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
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
|
<!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 - 120allocate.subx</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal-dark">
<style type="text/css">
<!--
pre { font-family: monospace; color: #000000; background-color: #a8a8a8; }
body { font-size:12pt; font-family: monospace; color: #000000; background-color: #a8a8a8; }
a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.subxMinorFunction { color: #875f5f; }
.subxComment { color: #005faf; }
.subxS1Comment { color: #0000af; }
.subxS2Comment { color: #8a8a8a; }
.LineNr { }
.Constant { color: #008787; }
.subxTest { color: #5f8700; }
.SpecialChar { color: #d70000; }
.Normal { color: #000000; background-color: #a8a8a8; padding-bottom: 1px; }
.subxFunction { color: #af5f00; text-decoration: underline; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
var lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/main/120allocate.subx'>https://github.com/akkartik/mu/blob/main/120allocate.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Helper to dynamically allocate memory on the heap.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># We'd like to be able to write tests for functions that allocate memory,</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># making assertions on the precise addresses used. To achieve this we'll pass</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># in an *allocation descriptor* to allocate from.</span>
<span id="L6" class="LineNr"> 6 </span><span class="subxComment">#</span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># Allocation descriptors are also useful outside of tests. Assembly and machine</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># code are of necessity unsafe languages, and one of the most insidious kinds</span>
<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># of bugs unsafe languages expose us to are dangling pointers to memory that</span>
<span id="L10" class="LineNr"> 10 </span><span class="subxComment"># has been freed and potentially even reused for something totally different.</span>
<span id="L11" class="LineNr"> 11 </span><span class="subxComment"># To reduce the odds of such "use after free" errors, SubX programs tend to not</span>
<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># reclaim and reuse dynamically allocated memory. (Running out of memory is far</span>
<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># easier to debug.) Long-running programs that want to reuse memory are mostly</span>
<span id="L14" class="LineNr"> 14 </span><span class="subxComment"># on their own to be careful. However, they do get one bit of help: they can</span>
<span id="L15" class="LineNr"> 15 </span><span class="subxComment"># carve out chunks of memory and then allocate from them manually using this</span>
<span id="L16" class="LineNr"> 16 </span><span class="subxComment"># very same 'allocate' helper. They just need a new allocation descriptor for</span>
<span id="L17" class="LineNr"> 17 </span><span class="subxComment"># their book-keeping.</span>
<span id="L18" class="LineNr"> 18 </span>
<span id="L19" class="LineNr"> 19 </span>== data
<span id="L20" class="LineNr"> 20 </span>
<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># Allocations are returned in a handle, which consists of an alloc-id and a payload.</span>
<span id="L22" class="LineNr"> 22 </span><span class="subxComment"># The alloc-id helps detect use-after-free errors.</span>
<span id="L23" class="LineNr"> 23 </span><span class="SpecialChar">Handle-size</span>: <span class="subxComment"># (addr int)</span>
<span id="L24" class="LineNr"> 24 </span> 8/imm32
<span id="L25" class="LineNr"> 25 </span>
<span id="L26" class="LineNr"> 26 </span><span class="subxComment"># A default allocation descriptor for programs to use.</span>
<span id="L27" class="LineNr"> 27 </span><span class="SpecialChar">Heap</span>: <span class="subxComment"># allocation-descriptor</span>
<span id="L28" class="LineNr"> 28 </span> <span class="subxComment"># curr</span>
<span id="L29" class="LineNr"> 29 </span> 0x01000000/imm32 <span class="subxComment"># 16 MB</span>
<span id="L30" class="LineNr"> 30 </span> <span class="subxComment"># limit</span>
<span id="L31" class="LineNr"> 31 </span> 0x02000000/imm32 <span class="subxComment"># 32 MB</span>
<span id="L32" class="LineNr"> 32 </span>
<span id="L33" class="LineNr"> 33 </span><span class="SpecialChar">Next-alloc-id</span>: <span class="subxComment"># int</span>
<span id="L34" class="LineNr"> 34 </span> 0x100/imm32 <span class="subxComment"># save a few alloc ids for fake handles</span>
<span id="L35" class="LineNr"> 35 </span>
<span id="L36" class="LineNr"> 36 </span>== code
<span id="L37" class="LineNr"> 37 </span><span class="subxComment"># instruction effective address register displacement immediate</span>
<span id="L38" class="LineNr"> 38 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span>
<span id="L39" class="LineNr"> 39 </span><span class="subxS1Comment"># . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span>
<span id="L40" class="LineNr"> 40 </span>
<span id="L41" class="LineNr"> 41 </span><span class="subxComment"># Allocate and clear 'n' bytes of memory from an allocation-descriptor 'ad'.</span>
<span id="L42" class="LineNr"> 42 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L43" class="LineNr"> 43 </span><span class="subxFunction">allocate</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L44" class="LineNr"> 44 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L45" class="LineNr"> 45 </span> 55/push-ebp
<span id="L46" class="LineNr"> 46 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L47" class="LineNr"> 47 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L48" class="LineNr"> 48 </span> 50/push-eax
<span id="L49" class="LineNr"> 49 </span> <span class="subxComment"># allocate-raw(ad, n, out)</span>
<span id="L50" class="LineNr"> 50 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L51" class="LineNr"> 51 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+16)</span>
<span id="L52" class="LineNr"> 52 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span>
<span id="L53" class="LineNr"> 53 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L54" class="LineNr"> 54 </span> <span class="subxS2Comment"># . . call</span>
<span id="L55" class="LineNr"> 55 </span> e8/call <a href='120allocate.subx.html#L80'>allocate-raw</a>/disp32
<span id="L56" class="LineNr"> 56 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L57" class="LineNr"> 57 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L58" class="LineNr"> 58 </span> <span class="subxComment"># eax = out->payload + 4</span>
<span id="L59" class="LineNr"> 59 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L60" class="LineNr"> 60 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(eax+4) to eax</span>
<span id="L61" class="LineNr"> 61 </span> 05/add-to-eax 4/imm32
<span id="L62" class="LineNr"> 62 </span> <span class="subxComment"># zero-out(eax, n)</span>
<span id="L63" class="LineNr"> 63 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L64" class="LineNr"> 64 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span>
<span id="L65" class="LineNr"> 65 </span> 50/push-eax
<span id="L66" class="LineNr"> 66 </span> <span class="subxS2Comment"># . . call</span>
<span id="L67" class="LineNr"> 67 </span> e8/call <a href='120allocate.subx.html#L836'>zero-out</a>/disp32
<span id="L68" class="LineNr"> 68 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L69" class="LineNr"> 69 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L70" class="LineNr"> 70 </span><span class="Constant">$allocate:end</span>:
<span id="L71" class="LineNr"> 71 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L72" class="LineNr"> 72 </span> 58/pop-to-eax
<span id="L73" class="LineNr"> 73 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L74" class="LineNr"> 74 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L75" class="LineNr"> 75 </span> 5d/pop-to-ebp
<span id="L76" class="LineNr"> 76 </span> c3/return
<span id="L77" class="LineNr"> 77 </span>
<span id="L78" class="LineNr"> 78 </span><span class="subxComment"># Claim the next 'n' bytes of memory starting at ad->curr and update ad->curr.</span>
<span id="L79" class="LineNr"> 79 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L80" class="LineNr"> 80 </span><span class="subxFunction">allocate-raw</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L81" class="LineNr"> 81 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L82" class="LineNr"> 82 </span> 55/push-ebp
<span id="L83" class="LineNr"> 83 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L84" class="LineNr"> 84 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L85" class="LineNr"> 85 </span> 50/push-eax
<span id="L86" class="LineNr"> 86 </span> 51/push-ecx
<span id="L87" class="LineNr"> 87 </span> 52/push-edx
<span id="L88" class="LineNr"> 88 </span> 53/push-ebx
<span id="L89" class="LineNr"> 89 </span> 56/push-esi
<span id="L90" class="LineNr"> 90 </span> 57/push-edi
<span id="L91" class="LineNr"> 91 </span> <span class="subxComment"># ecx = ad</span>
<span id="L92" class="LineNr"> 92 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L93" class="LineNr"> 93 </span> <span class="subxComment"># edx = out</span>
<span id="L94" class="LineNr"> 94 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to edx</span>
<span id="L95" class="LineNr"> 95 </span> <span class="subxComment"># ebx = n</span>
<span id="L96" class="LineNr"> 96 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ebx</span>
<span id="L97" class="LineNr"> 97 </span> <span class="subxComment"># out->alloc-id = Next-alloc-id</span>
<span id="L98" class="LineNr"> 98 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy *Next-alloc-id to eax</span>
<span id="L99" class="LineNr"> 99 </span> 89/copy 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy eax to *edx</span>
<span id="L100" class="LineNr">100 </span> <span class="subxComment"># out->payload = ad->curr</span>
<span id="L101" class="LineNr">101 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to eax</span>
<span id="L102" class="LineNr">102 </span><span class="Constant">$allocate-raw:save-payload-in-eax</span>:
<span id="L103" class="LineNr">103 </span> 89/copy 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax to *(edx+4)</span>
<span id="L104" class="LineNr">104 </span> <span class="subxComment"># *out->payload = Next-alloc-id</span>
<span id="L105" class="LineNr">105 </span> 8b/copy 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(edx+4) to edi</span>
<span id="L106" class="LineNr">106 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy *Next-alloc-id to esi</span>
<span id="L107" class="LineNr">107 </span> 89/copy 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esi to *edi</span>
<span id="L108" class="LineNr">108 </span><span class="Constant">$allocate-raw:increment-next-alloc-id</span>:
<span id="L109" class="LineNr">109 </span> <span class="subxComment"># increment *Next-alloc-id</span>
<span id="L110" class="LineNr">110 </span> ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># increment *Next-alloc-id</span>
<span id="L111" class="LineNr">111 </span> <span class="subxComment"># check if there's enough space</span>
<span id="L112" class="LineNr">112 </span> <span class="subxComment"># TODO: move this check up before any state updates when we support error recovery</span>
<span id="L113" class="LineNr">113 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 3/index/ebx <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+ebx+4 to eax</span>
<span id="L114" class="LineNr">114 </span> 3b/compare 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare eax with *(ecx+4)</span>
<span id="L115" class="LineNr">115 </span> 73/jump-if->=-signed $allocate-raw:<a href='501draw-text.mu.html#L481'>abort</a>/disp8
<span id="L116" class="LineNr">116 </span><span class="Constant">$allocate-raw:commit</span>:
<span id="L117" class="LineNr">117 </span> <span class="subxComment"># ad->curr += n+4</span>
<span id="L118" class="LineNr">118 </span> 89/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy eax to *ecx</span>
<span id="L119" class="LineNr">119 </span><span class="Constant">$allocate-raw:end</span>:
<span id="L120" class="LineNr">120 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L121" class="LineNr">121 </span> 5f/pop-to-edi
<span id="L122" class="LineNr">122 </span> 5e/pop-to-esi
<span id="L123" class="LineNr">123 </span> 5b/pop-to-ebx
<span id="L124" class="LineNr">124 </span> 5a/pop-to-edx
<span id="L125" class="LineNr">125 </span> 59/pop-to-ecx
<span id="L126" class="LineNr">126 </span> 58/pop-to-eax
<span id="L127" class="LineNr">127 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L128" class="LineNr">128 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L129" class="LineNr">129 </span> 5d/pop-to-ebp
<span id="L130" class="LineNr">130 </span> c3/return
<span id="L131" class="LineNr">131 </span>
<span id="L132" class="LineNr">132 </span><span class="Constant">$allocate-raw:<a href='501draw-text.mu.html#L481'>abort</a></span>:
<span id="L133" class="LineNr">133 </span> (<a href='501draw-text.mu.html#L258'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> 0 <span class="Constant">"allocate: failed"</span> 3 0) <span class="subxComment"># 3=cyan</span>
<span id="L134" class="LineNr">134 </span> {
<span id="L135" class="LineNr">135 </span> eb/jump <span class="Constant">loop</span>/disp8
<span id="L136" class="LineNr">136 </span> }
<span id="L137" class="LineNr">137 </span> <span class="subxComment"># never gets here</span>
<span id="L138" class="LineNr">138 </span>
<span id="L139" class="LineNr">139 </span><span class="subxTest">test-allocate-raw-success</span>:
<span id="L140" class="LineNr">140 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L141" class="LineNr">141 </span> 55/push-ebp
<span id="L142" class="LineNr">142 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L143" class="LineNr">143 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor containing 16 bytes</span>
<span id="L144" class="LineNr">144 </span> <span class="subxS1Comment"># . var end/ecx: (addr byte)</span>
<span id="L145" class="LineNr">145 </span> 89/<- %ecx 4/r32/esp
<span id="L146" class="LineNr">146 </span> <span class="subxS1Comment"># . var start/edx: (addr byte) = end - 16</span>
<span id="L147" class="LineNr">147 </span> 81 5/subop/subtract %esp 0x10/imm32
<span id="L148" class="LineNr">148 </span> 89/<- %edx 4/r32/esp
<span id="L149" class="LineNr">149 </span> <span class="subxS1Comment"># . ad = {start, end}</span>
<span id="L150" class="LineNr">150 </span> 51/push-ecx
<span id="L151" class="LineNr">151 </span> 52/push-edx
<span id="L152" class="LineNr">152 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L153" class="LineNr">153 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L154" class="LineNr">154 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L155" class="LineNr">155 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L156" class="LineNr">156 </span> 68/push 0/imm32
<span id="L157" class="LineNr">157 </span> 68/push 0/imm32
<span id="L158" class="LineNr">158 </span> 89/copy 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to edx</span>
<span id="L159" class="LineNr">159 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L160" class="LineNr">160 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L161" class="LineNr">161 </span> <span class="subxComment"># allocate-raw(ad, 3, h)</span>
<span id="L162" class="LineNr">162 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L163" class="LineNr">163 </span> 52/push-edx
<span id="L164" class="LineNr">164 </span> 68/push 3/imm32
<span id="L165" class="LineNr">165 </span> 51/push-ecx
<span id="L166" class="LineNr">166 </span> <span class="subxS2Comment"># . . call</span>
<span id="L167" class="LineNr">167 </span> e8/call <a href='120allocate.subx.html#L80'>allocate-raw</a>/disp32
<span id="L168" class="LineNr">168 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L169" class="LineNr">169 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L170" class="LineNr">170 </span> <span class="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L171" class="LineNr">171 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L172" class="LineNr">172 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L139'>test-allocate-raw-success</a>: sets alloc-id in handle"</span>/imm32
<span id="L173" class="LineNr">173 </span> 68/push 0x34/imm32
<span id="L174" class="LineNr">174 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *edx</span>
<span id="L175" class="LineNr">175 </span> <span class="subxS2Comment"># . . call</span>
<span id="L176" class="LineNr">176 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L177" class="LineNr">177 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L178" class="LineNr">178 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L179" class="LineNr">179 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L180" class="LineNr">180 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L181" class="LineNr">181 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L139'>test-allocate-raw-success</a>: sets payload in handle"</span>/imm32
<span id="L182" class="LineNr">182 </span> 53/push-ebx
<span id="L183" class="LineNr">183 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(edx+4)</span>
<span id="L184" class="LineNr">184 </span> <span class="subxS2Comment"># . . call</span>
<span id="L185" class="LineNr">185 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L186" class="LineNr">186 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L187" class="LineNr">187 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L188" class="LineNr">188 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L189" class="LineNr">189 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L190" class="LineNr">190 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L139'>test-allocate-raw-success</a>: sets alloc-id in payload"</span>/imm32
<span id="L191" class="LineNr">191 </span> 68/push 0x34/imm32
<span id="L192" class="LineNr">192 </span> ff 6/subop/push 0/mod/indirect 3/rm32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ebx</span>
<span id="L193" class="LineNr">193 </span> <span class="subxS2Comment"># . . call</span>
<span id="L194" class="LineNr">194 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L195" class="LineNr">195 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L196" class="LineNr">196 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L197" class="LineNr">197 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L198" class="LineNr">198 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L199" class="LineNr">199 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L139'>test-allocate-raw-success</a>: increments Next-alloc-id"</span>/imm32
<span id="L200" class="LineNr">200 </span> 68/push 0x35/imm32
<span id="L201" class="LineNr">201 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L202" class="LineNr">202 </span> <span class="subxS2Comment"># . . call</span>
<span id="L203" class="LineNr">203 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L204" class="LineNr">204 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L205" class="LineNr">205 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L206" class="LineNr">206 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 3 + 4 for alloc-id, msg)</span>
<span id="L207" class="LineNr">207 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L208" class="LineNr">208 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L139'>test-allocate-raw-success</a>: updates allocation descriptor"</span>/imm32
<span id="L209" class="LineNr">209 </span> 68/push 7/imm32
<span id="L210" class="LineNr">210 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to eax</span>
<span id="L211" class="LineNr">211 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L212" class="LineNr">212 </span> 50/push-eax
<span id="L213" class="LineNr">213 </span> <span class="subxS2Comment"># . . call</span>
<span id="L214" class="LineNr">214 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L215" class="LineNr">215 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L216" class="LineNr">216 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L217" class="LineNr">217 </span> <span class="subxComment"># clean up</span>
<span id="L218" class="LineNr">218 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L219" class="LineNr">219 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L220" class="LineNr">220 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x20/imm32 <span class="subxComment"># add to esp</span>
<span id="L221" class="LineNr">221 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L222" class="LineNr">222 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L223" class="LineNr">223 </span> 5d/pop-to-ebp
<span id="L224" class="LineNr">224 </span> c3/return
<span id="L225" class="LineNr">225 </span>
<span id="L226" class="LineNr">226 </span><span class="subxFunction">lookup</span>: <span class="subxComment"># h: (handle _T) -> result/eax: (addr _T)</span>
<span id="L227" class="LineNr">227 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L228" class="LineNr">228 </span> 55/push-ebp
<span id="L229" class="LineNr">229 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L230" class="LineNr">230 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L231" class="LineNr">231 </span> 51/push-ecx
<span id="L232" class="LineNr">232 </span> <span class="subxComment"># eax = 0</span>
<span id="L233" class="LineNr">233 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span>
<span id="L234" class="LineNr">234 </span> <span class="subxComment"># ecx = handle->alloc_id</span>
<span id="L235" class="LineNr">235 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L236" class="LineNr">236 </span> <span class="subxComment"># if (ecx == 0) return 0</span>
<span id="L237" class="LineNr">237 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare ecx</span>
<span id="L238" class="LineNr">238 </span> 74/jump-if-= $lookup:end/disp8
<span id="L239" class="LineNr">239 </span> <span class="subxComment"># eax = handle->address (payload)</span>
<span id="L240" class="LineNr">240 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to eax</span>
<span id="L241" class="LineNr">241 </span> <span class="subxComment"># if (ecx != *eax) abort</span>
<span id="L242" class="LineNr">242 </span> 39/compare 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare *eax and ecx</span>
<span id="L243" class="LineNr">243 </span> 75/jump-if-!= $lookup:<a href='501draw-text.mu.html#L481'>abort</a>/disp8
<span id="L244" class="LineNr">244 </span> <span class="subxComment"># add 4 to eax</span>
<span id="L245" class="LineNr">245 </span> 05/add-to-eax 4/imm32
<span id="L246" class="LineNr">246 </span><span class="Constant">$lookup:end</span>:
<span id="L247" class="LineNr">247 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L248" class="LineNr">248 </span> 59/pop-to-ecx
<span id="L249" class="LineNr">249 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L250" class="LineNr">250 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L251" class="LineNr">251 </span> 5d/pop-to-ebp
<span id="L252" class="LineNr">252 </span> c3/return
<span id="L253" class="LineNr">253 </span>
<span id="L254" class="LineNr">254 </span><span class="Constant">$lookup:<a href='501draw-text.mu.html#L481'>abort</a></span>:
<span id="L255" class="LineNr">255 </span> (<a href='501draw-text.mu.html#L258'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> 0 <span class="Constant">"lookup: failed"</span> 3 0) <span class="subxComment"># 3=cyan</span>
<span id="L256" class="LineNr">256 </span> {
<span id="L257" class="LineNr">257 </span> eb/jump <span class="Constant">loop</span>/disp8
<span id="L258" class="LineNr">258 </span> }
<span id="L259" class="LineNr">259 </span> <span class="subxComment"># never gets here</span>
<span id="L260" class="LineNr">260 </span>
<span id="L261" class="LineNr">261 </span><span class="subxTest">test-lookup-success</span>:
<span id="L262" class="LineNr">262 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L263" class="LineNr">263 </span> 55/push-ebp
<span id="L264" class="LineNr">264 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L265" class="LineNr">265 </span> <span class="subxComment"># var ad/ebx: allocation-descriptor containing 16 bytes</span>
<span id="L266" class="LineNr">266 </span> <span class="subxS1Comment"># . var end/ecx: (addr byte)</span>
<span id="L267" class="LineNr">267 </span> 89/<- %ecx 4/r32/esp
<span id="L268" class="LineNr">268 </span> <span class="subxS1Comment"># . var start/edx: (addr byte) = end - 16</span>
<span id="L269" class="LineNr">269 </span> 81 5/subop/subtract %esp 0x10/imm32
<span id="L270" class="LineNr">270 </span> 89/<- %edx 4/r32/esp
<span id="L271" class="LineNr">271 </span> <span class="subxS1Comment"># . ad = {start, end}</span>
<span id="L272" class="LineNr">272 </span> 51/push-ecx
<span id="L273" class="LineNr">273 </span> 52/push-edx
<span id="L274" class="LineNr">274 </span> 89/copy 3/mod/direct 3/rm32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebx</span>
<span id="L275" class="LineNr">275 </span> <span class="subxComment"># var handle/ecx: handle</span>
<span id="L276" class="LineNr">276 </span> 68/push 0/imm32/address
<span id="L277" class="LineNr">277 </span> 68/push 0/imm32/alloc-id
<span id="L278" class="LineNr">278 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L279" class="LineNr">279 </span> <span class="subxComment"># var old-top/edx = ad->curr</span>
<span id="L280" class="LineNr">280 </span> 8b/copy 0/mod/indirect 3/rm32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ebx to edx</span>
<span id="L281" class="LineNr">281 </span> <span class="subxComment"># allocate-raw(ad, 2, handle)</span>
<span id="L282" class="LineNr">282 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L283" class="LineNr">283 </span> 51/push-ecx
<span id="L284" class="LineNr">284 </span> 68/push 2/imm32/size
<span id="L285" class="LineNr">285 </span> 53/push-ebx
<span id="L286" class="LineNr">286 </span> <span class="subxS2Comment"># . . call</span>
<span id="L287" class="LineNr">287 </span> e8/call <a href='120allocate.subx.html#L80'>allocate-raw</a>/disp32
<span id="L288" class="LineNr">288 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L289" class="LineNr">289 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L290" class="LineNr">290 </span> <span class="subxComment"># eax = lookup(handle)</span>
<span id="L291" class="LineNr">291 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L292" class="LineNr">292 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ecx+4)</span>
<span id="L293" class="LineNr">293 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ecx</span>
<span id="L294" class="LineNr">294 </span> <span class="subxS2Comment"># . . call</span>
<span id="L295" class="LineNr">295 </span> e8/call <a href='120allocate.subx.html#L226'>lookup</a>/disp32
<span id="L296" class="LineNr">296 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L297" class="LineNr">297 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L298" class="LineNr">298 </span> <span class="subxComment"># eax contains old top of heap, except skipping the alloc-id in the payload</span>
<span id="L299" class="LineNr">299 </span> <span class="subxS1Comment"># . check-ints-equal(eax, old-top+4, msg)</span>
<span id="L300" class="LineNr">300 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L301" class="LineNr">301 </span> 68/push <span class="Constant">"F - test-lookup-success"</span>/imm32
<span id="L302" class="LineNr">302 </span> 81 0/subop/add 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to edx</span>
<span id="L303" class="LineNr">303 </span> 52/push-edx
<span id="L304" class="LineNr">304 </span> 50/push-eax
<span id="L305" class="LineNr">305 </span> <span class="subxS2Comment"># . . call</span>
<span id="L306" class="LineNr">306 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L307" class="LineNr">307 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L308" class="LineNr">308 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L309" class="LineNr">309 </span> <span class="subxComment"># clean up</span>
<span id="L310" class="LineNr">310 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L311" class="LineNr">311 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L312" class="LineNr">312 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x20/imm32 <span class="subxComment"># add to esp</span>
<span id="L313" class="LineNr">313 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L314" class="LineNr">314 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L315" class="LineNr">315 </span> 5d/pop-to-ebp
<span id="L316" class="LineNr">316 </span> c3/return
<span id="L317" class="LineNr">317 </span>
<span id="L318" class="LineNr">318 </span><span class="subxTest">test-lookup-null-returns-null</span>:
<span id="L319" class="LineNr">319 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L320" class="LineNr">320 </span> 55/push-ebp
<span id="L321" class="LineNr">321 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L322" class="LineNr">322 </span> <span class="subxComment"># var handle/ecx: handle</span>
<span id="L323" class="LineNr">323 </span> 68/push 0/imm32/address
<span id="L324" class="LineNr">324 </span> 68/push 0/imm32/alloc-id
<span id="L325" class="LineNr">325 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L326" class="LineNr">326 </span> <span class="subxComment"># eax = lookup(handle)</span>
<span id="L327" class="LineNr">327 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L328" class="LineNr">328 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ecx+4)</span>
<span id="L329" class="LineNr">329 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ecx</span>
<span id="L330" class="LineNr">330 </span> <span class="subxS2Comment"># . . call</span>
<span id="L331" class="LineNr">331 </span> e8/call <a href='120allocate.subx.html#L226'>lookup</a>/disp32
<span id="L332" class="LineNr">332 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L333" class="LineNr">333 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L334" class="LineNr">334 </span> <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
<span id="L335" class="LineNr">335 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L336" class="LineNr">336 </span> 68/push <span class="Constant">"F - test-lookup-null-returns-null"</span>/imm32
<span id="L337" class="LineNr">337 </span> 68/push 0/imm32
<span id="L338" class="LineNr">338 </span> 50/push-eax
<span id="L339" class="LineNr">339 </span> <span class="subxS2Comment"># . . call</span>
<span id="L340" class="LineNr">340 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L341" class="LineNr">341 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L342" class="LineNr">342 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L343" class="LineNr">343 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L344" class="LineNr">344 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L345" class="LineNr">345 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L346" class="LineNr">346 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L347" class="LineNr">347 </span> 5d/pop-to-ebp
<span id="L348" class="LineNr">348 </span> c3/return
<span id="L349" class="LineNr">349 </span>
<span id="L350" class="LineNr">350 </span><span class="subxMinorFunction">_pending-test-lookup-failure</span>:
<span id="L351" class="LineNr">351 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L352" class="LineNr">352 </span> 55/push-ebp
<span id="L353" class="LineNr">353 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L354" class="LineNr">354 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor containing 16 bytes</span>
<span id="L355" class="LineNr">355 </span> <span class="subxS1Comment"># . var end/ecx: (addr byte)</span>
<span id="L356" class="LineNr">356 </span> 89/<- %ecx 4/r32/esp
<span id="L357" class="LineNr">357 </span> <span class="subxS1Comment"># . var start/edx: (addr byte) = end - 16</span>
<span id="L358" class="LineNr">358 </span> 81 5/subop/subtract %esp 0x10/imm32
<span id="L359" class="LineNr">359 </span> 89/<- %edx 4/r32/esp
<span id="L360" class="LineNr">360 </span> <span class="subxS1Comment"># . ad = {start, end}</span>
<span id="L361" class="LineNr">361 </span> 51/push-ecx
<span id="L362" class="LineNr">362 </span> 52/push-edx
<span id="L363" class="LineNr">363 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L364" class="LineNr">364 </span> <span class="subxComment"># var h1/ecx: handle</span>
<span id="L365" class="LineNr">365 </span> 68/push 0/imm32/address
<span id="L366" class="LineNr">366 </span> 68/push 0/imm32/alloc-id
<span id="L367" class="LineNr">367 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L368" class="LineNr">368 </span> <span class="subxComment"># var old_top/ebx = ad->curr</span>
<span id="L369" class="LineNr">369 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ebx</span>
<span id="L370" class="LineNr">370 </span> <span class="subxComment"># first allocation, to h1</span>
<span id="L371" class="LineNr">371 </span> <span class="subxS1Comment"># . allocate(ad, 2, h1)</span>
<span id="L372" class="LineNr">372 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L373" class="LineNr">373 </span> 51/push-ecx
<span id="L374" class="LineNr">374 </span> 68/push 2/imm32/size
<span id="L375" class="LineNr">375 </span> 56/push-esi
<span id="L376" class="LineNr">376 </span> <span class="subxS2Comment"># . . call</span>
<span id="L377" class="LineNr">377 </span> e8/call <a href='120allocate.subx.html#L43'>allocate</a>/disp32
<span id="L378" class="LineNr">378 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L379" class="LineNr">379 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L380" class="LineNr">380 </span> <span class="subxComment"># reset ad->curr to mimic reclamation</span>
<span id="L381" class="LineNr">381 </span> 89/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebx to *esi</span>
<span id="L382" class="LineNr">382 </span> <span class="subxComment"># second allocation that returns the same address as the first</span>
<span id="L383" class="LineNr">383 </span> <span class="subxComment"># var h2/edx: handle</span>
<span id="L384" class="LineNr">384 </span> 68/push 0/imm32/address
<span id="L385" class="LineNr">385 </span> 68/push 0/imm32/alloc-id
<span id="L386" class="LineNr">386 </span> 89/copy 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to edx</span>
<span id="L387" class="LineNr">387 </span> <span class="subxS1Comment"># . allocate(ad, 2, h2)</span>
<span id="L388" class="LineNr">388 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L389" class="LineNr">389 </span> 52/push-edx
<span id="L390" class="LineNr">390 </span> 68/push 2/imm32/size
<span id="L391" class="LineNr">391 </span> 56/push-esi
<span id="L392" class="LineNr">392 </span> <span class="subxS2Comment"># . . call</span>
<span id="L393" class="LineNr">393 </span> e8/call <a href='120allocate.subx.html#L43'>allocate</a>/disp32
<span id="L394" class="LineNr">394 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L395" class="LineNr">395 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L396" class="LineNr">396 </span> <span class="subxComment"># check-ints-equal(h1->address, h2->address, msg)</span>
<span id="L397" class="LineNr">397 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L398" class="LineNr">398 </span> 68/push <span class="Constant">"F - test-lookup-failure"</span>/imm32
<span id="L399" class="LineNr">399 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(edx+4)</span>
<span id="L400" class="LineNr">400 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ecx+4)</span>
<span id="L401" class="LineNr">401 </span> <span class="subxS2Comment"># . . call</span>
<span id="L402" class="LineNr">402 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L403" class="LineNr">403 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L404" class="LineNr">404 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L405" class="LineNr">405 </span> <span class="subxComment"># lookup(h1) should crash</span>
<span id="L406" class="LineNr">406 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L407" class="LineNr">407 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ecx+4)</span>
<span id="L408" class="LineNr">408 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ecx</span>
<span id="L409" class="LineNr">409 </span> <span class="subxS2Comment"># . . call</span>
<span id="L410" class="LineNr">410 </span> e8/call <a href='120allocate.subx.html#L226'>lookup</a>/disp32
<span id="L411" class="LineNr">411 </span> <span class="subxComment"># should never get past this point</span>
<span id="L412" class="LineNr">412 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L413" class="LineNr">413 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L414" class="LineNr">414 </span> <span class="subxComment"># clean up</span>
<span id="L415" class="LineNr">415 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L416" class="LineNr">416 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L417" class="LineNr">417 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x20/imm32 <span class="subxComment"># add to esp</span>
<span id="L418" class="LineNr">418 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L419" class="LineNr">419 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L420" class="LineNr">420 </span> 5d/pop-to-ebp
<span id="L421" class="LineNr">421 </span> c3/return
<span id="L422" class="LineNr">422 </span>
<span id="L423" class="LineNr">423 </span><span class="subxComment"># when comparing handles, just treat them as pure values</span>
<span id="L424" class="LineNr">424 </span><span class="subxFunction">handle-equal?</span>: <span class="subxComment"># a: (handle _T), b: (handle _T) -> result/eax: boolean</span>
<span id="L425" class="LineNr">425 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L426" class="LineNr">426 </span> 55/push-ebp
<span id="L427" class="LineNr">427 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L428" class="LineNr">428 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L429" class="LineNr">429 </span> 51/push-ecx
<span id="L430" class="LineNr">430 </span> <span class="subxComment"># eax = false</span>
<span id="L431" class="LineNr">431 </span> b8/copy-to-eax 0/imm32/false
<span id="L432" class="LineNr">432 </span><span class="Constant">$handle-equal?:compare-alloc-id</span>:
<span id="L433" class="LineNr">433 </span> <span class="subxComment"># ecx = a->alloc_id</span>
<span id="L434" class="LineNr">434 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L435" class="LineNr">435 </span> <span class="subxComment"># if (ecx != b->alloc_id) return false</span>
<span id="L436" class="LineNr">436 </span> 39/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx and *(ebp+16)</span>
<span id="L437" class="LineNr">437 </span> 75/jump-if-!= $handle-equal?:end/disp8
<span id="L438" class="LineNr">438 </span><span class="Constant">$handle-equal?:compare-address</span>:
<span id="L439" class="LineNr">439 </span> <span class="subxComment"># ecx = handle->address</span>
<span id="L440" class="LineNr">440 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ecx</span>
<span id="L441" class="LineNr">441 </span> <span class="subxComment"># if (ecx != b->address) return false</span>
<span id="L442" class="LineNr">442 </span> 39/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x14/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx and *(ebp+20)</span>
<span id="L443" class="LineNr">443 </span> 75/jump-if-!= $handle-equal?:end/disp8
<span id="L444" class="LineNr">444 </span><span class="Constant">$handle-equal?:return-true</span>:
<span id="L445" class="LineNr">445 </span> <span class="subxComment"># return true</span>
<span id="L446" class="LineNr">446 </span> b8/copy-to-eax 1/imm32/true
<span id="L447" class="LineNr">447 </span><span class="Constant">$handle-equal?:end</span>:
<span id="L448" class="LineNr">448 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L449" class="LineNr">449 </span> 59/pop-to-ecx
<span id="L450" class="LineNr">450 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L451" class="LineNr">451 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L452" class="LineNr">452 </span> 5d/pop-to-ebp
<span id="L453" class="LineNr">453 </span> c3/return
<span id="L454" class="LineNr">454 </span>
<span id="L455" class="LineNr">455 </span><span class="subxFunction">copy-handle</span>: <span class="subxComment"># src: (handle _T), dest: (addr handle _T)</span>
<span id="L456" class="LineNr">456 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L457" class="LineNr">457 </span> 55/push-ebp
<span id="L458" class="LineNr">458 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L459" class="LineNr">459 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L460" class="LineNr">460 </span> 50/push-eax
<span id="L461" class="LineNr">461 </span> 51/push-ecx
<span id="L462" class="LineNr">462 </span> <span class="subxComment"># ecx = dest</span>
<span id="L463" class="LineNr">463 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to ecx</span>
<span id="L464" class="LineNr">464 </span> <span class="subxComment"># *dest = src</span>
<span id="L465" class="LineNr">465 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to eax</span>
<span id="L466" class="LineNr">466 </span> 89/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy eax to *ecx</span>
<span id="L467" class="LineNr">467 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to eax</span>
<span id="L468" class="LineNr">468 </span> 89/copy 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax to *(ecx+4)</span>
<span id="L469" class="LineNr">469 </span><span class="Constant">$copy-handle:end</span>:
<span id="L470" class="LineNr">470 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L471" class="LineNr">471 </span> 59/pop-to-ecx
<span id="L472" class="LineNr">472 </span> 58/pop-to-eax
<span id="L473" class="LineNr">473 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L474" class="LineNr">474 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L475" class="LineNr">475 </span> 5d/pop-to-ebp
<span id="L476" class="LineNr">476 </span> c3/return
<span id="L477" class="LineNr">477 </span>
<span id="L478" class="LineNr">478 </span><span class="subxComment"># helper: create a nested allocation descriptor (useful for tests)</span>
<span id="L479" class="LineNr">479 </span><span class="subxFunction">allocate-region</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle allocation-descriptor)</span>
<span id="L480" class="LineNr">480 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L481" class="LineNr">481 </span> 55/push-ebp
<span id="L482" class="LineNr">482 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L483" class="LineNr">483 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L484" class="LineNr">484 </span> 50/push-eax
<span id="L485" class="LineNr">485 </span> 51/push-ecx
<span id="L486" class="LineNr">486 </span> <span class="subxComment"># allocate(ad, n, out)</span>
<span id="L487" class="LineNr">487 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L488" class="LineNr">488 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+16)</span>
<span id="L489" class="LineNr">489 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span>
<span id="L490" class="LineNr">490 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L491" class="LineNr">491 </span> <span class="subxS2Comment"># . . call</span>
<span id="L492" class="LineNr">492 </span> e8/call <a href='120allocate.subx.html#L43'>allocate</a>/disp32
<span id="L493" class="LineNr">493 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L494" class="LineNr">494 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L495" class="LineNr">495 </span> <span class="subxComment"># eax = out->payload</span>
<span id="L496" class="LineNr">496 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L497" class="LineNr">497 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(eax+4) to eax</span>
<span id="L498" class="LineNr">498 </span> <span class="subxComment"># skip payload->allocid</span>
<span id="L499" class="LineNr">499 </span> 05/add-to-eax 4/imm32
<span id="L500" class="LineNr">500 </span> <span class="subxComment"># if (eax == 0) abort</span>
<span id="L501" class="LineNr">501 </span> 3d/compare-eax-and 0/imm32
<span id="L502" class="LineNr">502 </span> 74/jump-if-= $allocate-region:<a href='501draw-text.mu.html#L481'>abort</a>/disp8
<span id="L503" class="LineNr">503 </span> <span class="subxComment"># earmark 8 bytes at the start for a new allocation descriptor</span>
<span id="L504" class="LineNr">504 </span> <span class="subxS1Comment"># . *eax = eax + 8</span>
<span id="L505" class="LineNr">505 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy eax to ecx</span>
<span id="L506" class="LineNr">506 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to ecx</span>
<span id="L507" class="LineNr">507 </span> 89/copy 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ecx to *eax</span>
<span id="L508" class="LineNr">508 </span> <span class="subxS1Comment"># . *(eax+4) = eax + n</span>
<span id="L509" class="LineNr">509 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy eax to ecx</span>
<span id="L510" class="LineNr">510 </span> 03/add 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># add *(ebp+12) to ecx</span>
<span id="L511" class="LineNr">511 </span> 89/copy 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx to *(eax+4)</span>
<span id="L512" class="LineNr">512 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L513" class="LineNr">513 </span> 59/pop-to-ecx
<span id="L514" class="LineNr">514 </span> 58/pop-to-eax
<span id="L515" class="LineNr">515 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L516" class="LineNr">516 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L517" class="LineNr">517 </span> 5d/pop-to-ebp
<span id="L518" class="LineNr">518 </span> c3/return
<span id="L519" class="LineNr">519 </span>
<span id="L520" class="LineNr">520 </span><span class="subxComment"># We could create a more general '$abort' jump target, but then we'd need to do</span>
<span id="L521" class="LineNr">521 </span><span class="subxComment"># a conditional jump followed by loading the error message and an unconditional</span>
<span id="L522" class="LineNr">522 </span><span class="subxComment"># jump. Or we'd need to unconditionally load the error message before a</span>
<span id="L523" class="LineNr">523 </span><span class="subxComment"># conditional jump, even if it's unused the vast majority of the time. This way</span>
<span id="L524" class="LineNr">524 </span><span class="subxComment"># we bloat a potentially cold segment in RAM so we can abort with a single</span>
<span id="L525" class="LineNr">525 </span><span class="subxComment"># instruction.</span>
<span id="L526" class="LineNr">526 </span><span class="Constant">$allocate-region:<a href='501draw-text.mu.html#L481'>abort</a></span>:
<span id="L527" class="LineNr">527 </span> (<a href='501draw-text.mu.html#L258'>draw-text-wrapping-right-then-down-from-cursor-over-full-screen</a> 0 <span class="Constant">"allocate-region: failed to allocate"</span> 3 0) <span class="subxComment"># 3=cyan</span>
<span id="L528" class="LineNr">528 </span> {
<span id="L529" class="LineNr">529 </span> eb/jump <span class="Constant">loop</span>/disp8
<span id="L530" class="LineNr">530 </span> }
<span id="L531" class="LineNr">531 </span> <span class="subxComment"># never gets here</span>
<span id="L532" class="LineNr">532 </span>
<span id="L533" class="LineNr">533 </span><span class="subxComment"># Claim the next 'n+4' bytes of memory and initialize the first 4 to n.</span>
<span id="L534" class="LineNr">534 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L535" class="LineNr">535 </span><span class="subxFunction">allocate-array</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L536" class="LineNr">536 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L537" class="LineNr">537 </span> 55/push-ebp
<span id="L538" class="LineNr">538 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L539" class="LineNr">539 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L540" class="LineNr">540 </span> 50/push-eax
<span id="L541" class="LineNr">541 </span> 51/push-ecx
<span id="L542" class="LineNr">542 </span> 52/push-edx
<span id="L543" class="LineNr">543 </span> <span class="subxComment"># ecx = n</span>
<span id="L544" class="LineNr">544 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ecx</span>
<span id="L545" class="LineNr">545 </span> <span class="subxComment"># var size/edx: int = n+4</span>
<span id="L546" class="LineNr">546 </span> 8d/copy-address 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+4 to edx</span>
<span id="L547" class="LineNr">547 </span> <span class="subxComment"># allocate(ad, size, out)</span>
<span id="L548" class="LineNr">548 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L549" class="LineNr">549 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+16)</span>
<span id="L550" class="LineNr">550 </span> 52/push-edx
<span id="L551" class="LineNr">551 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L552" class="LineNr">552 </span> <span class="subxS2Comment"># . . call</span>
<span id="L553" class="LineNr">553 </span> e8/call <a href='120allocate.subx.html#L43'>allocate</a>/disp32
<span id="L554" class="LineNr">554 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L555" class="LineNr">555 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L556" class="LineNr">556 </span> <span class="subxComment"># *out->payload = n</span>
<span id="L557" class="LineNr">557 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L558" class="LineNr">558 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(eax+4) to eax</span>
<span id="L559" class="LineNr">559 </span> <span class="subxS1Comment"># . skip payload->allocid</span>
<span id="L560" class="LineNr">560 </span> 05/add-to-eax 4/imm32
<span id="L561" class="LineNr">561 </span> <span class="subxS1Comment"># .</span>
<span id="L562" class="LineNr">562 </span> 89/copy 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ecx to *eax</span>
<span id="L563" class="LineNr">563 </span><span class="Constant">$allocate-array:end</span>:
<span id="L564" class="LineNr">564 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L565" class="LineNr">565 </span> 5a/pop-to-edx
<span id="L566" class="LineNr">566 </span> 59/pop-to-ecx
<span id="L567" class="LineNr">567 </span> 58/pop-to-eax
<span id="L568" class="LineNr">568 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L569" class="LineNr">569 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L570" class="LineNr">570 </span> 5d/pop-to-ebp
<span id="L571" class="LineNr">571 </span> c3/return
<span id="L572" class="LineNr">572 </span>
<span id="L573" class="LineNr">573 </span><span class="subxTest">test-allocate-array</span>:
<span id="L574" class="LineNr">574 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L575" class="LineNr">575 </span> 55/push-ebp
<span id="L576" class="LineNr">576 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L577" class="LineNr">577 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor containing 16 bytes</span>
<span id="L578" class="LineNr">578 </span> <span class="subxS1Comment"># . var end/ecx: (addr byte)</span>
<span id="L579" class="LineNr">579 </span> 89/<- %ecx 4/r32/esp
<span id="L580" class="LineNr">580 </span> <span class="subxS1Comment"># . var start/edx: (addr byte) = end - 16</span>
<span id="L581" class="LineNr">581 </span> 81 5/subop/subtract %esp 0x10/imm32
<span id="L582" class="LineNr">582 </span> 89/<- %edx 4/r32/esp
<span id="L583" class="LineNr">583 </span> <span class="subxS1Comment"># . ad = {start, end}</span>
<span id="L584" class="LineNr">584 </span> 51/push-ecx
<span id="L585" class="LineNr">585 </span> 52/push-edx
<span id="L586" class="LineNr">586 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L587" class="LineNr">587 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L588" class="LineNr">588 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L589" class="LineNr">589 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L590" class="LineNr">590 </span> 68/push 0/imm32
<span id="L591" class="LineNr">591 </span> 68/push 0/imm32
<span id="L592" class="LineNr">592 </span> 89/copy 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to edx</span>
<span id="L593" class="LineNr">593 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L594" class="LineNr">594 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L595" class="LineNr">595 </span> <span class="subxComment"># allocate-array(ad, 3, h)</span>
<span id="L596" class="LineNr">596 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L597" class="LineNr">597 </span> 52/push-edx
<span id="L598" class="LineNr">598 </span> 68/push 3/imm32
<span id="L599" class="LineNr">599 </span> 51/push-ecx
<span id="L600" class="LineNr">600 </span> <span class="subxS2Comment"># . . call</span>
<span id="L601" class="LineNr">601 </span> e8/call <a href='120allocate.subx.html#L535'>allocate-array</a>/disp32
<span id="L602" class="LineNr">602 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L603" class="LineNr">603 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L604" class="LineNr">604 </span> <span class="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L605" class="LineNr">605 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L606" class="LineNr">606 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: sets alloc-id in handle"</span>/imm32
<span id="L607" class="LineNr">607 </span> 68/push 0x34/imm32
<span id="L608" class="LineNr">608 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *edx</span>
<span id="L609" class="LineNr">609 </span> <span class="subxS2Comment"># . . call</span>
<span id="L610" class="LineNr">610 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L611" class="LineNr">611 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L612" class="LineNr">612 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L613" class="LineNr">613 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L614" class="LineNr">614 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L615" class="LineNr">615 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: sets payload in handle"</span>/imm32
<span id="L616" class="LineNr">616 </span> 53/push-ebx
<span id="L617" class="LineNr">617 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(edx+4)</span>
<span id="L618" class="LineNr">618 </span> <span class="subxS2Comment"># . . call</span>
<span id="L619" class="LineNr">619 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L620" class="LineNr">620 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L621" class="LineNr">621 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L622" class="LineNr">622 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L623" class="LineNr">623 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L624" class="LineNr">624 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: sets alloc-id in payload"</span>/imm32
<span id="L625" class="LineNr">625 </span> 68/push 0x34/imm32
<span id="L626" class="LineNr">626 </span> ff 6/subop/push 0/mod/indirect 3/rm32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ebx</span>
<span id="L627" class="LineNr">627 </span> <span class="subxS2Comment"># . . call</span>
<span id="L628" class="LineNr">628 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L629" class="LineNr">629 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L630" class="LineNr">630 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L631" class="LineNr">631 </span> <span class="subxComment"># check-ints-equal(h->payload->size, 3, msg)</span>
<span id="L632" class="LineNr">632 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L633" class="LineNr">633 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: sets array size in payload"</span>/imm32
<span id="L634" class="LineNr">634 </span> 68/push 3/imm32
<span id="L635" class="LineNr">635 </span> ff 6/subop/push 1/mod/*+disp8 3/rm32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebx+4)</span>
<span id="L636" class="LineNr">636 </span> <span class="subxS2Comment"># . . call</span>
<span id="L637" class="LineNr">637 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L638" class="LineNr">638 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L639" class="LineNr">639 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L640" class="LineNr">640 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L641" class="LineNr">641 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L642" class="LineNr">642 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: increments Next-alloc-id"</span>/imm32
<span id="L643" class="LineNr">643 </span> 68/push 0x35/imm32
<span id="L644" class="LineNr">644 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L645" class="LineNr">645 </span> <span class="subxS2Comment"># . . call</span>
<span id="L646" class="LineNr">646 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L647" class="LineNr">647 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L648" class="LineNr">648 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L649" class="LineNr">649 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 3 + 4 for alloc-id + 4 for array size, msg)</span>
<span id="L650" class="LineNr">650 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L651" class="LineNr">651 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L573'>test-allocate-array</a>: updates allocation descriptor"</span>/imm32
<span id="L652" class="LineNr">652 </span> 68/push 0xb/imm32
<span id="L653" class="LineNr">653 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to eax</span>
<span id="L654" class="LineNr">654 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L655" class="LineNr">655 </span> 50/push-eax
<span id="L656" class="LineNr">656 </span> <span class="subxS2Comment"># . . call</span>
<span id="L657" class="LineNr">657 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L658" class="LineNr">658 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L659" class="LineNr">659 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L660" class="LineNr">660 </span> <span class="subxComment"># clean up</span>
<span id="L661" class="LineNr">661 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L662" class="LineNr">662 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L663" class="LineNr">663 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x20/imm32 <span class="subxComment"># add to esp</span>
<span id="L664" class="LineNr">664 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L665" class="LineNr">665 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L666" class="LineNr">666 </span> 5d/pop-to-ebp
<span id="L667" class="LineNr">667 </span> c3/return
<span id="L668" class="LineNr">668 </span>
<span id="L669" class="LineNr">669 </span><span class="subxFunction">copy-array</span>: <span class="subxComment"># ad: (addr allocation-descriptor), src: (addr array _T), out: (addr handle array _T)</span>
<span id="L670" class="LineNr">670 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L671" class="LineNr">671 </span> 55/push-ebp
<span id="L672" class="LineNr">672 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L673" class="LineNr">673 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L674" class="LineNr">674 </span> 50/push-eax
<span id="L675" class="LineNr">675 </span> 51/push-ecx
<span id="L676" class="LineNr">676 </span> 52/push-edx
<span id="L677" class="LineNr">677 </span> 56/push-esi
<span id="L678" class="LineNr">678 </span> <span class="subxComment"># esi = src</span>
<span id="L679" class="LineNr">679 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to esi</span>
<span id="L680" class="LineNr">680 </span> <span class="subxComment"># var size/ecx: int = src->size+4</span>
<span id="L681" class="LineNr">681 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ecx</span>
<span id="L682" class="LineNr">682 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to ecx</span>
<span id="L683" class="LineNr">683 </span> <span class="subxComment"># allocate(ad, size, out)</span>
<span id="L684" class="LineNr">684 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L685" class="LineNr">685 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+16)</span>
<span id="L686" class="LineNr">686 </span> 51/push-ecx
<span id="L687" class="LineNr">687 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L688" class="LineNr">688 </span> <span class="subxS2Comment"># . . call</span>
<span id="L689" class="LineNr">689 </span> e8/call <a href='120allocate.subx.html#L43'>allocate</a>/disp32
<span id="L690" class="LineNr">690 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L691" class="LineNr">691 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L692" class="LineNr">692 </span> <span class="subxComment"># var payload/eax: (addr byte) = out->payload</span>
<span id="L693" class="LineNr">693 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L694" class="LineNr">694 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(eax+4) to eax</span>
<span id="L695" class="LineNr">695 </span> <span class="subxS1Comment"># . skip payload->allocid</span>
<span id="L696" class="LineNr">696 </span> 05/add-to-eax 4/imm32
<span id="L697" class="LineNr">697 </span> <span class="subxComment"># var max/ecx: (addr byte) = payload + size</span>
<span id="L698" class="LineNr">698 </span> 01/add 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># add eax to ecx</span>
<span id="L699" class="LineNr">699 </span> <span class="subxComment"># _append-4(payload, max, src, &src->data[src->size])</span>
<span id="L700" class="LineNr">700 </span> <span class="subxS2Comment"># . . push &src->data[src->size]</span>
<span id="L701" class="LineNr">701 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to edx</span>
<span id="L702" class="LineNr">702 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 2/index/edx <span class="Normal"> . </span> 2/r32/edx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy esi+edx+4 to edx</span>
<span id="L703" class="LineNr">703 </span> 52/push-edx
<span id="L704" class="LineNr">704 </span> <span class="subxS2Comment"># . . push src</span>
<span id="L705" class="LineNr">705 </span> 56/push-esi
<span id="L706" class="LineNr">706 </span> <span class="subxS2Comment"># . . push max</span>
<span id="L707" class="LineNr">707 </span> 51/push-ecx
<span id="L708" class="LineNr">708 </span> <span class="subxS2Comment"># . . push payload</span>
<span id="L709" class="LineNr">709 </span> 50/push-eax
<span id="L710" class="LineNr">710 </span> <span class="subxS2Comment"># . . call</span>
<span id="L711" class="LineNr">711 </span> e8/call <a href='108write.subx.html#L171'>_append-4</a>/disp32
<span id="L712" class="LineNr">712 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L713" class="LineNr">713 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/imm32 <span class="subxComment"># add to esp</span>
<span id="L714" class="LineNr">714 </span><span class="Constant">$copy-array:end</span>:
<span id="L715" class="LineNr">715 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L716" class="LineNr">716 </span> 5e/pop-to-esi
<span id="L717" class="LineNr">717 </span> 5a/pop-to-edx
<span id="L718" class="LineNr">718 </span> 59/pop-to-ecx
<span id="L719" class="LineNr">719 </span> 58/pop-to-eax
<span id="L720" class="LineNr">720 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L721" class="LineNr">721 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L722" class="LineNr">722 </span> 5d/pop-to-ebp
<span id="L723" class="LineNr">723 </span> c3/return
<span id="L724" class="LineNr">724 </span>
<span id="L725" class="LineNr">725 </span><span class="subxTest">test-copy-array</span>:
<span id="L726" class="LineNr">726 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L727" class="LineNr">727 </span> 55/push-ebp
<span id="L728" class="LineNr">728 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L729" class="LineNr">729 </span> <span class="subxComment"># var src/esi: (addr array int) = [3, 4, 5]</span>
<span id="L730" class="LineNr">730 </span> 68/push 5/imm32
<span id="L731" class="LineNr">731 </span> 68/push 4/imm32
<span id="L732" class="LineNr">732 </span> 68/push 3/imm32
<span id="L733" class="LineNr">733 </span> 68/push 0xc/imm32/size
<span id="L734" class="LineNr">734 </span> 89/copy 3/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to esi</span>
<span id="L735" class="LineNr">735 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor containing 32 bytes</span>
<span id="L736" class="LineNr">736 </span> <span class="subxS1Comment"># . var end/ecx: (addr byte)</span>
<span id="L737" class="LineNr">737 </span> 89/<- %ecx 4/r32/esp
<span id="L738" class="LineNr">738 </span> <span class="subxS1Comment"># . var start/edx: (addr byte) = end - 32</span>
<span id="L739" class="LineNr">739 </span> 81 5/subop/subtract %esp 0x20/imm32
<span id="L740" class="LineNr">740 </span> 89/<- %edx 4/r32/esp
<span id="L741" class="LineNr">741 </span> <span class="subxS1Comment"># . ad = {start, end}</span>
<span id="L742" class="LineNr">742 </span> 51/push-ecx
<span id="L743" class="LineNr">743 </span> 52/push-edx
<span id="L744" class="LineNr">744 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L745" class="LineNr">745 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L746" class="LineNr">746 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L747" class="LineNr">747 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L748" class="LineNr">748 </span> 68/push 0/imm32
<span id="L749" class="LineNr">749 </span> 68/push 0/imm32
<span id="L750" class="LineNr">750 </span> 89/copy 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to edx</span>
<span id="L751" class="LineNr">751 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L752" class="LineNr">752 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L753" class="LineNr">753 </span> <span class="subxComment"># copy-array(ad, src, h)</span>
<span id="L754" class="LineNr">754 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L755" class="LineNr">755 </span> 52/push-edx
<span id="L756" class="LineNr">756 </span> 56/push-esi
<span id="L757" class="LineNr">757 </span> 51/push-ecx
<span id="L758" class="LineNr">758 </span> <span class="subxS2Comment"># . . call</span>
<span id="L759" class="LineNr">759 </span> e8/call <a href='120allocate.subx.html#L669'>copy-array</a>/disp32
<span id="L760" class="LineNr">760 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L761" class="LineNr">761 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L762" class="LineNr">762 </span> <span class="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L763" class="LineNr">763 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L764" class="LineNr">764 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: sets alloc-id in handle"</span>/imm32
<span id="L765" class="LineNr">765 </span> 68/push 0x34/imm32
<span id="L766" class="LineNr">766 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *edx</span>
<span id="L767" class="LineNr">767 </span> <span class="subxS2Comment"># . . call</span>
<span id="L768" class="LineNr">768 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L769" class="LineNr">769 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L770" class="LineNr">770 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L771" class="LineNr">771 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L772" class="LineNr">772 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L773" class="LineNr">773 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: sets payload in handle"</span>/imm32
<span id="L774" class="LineNr">774 </span> 53/push-ebx
<span id="L775" class="LineNr">775 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(edx+4)</span>
<span id="L776" class="LineNr">776 </span> <span class="subxS2Comment"># . . call</span>
<span id="L777" class="LineNr">777 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L778" class="LineNr">778 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L779" class="LineNr">779 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L780" class="LineNr">780 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L781" class="LineNr">781 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L782" class="LineNr">782 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: sets alloc-id in payload"</span>/imm32
<span id="L783" class="LineNr">783 </span> 68/push 0x34/imm32
<span id="L784" class="LineNr">784 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *edx</span>
<span id="L785" class="LineNr">785 </span> <span class="subxS2Comment"># . . call</span>
<span id="L786" class="LineNr">786 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L787" class="LineNr">787 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L788" class="LineNr">788 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L789" class="LineNr">789 </span> <span class="subxComment"># var payload/eax: (addr int) = lookup(h)</span>
<span id="L790" class="LineNr">790 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L791" class="LineNr">791 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(edx+4)</span>
<span id="L792" class="LineNr">792 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *edx</span>
<span id="L793" class="LineNr">793 </span> <span class="subxS2Comment"># . . call</span>
<span id="L794" class="LineNr">794 </span> e8/call <a href='120allocate.subx.html#L226'>lookup</a>/disp32
<span id="L795" class="LineNr">795 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L796" class="LineNr">796 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L797" class="LineNr">797 </span> <span class="subxComment"># check-ints-equal(payload->size, 0xc, msg)</span>
<span id="L798" class="LineNr">798 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L799" class="LineNr">799 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: sets array size in payload"</span>/imm32
<span id="L800" class="LineNr">800 </span> 68/push 0xc/imm32
<span id="L801" class="LineNr">801 </span> ff 6/subop/push 0/mod/indirect 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *eax</span>
<span id="L802" class="LineNr">802 </span> <span class="subxS2Comment"># . . call</span>
<span id="L803" class="LineNr">803 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L804" class="LineNr">804 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L805" class="LineNr">805 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L806" class="LineNr">806 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L807" class="LineNr">807 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L808" class="LineNr">808 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: increments Next-alloc-id"</span>/imm32
<span id="L809" class="LineNr">809 </span> 68/push 0x35/imm32
<span id="L810" class="LineNr">810 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L811" class="LineNr">811 </span> <span class="subxS2Comment"># . . call</span>
<span id="L812" class="LineNr">812 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L813" class="LineNr">813 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L814" class="LineNr">814 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L815" class="LineNr">815 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 12 + 4 for alloc-id + 4 for size, msg)</span>
<span id="L816" class="LineNr">816 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L817" class="LineNr">817 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L725'>test-copy-array</a>: updates allocation descriptor"</span>/imm32
<span id="L818" class="LineNr">818 </span> 68/push 0x14/imm32
<span id="L819" class="LineNr">819 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to eax</span>
<span id="L820" class="LineNr">820 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L821" class="LineNr">821 </span> 50/push-eax
<span id="L822" class="LineNr">822 </span> <span class="subxS2Comment"># . . call</span>
<span id="L823" class="LineNr">823 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L824" class="LineNr">824 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L825" class="LineNr">825 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L826" class="LineNr">826 </span> <span class="subxComment"># clean up</span>
<span id="L827" class="LineNr">827 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L33'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L828" class="LineNr">828 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L829" class="LineNr">829 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x40/imm32 <span class="subxComment"># add to esp</span>
<span id="L830" class="LineNr">830 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L831" class="LineNr">831 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L832" class="LineNr">832 </span> 5d/pop-to-ebp
<span id="L833" class="LineNr">833 </span> c3/return
<span id="L834" class="LineNr">834 </span>
<span id="L835" class="LineNr">835 </span><span class="subxComment"># Fill a region of memory with zeroes.</span>
<span id="L836" class="LineNr">836 </span><span class="subxFunction">zero-out</span>: <span class="subxComment"># start: (addr byte), size: int</span>
<span id="L837" class="LineNr">837 </span> <span class="subxComment"># pseudocode:</span>
<span id="L838" class="LineNr">838 </span> <span class="subxComment"># curr/esi = start</span>
<span id="L839" class="LineNr">839 </span> <span class="subxComment"># i/ecx = 0</span>
<span id="L840" class="LineNr">840 </span> <span class="subxComment"># while true</span>
<span id="L841" class="LineNr">841 </span> <span class="subxComment"># if (i >= size) break</span>
<span id="L842" class="LineNr">842 </span> <span class="subxComment"># *curr = 0</span>
<span id="L843" class="LineNr">843 </span> <span class="subxComment"># ++curr</span>
<span id="L844" class="LineNr">844 </span> <span class="subxComment"># ++i</span>
<span id="L845" class="LineNr">845 </span> <span class="subxComment">#</span>
<span id="L846" class="LineNr">846 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L847" class="LineNr">847 </span> 55/push-ebp
<span id="L848" class="LineNr">848 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L849" class="LineNr">849 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L850" class="LineNr">850 </span> 50/push-eax
<span id="L851" class="LineNr">851 </span> 51/push-ecx
<span id="L852" class="LineNr">852 </span> 52/push-edx
<span id="L853" class="LineNr">853 </span> 56/push-esi
<span id="L854" class="LineNr">854 </span> <span class="subxComment"># curr/esi = start</span>
<span id="L855" class="LineNr">855 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span>
<span id="L856" class="LineNr">856 </span> <span class="subxComment"># var i/ecx: int = 0</span>
<span id="L857" class="LineNr">857 </span> 31/xor 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear ecx</span>
<span id="L858" class="LineNr">858 </span> <span class="subxComment"># edx = size</span>
<span id="L859" class="LineNr">859 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span>
<span id="L860" class="LineNr">860 </span><span class="Constant">$zero-out:loop</span>:
<span id="L861" class="LineNr">861 </span> <span class="subxComment"># if (i >= size) break</span>
<span id="L862" class="LineNr">862 </span> 39/compare 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with edx</span>
<span id="L863" class="LineNr">863 </span> 7d/jump-if->= $zero-out:end/disp8
<span id="L864" class="LineNr">864 </span> <span class="subxComment"># *curr = 0</span>
<span id="L865" class="LineNr">865 </span> c6 0/subop/copy-byte 0/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm8 <span class="subxComment"># copy byte to *esi</span>
<span id="L866" class="LineNr">866 </span> <span class="subxComment"># ++curr</span>
<span id="L867" class="LineNr">867 </span> 46/increment-esi
<span id="L868" class="LineNr">868 </span> <span class="subxComment"># ++i</span>
<span id="L869" class="LineNr">869 </span> 41/increment-ecx
<span id="L870" class="LineNr">870 </span> eb/jump $zero-out:<span class="Constant">loop</span>/disp8
<span id="L871" class="LineNr">871 </span><span class="Constant">$zero-out:end</span>:
<span id="L872" class="LineNr">872 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L873" class="LineNr">873 </span> 5e/pop-to-esi
<span id="L874" class="LineNr">874 </span> 5a/pop-to-edx
<span id="L875" class="LineNr">875 </span> 59/pop-to-ecx
<span id="L876" class="LineNr">876 </span> 58/pop-to-eax
<span id="L877" class="LineNr">877 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L878" class="LineNr">878 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L879" class="LineNr">879 </span> 5d/pop-to-ebp
<span id="L880" class="LineNr">880 </span> c3/return
<span id="L881" class="LineNr">881 </span>
<span id="L882" class="LineNr">882 </span><span class="subxTest">test-zero-out</span>:
<span id="L883" class="LineNr">883 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L884" class="LineNr">884 </span> 55/push-ebp
<span id="L885" class="LineNr">885 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span>
<span id="L886" class="LineNr">886 </span> <span class="subxComment"># region/ecx = 34, 35, 36, 37</span>
<span id="L887" class="LineNr">887 </span> 68/push 0x37363534/imm32
<span id="L888" class="LineNr">888 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span>
<span id="L889" class="LineNr">889 </span> <span class="subxComment"># zero-out(ecx, 3)</span>
<span id="L890" class="LineNr">890 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L891" class="LineNr">891 </span> 68/push 3/imm32/size
<span id="L892" class="LineNr">892 </span> 51/push-ecx
<span id="L893" class="LineNr">893 </span> <span class="subxS2Comment"># . . call</span>
<span id="L894" class="LineNr">894 </span> e8/call <a href='120allocate.subx.html#L836'>zero-out</a>/disp32
<span id="L895" class="LineNr">895 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L896" class="LineNr">896 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span>
<span id="L897" class="LineNr">897 </span> <span class="subxComment"># first 3 bytes cleared, fourth left alone</span>
<span id="L898" class="LineNr">898 </span> <span class="subxS1Comment"># . check-ints-equal(*ecx, 0x37000000, msg)</span>
<span id="L899" class="LineNr">899 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L900" class="LineNr">900 </span> 68/push <span class="Constant">"F - test-zero-out"</span>/imm32
<span id="L901" class="LineNr">901 </span> 68/push 0x37000000/imm32
<span id="L902" class="LineNr">902 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># push *ecx</span>
<span id="L903" class="LineNr">903 </span> <span class="subxS2Comment"># . . call</span>
<span id="L904" class="LineNr">904 </span> e8/call <a href='502test.mu.html#L2'>check-ints-equal</a>/disp32
<span id="L905" class="LineNr">905 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L906" class="LineNr">906 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span>
<span id="L907" class="LineNr">907 </span> <span class="subxS1Comment"># . reclaim locals</span>
<span id="L908" class="LineNr">908 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to esp</span>
<span id="L909" class="LineNr">909 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L910" class="LineNr">910 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L911" class="LineNr">911 </span> 5d/pop-to-ebp
<span id="L912" class="LineNr">912 </span> c3/return
<span id="L913" class="LineNr">913 </span>
<span id="L914" class="LineNr">914 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|