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_/ &&

// 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 {

			return errorf("elf object but not 386")
		}

	case sys.PPC64:
		if mach != elf.EM_PPC64 || class != elf.ELFCLASS64 {
			return errorf("elf object but not ppc64")
		}

	case sys.RISCV64:
		if mach != elf.EM_RISCV || class != elf.ELFCLASS64 {
			return errorf("elf object but not riscv64")
		}

	case sys.S390X:
		if mach != elf.EM_S390 || class != elf.ELFCLASS64 {

					if s.Flags&elf.SHF_ALLOC == 0 {
						continue
					}
					switch s.Type {
					case elf.SHT_DYNSYM, elf.SHT_STRTAB, elf.SHT_REL, elf.SHT_RELA, elf.SHT_HASH, elf.SHT_GNU_HASH, elf.SHT_GNU_VERDEF, elf.SHT_GNU_VERNEED, elf.SHT_GNU_VERSYM:
						ret += s.Size
					}
					if s.Flags&elf.SHF_WRITE != 0 && (strings.Contains(s.Name, ".got") || strings.Contains(s.Name, ".plt")) {
						ret += s.Size
					}
				}
				return ret

				case 2:
					elfrel = elf.R_390_PC16DBL
				case 4:
					elfrel = elf.R_390_PC32DBL
				}
			} else {
				switch siz {
				case 2:
					elfrel = elf.R_390_PC16
				case 4:
					elfrel = elf.R_390_PC32
				case 8:
					elfrel = elf.R_390_PC64
				}
			}
		}
		if elfrel == elf.R_390_NONE {
			return false // unsupported size/dbl combination
		}

	// encountered on some versions of Solaris. See issue #14957.
	putelfsyment(ctxt.Out, putelfstr("go.go"), 0, 0, elf.ST_INFO(elf.STB_LOCAL, elf.STT_FILE), elf.SHN_ABS, 0)
	ctxt.numelfsym++

	bindings := []elf.SymBind{elf.STB_LOCAL, elf.STB_GLOBAL}
	for _, elfbind := range bindings {
		if elfbind == elf.STB_GLOBAL {
			elfglobalsymndx = ctxt.numelfsym
		}
		genelfsym(ctxt, elfbind)
	}
}

		//
		//  https://github.com/riscv-non-isa/riscv-elf-psabi-doc/releases/download/v1.0/riscv-abi.pdf
		//
		var hiRel, loRel elf.R_RISCV
		switch r.Type {
		case objabi.R_RISCV_CALL, objabi.R_RISCV_PCREL_ITYPE:
			hiRel, loRel = elf.R_RISCV_PCREL_HI20, elf.R_RISCV_PCREL_LO12_I
		case objabi.R_RISCV_PCREL_STYPE:
			hiRel, loRel = elf.R_RISCV_PCREL_HI20, elf.R_RISCV_PCREL_LO12_S
		case objabi.R_RISCV_TLS_IE:

	case objabi.R_ADDR, objabi.R_DWARFSECREF:
		if siz == 4 {
			out.Write32(uint32(elf.R_386_32) | uint32(elfsym)<<8)
		} else {
			return false
		}
	case objabi.R_GOTPCREL:
		if siz == 4 {
			out.Write32(uint32(elf.R_386_GOTPC))
			if ldr.SymName(r.Xsym) != "_GLOBAL_OFFSET_TABLE_" {
				out.Write32(uint32(sectoff))
				out.Write32(uint32(elf.R_386_GOT32) | uint32(elfsym)<<8)
			}
		} else {
			return false
		}

// section or nil if the segment cannot be found.
func FindTextProgHeader(f *elf.File) *elf.ProgHeader {
	for _, s := range f.Sections {
		if s.Name == ".text" {
			// Find the LOAD segment containing the .text section.
			for _, p := range f.Progs {
				if p.Type == elf.PT_LOAD && p.Flags&elf.PF_X != 0 && s.Addr >= p.Vaddr && s.Addr < p.Vaddr+p.Memsz {
					return &p.ProgHeader
				}
			}
		}