thr_sighndlrinfo
extern void thr_sighndlrinfo(void (**func)(), int *funcsize);
thr_sighndlrinfo((void (**)())&special_pc, &special_size);
extern void thr_sighndlrinfo(void (**)(), int *);
thr_sighndlrinfo(&sigfunc, &sigfuncsize);