}
	if phnum > 0 && phentsize < wantPhentsize {
		return nil, &FormatError{0, "invalid ELF phentsize", phentsize}
	}

	// Read program headers
	f.Progs = make([]*Prog, phnum)
	phdata, err := saferio.ReadDataAt(sr, uint64(phnum)*uint64(phentsize), phoff)
	if err != nil {
		return nil, err
	}
	for i := 0; i < phnum; i++ {
		off := uintptr(i) * uintptr(phentsize)
		p := new(Prog)
		switch f.Class {

		elfobj.entry = hdr.Entry
		elfobj.phoff = hdr.Phoff
		elfobj.shoff = hdr.Shoff
		elfobj.flags = hdr.Flags
		elfobj.ehsize = uint32(hdr.Ehsize)
		elfobj.phentsize = uint32(hdr.Phentsize)
		elfobj.phnum = uint32(hdr.Phnum)
		elfobj.shentsize = uint32(hdr.Shentsize)
		elfobj.shnum = uint32(hdr.Shnum)
		elfobj.shstrndx = uint32(hdr.Shstrndx)
	} else {
		elfobj.type_ = uint32(hdr.Type)
		elfobj.machine = uint32(hdr.Machine)