ehdr.Phnum++
	}
	if elf64 {
		ehdr.Shoff += ELF64PHDRSIZE
	} else {
		ehdr.Shoff += ELF32PHDRSIZE
	}
	return e
}

func newElfShdr(name int64) *ElfShdr {
	e := new(ElfShdr)
	e.Name = uint32(name)
	e.shnum = elf.SectionIndex(ehdr.Shnum)
	if ehdr.Shnum >= NSECT {
		Errorf(nil, "too many shdrs")
	} else {
		shdr[ehdr.Shnum] = e
		ehdr.Shnum++
	}

	return e
}

	case 2: // big-endian
		byteOrder = binary.BigEndian
	}

	var shnum int
	var shoff, shentsize int64
	switch buf[4] {
	default:
		return "", errBadELF
	case 1: // 32-bit file header
		shoff = int64(byteOrder.Uint32(buf[32:]))
		shentsize = int64(byteOrder.Uint16(buf[46:]))
		if shentsize != 40 {
			return "", errBadELF
		}
		shnum = int(byteOrder.Uint16(buf[48:]))
	case 2: // 64-bit file header

	}
	if phoff < 0 {
		return nil, &FormatError{0, "invalid phoff", phoff}
	}

	if shoff == 0 && shnum != 0 {
		return nil, &FormatError{0, "invalid ELF shnum for shoff=0", shnum}
	}

	if shnum > 0 && shstrndx >= shnum {
		return nil, &FormatError{0, "invalid ELF shstrndx", shstrndx}
	}

	var wantPhentsize, wantShentsize int
	switch f.Class {
	case ELFCLASS32:

		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)
		elfobj.version = hdr.Version

// at least 4 kB out, in data.
func readELF(name string, f *os.File, data []byte) (buildid string, err error) {
	// Assume the note content is in the data, already read.
	// Rewrite the ELF header to set shoff and shnum to 0, so that we can pass
	// the data to elf.NewFile and it will decode the Prog list but not
	// try to read the section headers and the string table from disk.
	// That's a waste of I/O when all we care about is the Prog list

			ldr.Errorf(x, "missing section in putelfsym")
			return
		}
		if xosect.Elfsect == nil {
			ldr.Errorf(x, "missing ELF section in putelfsym")
			return
		}
		elfshnum = xosect.Elfsect.(*ElfShdr).shnum
	}

	sname := ldr.SymExtname(x)
	sname = mangleABIName(ctxt, ldr, x, sname)

	// One pass for each binding: elf.STB_LOCAL, elf.STB_GLOBAL,
	// maybe one day elf.STB_WEAK.
	bind := elf.STB_GLOBAL

	Ehsize    uint16          /* Size of ELF header in bytes. */
	Phentsize uint16          /* Size of program header entry. */
	Phnum     uint16          /* Number of program header entries. */
	Shentsize uint16          /* Size of section header entry. */
	Shnum     uint16          /* Number of section header entries. */
	Shstrndx  uint16          /* Section name strings section. */
}

// ELF32 Section header.

		h := Header32{
			Ident:     [16]byte{0x7F, 'E', 'L', 'F', 0x01, 0x01, 0x01},
			Type:      1,
			Machine:   3,
			Version:   1,
			Shoff:     0x2DD44C,
			Ehsize:    0x34,
			Shentsize: 0x28,
			Shnum:     0,
			Shstrndx:  0xFFFF,
		}
		binary.Write(&buf, binary.LittleEndian, h)

		// Zero out sections [1]~[65294].
		buf.Write(bytes.Repeat([]byte{0}, 0x13ED1C-binary.Size(h)))

		return
	}

	ldr := ctxt.loader
	for _, si := range dwarfp {
		s := si.secSym()
		sect := ldr.SymSect(si.secSym())
		putelfsectionsym(ctxt, ctxt.Out, s, sect.Elfsect.(*ElfShdr).shnum)
	}
}

// dwarfcompress compresses the DWARF sections. Relocations are applied
// on the fly. After this, dwarfp will contain a different (new) set of
// symbols, and sections may have been replaced.

			var hdr elf.Header64
			if err := binary.Read(bytes.NewReader(data), order, &hdr); err != nil {
				t.Error(err)
				continue
			}

			phoff := hdr.Phoff
			phnum := int(hdr.Phnum)
			phsize := uint64(hdr.Phentsize)

			for i := 0; i < phnum; i++ {
				var phdr elf.Prog64
				if err := binary.Read(bytes.NewReader(data[phoff:]), order, &phdr); err != nil {
					t.Error(err)
					continue
				}