for _, s := range x.f.Sections {
		if s.Name == ".go.buildinfo" {
			return s.Addr, s.Size
		}
	}
	for _, p := range x.f.Progs {
		if p.Type == elf.PT_LOAD && p.Flags&(elf.PF_X|elf.PF_W) == elf.PF_W {
			return p.Vaddr, p.Memsz
		}
	}
	return 0, 0
}

// peExe is the PE (Windows Portable Executable) implementation of the exe interface.
type peExe struct {
	f *pe.File
}

	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
				}
			}
		}
	}
	return nil
}

// ProgramHeadersForMapping returns the program segment headers that overlap

	}

	base, err := elfexec.GetBase(&ef.FileHeader, ph, f.m.kernelOffset, f.m.start, f.m.limit, f.m.offset)
	if err != nil {
		return err
	}
	f.base = base
	f.isData = ph != nil && ph.Flags&elf.PF_X == 0
	return nil
}

func (f *file) Name() string {
	return f.name
}

func (f *file) ObjAddr(addr uint64) (uint64, error) {
	f.baseOnce.Do(func() { f.baseErr = f.computeBase(addr) })

	ph := newElfPhdr()
	ph.Type = elf.PT_LOAD
	if seg.Rwx&4 != 0 {
		ph.Flags |= elf.PF_R
	}
	if seg.Rwx&2 != 0 {
		ph.Flags |= elf.PF_W
	}
	if seg.Rwx&1 != 0 {
		ph.Flags |= elf.PF_X
	}
	ph.Vaddr = seg.Vaddr
	ph.Paddr = seg.Vaddr
	ph.Memsz = seg.Length
	ph.Off = seg.Fileoff
	ph.Filesz = seg.Filelen
	ph.Align = uint64(*FlagRound)

	return ph
}

// Prog.Flag
type ProgFlag uint32

const (
	PF_X        ProgFlag = 0x1        /* Executable. */
	PF_W        ProgFlag = 0x2        /* Writable. */
	PF_R        ProgFlag = 0x4        /* Readable. */
	PF_MASKOS   ProgFlag = 0x0ff00000 /* Operating system-specific. */
	PF_MASKPROC ProgFlag = 0xf0000000 /* Processor-specific. */
)

var pfStrings = []intName{
	{0x1, "PF_X"},
	{0x2, "PF_W"},
	{0x4, "PF_R"},
}

		{"NType", Type, 0},
		{"NewFile", Func, 0},
		{"OSABI", Type, 0},
		{"Open", Func, 0},
		{"PF_MASKOS", Const, 0},
		{"PF_MASKPROC", Const, 0},
		{"PF_R", Const, 0},
		{"PF_W", Const, 0},
		{"PF_X", Const, 0},
		{"PT_AARCH64_ARCHEXT", Const, 16},
		{"PT_AARCH64_UNWIND", Const, 16},
		{"PT_ARM_ARCHEXT", Const, 16},
		{"PT_ARM_EXIDX", Const, 16},
		{"PT_DYNAMIC", Const, 0},