puthdr
__elfN(puthdr)(p->td, hdr, hdrsize, numsegs, notesz, flags);
__elfN(puthdr)(struct thread *td, void *hdr, size_t hdrsize, int numsegs,
void __elfN(puthdr)(struct thread *, void *, size_t, int, size_t, int);
static void puthdr(int, struct hdr *);
puthdr(fdo, &ohdr);