LineNr">465 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L466" class="LineNr">466 </span><span class="traceContains">+run: effective address is initially 0x61 (EAX)</span>
<span id="L467" class="LineNr">467 </span><span class="traceContains">+run: effective address is 0x60 (after adding disp8)</span>
<span id="L468" class="LineNr">468 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L469" class="LineNr">469 </span>
<span id="L470" class="LineNr">470 </span><span class="Comment">//:</span>
<span id="L471" class="LineNr">471 </span>
<span id="L472" class="LineNr">472 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_r32_plus_disp32)</span>
<span id="L473" class="LineNr">473 </span><span class="Special">% Reg[3].i = 0x10; // source</span>
<span id="L474" class="LineNr">474 </span><span class="Special">% Reg[0].i = 0x5e; // dest</span>
<span id="L475" class="LineNr">475 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L476" class="LineNr">476 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L477" class="LineNr">477 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">98</span> <span class="PreProc">0</span><span class="Constant">2</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="Comment"># add EBX to *(EAX+2)</span>
<span id="L478" class="LineNr">478 </span><span class="Comment"># ModR/M in binary: 10 (indirect+disp32 mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L479" class="LineNr">479 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L480" class="LineNr">480 </span><span class="traceContains">+run: effective address is initially 0x5e (EAX)</span>
<span id="L481" class="LineNr">481 </span><span class="traceContains">+run: effective address is 0x60 (after adding disp32)</span>
<span id="L482" class="LineNr">482 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L483" class="LineNr">483 </span>
<span id="L484" class="LineNr">484 </span><span class="Delimiter">:(before "End Mod Special-cases(addr)")</span>
<span id="L485" class="LineNr">485 </span><span class="Normal">case</span> <span class="Constant">2</span>: <span class="Comment">// indirect + disp32 addressing</span>
<span id="L486" class="LineNr">486 </span> <span class="Normal">switch</span> <span class="Delimiter">(</span>rm<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L487" class="LineNr">487 </span> <span class="Normal">default</span>:
<span id="L488" class="LineNr">488 </span> addr = Reg[rm]<span class="Delimiter">.</span>u<span class="Delimiter">;</span>
<span id="L489" class="LineNr">489 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is initially 0x"</span> << std::hex << addr << <span class="Constant">" ("</span> << <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>rm<span class="Delimiter">)</span> << <span class="Constant">")"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L490" class="LineNr">490 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L491" class="LineNr">491 </span> <span class="Comment">// End Mod 2 Special-cases(addr)</span>
<span id="L492" class="LineNr">492 </span> <span class="Delimiter">}</span>
<span id="L493" class="LineNr">493 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>addr > <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L494" class="LineNr">494 </span> addr += <a href='010core.cc.html#L219'>imm32</a><span class="Delimiter">();</span>
<span id="L495" class="LineNr">495 </span> <a href='003trace.cc.html#L160'>trace</a><span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"effective address is 0x"</span> << std::hex << addr << <span class="Constant">" (after adding disp32)"</span> << <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L496" class="LineNr">496 </span> <span class="Delimiter">}</span>
<span id="L497" class="LineNr">497 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L498" class="LineNr">498 </span>
<span id="L499" class="LineNr">499 </span><span class="Delimiter">:(scenario add_r32_to_mem_at_r32_plus_negative_disp32)</span>
<span id="L500" class="LineNr">500 </span><span class="Special">% Reg[3].i = 0x10; // source</span>
<span id="L501" class="LineNr">501 </span><span class="Special">% Reg[0].i = 0x61; // dest</span>
<span id="L502" class="LineNr">502 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 1);</span>
<span id="L503" class="LineNr">503 </span><span class="Comment"># op ModR/M SIB displacement immediate</span>
<span id="L504" class="LineNr">504 </span> <span class="PreProc">0</span><span class="Constant">1</span> <span class="Constant">98</span> ff ff ff ff <span class="Comment"># add EBX to *(EAX-1)</span>
<span id="L505" class="LineNr">505 </span><span class="Comment"># ModR/M in binary: 10 (indirect+disp32 mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L506" class="LineNr">506 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L507" class="LineNr">507 </span><span class="traceContains">+run: effective address is initially 0x61 (EAX)</span>
<span id="L508" class="LineNr">508 </span><span class="traceContains">+run: effective address is 0x60 (after adding disp32)</span>
<span id="L509" class="LineNr">509 </span><span class="traceContains">+run: storing 0x00000011</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|