sim_t(const char* isa, size_t _nprocs, bool halted, reg_t start_pc,
std::vector<std::pair<reg_t, mem_t*>> mems,
const std::vector<std::string>& args, const std::vector<int> hartids,
sim_t(const char* isa, size_t _nprocs, bool halted, reg_t start_pc,
std::vector<std::pair<reg_t, mem_t*>> mems,
const std::vector<std::string>& args, const std::vector<int> hartids,