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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_TOOLS_DEXANALYZE_DEXANALYZE_BYTECODE_H_
#define ART_TOOLS_DEXANALYZE_DEXANALYZE_BYTECODE_H_
#include <array>
#include <vector>
#include <map>
#include "base/safe_map.h"
#include "dexanalyze_experiments.h"
#include "dex/code_item_accessors.h"
namespace art {
namespace dexanalyze {
enum BytecodeExperiment {
kExperimentInvoke,
kExperimentInstanceField,
kExperimentInstanceFieldSelf,
kExperimentStaticField,
kExperimentLocalType,
kExperimentReturn,
kExperimentSmallIf,
kExperimentString,
kExperimentSingleGetSet,
};
// Maps from global index to local index.
struct TypeLinkage {
// Referenced types.
SafeMap<size_t, size_t> types_;
// Owned fields.
SafeMap<size_t, size_t> fields_;
// Owned methods.
SafeMap<size_t, size_t> methods_;
// Referenced strings.
SafeMap<size_t, size_t> strings_;
};
class NewRegisterInstructions : public Experiment {
public:
explicit NewRegisterInstructions(uint64_t experiments)
: experiments_(experiments),
move_result_reg_(256),
first_arg_reg_count_(256),
opcode_count_(256) {}
void ProcessDexFiles(const std::vector<std::unique_ptr<const DexFile>>& dex_files);
void Dump(std::ostream& os, uint64_t total_size) const;
void ProcessCodeItem(const DexFile& dex_file,
const CodeItemDataAccessor& code_item,
dex::TypeIndex current_class_type,
bool count_types,
std::map<size_t, TypeLinkage>& types);
void Add(Instruction::Code opcode, const Instruction& inst);
bool InstNibbles(uint8_t opcode, const std::vector<uint32_t>& args);
bool ExtendPrefix(uint32_t* value1, uint32_t* value2);
bool Enabled(BytecodeExperiment experiment) const {
return experiments_ & (1u << static_cast<uint64_t>(experiment));
}
private:
size_t alignment_ = 1u;
uint64_t output_size_ = 0u;
uint64_t deduped_size_ = 0u;
uint64_t dex_code_bytes_ = 0u;
uint64_t experiments_ = std::numeric_limits<uint64_t>::max();
uint64_t extended_field_ = 0u;
uint64_t extended_method_ = 0u;
std::vector<size_t> move_result_reg_;
std::vector<size_t> first_arg_reg_count_;
std::vector<size_t> opcode_count_;
std::map<std::pair<uint32_t, uint32_t>, size_t> method_linkage_counts_;
std::map<std::pair<uint32_t, uint32_t>, size_t> field_linkage_counts_;
std::map<std::vector<uint8_t>, size_t> instruction_freq_;
// Output instruction buffer.
std::vector<uint8_t> buffer_;
};
} // namespace dexanalyze
} // namespace art
#endif // ART_TOOLS_DEXANALYZE_DEXANALYZE_BYTECODE_H_