//
//go:nosplit
func write1(fd uintptr, buf unsafe.Pointer, n int32) int32 {
	const (
		_STD_OUTPUT_HANDLE = ^uintptr(10) // -11
		_STD_ERROR_HANDLE  = ^uintptr(11) // -12
	)
	var handle uintptr
	switch fd {
	case 1:
		handle = stdcall1(_GetStdHandle, _STD_OUTPUT_HANDLE)
	case 2:
		handle = stdcall1(_GetStdHandle, _STD_ERROR_HANDLE)
	default:
		// assume fd is real windows handle.
		handle = fd
	}

while(<>) {
	chomp;
	s/\s+/ /g;
	s/^\s+//;
	s/\s+$//;
	my $nonblock = /^\/\/sysnb /;
	next if !/^\/\/sys / && !$nonblock;

	# Line must be of the form
	#	func Open(path string, mode int, perm int) (fd int, errno error)
	# Split into name, in params, out params.
	if(!/^\/\/sys(nb)? (\w+)\(([^()]*)\)\s*(?:\(([^()]+)\))?\s*(?:=\s*((?i)_?SYS_[A-Z0-9_]+))?$/) {
		print STDERR "$ARGV:$.: malformed //sys declaration\n";

				if err != nil {
					return written, err
				}
				nw = int64(n)
			}

			// Disable O_DIRECT on fd's on unaligned buffer
			// perform an amortized Fdatasync(fd) on the fd at
			// the end, this is performed by the caller before
			// closing 'w'.
			if err = disk.DisableDirectIO(file); err != nil {
				return written, err
			}

	// but in line with the uploader, log to a file in debug
	// only if that directory was created by the user.
	fd, err := os.Stat(telemetry.Default.DebugDir())
	if err != nil {
		if !os.IsNotExist(err) {
			log.Fatalf("failed to stat debug directory: %v", err)
		}
	} else if fd.IsDir() {
		// local/debug exists and is a directory. Set stderr to a log file path
		// in local/debug.

00000280  cd f4 05 84 db 8b 0b 22  e3 50 1b e7 6d 02 42 01  |.......".P..m.B.|
00000290  fd 1e bc 64 8b 01 3f a0  f8 8b 41 be 4d 97 07 6c  |...d..?...A.M..l|
000002a0  3b 09 74 d6 00 76 b3 a0  c0 d0 92 d0 78 24 d7 b2  |;.t..v......x$..|
000002b0  1f c0 86 90 59 3a fb a8  e1 f6 80 23 db f7 90 93  |....Y:.....#....|
000002c0  95 fd 37 14 8c 34 f3 07  10 f8 dd e3 66 28 1c b2  |..7..4......f(..|

// back from uintptr to pointer.
//
// If a pointer argument must be converted to uintptr for use as an argument,
// that conversion must appear in the call expression itself:
//
//	syscall.Syscall(SYS_READ, uintptr(fd), uintptr(unsafe.Pointer(p)), uintptr(n))
//
// The compiler handles a Pointer converted to a uintptr in the argument list of
// a call to a function implemented in assembly by arranging that the referenced

	if err != nil {
		return err
	}

	linkp := syscall.StringToUTF16(link)
	fd, err := syscall.CreateFile(&linkp[0], syscall.GENERIC_WRITE, 0, nil, syscall.OPEN_EXISTING,
		syscall.FILE_FLAG_OPEN_REPARSE_POINT|syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
	if err != nil {
		return err
	}
	defer syscall.CloseHandle(fd)

	buflen := uint32(rdb.header.ReparseDataLength) + uint32(unsafe.Sizeof(rdb.header))

			want = append(want, gcEv)
		}
		if runtime.GOOS != "windows" && runtime.GOOS != "plan9" {
			want = append(want, []evDesc{
				{trace.EventStateTransition, "Goroutine Running->Waiting", []frame{
					{"internal/poll.(*FD).Accept", 0},
					{"net.(*netFD).accept", 0},
					{"net.(*TCPListener).accept", 0},
					{"net.(*TCPListener).Accept", 0},
					{"main.main.func10", 0},
				}},

	_         [8]uint8
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint32
	Fname  [6]uint8
	Fpack  [6]uint8
}

type EpollEvent struct {
	Events uint32
	_      int32
	Fd     int32
	Pad    int32
}

const (
	OPEN_TREE_CLOEXEC = 0x80000
)

const (
	POLLRDHUP = 0x2000
)

type Sigset_t struct {
	Val [32]uint32
}

const _C__NSIG = 0x41

}

type Ustat_t struct {
	Tfree  int32
	Tinode uint64
	Fname  [6]uint8
	Fpack  [6]uint8
	_      [4]byte
}

type EpollEvent struct {
	Events uint32
	_      int32
	Fd     int32
	Pad    int32
}

const (
	OPEN_TREE_CLOEXEC = 0x80000
)

const (
	POLLRDHUP = 0x2000
)

type Sigset_t struct {
	Val [16]uint64
}

const _C__NSIG = 0x41