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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 
44 
45 static void InitializeVM() {
46  // Disable compilation of natives.
47  FLAG_disable_native_files = true;
48  if (env.IsEmpty()) {
49  env = v8::Context::New();
50  }
51 }
52 
53 
54 bool DisassembleAndCompare(byte* pc, const char* compare_string) {
55  disasm::NameConverter converter;
56  disasm::Disassembler disasm(converter);
57  EmbeddedVector<char, 128> disasm_buffer;
58 
59  disasm.InstructionDecode(disasm_buffer, pc);
60 
61  if (strcmp(compare_string, disasm_buffer.start()) != 0) {
62  fprintf(stderr,
63  "expected: \n"
64  "%s\n"
65  "disassembled: \n"
66  "%s\n\n",
67  compare_string, disasm_buffer.start());
68  return false;
69  }
70  return true;
71 }
72 
73 
74 // Set up V8 to a state where we can at least run the assembler and
75 // disassembler. Declare the variables and allocate the data structures used
76 // in the rest of the macros.
77 #define SET_UP() \
78  InitializeVM(); \
79  v8::HandleScope scope; \
80  byte *buffer = reinterpret_cast<byte*>(malloc(4*1024)); \
81  Assembler assm(Isolate::Current(), buffer, 4*1024); \
82  bool failure = false;
83 
84 
85 // This macro assembles one instruction using the preallocated assembler and
86 // disassembles the generated instruction, comparing the output to the expected
87 // value. If the comparison fails an error message is printed, but the test
88 // continues to run until the end.
89 #define COMPARE(asm_, compare_string) \
90  { \
91  int pc_offset = assm.pc_offset(); \
92  byte *progcounter = &buffer[pc_offset]; \
93  assm.asm_; \
94  if (!DisassembleAndCompare(progcounter, compare_string)) failure = true; \
95  }
96 
97 
98 // Verify that all invocations of the COMPARE macro passed successfully.
99 // Exit with a failure if at least one of the tests failed.
100 #define VERIFY_RUN() \
101 if (failure) { \
102  V8_Fatal(__FILE__, __LINE__, "MIPS Disassembler tests failed.\n"); \
103  }
104 
105 
106 TEST(Type0) {
107  SET_UP();
108 
109  COMPARE(addu(a0, a1, a2),
110  "00a62021 addu a0, a1, a2");
111  COMPARE(addu(t2, t3, t4),
112  "016c5021 addu t2, t3, t4");
113  COMPARE(addu(v0, v1, s0),
114  "00701021 addu v0, v1, s0");
115 
116  COMPARE(subu(a0, a1, a2),
117  "00a62023 subu a0, a1, a2");
118  COMPARE(subu(t2, t3, t4),
119  "016c5023 subu t2, t3, t4");
120  COMPARE(subu(v0, v1, s0),
121  "00701023 subu v0, v1, s0");
122 
123  COMPARE(mult(a0, a1),
124  "00850018 mult a0, a1");
125  COMPARE(mult(t2, t3),
126  "014b0018 mult t2, t3");
127  COMPARE(mult(v0, v1),
128  "00430018 mult v0, v1");
129 
130  COMPARE(multu(a0, a1),
131  "00850019 multu a0, a1");
132  COMPARE(multu(t2, t3),
133  "014b0019 multu t2, t3");
134  COMPARE(multu(v0, v1),
135  "00430019 multu v0, v1");
136 
137  COMPARE(div(a0, a1),
138  "0085001a div a0, a1");
139  COMPARE(div(t2, t3),
140  "014b001a div t2, t3");
141  COMPARE(div(v0, v1),
142  "0043001a div v0, v1");
143 
144  COMPARE(divu(a0, a1),
145  "0085001b divu a0, a1");
146  COMPARE(divu(t2, t3),
147  "014b001b divu t2, t3");
148  COMPARE(divu(v0, v1),
149  "0043001b divu v0, v1");
150 
151  if (kArchVariant != kLoongson) {
152  COMPARE(mul(a0, a1, a2),
153  "70a62002 mul a0, a1, a2");
154  COMPARE(mul(t2, t3, t4),
155  "716c5002 mul t2, t3, t4");
156  COMPARE(mul(v0, v1, s0),
157  "70701002 mul v0, v1, s0");
158  }
159 
160  COMPARE(addiu(a0, a1, 0x0),
161  "24a40000 addiu a0, a1, 0");
162  COMPARE(addiu(s0, s1, 32767),
163  "26307fff addiu s0, s1, 32767");
164  COMPARE(addiu(t2, t3, -32768),
165  "256a8000 addiu t2, t3, -32768");
166  COMPARE(addiu(v0, v1, -1),
167  "2462ffff addiu v0, v1, -1");
168 
169  COMPARE(and_(a0, a1, a2),
170  "00a62024 and a0, a1, a2");
171  COMPARE(and_(s0, s1, s2),
172  "02328024 and s0, s1, s2");
173  COMPARE(and_(t2, t3, t4),
174  "016c5024 and t2, t3, t4");
175  COMPARE(and_(v0, v1, a2),
176  "00661024 and v0, v1, a2");
177 
178  COMPARE(or_(a0, a1, a2),
179  "00a62025 or a0, a1, a2");
180  COMPARE(or_(s0, s1, s2),
181  "02328025 or s0, s1, s2");
182  COMPARE(or_(t2, t3, t4),
183  "016c5025 or t2, t3, t4");
184  COMPARE(or_(v0, v1, a2),
185  "00661025 or v0, v1, a2");
186 
187  COMPARE(xor_(a0, a1, a2),
188  "00a62026 xor a0, a1, a2");
189  COMPARE(xor_(s0, s1, s2),
190  "02328026 xor s0, s1, s2");
191  COMPARE(xor_(t2, t3, t4),
192  "016c5026 xor t2, t3, t4");
193  COMPARE(xor_(v0, v1, a2),
194  "00661026 xor v0, v1, a2");
195 
196  COMPARE(nor(a0, a1, a2),
197  "00a62027 nor a0, a1, a2");
198  COMPARE(nor(s0, s1, s2),
199  "02328027 nor s0, s1, s2");
200  COMPARE(nor(t2, t3, t4),
201  "016c5027 nor t2, t3, t4");
202  COMPARE(nor(v0, v1, a2),
203  "00661027 nor v0, v1, a2");
204 
205  COMPARE(andi(a0, a1, 0x1),
206  "30a40001 andi a0, a1, 0x1");
207  COMPARE(andi(v0, v1, 0xffff),
208  "3062ffff andi v0, v1, 0xffff");
209 
210  COMPARE(ori(a0, a1, 0x1),
211  "34a40001 ori a0, a1, 0x1");
212  COMPARE(ori(v0, v1, 0xffff),
213  "3462ffff ori v0, v1, 0xffff");
214 
215  COMPARE(xori(a0, a1, 0x1),
216  "38a40001 xori a0, a1, 0x1");
217  COMPARE(xori(v0, v1, 0xffff),
218  "3862ffff xori v0, v1, 0xffff");
219 
220  COMPARE(lui(a0, 0x1),
221  "3c040001 lui a0, 0x1");
222  COMPARE(lui(v0, 0xffff),
223  "3c02ffff lui v0, 0xffff");
224 
225  COMPARE(sll(a0, a1, 0),
226  "00052000 sll a0, a1, 0");
227  COMPARE(sll(s0, s1, 8),
228  "00118200 sll s0, s1, 8");
229  COMPARE(sll(t2, t3, 24),
230  "000b5600 sll t2, t3, 24");
231  COMPARE(sll(v0, v1, 31),
232  "000317c0 sll v0, v1, 31");
233 
234  COMPARE(sllv(a0, a1, a2),
235  "00c52004 sllv a0, a1, a2");
236  COMPARE(sllv(s0, s1, s2),
237  "02518004 sllv s0, s1, s2");
238  COMPARE(sllv(t2, t3, t4),
239  "018b5004 sllv t2, t3, t4");
240  COMPARE(sllv(v0, v1, fp),
241  "03c31004 sllv v0, v1, fp");
242 
243  COMPARE(srl(a0, a1, 0),
244  "00052002 srl a0, a1, 0");
245  COMPARE(srl(s0, s1, 8),
246  "00118202 srl s0, s1, 8");
247  COMPARE(srl(t2, t3, 24),
248  "000b5602 srl t2, t3, 24");
249  COMPARE(srl(v0, v1, 31),
250  "000317c2 srl v0, v1, 31");
251 
252  COMPARE(srlv(a0, a1, a2),
253  "00c52006 srlv a0, a1, a2");
254  COMPARE(srlv(s0, s1, s2),
255  "02518006 srlv s0, s1, s2");
256  COMPARE(srlv(t2, t3, t4),
257  "018b5006 srlv t2, t3, t4");
258  COMPARE(srlv(v0, v1, fp),
259  "03c31006 srlv v0, v1, fp");
260 
261  COMPARE(sra(a0, a1, 0),
262  "00052003 sra a0, a1, 0");
263  COMPARE(sra(s0, s1, 8),
264  "00118203 sra s0, s1, 8");
265  COMPARE(sra(t2, t3, 24),
266  "000b5603 sra t2, t3, 24");
267  COMPARE(sra(v0, v1, 31),
268  "000317c3 sra v0, v1, 31");
269 
270  COMPARE(srav(a0, a1, a2),
271  "00c52007 srav a0, a1, a2");
272  COMPARE(srav(s0, s1, s2),
273  "02518007 srav s0, s1, s2");
274  COMPARE(srav(t2, t3, t4),
275  "018b5007 srav t2, t3, t4");
276  COMPARE(srav(v0, v1, fp),
277  "03c31007 srav v0, v1, fp");
278 
279  if (kArchVariant == kMips32r2) {
280  COMPARE(rotr(a0, a1, 0),
281  "00252002 rotr a0, a1, 0");
282  COMPARE(rotr(s0, s1, 8),
283  "00318202 rotr s0, s1, 8");
284  COMPARE(rotr(t2, t3, 24),
285  "002b5602 rotr t2, t3, 24");
286  COMPARE(rotr(v0, v1, 31),
287  "002317c2 rotr v0, v1, 31");
288 
289  COMPARE(rotrv(a0, a1, a2),
290  "00c52046 rotrv a0, a1, a2");
291  COMPARE(rotrv(s0, s1, s2),
292  "02518046 rotrv s0, s1, s2");
293  COMPARE(rotrv(t2, t3, t4),
294  "018b5046 rotrv t2, t3, t4");
295  COMPARE(rotrv(v0, v1, fp),
296  "03c31046 rotrv v0, v1, fp");
297  }
298 
299  COMPARE(break_(0),
300  "0000000d break, code: 0x00000 (0)");
301  COMPARE(break_(261120),
302  "00ff000d break, code: 0x3fc00 (261120)");
303  COMPARE(break_(1047552),
304  "03ff000d break, code: 0xffc00 (1047552)");
305 
306  COMPARE(tge(a0, a1, 0),
307  "00850030 tge a0, a1, code: 0x000");
308  COMPARE(tge(s0, s1, 1023),
309  "0211fff0 tge s0, s1, code: 0x3ff");
310  COMPARE(tgeu(a0, a1, 0),
311  "00850031 tgeu a0, a1, code: 0x000");
312  COMPARE(tgeu(s0, s1, 1023),
313  "0211fff1 tgeu s0, s1, code: 0x3ff");
314  COMPARE(tlt(a0, a1, 0),
315  "00850032 tlt a0, a1, code: 0x000");
316  COMPARE(tlt(s0, s1, 1023),
317  "0211fff2 tlt s0, s1, code: 0x3ff");
318  COMPARE(tltu(a0, a1, 0),
319  "00850033 tltu a0, a1, code: 0x000");
320  COMPARE(tltu(s0, s1, 1023),
321  "0211fff3 tltu s0, s1, code: 0x3ff");
322  COMPARE(teq(a0, a1, 0),
323  "00850034 teq a0, a1, code: 0x000");
324  COMPARE(teq(s0, s1, 1023),
325  "0211fff4 teq s0, s1, code: 0x3ff");
326  COMPARE(tne(a0, a1, 0),
327  "00850036 tne a0, a1, code: 0x000");
328  COMPARE(tne(s0, s1, 1023),
329  "0211fff6 tne s0, s1, code: 0x3ff");
330 
331  COMPARE(mfhi(a0),
332  "00002010 mfhi a0");
333  COMPARE(mfhi(s2),
334  "00009010 mfhi s2");
335  COMPARE(mfhi(t4),
336  "00006010 mfhi t4");
337  COMPARE(mfhi(v1),
338  "00001810 mfhi v1");
339  COMPARE(mflo(a0),
340  "00002012 mflo a0");
341  COMPARE(mflo(s2),
342  "00009012 mflo s2");
343  COMPARE(mflo(t4),
344  "00006012 mflo t4");
345  COMPARE(mflo(v1),
346  "00001812 mflo v1");
347 
348  COMPARE(slt(a0, a1, a2),
349  "00a6202a slt a0, a1, a2");
350  COMPARE(slt(s0, s1, s2),
351  "0232802a slt s0, s1, s2");
352  COMPARE(slt(t2, t3, t4),
353  "016c502a slt t2, t3, t4");
354  COMPARE(slt(v0, v1, a2),
355  "0066102a slt v0, v1, a2");
356  COMPARE(sltu(a0, a1, a2),
357  "00a6202b sltu a0, a1, a2");
358  COMPARE(sltu(s0, s1, s2),
359  "0232802b sltu s0, s1, s2");
360  COMPARE(sltu(t2, t3, t4),
361  "016c502b sltu t2, t3, t4");
362  COMPARE(sltu(v0, v1, a2),
363  "0066102b sltu v0, v1, a2");
364 
365  COMPARE(slti(a0, a1, 0),
366  "28a40000 slti a0, a1, 0");
367  COMPARE(slti(s0, s1, 32767),
368  "2a307fff slti s0, s1, 32767");
369  COMPARE(slti(t2, t3, -32768),
370  "296a8000 slti t2, t3, -32768");
371  COMPARE(slti(v0, v1, -1),
372  "2862ffff slti v0, v1, -1");
373  COMPARE(sltiu(a0, a1, 0),
374  "2ca40000 sltiu a0, a1, 0");
375  COMPARE(sltiu(s0, s1, 32767),
376  "2e307fff sltiu s0, s1, 32767");
377  COMPARE(sltiu(t2, t3, -32768),
378  "2d6a8000 sltiu t2, t3, -32768");
379  COMPARE(sltiu(v0, v1, -1),
380  "2c62ffff sltiu v0, v1, -1");
381 
382  if (kArchVariant != kLoongson) {
383  COMPARE(movz(a0, a1, a2),
384  "00a6200a movz a0, a1, a2");
385  COMPARE(movz(s0, s1, s2),
386  "0232800a movz s0, s1, s2");
387  COMPARE(movz(t2, t3, t4),
388  "016c500a movz t2, t3, t4");
389  COMPARE(movz(v0, v1, a2),
390  "0066100a movz v0, v1, a2");
391  COMPARE(movn(a0, a1, a2),
392  "00a6200b movn a0, a1, a2");
393  COMPARE(movn(s0, s1, s2),
394  "0232800b movn s0, s1, s2");
395  COMPARE(movn(t2, t3, t4),
396  "016c500b movn t2, t3, t4");
397  COMPARE(movn(v0, v1, a2),
398  "0066100b movn v0, v1, a2");
399 
400  COMPARE(movt(a0, a1, 1),
401  "00a52001 movt a0, a1, 1");
402  COMPARE(movt(s0, s1, 2),
403  "02298001 movt s0, s1, 2");
404  COMPARE(movt(t2, t3, 3),
405  "016d5001 movt t2, t3, 3");
406  COMPARE(movt(v0, v1, 7),
407  "007d1001 movt v0, v1, 7");
408  COMPARE(movf(a0, a1, 0),
409  "00a02001 movf a0, a1, 0");
410  COMPARE(movf(s0, s1, 4),
411  "02308001 movf s0, s1, 4");
412  COMPARE(movf(t2, t3, 5),
413  "01745001 movf t2, t3, 5");
414  COMPARE(movf(v0, v1, 6),
415  "00781001 movf v0, v1, 6");
416 
417  COMPARE(clz(a0, a1),
418  "70a42020 clz a0, a1");
419  COMPARE(clz(s6, s7),
420  "72f6b020 clz s6, s7");
421  COMPARE(clz(v0, v1),
422  "70621020 clz v0, v1");
423  }
424 
425  if (kArchVariant == kMips32r2) {
426  COMPARE(ins_(a0, a1, 31, 1),
427  "7ca4ffc4 ins a0, a1, 31, 1");
428  COMPARE(ins_(s6, s7, 30, 2),
429  "7ef6ff84 ins s6, s7, 30, 2");
430  COMPARE(ins_(v0, v1, 0, 32),
431  "7c62f804 ins v0, v1, 0, 32");
432  COMPARE(ext_(a0, a1, 31, 1),
433  "7ca407c0 ext a0, a1, 31, 1");
434  COMPARE(ext_(s6, s7, 30, 2),
435  "7ef60f80 ext s6, s7, 30, 2");
436  COMPARE(ext_(v0, v1, 0, 32),
437  "7c62f800 ext v0, v1, 0, 32");
438  }
439 
440  VERIFY_RUN();
441 }
const SwVfpRegister s2
const SwVfpRegister s7
const SwVfpRegister s6
uint8_t byte
Definition: globals.h:156
T * start() const
Definition: utils.h:390
int InstructionDecode(v8::internal::Vector< char > buffer, byte *instruction)
bool DisassembleAndCompare(byte *pc, const char *compare_string)
const Register pc
const SwVfpRegister s0
#define VERIFY_RUN()
const SwVfpRegister s1
bool IsEmpty() const
Definition: v8.h:209
static Persistent< Context > New(ExtensionConfiguration *extensions=NULL, Handle< ObjectTemplate > global_template=Handle< ObjectTemplate >(), Handle< Value > global_object=Handle< Value >())
Definition: api.cc:4411
const Register fp
#define SET_UP()
#define COMPARE(asm_, compare_string)