}
		return start, nil
	case elf.ET_DYN:
		// The process mapping information, start = start of virtual address range,
		// and offset = offset in the executable file of the start address, tells us
		// that a runtime virtual address x maps to a file offset
		// fx = x - start + offset.
		if loadSegment == nil {
			return start - offset, nil
		}
		// Kernels compiled as PIE can be ET_DYN as well. Use heuristic, similar to

}

func checkPIE(t *testing.T, name string) {
	f, err := elf.Open(name)
	if err != nil {
		t.Fatal("elf.Open failed: ", err)
	}
	defer f.Close()
	if f.Type != elf.ET_DYN {
		t.Errorf("%s has type %v, want ET_DYN", name, f.Type)
	}
	if hasDynTag(f, elf.DT_TEXTREL) {
		t.Errorf("%s has DT_TEXTREL set", name)
	}
}

func TestTrivialPIE(t *testing.T) {

	switch runtime.GOOS {
	case "linux", "android", "freebsd":
		f, err := elf.Open(obj)
		if err != nil {
			t.Fatal(err)
		}
		defer f.Close()
		if f.Type != elf.ET_DYN {
			t.Errorf("PIE type must be ET_DYN, but %s", f.Type)
		}
	case "darwin", "ios":
		f, err := macho.Open(obj)
		if err != nil {
			t.Fatal(err)
		}
		defer f.Close()
		if f.Flags&macho.FlagDyldLink == 0 {

// Type is found in Header.Type.
type Type uint16

const (
	ET_NONE   Type = 0      /* Unknown type. */
	ET_REL    Type = 1      /* Relocatable. */
	ET_EXEC   Type = 2      /* Executable. */
	ET_DYN    Type = 3      /* Shared object. */
	ET_CORE   Type = 4      /* Core file. */
	ET_LOOS   Type = 0xfe00 /* First operating system specific. */
	ET_HIOS   Type = 0xfeff /* Last operating system-specific. */

	}
	eh.Ident[elf.EI_VERSION] = byte(elf.EV_CURRENT)

	if ctxt.LinkMode == LinkExternal {
		eh.Type = uint16(elf.ET_REL)
	} else if ctxt.BuildMode == BuildModePIE {
		eh.Type = uint16(elf.ET_DYN)
	} else {
		eh.Type = uint16(elf.ET_EXEC)
	}

	if ctxt.LinkMode != LinkExternal {
		eh.Entry = uint64(Entryvalue(ctxt))
	}

	eh.Version = uint32(elf.EV_CURRENT)

	if pph != nil {

		{"EM_XCORE", Const, 11},
		{"EM_XGATE", Const, 11},
		{"EM_XIMO16", Const, 11},
		{"EM_XTENSA", Const, 11},
		{"EM_Z80", Const, 11},
		{"EM_ZSP", Const, 11},
		{"ET_CORE", Const, 0},
		{"ET_DYN", Const, 0},
		{"ET_EXEC", Const, 0},
		{"ET_HIOS", Const, 0},
		{"ET_HIPROC", Const, 0},
		{"ET_LOOS", Const, 0},
		{"ET_LOPROC", Const, 0},
		{"ET_NONE", Const, 0},
		{"ET_REL", Const, 0},

pkg debug/elf, const EM_TRICORE Machine
pkg debug/elf, const EM_V800 Machine
pkg debug/elf, const EM_VPP500 Machine
pkg debug/elf, const EM_X86_64 Machine
pkg debug/elf, const ET_CORE Type
pkg debug/elf, const ET_DYN Type
pkg debug/elf, const ET_EXEC Type
pkg debug/elf, const ET_HIOS Type
pkg debug/elf, const ET_HIPROC Type
pkg debug/elf, const ET_LOOS Type
pkg debug/elf, const ET_LOPROC Type

pkg debug/elf, const EM_TRICORE = 44
pkg debug/elf, const EM_V800 = 36
pkg debug/elf, const EM_VPP500 = 17
pkg debug/elf, const EM_X86_64 = 62
pkg debug/elf, const ET_CORE = 4
pkg debug/elf, const ET_DYN = 3
pkg debug/elf, const ET_EXEC = 2
pkg debug/elf, const ET_HIOS = 65279
pkg debug/elf, const ET_HIPROC = 65535
pkg debug/elf, const ET_LOOS = 65024
pkg debug/elf, const ET_LOPROC = 65280