ibcs2_sys_sigprocmask  448 compat/ibcs2/ibcs2_syscallargs.h int	ibcs2_sys_sigprocmask(struct proc *, void *, register_t *);
ibcs2_sys_sigprocmask  376 compat/ibcs2/ibcs2_sysent.c 	    ibcs2_sys_sigprocmask },		/* 168 = sigprocmask */