Theodosius/include/obf/transform/operation.hpp

#pragma once
#include <functional>
#include <map>

#define XED_ENCODER
extern "C" {
#include <xed-decode.h>
#include <xed-interface.h>
}

namespace theo::obf::transform {
using transform_t = std::function<std::size_t(std::size_t, std::size_t)>;

class operation_t {
 public:
  enum type_t { add_op, sub_op, and_op, or_op, rol_op, ror_op, xor_op };

  explicit operation_t(transform_t op, type_t type)
      : m_transform(op), m_type(type) {}

  virtual std::vector<std::uint8_t> native(xed_inst_t* inst,
                                           std::size_t imm) = 0;

  type_t inverse() { return m_inverse_op[m_type]; }
  transform_t get_transform() { return m_transform; }

 private:
  transform_t m_transform;
  type_t m_type;

  std::map<type_t, type_t> m_inverse_op = {
      {add_op, sub_op}, {sub_op, add_op}, {and_op, or_op}, {or_op, and_op},
      {rol_op, ror_op}, {ror_op, rol_op}, {xor_op, xor_op}};
};

}  // namespace theo::obf::transform