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Issue 1990133002: X87: Add cmpxchg and lock instructions to x64 and ia32 {dis,}assemblers. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 7 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
(...skipping 377 matching lines...) Expand 10 before | Expand all | Expand 10 after
388 __ nop(); 388 __ nop();
389 389
390 __ fldcw(Operand(ebx, ecx, times_4, 10000)); 390 __ fldcw(Operand(ebx, ecx, times_4, 10000));
391 __ fnstcw(Operand(ebx, ecx, times_4, 10000)); 391 __ fnstcw(Operand(ebx, ecx, times_4, 10000));
392 __ fadd_d(Operand(ebx, ecx, times_4, 10000)); 392 __ fadd_d(Operand(ebx, ecx, times_4, 10000));
393 __ fnsave(Operand(ebx, ecx, times_4, 10000)); 393 __ fnsave(Operand(ebx, ecx, times_4, 10000));
394 __ frstor(Operand(ebx, ecx, times_4, 10000)); 394 __ frstor(Operand(ebx, ecx, times_4, 10000));
395 395
396 // xchg. 396 // xchg.
397 { 397 {
398 __ xchg_b(eax, Operand(eax, 8));
399 __ xchg_w(eax, Operand(ebx, 8));
398 __ xchg(eax, eax); 400 __ xchg(eax, eax);
399 __ xchg(eax, ebx); 401 __ xchg(eax, ebx);
400 __ xchg(ebx, ebx); 402 __ xchg(ebx, ebx);
401 __ xchg(ebx, Operand(esp, 12)); 403 __ xchg(ebx, Operand(esp, 12));
402 } 404 }
403 405
406 // cmpxchg.
407 {
408 __ cmpxchg_b(Operand(esp, 12), eax);
409 __ cmpxchg_w(Operand(ebx, ecx, times_4, 10000), eax);
410 __ cmpxchg(Operand(ebx, ecx, times_4, 10000), eax);
411 }
412
413 // lock prefix.
414 {
415 __ lock();
416 __ cmpxchg(Operand(esp, 12), ebx);
417
418 __ lock();
419 __ xchg_w(eax, Operand(ecx, 8));
420 }
421
404 // Nop instructions 422 // Nop instructions
405 for (int i = 0; i < 16; i++) { 423 for (int i = 0; i < 16; i++) {
406 __ Nop(i); 424 __ Nop(i);
407 } 425 }
408 426
409 __ ret(0); 427 __ ret(0);
410 428
411 CodeDesc desc; 429 CodeDesc desc;
412 assm.GetCode(&desc); 430 assm.GetCode(&desc);
413 Handle<Code> code = isolate->factory()->NewCode( 431 Handle<Code> code = isolate->factory()->NewCode(
414 desc, Code::ComputeFlags(Code::STUB), Handle<Code>()); 432 desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
415 USE(code); 433 USE(code);
416 #ifdef OBJECT_PRINT 434 #ifdef OBJECT_PRINT
417 OFStream os(stdout); 435 OFStream os(stdout);
418 code->Print(os); 436 code->Print(os);
419 byte* begin = code->instruction_start(); 437 byte* begin = code->instruction_start();
420 byte* end = begin + code->instruction_size(); 438 byte* end = begin + code->instruction_size();
421 disasm::Disassembler::Disassemble(stdout, begin, end); 439 disasm::Disassembler::Disassemble(stdout, begin, end);
422 #endif 440 #endif
423 } 441 }
424 442
425 #undef __ 443 #undef __
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