emul_find_interp
if ((error = emul_find_interp(l, epp, itp)))
if ((error = emul_find_interp(l, epp, itp)))
if ((error = emul_find_interp(l, epp, itp)))
error = emul_find_interp(l, epp, path);
int emul_find_interp(struct lwp *, struct exec_package *, const char *);