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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 <cstdint> | 8 #include <cstdint> |
| 9 #include <iosfwd> | 9 #include <iosfwd> |
| 10 #include <string> | 10 #include <string> |
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| 865 return 3; | 865 return 3; |
| 866 case OperandType::kRegList: | 866 case OperandType::kRegList: |
| 867 case OperandType::kRegOutList: | 867 case OperandType::kRegOutList: |
| 868 UNREACHABLE(); | 868 UNREACHABLE(); |
| 869 default: | 869 default: |
| 870 return 0; | 870 return 0; |
| 871 } | 871 } |
| 872 UNREACHABLE(); | 872 UNREACHABLE(); |
| 873 } | 873 } |
| 874 | 874 |
| 875 // Returns the size of |operand_type| for |operand_scale|. | 875 // Returns the size of |operand| for |operand_scale|. |
| 876 static OperandSize SizeOfOperand(OperandType operand_type, | 876 static OperandSize SizeOfOperand(OperandType operand, OperandScale scale); |
| 877 OperandScale operand_scale) { | |
| 878 DCHECK_LE(operand_type, OperandType::kLast); | |
| 879 DCHECK_GE(operand_scale, OperandScale::kSingle); | |
| 880 DCHECK_LE(operand_scale, OperandScale::kLast); | |
| 881 STATIC_ASSERT(static_cast<int>(OperandScale::kQuadruple) == 4 && | |
| 882 OperandScale::kLast == OperandScale::kQuadruple); | |
| 883 int scale_index = static_cast<int>(operand_scale) >> 1; | |
| 884 return kOperandKindSizes[static_cast<size_t>(operand_type)][scale_index]; | |
| 885 } | |
| 886 | 877 |
| 887 // Returns true if |operand_type| is a runtime-id operand (kRuntimeId). | 878 // Returns true if |operand_type| is a runtime-id operand (kRuntimeId). |
| 888 static bool IsRuntimeIdOperandType(OperandType operand_type); | 879 static bool IsRuntimeIdOperandType(OperandType operand_type); |
| 889 | 880 |
| 890 // Returns true if |operand_type| is unsigned, false if signed. | 881 // Returns true if |operand_type| is unsigned, false if signed. |
| 891 static bool IsUnsignedOperandType(OperandType operand_type); | 882 static bool IsUnsignedOperandType(OperandType operand_type); |
| 892 | 883 |
| 893 // Returns true if a handler is generated for a bytecode at a given | 884 // Returns true if a handler is generated for a bytecode at a given |
| 894 // operand scale. All bytecodes have handlers at OperandScale::kSingle, | 885 // operand scale. All bytecodes have handlers at OperandScale::kSingle, |
| 895 // but only bytecodes with scalable operands have handlers with larger | 886 // but only bytecodes with scalable operands have handlers with larger |
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| 931 | 922 |
| 932 private: | 923 private: |
| 933 static const OperandType* const kOperandTypes[]; | 924 static const OperandType* const kOperandTypes[]; |
| 934 static const OperandTypeInfo* const kOperandTypeInfos[]; | 925 static const OperandTypeInfo* const kOperandTypeInfos[]; |
| 935 static const int kOperandCount[]; | 926 static const int kOperandCount[]; |
| 936 static const int kNumberOfRegisterOperands[]; | 927 static const int kNumberOfRegisterOperands[]; |
| 937 static const AccumulatorUse kAccumulatorUse[]; | 928 static const AccumulatorUse kAccumulatorUse[]; |
| 938 static const bool kIsScalable[]; | 929 static const bool kIsScalable[]; |
| 939 static const int kBytecodeSizes[][3]; | 930 static const int kBytecodeSizes[][3]; |
| 940 static const OperandSize* const kOperandSizes[][3]; | 931 static const OperandSize* const kOperandSizes[][3]; |
| 941 static OperandSize const kOperandKindSizes[][3]; | |
| 942 }; | 932 }; |
| 943 | 933 |
| 944 V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, | 934 V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, |
| 945 const Bytecode& bytecode); | 935 const Bytecode& bytecode); |
| 946 | 936 |
| 947 } // namespace interpreter | 937 } // namespace interpreter |
| 948 } // namespace internal | 938 } // namespace internal |
| 949 } // namespace v8 | 939 } // namespace v8 |
| 950 | 940 |
| 951 #endif // V8_INTERPRETER_BYTECODES_H_ | 941 #endif // V8_INTERPRETER_BYTECODES_H_ |
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