for _, s := range f.Sections {
		if s.Offset == 0 {
			continue
		}
		// We are using distance between s.VirtualAddress and idd.VirtualAddress
		// to avoid potential overflow of uint32 caused by addition of s.VirtualSize
		// to s.VirtualAddress.
		if s.VirtualAddress <= idd.VirtualAddress && idd.VirtualAddress-s.VirtualAddress < s.VirtualSize {
			ds = s
			break
		}
	}

	"fmt"
	"internal/saferio"
	"io"
	"strconv"
)

// SectionHeader32 represents real PE COFF section header.
type SectionHeader32 struct {
	Name                 [8]uint8
	VirtualSize          uint32
	VirtualAddress       uint32
	SizeOfRawData        uint32
	PointerToRawData     uint32
	PointerToRelocations uint32
	PointerToLineNumbers uint32
	NumberOfRelocations  uint16
	NumberOfLineNumbers  uint16

// and file offset provided in segment seg.
func (sect *peSection) checkSegment(seg *sym.Segment) {
	if seg.Vaddr-uint64(PEBASE) != uint64(sect.virtualAddress) {
		Errorf(nil, "%s.VirtualAddress = %#x, want %#x", sect.name, uint64(int64(sect.virtualAddress)), uint64(int64(seg.Vaddr-uint64(PEBASE))))
		errorexit()
	}
	if seg.Fileoff != uint64(sect.pointerToRawData) {

				return nil, fmt.Errorf("invalid section number in symbol table")
			}
			sect := f.xcoff.Sections[s.SectionNumber-1]

			// debug/xcoff returns an offset in the section not the actual address
			sym.Addr += sect.VirtualAddress

			if s.AuxCSect.SymbolType&0x3 == xcoff.XTY_LD {
				// The size of a function is contained in the
				// AUX_FCN entry
				sym.Size = s.AuxFcn.Size
			} else {
				sym.Size = s.AuxCSect.Length
			}

	addr -= x.imageBase()
	for _, sect := range x.f.Sections {
		if uint64(sect.VirtualAddress) <= addr && addr <= uint64(sect.VirtualAddress+sect.Size-1) {
			n := uint64(sect.VirtualAddress+sect.Size) - addr
			if n > size {
				n = size
			}
			return saferio.ReadDataAt(sect, n, int64(addr-uint64(sect.VirtualAddress)))
		}
	}
	return nil, errUnrecognizedFormat
}

	"errors"
	"fmt"
	"internal/saferio"
	"io"
	"os"
	"strings"
)

// SectionHeader holds information about an XCOFF section header.
type SectionHeader struct {
	Name           string
	VirtualAddress uint64
	Size           uint64
	Type           uint32
	Relptr         uint64
	Nreloc         uint32
}

type Section struct {
	SectionHeader
	Relocs []Reloc
	io.ReaderAt
	sr *io.SectionReader
}

		for _, rx := range sect.Relocs {
			rSym := l.LookupOrCreateCgoExport(rx.Symbol.Name, 0)
			if uint64(int32(rx.VirtualAddress)) != rx.VirtualAddress {
				return errorf("virtual address of a relocation is too big: 0x%x", rx.VirtualAddress)
			}
			rOff := int32(rx.VirtualAddress)
			var rSize uint8
			var rType objabi.RelocType
			var rAdd int64
			switch rx.Type {
			default:

			case ch&data != 0:
				if ch&permW == 0 {
					sym.Code = 'R'
				} else {
					sym.Code = 'D'
				}
			case ch&bss != 0:
				sym.Code = 'B'
			}
			sym.Addr += imageBase + uint64(sect.VirtualAddress)
		}
		syms = append(syms, sym)
		addrs = append(addrs, sym.Addr)
	}

	sort.Sort(uint64s(addrs))
	for i := range syms {
		j := sort.Search(len(addrs), func(x int) bool { return addrs[x] > syms[i].Addr })

	NumberOfSections     uint16
	TimeDateStamp        uint32
	PointerToSymbolTable uint32
	NumberOfSymbols      uint32
	SizeOfOptionalHeader uint16
	Characteristics      uint16
}

type DataDirectory struct {
	VirtualAddress uint32
	Size           uint32
}

type OptionalHeader32 struct {
	Magic                       uint16
	MajorLinkerVersion          uint8
	MinorLinkerVersion          uint8
	SizeOfCode                  uint32

pkg debug/pe, type File struct, StringTable StringTable
pkg debug/pe, type Reloc struct
pkg debug/pe, type Reloc struct, SymbolTableIndex uint32
pkg debug/pe, type Reloc struct, Type uint16
pkg debug/pe, type Reloc struct, VirtualAddress uint32
pkg debug/pe, type Section struct, Relocs []Reloc
pkg debug/pe, type StringTable []uint8
pkg encoding/base64, method (Encoding) Strict() *Encoding