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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 #include "src/interpreter/bytecode-array-iterator.h" | 5 #include "src/interpreter/bytecode-array-iterator.h" |
| 6 | 6 |
| 7 #include "src/interpreter/interpreter-intrinsics.h" | |
| 8 #include "src/objects-inl.h" | 7 #include "src/objects-inl.h" |
| 9 | 8 |
| 10 namespace v8 { | 9 namespace v8 { |
| 11 namespace internal { | 10 namespace internal { |
| 12 namespace interpreter { | 11 namespace interpreter { |
| 13 | 12 |
| 14 BytecodeArrayIterator::BytecodeArrayIterator( | 13 BytecodeArrayIterator::BytecodeArrayIterator( |
| 15 Handle<BytecodeArray> bytecode_array) | 14 Handle<BytecodeArray> bytecode_array) |
| 16 : bytecode_array_(bytecode_array), | 15 : bytecode_array_(bytecode_array), |
| 17 bytecode_offset_(0), | 16 bytecode_offset_(0), |
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| 134 Bytecodes::GetOperandTypes(current_bytecode()); | 133 Bytecodes::GetOperandTypes(current_bytecode()); |
| 135 DCHECK(Bytecodes::IsRegisterOperandType(operand_types[operand_index])); | 134 DCHECK(Bytecodes::IsRegisterOperandType(operand_types[operand_index])); |
| 136 if (operand_types[operand_index + 1] == OperandType::kRegCount) { | 135 if (operand_types[operand_index + 1] == OperandType::kRegCount) { |
| 137 return GetRegisterCountOperand(operand_index + 1); | 136 return GetRegisterCountOperand(operand_index + 1); |
| 138 } else { | 137 } else { |
| 139 OperandType operand_type = operand_types[operand_index]; | 138 OperandType operand_type = operand_types[operand_index]; |
| 140 return Bytecodes::GetNumberOfRegistersRepresentedBy(operand_type); | 139 return Bytecodes::GetNumberOfRegistersRepresentedBy(operand_type); |
| 141 } | 140 } |
| 142 } | 141 } |
| 143 | 142 |
| 144 Runtime::FunctionId BytecodeArrayIterator::GetRuntimeIdOperand( | 143 uint32_t BytecodeArrayIterator::GetRuntimeIdOperand(int operand_index) const { |
| 145 int operand_index) const { | |
| 146 OperandType operand_type = | 144 OperandType operand_type = |
| 147 Bytecodes::GetOperandType(current_bytecode(), operand_index); | 145 Bytecodes::GetOperandType(current_bytecode(), operand_index); |
| 148 DCHECK(operand_type == OperandType::kRuntimeId); | 146 DCHECK(operand_type == OperandType::kRuntimeId); |
| 149 uint32_t raw_id = GetUnsignedOperand(operand_index, operand_type); | 147 return GetUnsignedOperand(operand_index, operand_type); |
| 150 return static_cast<Runtime::FunctionId>(raw_id); | |
| 151 } | |
| 152 | |
| 153 Runtime::FunctionId BytecodeArrayIterator::GetIntrinsicIdOperand( | |
| 154 int operand_index) const { | |
| 155 OperandType operand_type = | |
| 156 Bytecodes::GetOperandType(current_bytecode(), operand_index); | |
| 157 DCHECK(operand_type == OperandType::kIntrinsicId); | |
| 158 uint32_t raw_id = GetUnsignedOperand(operand_index, operand_type); | |
| 159 return IntrinsicsHelper::ToRuntimeId( | |
| 160 static_cast<IntrinsicsHelper::IntrinsicId>(raw_id)); | |
| 161 } | 148 } |
| 162 | 149 |
| 163 Handle<Object> BytecodeArrayIterator::GetConstantForIndexOperand( | 150 Handle<Object> BytecodeArrayIterator::GetConstantForIndexOperand( |
| 164 int operand_index) const { | 151 int operand_index) const { |
| 165 return FixedArray::get(bytecode_array()->constant_pool(), | 152 return FixedArray::get(bytecode_array()->constant_pool(), |
| 166 GetIndexOperand(operand_index), | 153 GetIndexOperand(operand_index), |
| 167 bytecode_array()->GetIsolate()); | 154 bytecode_array()->GetIsolate()); |
| 168 } | 155 } |
| 169 | 156 |
| 170 | 157 |
| 171 int BytecodeArrayIterator::GetJumpTargetOffset() const { | 158 int BytecodeArrayIterator::GetJumpTargetOffset() const { |
| 172 Bytecode bytecode = current_bytecode(); | 159 Bytecode bytecode = current_bytecode(); |
| 173 if (interpreter::Bytecodes::IsJumpImmediate(bytecode)) { | 160 if (interpreter::Bytecodes::IsJumpImmediate(bytecode)) { |
| 174 int relative_offset = GetImmediateOperand(0); | 161 int relative_offset = GetImmediateOperand(0); |
| 175 return current_offset() + relative_offset + current_prefix_offset(); | 162 return current_offset() + relative_offset + current_prefix_offset(); |
| 176 } else if (interpreter::Bytecodes::IsJumpConstant(bytecode)) { | 163 } else if (interpreter::Bytecodes::IsJumpConstant(bytecode)) { |
| 177 Smi* smi = Smi::cast(*GetConstantForIndexOperand(0)); | 164 Smi* smi = Smi::cast(*GetConstantForIndexOperand(0)); |
| 178 return current_offset() + smi->value() + current_prefix_offset(); | 165 return current_offset() + smi->value() + current_prefix_offset(); |
| 179 } else { | 166 } else { |
| 180 UNREACHABLE(); | 167 UNREACHABLE(); |
| 181 return kMinInt; | 168 return kMinInt; |
| 182 } | 169 } |
| 183 } | 170 } |
| 184 | 171 |
| 185 } // namespace interpreter | 172 } // namespace interpreter |
| 186 } // namespace internal | 173 } // namespace internal |
| 187 } // namespace v8 | 174 } // namespace v8 |
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