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test-disasm-mips.cc
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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 
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 
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 }
v8::internal::s2
const SwVfpRegister s2
Definition: assembler-arm.h:398
v8::internal::s7
const SwVfpRegister s7
Definition: assembler-arm.h:403
v8::internal::s6
const SwVfpRegister s6
Definition: assembler-arm.h:402
v8::internal::byte
uint8_t byte
Definition: globals.h:185
v8::internal::Vector::start
T * start() const
Definition: utils.h:426
disasm::Disassembler::InstructionDecode
int InstructionDecode(v8::internal::Vector< char > buffer, byte *instruction)
DisassembleAndCompare
bool DisassembleAndCompare(byte *pc, const char *compare_string)
Definition: test-disasm-mips.cc:43
v8::internal::pc
const Register pc
Definition: assembler-arm.h:244
v8::internal::s0
const SwVfpRegister s0
Definition: assembler-arm.h:396
VERIFY_RUN
#define VERIFY_RUN()
Definition: test-disasm-mips.cc:90
v8::internal::s1
const SwVfpRegister s1
Definition: assembler-arm.h:397
v8::internal::fp
const Register fp
Definition: assembler-arm.h:240
SET_UP
#define SET_UP()
Definition: test-disasm-mips.cc:66
COMPARE
#define COMPARE(asm_, compare_string)
Definition: test-disasm-mips.cc:79