SYS_sigprocmask
case SYS_sigprocmask:
case SYS_sigprocmask: /* set both if either */
sysx = SYS_sigprocmask;
if ((err = __systemcall(rval, SYS_sigprocmask + 1024,
s10_emulation_table[SYS_sigprocmask] = 1; /* 95 */