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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/objects-inl.h" | 7 #include "src/objects-inl.h" |
8 | 8 |
9 namespace v8 { | 9 namespace v8 { |
10 namespace internal { | 10 namespace internal { |
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40 uint32_t BytecodeArrayIterator::GetRawOperand(int operand_index, | 40 uint32_t BytecodeArrayIterator::GetRawOperand(int operand_index, |
41 OperandType operand_type) const { | 41 OperandType operand_type) const { |
42 DCHECK_GE(operand_index, 0); | 42 DCHECK_GE(operand_index, 0); |
43 DCHECK_LT(operand_index, Bytecodes::NumberOfOperands(current_bytecode())); | 43 DCHECK_LT(operand_index, Bytecodes::NumberOfOperands(current_bytecode())); |
44 DCHECK_EQ(operand_type, | 44 DCHECK_EQ(operand_type, |
45 Bytecodes::GetOperandType(current_bytecode(), operand_index)); | 45 Bytecodes::GetOperandType(current_bytecode(), operand_index)); |
46 uint8_t* operand_start = | 46 uint8_t* operand_start = |
47 bytecode_array()->GetFirstBytecodeAddress() + bytecode_offset_ + | 47 bytecode_array()->GetFirstBytecodeAddress() + bytecode_offset_ + |
48 Bytecodes::GetOperandOffset(current_bytecode(), operand_index); | 48 Bytecodes::GetOperandOffset(current_bytecode(), operand_index); |
49 switch (Bytecodes::SizeOfOperand(operand_type)) { | 49 switch (Bytecodes::SizeOfOperand(operand_type)) { |
50 default: | |
51 case OperandSize::kNone: | |
52 UNREACHABLE(); | |
53 case OperandSize::kByte: | 50 case OperandSize::kByte: |
54 return static_cast<uint32_t>(*operand_start); | 51 return static_cast<uint32_t>(*operand_start); |
55 case OperandSize::kShort: | 52 case OperandSize::kShort: |
56 return ReadUnalignedUInt16(operand_start); | 53 return ReadUnalignedUInt16(operand_start); |
| 54 case OperandSize::kNone: |
| 55 UNREACHABLE(); |
57 } | 56 } |
| 57 return 0; |
58 } | 58 } |
59 | 59 |
60 | 60 |
61 int8_t BytecodeArrayIterator::GetImmediateOperand(int operand_index) const { | 61 int8_t BytecodeArrayIterator::GetImmediateOperand(int operand_index) const { |
62 uint32_t operand = GetRawOperand(operand_index, OperandType::kImm8); | 62 uint32_t operand = GetRawOperand(operand_index, OperandType::kImm8); |
63 return static_cast<int8_t>(operand); | 63 return static_cast<int8_t>(operand); |
64 } | 64 } |
65 | 65 |
66 | 66 |
67 int BytecodeArrayIterator::GetCountOperand(int operand_index) const { | 67 int BytecodeArrayIterator::GetCountOperand(int operand_index) const { |
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123 return current_offset() + smi->value(); | 123 return current_offset() + smi->value(); |
124 } else { | 124 } else { |
125 UNREACHABLE(); | 125 UNREACHABLE(); |
126 return kMinInt; | 126 return kMinInt; |
127 } | 127 } |
128 } | 128 } |
129 | 129 |
130 } // namespace interpreter | 130 } // namespace interpreter |
131 } // namespace internal | 131 } // namespace internal |
132 } // namespace v8 | 132 } // namespace v8 |
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