IBCS2_SIGNO_MASK   80 compat/ibcs2/ibcs2_signal.h #define IBCS2_SIGNO(x)		((x) & IBCS2_SIGNO_MASK)
IBCS2_SIGNO_MASK   81 compat/ibcs2/ibcs2_signal.h #define IBCS2_SIGCALL(x)	((x) & ~IBCS2_SIGNO_MASK)