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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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 |
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458 __ push(descriptor->register_params_[i]); | 458 __ push(descriptor->register_params_[i]); |
459 } | 459 } |
460 ExternalReference miss = descriptor->miss_handler(); | 460 ExternalReference miss = descriptor->miss_handler(); |
461 __ CallExternalReference(miss, descriptor->register_param_count_); | 461 __ CallExternalReference(miss, descriptor->register_param_count_); |
462 } | 462 } |
463 | 463 |
464 __ ret(0); | 464 __ ret(0); |
465 } | 465 } |
466 | 466 |
467 | 467 |
468 void FastNewBlockContextStub::Generate(MacroAssembler* masm) { | |
469 // Stack layout on entry: | |
470 // | |
471 // [esp + (1 * kPointerSize)]: function | |
472 // [esp + (2 * kPointerSize)]: serialized scope info | |
473 | |
474 // Try to allocate the context in new space. | |
475 Label gc; | |
476 int length = slots_ + Context::MIN_CONTEXT_SLOTS; | |
477 __ Allocate(FixedArray::SizeFor(length), eax, ebx, ecx, &gc, TAG_OBJECT); | |
478 | |
479 // Get the function or sentinel from the stack. | |
480 __ mov(ecx, Operand(esp, 1 * kPointerSize)); | |
481 | |
482 // Get the serialized scope info from the stack. | |
483 __ mov(ebx, Operand(esp, 2 * kPointerSize)); | |
484 | |
485 // Set up the object header. | |
486 Factory* factory = masm->isolate()->factory(); | |
487 __ mov(FieldOperand(eax, HeapObject::kMapOffset), | |
488 factory->block_context_map()); | |
489 __ mov(FieldOperand(eax, Context::kLengthOffset), | |
490 Immediate(Smi::FromInt(length))); | |
491 | |
492 // If this block context is nested in the native context we get a smi | |
493 // sentinel instead of a function. The block context should get the | |
494 // canonical empty function of the native context as its closure which | |
495 // we still have to look up. | |
496 Label after_sentinel; | |
497 __ JumpIfNotSmi(ecx, &after_sentinel, Label::kNear); | |
498 if (FLAG_debug_code) { | |
499 __ cmp(ecx, 0); | |
500 __ Assert(equal, kExpected0AsASmiSentinel); | |
501 } | |
502 __ mov(ecx, GlobalObjectOperand()); | |
503 __ mov(ecx, FieldOperand(ecx, GlobalObject::kNativeContextOffset)); | |
504 __ mov(ecx, ContextOperand(ecx, Context::CLOSURE_INDEX)); | |
505 __ bind(&after_sentinel); | |
506 | |
507 // Set up the fixed slots. | |
508 __ mov(ContextOperand(eax, Context::CLOSURE_INDEX), ecx); | |
509 __ mov(ContextOperand(eax, Context::PREVIOUS_INDEX), esi); | |
510 __ mov(ContextOperand(eax, Context::EXTENSION_INDEX), ebx); | |
511 | |
512 // Copy the global object from the previous context. | |
513 __ mov(ebx, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); | |
514 __ mov(ContextOperand(eax, Context::GLOBAL_OBJECT_INDEX), ebx); | |
515 | |
516 // Initialize the rest of the slots to the hole value. | |
517 if (slots_ == 1) { | |
518 __ mov(ContextOperand(eax, Context::MIN_CONTEXT_SLOTS), | |
519 factory->the_hole_value()); | |
520 } else { | |
521 __ mov(ebx, factory->the_hole_value()); | |
522 for (int i = 0; i < slots_; i++) { | |
523 __ mov(ContextOperand(eax, i + Context::MIN_CONTEXT_SLOTS), ebx); | |
524 } | |
525 } | |
526 | |
527 // Return and remove the on-stack parameters. | |
528 __ mov(esi, eax); | |
529 __ ret(2 * kPointerSize); | |
530 | |
531 // Need to collect. Call into runtime system. | |
532 __ bind(&gc); | |
533 __ TailCallRuntime(Runtime::kPushBlockContext, 2, 1); | |
534 } | |
535 | |
536 | |
537 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { | 468 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { |
538 // We don't allow a GC during a store buffer overflow so there is no need to | 469 // We don't allow a GC during a store buffer overflow so there is no need to |
539 // store the registers in any particular way, but we do have to store and | 470 // store the registers in any particular way, but we do have to store and |
540 // restore them. | 471 // restore them. |
541 __ pushad(); | 472 __ pushad(); |
542 if (save_doubles_ == kSaveFPRegs) { | 473 if (save_doubles_ == kSaveFPRegs) { |
543 CpuFeatureScope scope(masm, SSE2); | 474 CpuFeatureScope scope(masm, SSE2); |
544 __ sub(esp, Immediate(kDoubleSize * XMMRegister::kNumRegisters)); | 475 __ sub(esp, Immediate(kDoubleSize * XMMRegister::kNumRegisters)); |
545 for (int i = 0; i < XMMRegister::kNumRegisters; i++) { | 476 for (int i = 0; i < XMMRegister::kNumRegisters; i++) { |
546 XMMRegister reg = XMMRegister::from_code(i); | 477 XMMRegister reg = XMMRegister::from_code(i); |
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5496 restore_context ? | 5427 restore_context ? |
5497 &context_restore_operand : NULL); | 5428 &context_restore_operand : NULL); |
5498 } | 5429 } |
5499 | 5430 |
5500 | 5431 |
5501 #undef __ | 5432 #undef __ |
5502 | 5433 |
5503 } } // namespace v8::internal | 5434 } } // namespace v8::internal |
5504 | 5435 |
5505 #endif // V8_TARGET_ARCH_IA32 | 5436 #endif // V8_TARGET_ARCH_IA32 |
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