}
	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

			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