}
		if ctxt.Arch.Family == sys.RISCV64 {
			ehdr.Flags = 0x4 /* RISCV Float ABI Double */
		}
		elf64 = true

		ehdr.Phoff = ELF64HDRSIZE      /* Must be ELF64HDRSIZE: first PHdr must follow ELF header */
		ehdr.Shoff = ELF64HDRSIZE      /* Will move as we add PHeaders */
		ehdr.Ehsize = ELF64HDRSIZE     /* Must be ELF64HDRSIZE */
		ehdr.Phentsize = ELF64PHDRSIZE /* Must be ELF64PHDRSIZE */

	{
		buf.Grow(0x55AF1C) // 3003468 + 40 * 65298

		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].