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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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467 | 467 |
468 // To prevent long attacker-controlled byte sequences, integer constants | 468 // To prevent long attacker-controlled byte sequences, integer constants |
469 // from the JavaScript source are loaded in two parts if they are larger | 469 // from the JavaScript source are loaded in two parts if they are larger |
470 // than 16 bits. | 470 // than 16 bits. |
471 static const int kMaxSmiInlinedBits = 16; | 471 static const int kMaxSmiInlinedBits = 16; |
472 bool IsUnsafeSmi(Handle<Object> value); | 472 bool IsUnsafeSmi(Handle<Object> value); |
473 // Load an integer constant x into a register target using | 473 // Load an integer constant x into a register target using |
474 // at most 16 bits of user-controlled data per assembly operation. | 474 // at most 16 bits of user-controlled data per assembly operation. |
475 void LoadUnsafeSmi(Register target, Handle<Object> value); | 475 void LoadUnsafeSmi(Register target, Handle<Object> value); |
476 | 476 |
477 void CallWithArguments(ZoneList<Expression*>* arguments, int position); | 477 void CallWithArguments(ZoneList<Expression*>* arguments, |
| 478 CallFunctionFlags flags, |
| 479 int position); |
478 | 480 |
479 // Use an optimized version of Function.prototype.apply that avoid | 481 // Use an optimized version of Function.prototype.apply that avoid |
480 // allocating the arguments object and just copies the arguments | 482 // allocating the arguments object and just copies the arguments |
481 // from the stack. | 483 // from the stack. |
482 void CallApplyLazy(Property* apply, | 484 void CallApplyLazy(Property* apply, |
483 Expression* receiver, | 485 Expression* receiver, |
484 VariableProxy* arguments, | 486 VariableProxy* arguments, |
485 int position); | 487 int position); |
486 | 488 |
487 void CheckStack(); | 489 void CheckStack(); |
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610 friend class Result; | 612 friend class Result; |
611 friend class FastCodeGenerator; | 613 friend class FastCodeGenerator; |
612 friend class CodeGenSelector; | 614 friend class CodeGenSelector; |
613 | 615 |
614 friend class CodeGeneratorPatcher; // Used in test-log-stack-tracer.cc | 616 friend class CodeGeneratorPatcher; // Used in test-log-stack-tracer.cc |
615 | 617 |
616 DISALLOW_COPY_AND_ASSIGN(CodeGenerator); | 618 DISALLOW_COPY_AND_ASSIGN(CodeGenerator); |
617 }; | 619 }; |
618 | 620 |
619 | 621 |
620 // ------------------------------------------------------------------------- | |
621 // Code stubs | |
622 // | |
623 // These independent code objects are created once, and used multiple | |
624 // times by generated code to perform common tasks, often the slow | |
625 // case of a JavaScript operation. They are all subclasses of CodeStub, | |
626 // which is declared in code-stubs.h. | |
627 class CallFunctionStub: public CodeStub { | |
628 public: | |
629 CallFunctionStub(int argc, InLoopFlag in_loop) | |
630 : argc_(argc), in_loop_(in_loop) { } | |
631 | |
632 void Generate(MacroAssembler* masm); | |
633 | |
634 private: | |
635 int argc_; | |
636 InLoopFlag in_loop_; | |
637 | |
638 #ifdef DEBUG | |
639 void Print() { PrintF("CallFunctionStub (args %d)\n", argc_); } | |
640 #endif | |
641 | |
642 Major MajorKey() { return CallFunction; } | |
643 int MinorKey() { return argc_; } | |
644 InLoopFlag InLoop() { return in_loop_; } | |
645 }; | |
646 | |
647 | |
648 class ToBooleanStub: public CodeStub { | |
649 public: | |
650 ToBooleanStub() { } | |
651 | |
652 void Generate(MacroAssembler* masm); | |
653 | |
654 private: | |
655 Major MajorKey() { return ToBoolean; } | |
656 int MinorKey() { return 0; } | |
657 }; | |
658 | |
659 | |
660 // Flag that indicates how to generate code for the stub GenericBinaryOpStub. | 622 // Flag that indicates how to generate code for the stub GenericBinaryOpStub. |
661 enum GenericBinaryFlags { | 623 enum GenericBinaryFlags { |
662 NO_GENERIC_BINARY_FLAGS = 0, | 624 NO_GENERIC_BINARY_FLAGS = 0, |
663 NO_SMI_CODE_IN_STUB = 1 << 0 // Omit smi code in stub. | 625 NO_SMI_CODE_IN_STUB = 1 << 0 // Omit smi code in stub. |
664 }; | 626 }; |
665 | 627 |
666 | 628 |
667 class GenericBinaryOpStub: public CodeStub { | 629 class GenericBinaryOpStub: public CodeStub { |
668 public: | 630 public: |
669 GenericBinaryOpStub(Token::Value op, | 631 GenericBinaryOpStub(Token::Value op, |
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776 bool ascii); | 738 bool ascii); |
777 | 739 |
778 // Should the stub check whether arguments are strings? | 740 // Should the stub check whether arguments are strings? |
779 bool string_check_; | 741 bool string_check_; |
780 }; | 742 }; |
781 | 743 |
782 | 744 |
783 } } // namespace v8::internal | 745 } } // namespace v8::internal |
784 | 746 |
785 #endif // V8_X64_CODEGEN_X64_H_ | 747 #endif // V8_X64_CODEGEN_X64_H_ |
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