// includes the given file offset. It returns an error if it cannot identify a
// unique header.
func HeaderForFileOffset(headers []*elf.ProgHeader, fileOffset uint64) (*elf.ProgHeader, error) {
	var ph *elf.ProgHeader
	for _, h := range headers {
		if fileOffset >= h.Off && fileOffset < h.Off+h.Memsz {
			if ph != nil {
				// Assuming no other bugs, this can only happen if we have two or

		return elfexec.FindTextProgHeader(ef), nil
	}

	// Fetch all the loadable segments.
	var phdrs []elf.ProgHeader
	for i := range ef.Progs {
		if ef.Progs[i].Type == elf.PT_LOAD {
			phdrs = append(phdrs, ef.Progs[i].ProgHeader)
		}
	}
	// Some ELF files don't contain any loadable program segments, e.g. .ko
	// kernel modules. It's not an error to have no header in such cases.

		},
		size: int64(s.Size),
	}
}

// A ProgHeader represents a single ELF program header.
type ProgHeader struct {
	Type   ProgType
	Flags  ProgFlag
	Off    uint64
	Vaddr  uint64
	Paddr  uint64
	Filesz uint64
	Memsz  uint64
	Align  uint64
}

// A Prog represents a single ELF program header in an ELF binary.
type Prog struct {
	ProgHeader

	// Embed ReaderAt for ReadAt method.