riscv/extension.h


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#ifndef _RISCV_COPROCESSOR_H
#define _RISCV_COPROCESSOR_H

#include "processor.h"
#include <map>
#include <string>
#include <vector>
#include <functional>

class extension_t
{
 public:
  virtual std::vector<insn_desc_t> get_instructions() = 0;
  virtual const char* name() = 0;
  virtual ~extension_t();

  void set_processor(processor_t* _p) { p = _p; }
 protected:
  processor_t* p;

  void illegal_instruction();
  void raise_interrupt();
  void clear_interrupt();
};

std::map<std::string, std::function<extension_t*()>>& extensions();

#define REGISTER_EXTENSION(name, constructor) \
  class register_##name { \
    public: register_##name() { extensions()[#name] = constructor; } \
  }; static register_##name dummy_##name;

#endif