{ELFOSABI_LINUX, "ELFOSABI_LINUX"},
	{ET_EXEC, "ET_EXEC"},
	{EM_860, "EM_860"},
	{SHN_LOPROC, "SHN_LOPROC"},
	{SHT_PROGBITS, "SHT_PROGBITS"},
	{SHF_MERGE + SHF_TLS, "SHF_MERGE+SHF_TLS"},
	{PT_LOAD, "PT_LOAD"},
	{PF_W + PF_R + 0x50, "PF_W+PF_R+0x50"},
	{DT_SYMBOLIC, "DT_SYMBOLIC"},
	{DF_BIND_NOW, "DF_BIND_NOW"},
	{DF_1_PIE, "DF_1_PIE"},
	{NT_FPREGSET, "NT_FPREGSET"},
	{STB_GLOBAL, "STB_GLOBAL"},

			{Type: PT_LOAD, Flags: PF_X + PF_R, Off: 0x1000, Vaddr: 0x400000, Paddr: 0x0, Filesz: 0x0, Memsz: 0x1000, Align: 0x1000},
			{Type: PT_LOAD, Flags: PF_R, Off: 0x1000, Vaddr: 0x401000, Paddr: 0x0, Filesz: 0x1000, Memsz: 0x1000, Align: 0x1000},
			{Type: PT_LOAD, Flags: PF_W + PF_R, Off: 0x2000, Vaddr: 0x402000, Paddr: 0x0, Filesz: 0x1000, Memsz: 0x1000, Align: 0x1000},

				for _, s := range ef.Sections {
					if s.Flags&elf.SHF_ALLOC == 0 {
						ret += s.Size
					}
				}
				// also skip gaps between PT_LOAD segments
				var prev *elf.Prog
				for _, seg := range ef.Progs {
					if seg.Type != elf.PT_LOAD {
						continue
					}
					if prev != nil {
						ret += seg.Off - prev.Off - prev.Filesz
					}
					prev = seg
				}
				return ret
			}

		}
		return "ppc64"
	case elf.EM_S390:
		return "s390x"
	}
	return ""
}

func (f *elfFile) loadAddress() (uint64, error) {
	for _, p := range f.elf.Progs {
		if p.Type == elf.PT_LOAD && p.Flags&elf.PF_X != 0 {
			// The memory mapping that contains the segment
			// starts at an aligned address. Apparently this
			// is what pprof expects, as it uses this and the

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
				}
			}
		}
	}
	return nil
}

		}
	}
}

// Is a given offset into the file contained in a loaded segment?
func isOffsetLoaded(f *elf.File, offset uint64) bool {
	for _, prog := range f.Progs {
		if prog.Type == elf.PT_LOAD {
			if prog.Off <= offset && offset < prog.Off+prog.Filesz {
				return true
			}
		}
	}
	return false
}

func rnd(v int32, r int32) int32 {
	if r <= 0 {
		return v
	}
	v += r - 1

func elf64phdr(out *OutBuf, e *ElfPhdr) {
	if e.Type == elf.PT_LOAD {
		fixElfPhdr(e)
	}

	out.Write32(uint32(e.Type))
	out.Write32(uint32(e.Flags))
	out.Write64(e.Off)
	out.Write64(e.Vaddr)
	out.Write64(e.Paddr)
	out.Write64(e.Filesz)
	out.Write64(e.Memsz)
	out.Write64(e.Align)
}

func elf32phdr(out *OutBuf, e *ElfPhdr) {
	if e.Type == elf.PT_LOAD {
		fixElfPhdr(e)
	}

}

func (x *elfExe) DataStart() (uint64, uint64) {
	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 {

		return elfexec.FindTextProgHeader(ef), nil
	}

	// Fetch all the loadable segments.
	var phdrs []elf.ProgHeader
	for i := range ef.Progs {
		if ef.Progs[i].Type == elf.PT_LOAD {
			phdrs = append(phdrs, ef.Progs[i].ProgHeader)
		}
	}
	// Some ELF files don't contain any loadable program segments, e.g. .ko
	// kernel modules. It's not an error to have no header in such cases.

func (i CompressionType) GoString() string { return stringName(uint32(i), compressionStrings, true) }

// Prog.Type
type ProgType int

const (
	PT_NULL    ProgType = 0 /* Unused entry. */
	PT_LOAD    ProgType = 1 /* Loadable segment. */
	PT_DYNAMIC ProgType = 2 /* Dynamic linking information segment. */
	PT_INTERP  ProgType = 3 /* Pathname of interpreter. */
	PT_NOTE    ProgType = 4 /* Auxiliary information. */