1 // Copyright 2011 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
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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 #include <stdlib.h>
29
30 #include "v8.h"
31
32 #include "debug.h"
33 #include "disasm.h"
34 #include "disassembler.h"
35 #include "macro-assembler.h"
36 #include "serialize.h"
37 #include "cctest.h"
38
39 using namespace v8::internal;
40
41 static v8::Persistent<v8::Context> env;
42
InitializeVM()43 static void InitializeVM() {
44 if (env.IsEmpty()) {
45 env = v8::Context::New();
46 }
47 }
48
49
50 #define __ assm.
51
52
DummyStaticFunction(Object * result)53 static void DummyStaticFunction(Object* result) {
54 }
55
56
TEST(DisasmIa320)57 TEST(DisasmIa320) {
58 InitializeVM();
59 v8::HandleScope scope;
60 v8::internal::byte buffer[2048];
61 Assembler assm(Isolate::Current(), buffer, sizeof buffer);
62 DummyStaticFunction(NULL); // just bloody use it (DELETE; debugging)
63
64 // Short immediate instructions
65 __ adc(eax, 12345678);
66 __ add(eax, Immediate(12345678));
67 __ or_(eax, 12345678);
68 __ sub(eax, Immediate(12345678));
69 __ xor_(eax, 12345678);
70 __ and_(eax, 12345678);
71 Handle<FixedArray> foo = FACTORY->NewFixedArray(10, TENURED);
72 __ cmp(eax, foo);
73
74 // ---- This one caused crash
75 __ mov(ebx, Operand(esp, ecx, times_2, 0)); // [esp+ecx*4]
76
77 // ---- All instructions that I can think of
78 __ add(edx, ebx);
79 __ add(edx, Operand(12, RelocInfo::NONE));
80 __ add(edx, Operand(ebx, 0));
81 __ add(edx, Operand(ebx, 16));
82 __ add(edx, Operand(ebx, 1999));
83 __ add(edx, Operand(esp, 0));
84 __ add(edx, Operand(esp, 16));
85 __ add(edx, Operand(esp, 1999));
86 __ nop();
87 __ add(edi, Operand(ebp, ecx, times_4, 0));
88 __ add(edi, Operand(ebp, ecx, times_4, 12));
89 __ add(Operand(ebp, ecx, times_4, 12), Immediate(12));
90
91 __ nop();
92 __ add(ebx, Immediate(12));
93 __ nop();
94 __ adc(ecx, 12);
95 __ adc(ecx, 1000);
96 __ nop();
97 __ and_(edx, 3);
98 __ and_(edx, Operand(esp, 4));
99 __ cmp(edx, 3);
100 __ cmp(edx, Operand(esp, 4));
101 __ cmp(Operand(ebp, ecx, times_4, 0), Immediate(1000));
102 Handle<FixedArray> foo2 = FACTORY->NewFixedArray(10, TENURED);
103 __ cmp(ebx, foo2);
104 __ cmpb(ebx, Operand(ebp, ecx, times_2, 0));
105 __ cmpb(Operand(ebp, ecx, times_2, 0), ebx);
106 __ or_(edx, 3);
107 __ xor_(edx, 3);
108 __ nop();
109 {
110 CHECK(CpuFeatures::IsSupported(CPUID));
111 CpuFeatures::Scope fscope(CPUID);
112 __ cpuid();
113 }
114 {
115 CHECK(CpuFeatures::IsSupported(RDTSC));
116 CpuFeatures::Scope fscope(RDTSC);
117 __ rdtsc();
118 }
119 __ movsx_b(edx, ecx);
120 __ movsx_w(edx, ecx);
121 __ movzx_b(edx, ecx);
122 __ movzx_w(edx, ecx);
123
124 __ nop();
125 __ imul(edx, ecx);
126 __ shld(edx, ecx);
127 __ shrd(edx, ecx);
128 __ bts(edx, ecx);
129 __ bts(Operand(ebx, ecx, times_4, 0), ecx);
130 __ nop();
131 __ pushad();
132 __ popad();
133 __ pushfd();
134 __ popfd();
135 __ push(Immediate(12));
136 __ push(Immediate(23456));
137 __ push(ecx);
138 __ push(esi);
139 __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
140 __ push(Operand(ebx, ecx, times_4, 0));
141 __ push(Operand(ebx, ecx, times_4, 0));
142 __ push(Operand(ebx, ecx, times_4, 10000));
143 __ pop(edx);
144 __ pop(eax);
145 __ pop(Operand(ebx, ecx, times_4, 0));
146 __ nop();
147
148 __ add(edx, Operand(esp, 16));
149 __ add(edx, ecx);
150 __ mov_b(edx, ecx);
151 __ mov_b(ecx, 6);
152 __ mov_b(Operand(ebx, ecx, times_4, 10000), 6);
153 __ mov_b(Operand(esp, 16), edx);
154 __ mov_w(edx, Operand(esp, 16));
155 __ mov_w(Operand(esp, 16), edx);
156 __ nop();
157 __ movsx_w(edx, Operand(esp, 12));
158 __ movsx_b(edx, Operand(esp, 12));
159 __ movzx_w(edx, Operand(esp, 12));
160 __ movzx_b(edx, Operand(esp, 12));
161 __ nop();
162 __ mov(edx, 1234567);
163 __ mov(edx, Operand(esp, 12));
164 __ mov(Operand(ebx, ecx, times_4, 10000), Immediate(12345));
165 __ mov(Operand(ebx, ecx, times_4, 10000), edx);
166 __ nop();
167 __ dec_b(edx);
168 __ dec_b(Operand(eax, 10));
169 __ dec_b(Operand(ebx, ecx, times_4, 10000));
170 __ dec(edx);
171 __ cdq();
172
173 __ nop();
174 __ idiv(edx);
175 __ mul(edx);
176 __ neg(edx);
177 __ not_(edx);
178 __ test(Operand(ebx, ecx, times_4, 10000), Immediate(123456));
179
180 __ imul(edx, Operand(ebx, ecx, times_4, 10000));
181 __ imul(edx, ecx, 12);
182 __ imul(edx, ecx, 1000);
183
184 __ inc(edx);
185 __ inc(Operand(ebx, ecx, times_4, 10000));
186 __ push(Operand(ebx, ecx, times_4, 10000));
187 __ pop(Operand(ebx, ecx, times_4, 10000));
188 __ call(Operand(ebx, ecx, times_4, 10000));
189 __ jmp(Operand(ebx, ecx, times_4, 10000));
190
191 __ lea(edx, Operand(ebx, ecx, times_4, 10000));
192 __ or_(edx, 12345);
193 __ or_(edx, Operand(ebx, ecx, times_4, 10000));
194
195 __ nop();
196
197 __ rcl(edx, 1);
198 __ rcl(edx, 7);
199 __ rcr(edx, 1);
200 __ rcr(edx, 7);
201 __ sar(edx, 1);
202 __ sar(edx, 6);
203 __ sar_cl(edx);
204 __ sbb(edx, Operand(ebx, ecx, times_4, 10000));
205 __ shld(edx, Operand(ebx, ecx, times_4, 10000));
206 __ shl(edx, 1);
207 __ shl(edx, 6);
208 __ shl_cl(edx);
209 __ shrd(edx, Operand(ebx, ecx, times_4, 10000));
210 __ shr(edx, 1);
211 __ shr(edx, 7);
212 __ shr_cl(edx);
213
214
215 // Immediates
216
217 __ adc(edx, 12345);
218
219 __ add(ebx, Immediate(12));
220 __ add(Operand(edx, ecx, times_4, 10000), Immediate(12));
221
222 __ and_(ebx, 12345);
223
224 __ cmp(ebx, 12345);
225 __ cmp(ebx, Immediate(12));
226 __ cmp(Operand(edx, ecx, times_4, 10000), Immediate(12));
227 __ cmpb(eax, 100);
228
229 __ or_(ebx, 12345);
230
231 __ sub(ebx, Immediate(12));
232 __ sub(Operand(edx, ecx, times_4, 10000), Immediate(12));
233
234 __ xor_(ebx, 12345);
235
236 __ imul(edx, ecx, 12);
237 __ imul(edx, ecx, 1000);
238
239 __ cld();
240 __ rep_movs();
241 __ rep_stos();
242 __ stos();
243
244 __ sub(edx, Operand(ebx, ecx, times_4, 10000));
245 __ sub(edx, ebx);
246
247 __ test(edx, Immediate(12345));
248 __ test(edx, Operand(ebx, ecx, times_8, 10000));
249 __ test(Operand(esi, edi, times_1, -20000000), Immediate(300000000));
250 __ test_b(edx, Operand(ecx, ebx, times_2, 1000));
251 __ test_b(Operand(eax, -20), 0x9A);
252 __ nop();
253
254 __ xor_(edx, 12345);
255 __ xor_(edx, Operand(ebx, ecx, times_8, 10000));
256 __ bts(Operand(ebx, ecx, times_8, 10000), edx);
257 __ hlt();
258 __ int3();
259 __ ret(0);
260 __ ret(8);
261
262 // Calls
263
264 Label L1, L2;
265 __ bind(&L1);
266 __ nop();
267 __ call(&L1);
268 __ call(&L2);
269 __ nop();
270 __ bind(&L2);
271 __ call(Operand(ebx, ecx, times_4, 10000));
272 __ nop();
273 Handle<Code> ic(Isolate::Current()->builtins()->builtin(
274 Builtins::kLoadIC_Initialize));
275 __ call(ic, RelocInfo::CODE_TARGET);
276 __ nop();
277 __ call(FUNCTION_ADDR(DummyStaticFunction), RelocInfo::RUNTIME_ENTRY);
278 __ nop();
279
280 __ jmp(&L1);
281 __ jmp(Operand(ebx, ecx, times_4, 10000));
282 #ifdef ENABLE_DEBUGGER_SUPPORT
283 ExternalReference after_break_target =
284 ExternalReference(Debug_Address::AfterBreakTarget(),
285 assm.isolate());
286 __ jmp(Operand::StaticVariable(after_break_target));
287 #endif // ENABLE_DEBUGGER_SUPPORT
288 __ jmp(ic, RelocInfo::CODE_TARGET);
289 __ nop();
290
291
292 Label Ljcc;
293 __ nop();
294 // long jumps
295 __ j(overflow, &Ljcc);
296 __ j(no_overflow, &Ljcc);
297 __ j(below, &Ljcc);
298 __ j(above_equal, &Ljcc);
299 __ j(equal, &Ljcc);
300 __ j(not_equal, &Ljcc);
301 __ j(below_equal, &Ljcc);
302 __ j(above, &Ljcc);
303 __ j(sign, &Ljcc);
304 __ j(not_sign, &Ljcc);
305 __ j(parity_even, &Ljcc);
306 __ j(parity_odd, &Ljcc);
307 __ j(less, &Ljcc);
308 __ j(greater_equal, &Ljcc);
309 __ j(less_equal, &Ljcc);
310 __ j(greater, &Ljcc);
311 __ nop();
312 __ bind(&Ljcc);
313 // short jumps
314 __ j(overflow, &Ljcc);
315 __ j(no_overflow, &Ljcc);
316 __ j(below, &Ljcc);
317 __ j(above_equal, &Ljcc);
318 __ j(equal, &Ljcc);
319 __ j(not_equal, &Ljcc);
320 __ j(below_equal, &Ljcc);
321 __ j(above, &Ljcc);
322 __ j(sign, &Ljcc);
323 __ j(not_sign, &Ljcc);
324 __ j(parity_even, &Ljcc);
325 __ j(parity_odd, &Ljcc);
326 __ j(less, &Ljcc);
327 __ j(greater_equal, &Ljcc);
328 __ j(less_equal, &Ljcc);
329 __ j(greater, &Ljcc);
330
331 // 0xD9 instructions
332 __ nop();
333
334 __ fld(1);
335 __ fld1();
336 __ fldz();
337 __ fldpi();
338 __ fabs();
339 __ fchs();
340 __ fprem();
341 __ fprem1();
342 __ fincstp();
343 __ ftst();
344 __ fxch(3);
345 __ fld_s(Operand(ebx, ecx, times_4, 10000));
346 __ fstp_s(Operand(ebx, ecx, times_4, 10000));
347 __ ffree(3);
348 __ fld_d(Operand(ebx, ecx, times_4, 10000));
349 __ fstp_d(Operand(ebx, ecx, times_4, 10000));
350 __ nop();
351
352 __ fild_s(Operand(ebx, ecx, times_4, 10000));
353 __ fistp_s(Operand(ebx, ecx, times_4, 10000));
354 __ fild_d(Operand(ebx, ecx, times_4, 10000));
355 __ fistp_d(Operand(ebx, ecx, times_4, 10000));
356 __ fnstsw_ax();
357 __ nop();
358 __ fadd(3);
359 __ fsub(3);
360 __ fmul(3);
361 __ fdiv(3);
362
363 __ faddp(3);
364 __ fsubp(3);
365 __ fmulp(3);
366 __ fdivp(3);
367 __ fcompp();
368 __ fwait();
369 __ nop();
370 {
371 if (CpuFeatures::IsSupported(SSE2)) {
372 CpuFeatures::Scope fscope(SSE2);
373 __ cvttss2si(edx, Operand(ebx, ecx, times_4, 10000));
374 __ cvtsi2sd(xmm1, Operand(ebx, ecx, times_4, 10000));
375 __ addsd(xmm1, xmm0);
376 __ mulsd(xmm1, xmm0);
377 __ subsd(xmm1, xmm0);
378 __ divsd(xmm1, xmm0);
379 __ movdbl(xmm1, Operand(ebx, ecx, times_4, 10000));
380 __ movdbl(Operand(ebx, ecx, times_4, 10000), xmm1);
381 __ ucomisd(xmm0, xmm1);
382
383 // 128 bit move instructions.
384 __ movdqa(xmm0, Operand(ebx, ecx, times_4, 10000));
385 __ movdqa(Operand(ebx, ecx, times_4, 10000), xmm0);
386 __ movdqu(xmm0, Operand(ebx, ecx, times_4, 10000));
387 __ movdqu(Operand(ebx, ecx, times_4, 10000), xmm0);
388 }
389 }
390
391 // cmov.
392 {
393 if (CpuFeatures::IsSupported(CMOV)) {
394 CpuFeatures::Scope use_cmov(CMOV);
395 __ cmov(overflow, eax, Operand(eax, 0));
396 __ cmov(no_overflow, eax, Operand(eax, 1));
397 __ cmov(below, eax, Operand(eax, 2));
398 __ cmov(above_equal, eax, Operand(eax, 3));
399 __ cmov(equal, eax, Operand(ebx, 0));
400 __ cmov(not_equal, eax, Operand(ebx, 1));
401 __ cmov(below_equal, eax, Operand(ebx, 2));
402 __ cmov(above, eax, Operand(ebx, 3));
403 __ cmov(sign, eax, Operand(ecx, 0));
404 __ cmov(not_sign, eax, Operand(ecx, 1));
405 __ cmov(parity_even, eax, Operand(ecx, 2));
406 __ cmov(parity_odd, eax, Operand(ecx, 3));
407 __ cmov(less, eax, Operand(edx, 0));
408 __ cmov(greater_equal, eax, Operand(edx, 1));
409 __ cmov(less_equal, eax, Operand(edx, 2));
410 __ cmov(greater, eax, Operand(edx, 3));
411 }
412 }
413
414 // andpd, cmpltsd, movaps, psllq, psrlq, por.
415 {
416 if (CpuFeatures::IsSupported(SSE2)) {
417 CpuFeatures::Scope fscope(SSE2);
418 __ andpd(xmm0, xmm1);
419 __ andpd(xmm1, xmm2);
420
421 __ cmpltsd(xmm0, xmm1);
422 __ cmpltsd(xmm1, xmm2);
423
424 __ movaps(xmm0, xmm1);
425 __ movaps(xmm1, xmm2);
426
427 __ psllq(xmm0, 17);
428 __ psllq(xmm1, 42);
429
430 __ psllq(xmm0, xmm1);
431 __ psllq(xmm1, xmm2);
432
433 __ psrlq(xmm0, 17);
434 __ psrlq(xmm1, 42);
435
436 __ psrlq(xmm0, xmm1);
437 __ psrlq(xmm1, xmm2);
438
439 __ por(xmm0, xmm1);
440 __ por(xmm1, xmm2);
441 }
442 }
443
444 {
445 if (CpuFeatures::IsSupported(SSE4_1)) {
446 CpuFeatures::Scope scope(SSE4_1);
447 __ pextrd(eax, xmm0, 1);
448 __ pinsrd(xmm1, eax, 0);
449 }
450 }
451
452 // Nop instructions
453 for (int i = 0; i < 16; i++) {
454 __ Nop(i);
455 }
456
457 __ ret(0);
458
459 CodeDesc desc;
460 assm.GetCode(&desc);
461 Object* code = HEAP->CreateCode(
462 desc,
463 Code::ComputeFlags(Code::STUB),
464 Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
465 CHECK(code->IsCode());
466 #ifdef OBJECT_PRINT
467 Code::cast(code)->Print();
468 byte* begin = Code::cast(code)->instruction_start();
469 byte* end = begin + Code::cast(code)->instruction_size();
470 disasm::Disassembler::Disassemble(stdout, begin, end);
471 #endif
472 }
473
474 #undef __
475