/*
* 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_X86_H_
#define ART_DISASSEMBLER_DISASSEMBLER_X86_H_
#include "disassembler.h"
namespace art {
namespace x86 {
static constexpr uint8_t kMaxInstructionLength = 15 ;
enum RegFile { GPR, MMX, SSE, AVX };
class DisassemblerX86 final : public Disassembler {
public :
DisassemblerX86(DisassemblerOptions* options, bool supports_rex)
: Disassembler(options), supports_rex_(supports_rex) {}
size_t Dump(std::ostream& os, const uint8_t* begin) override;
void Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) override;
private :
struct InstructionContext {
DisassemblerX86* disassembler_;
bool has_vex_;
const uint8_t* orig_instr_;
const uint8_t* shadow_instr_;
uint8_t shadow_instr_buffer_[kMaxInstructionLength + 1 ];
bool hasVex() const { return has_vex_; }
struct VexPrefix {
uint8_t prefix_length_;
uint8_t shadow_prefix_length_;
uint8_t vector_length_;
uint8_t operand_;
bool ConvertToRex(const uint8_t* instr,
const uint8_t* instr_end,
/*out*/ uint8_t* decodeBuffer);
};
VexPrefix vex_;
InstructionContext(DisassemblerX86* disass, const uint8_t* instr);
};
size_t DumpNops(std::ostream& os, const uint8_t* instr);
size_t DumpInstruction(std::ostream& os, const uint8_t* instr);
std::string DumpAddress(uint8_t mod, uint8_t rm, uint8_t rex64, uint8_t rex_w, bool no_ops,
bool byte_operand, bool byte_second_operand, uint8_t* prefix, bool load,
RegFile src_reg_file, RegFile dst_reg_file, const uint8_t** instr,
uint32_t* address_bits);
const bool supports_rex_;
DISALLOW_COPY_AND_ASSIGN(DisassemblerX86);
};
} // namespace x86
} // namespace art
#endif // ART_DISASSEMBLER_DISASSEMBLER_X86_H_
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