1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 //
28
29 #include <stdlib.h>
30
31 #include "v8.h"
32
33 #include "debug.h"
34 #include "disasm.h"
35 #include "disassembler.h"
36 #include "macro-assembler.h"
37 #include "serialize.h"
38 #include "cctest.h"
39
40 using namespace v8::internal;
41
42
DisassembleAndCompare(byte * pc,const char * compare_string)43 bool DisassembleAndCompare(byte* pc, const char* compare_string) {
44 disasm::NameConverter converter;
45 disasm::Disassembler disasm(converter);
46 EmbeddedVector<char, 128> disasm_buffer;
47
48 disasm.InstructionDecode(disasm_buffer, pc);
49
50 if (strcmp(compare_string, disasm_buffer.start()) != 0) {
51 fprintf(stderr,
52 "expected: \n"
53 "%s\n"
54 "disassembled: \n"
55 "%s\n\n",
56 compare_string, disasm_buffer.start());
57 return false;
58 }
59 return true;
60 }
61
62
63 // Set up V8 to a state where we can at least run the assembler and
64 // disassembler. Declare the variables and allocate the data structures used
65 // in the rest of the macros.
66 #define SET_UP() \
67 CcTest::InitializeVM(); \
68 Isolate* isolate = CcTest::i_isolate(); \
69 HandleScope scope(isolate); \
70 byte *buffer = reinterpret_cast<byte*>(malloc(4*1024)); \
71 Assembler assm(isolate, buffer, 4*1024); \
72 bool failure = false;
73
74
75 // This macro assembles one instruction using the preallocated assembler and
76 // disassembles the generated instruction, comparing the output to the expected
77 // value. If the comparison fails an error message is printed, but the test
78 // continues to run until the end.
79 #define COMPARE(asm_, compare_string) \
80 { \
81 int pc_offset = assm.pc_offset(); \
82 byte *progcounter = &buffer[pc_offset]; \
83 assm.asm_; \
84 if (!DisassembleAndCompare(progcounter, compare_string)) failure = true; \
85 }
86
87
88 // Verify that all invocations of the COMPARE macro passed successfully.
89 // Exit with a failure if at least one of the tests failed.
90 #define VERIFY_RUN() \
91 if (failure) { \
92 V8_Fatal(__FILE__, __LINE__, "MIPS Disassembler tests failed.\n"); \
93 }
94
95
TEST(Type0)96 TEST(Type0) {
97 SET_UP();
98
99 COMPARE(addu(a0, a1, a2),
100 "00a62021 addu a0, a1, a2");
101 COMPARE(addu(t2, t3, t4),
102 "016c5021 addu t2, t3, t4");
103 COMPARE(addu(v0, v1, s0),
104 "00701021 addu v0, v1, s0");
105
106 COMPARE(subu(a0, a1, a2),
107 "00a62023 subu a0, a1, a2");
108 COMPARE(subu(t2, t3, t4),
109 "016c5023 subu t2, t3, t4");
110 COMPARE(subu(v0, v1, s0),
111 "00701023 subu v0, v1, s0");
112
113 COMPARE(mult(a0, a1),
114 "00850018 mult a0, a1");
115 COMPARE(mult(t2, t3),
116 "014b0018 mult t2, t3");
117 COMPARE(mult(v0, v1),
118 "00430018 mult v0, v1");
119
120 COMPARE(multu(a0, a1),
121 "00850019 multu a0, a1");
122 COMPARE(multu(t2, t3),
123 "014b0019 multu t2, t3");
124 COMPARE(multu(v0, v1),
125 "00430019 multu v0, v1");
126
127 COMPARE(div(a0, a1),
128 "0085001a div a0, a1");
129 COMPARE(div(t2, t3),
130 "014b001a div t2, t3");
131 COMPARE(div(v0, v1),
132 "0043001a div v0, v1");
133
134 COMPARE(divu(a0, a1),
135 "0085001b divu a0, a1");
136 COMPARE(divu(t2, t3),
137 "014b001b divu t2, t3");
138 COMPARE(divu(v0, v1),
139 "0043001b divu v0, v1");
140
141 if (kArchVariant != kLoongson) {
142 COMPARE(mul(a0, a1, a2),
143 "70a62002 mul a0, a1, a2");
144 COMPARE(mul(t2, t3, t4),
145 "716c5002 mul t2, t3, t4");
146 COMPARE(mul(v0, v1, s0),
147 "70701002 mul v0, v1, s0");
148 }
149
150 COMPARE(addiu(a0, a1, 0x0),
151 "24a40000 addiu a0, a1, 0");
152 COMPARE(addiu(s0, s1, 32767),
153 "26307fff addiu s0, s1, 32767");
154 COMPARE(addiu(t2, t3, -32768),
155 "256a8000 addiu t2, t3, -32768");
156 COMPARE(addiu(v0, v1, -1),
157 "2462ffff addiu v0, v1, -1");
158
159 COMPARE(and_(a0, a1, a2),
160 "00a62024 and a0, a1, a2");
161 COMPARE(and_(s0, s1, s2),
162 "02328024 and s0, s1, s2");
163 COMPARE(and_(t2, t3, t4),
164 "016c5024 and t2, t3, t4");
165 COMPARE(and_(v0, v1, a2),
166 "00661024 and v0, v1, a2");
167
168 COMPARE(or_(a0, a1, a2),
169 "00a62025 or a0, a1, a2");
170 COMPARE(or_(s0, s1, s2),
171 "02328025 or s0, s1, s2");
172 COMPARE(or_(t2, t3, t4),
173 "016c5025 or t2, t3, t4");
174 COMPARE(or_(v0, v1, a2),
175 "00661025 or v0, v1, a2");
176
177 COMPARE(xor_(a0, a1, a2),
178 "00a62026 xor a0, a1, a2");
179 COMPARE(xor_(s0, s1, s2),
180 "02328026 xor s0, s1, s2");
181 COMPARE(xor_(t2, t3, t4),
182 "016c5026 xor t2, t3, t4");
183 COMPARE(xor_(v0, v1, a2),
184 "00661026 xor v0, v1, a2");
185
186 COMPARE(nor(a0, a1, a2),
187 "00a62027 nor a0, a1, a2");
188 COMPARE(nor(s0, s1, s2),
189 "02328027 nor s0, s1, s2");
190 COMPARE(nor(t2, t3, t4),
191 "016c5027 nor t2, t3, t4");
192 COMPARE(nor(v0, v1, a2),
193 "00661027 nor v0, v1, a2");
194
195 COMPARE(andi(a0, a1, 0x1),
196 "30a40001 andi a0, a1, 0x1");
197 COMPARE(andi(v0, v1, 0xffff),
198 "3062ffff andi v0, v1, 0xffff");
199
200 COMPARE(ori(a0, a1, 0x1),
201 "34a40001 ori a0, a1, 0x1");
202 COMPARE(ori(v0, v1, 0xffff),
203 "3462ffff ori v0, v1, 0xffff");
204
205 COMPARE(xori(a0, a1, 0x1),
206 "38a40001 xori a0, a1, 0x1");
207 COMPARE(xori(v0, v1, 0xffff),
208 "3862ffff xori v0, v1, 0xffff");
209
210 COMPARE(lui(a0, 0x1),
211 "3c040001 lui a0, 0x1");
212 COMPARE(lui(v0, 0xffff),
213 "3c02ffff lui v0, 0xffff");
214
215 COMPARE(sll(a0, a1, 0),
216 "00052000 sll a0, a1, 0");
217 COMPARE(sll(s0, s1, 8),
218 "00118200 sll s0, s1, 8");
219 COMPARE(sll(t2, t3, 24),
220 "000b5600 sll t2, t3, 24");
221 COMPARE(sll(v0, v1, 31),
222 "000317c0 sll v0, v1, 31");
223
224 COMPARE(sllv(a0, a1, a2),
225 "00c52004 sllv a0, a1, a2");
226 COMPARE(sllv(s0, s1, s2),
227 "02518004 sllv s0, s1, s2");
228 COMPARE(sllv(t2, t3, t4),
229 "018b5004 sllv t2, t3, t4");
230 COMPARE(sllv(v0, v1, fp),
231 "03c31004 sllv v0, v1, fp");
232
233 COMPARE(srl(a0, a1, 0),
234 "00052002 srl a0, a1, 0");
235 COMPARE(srl(s0, s1, 8),
236 "00118202 srl s0, s1, 8");
237 COMPARE(srl(t2, t3, 24),
238 "000b5602 srl t2, t3, 24");
239 COMPARE(srl(v0, v1, 31),
240 "000317c2 srl v0, v1, 31");
241
242 COMPARE(srlv(a0, a1, a2),
243 "00c52006 srlv a0, a1, a2");
244 COMPARE(srlv(s0, s1, s2),
245 "02518006 srlv s0, s1, s2");
246 COMPARE(srlv(t2, t3, t4),
247 "018b5006 srlv t2, t3, t4");
248 COMPARE(srlv(v0, v1, fp),
249 "03c31006 srlv v0, v1, fp");
250
251 COMPARE(sra(a0, a1, 0),
252 "00052003 sra a0, a1, 0");
253 COMPARE(sra(s0, s1, 8),
254 "00118203 sra s0, s1, 8");
255 COMPARE(sra(t2, t3, 24),
256 "000b5603 sra t2, t3, 24");
257 COMPARE(sra(v0, v1, 31),
258 "000317c3 sra v0, v1, 31");
259
260 COMPARE(srav(a0, a1, a2),
261 "00c52007 srav a0, a1, a2");
262 COMPARE(srav(s0, s1, s2),
263 "02518007 srav s0, s1, s2");
264 COMPARE(srav(t2, t3, t4),
265 "018b5007 srav t2, t3, t4");
266 COMPARE(srav(v0, v1, fp),
267 "03c31007 srav v0, v1, fp");
268
269 if (kArchVariant == kMips32r2) {
270 COMPARE(rotr(a0, a1, 0),
271 "00252002 rotr a0, a1, 0");
272 COMPARE(rotr(s0, s1, 8),
273 "00318202 rotr s0, s1, 8");
274 COMPARE(rotr(t2, t3, 24),
275 "002b5602 rotr t2, t3, 24");
276 COMPARE(rotr(v0, v1, 31),
277 "002317c2 rotr v0, v1, 31");
278
279 COMPARE(rotrv(a0, a1, a2),
280 "00c52046 rotrv a0, a1, a2");
281 COMPARE(rotrv(s0, s1, s2),
282 "02518046 rotrv s0, s1, s2");
283 COMPARE(rotrv(t2, t3, t4),
284 "018b5046 rotrv t2, t3, t4");
285 COMPARE(rotrv(v0, v1, fp),
286 "03c31046 rotrv v0, v1, fp");
287 }
288
289 COMPARE(break_(0),
290 "0000000d break, code: 0x00000 (0)");
291 COMPARE(break_(261120),
292 "00ff000d break, code: 0x3fc00 (261120)");
293 COMPARE(break_(1047552),
294 "03ff000d break, code: 0xffc00 (1047552)");
295
296 COMPARE(tge(a0, a1, 0),
297 "00850030 tge a0, a1, code: 0x000");
298 COMPARE(tge(s0, s1, 1023),
299 "0211fff0 tge s0, s1, code: 0x3ff");
300 COMPARE(tgeu(a0, a1, 0),
301 "00850031 tgeu a0, a1, code: 0x000");
302 COMPARE(tgeu(s0, s1, 1023),
303 "0211fff1 tgeu s0, s1, code: 0x3ff");
304 COMPARE(tlt(a0, a1, 0),
305 "00850032 tlt a0, a1, code: 0x000");
306 COMPARE(tlt(s0, s1, 1023),
307 "0211fff2 tlt s0, s1, code: 0x3ff");
308 COMPARE(tltu(a0, a1, 0),
309 "00850033 tltu a0, a1, code: 0x000");
310 COMPARE(tltu(s0, s1, 1023),
311 "0211fff3 tltu s0, s1, code: 0x3ff");
312 COMPARE(teq(a0, a1, 0),
313 "00850034 teq a0, a1, code: 0x000");
314 COMPARE(teq(s0, s1, 1023),
315 "0211fff4 teq s0, s1, code: 0x3ff");
316 COMPARE(tne(a0, a1, 0),
317 "00850036 tne a0, a1, code: 0x000");
318 COMPARE(tne(s0, s1, 1023),
319 "0211fff6 tne s0, s1, code: 0x3ff");
320
321 COMPARE(mfhi(a0),
322 "00002010 mfhi a0");
323 COMPARE(mfhi(s2),
324 "00009010 mfhi s2");
325 COMPARE(mfhi(t4),
326 "00006010 mfhi t4");
327 COMPARE(mfhi(v1),
328 "00001810 mfhi v1");
329 COMPARE(mflo(a0),
330 "00002012 mflo a0");
331 COMPARE(mflo(s2),
332 "00009012 mflo s2");
333 COMPARE(mflo(t4),
334 "00006012 mflo t4");
335 COMPARE(mflo(v1),
336 "00001812 mflo v1");
337
338 COMPARE(slt(a0, a1, a2),
339 "00a6202a slt a0, a1, a2");
340 COMPARE(slt(s0, s1, s2),
341 "0232802a slt s0, s1, s2");
342 COMPARE(slt(t2, t3, t4),
343 "016c502a slt t2, t3, t4");
344 COMPARE(slt(v0, v1, a2),
345 "0066102a slt v0, v1, a2");
346 COMPARE(sltu(a0, a1, a2),
347 "00a6202b sltu a0, a1, a2");
348 COMPARE(sltu(s0, s1, s2),
349 "0232802b sltu s0, s1, s2");
350 COMPARE(sltu(t2, t3, t4),
351 "016c502b sltu t2, t3, t4");
352 COMPARE(sltu(v0, v1, a2),
353 "0066102b sltu v0, v1, a2");
354
355 COMPARE(slti(a0, a1, 0),
356 "28a40000 slti a0, a1, 0");
357 COMPARE(slti(s0, s1, 32767),
358 "2a307fff slti s0, s1, 32767");
359 COMPARE(slti(t2, t3, -32768),
360 "296a8000 slti t2, t3, -32768");
361 COMPARE(slti(v0, v1, -1),
362 "2862ffff slti v0, v1, -1");
363 COMPARE(sltiu(a0, a1, 0),
364 "2ca40000 sltiu a0, a1, 0");
365 COMPARE(sltiu(s0, s1, 32767),
366 "2e307fff sltiu s0, s1, 32767");
367 COMPARE(sltiu(t2, t3, -32768),
368 "2d6a8000 sltiu t2, t3, -32768");
369 COMPARE(sltiu(v0, v1, -1),
370 "2c62ffff sltiu v0, v1, -1");
371
372 if (kArchVariant != kLoongson) {
373 COMPARE(movz(a0, a1, a2),
374 "00a6200a movz a0, a1, a2");
375 COMPARE(movz(s0, s1, s2),
376 "0232800a movz s0, s1, s2");
377 COMPARE(movz(t2, t3, t4),
378 "016c500a movz t2, t3, t4");
379 COMPARE(movz(v0, v1, a2),
380 "0066100a movz v0, v1, a2");
381 COMPARE(movn(a0, a1, a2),
382 "00a6200b movn a0, a1, a2");
383 COMPARE(movn(s0, s1, s2),
384 "0232800b movn s0, s1, s2");
385 COMPARE(movn(t2, t3, t4),
386 "016c500b movn t2, t3, t4");
387 COMPARE(movn(v0, v1, a2),
388 "0066100b movn v0, v1, a2");
389
390 COMPARE(movt(a0, a1, 1),
391 "00a52001 movt a0, a1, 1");
392 COMPARE(movt(s0, s1, 2),
393 "02298001 movt s0, s1, 2");
394 COMPARE(movt(t2, t3, 3),
395 "016d5001 movt t2, t3, 3");
396 COMPARE(movt(v0, v1, 7),
397 "007d1001 movt v0, v1, 7");
398 COMPARE(movf(a0, a1, 0),
399 "00a02001 movf a0, a1, 0");
400 COMPARE(movf(s0, s1, 4),
401 "02308001 movf s0, s1, 4");
402 COMPARE(movf(t2, t3, 5),
403 "01745001 movf t2, t3, 5");
404 COMPARE(movf(v0, v1, 6),
405 "00781001 movf v0, v1, 6");
406
407 COMPARE(clz(a0, a1),
408 "70a42020 clz a0, a1");
409 COMPARE(clz(s6, s7),
410 "72f6b020 clz s6, s7");
411 COMPARE(clz(v0, v1),
412 "70621020 clz v0, v1");
413 }
414
415 if (kArchVariant == kMips32r2) {
416 COMPARE(ins_(a0, a1, 31, 1),
417 "7ca4ffc4 ins a0, a1, 31, 1");
418 COMPARE(ins_(s6, s7, 30, 2),
419 "7ef6ff84 ins s6, s7, 30, 2");
420 COMPARE(ins_(v0, v1, 0, 32),
421 "7c62f804 ins v0, v1, 0, 32");
422 COMPARE(ext_(a0, a1, 31, 1),
423 "7ca407c0 ext a0, a1, 31, 1");
424 COMPARE(ext_(s6, s7, 30, 2),
425 "7ef60f80 ext s6, s7, 30, 2");
426 COMPARE(ext_(v0, v1, 0, 32),
427 "7c62f800 ext v0, v1, 0, 32");
428 }
429
430 VERIFY_RUN();
431 }
432