pcrel     uint8
	length    uint8
	extrn     uint8
	type_     uint8
	scattered uint8
	value     uint32
}

type ldMachoSymtab struct {
	symoff  uint32
	nsym    uint32
	stroff  uint32
	strsize uint32
	str     []byte
	sym     []ldMachoSym
}

type ldMachoSym struct {
	name    string
	type_   uint8
	sectnum uint8
	desc    uint16
	kind    int8
	value   uint64
	sym     loader.Sym

		Flag    uint32
	}

	// A SymtabCmd is a Mach-O symbol table command.
	SymtabCmd struct {
		Cmd     LoadCmd
		Len     uint32
		Symoff  uint32
		Nsyms   uint32
		Stroff  uint32
		Strsize uint32
	}

	// A DysymtabCmd is a Mach-O dynamic symbol table command.
	DysymtabCmd struct {
		Cmd            LoadCmd
		Len            uint32
		Ilocalsym      uint32
		Nlocalsym      uint32

			return &cost
		}
	case "validate":
		if len(args) >= 2 {
			format, isFormat := args[0].Value().(*cel.Format)
			if isFormat {
				strSize := actualSize(args[1])

				// Dont have access to underlying regex, estimate a long regexp
				regexSize := format.MaxRegexSize

				// Copied from CEL implementation for regex cost
				//

		case LoadCmdSymtab:
			var hdr SymtabCmd
			b := bytes.NewReader(cmddat)
			if err := binary.Read(b, bo, &hdr); err != nil {
				return nil, err
			}
			strtab, err := saferio.ReadDataAt(r, uint64(hdr.Strsize), int64(hdr.Stroff))
			if err != nil {
				return nil, err
			}
			var symsz int
			if f.Magic == Magic64 {
				symsz = 16
			} else {
				symsz = 12
			}

	loadsize := 4 * 4 * ndebug
	for i := range load {
		loadsize += 4 * (len(load[i].data) + 2)
	}
	if arch.PtrSize == 8 {
		loadsize += 18 * 4 * nseg
		loadsize += 20 * 4 * nsect
	} else {
		loadsize += 14 * 4 * nseg
		loadsize += 17 * 4 * nsect
	}

	if arch.PtrSize == 8 {
		out.Write32(MH_MAGIC_64)
	} else {
		out.Write32(MH_MAGIC)
	}
	out.Write32(machohdr.cpu)

		Magic:       ph.Magic,
		Bss:         ph.Bss,
		Entry:       uint64(ph.Entry),
		PtrSize:     4,
		LoadAddress: 0x1000,
		HdrSize:     4 * 8,
	}}

	if ph.Magic&Magic64 != 0 {
		if err := binary.Read(sr, binary.BigEndian, &f.Entry); err != nil {
			return nil, err
		}
		f.PtrSize = 8
		f.LoadAddress = 0x200000
		f.HdrSize += 8
	}

	var sects = []struct {
		name string
		size uint32
	}{

	return sb.setUintXX(arch, r, v, int64(arch.PtrSize))
}

func (sb *SymbolBuilder) SetUintptr(arch *sys.Arch, r int64, v uintptr) int64 {
	return sb.setUintXX(arch, r, uint64(v), int64(arch.PtrSize))
}

func (sb *SymbolBuilder) SetAddrPlus(arch *sys.Arch, off int64, tgt Sym, add int64) int64 {
	if sb.Type() == 0 {
		sb.SetType(sym.SDATA)
	}
	if off+int64(arch.PtrSize) > sb.size {
		sb.size = off + int64(arch.PtrSize)

			w = 1
		}
		s.stksize += w
		s.stksize = types.RoundUp(s.stksize, n.Type().Alignment())
		if n.Type().Alignment() > int64(types.RegSize) {
			s.stkalign = n.Type().Alignment()
		}
		if n.Type().HasPointers() {
			s.stkptrsize = s.stksize
			lastHasPtr = true
		} else {
			lastHasPtr = false
		}
		n.SetFrameOffset(-s.stksize)
		if mls != nil && mls.IsLeader(n) {

// CommonSize returns sizeof(Type) for a compilation target with a given ptrSize
func CommonSize(ptrSize int) int { return 4*ptrSize + 8 + 8 }

// StructFieldSize returns sizeof(StructField) for a compilation target with a given ptrSize
func StructFieldSize(ptrSize int) int { return 3 * ptrSize }

// UncommonSize returns sizeof(UncommonType).  This currently does not depend on ptrSize.

#include "textflag.h"

#ifdef GOARCH_386
#define PTRSIZE 4
#endif
#ifdef GOARCH_arm
#define PTRSIZE 4
#endif
#ifdef GOARCH_mips
#define PTRSIZE 4
#endif
#ifdef GOARCH_mipsle
#define PTRSIZE 4
#endif
#ifndef PTRSIZE
#define PTRSIZE 8
#endif

TEXT	internal∕abi·FuncPCTestFn(SB),NOSPLIT,$0-0
	RET

GLOBL	internal∕abi·FuncPCTestFnAddr(SB), NOPTR, $PTRSIZE