// NB: fdSyms is used as scratch space.
func funcData(ldr *loader.Loader, s loader.Sym, fi loader.FuncInfo, inlSym loader.Sym, fdSyms []loader.Sym) []loader.Sym {
	fdSyms = fdSyms[:0]
	if fi.Valid() {
		fdSyms = ldr.Funcdata(s, fdSyms)
		if fi.NumInlTree() > 0 {
			if len(fdSyms) < abi.FUNCDATA_InlTree+1 {
				fdSyms = append(fdSyms, make([]loader.Sym, abi.FUNCDATA_InlTree+1-len(fdSyms))...)

// File Header.
type FileHeader32 struct {
	Fmagic   uint16 // Target machine
	Fnscns   uint16 // Number of sections
	Ftimedat uint32 // Time and date of file creation
	Fsymptr  uint32 // Byte offset to symbol table start
	Fnsyms   uint32 // Number of entries in symbol table
	Fopthdr  uint16 // Number of bytes in optional header
	Fflags   uint16 // Flags
}

type FileHeader64 struct {
	Fmagic   uint16 // Target machine

		}
		nscns = fhdr.Fnscns
		symptr = uint64(fhdr.Fsymptr)
		nsyms = fhdr.Fnsyms
		opthdr = fhdr.Fopthdr
		hdrsz = FILHSZ_32
	case U64_TOCMAGIC:
		fhdr := new(FileHeader64)
		if err := binary.Read(sr, binary.BigEndian, fhdr); err != nil {
			return nil, err
		}
		nscns = fhdr.Fnscns
		symptr = fhdr.Fsymptr
		nsyms = fhdr.Fnsyms
		opthdr = fhdr.Fopthdr
		hdrsz = FILHSZ_64
	}

	Fnscns   uint16 // Number of sections
	Ftimedat int32  // Time and date of file creation
	Fsymptr  uint64 // Byte offset to symbol table start
	Fopthdr  uint16 // Number of bytes in optional header
	Fflags   uint16 // Flags
	Fnsyms   int32  // Number of entries in symbol table
}

const (
	U64_TOCMAGIC = 0767 // AIX 64-bit XCOFF
)

// Flags that describe the type of the object file.
const (
	F_RELFLG    = 0x0001
	F_EXEC      = 0x0002