/*
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* Copyright (C) 2017 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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#pragma once
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#include "slicer/common.h"
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#include "slicer/code_ir.h"
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#include "slicer/dex_ir.h"
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#include "slicer/control_flow_graph.h"
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#include <memory>
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// Code IR formatting visitor
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class PrintCodeIrVisitor : public lir::Visitor {
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public:
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PrintCodeIrVisitor(std::shared_ptr<ir::DexFile> dex_ir, lir::ControlFlowGraph* cfg)
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: dex_ir_(dex_ir), cfg_(cfg) {}
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private:
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virtual bool Visit(lir::Bytecode* bytecode) override;
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virtual bool Visit(lir::PackedSwitchPayload* packed_switch) override;
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virtual bool Visit(lir::SparseSwitchPayload* sparse_switch) override;
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virtual bool Visit(lir::ArrayData* array_data) override;
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virtual bool Visit(lir::Label* label) override;
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virtual bool Visit(lir::CodeLocation* location) override;
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virtual bool Visit(lir::Const32* const32) override;
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virtual bool Visit(lir::Const64* const64) override;
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virtual bool Visit(lir::VReg* vreg) override;
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virtual bool Visit(lir::VRegPair* vreg_pair) override;
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virtual bool Visit(lir::VRegList* vreg_list) override;
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virtual bool Visit(lir::VRegRange* vreg_range) override;
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virtual bool Visit(lir::String* string) override;
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virtual bool Visit(lir::Type* type) override;
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virtual bool Visit(lir::Field* field) override;
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virtual bool Visit(lir::Method* method) override;
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virtual bool Visit(lir::LineNumber* line) override;
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virtual bool Visit(lir::DbgInfoHeader* dbg_header) override;
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virtual bool Visit(lir::DbgInfoAnnotation* dbg_annotation) override;
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virtual bool Visit(lir::TryBlockBegin* try_begin) override;
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virtual bool Visit(lir::TryBlockEnd* try_end) override;
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void StartInstruction(const lir::Instruction* instr);
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void EndInstruction(const lir::Instruction* instr);
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private:
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std::shared_ptr<ir::DexFile> dex_ir_;
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lir::ControlFlowGraph* cfg_ = nullptr;
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size_t current_block_index_ = 0;
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};
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// A .dex bytecode dissasembler using lir::CodeIr
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class DexDissasembler {
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public:
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// The type of CFG (Control Flow Graph) used by the dissasembler:
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// None - no CFG, plain listing
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// Compact - CFG with non-exceptional flow only
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// Verbose - CFG modeling the EH control flow too
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enum class CfgType { None, Compact, Verbose };
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public:
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explicit DexDissasembler(std::shared_ptr<ir::DexFile> dex_ir, CfgType cfg_type = CfgType::None)
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: dex_ir_(dex_ir), cfg_type_(cfg_type) {}
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DexDissasembler(const DexDissasembler&) = delete;
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DexDissasembler& operator=(const DexDissasembler&) = delete;
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void DumpAllMethods() const;
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void DumpMethod(ir::EncodedMethod* ir_method) const;
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private:
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void Dissasemble(ir::EncodedMethod* ir_method) const;
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private:
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std::shared_ptr<ir::DexFile> dex_ir_;
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CfgType cfg_type_ = CfgType::None;
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};
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