-
Notifications
You must be signed in to change notification settings - Fork 0
/
output.asm
686 lines (680 loc) · 22.5 KB
/
output.asm
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
#ProgramNode
.data
ARRAY_OUT_OF_BOUNDS_ERROR_MESSAGE: .asciiz "You may not access an index in an array out of it's range.\nPrepare to die."
.text
main:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
addi $sp, $sp, -52 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
li $t0, 0 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#CompoundStatementNode
#ProcedureStatementNode
jal populate
#ProcedureStatementNode
jal r
li $v0, 10
syscall
#SubProgramDeclarationsNode
#SubProgramNode
factorial:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
lw $sp, ($sp) #move stack pointer to the head of the stack
addi $sp, $sp, -28 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
#search for one level up function
li $t2, 0 #load current level - 1 (what we are searching for)
lw $t1, 16($t0) #load previous function's level
beq $t1, $t2, _u
_:
lw $t0, 12($t0) #go one level up
lw $t1, 16($t0) #get level of function
bne $t1, $t2, _
_u:
sw $t0, 12($sp) #save one level up pointer
li $t0, 1 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#SubProgramHeadNode
lw $t0, 8($sp)
lw $t0, ($t0)
lw $t1, 4($t0) #get loaded value from stack
sw $t1, 24($sp) #save word in correct spot (hopefully?)
#CompoundStatementNode
#IfStatementNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to a's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 1 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
slt $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp)
lw $s0, ($t0)
beqz $s0, GoToFalseStatement
#FunctionAssignmentStatementNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 1 #The actual literal value
sw $t1, ($t0) #put value on stack
#putting ptr to factorial's function call in V0
move $v0, $sp
addi $v0, $v0, 20 #offset to variable
lw $t0, ($sp) #has stack head
lw $t2, ($t0) #has value to assign
sw $t2, ($v0) #make assignment
j SkipFalseStatement
GoToFalseStatement:
#FunctionAssignmentStatementNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to a's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#FunctionExpressionNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to a's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#ArrayVarNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, -2 #The actual literal value
sw $t1, ($t0) #put value on stack
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
lw $t1, ($t1)
sw $t1, ($t0)
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
sub $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
jal factorial
lw $t0, ($sp) #get ptr to return value from function (stack head)
lw $t1, ($t0) #get return value from function
addi $t0, $t0, 4 #pop stack head back to where it shoudl be
sw $t0, ($sp) #put stackhead back to it's rightful value
sw $t1, ($t0) #put return value from function there
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
mul $t1, $t1, $t2
sw $t1, ($t0) #save computation
#putting ptr to factorial's function call in V0
move $v0, $sp
addi $v0, $v0, 20 #offset to variable
lw $t0, ($sp) #has stack head
lw $t2, ($t0) #has value to assign
sw $t2, ($v0) #make assignment
SkipFalseStatement:
lw $t0, 4($sp) #put return address in t0
lw $t1, 20($sp) #put return value in t1
lw $sp, 8($sp) #put stack pointer back up
lw $t2, ($sp) #put t2 to stack head ptr in calling function
sw $t1, ($t2) #put return value on stack
jr $t0
#SubProgramDeclarationsNode
#SubProgramNode
populate:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
lw $sp, ($sp) #move stack pointer to the head of the stack
addi $sp, $sp, -28 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
#search for one level up function
li $t2, 0 #load current level - 1 (what we are searching for)
lw $t1, 16($t0) #load previous function's level
beq $t1, $t2, _s
_t:
lw $t0, 12($t0) #go one level up
lw $t1, 16($t0) #get level of function
bne $t1, $t2, _t
_s:
sw $t0, 12($sp) #save one level up pointer
li $t0, 1 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#SubProgramHeadNode
lw $t0, 8($sp)
lw $t0, ($t0)
#CompoundStatementNode
#VariableAssignmentStatementNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 0 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignVariableNode #putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp)
sw $v0, ($t0) #save ptr to stack
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
#VariableAssignmentStatementNode
#ConsoleReadNode
lw $t0, ($sp)
li $v0, 5
syscall
sw $v0, ($t0)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignArrayVarNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, -2 #The actual literal value
sw $t1, ($t0) #put value on stack
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
sw $t1, ($t0) #save ptr
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
#VariableAssignmentStatementNode
#ConsoleReadNode
lw $t0, ($sp)
li $v0, 5
syscall
sw $v0, ($t0)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignArrayVarNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, -1 #The actual literal value
sw $t1, ($t0) #put value on stack
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
sw $t1, ($t0) #save ptr
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
#WhileLoopNode
WhileCondition:
#BinaryOperationNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 4 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
sle $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp) #get stack head ptr
lw $t1, ($t0) #get result off stack
beqz $t1, EndOfWhileLoop #skip if evaluates to 0
#CompoundStatementNode
#VariableAssignmentStatementNode
#FunctionExpressionNode
#ArrayVarNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 1 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
sub $t1, $t1, $t2
sw $t1, ($t0) #save computation
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
lw $t1, ($t1)
sw $t1, ($t0)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
jal populate_populate
lw $t0, ($sp) #get ptr to return value from function (stack head)
lw $t1, ($t0) #get return value from function
addi $t0, $t0, 4 #pop stack head back to where it shoudl be
sw $t0, ($sp) #put stackhead back to it's rightful value
sw $t1, ($t0) #put return value from function there
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignArrayVarNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
sw $t1, ($t0) #save ptr
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
#VariableAssignmentStatementNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 1 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
add $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignVariableNode #putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp)
sw $v0, ($t0) #save ptr to stack
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
j WhileCondition #jump to evaluate condition again
EndOfWhileLoop:
lw $t0, 4($sp) #put return address in t0
lw $t1, 20($sp) #put return value in t1
lw $sp, 8($sp) #put stack pointer back up
lw $t2, ($sp) #put t2 to stack head ptr in calling function
sw $t1, ($t2) #put return value on stack
jr $t0
#SubProgramDeclarationsNode
#SubProgramNode
populate_populate:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
lw $sp, ($sp) #move stack pointer to the head of the stack
addi $sp, $sp, -28 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
#search for one level up function
li $t2, 1 #load current level - 1 (what we are searching for)
lw $t1, 16($t0) #load previous function's level
beq $t1, $t2, _p
_r:
lw $t0, 12($t0) #go one level up
lw $t1, 16($t0) #get level of function
bne $t1, $t2, _r
_p:
sw $t0, 12($sp) #save one level up pointer
li $t0, 2 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#SubProgramHeadNode
lw $t0, 8($sp)
lw $t0, ($t0)
lw $t1, 4($t0) #get loaded value from stack
sw $t1, 24($sp) #save word in correct spot (hopefully?)
#CompoundStatementNode
#FunctionAssignmentStatementNode
#FunctionExpressionNode
#AccessVariableNode
#putting ptr to a's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
jal factorial
lw $t0, ($sp) #get ptr to return value from function (stack head)
lw $t1, ($t0) #get return value from function
addi $t0, $t0, 4 #pop stack head back to where it shoudl be
sw $t0, ($sp) #put stackhead back to it's rightful value
sw $t1, ($t0) #put return value from function there
#putting ptr to populate's function call in V0
move $v0, $sp
addi $v0, $v0, 20 #offset to variable
lw $t0, ($sp) #has stack head
lw $t2, ($t0) #has value to assign
sw $t2, ($v0) #make assignment
lw $t0, 4($sp) #put return address in t0
lw $t1, 20($sp) #put return value in t1
lw $sp, 8($sp) #put stack pointer back up
lw $t2, ($sp) #put t2 to stack head ptr in calling function
sw $t1, ($t2) #put return value on stack
jr $t0
#SubProgramDeclarationsNode
#SubProgramNode
r:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
lw $sp, ($sp) #move stack pointer to the head of the stack
addi $sp, $sp, -28 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
#search for one level up function
li $t2, 0 #load current level - 1 (what we are searching for)
lw $t1, 16($t0) #load previous function's level
beq $t1, $t2, _n
_o:
lw $t0, 12($t0) #go one level up
lw $t1, 16($t0) #get level of function
bne $t1, $t2, _o
_n:
sw $t0, 12($sp) #save one level up pointer
li $t0, 1 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#SubProgramHeadNode
lw $t0, 8($sp)
lw $t0, ($t0)
#CompoundStatementNode
#VariableAssignmentStatementNode
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, -2 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignVariableNode #putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp)
sw $v0, ($t0) #save ptr to stack
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
#WhileLoopNode
WhileConditionu:
#BinaryOperationNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 4 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
sle $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp) #get stack head ptr
lw $t1, ($t0) #get result off stack
beqz $t1, EndOfWhileLoopu #skip if evaluates to 0
#ProcedureStatementNode
jal r_r1
j WhileConditionu #jump to evaluate condition again
EndOfWhileLoopu:
lw $t0, 4($sp) #put return address in t0
lw $t1, 20($sp) #put return value in t1
lw $sp, 8($sp) #put stack pointer back up
lw $t2, ($sp) #put t2 to stack head ptr in calling function
sw $t1, ($t2) #put return value on stack
jr $t0
#SubProgramDeclarationsNode
#SubProgramNode
r_r1:
#DeclarationsNode
move $t0, $sp #saves stack pointer for later useage
lw $sp, ($sp) #move stack pointer to the head of the stack
addi $sp, $sp, -24 #move stack pointer for function start
addi $s0, $sp, -4
sw $s0, ($sp) #set up stack pointer for new function
sw $ra, 4($sp) #save return address
sw $t0, 8($sp) #save old stack pointer
#search for one level up function
li $t2, 1 #load current level - 1 (what we are searching for)
lw $t1, 16($t0) #load previous function's level
beq $t1, $t2, _l
_m:
lw $t0, 12($t0) #go one level up
lw $t1, 16($t0) #get level of function
bne $t1, $t2, _m
_l:
sw $t0, 12($sp) #save one level up pointer
li $t0, 2 #load function level to t0
sw $t0, 16($sp) #save scope level of this function
#SubProgramHeadNode
lw $t0, 8($sp)
lw $t0, ($t0)
#CompoundStatementNode
#ConsoleWriteNode
#ArrayVarNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
lw $v0, 12($v0) #1
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
#putting ptr to fibs's function call in V0
move $v0, $sp
lw $v0, 12($v0) #0
lw $v0, 12($v0) #1
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp) #load stack head pointer
lw $t1, ($t0) #put index in t0
subi $t1, $t1, -2 #treat as 0 based indexing
bltz $t1, ARRAY_OUT_OF_BOUNDS_ERROR
bge $t1, 7, ARRAY_OUT_OF_BOUNDS_ERROR
sll $t1, $t1, 2 #covert to bytes
add $t1, $t1, $v0 #offset in array
lw $t1, ($t1)
sw $t1, ($t0)
lw $t0, ($sp)
lw $a0, ($t0)
li $v0, 1
syscall
li $v0, 11 #prepare syscall for print character
li $a0, 10 #put newline to be printed
syscall
#VariableAssignmentStatementNode
#BinaryOperationNode
#AccessVariableNode
#putting ptr to iter's function call in V0
move $v0, $sp
lw $v0, 12($v0) #1
addi $v0, $v0, 24 #offset to variable
lw $t0, ($v0)
lw $t1, ($sp)
sw $t0, ($t1)
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#LiteralNode
lw $t0, ($sp) #put stack head pointer in t0
li $t1, 1 #The actual literal value
sw $t1, ($t0) #put value on stack
lw $t0, ($sp)
addi $t0, $t0, 4
sw $t0, ($sp)
lw $t1, ($t0) #put first operand in t1
lw $t2, -4($t0) #put second operand in t1
add $t1, $t1, $t2
sw $t1, ($t0) #save computation
lw $t0, ($sp)
addi $t0, $t0, -4
sw $t0, ($sp)
#AssignVariableNode #putting ptr to iter's function call in V0
move $v0, $sp
lw $v0, 12($v0) #1
addi $v0, $v0, 24 #offset to variable
lw $t0, ($sp)
sw $v0, ($t0) #save ptr to stack
lw $t0, ($sp) #has stack head
lw $t1, ($t0) #has ptr to assign to
lw $t2, 4($t0) #has value to assign
sw $t2, ($t1) #make assignment
addi $t0, $t0, 4
sw $t0, ($sp) #pop off stack values
lw $t0, 4($sp) #put return address in t0
lw $t1, 20($sp) #put return value in t1
lw $sp, 8($sp) #put stack pointer back up
lw $t2, ($sp) #put t2 to stack head ptr in calling function
sw $t1, ($t2) #put return value on stack
jr $t0
#SubProgramDeclarationsNode
#ERRORs
ARRAY_OUT_OF_BOUNDS_ERROR:
la $a0, ARRAY_OUT_OF_BOUNDS_ERROR_MESSAGE
li $v0, 4
syscall
li $v0, 17
li $a0, 1
syscall