72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
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#define ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
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#include "base/macros.h"
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#include "dex_instruction.h"
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namespace art {
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template<typename T>
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class DexInstructionVisitor {
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public:
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void Visit(const uint16_t* code, size_t size_in_bytes) {
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T* derived = static_cast<T*>(this);
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size_t size_in_code_units = size_in_bytes / sizeof(uint16_t);
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size_t i = 0;
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while (i < size_in_code_units) {
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const Instruction* inst = Instruction::At(&code[i]);
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switch (inst->Opcode()) {
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#define INSTRUCTION_CASE(o, cname, p, f, r, i, a, v) \
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case Instruction::cname: { \
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derived->Do_ ## cname(inst); \
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break; \
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}
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#include "dex_instruction_list.h"
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DEX_INSTRUCTION_LIST(INSTRUCTION_CASE)
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#undef DEX_INSTRUCTION_LIST
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#undef INSTRUCTION_CASE
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default:
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CHECK(false);
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}
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i += inst->SizeInCodeUnits();
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}
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}
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private:
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// Specific handlers for each instruction.
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#define INSTRUCTION_VISITOR(o, cname, p, f, r, i, a, v) \
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void Do_ ## cname(const Instruction* inst) { \
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T* derived = static_cast<T*>(this); \
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derived->Do_Default(inst); \
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}
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#include "dex_instruction_list.h"
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DEX_INSTRUCTION_LIST(INSTRUCTION_VISITOR)
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#undef DEX_INSTRUCTION_LIST
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#undef INSTRUCTION_VISITOR
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// The default instruction handler.
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void Do_Default(const Instruction*) {
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return;
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}
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};
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} // namespace art
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#endif // ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
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