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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_INTERPRETER_BYTECODES_H_ | 5 #ifndef V8_INTERPRETER_BYTECODES_H_ |
6 #define V8_INTERPRETER_BYTECODES_H_ | 6 #define V8_INTERPRETER_BYTECODES_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 | 9 |
10 // Clients of this interface shouldn't depend on lots of interpreter internals. | 10 // Clients of this interface shouldn't depend on lots of interpreter internals. |
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456 // constant pool entry (OperandType::kIdx16). | 456 // constant pool entry (OperandType::kIdx16). |
457 static bool IsJumpConstantWide(Bytecode bytecode); | 457 static bool IsJumpConstantWide(Bytecode bytecode); |
458 | 458 |
459 // Returns true if the bytecode is a jump or conditional jump taking | 459 // Returns true if the bytecode is a jump or conditional jump taking |
460 // any kind of operand. | 460 // any kind of operand. |
461 static bool IsJump(Bytecode bytecode); | 461 static bool IsJump(Bytecode bytecode); |
462 | 462 |
463 // Returns true if the bytecode is a conditional jump, a jump, or a return. | 463 // Returns true if the bytecode is a conditional jump, a jump, or a return. |
464 static bool IsJumpOrReturn(Bytecode bytecode); | 464 static bool IsJumpOrReturn(Bytecode bytecode); |
465 | 465 |
466 // Returns true if |operand_type| is a maybe register operand | 466 // Returns true if |operand_type| is a register index operand (kIdx8/kIdx16). |
467 // (kMaybeReg8/kMaybeReg16). | 467 static bool IsIndexOperandType(OperandType operand_type); |
468 static bool IsMaybeRegisterOperandType(OperandType operand_type); | 468 |
| 469 // Returns true if |operand_type| represents an immediate. |
| 470 static bool IsImmediateOperandType(OperandType operand_type); |
469 | 471 |
470 // Returns true if |operand_type| is a register count operand | 472 // Returns true if |operand_type| is a register count operand |
471 // (kRegCount8/kRegCount16). | 473 // (kRegCount8/kRegCount16). |
472 static bool IsRegisterCountOperandType(OperandType operand_type); | 474 static bool IsRegisterCountOperandType(OperandType operand_type); |
473 | 475 |
474 // Returns true if |operand_type| is any type of register operand. | 476 // Returns true if |operand_type| is any type of register operand. |
475 static bool IsRegisterOperandType(OperandType operand_type); | 477 static bool IsRegisterOperandType(OperandType operand_type); |
476 | 478 |
477 // Returns true if |operand_type| represents a register used as an input. | 479 // Returns true if |operand_type| represents a register used as an input. |
478 static bool IsRegisterInputOperandType(OperandType operand_type); | 480 static bool IsRegisterInputOperandType(OperandType operand_type); |
479 | 481 |
480 // Returns true if |operand_type| represents a register used as an output. | 482 // Returns true if |operand_type| represents a register used as an output. |
481 static bool IsRegisterOutputOperandType(OperandType operand_type); | 483 static bool IsRegisterOutputOperandType(OperandType operand_type); |
482 | 484 |
| 485 // Returns true if |operand_type| is a maybe register operand |
| 486 // (kMaybeReg8/kMaybeReg16). |
| 487 static bool IsMaybeRegisterOperandType(OperandType operand_type); |
| 488 |
483 // Decode a single bytecode and operands to |os|. | 489 // Decode a single bytecode and operands to |os|. |
484 static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start, | 490 static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start, |
485 int number_of_parameters); | 491 int number_of_parameters); |
486 | 492 |
487 private: | 493 private: |
488 DISALLOW_IMPLICIT_CONSTRUCTORS(Bytecodes); | 494 DISALLOW_IMPLICIT_CONSTRUCTORS(Bytecodes); |
489 }; | 495 }; |
490 | 496 |
491 std::ostream& operator<<(std::ostream& os, const Bytecode& bytecode); | 497 std::ostream& operator<<(std::ostream& os, const Bytecode& bytecode); |
492 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type); | 498 std::ostream& operator<<(std::ostream& os, const OperandType& operand_type); |
493 std::ostream& operator<<(std::ostream& os, const OperandSize& operand_type); | 499 std::ostream& operator<<(std::ostream& os, const OperandSize& operand_type); |
494 | 500 |
495 } // namespace interpreter | 501 } // namespace interpreter |
496 } // namespace internal | 502 } // namespace internal |
497 } // namespace v8 | 503 } // namespace v8 |
498 | 504 |
499 #endif // V8_INTERPRETER_BYTECODES_H_ | 505 #endif // V8_INTERPRETER_BYTECODES_H_ |
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