}

type RtMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Index   uint16
	Flags   int32
	Addrs   int32
	Pid     int32
	Seq     int32
	Errno   int32
	Use     int32
	Inits   uint32
	Rmx     RtMetrics
}

type RtMetrics struct {
	Locks    uint32
	Mtu      uint32
	Hopcount uint32
	Expire   int32
	Recvpipe uint32
	Sendpipe uint32
	Ssthresh uint32

type PtraceRegs386 struct {
	Ebx      int32
	Ecx      int32
	Edx      int32
	Esi      int32
	Edi      int32
	Ebp      int32
	Eax      int32
	Xds      int32
	Xes      int32
	Xfs      int32
	Xgs      int32
	Orig_eax int32
	Eip      int32
	Xcs      int32
	Eflags   int32
	Esp      int32
	Xss      int32
}

// PtraceGetRegs386 fetches the registers used by 386 binaries.

//go:noescape
func Loadint32(ptr *int32) int32

//go:noescape
func Loadint64(ptr *int64) int64

//go:noescape
func Xaddint32(ptr *int32, delta int32) int32

//go:noescape
func Xaddint64(ptr *int64, delta int64) int64

//go:noescape
func Xchgint32(ptr *int32, new int32) int32

//go:noescape

	"internal/runtime/atomic"
	"unsafe"
)

// read calls the read system call.
// It returns a non-negative number of bytes written or a negative errno value.
func read(fd int32, p unsafe.Pointer, n int32) int32

func closefd(fd int32) int32

func exit(code int32)
func usleep(usec uint32)

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

// write1 calls the write system call.

func pipe2(flags int32) (r, w int32, errno int32) {
	var p [2]int32
	_, e := sysvicall2Err(&libc_pipe2, uintptr(noescape(unsafe.Pointer(&p))), uintptr(flags))
	return p[0], p[1], int32(e)
}

//go:nosplit
func fcntl(fd, cmd, arg int32) (ret int32, errno int32) {
	r1, err := sysvicall3Err(&libc_fcntl, uintptr(fd), uintptr(cmd), uintptr(arg))
	return int32(r1), int32(err)
}

func osyield1()

//go:nosplit
func osyield_no_g() {

)

type PtraceLwpInfoStruct struct {
	Lwpid        int32
	Event        int32
	Flags        int32
	Sigmask      Sigset_t
	Siglist      Sigset_t
	Siginfo      __PtraceSiginfo
	Tdname       [20]int8
	Child_pid    int32
	Syscall_code uint32
	Syscall_narg uint32
}

type __Siginfo struct {
	Signo  int32
	Errno  int32
	Code   int32
	Pid    int32
	Uid    uint32
	Status int32
	Addr   *byte

	Msglen   uint16
	Version  uint8
	Type     uint8
	Hdrlen   uint16
	Index    uint16
	Tableid  uint16
	Priority uint8
	Mpls     uint8
	Addrs    int32
	Flags    int32
	Fmask    int32
	Pid      int32
	Seq      int32
	Errno    int32
	Inits    uint32
	Rmx      RtMetrics
}

type RtMetrics struct {
	Pksent   uint64
	Expire   int64
	Locks    uint32
	Mtu      uint32

}

//go:nosplit
func open(name *byte, mode, perm int32) int32 {
	r, _ := syscall3(&libc_open, uintptr(unsafe.Pointer(name)), uintptr(mode), uintptr(perm))
	return int32(r)
}

//go:nosplit
func closefd(fd int32) int32 {
	r, _ := syscall1(&libc_close, uintptr(fd))
	return int32(r)
}

//go:nosplit
func pipe() (r, w int32, errno int32) {
	var p [2]int32

	int64(6093522341581845358), // Int()

	int32(1652216515), // Int32()
	int32(1323786710), // Int32()
	int32(1684546306), // Int32()
	int32(1710678126), // Int32()
	int32(503104460),  // Int32()
	int32(88487615),   // Int32()
	int32(1073552320), // Int32()
	int32(965044529),  // Int32()
	int32(285184408),  // Int32()
	int32(394559696),  // Int32()
	int32(1421454622), // Int32()
	int32(955177040),  // Int32()

	Interface uint32
}

type Msghdr struct {
	Name       *byte
	Iov        *Iovec
	Control    *byte
	Flags      int32
	Namelen    int32
	Iovlen     int32
	Controllen int32
}

type Cmsghdr struct {
	Len   int32
	Level int32
	Type  int32
}

type Inet4Pktinfo struct {
	Addr    [4]byte /* in_addr */
	Ifindex uint32
}

type Inet6Pktinfo struct {