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/*
* Copyright (C) 2012 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_DISASSEMBLER_DISASSEMBLER_H_
#define ART_DISASSEMBLER_DISASSEMBLER_H_
#include <stdint.h>
#include <iosfwd>
#include "arch/instruction_set.h"
#include "base/macros.h"
namespace art {
class DisassemblerOptions {
public:
// Should the disassembler print absolute or relative addresses.
const bool absolute_addresses_;
// Base addess for calculating relative code offsets when absolute_addresses_ is false.
const uint8_t* const base_address_;
// If set, the disassembler is allowed to look at load targets in literal
// pools.
const bool can_read_literals_;
DisassemblerOptions(bool absolute_addresses, const uint8_t* base_address,
bool can_read_literals)
: absolute_addresses_(absolute_addresses), base_address_(base_address),
can_read_literals_(can_read_literals) {}
private:
DISALLOW_COPY_AND_ASSIGN(DisassemblerOptions);
};
class Disassembler {
public:
// Creates a Disassembler for the given InstructionSet with the
// non-null DisassemblerOptions which become owned by the
// Disassembler.
static Disassembler* Create(InstructionSet instruction_set, DisassemblerOptions* options);
virtual ~Disassembler() {
delete disassembler_options_;
}
// Dump a single instruction returning the length of that instruction.
virtual size_t Dump(std::ostream& os, const uint8_t* begin) = 0;
// Dump instructions within a range.
virtual void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) = 0;
protected:
explicit Disassembler(DisassemblerOptions* disassembler_options)
: disassembler_options_(disassembler_options) {
CHECK(disassembler_options_ != nullptr);
}
std::string FormatInstructionPointer(const uint8_t* begin);
private:
DisassemblerOptions* disassembler_options_;
DISALLOW_COPY_AND_ASSIGN(Disassembler);
};
static inline bool HasBitSet(uint32_t value, uint32_t bit) {
return (value & (1 << bit)) != 0;
}
} // namespace art
#endif // ART_DISASSEMBLER_DISASSEMBLER_H_
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