URL https://opencores.org/ocsvn/ion/ion/trunk

Subversion Repositories ion

[/] [ion/] [trunk/] [src/] [opcodes/] [opcodes.s] - Blame information for rev 38

Go to most recent revision | Details | Compare with Previous | View Log

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	`# This assembly file tests all of the opcodes supported by the Ion core.`
13	2	ja_rd	`# This test assumes that address 0x20000000 is the UART write register.`
14			`# Successful tests will print out "A" or "AB" or "ABC" or ....`
15			`# Missing letters or letters out of order indicate a failure.`
16	14	ja_rd	`#`
17	2	ja_rd	`#-------------------------------------------------------------------------------`
18	4	ja_rd	`# NOTE: This test bench relies on the simulation logs to catch errors. That is,`
19	38	ja_rd	`# unlike the original Plasma code, this one does not check the test success`
20			`# conditions. Instead, it performs the operations to be tested and relies on you`
21	4	ja_rd	`# 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	14	ja_rd	`.set TEST_DIV, 1 # DIV* instructions`
36			`.set TEST_MUL, 1 # 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`
55
56	29	ja_rd
57			`# Trap handler address`
58			`.org 0x3c`
59			`# We have three trap sources: syscall, break and unimplemented opcode`
60			`# Plus we have to account for a faulty cause code; that's 4 causes`
61			`# Besides, we have to look out for the branch delay flag (BD)`
62			`# We'll just increment $4 by a fixed constant depending on the cause`
63			`# so we will not save any registers (there's no stack anyway)`
64			`InterruptVector:`
65			`mfc0 $k0,$13 # Get trap cause code`
66			`andi $k0,$k0,0x01f`
67			`ori $k1,$zero,0x8 # was it a syscall?`
68			`beq $k0,$k1,trap_syscall`
69			`addi $k1,$k1,0x1 # was it a break?`
70			`beq $k0,$k1,trap_break`
71			`addi $k1,$k1,0x1 # was it a bad opcode?`
72			`bne $k0,$k1,trap_invalid`
73	2	ja_rd	`nop`
74	29	ja_rd
75			`# Unimplemented instruction`
76			`trap_unimplemented:`
77			`j trap_return`
78			`add $4,$4,4`
79	2	ja_rd
80	29	ja_rd	`# Break instruction`
81			`trap_break:`
82			`j trap_return`
83	2	ja_rd	`add $4,$4,5`
84	29	ja_rd
85			`# Syscall instruction`
86			`trap_syscall:`
87			`j trap_return`
88			`add $4,$4,6`
89
90			`# Invalid trap cause code, most likely hardware bug`
91			`trap_invalid:`
92			`j trap_return`
93			`add $4,$4,0xf`
94
95			`trap_return:`
96			`mfc0 $k1,$14 # C0_EPC=14 (Exception PC)`
97			`mfc0 $k0,$13 # Get bit 31 (BD) from C0 cause register`
98			`srl $k0,31`
99			`andi $k0,$k0,1`
100			`bnez $k0,trap_return_delay_slot`
101			`addi $k1,$k1,4 # skip trap instruction`
102			`jr $k1`
103			`nop`
104			`trap_return_delay_slot:`
105			`addi $k1,$k1,4 # skip jump instruction too`
106			`jr $k1 # (we just added 8 to epc)`
107
108
109	2	ja_rd	`StartTest:`
110			`mtc0 $0,$12 # disable interrupts`
111			`lui $20,0x2000 # serial port write address`
112			`ori $21,$0,'\n' # <CR> character`
113			`ori $22,$0,'X' # 'X' letter`
114			`ori $23,$0,'\r'`
115			`ori $24,$0,0x0f80 # temp memory`
116
117			`sb $23,0($20)`
118			`sb $21,0($20)`
119			`sb $23,0($20)`
120			`sb $21,0($20)`
121			`sb $23,0($20)`
122			`sb $21,0($20)`
123			`sb $23,0($20)`
124			`sb $21,0($20)`
125	29	ja_rd
126	2	ja_rd	`######################################`
127			`#Arithmetic Instructions`
128			`######################################`
129			`ArthmeticTest:`
130			`ori $2,$0,'A'`
131			`sb $2,0($20)`
132			`ori $2,$0,'r'`
133			`sb $2,0($20)`
134			`ori $2,$0,'i'`
135			`sb $2,0($20)`
136			`ori $2,$0,'t'`
137			`sb $2,0($20)`
138			`ori $2,$0,'h'`
139			`sb $2,0($20)`
140			`sb $23,0($20)`
141			`sb $21,0($20)`
142
143			`#a: ADD`
144			`ori $2,$0,'a'`
145			`sb $2,0($20)`
146			`ori $3,$0,5`
147			`ori $4,$0,60`
148			`add $2,$3,$4`
149			`sb $2,0($20) #A`
150			`sb $23,0($20)`
151			`sb $21,0($20)`
152
153			`#b: ADDI`
154			`ori $2,$0,'b'`
155			`sb $2,0($20)`
156			`ori $4,$0,60`
157			`addi $2,$4,5`
158			`sb $2,0($20) #A`
159			`sb $23,0($20)`
160			`sb $21,0($20)`
161
162			`#c: ADDIU`
163			`ori $2,$0,'c'`
164			`sb $2,0($20)`
165			`ori $4,$0,50`
166			`addiu $5,$4,15`
167			`sb $5,0($20) #A`
168			`sb $23,0($20)`
169			`sb $21,0($20)`
170
171			`#d: ADDU`
172			`ori $2,$0,'d'`
173			`sb $2,0($20)`
174			`ori $3,$0,5`
175			`ori $4,$0,60`
176			`add $2,$3,$4`
177			`sb $2,0($20) #A`
178			`sb $23,0($20)`
179			`sb $21,0($20)`
180
181	4	ja_rd	`# DIV tests, skip conditionally`
182			`.ifgt TEST_DIV`
183	2	ja_rd
184			`#e: DIV`
185			`ori $2,$0,'e'`
186			`sb $2,0($20)`
187			`ori $2,$0,65*117+41`
188			`ori $3,$0,117`
189			`div $2,$3`
190			`nop`
191			`mflo $4`
192			`sb $4,0($20) #A`
193			`mfhi $4`
194			`addi $4,$4,66-41`
195			`sb $4,0($20) #B`
196			`li $2,-67*19`
197			`ori $3,$0,19`
198			`div $2,$3`
199			`nop`
200			`mflo $4`
201			`sub $4,$0,$4`
202			`sb $4,0($20) #C`
203			`ori $2,$0,68*23`
204			`li $3,-23`
205			`div $2,$3`
206			`nop`
207			`mflo $4`
208			`sub $4,$0,$4`
209			`sb $4,0($20) #D`
210			`li $2,-69*13`
211			`li $3,-13`
212			`div $2,$3`
213			`mflo $4`
214			`sb $4,0($20) #E`
215			`sb $23,0($20)`
216			`sb $21,0($20)`
217
218			`#f: DIVU`
219			`ori $2,$0,'f'`
220			`sb $2,0($20)`
221			`ori $2,$0,65*13`
222			`ori $3,$0,13`
223			`divu $2,$3`
224			`nop`
225			`mflo $4`
226			`sb $4,0($20) #A`
227			`sb $23,0($20)`
228			`sb $21,0($20)`
229	4	ja_rd	`.endif`
230	2	ja_rd
231	4	ja_rd	`# MUL tests, skip conditionally`
232			`.ifgt TEST_MUL`
233	2	ja_rd
234			`#g: MULT`
235			`ori $2,$0,'g'`
236			`sb $2,0($20)`
237			`ori $2,$0,5`
238			`ori $3,$0,13`
239			`mult $2,$3`
240			`nop`
241			`mflo $4`
242			`sb $4,0($20) #A`
243			`li $2,-5`
244			`ori $3,$0,13`
245			`mult $2,$3`
246			`mfhi $5`
247			`mflo $4`
248			`sub $4,$0,$4`
249			`addu $4,$4,$5`
250			`addi $4,$4,2`
251			`sb $4,0($20) #B`
252			`ori $2,$0,5`
253			`li $3,-13`
254			`mult $2,$3`
255			`mfhi $5`
256			`mflo $4`
257			`sub $4,$0,$4`
258			`addu $4,$4,$5`
259			`addi $4,$4,3`
260			`sb $4,0($20) #C`
261			`li $2,-5`
262			`li $3,-13`
263			`mult $2,$3`
264			`mfhi $5`
265			`mflo $4`
266			`addu $4,$4,$5`
267			`addi $4,$4,3`
268			`sb $4,0($20) #D`
269			`lui $4,0xfe98`
270			`ori $4,$4,0x62e5`
271			`lui $5,0x6`
272			`ori $5,0x8db8`
273			`mult $4,$5`
274			`mfhi $6`
275			`addiu $7,$6,2356+1+'E' #E`
276			`sb $7,0($20)`
277			`sb $23,0($20)`
278			`sb $21,0($20)`
279
280			`#h: MULTU`
281			`ori $2,$0,'h'`
282			`sb $2,0($20)`
283			`ori $2,$0,5`
284			`ori $3,$0,13`
285			`multu $2,$3`
286			`nop`
287			`mflo $4`
288			`sb $4,0($20) #A`
289			`sb $23,0($20)`
290			`sb $21,0($20)`
291	4	ja_rd	`.endif`
292	2	ja_rd
293			`#i: SLT`
294			`ori $2,$0,'i'`
295			`sb $2,0($20)`
296			`ori $2,$0,10`
297			`ori $3,$0,12`
298			`slt $4,$2,$3`
299			`addi $5,$4,64`
300			`sb $5,0($20) #A`
301			`slt $4,$3,$2`
302			`addi $5,$4,66`
303			`sb $5,0($20) #B`
304			`li $2,0xfffffff0`
305			`slt $4,$2,$3`
306			`addi $5,$4,66`
307			`sb $5,0($20) #C`
308			`slt $4,$3,$2`
309			`addi $5,$4,68`
310			`sb $5,0($20) #D`
311			`li $3,0xffffffff`
312			`slt $4,$2,$3`
313			`addi $5,$4,68`
314			`sb $5,0($20) #E`
315			`slt $4,$3,$2`
316			`addi $5,$4,70`
317			`sb $5,0($20) #F`
318			`sb $23,0($20)`
319			`sb $21,0($20)`
320
321			`#j: SLTI`
322			`ori $2,$0,'j'`
323			`sb $2,0($20)`
324			`ori $2,$0,10`
325			`slti $4,$2,12`
326			`addi $5,$4,64`
327			`sb $5,0($20) #A`
328			`slti $4,$2,8`
329			`addi $5,$4,66`
330			`sb $5,0($20) #B`
331			`sb $23,0($20)`
332			`sb $21,0($20)`
333
334			`#k: SLTIU`
335			`ori $2,$0,'k'`
336			`sb $2,0($20)`
337			`ori $2,$0,10`
338			`sltiu $4,$2,12`
339			`addi $5,$4,64`
340			`sb $5,0($20) #A`
341			`sltiu $4,$2,8`
342			`addi $5,$4,66`
343			`sb $5,0($20) #B`
344			`sb $23,0($20)`
345			`sb $21,0($20)`
346
347			`#l: SLTU`
348			`ori $2,$0,'l'`
349			`sb $2,0($20)`
350			`ori $2,$0,10`
351			`ori $3,$0,12`
352			`slt $4,$2,$3`
353			`addi $5,$4,64`
354			`sb $5,0($20) #A`
355			`slt $4,$3,$2`
356			`addi $5,$4,66`
357			`sb $5,0($20) #B`
358			`sb $23,0($20)`
359			`sb $21,0($20)`
360
361			`#m: SUB`
362			`ori $2,$0,'m'`
363			`sb $2,0($20)`
364			`ori $3,$0,70`
365			`ori $4,$0,5`
366			`sub $2,$3,$4`
367			`sb $2,0($20) #A`
368			`sb $23,0($20)`
369			`sb $21,0($20)`
370
371			`#n: SUBU`
372			`ori $2,$0,'n'`
373			`sb $2,0($20)`
374			`ori $3,$0,70`
375			`ori $4,$0,5`
376			`sub $2,$3,$4`
377			`sb $2,0($20) #A`
378			`sb $23,0($20)`
379			`sb $21,0($20)`
380
381			`######################################`
382			`#Branch and Jump Instructions`
383			`######################################`
384			`BranchTest:`
385			`ori $2,$0,'B'`
386			`sb $2,0($20)`
387			`ori $2,$0,'r'`
388			`sb $2,0($20)`
389			`ori $2,$0,'a'`
390			`sb $2,0($20)`
391			`ori $2,$0,'n'`
392			`sb $2,0($20)`
393			`ori $2,$0,'c'`
394			`sb $2,0($20)`
395			`ori $2,$0,'h'`
396			`sb $2,0($20)`
397			`sb $23,0($20)`
398			`sb $21,0($20)`
399
400			`#a: B`
401			`ori $2,$0,'a'`
402			`sb $2,0($20)`
403			`ori $10,$0,'A'`
404			`ori $11,$0,'B'`
405			`b $B1`
406			`sb $10,0($20)`
407			`sb $22,0($20)`
408			`$B1:`
409			`sb $11,0($20)`
410			`sb $23,0($20)`
411			`sb $21,0($20)`
412
413			`#b: BAL`
414			`ori $2,$0,'b'`
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 $14,$0,'E'`
421			`ori $15,$0,'X'`
422			`bal $BAL1`
423			`sb $10,0($20)`
424			`sb $13,0($20)`
425			`b $BAL2`
426			`sb $14,0($20)`
427			`sb $15,0($20)`
428			`$BAL1:`
429			`sb $11,0($20)`
430			`jr $31`
431			`sb $12,0($20)`
432			`sb $22,0($20)`
433			`$BAL2:`
434			`sb $23,0($20)`
435			`sb $21,0($20)`
436
437			`#c: BEQ`
438			`ori $2,$0,'c'`
439			`sb $2,0($20)`
440			`ori $10,$0,'A'`
441			`ori $11,$0,'B'`
442			`ori $12,$0,'C'`
443			`ori $13,$0,'D'`
444			`ori $2,$0,100`
445			`ori $3,$0,123`
446			`ori $4,$0,123`
447			`beq $2,$3,$BEQ1`
448			`sb $10,0($20)`
449			`sb $11,0($20)`
450			`beq $3,$4,$BEQ1`
451			`sb $12,0($20)`
452			`sb $22,0($20)`
453			`$BEQ1:`
454			`sb $13,0($20)`
455			`sb $23,0($20)`
456			`sb $21,0($20)`
457
458			`#d: BGEZ`
459			`ori $2,$0,'d'`
460			`sb $2,0($20)`
461			`ori $10,$0,'A'`
462			`ori $11,$0,'B'`
463			`ori $12,$0,'C'`
464			`ori $13,$0,'D'`
465			`or $15,$0,'X'`
466			`ori $2,$0,100`
467			`li $3,0xffff1234`
468			`ori $4,$0,123`
469			`bgez $3,$BGEZ1`
470			`sb $10,0($20)`
471			`sb $11,0($20)`
472			`bgez $2,$BGEZ1`
473			`sb $12,0($20)`
474			`sb $22,0($20)`
475			`$BGEZ1:`
476			`bgez $0,$BGEZ2`
477			`nop`
478			`sb $15,0($20)`
479			`$BGEZ2:`
480			`sb $13,0($20)`
481			`sb $23,0($20)`
482			`sb $21,0($20)`
483
484			`#e: BGEZAL`
485			`ori $2,$0,'e'`
486			`sb $2,0($20)`
487			`ori $10,$0,'A'`
488			`ori $11,$0,'B'`
489			`ori $12,$0,'C'`
490			`ori $13,$0,'D'`
491			`ori $14,$0,'E'`
492			`ori $15,$0,'X'`
493			`li $3,0xffff1234`
494			`bgezal $3,$BGEZAL1`
495			`nop`
496			`sb $10,0($20)`
497			`bgezal $0,$BGEZAL1`
498			`nop`
499			`sb $13,0($20)`
500			`b $BGEZAL2`
501			`sb $14,0($20)`
502			`sb $15,0($20)`
503			`$BGEZAL1:`
504			`sb $11,0($20)`
505			`jr $31`
506			`sb $12,0($20)`
507			`sb $22,0($20)`
508			`$BGEZAL2:`
509			`sb $23,0($20)`
510			`sb $21,0($20)`
511
512			`#f: BGTZ`
513			`ori $2,$0,'f'`
514			`sb $2,0($20)`
515			`ori $10,$0,'A'`
516			`ori $11,$0,'B'`
517			`ori $12,$0,'C'`
518			`ori $13,$0,'D'`
519			`ori $2,$0,100`
520			`li $3,0xffff1234`
521			`bgtz $3,$BGTZ1`
522			`sb $10,0($20)`
523			`sb $11,0($20)`
524			`bgtz $2,$BGTZ1`
525			`sb $12,0($20)`
526			`sb $22,0($20)`
527			`$BGTZ1:`
528			`sb $13,0($20)`
529			`sb $23,0($20)`
530			`sb $21,0($20)`
531
532			`#g: BLEZ`
533			`ori $2,$0,'g'`
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 $2,$0,100`
540			`li $3,0xffff1234`
541			`blez $2,$BLEZ1`
542			`sb $10,0($20)`
543			`sb $11,0($20)`
544			`blez $3,$BLEZ1`
545			`sb $12,0($20)`
546			`sb $22,0($20)`
547			`$BLEZ1:`
548			`blez $0,$BLEZ2`
549			`nop`
550			`sb $22,0($20)`
551			`$BLEZ2:`
552			`sb $13,0($20)`
553			`sb $23,0($20)`
554			`sb $21,0($20)`
555
556			`#h: BLTZ`
557			`ori $2,$0,'h'`
558			`sb $2,0($20)`
559			`ori $10,$0,'A'`
560			`ori $11,$0,'B'`
561			`ori $12,$0,'C'`
562			`ori $13,$0,'D'`
563			`ori $14,$0,'E'`
564			`ori $2,$0,100`
565			`li $3,0xffff1234`
566			`ori $4,$0,0`
567			`bltz $2,$BLTZ1`
568			`sb $10,0($20)`
569			`sb $11,0($20)`
570			`bltz $3,$BLTZ1`
571			`sb $12,0($20)`
572			`sb $22,0($20)`
573			`$BLTZ1:`
574			`bltz $4,$BLTZ2`
575			`nop`
576			`sb $13,0($20)`
577			`$BLTZ2:`
578			`sb $14,0($20)`
579			`sb $23,0($20)`
580			`sb $21,0($20)`
581
582			`#i: BLTZAL`
583			`ori $2,$0,'i'`
584			`sb $2,0($20)`
585			`ori $10,$0,'A'`
586			`ori $11,$0,'B'`
587			`ori $12,$0,'C'`
588			`ori $13,$0,'D'`
589			`ori $14,$0,'E'`
590			`ori $15,$0,'X'`
591			`li $3,0xffff1234`
592			`bltzal $0,$BLTZAL1`
593			`nop`
594			`sb $10,0($20)`
595			`bltzal $3,$BLTZAL1`
596			`nop`
597			`sb $13,0($20)`
598			`b $BLTZAL2`
599			`sb $14,0($20)`
600			`sb $15,0($20)`
601			`$BLTZAL1:`
602			`sb $11,0($20)`
603			`jr $31`
604			`sb $12,0($20)`
605			`sb $22,0($20)`
606			`$BLTZAL2:`
607			`sb $23,0($20)`
608			`sb $21,0($20)`
609
610			`#j: BNE`
611			`ori $2,$0,'j'`
612			`sb $2,0($20)`
613			`ori $10,$0,'A'`
614			`ori $11,$0,'B'`
615			`ori $12,$0,'C'`
616			`ori $13,$0,'D'`
617			`ori $2,$0,100`
618			`ori $3,$0,123`
619			`ori $4,$0,123`
620			`bne $3,$4,$BNE1`
621			`sb $10,0($20)`
622			`sb $11,0($20)`
623			`bne $2,$3,$BNE1`
624			`sb $12,0($20)`
625			`sb $22,0($20)`
626			`$BNE1:`
627			`sb $13,0($20)`
628			`sb $23,0($20)`
629			`sb $21,0($20)`
630
631			`#k: J`
632			`ori $2,$0,'k'`
633			`sb $2,0($20)`
634			`ori $10,$0,'A'`
635			`ori $11,$0,'B'`
636			`ori $15,$0,'X'`
637			`j $J1`
638			`sb $10,0($20)`
639			`sb $15,0($20)`
640			`$J1:`
641			`sb $11,0($20)`
642			`sb $23,0($20)`
643			`sb $21,0($20)`
644
645			`#l: JAL`
646			`ori $2,$0,'l'`
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			`jal $JAL1`
655			`sb $10,0($20)`
656			`sb $13,0($20)`
657			`b $JAL2`
658			`sb $14,0($20)`
659			`sb $15,0($20)`
660			`$JAL1:`
661			`sb $11,0($20)`
662			`jr $31`
663			`sb $12,0($20)`
664			`sb $22,0($20)`
665			`$JAL2:`
666			`sb $23,0($20)`
667			`sb $21,0($20)`
668
669			`#m: JALR`
670			`ori $2,$0,'m'`
671			`sb $2,0($20)`
672			`ori $10,$0,'A'`
673			`ori $11,$0,'B'`
674			`ori $12,$0,'C'`
675			`ori $13,$0,'D'`
676			`ori $14,$0,'E'`
677			`ori $15,$0,'X'`
678			`la $3,$JALR1`
679			`jalr $3`
680			`sb $10,0($20)`
681			`sb $13,0($20)`
682			`b $JALR2`
683			`sb $14,0($20)`
684			`sb $15,0($20)`
685			`$JALR1:`
686			`sb $11,0($20)`
687			`jr $31`
688			`sb $12,0($20)`
689			`sb $22,0($20)`
690			`$JALR2:`
691			`sb $23,0($20)`
692			`sb $21,0($20)`
693
694			`#n: JR`
695			`ori $2,$0,'n'`
696			`sb $2,0($20)`
697			`ori $10,$0,'A'`
698			`ori $11,$0,'B'`
699			`ori $15,$0,'X'`
700			`la $3,$JR1`
701			`jr $3`
702			`sb $10,0($20)`
703			`sb $15,0($20)`
704			`$JR1:`
705			`sb $11,0($20)`
706			`sb $23,0($20)`
707			`sb $21,0($20)`
708
709			`#o: NOP`
710			`ori $2,$0,'o'`
711			`sb $2,0($20)`
712			`ori $2,$0,65`
713			`nop`
714			`sb $2,0($20)`
715			`sb $23,0($20)`
716			`sb $21,0($20)`
717
718			`# b LoadTest`
719
720	4	ja_rd
721	2	ja_rd	`BreakTest:`
722	4	ja_rd	`.ifgt TEST_BREAK`
723	2	ja_rd	`#p: BREAK`
724	4	ja_rd	`ori $2,$0,'p' # check if it jumps to break address and comes back`
725	2	ja_rd	`sb $2,0($20)`
726			`ori $2,$0,'z'`
727			`ori $4,$0,59`
728			`break 0`
729			`addi $4,$4,1`
730			`sb $4,0($20)`
731	4	ja_rd
732			`break 0 # check if load instruction is aborted (@log)`
733			`lb $2,16($2)`
734
735			`break 0 # check if jump instruction is aborted (@log)`
736	9	ja_rd	`j break_jump_test1`
737	4	ja_rd	`add $4,$4,5`
738
739	9	ja_rd	`break_jump_test1:`
740	4	ja_rd	`add $4,$4,1 # make sure the jump shows in the log (@log)`
741
742	29	ja_rd	`break 0 # check if store instruction is aborted`
743			`sb $4,0($20)`
744
745			`j break_jump_test2# check if break works in delay slot of jump`
746			`break 0`
747	9	ja_rd	`nop`
748			`j break_continue`
749			`nop`
750
751			`break_jump_test2:`
752			`add $4,$4,1`
753
754			`break_continue:`
755	2	ja_rd	`sb $23,0($20)`
756	4	ja_rd	`sb $21,0($20)`
757			`.endif`
758	2	ja_rd
759			`#q: SYSCALL`
760	14	ja_rd	`ori $2,$0,'q' # check if it jumpts to trap vector and comes back`
761	2	ja_rd	`sb $2,0($20)`
762			`ori $4,$0,61`
763			`syscall 0`
764			`addi $4,$4,-1`
765			`sb $4,0($20)`
766	14	ja_rd
767			`syscall 0 # check if load instruction is aborted (@log)`
768			`lb $2,16($2)`
769
770			`syscall 0 # check if jump instruction is aborted (@log)`
771			`j syscall_jump_test1`
772			`add $4,$4,5`
773
774			`syscall_jump_test1:`
775			`add $4,$4,1 # make sure the jump shows in the log (@log)`
776
777			`# TODO traps in delay slots not supported yet`
778			`#j syscall_jump_test2 # check if syscall works in delay slot of jump`
779			`#break 0`
780			`nop`
781			`j syscall_continue`
782			`nop`
783
784			`syscall_jump_test2:`
785			`add $4,$4,1`
786
787			`syscall_continue:`
788	2	ja_rd	`sb $23,0($20)`
789			`sb $21,0($20)`
790
791
792			`######################################`
793			`#Load, Store, and Memory Control Instructions`
794			`######################################`
795			`LoadTest:`
796			`ori $2,$0,'L'`
797			`sb $2,0($20)`
798			`ori $2,$0,'o'`
799			`sb $2,0($20)`
800			`ori $2,$0,'a'`
801			`sb $2,0($20)`
802			`ori $2,$0,'d'`
803			`sb $2,0($20)`
804			`sb $23,0($20)`
805			`sb $21,0($20)`
806
807			`#a: LB`
808			`ori $2,$0,'a'`
809			`sb $2,0($20)`
810			`or $2,$0,$24`
811			`li $3,0x414243fc`
812			`sw $3,16($2) # 16($2) = 0x414243fc`
813			`lb $4,16($2) # $4 = 0x41`
814			`sb $4,0($20) # UART = 0x41`
815			`lb $4,17($2) # $4 = 0x42`
816			`nop`
817			`sb $4,0($20) # UART = 0x42`
818			`lb $4,18($2) # $4 = 0x43`
819			`nop`
820			`sb $4,0($20) # UART = 0x43`
821			`lb $2,19($2) # $2 = 0xffff.fffc`
822			`nop`
823			`sra $3,$2,8 # $3 = 0xffff.ffff`
824			`addi $3,$3,0x45 # $3 = 0x44`
825			`sb $3,0($20) # UART = 0x44`
826			`addi $2,$2,0x49 # $4 = 0x45, overflow`
827			`sb $2,0($20) # UART = 0x45`
828			`sb $23,0($20) # UART = CR`
829			`sb $21,0($20) # UART = LF`
830
831			`#b: LBU`
832			`ori $2,$0,'b'`
833			`sb $2,0($20)`
834			`or $2,$0,$24`
835			`li $3,0x41424344`
836			`sw $3,16($2)`
837			`lb $4,16($2)`
838			`sb $4,0($20)`
839			`lb $4,17($2)`
840			`sb $4,0($20)`
841			`lb $4,18($2)`
842			`sb $4,0($20)`
843			`lb $2,19($2)`
844			`sb $2,0($20)`
845			`sb $23,0($20)`
846			`sb $21,0($20)`
847
848			`#c: LH`
849			`ori $2,$0,'c'`
850			`sb $2,0($20)`
851			`or $2,$0,$24`
852			`li $3,0x00410042`
853			`sw $3,16($2)`
854			`lh $4,16($2)`
855			`sb $4,0($20)`
856			`lh $2,18($2)`
857			`sb $2,0($20)`
858			`sb $23,0($20)`
859			`sb $21,0($20)`
860
861			`#d: LHU`
862			`ori $2,$0,'d'`
863			`sb $2,0($20)`
864			`or $2,$0,$24`
865			`li $3,0x00410042`
866			`sw $3,16($2)`
867			`lh $4,16($2)`
868			`sb $4,0($20)`
869			`lh $2,18($2)`
870			`sb $2,0($20)`
871			`sb $23,0($20)`
872			`sb $21,0($20)`
873
874			`#e: LW`
875			`ori $2,$0,'e'`
876			`sb $2,0($20)`
877			`or $2,$0,$24`
878			`li $3,'A'`
879			`sw $3,16($2)`
880			`ori $3,$0,0`
881			`lw $2,16($2)`
882			`sb $2,0($20)`
883			`sb $23,0($20)`
884			`sb $21,0($20)`
885
886			`.ifgt TEST_UNALIGNED_LOADS`
887			`#f: LWL & LWR`
888			`ori $2,$0,'f'`
889			`sb $2,0($20)`
890			`or $2,$0,$24`
891			`li $3,'A'`
892			`sw $3,16($2)`
893			`ori $3,$0,0`
894			`lwl $2,16($2)`
895			`lwr $2,16($2)`
896			`sb $2,0($20)`
897			`sb $23,0($20)`
898			`sb $21,0($20)`
899			`.endif`
900
901			`#g: SB`
902			`ori $2,$0,'g'`
903			`sb $2,0($20)`
904			`ori $2,$0,'A'`
905			`sb $2,0($20)`
906			`sb $23,0($20)`
907			`sb $21,0($20)`
908
909			`#h: SH`
910			`ori $2,$0,'h'`
911			`sb $2,0($20)`
912			`or $4,$0,$24`
913			`ori $2,$0,0x4142`
914			`sh $2,16($4)`
915			`lb $3,16($4)`
916			`sb $3,0($20)`
917			`lb $2,17($4)`
918			`sb $2,0($20)`
919			`sb $23,0($20)`
920			`sb $21,0($20)`
921
922			`#i: SW`
923			`ori $2,$0,'i'`
924			`sb $2,0($20)`
925			`or $2,$0,$24`
926			`li $3,0x41424344`
927			`sw $3,16($2)`
928			`lb $4,16($2)`
929			`sb $4,0($20)`
930			`lb $4,17($2)`
931			`sb $4,0($20)`
932			`lb $4,18($2)`
933			`sb $4,0($20)`
934			`lb $2,19($2)`
935			`sb $2,0($20)`
936			`sb $23,0($20)`
937			`sb $21,0($20)`
938
939			`.ifgt TEST_UNALIGNED_STORES`
940			`#j: SWL & SWR`
941			`ori $2,$0,'j'`
942			`sb $2,0($20)`
943			`or $2,$0,$24`
944			`li $3,0x41424344`
945			`swl $3,16($2)`
946			`swr $3,16($2)`
947			`lb $4,16($2)`
948			`sb $4,0($20)`
949			`lb $4,17($2)`
950			`sb $4,0($20)`
951			`lb $4,18($2)`
952			`sb $4,0($20)`
953			`lb $2,19($2)`
954			`sb $2,0($20)`
955			`sb $23,0($20)`
956			`sb $21,0($20)`
957			`.endif`
958
959			`######################################`
960			`#Logical Instructions`
961			`######################################`
962			`LogicalTest:`
963			`ori $2,$0,'L'`
964			`sb $2,0($20)`
965			`ori $2,$0,'o'`
966			`sb $2,0($20)`
967			`ori $2,$0,'g'`
968			`sb $2,0($20)`
969			`ori $2,$0,'i'`
970			`sb $2,0($20)`
971			`ori $2,$0,'c'`
972			`sb $2,0($20)`
973			`sb $23,0($20)`
974			`sb $21,0($20)`
975
976			`#a: AND`
977			`ori $2,$0,'a'`
978			`sb $2,0($20)`
979			`ori $2,$0,0x0741`
980			`ori $3,$0,0x60f3`
981			`and $4,$2,$3`
982			`sb $4,0($20)`
983			`sb $23,0($20)`
984			`sb $21,0($20)`
985
986			`#b: ANDI`
987			`ori $2,$0,'b'`
988			`sb $2,0($20)`
989			`ori $2,$0,0x0741`
990			`andi $4,$2,0x60f3`
991			`sb $4,0($20)`
992			`sb $23,0($20)`
993			`sb $21,0($20)`
994
995			`#c: LUI`
996			`ori $2,$0,'c'`
997			`sb $2,0($20)`
998			`lui $2,0x41`
999			`srl $3,$2,16`
1000			`sb $3,0($20)`
1001			`sb $23,0($20)`
1002			`sb $21,0($20)`
1003
1004			`#d: NOR`
1005			`ori $2,$0,'d'`
1006			`sb $2,0($20)`
1007			`li $2,0xf0fff08e`
1008			`li $3,0x0f0f0f30`
1009			`nor $4,$2,$3`
1010			`sb $4,0($20)`
1011			`sb $23,0($20)`
1012			`sb $21,0($20)`
1013
1014			`#e: OR`
1015			`ori $2,$0,'e'`
1016			`sb $2,0($20)`
1017			`ori $2,$0,0x40`
1018			`ori $3,$0,0x01`
1019			`or $4,$2,$3`
1020			`sb $4,0($20)`
1021			`sb $23,0($20)`
1022			`sb $21,0($20)`
1023
1024			`#f: ORI`
1025			`ori $2,$0,'f'`
1026			`sb $2,0($20)`
1027			`ori $2,$0,0x40`
1028			`ori $4,$2,0x01`
1029			`sb $4,0($20)`
1030			`sb $23,0($20)`
1031			`sb $21,0($20)`
1032
1033			`#g: XOR`
1034			`ori $2,$0,'g'`
1035			`sb $2,0($20)`
1036			`ori $2,$0,0xf043`
1037			`ori $3,$0,0xf002`
1038			`xor $4,$2,$3`
1039			`sb $4,0($20)`
1040			`sb $23,0($20)`
1041			`sb $21,0($20)`
1042
1043			`#h: XORI`
1044			`ori $2,$0,'h'`
1045			`sb $2,0($20)`
1046			`ori $2,$0,0xf043`
1047			`xor $4,$2,0xf002`
1048			`sb $4,0($20)`
1049			`sb $23,0($20)`
1050			`sb $21,0($20)`
1051
1052
1053			`######################################`
1054			`#Move Instructions`
1055			`######################################`
1056			`MoveTest:`
1057			`ori $2,$0,'M'`
1058			`sb $2,0($20)`
1059			`ori $2,$0,'o'`
1060			`sb $2,0($20)`
1061			`ori $2,$0,'v'`
1062			`sb $2,0($20)`
1063			`ori $2,$0,'e'`
1064			`sb $2,0($20)`
1065			`sb $23,0($20)`
1066			`sb $21,0($20)`
1067
1068	25	ja_rd	`# HI and LO are only implemented if the mul/div block is`
1069			`.ifgt (TEST_DIV + TEST_MUL)`
1070	2	ja_rd	`#a: MFHI`
1071			`ori $2,$0,'a'`
1072			`sb $2,0($20)`
1073			`ori $2,$0,65`
1074			`mthi $2`
1075			`mfhi $3`
1076			`sb $3,0($20)`
1077			`sb $23,0($20)`
1078			`sb $21,0($20)`
1079
1080			`#b: MFLO`
1081			`ori $2,$0,'b'`
1082			`sb $2,0($20)`
1083			`ori $2,$0,65`
1084			`mtlo $2`
1085			`mflo $3`
1086			`sb $3,0($20)`
1087			`sb $23,0($20)`
1088			`sb $21,0($20)`
1089
1090			`#c: MTHI`
1091			`ori $2,$0,'c'`
1092			`sb $2,0($20)`
1093			`ori $2,$0,65`
1094			`mthi $2`
1095			`mfhi $3`
1096			`sb $3,0($20)`
1097			`sb $23,0($20)`
1098			`sb $21,0($20)`
1099
1100			`#d: MTLO`
1101			`ori $2,$0,'d'`
1102			`sb $2,0($20)`
1103			`ori $2,$0,65`
1104			`mtlo $2`
1105			`mflo $3`
1106			`sb $3,0($20)`
1107			`sb $23,0($20)`
1108			`sb $21,0($20)`
1109	25	ja_rd	`.endif`
1110	2	ja_rd
1111			`######################################`
1112			`#Shift Instructions`
1113			`######################################`
1114			`ShiftTest:`
1115			`ori $2,$0,'S'`
1116			`sb $2,0($20)`
1117			`ori $2,$0,'h'`
1118			`sb $2,0($20)`
1119			`ori $2,$0,'i'`
1120			`sb $2,0($20)`
1121			`ori $2,$0,'f'`
1122			`sb $2,0($20)`
1123			`ori $2,$0,'t'`
1124			`sb $2,0($20)`
1125			`sb $23,0($20)`
1126			`sb $21,0($20)`
1127
1128			`#a: SLL`
1129			`ori $2,$0,'a'`
1130			`sb $2,0($20)`
1131			`li $2,0x40414243`
1132			`sll $3,$2,8`
1133			`srl $3,$3,24`
1134			`sb $3,0($20)`
1135			`sb $23,0($20)`
1136			`sb $21,0($20)`
1137
1138			`#b: SLLV`
1139			`ori $2,$0,'b'`
1140			`sb $2,0($20)`
1141			`li $2,0x40414243`
1142			`ori $3,$0,8`
1143			`sllv $3,$2,$3`
1144			`srl $3,$3,24`
1145			`sb $3,0($20)`
1146			`sb $23,0($20)`
1147			`sb $21,0($20)`
1148
1149			`#c: SRA`
1150			`ori $2,$0,'c'`
1151			`sb $2,0($20)`
1152			`li $2,0x40414243`
1153			`sra $3,$2,16`
1154			`sb $3,0($20)`
1155			`li $2,0x84000000`
1156			`sra $3,$2,25`
1157			`sub $3,$3,0x80`
1158			`sb $3,0($20)`
1159			`sb $23,0($20)`
1160			`sb $21,0($20)`
1161
1162			`#d: SRAV`
1163			`ori $2,$0,'d'`
1164			`sb $2,0($20)`
1165			`li $2,0x40414243`
1166			`ori $3,$0,16`
1167			`srav $3,$2,$3`
1168			`sb $3,0($20)`
1169			`ori $3,$0,25`
1170			`li $2,0x84000000`
1171			`srav $3,$2,$3`
1172			`sub $3,$3,0x80`
1173			`sb $3,0($20)`
1174			`sb $23,0($20)`
1175			`sb $21,0($20)`
1176
1177			`#e: SRL`
1178			`ori $2,$0,'e'`
1179			`sb $2,0($20)`
1180			`li $2,0x40414243`
1181			`srl $3,$2,16`
1182			`sb $3,0($20)`
1183			`li $2,0x84000000`
1184			`srl $3,$2,25`
1185			`sb $3,0($20)`
1186			`sb $23,0($20)`
1187			`sb $21,0($20)`
1188
1189			`#f: SRLV`
1190			`ori $2,$0,'f'`
1191			`sb $2,0($20)`
1192			`li $2,0x40414243`
1193			`ori $3,$0,16`
1194			`srlv $4,$2,$3`
1195			`sb $4,0($20)`
1196			`ori $3,$0,25`
1197			`li $2,0x84000000`
1198			`srlv $3,$2,$3`
1199			`sb $3,0($20)`
1200			`sb $23,0($20)`
1201			`sb $21,0($20)`
1202
1203
1204			`ori $2,$0,'D'`
1205			`sb $2,0($20)`
1206			`ori $2,$0,'o'`
1207			`sb $2,0($20)`
1208			`ori $2,$0,'n'`
1209			`sb $2,0($20)`
1210			`ori $2,$0,'e'`
1211			`sb $2,0($20)`
1212			`sb $23,0($20)`
1213			`sb $21,0($20)`
1214	38	ja_rd
1215	2	ja_rd
1216			`$DONE:`
1217			`j $DONE`
1218			`nop`
1219
1220			`.set reorder`
1221			`.end entry`
1222

Browse

Tools

Subversion Repositories ion

[/] [ion/] [trunk/] [src/] [opcodes/] [opcodes.s] - Blame information for rev 38