void sigill_handler(int signal, siginfo_t *siginfo, os_context_t *context);
void sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context);
void memory_fault_handler(int signal, siginfo_t *siginfo,
void sigill_handler(int signal, siginfo_t *siginfo, os_context_t *context);
void sigtrap_handler(int signal, siginfo_t *siginfo, os_context_t *context);
void memory_fault_handler(int signal, siginfo_t *siginfo,