about summary refs log tree commit diff stats
path: root/html/subx/011direct_addressing.cc.html
blob: b1441467e44be1672d331320cffac2792fbde766 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
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
<!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/011direct_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; }
.cSpecial { color: #008000; }
.traceContains { color: #008000; }
.Error { color: #ffffff; background-color: #ff6060; padding-bottom: 1px; }
.LineNr { color: #444444; }
.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 directly on a register</span>
<span id="L2" class="LineNr">  2 </span>
<span id="L3" class="LineNr">  3 </span><span class="Delimiter">:(scenario add_r32_to_r32)</span>
<span id="L4" class="LineNr">  4 </span><span class="Special">% Reg[0].i = 0x10;</span>
<span id="L5" class="LineNr">  5 </span><span class="Special">% Reg[3].i = 1;</span>
<span id="L6" class="LineNr">  6 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L7" class="LineNr">  7 </span>  <span class="PreProc">0</span><span class="Constant">1</span>  d8                                      <span class="Comment"># add EBX to EAX</span>
<span id="L8" class="LineNr">  8 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L9" class="LineNr">  9 </span><span class="traceContains">+run: add <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L10" class="LineNr"> 10 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L11" class="LineNr"> 11 </span><span class="traceContains">+run: storing 0x00000011</span>
<span id="L12" class="LineNr"> 12 </span>
<span id="L13" class="LineNr"> 13 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L14" class="LineNr"> 14 </span><span class="Normal">case</span> <span class="Constant">0x01</span>: <span class="Delimiter">{</span>  <span class="Comment">// add r32 to r/m32</span>
<span id="L15" class="LineNr"> 15 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L16" class="LineNr"> 16 </span>  <span class="Normal">uint8_t</span> arg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L17" class="LineNr"> 17 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;add &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; to r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L18" class="LineNr"> 18 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L19" class="LineNr"> 19 </span>  <a href='010core.cc.html#L43'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>+<span class="Delimiter">,</span> *arg1<span class="Delimiter">,</span> Reg[arg2]<span class="Delimiter">.</span>i<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="Delimiter">}</span>
<span id="L22" class="LineNr"> 22 </span>
<span id="L23" class="LineNr"> 23 </span><span class="Delimiter">:(code)</span>
<span id="L24" class="LineNr"> 24 </span><span class="Comment">// Implement tables 2-2 and 2-3 in the Intel manual, Volume 2.</span>
<span id="L25" class="LineNr"> 25 </span><span class="Comment">// We return a pointer so that instructions can write to multiple bytes in</span>
<span id="L26" class="LineNr"> 26 </span><span class="Comment">// 'Mem' at once.</span>
<span id="L27" class="LineNr"> 27 </span><span class="Normal">int32_t</span>* <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span><span class="Normal">uint8_t</span> modrm<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L28" class="LineNr"> 28 </span>  <span class="Normal">uint8_t</span> mod = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">6</span><span class="Delimiter">);</span>
<span id="L29" class="LineNr"> 29 </span>  <span class="Comment">// ignore middle 3 'reg opcode' bits</span>
<span id="L30" class="LineNr"> 30 </span>  <span class="Normal">uint8_t</span> rm = modrm &amp; <span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span>  <span class="Normal">uint32_t</span> addr = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L32" class="LineNr"> 32 </span>  <span class="Normal">switch</span> <span class="Delimiter">(</span>mod<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L33" class="LineNr"> 33 </span>  <span class="Normal">case</span> <span class="Constant">3</span>:
<span id="L34" class="LineNr"> 34 </span>    <span class="Comment">// mod 3 is just register direct addressing</span>
<span id="L35" class="LineNr"> 35 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;r/m32 is &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>rm<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L36" class="LineNr"> 36 </span>    <span class="Identifier">return</span> &amp;Reg[rm]<span class="Delimiter">.</span>i<span class="Delimiter">;</span>
<span id="L37" class="LineNr"> 37 </span>  <span class="Comment">// End Mod Special-cases(addr)</span>
<span id="L38" class="LineNr"> 38 </span>  <span class="Normal">default</span>:
<span id="L39" class="LineNr"> 39 </span>    cerr &lt;&lt; <span class="Constant">&quot;unrecognized mod bits: &quot;</span> &lt;&lt; <a href='010core.cc.html#L246'>NUM</a><span class="Delimiter">(</span>mod<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span id="L40" class="LineNr"> 40 </span>    exit<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L41" class="LineNr"> 41 </span>  <span class="Delimiter">}</span>
<span id="L42" class="LineNr"> 42 </span>  <span class="Comment">//: other mods are indirect, and they'll set addr appropriately</span>
<span id="L43" class="LineNr"> 43 </span>  assert<span class="Delimiter">(</span>addr &gt; <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L44" class="LineNr"> 44 </span>  assert<span class="Delimiter">(</span>addr + <span class="Normal">sizeof</span><span class="Delimiter">(</span><span class="Normal">int32_t</span><span class="Delimiter">)</span> &lt;= <a href='010core.cc.html#L67'>Mem</a><span class="Delimiter">.</span>size<span class="Delimiter">());</span>
<span id="L45" class="LineNr"> 45 </span>  <span class="Identifier">return</span> <span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">int32_t</span>*&gt;<span class="Delimiter">(</span>&amp;Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>addr<span class="Delimiter">));</span>  <span class="Comment">// rely on the host itself being in little-endian order</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_r32)</span>
<span id="L51" class="LineNr"> 51 </span><span class="Special">% Reg[0].i = 10;</span>
<span id="L52" class="LineNr"> 52 </span><span class="Special">% Reg[3].i = 1;</span>
<span id="L53" class="LineNr"> 53 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L54" class="LineNr"> 54 </span>  <span class="Constant">29</span>  d8                                      <span class="Comment"># subtract EBX from EAX</span>
<span id="L55" class="LineNr"> 55 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L56" class="LineNr"> 56 </span><span class="traceContains">+run: subtract <a href='010core.cc.html#L10'>EBX</a> from r/m32</span>
<span id="L57" class="LineNr"> 57 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L58" class="LineNr"> 58 </span><span class="traceContains">+run: storing 0x00000009</span>
<span id="L59" class="LineNr"> 59 </span>
<span id="L60" class="LineNr"> 60 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L61" class="LineNr"> 61 </span><span class="Normal">case</span> <span class="Constant">0x29</span>: <span class="Delimiter">{</span>  <span class="Comment">// subtract r32 from r/m32</span>
<span id="L62" class="LineNr"> 62 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L63" class="LineNr"> 63 </span>  <span class="Normal">uint8_t</span> arg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L64" class="LineNr"> 64 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;subtract &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; from r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L65" class="LineNr"> 65 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L66" class="LineNr"> 66 </span>  <a href='010core.cc.html#L43'>BINARY_ARITHMETIC_OP</a><span class="Delimiter">(</span>-<span class="Delimiter">,</span> *arg1<span class="Delimiter">,</span> Reg[arg2]<span class="Delimiter">.</span>i<span class="Delimiter">);</span>
<span id="L67" class="LineNr"> 67 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L68" class="LineNr"> 68 </span><span class="Delimiter">}</span>
<span id="L69" class="LineNr"> 69 </span>
<span id="L70" class="LineNr"> 70 </span><span class="SalientComment">//:: and</span>
<span id="L71" class="LineNr"> 71 </span>
<span id="L72" class="LineNr"> 72 </span><span class="Delimiter">:(scenario and_r32_with_r32)</span>
<span id="L73" class="LineNr"> 73 </span><span class="Special">% Reg[0].i = 0x0a0b0c0d;</span>
<span id="L74" class="LineNr"> 74 </span><span class="Special">% Reg[3].i = 0x000000ff;</span>
<span id="L75" class="LineNr"> 75 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L76" class="LineNr"> 76 </span>  <span class="Constant">21</span>  d8                                      <span class="Comment"># and EBX with destination EAX</span>
<span id="L77" class="LineNr"> 77 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L78" class="LineNr"> 78 </span><span class="traceContains">+run: and <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L79" class="LineNr"> 79 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L80" class="LineNr"> 80 </span><span class="traceContains">+run: storing 0x0000000d</span>
<span id="L81" class="LineNr"> 81 </span>
<span id="L82" class="LineNr"> 82 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L83" class="LineNr"> 83 </span><span class="Normal">case</span> <span class="Constant">0x21</span>: <span class="Delimiter">{</span>  <span class="Comment">// and r32 with r/m32</span>
<span id="L84" class="LineNr"> 84 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L85" class="LineNr"> 85 </span>  <span class="Normal">uint8_t</span> arg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L86" class="LineNr"> 86 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;and &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; with r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L87" class="LineNr"> 87 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L88" class="LineNr"> 88 </span>  <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>&amp;<span class="Delimiter">,</span> *arg1<span class="Delimiter">,</span> Reg[arg2]<span class="Delimiter">.</span>u<span class="Delimiter">);</span>
<span id="L89" class="LineNr"> 89 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L90" class="LineNr"> 90 </span><span class="Delimiter">}</span>
<span id="L91" class="LineNr"> 91 </span>
<span id="L92" class="LineNr"> 92 </span><span class="SalientComment">//:: or</span>
<span id="L93" class="LineNr"> 93 </span>
<span id="L94" class="LineNr"> 94 </span><span class="Delimiter">:(scenario or_r32_with_r32)</span>
<span id="L95" class="LineNr"> 95 </span><span class="Special">% Reg[0].i = 0x0a0b0c0d;</span>
<span id="L96" class="LineNr"> 96 </span><span class="Special">% Reg[3].i = 0xa0b0c0d0;</span>
<span id="L97" class="LineNr"> 97 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L98" class="LineNr"> 98 </span>  <span class="Error">09</span>  d8                                      <span class="Comment"># or EBX with destination EAX</span>
<span id="L99" class="LineNr"> 99 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L100" class="LineNr">100 </span><span class="traceContains">+run: or <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L101" class="LineNr">101 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L102" class="LineNr">102 </span><span class="traceContains">+run: storing 0xaabbccdd</span>
<span id="L103" class="LineNr">103 </span>
<span id="L104" class="LineNr">104 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L105" class="LineNr">105 </span><span class="Normal">case</span> <span class="Constant">0x09</span>: <span class="Delimiter">{</span>  <span class="Comment">// or r32 with r/m32</span>
<span id="L106" class="LineNr">106 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L107" class="LineNr">107 </span>  <span class="Normal">uint8_t</span> arg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L108" class="LineNr">108 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;or &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; with r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L109" class="LineNr">109 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L110" class="LineNr">110 </span>  <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>|<span class="Delimiter">,</span> *arg1<span class="Delimiter">,</span> Reg[arg2]<span class="Delimiter">.</span>u<span class="Delimiter">);</span>
<span id="L111" class="LineNr">111 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
<span id="L113" class="LineNr">113 </span>
<span id="L114" class="LineNr">114 </span><span class="SalientComment">//:: xor</span>
<span id="L115" class="LineNr">115 </span>
<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(scenario xor_r32_with_r32)</span>
<span id="L117" class="LineNr">117 </span><span class="Special">% Reg[0].i = 0x0a0b0c0d;</span>
<span id="L118" class="LineNr">118 </span><span class="Special">% Reg[3].i = 0xaabbc0d0;</span>
<span id="L119" class="LineNr">119 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L120" class="LineNr">120 </span>  <span class="Constant">31</span>  d8                                      <span class="Comment"># xor EBX with destination EAX</span>
<span id="L121" class="LineNr">121 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L122" class="LineNr">122 </span><span class="traceContains">+run: xor <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L123" class="LineNr">123 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L124" class="LineNr">124 </span><span class="traceContains">+run: storing 0xa0b0ccdd</span>
<span id="L125" class="LineNr">125 </span>
<span id="L126" class="LineNr">126 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L127" class="LineNr">127 </span><span class="Normal">case</span> <span class="Constant">0x31</span>: <span class="Delimiter">{</span>  <span class="Comment">// xor r32 with r/m32</span>
<span id="L128" class="LineNr">128 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L129" class="LineNr">129 </span>  <span class="Normal">uint8_t</span> arg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L130" class="LineNr">130 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;xor &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>arg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; with r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L131" class="LineNr">131 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L132" class="LineNr">132 </span>  <a href='010core.cc.html#L55'>BINARY_BITWISE_OP</a><span class="Delimiter">(</span>^<span class="Delimiter">,</span> *arg1<span class="Delimiter">,</span> Reg[arg2]<span class="Delimiter">.</span>u<span class="Delimiter">);</span>
<span id="L133" class="LineNr">133 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L134" class="LineNr">134 </span><span class="Delimiter">}</span>
<span id="L135" class="LineNr">135 </span>
<span id="L136" class="LineNr">136 </span><span class="SalientComment">//:: not</span>
<span id="L137" class="LineNr">137 </span>
<span id="L138" class="LineNr">138 </span><span class="Delimiter">:(scenario not_r32)</span>
<span id="L139" class="LineNr">139 </span><span class="Special">% Reg[3].i = 0x0f0f00ff;</span>
<span id="L140" class="LineNr">140 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L141" class="LineNr">141 </span>  f7  c3                                      <span class="Comment"># not EBX</span>
<span id="L142" class="LineNr">142 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 000 (unused) 011 (dest EBX)</span>
<span id="L143" class="LineNr">143 </span><span class="traceContains">+run: 'not' of r/m32</span>
<span id="L144" class="LineNr">144 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L145" class="LineNr">145 </span><span class="traceContains">+run: storing 0xf0f0ff00</span>
<span id="L146" class="LineNr">146 </span>
<span id="L147" class="LineNr">147 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L148" class="LineNr">148 </span><span class="Normal">case</span> <span class="Constant">0xf7</span>: <span class="Delimiter">{</span>  <span class="Comment">// xor r32 with r/m32</span>
<span id="L149" class="LineNr">149 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'not' of r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L151" class="LineNr">151 </span>  <span class="Normal">int32_t</span>* arg1 = <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>  *arg1 = ~<span class="Delimiter">(</span>*arg1<span class="Delimiter">);</span>
<span id="L153" class="LineNr">153 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; *arg1 &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L154" class="LineNr">154 </span>  SF = <span class="Delimiter">(</span>*arg1 &gt;&gt; <span class="Constant">31</span><span class="Delimiter">);</span>
<span id="L155" class="LineNr">155 </span>  ZF = <span class="Delimiter">(</span>*arg1 == <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L156" class="LineNr">156 </span>  <a href='010core.cc.html#L33'>OF</a> = <span class="Constant">false</span><span class="Delimiter">;</span>
<span id="L157" class="LineNr">157 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L158" class="LineNr">158 </span><span class="Delimiter">}</span>
<span id="L159" class="LineNr">159 </span>
<span id="L160" class="LineNr">160 </span><span class="SalientComment">//:: compare (cmp)</span>
<span id="L161" class="LineNr">161 </span>
<span id="L162" class="LineNr">162 </span><span class="Delimiter">:(scenario compare_r32_with_r32_greater)</span>
<span id="L163" class="LineNr">163 </span><span class="Special">% Reg[0].i = 0x0a0b0c0d;</span>
<span id="L164" class="LineNr">164 </span><span class="Special">% Reg[3].i = 0x0a0b0c07;</span>
<span id="L165" class="LineNr">165 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L166" class="LineNr">166 </span>  <span class="Constant">39</span>  d8                                      <span class="Comment"># compare EBX with EAX</span>
<span id="L167" class="LineNr">167 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L168" class="LineNr">168 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L169" class="LineNr">169 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L170" class="LineNr">170 </span><span class="traceContains">+run: SF=0; ZF=0; OF=0</span>
<span id="L171" class="LineNr">171 </span>
<span id="L172" class="LineNr">172 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L173" class="LineNr">173 </span><span class="Normal">case</span> <span class="Constant">0x39</span>: <span class="Delimiter">{</span>  <span class="Comment">// set SF if r/m32 &lt; r32</span>
<span id="L174" class="LineNr">174 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L175" class="LineNr">175 </span>  <span class="Normal">uint8_t</span> reg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L176" class="LineNr">176 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;compare &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; with r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L177" class="LineNr">177 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L178" class="LineNr">178 </span>  <span class="Normal">int32_t</span> arg2 = Reg[reg2]<span class="Delimiter">.</span>i<span class="Delimiter">;</span>
<span id="L179" class="LineNr">179 </span>  <span class="Normal">int32_t</span> tmp1 = *arg1 - arg2<span class="Delimiter">;</span>
<span id="L180" class="LineNr">180 </span>  SF = <span class="Delimiter">(</span>tmp1 &lt; <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L181" class="LineNr">181 </span>  ZF = <span class="Delimiter">(</span>tmp1 == <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L182" class="LineNr">182 </span>  <span class="Normal">int64_t</span> tmp2 = *arg1 - arg2<span class="Delimiter">;</span>
<span id="L183" class="LineNr">183 </span>  <a href='010core.cc.html#L33'>OF</a> = <span class="Delimiter">(</span>tmp1 != tmp2<span class="Delimiter">);</span>
<span id="L184" class="LineNr">184 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;SF=&quot;</span> &lt;&lt; SF &lt;&lt; <span class="Constant">&quot;; ZF=&quot;</span> &lt;&lt; ZF &lt;&lt; <span class="Constant">&quot;; OF=&quot;</span> &lt;&lt; <a href='010core.cc.html#L33'>OF</a> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L185" class="LineNr">185 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L186" class="LineNr">186 </span><span class="Delimiter">}</span>
<span id="L187" class="LineNr">187 </span>
<span id="L188" class="LineNr">188 </span><span class="Delimiter">:(scenario compare_r32_with_r32_lesser)</span>
<span id="L189" class="LineNr">189 </span><span class="Special">% Reg[0].i = 0x0a0b0c07;</span>
<span id="L190" class="LineNr">190 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L191" class="LineNr">191 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L192" class="LineNr">192 </span>  <span class="Constant">39</span>  d8                                      <span class="Comment"># compare EBX with EAX</span>
<span id="L193" class="LineNr">193 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L194" class="LineNr">194 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L195" class="LineNr">195 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L196" class="LineNr">196 </span><span class="traceContains">+run: SF=1; ZF=0; OF=0</span>
<span id="L197" class="LineNr">197 </span>
<span id="L198" class="LineNr">198 </span><span class="Delimiter">:(scenario compare_r32_with_r32_equal)</span>
<span id="L199" class="LineNr">199 </span><span class="Special">% Reg[0].i = 0x0a0b0c0d;</span>
<span id="L200" class="LineNr">200 </span><span class="Special">% Reg[3].i = 0x0a0b0c0d;</span>
<span id="L201" class="LineNr">201 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L202" class="LineNr">202 </span>  <span class="Constant">39</span>  d8                                      <span class="Comment"># compare EBX with EAX</span>
<span id="L203" class="LineNr">203 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L204" class="LineNr">204 </span><span class="traceContains">+run: compare <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L205" class="LineNr">205 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L206" class="LineNr">206 </span><span class="traceContains">+run: SF=0; ZF=1; OF=0</span>
<span id="L207" class="LineNr">207 </span>
<span id="L208" class="LineNr">208 </span><span class="SalientComment">//:: copy (mov)</span>
<span id="L209" class="LineNr">209 </span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">:(scenario copy_r32_to_r32)</span>
<span id="L211" class="LineNr">211 </span><span class="Special">% Reg[3].i = 0xaf;</span>
<span id="L212" class="LineNr">212 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L213" class="LineNr">213 </span>  <span class="Constant">89</span>  d8                                      <span class="Comment"># copy EBX to EAX</span>
<span id="L214" class="LineNr">214 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L215" class="LineNr">215 </span><span class="traceContains">+run: copy <a href='010core.cc.html#L10'>EBX</a> to r/m32</span>
<span id="L216" class="LineNr">216 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L217" class="LineNr">217 </span><span class="traceContains">+run: storing 0x000000af</span>
<span id="L218" class="LineNr">218 </span>
<span id="L219" class="LineNr">219 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L220" class="LineNr">220 </span><span class="Normal">case</span> <span class="Constant">0x89</span>: <span class="Delimiter">{</span>  <span class="Comment">// copy r32 to r/m32</span>
<span id="L221" class="LineNr">221 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L222" class="LineNr">222 </span>  <span class="Normal">uint8_t</span> reg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L223" class="LineNr">223 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;copy &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; to r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L224" class="LineNr">224 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L225" class="LineNr">225 </span>  *arg1 = Reg[reg2]<span class="Delimiter">.</span>i<span class="Delimiter">;</span>
<span id="L226" class="LineNr">226 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; *arg1 &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L227" class="LineNr">227 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L228" class="LineNr">228 </span><span class="Delimiter">}</span>
<span id="L229" class="LineNr">229 </span>
<span id="L230" class="LineNr">230 </span><span class="SalientComment">//:: xchg</span>
<span id="L231" class="LineNr">231 </span>
<span id="L232" class="LineNr">232 </span><span class="Delimiter">:(scenario xchg_r32_with_r32)</span>
<span id="L233" class="LineNr">233 </span><span class="Special">% Reg[3].i = 0xaf;</span>
<span id="L234" class="LineNr">234 </span><span class="Special">% Reg[0].i = 0x2e;</span>
<span id="L235" class="LineNr">235 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L236" class="LineNr">236 </span>  <span class="Constant">87</span>  d8                                      <span class="Comment"># exchange EBX with EAX</span>
<span id="L237" class="LineNr">237 </span><span class="Comment"># ModR/M in binary: 11 (direct mode) 011 (src EBX) 000 (dest EAX)</span>
<span id="L238" class="LineNr">238 </span><span class="traceContains">+run: exchange <a href='010core.cc.html#L10'>EBX</a> with r/m32</span>
<span id="L239" class="LineNr">239 </span><span class="traceContains">+run: r/m32 is <a href='010core.cc.html#L7'>EAX</a></span>
<span id="L240" class="LineNr">240 </span><span class="traceContains">+run: storing 0x000000af in r/m32</span>
<span id="L241" class="LineNr">241 </span><span class="traceContains">+run: storing 0x0000002e in <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L242" class="LineNr">242 </span>
<span id="L243" class="LineNr">243 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L244" class="LineNr">244 </span><span class="Normal">case</span> <span class="Constant">0x87</span>: <span class="Delimiter">{</span>  <span class="Comment">// exchange r32 with r/m32</span>
<span id="L245" class="LineNr">245 </span>  <span class="Normal">uint8_t</span> modrm = <a href='010core.cc.html#L214'>next</a><span class="Delimiter">();</span>
<span id="L246" class="LineNr">246 </span>  <span class="Normal">uint8_t</span> reg2 = <span class="Delimiter">(</span>modrm&gt;&gt;<span class="Constant">3</span><span class="Delimiter">)</span>&amp;<span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L247" class="LineNr">247 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;exchange &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg2<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; with r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L248" class="LineNr">248 </span>  <span class="Normal">int32_t</span>* arg1 = <a href='011direct_addressing.cc.html#L27'>effective_address</a><span class="Delimiter">(</span>modrm<span class="Delimiter">);</span>
<span id="L249" class="LineNr">249 </span>  <span class="Normal">int32_t</span> tmp = *arg1<span class="Delimiter">;</span>
<span id="L250" class="LineNr">250 </span>  *arg1 = Reg[reg2]<span class="Delimiter">.</span>i<span class="Delimiter">;</span>
<span id="L251" class="LineNr">251 </span>  Reg[reg2]<span class="Delimiter">.</span>i = tmp<span class="Delimiter">;</span>
<span id="L252" class="LineNr">252 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; *arg1 &lt;&lt; <span class="Constant">&quot; in r/m32&quot;</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L253" class="LineNr">253 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; Reg[reg2]<span class="Delimiter">.</span>i &lt;&lt; <span class="Constant">&quot; in &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span>reg2<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L254" class="LineNr">254 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L255" class="LineNr">255 </span><span class="Delimiter">}</span>
<span id="L256" class="LineNr">256 </span>
<span id="L257" class="LineNr">257 </span><span class="SalientComment">//:: push</span>
<span id="L258" class="LineNr">258 </span>
<span id="L259" class="LineNr">259 </span><span class="Delimiter">:(scenario push_r32)</span>
<span id="L260" class="LineNr">260 </span><span class="Special">% Reg[ESP].u = 0x64;</span>
<span id="L261" class="LineNr">261 </span><span class="Special">% Reg[EBX].i = 0x0000000a;</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">53</span>                                          <span class="Comment"># push EBX to stack</span>
<span id="L264" class="LineNr">264 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L283'>push</a> <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L265" class="LineNr">265 </span><span class="traceContains">+run: decrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000060</span>
<span id="L266" class="LineNr">266 </span><span class="traceContains">+run: pushing value 0x0000000a</span>
<span id="L267" class="LineNr">267 </span>
<span id="L268" class="LineNr">268 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L269" class="LineNr">269 </span><span class="Normal">case</span> <span class="Constant">0x50</span>:
<span id="L270" class="LineNr">270 </span><span class="Normal">case</span> <span class="Constant">0x51</span>:
<span id="L271" class="LineNr">271 </span><span class="Normal">case</span> <span class="Constant">0x52</span>:
<span id="L272" class="LineNr">272 </span><span class="Normal">case</span> <span class="Constant">0x53</span>:
<span id="L273" class="LineNr">273 </span><span class="Normal">case</span> <span class="Constant">0x54</span>:
<span id="L274" class="LineNr">274 </span><span class="Normal">case</span> <span class="Constant">0x55</span>:
<span id="L275" class="LineNr">275 </span><span class="Normal">case</span> <span class="Constant">0x56</span>:
<span id="L276" class="LineNr">276 </span><span class="Normal">case</span> <span class="Constant">0x57</span>: <span class="Delimiter">{</span>  <span class="Comment">// push r32 to stack</span>
<span id="L277" class="LineNr">277 </span>  <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op &amp; <span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L278" class="LineNr">278 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;push &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L279" class="LineNr">279 </span>  <a href='011direct_addressing.cc.html#L283'>push</a><span class="Delimiter">(</span>Reg[reg]<span class="Delimiter">.</span>u<span class="Delimiter">);</span>
<span id="L280" class="LineNr">280 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span><span class="Delimiter">}</span>
<span id="L282" class="LineNr">282 </span><span class="Delimiter">:(code)</span>
<span id="L283" class="LineNr">283 </span><span class="Normal">void</span> <a href='011direct_addressing.cc.html#L283'>push</a><span class="Delimiter">(</span><span class="Normal">uint32_t</span> val<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L284" class="LineNr">284 </span>  Reg[ESP]<span class="Delimiter">.</span>u -= <span class="Constant">4</span><span class="Delimiter">;</span>
<span id="L285" class="LineNr">285 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;decrementing <a href='010core.cc.html#L11'>ESP</a> to 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; Reg[ESP]<span class="Delimiter">.</span>u &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L286" class="LineNr">286 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;pushing value 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; val &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L287" class="LineNr">287 </span>  *<span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">uint32_t</span>*&gt;<span class="Delimiter">(</span>&amp;Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">))</span> = val<span class="Delimiter">;</span>
<span id="L288" class="LineNr">288 </span><span class="Delimiter">}</span>
<span id="L289" class="LineNr">289 </span>
<span id="L290" class="LineNr">290 </span><span class="SalientComment">//:: pop</span>
<span id="L291" class="LineNr">291 </span>
<span id="L292" class="LineNr">292 </span><span class="Delimiter">:(scenario pop_r32)</span>
<span id="L293" class="LineNr">293 </span><span class="Special">% Reg[ESP].u = 0x60;</span>
<span id="L294" class="LineNr">294 </span><span class="Special">% SET_WORD_IN_MEM(0x60, 0x0000000a);</span>
<span id="L295" class="LineNr">295 </span><span class="Comment"># op  ModR/M  SIB   displacement  immediate</span>
<span id="L296" class="LineNr">296 </span>  5b                                          <span class="Comment"># pop stack to EBX</span>
<span id="L297" class="LineNr">297 </span><span class="traceContains">+run: <a href='011direct_addressing.cc.html#L316'>pop</a> into <a href='010core.cc.html#L10'>EBX</a></span>
<span id="L298" class="LineNr">298 </span><span class="traceContains">+run: popping value 0x0000000a</span>
<span id="L299" class="LineNr">299 </span><span class="traceContains">+run: incrementing <a href='010core.cc.html#L11'>ESP</a> to 0x00000064</span>
<span id="L300" class="LineNr">300 </span>
<span id="L301" class="LineNr">301 </span><span class="Delimiter">:(before &quot;End Single-Byte Opcodes&quot;)</span>
<span id="L302" class="LineNr">302 </span><span class="Normal">case</span> <span class="Constant">0x58</span>:
<span id="L303" class="LineNr">303 </span><span class="Normal">case</span> <span class="Constant">0x59</span>:
<span id="L304" class="LineNr">304 </span><span class="Normal">case</span> <span class="Constant">0x5a</span>:
<span id="L305" class="LineNr">305 </span><span class="Normal">case</span> <span class="Constant">0x5b</span>:
<span id="L306" class="LineNr">306 </span><span class="Normal">case</span> <span class="Constant">0x5c</span>:
<span id="L307" class="LineNr">307 </span><span class="Normal">case</span> <span class="Constant">0x5d</span>:
<span id="L308" class="LineNr">308 </span><span class="Normal">case</span> <span class="Constant">0x5e</span>:
<span id="L309" class="LineNr">309 </span><span class="Normal">case</span> <span class="Constant">0x5f</span>: <span class="Delimiter">{</span>  <span class="Comment">// pop stack into r32</span>
<span id="L310" class="LineNr">310 </span>  <span class="Normal">uint8_t</span> <a href='010core.cc.html#L17'>reg</a> = op &amp; <span class="Constant">0x7</span><span class="Delimiter">;</span>
<span id="L311" class="LineNr">311 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;pop into &quot;</span> &lt;&lt; <a href='010core.cc.html#L227'>rname</a><span class="Delimiter">(</span><a href='010core.cc.html#L17'>reg</a><span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L312" class="LineNr">312 </span>  Reg[reg]<span class="Delimiter">.</span>u = <a href='011direct_addressing.cc.html#L316'>pop</a><span class="Delimiter">();</span>
<span id="L313" class="LineNr">313 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L314" class="LineNr">314 </span><span class="Delimiter">}</span>
<span id="L315" class="LineNr">315 </span><span class="Delimiter">:(code)</span>
<span id="L316" class="LineNr">316 </span><span class="Normal">uint32_t</span> <a href='011direct_addressing.cc.html#L316'>pop</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L317" class="LineNr">317 </span>  <span class="Normal">uint32_t</span> result = *<span class="Normal">reinterpret_cast</span>&lt;<span class="Normal">uint32_t</span>*&gt;<span class="Delimiter">(</span>&amp;Mem<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Reg[ESP]<span class="Delimiter">.</span>u<span class="Delimiter">));</span>
<span id="L318" class="LineNr">318 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;popping value 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; result &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L319" class="LineNr">319 </span>  Reg[ESP]<span class="Delimiter">.</span>u += <span class="Constant">4</span><span class="Delimiter">;</span>
<span id="L320" class="LineNr">320 </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">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;incrementing <a href='010core.cc.html#L11'>ESP</a> to 0x&quot;</span> &lt;&lt; <a href='010core.cc.html#L244'>HEXWORD</a> &lt;&lt; Reg[ESP]<span class="Delimiter">.</span>u &lt;&lt; <a href='003trace.cc.html#L184'>end</a><span class="Delimiter">();</span>
<span id="L321" class="LineNr">321 </span>  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L322" class="LineNr">322 </span><span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->