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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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