$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
		$2 ~ /^(SCM_SRCRT)$/ {next}
		$2 ~ /^(MAP_FAILED)$/ {next}
		$2 ~ /^CLONE_[A-Z_]+/ {next} # These are defined in exec_linux.go.
		$2 ~ /^ELF_.*$/ {next}	# <asm/elf.h> contains ELF_ARCH, etc.

		$2 !~ /^ETH_/ &&
		$2 !~ /^EPROC_/ &&
		$2 !~ /^EQUIV_/ &&
		$2 !~ /^EXPR_/ &&
		$2 ~ /^E[A-Z0-9_]+$/ ||
		$2 ~ /^B[0-9_]+$/ ||
		$2 ~ /^V[A-Z0-9]+$/ ||

	defer fi.Close()

	elfFile, err := elf.NewFile(fi)
	if err != nil {
		t.Skip("The system may not support ELF, skipped.")
	}
	defer elfFile.Close()

	// List of interesting sections. Here "interesting" means progbits/dynamic
	// and loadable (has an address), nonzero size.
	secs := []*elf.Section{}
	for _, s := range elfFile.Sections {
		if s.Type != elf.SHT_PROGBITS && s.Type != elf.SHT_DYNAMIC {
			continue
		}

		$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next}  # 386 registers
		$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
		$2 ~ /^(SCM_SRCRT)$/ {next}
		$2 ~ /^(MAP_FAILED)$/ {next}
		$2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.

		$2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
		$2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}

		$2 !~ /^ECCAPBITS/ &&
		$2 !~ /^ETH_/ &&
		$2 !~ /^EPROC_/ &&

	case objabi.R_POWER_TLS_LE:
		out.Write64(uint64(elf.R_PPC64_TPREL16_HA) | uint64(elfsym)<<32)
		out.Write64(uint64(r.Xadd))
		out.Write64(uint64(sectoff + 4))
		out.Write64(uint64(elf.R_PPC64_TPREL16_LO) | uint64(elfsym)<<32)
	case objabi.R_POWER_TLS_LE_TPREL34:
		out.Write64(uint64(elf.R_PPC64_TPREL34) | uint64(elfsym)<<32)
	case objabi.R_POWER_TLS_IE_PCREL34:

// prologue.
func isNOTOCfunc(name string) bool {
	switch {
	case name == "runtime.duffzero":
		return true
	case name == "runtime.duffcopy":
		return true
	case strings.HasPrefix(name, "runtime.elf_"):
		return true
	default:
		return false
	}
}

// Try converting FMOVD/FMOVS to XXSPLTIDP. If it is converted,
// return true.
func convertFMOVtoXXSPLTIDP(p *obj.Prog) bool {

			switch sect.Flags & (elf.SHF_WRITE | elf.SHF_ALLOC | elf.SHF_EXECINSTR) {
			case elf.SHF_ALLOC | elf.SHF_EXECINSTR:
				sym.Code = 'T'
			case elf.SHF_ALLOC:
				sym.Code = 'R'
			case elf.SHF_ALLOC | elf.SHF_WRITE:
				sym.Code = 'D'
			}
		}
		if elf.ST_BIND(s.Info) == elf.STB_LOCAL {
			sym.Code += 'a' - 'A'
		}
		syms = append(syms, sym)
	}

	return syms, nil
}

import (
	"encoding/binary"
	"errors"
	"fmt"
	"os"
)

var (
	errBadELF    = errors.New("malformed ELF binary")
	errNoBuildID = errors.New("no NT_GNU_BUILD_ID found in ELF binary")
)

// elfBuildID returns the GNU build ID of the named ELF binary,
// without introducing a dependency on debug/elf and its dependencies.
func elfBuildID(file string) (string, error) {
	buf := make([]byte, 256)
	f, err := os.Open(file)

		eh.Ident[elf.EI_CLASS] = byte(elf.ELFCLASS32)
	}
	if ctxt.Arch.ByteOrder == binary.BigEndian {
		eh.Ident[elf.EI_DATA] = byte(elf.ELFDATA2MSB)
	} else {
		eh.Ident[elf.EI_DATA] = byte(elf.ELFDATA2LSB)
	}
	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 {

}

func TestTypedefsELF(t *testing.T) {
	testTypedefs(t, elfData(t, "testdata/typedef.elf"), "elf", typedefTests)
}

func TestTypedefsMachO(t *testing.T) {
	testTypedefs(t, machoData(t, "testdata/typedef.macho"), "macho", typedefTests)
}

func TestTypedefsELFDwarf4(t *testing.T) {
	testTypedefs(t, elfData(t, "testdata/typedef.elf4"), "elf", typedefTests)
}

 * $FreeBSD: src/sys/i386/include/elf.h,v 1.16 2004/08/02 19:12:17 dfr Exp $
 * $FreeBSD: src/sys/powerpc/include/elf.h,v 1.7 2004/11/02 09:47:01 ssouhlal Exp $
 * $FreeBSD: src/sys/sparc64/include/elf.h,v 1.12 2003/09/25 01:10:26 peter Exp $
 * "System V ABI" (http://www.sco.com/developers/gabi/latest/ch4.eheader.html)
 * "ELF for the ARM® 64-bit Architecture (AArch64)" (ARM IHI 0056B)