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[/] [ion/] [trunk/] [src/] [opcodes/] [opcodes.s] - Blame information for rev 4

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Line No.	Rev	Author	Line
1	2	ja_rd	`################################################################################`
2	4	ja_rd	`# opcode.s -- MIPS opcode tester for Ion project`
3	2	ja_rd	`#-------------------------------------------------------------------------------`
4			`# ORIGINAL AUTHOR: Steve Rhoads (rhoadss@yahoo.com) -- 1/10/01`
5			`#`
6			`# This file is an edited version of 'opcodes.asm', which is part of the Plasma`
7			`# project (http://opencores.org/project,plasma).`
8			`# COPYRIGHT: Software placed into the public domain by the original author.`
9			`# Software 'as is' without warranty. Author liable for nothing.`
10	4	ja_rd	`#`
11	2	ja_rd	`#-------------------------------------------------------------------------------`
12	4	ja_rd	`#`
13			`# This assembly file tests all of the opcodes supported by the Ion core.`
14	2	ja_rd	`# This test assumes that address 0x20000000 is the UART write register.`
15			`# Successful tests will print out "A" or "AB" or "ABC" or ....`
16			`# Missing letters or letters out of order indicate a failure.`
17			`#-------------------------------------------------------------------------------`
18	4	ja_rd	`# NOTE: This test bench relies on the simulation logs to catch errors. That is,`
19			`# unlike the original Plasma code, this one does not test the test success`
20			`# conditions. instead, it performs the operations to be tested and relies on you`
21			`# to compare the logs from the logic simulation and the software simulation.`
22			`# Test that work this way have been commented with this tag: "@log"`
23			`#`
24	2	ja_rd	`#-------------------------------------------------------------------------------`
25	4	ja_rd	`# NOTE: NOPs have been inserted after load instructions.`
26	2	ja_rd	`#`
27			`################################################################################`
28
29	4	ja_rd	`#-- Set flags below to >0 to enable/disable test assembly ------------------`
30	2	ja_rd
31	4	ja_rd	`.set TEST_UNALIGNED_LOADS, 0 # unaligned loads`
32			`.set TEST_UNALIGNED_STORES, 0 # unaligned stores`
33			`.set TEST_BREAK, 1 # BREAK instruction`
34			`# WARNING: the assembler expands div instructions, see 'as' manual`
35			`.set TEST_DIV, 0 # DIV* instructions`
36			`.set TEST_MUL, 0 # MUL* instructions`
37	2	ja_rd
38	4	ja_rd	`#---------------------------------------------------------------------------`
39
40	2	ja_rd	`.text`
41			`.align 2`
42			`.globl entry`
43			`.ent entry`
44			`entry:`
45			`.set noreorder`
46
47			`la $gp, _gp #initialize stack pointer`
48			`la $4, __bss_start #$4 = .sbss_start`
49			`la $5, _end #$5 = .bss_end`
50			`nop #no stack needed`
51			`nop`
52
53			`b StartTest`
54			`nop #nops required to place ISR at 0x3c`
55			`nop`
56
57			`OS_AsmPatchValue:`
58			`#Code to place at address 0x3c`
59			`lui $26, 0x1000`
60			`ori $26, $26, 0x3c`
61			`jr $26`
62			`nop`
63
64			`.org 0x3c`
65			`InterruptVector: # Address=0x3c`
66			`mfc0 $26,$14 # C0_EPC=14 (Exception PC)`
67			`jr $26`
68			`add $4,$4,5`
69
70			`StartTest:`
71			`mtc0 $0,$12 # disable interrupts`
72			`lui $20,0x2000 # serial port write address`
73			`ori $21,$0,'\n' # <CR> character`
74			`ori $22,$0,'X' # 'X' letter`
75			`ori $23,$0,'\r'`
76			`ori $24,$0,0x0f80 # temp memory`
77
78			`sb $23,0($20)`
79			`sb $21,0($20)`
80			`sb $23,0($20)`
81			`sb $21,0($20)`
82			`sb $23,0($20)`
83			`sb $21,0($20)`
84			`sb $23,0($20)`
85			`sb $21,0($20)`
86
87			`#Patch interrupt vector to 0x1000003c`
88			`la $5, OS_AsmPatchValue`
89			`sub $6,$5,0x1000`
90			`blez $6,NoPatch`
91			`nop`
92			`#lw $6, 0($5)`
93			`#sw $6, 0x3c($0)`
94			`#lw $6, 4($5)`
95			`#sw $6, 0x40($0)`
96			`#lw $6, 8($5)`
97			`#sw $6, 0x44($0)`
98			`#lw $6, 12($5)`
99			`#sw $6, 0x48($0)`
100			`NoPatch:`
101
102			`######################################`
103			`#Arithmetic Instructions`
104			`######################################`
105			`ArthmeticTest:`
106			`ori $2,$0,'A'`
107			`sb $2,0($20)`
108			`ori $2,$0,'r'`
109			`sb $2,0($20)`
110			`ori $2,$0,'i'`
111			`sb $2,0($20)`
112			`ori $2,$0,'t'`
113			`sb $2,0($20)`
114			`ori $2,$0,'h'`
115			`sb $2,0($20)`
116			`sb $23,0($20)`
117			`sb $21,0($20)`
118
119			`#a: ADD`
120			`ori $2,$0,'a'`
121			`sb $2,0($20)`
122			`ori $3,$0,5`
123			`ori $4,$0,60`
124			`add $2,$3,$4`
125			`sb $2,0($20) #A`
126			`sb $23,0($20)`
127			`sb $21,0($20)`
128
129			`#b: ADDI`
130			`ori $2,$0,'b'`
131			`sb $2,0($20)`
132			`ori $4,$0,60`
133			`addi $2,$4,5`
134			`sb $2,0($20) #A`
135			`sb $23,0($20)`
136			`sb $21,0($20)`
137
138			`#c: ADDIU`
139			`ori $2,$0,'c'`
140			`sb $2,0($20)`
141			`ori $4,$0,50`
142			`addiu $5,$4,15`
143			`sb $5,0($20) #A`
144			`sb $23,0($20)`
145			`sb $21,0($20)`
146
147			`#d: ADDU`
148			`ori $2,$0,'d'`
149			`sb $2,0($20)`
150			`ori $3,$0,5`
151			`ori $4,$0,60`
152			`add $2,$3,$4`
153			`sb $2,0($20) #A`
154			`sb $23,0($20)`
155			`sb $21,0($20)`
156
157	4	ja_rd	`# DIV tests, skip conditionally`
158			`.ifgt TEST_DIV`
159	2	ja_rd
160			`#e: DIV`
161			`ori $2,$0,'e'`
162			`sb $2,0($20)`
163			`ori $2,$0,65*117+41`
164			`ori $3,$0,117`
165			`div $2,$3`
166			`nop`
167			`mflo $4`
168			`sb $4,0($20) #A`
169			`mfhi $4`
170			`addi $4,$4,66-41`
171			`sb $4,0($20) #B`
172			`li $2,-67*19`
173			`ori $3,$0,19`
174			`div $2,$3`
175			`nop`
176			`mflo $4`
177			`sub $4,$0,$4`
178			`sb $4,0($20) #C`
179			`ori $2,$0,68*23`
180			`li $3,-23`
181			`div $2,$3`
182			`nop`
183			`mflo $4`
184			`sub $4,$0,$4`
185			`sb $4,0($20) #D`
186			`li $2,-69*13`
187			`li $3,-13`
188			`div $2,$3`
189			`mflo $4`
190			`sb $4,0($20) #E`
191			`sb $23,0($20)`
192			`sb $21,0($20)`
193
194			`#f: DIVU`
195			`ori $2,$0,'f'`
196			`sb $2,0($20)`
197			`ori $2,$0,65*13`
198			`ori $3,$0,13`
199			`divu $2,$3`
200			`nop`
201			`mflo $4`
202			`sb $4,0($20) #A`
203			`sb $23,0($20)`
204			`sb $21,0($20)`
205	4	ja_rd	`.endif`
206	2	ja_rd
207	4	ja_rd	`# MUL tests, skip conditionally`
208			`.ifgt TEST_MUL`
209	2	ja_rd
210			`#g: MULT`
211			`ori $2,$0,'g'`
212			`sb $2,0($20)`
213			`ori $2,$0,5`
214			`ori $3,$0,13`
215			`mult $2,$3`
216			`nop`
217			`mflo $4`
218			`sb $4,0($20) #A`
219			`li $2,-5`
220			`ori $3,$0,13`
221			`mult $2,$3`
222			`mfhi $5`
223			`mflo $4`
224			`sub $4,$0,$4`
225			`addu $4,$4,$5`
226			`addi $4,$4,2`
227			`sb $4,0($20) #B`
228			`ori $2,$0,5`
229			`li $3,-13`
230			`mult $2,$3`
231			`mfhi $5`
232			`mflo $4`
233			`sub $4,$0,$4`
234			`addu $4,$4,$5`
235			`addi $4,$4,3`
236			`sb $4,0($20) #C`
237			`li $2,-5`
238			`li $3,-13`
239			`mult $2,$3`
240			`mfhi $5`
241			`mflo $4`
242			`addu $4,$4,$5`
243			`addi $4,$4,3`
244			`sb $4,0($20) #D`
245			`lui $4,0xfe98`
246			`ori $4,$4,0x62e5`
247			`lui $5,0x6`
248			`ori $5,0x8db8`
249			`mult $4,$5`
250			`mfhi $6`
251			`addiu $7,$6,2356+1+'E' #E`
252			`sb $7,0($20)`
253			`sb $23,0($20)`
254			`sb $21,0($20)`
255
256			`#h: MULTU`
257			`ori $2,$0,'h'`
258			`sb $2,0($20)`
259			`ori $2,$0,5`
260			`ori $3,$0,13`
261			`multu $2,$3`
262			`nop`
263			`mflo $4`
264			`sb $4,0($20) #A`
265			`sb $23,0($20)`
266			`sb $21,0($20)`
267	4	ja_rd	`.endif`
268	2	ja_rd
269			`#i: SLT`
270			`ori $2,$0,'i'`
271			`sb $2,0($20)`
272			`ori $2,$0,10`
273			`ori $3,$0,12`
274			`slt $4,$2,$3`
275			`addi $5,$4,64`
276			`sb $5,0($20) #A`
277			`slt $4,$3,$2`
278			`addi $5,$4,66`
279			`sb $5,0($20) #B`
280			`li $2,0xfffffff0`
281			`slt $4,$2,$3`
282			`addi $5,$4,66`
283			`sb $5,0($20) #C`
284			`slt $4,$3,$2`
285			`addi $5,$4,68`
286			`sb $5,0($20) #D`
287			`li $3,0xffffffff`
288			`slt $4,$2,$3`
289			`addi $5,$4,68`
290			`sb $5,0($20) #E`
291			`slt $4,$3,$2`
292			`addi $5,$4,70`
293			`sb $5,0($20) #F`
294			`sb $23,0($20)`
295			`sb $21,0($20)`
296
297			`#j: SLTI`
298			`ori $2,$0,'j'`
299			`sb $2,0($20)`
300			`ori $2,$0,10`
301			`slti $4,$2,12`
302			`addi $5,$4,64`
303			`sb $5,0($20) #A`
304			`slti $4,$2,8`
305			`addi $5,$4,66`
306			`sb $5,0($20) #B`
307			`sb $23,0($20)`
308			`sb $21,0($20)`
309
310			`#k: SLTIU`
311			`ori $2,$0,'k'`
312			`sb $2,0($20)`
313			`ori $2,$0,10`
314			`sltiu $4,$2,12`
315			`addi $5,$4,64`
316			`sb $5,0($20) #A`
317			`sltiu $4,$2,8`
318			`addi $5,$4,66`
319			`sb $5,0($20) #B`
320			`sb $23,0($20)`
321			`sb $21,0($20)`
322
323			`#l: SLTU`
324			`ori $2,$0,'l'`
325			`sb $2,0($20)`
326			`ori $2,$0,10`
327			`ori $3,$0,12`
328			`slt $4,$2,$3`
329			`addi $5,$4,64`
330			`sb $5,0($20) #A`
331			`slt $4,$3,$2`
332			`addi $5,$4,66`
333			`sb $5,0($20) #B`
334			`sb $23,0($20)`
335			`sb $21,0($20)`
336
337			`#m: SUB`
338			`ori $2,$0,'m'`
339			`sb $2,0($20)`
340			`ori $3,$0,70`
341			`ori $4,$0,5`
342			`sub $2,$3,$4`
343			`sb $2,0($20) #A`
344			`sb $23,0($20)`
345			`sb $21,0($20)`
346
347			`#n: SUBU`
348			`ori $2,$0,'n'`
349			`sb $2,0($20)`
350			`ori $3,$0,70`
351			`ori $4,$0,5`
352			`sub $2,$3,$4`
353			`sb $2,0($20) #A`
354			`sb $23,0($20)`
355			`sb $21,0($20)`
356
357			`######################################`
358			`#Branch and Jump Instructions`
359			`######################################`
360			`BranchTest:`
361			`ori $2,$0,'B'`
362			`sb $2,0($20)`
363			`ori $2,$0,'r'`
364			`sb $2,0($20)`
365			`ori $2,$0,'a'`
366			`sb $2,0($20)`
367			`ori $2,$0,'n'`
368			`sb $2,0($20)`
369			`ori $2,$0,'c'`
370			`sb $2,0($20)`
371			`ori $2,$0,'h'`
372			`sb $2,0($20)`
373			`sb $23,0($20)`
374			`sb $21,0($20)`
375
376			`#a: B`
377			`ori $2,$0,'a'`
378			`sb $2,0($20)`
379			`ori $10,$0,'A'`
380			`ori $11,$0,'B'`
381			`b $B1`
382			`sb $10,0($20)`
383			`sb $22,0($20)`
384			`$B1:`
385			`sb $11,0($20)`
386			`sb $23,0($20)`
387			`sb $21,0($20)`
388
389			`#b: BAL`
390			`ori $2,$0,'b'`
391			`sb $2,0($20)`
392			`ori $10,$0,'A'`
393			`ori $11,$0,'B'`
394			`ori $12,$0,'C'`
395			`ori $13,$0,'D'`
396			`ori $14,$0,'E'`
397			`ori $15,$0,'X'`
398			`bal $BAL1`
399			`sb $10,0($20)`
400			`sb $13,0($20)`
401			`b $BAL2`
402			`sb $14,0($20)`
403			`sb $15,0($20)`
404			`$BAL1:`
405			`sb $11,0($20)`
406			`jr $31`
407			`sb $12,0($20)`
408			`sb $22,0($20)`
409			`$BAL2:`
410			`sb $23,0($20)`
411			`sb $21,0($20)`
412
413			`#c: BEQ`
414			`ori $2,$0,'c'`
415			`sb $2,0($20)`
416			`ori $10,$0,'A'`
417			`ori $11,$0,'B'`
418			`ori $12,$0,'C'`
419			`ori $13,$0,'D'`
420			`ori $2,$0,100`
421			`ori $3,$0,123`
422			`ori $4,$0,123`
423			`beq $2,$3,$BEQ1`
424			`sb $10,0($20)`
425			`sb $11,0($20)`
426			`beq $3,$4,$BEQ1`
427			`sb $12,0($20)`
428			`sb $22,0($20)`
429			`$BEQ1:`
430			`sb $13,0($20)`
431			`sb $23,0($20)`
432			`sb $21,0($20)`
433
434			`#d: BGEZ`
435			`ori $2,$0,'d'`
436			`sb $2,0($20)`
437			`ori $10,$0,'A'`
438			`ori $11,$0,'B'`
439			`ori $12,$0,'C'`
440			`ori $13,$0,'D'`
441			`or $15,$0,'X'`
442			`ori $2,$0,100`
443			`li $3,0xffff1234`
444			`ori $4,$0,123`
445			`bgez $3,$BGEZ1`
446			`sb $10,0($20)`
447			`sb $11,0($20)`
448			`bgez $2,$BGEZ1`
449			`sb $12,0($20)`
450			`sb $22,0($20)`
451			`$BGEZ1:`
452			`bgez $0,$BGEZ2`
453			`nop`
454			`sb $15,0($20)`
455			`$BGEZ2:`
456			`sb $13,0($20)`
457			`sb $23,0($20)`
458			`sb $21,0($20)`
459
460			`#e: BGEZAL`
461			`ori $2,$0,'e'`
462			`sb $2,0($20)`
463			`ori $10,$0,'A'`
464			`ori $11,$0,'B'`
465			`ori $12,$0,'C'`
466			`ori $13,$0,'D'`
467			`ori $14,$0,'E'`
468			`ori $15,$0,'X'`
469			`li $3,0xffff1234`
470			`bgezal $3,$BGEZAL1`
471			`nop`
472			`sb $10,0($20)`
473			`bgezal $0,$BGEZAL1`
474			`nop`
475			`sb $13,0($20)`
476			`b $BGEZAL2`
477			`sb $14,0($20)`
478			`sb $15,0($20)`
479			`$BGEZAL1:`
480			`sb $11,0($20)`
481			`jr $31`
482			`sb $12,0($20)`
483			`sb $22,0($20)`
484			`$BGEZAL2:`
485			`sb $23,0($20)`
486			`sb $21,0($20)`
487
488			`#f: BGTZ`
489			`ori $2,$0,'f'`
490			`sb $2,0($20)`
491			`ori $10,$0,'A'`
492			`ori $11,$0,'B'`
493			`ori $12,$0,'C'`
494			`ori $13,$0,'D'`
495			`ori $2,$0,100`
496			`li $3,0xffff1234`
497			`bgtz $3,$BGTZ1`
498			`sb $10,0($20)`
499			`sb $11,0($20)`
500			`bgtz $2,$BGTZ1`
501			`sb $12,0($20)`
502			`sb $22,0($20)`
503			`$BGTZ1:`
504			`sb $13,0($20)`
505			`sb $23,0($20)`
506			`sb $21,0($20)`
507
508			`#g: BLEZ`
509			`ori $2,$0,'g'`
510			`sb $2,0($20)`
511			`ori $10,$0,'A'`
512			`ori $11,$0,'B'`
513			`ori $12,$0,'C'`
514			`ori $13,$0,'D'`
515			`ori $2,$0,100`
516			`li $3,0xffff1234`
517			`blez $2,$BLEZ1`
518			`sb $10,0($20)`
519			`sb $11,0($20)`
520			`blez $3,$BLEZ1`
521			`sb $12,0($20)`
522			`sb $22,0($20)`
523			`$BLEZ1:`
524			`blez $0,$BLEZ2`
525			`nop`
526			`sb $22,0($20)`
527			`$BLEZ2:`
528			`sb $13,0($20)`
529			`sb $23,0($20)`
530			`sb $21,0($20)`
531
532			`#h: BLTZ`
533			`ori $2,$0,'h'`
534			`sb $2,0($20)`
535			`ori $10,$0,'A'`
536			`ori $11,$0,'B'`
537			`ori $12,$0,'C'`
538			`ori $13,$0,'D'`
539			`ori $14,$0,'E'`
540			`ori $2,$0,100`
541			`li $3,0xffff1234`
542			`ori $4,$0,0`
543			`bltz $2,$BLTZ1`
544			`sb $10,0($20)`
545			`sb $11,0($20)`
546			`bltz $3,$BLTZ1`
547			`sb $12,0($20)`
548			`sb $22,0($20)`
549			`$BLTZ1:`
550			`bltz $4,$BLTZ2`
551			`nop`
552			`sb $13,0($20)`
553			`$BLTZ2:`
554			`sb $14,0($20)`
555			`sb $23,0($20)`
556			`sb $21,0($20)`
557
558			`#i: BLTZAL`
559			`ori $2,$0,'i'`
560			`sb $2,0($20)`
561			`ori $10,$0,'A'`
562			`ori $11,$0,'B'`
563			`ori $12,$0,'C'`
564			`ori $13,$0,'D'`
565			`ori $14,$0,'E'`
566			`ori $15,$0,'X'`
567			`li $3,0xffff1234`
568			`bltzal $0,$BLTZAL1`
569			`nop`
570			`sb $10,0($20)`
571			`bltzal $3,$BLTZAL1`
572			`nop`
573			`sb $13,0($20)`
574			`b $BLTZAL2`
575			`sb $14,0($20)`
576			`sb $15,0($20)`
577			`$BLTZAL1:`
578			`sb $11,0($20)`
579			`jr $31`
580			`sb $12,0($20)`
581			`sb $22,0($20)`
582			`$BLTZAL2:`
583			`sb $23,0($20)`
584			`sb $21,0($20)`
585
586			`#j: BNE`
587			`ori $2,$0,'j'`
588			`sb $2,0($20)`
589			`ori $10,$0,'A'`
590			`ori $11,$0,'B'`
591			`ori $12,$0,'C'`
592			`ori $13,$0,'D'`
593			`ori $2,$0,100`
594			`ori $3,$0,123`
595			`ori $4,$0,123`
596			`bne $3,$4,$BNE1`
597			`sb $10,0($20)`
598			`sb $11,0($20)`
599			`bne $2,$3,$BNE1`
600			`sb $12,0($20)`
601			`sb $22,0($20)`
602			`$BNE1:`
603			`sb $13,0($20)`
604			`sb $23,0($20)`
605			`sb $21,0($20)`
606
607			`#k: J`
608			`ori $2,$0,'k'`
609			`sb $2,0($20)`
610			`ori $10,$0,'A'`
611			`ori $11,$0,'B'`
612			`ori $15,$0,'X'`
613			`j $J1`
614			`sb $10,0($20)`
615			`sb $15,0($20)`
616			`$J1:`
617			`sb $11,0($20)`
618			`sb $23,0($20)`
619			`sb $21,0($20)`
620
621			`#l: JAL`
622			`ori $2,$0,'l'`
623			`sb $2,0($20)`
624			`ori $10,$0,'A'`
625			`ori $11,$0,'B'`
626			`ori $12,$0,'C'`
627			`ori $13,$0,'D'`
628			`ori $14,$0,'E'`
629			`ori $15,$0,'X'`
630			`jal $JAL1`
631			`sb $10,0($20)`
632			`sb $13,0($20)`
633			`b $JAL2`
634			`sb $14,0($20)`
635			`sb $15,0($20)`
636			`$JAL1:`
637			`sb $11,0($20)`
638			`jr $31`
639			`sb $12,0($20)`
640			`sb $22,0($20)`
641			`$JAL2:`
642			`sb $23,0($20)`
643			`sb $21,0($20)`
644
645			`#m: JALR`
646			`ori $2,$0,'m'`
647			`sb $2,0($20)`
648			`ori $10,$0,'A'`
649			`ori $11,$0,'B'`
650			`ori $12,$0,'C'`
651			`ori $13,$0,'D'`
652			`ori $14,$0,'E'`
653			`ori $15,$0,'X'`
654			`la $3,$JALR1`
655			`jalr $3`
656			`sb $10,0($20)`
657			`sb $13,0($20)`
658			`b $JALR2`
659			`sb $14,0($20)`
660			`sb $15,0($20)`
661			`$JALR1:`
662			`sb $11,0($20)`
663			`jr $31`
664			`sb $12,0($20)`
665			`sb $22,0($20)`
666			`$JALR2:`
667			`sb $23,0($20)`
668			`sb $21,0($20)`
669
670			`#n: JR`
671			`ori $2,$0,'n'`
672			`sb $2,0($20)`
673			`ori $10,$0,'A'`
674			`ori $11,$0,'B'`
675			`ori $15,$0,'X'`
676			`la $3,$JR1`
677			`jr $3`
678			`sb $10,0($20)`
679			`sb $15,0($20)`
680			`$JR1:`
681			`sb $11,0($20)`
682			`sb $23,0($20)`
683			`sb $21,0($20)`
684
685			`#o: NOP`
686			`ori $2,$0,'o'`
687			`sb $2,0($20)`
688			`ori $2,$0,65`
689			`nop`
690			`sb $2,0($20)`
691			`sb $23,0($20)`
692			`sb $21,0($20)`
693
694			`# b LoadTest`
695
696	4	ja_rd
697	2	ja_rd	`BreakTest:`
698	4	ja_rd	`.ifgt TEST_BREAK`
699	2	ja_rd	`#p: BREAK`
700	4	ja_rd	`ori $2,$0,'p' # check if it jumps to break address and comes back`
701	2	ja_rd	`sb $2,0($20)`
702			`ori $2,$0,'z'`
703			`ori $4,$0,59`
704			`break 0`
705			`addi $4,$4,1`
706			`sb $4,0($20)`
707	4	ja_rd
708			`break 0 # check if load instruction is aborted (@log)`
709			`lb $2,16($2)`
710
711			`break 0 # check if jump instruction is aborted (@log)`
712			`j break_jump_test`
713			`add $4,$4,5`
714
715			`break_jump_test:`
716			`add $4,$4,1 # make sure the jump shows in the log (@log)`
717
718	2	ja_rd	`sb $23,0($20)`
719	4	ja_rd	`sb $21,0($20)`
720			`.endif`
721	2	ja_rd
722			`#q: SYSCALL`
723			`ori $2,$0,'q'`
724			`sb $2,0($20)`
725			`ori $4,$0,61`
726			`syscall 0`
727			`addi $4,$4,-1`
728			`sb $4,0($20)`
729			`sb $23,0($20)`
730			`sb $21,0($20)`
731
732
733			`######################################`
734			`#Load, Store, and Memory Control Instructions`
735			`######################################`
736			`LoadTest:`
737			`ori $2,$0,'L'`
738			`sb $2,0($20)`
739			`ori $2,$0,'o'`
740			`sb $2,0($20)`
741			`ori $2,$0,'a'`
742			`sb $2,0($20)`
743			`ori $2,$0,'d'`
744			`sb $2,0($20)`
745			`sb $23,0($20)`
746			`sb $21,0($20)`
747
748			`#a: LB`
749			`ori $2,$0,'a'`
750			`sb $2,0($20)`
751			`or $2,$0,$24`
752			`li $3,0x414243fc`
753			`sw $3,16($2) # 16($2) = 0x414243fc`
754			`lb $4,16($2) # $4 = 0x41`
755			`sb $4,0($20) # UART = 0x41`
756			`lb $4,17($2) # $4 = 0x42`
757			`nop`
758			`sb $4,0($20) # UART = 0x42`
759			`lb $4,18($2) # $4 = 0x43`
760			`nop`
761			`sb $4,0($20) # UART = 0x43`
762			`lb $2,19($2) # $2 = 0xffff.fffc`
763			`nop`
764			`sra $3,$2,8 # $3 = 0xffff.ffff`
765			`addi $3,$3,0x45 # $3 = 0x44`
766			`sb $3,0($20) # UART = 0x44`
767			`addi $2,$2,0x49 # $4 = 0x45, overflow`
768			`sb $2,0($20) # UART = 0x45`
769			`sb $23,0($20) # UART = CR`
770			`sb $21,0($20) # UART = LF`
771
772			`#b: LBU`
773			`ori $2,$0,'b'`
774			`sb $2,0($20)`
775			`or $2,$0,$24`
776			`li $3,0x41424344`
777			`sw $3,16($2)`
778			`lb $4,16($2)`
779			`sb $4,0($20)`
780			`lb $4,17($2)`
781			`sb $4,0($20)`
782			`lb $4,18($2)`
783			`sb $4,0($20)`
784			`lb $2,19($2)`
785			`sb $2,0($20)`
786			`sb $23,0($20)`
787			`sb $21,0($20)`
788
789			`#c: LH`
790			`ori $2,$0,'c'`
791			`sb $2,0($20)`
792			`or $2,$0,$24`
793			`li $3,0x00410042`
794			`sw $3,16($2)`
795			`lh $4,16($2)`
796			`sb $4,0($20)`
797			`lh $2,18($2)`
798			`sb $2,0($20)`
799			`sb $23,0($20)`
800			`sb $21,0($20)`
801
802			`#d: LHU`
803			`ori $2,$0,'d'`
804			`sb $2,0($20)`
805			`or $2,$0,$24`
806			`li $3,0x00410042`
807			`sw $3,16($2)`
808			`lh $4,16($2)`
809			`sb $4,0($20)`
810			`lh $2,18($2)`
811			`sb $2,0($20)`
812			`sb $23,0($20)`
813			`sb $21,0($20)`
814
815			`#e: LW`
816			`ori $2,$0,'e'`
817			`sb $2,0($20)`
818			`or $2,$0,$24`
819			`li $3,'A'`
820			`sw $3,16($2)`
821			`ori $3,$0,0`
822			`lw $2,16($2)`
823			`sb $2,0($20)`
824			`sb $23,0($20)`
825			`sb $21,0($20)`
826
827			`.ifgt TEST_UNALIGNED_LOADS`
828			`#f: LWL & LWR`
829			`ori $2,$0,'f'`
830			`sb $2,0($20)`
831			`or $2,$0,$24`
832			`li $3,'A'`
833			`sw $3,16($2)`
834			`ori $3,$0,0`
835			`lwl $2,16($2)`
836			`lwr $2,16($2)`
837			`sb $2,0($20)`
838			`sb $23,0($20)`
839			`sb $21,0($20)`
840			`.endif`
841
842			`#g: SB`
843			`ori $2,$0,'g'`
844			`sb $2,0($20)`
845			`ori $2,$0,'A'`
846			`sb $2,0($20)`
847			`sb $23,0($20)`
848			`sb $21,0($20)`
849
850			`#h: SH`
851			`ori $2,$0,'h'`
852			`sb $2,0($20)`
853			`or $4,$0,$24`
854			`ori $2,$0,0x4142`
855			`sh $2,16($4)`
856			`lb $3,16($4)`
857			`sb $3,0($20)`
858			`lb $2,17($4)`
859			`sb $2,0($20)`
860			`sb $23,0($20)`
861			`sb $21,0($20)`
862
863			`#i: SW`
864			`ori $2,$0,'i'`
865			`sb $2,0($20)`
866			`or $2,$0,$24`
867			`li $3,0x41424344`
868			`sw $3,16($2)`
869			`lb $4,16($2)`
870			`sb $4,0($20)`
871			`lb $4,17($2)`
872			`sb $4,0($20)`
873			`lb $4,18($2)`
874			`sb $4,0($20)`
875			`lb $2,19($2)`
876			`sb $2,0($20)`
877			`sb $23,0($20)`
878			`sb $21,0($20)`
879
880			`.ifgt TEST_UNALIGNED_STORES`
881			`#j: SWL & SWR`
882			`ori $2,$0,'j'`
883			`sb $2,0($20)`
884			`or $2,$0,$24`
885			`li $3,0x41424344`
886			`swl $3,16($2)`
887			`swr $3,16($2)`
888			`lb $4,16($2)`
889			`sb $4,0($20)`
890			`lb $4,17($2)`
891			`sb $4,0($20)`
892			`lb $4,18($2)`
893			`sb $4,0($20)`
894			`lb $2,19($2)`
895			`sb $2,0($20)`
896			`sb $23,0($20)`
897			`sb $21,0($20)`
898			`.endif`
899
900			`######################################`
901			`#Logical Instructions`
902			`######################################`
903			`LogicalTest:`
904			`ori $2,$0,'L'`
905			`sb $2,0($20)`
906			`ori $2,$0,'o'`
907			`sb $2,0($20)`
908			`ori $2,$0,'g'`
909			`sb $2,0($20)`
910			`ori $2,$0,'i'`
911			`sb $2,0($20)`
912			`ori $2,$0,'c'`
913			`sb $2,0($20)`
914			`sb $23,0($20)`
915			`sb $21,0($20)`
916
917			`#a: AND`
918			`ori $2,$0,'a'`
919			`sb $2,0($20)`
920			`ori $2,$0,0x0741`
921			`ori $3,$0,0x60f3`
922			`and $4,$2,$3`
923			`sb $4,0($20)`
924			`sb $23,0($20)`
925			`sb $21,0($20)`
926
927			`#b: ANDI`
928			`ori $2,$0,'b'`
929			`sb $2,0($20)`
930			`ori $2,$0,0x0741`
931			`andi $4,$2,0x60f3`
932			`sb $4,0($20)`
933			`sb $23,0($20)`
934			`sb $21,0($20)`
935
936			`#c: LUI`
937			`ori $2,$0,'c'`
938			`sb $2,0($20)`
939			`lui $2,0x41`
940			`srl $3,$2,16`
941			`sb $3,0($20)`
942			`sb $23,0($20)`
943			`sb $21,0($20)`
944
945			`#d: NOR`
946			`ori $2,$0,'d'`
947			`sb $2,0($20)`
948			`li $2,0xf0fff08e`
949			`li $3,0x0f0f0f30`
950			`nor $4,$2,$3`
951			`sb $4,0($20)`
952			`sb $23,0($20)`
953			`sb $21,0($20)`
954
955			`#e: OR`
956			`ori $2,$0,'e'`
957			`sb $2,0($20)`
958			`ori $2,$0,0x40`
959			`ori $3,$0,0x01`
960			`or $4,$2,$3`
961			`sb $4,0($20)`
962			`sb $23,0($20)`
963			`sb $21,0($20)`
964
965			`#f: ORI`
966			`ori $2,$0,'f'`
967			`sb $2,0($20)`
968			`ori $2,$0,0x40`
969			`ori $4,$2,0x01`
970			`sb $4,0($20)`
971			`sb $23,0($20)`
972			`sb $21,0($20)`
973
974			`#g: XOR`
975			`ori $2,$0,'g'`
976			`sb $2,0($20)`
977			`ori $2,$0,0xf043`
978			`ori $3,$0,0xf002`
979			`xor $4,$2,$3`
980			`sb $4,0($20)`
981			`sb $23,0($20)`
982			`sb $21,0($20)`
983
984			`#h: XORI`
985			`ori $2,$0,'h'`
986			`sb $2,0($20)`
987			`ori $2,$0,0xf043`
988			`xor $4,$2,0xf002`
989			`sb $4,0($20)`
990			`sb $23,0($20)`
991			`sb $21,0($20)`
992
993
994			`######################################`
995			`#Move Instructions`
996			`######################################`
997			`MoveTest:`
998			`ori $2,$0,'M'`
999			`sb $2,0($20)`
1000			`ori $2,$0,'o'`
1001			`sb $2,0($20)`
1002			`ori $2,$0,'v'`
1003			`sb $2,0($20)`
1004			`ori $2,$0,'e'`
1005			`sb $2,0($20)`
1006			`sb $23,0($20)`
1007			`sb $21,0($20)`
1008
1009			`#a: MFHI`
1010			`ori $2,$0,'a'`
1011			`sb $2,0($20)`
1012			`ori $2,$0,65`
1013			`mthi $2`
1014			`mfhi $3`
1015			`sb $3,0($20)`
1016			`sb $23,0($20)`
1017			`sb $21,0($20)`
1018
1019			`#b: MFLO`
1020			`ori $2,$0,'b'`
1021			`sb $2,0($20)`
1022			`ori $2,$0,65`
1023			`mtlo $2`
1024			`mflo $3`
1025			`sb $3,0($20)`
1026			`sb $23,0($20)`
1027			`sb $21,0($20)`
1028
1029			`#c: MTHI`
1030			`ori $2,$0,'c'`
1031			`sb $2,0($20)`
1032			`ori $2,$0,65`
1033			`mthi $2`
1034			`mfhi $3`
1035			`sb $3,0($20)`
1036			`sb $23,0($20)`
1037			`sb $21,0($20)`
1038
1039			`#d: MTLO`
1040			`ori $2,$0,'d'`
1041			`sb $2,0($20)`
1042			`ori $2,$0,65`
1043			`mtlo $2`
1044			`mflo $3`
1045			`sb $3,0($20)`
1046			`sb $23,0($20)`
1047			`sb $21,0($20)`
1048
1049
1050			`######################################`
1051			`#Shift Instructions`
1052			`######################################`
1053			`ShiftTest:`
1054			`ori $2,$0,'S'`
1055			`sb $2,0($20)`
1056			`ori $2,$0,'h'`
1057			`sb $2,0($20)`
1058			`ori $2,$0,'i'`
1059			`sb $2,0($20)`
1060			`ori $2,$0,'f'`
1061			`sb $2,0($20)`
1062			`ori $2,$0,'t'`
1063			`sb $2,0($20)`
1064			`sb $23,0($20)`
1065			`sb $21,0($20)`
1066
1067			`#a: SLL`
1068			`ori $2,$0,'a'`
1069			`sb $2,0($20)`
1070			`li $2,0x40414243`
1071			`sll $3,$2,8`
1072			`srl $3,$3,24`
1073			`sb $3,0($20)`
1074			`sb $23,0($20)`
1075			`sb $21,0($20)`
1076
1077			`#b: SLLV`
1078			`ori $2,$0,'b'`
1079			`sb $2,0($20)`
1080			`li $2,0x40414243`
1081			`ori $3,$0,8`
1082			`sllv $3,$2,$3`
1083			`srl $3,$3,24`
1084			`sb $3,0($20)`
1085			`sb $23,0($20)`
1086			`sb $21,0($20)`
1087
1088			`#c: SRA`
1089			`ori $2,$0,'c'`
1090			`sb $2,0($20)`
1091			`li $2,0x40414243`
1092			`sra $3,$2,16`
1093			`sb $3,0($20)`
1094			`li $2,0x84000000`
1095			`sra $3,$2,25`
1096			`sub $3,$3,0x80`
1097			`sb $3,0($20)`
1098			`sb $23,0($20)`
1099			`sb $21,0($20)`
1100
1101			`#d: SRAV`
1102			`ori $2,$0,'d'`
1103			`sb $2,0($20)`
1104			`li $2,0x40414243`
1105			`ori $3,$0,16`
1106			`srav $3,$2,$3`
1107			`sb $3,0($20)`
1108			`ori $3,$0,25`
1109			`li $2,0x84000000`
1110			`srav $3,$2,$3`
1111			`sub $3,$3,0x80`
1112			`sb $3,0($20)`
1113			`sb $23,0($20)`
1114			`sb $21,0($20)`
1115
1116			`#e: SRL`
1117			`ori $2,$0,'e'`
1118			`sb $2,0($20)`
1119			`li $2,0x40414243`
1120			`srl $3,$2,16`
1121			`sb $3,0($20)`
1122			`li $2,0x84000000`
1123			`srl $3,$2,25`
1124			`sb $3,0($20)`
1125			`sb $23,0($20)`
1126			`sb $21,0($20)`
1127
1128			`#f: SRLV`
1129			`ori $2,$0,'f'`
1130			`sb $2,0($20)`
1131			`li $2,0x40414243`
1132			`ori $3,$0,16`
1133			`srlv $4,$2,$3`
1134			`sb $4,0($20)`
1135			`ori $3,$0,25`
1136			`li $2,0x84000000`
1137			`srlv $3,$2,$3`
1138			`sb $3,0($20)`
1139			`sb $23,0($20)`
1140			`sb $21,0($20)`
1141
1142
1143			`ori $2,$0,'D'`
1144			`sb $2,0($20)`
1145			`ori $2,$0,'o'`
1146			`sb $2,0($20)`
1147			`ori $2,$0,'n'`
1148			`sb $2,0($20)`
1149			`ori $2,$0,'e'`
1150			`sb $2,0($20)`
1151			`sb $23,0($20)`
1152			`sb $21,0($20)`
1153
1154
1155			`$DONE:`
1156			`j $DONE`
1157			`nop`
1158
1159			`.set reorder`
1160			`.end entry`
1161

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