Ino    uint64
	Off    int64
	Reclen uint16
	Type   uint8
	Name   [256]int8
	_      [5]byte
}

type Flock_t struct {
	Type   int16
	Whence int16
	Start  int64
	Len    int64
	Pid    int32
	_      int16
	_      [2]byte
}

type DmNameList struct {
	Dev  uint64
	Next uint32
	Name [0]byte
	_    [4]byte
}

const (
	FADV_DONTNEED = 0x4

type Dirent struct {
	Ino    uint64
	Off    int64
	Reclen uint16
	Type   uint8
	Name   [256]int8
	_      [5]byte
}

type Flock_t struct {
	Type   int16
	Whence int16
	Start  int64
	Len    int64
	Pid    int32
	_      [4]byte
}

type DmNameList struct {
	Dev  uint64
	Next uint32
	Name [0]byte
	_    [4]byte
}

const (
	FADV_DONTNEED = 0x4
	FADV_NOREUSE  = 0x5

	SYS_CONNECT              = 98  // { int|sys||connect(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_GETPRIORITY          = 100 // { int|sys||getpriority(int which, id_t who); }
	SYS_BIND                 = 104 // { int|sys||bind(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_SETSOCKOPT           = 105 // { int|sys||setsockopt(int s, int level, int name, const void *val, socklen_t valsize); }

	SYS_CONNECT              = 98  // { int|sys||connect(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_GETPRIORITY          = 100 // { int|sys||getpriority(int which, id_t who); }
	SYS_BIND                 = 104 // { int|sys||bind(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_SETSOCKOPT           = 105 // { int|sys||setsockopt(int s, int level, int name, const void *val, socklen_t valsize); }

		// details on this problem.
		if state.arch.Family == sys.I386 && name[0] == '_' && name != "_main" && !strings.HasPrefix(name, "__imp_") {
			name = name[1:] // _Name => Name
		}
	}

	// remove last @XXX
	if i := strings.LastIndex(name, "@"); i >= 0 {
		name = name[:i]
	}

	var s loader.Sym
	var bld *loader.SymbolBuilder

func splitUSTARPath(name string) (prefix, suffix string, ok bool) {
	length := len(name)
	if length <= nameSize || !isASCII(name) {
		return "", "", false
	} else if length > prefixSize+1 {
		length = prefixSize + 1
	} else if name[length-1] == '/' {
		length--
	}

	i := strings.LastIndex(name[:length], "/")
	nlen := len(name) - i - 1 // nlen is length of suffix

	SYS_CONNECT              = 98  // { int|sys||connect(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_GETPRIORITY          = 100 // { int|sys||getpriority(int which, id_t who); }
	SYS_BIND                 = 104 // { int|sys||bind(int s, const struct sockaddr *name, socklen_t namelen); }
	SYS_SETSOCKOPT           = 105 // { int|sys||setsockopt(int s, int level, int name, const void *val, socklen_t valsize); }

	Nodename   [65]int8
	Release    [65]int8
	Version    [65]int8
	Machine    [65]int8
	Domainname [65]int8
}

type Ustat_t struct {
	Tfree     int32
	Pad_cgo_0 [4]byte
	Tinode    uint64
	Fname     [6]int8
	Fpack     [6]int8
	Pad_cgo_1 [4]byte
}

type EpollEvent struct {
	Events uint32
	Fd     int32
	Pad    int32
}

const (
	_AT_FDCWD            = -0x64

	}
}

func opByName(arch arch, name string) opData {
	name = name[2:]
	for _, x := range genericOps {
		if name == x.name {
			return x
		}
	}
	if arch.name != "generic" {
		name = name[len(arch.name):]
		for _, x := range arch.ops {
			if name == x.name {
				return x
			}
		}
	}
	log.Fatalf("failed to find op named %s in arch %s", name, arch.name)
	panic("unreachable")
}

//	------------------+--------+-----------+----------
//	Name              |   256B | unlimited | unlimited
//	Linkname          |   100B | unlimited | unlimited
//	Size              | uint33 | unlimited |    uint89
//	Mode              | uint21 |    uint21 |    uint57
//	Uid/Gid           | uint21 | unlimited |    uint57
//	Uname/Gname       |    32B | unlimited |       32B
//	ModTime           | uint33 | unlimited |     int89