ttr_sysnum
int sysnum = rec->ttr_sysnum;
if (rec->ttr_sysnum > NSYSCALL) {
mdb_printf(" %-*d", TT_HDLR_WIDTH, rec->ttr_sysnum);
sys = &sysent32[rec->ttr_sysnum];
sys = &sysent[rec->ttr_sysnum];
stype, rec->ttr_sysnum);