VirtualFree := kernel32.NewProc("VirtualFree")
	const (
		MEM_COMMIT     = 0x00001000
		MEM_RESERVE    = 0x00002000
		MEM_RELEASE    = 0x8000
		PAGE_READWRITE = 0x04
	)
	mem, _, err := syscall.Syscall6(VirtualAlloc.Addr(), 4, 0, 1<<20, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE, 0, 0)
	if err != 0 {
		t.Fatalf("VirtualAlloc failed: %v", err)
	}
	defer syscall.Syscall(VirtualFree.Addr(), 3, mem, 1<<20, MEM_RELEASE)

	MEM_WRITE_WATCH = 0x00200000
	MEM_PHYSICAL    = 0x00400000
	MEM_RESET_UNDO  = 0x01000000
	MEM_LARGE_PAGES = 0x20000000

	PAGE_NOACCESS          = 0x00000001
	PAGE_READONLY          = 0x00000002
	PAGE_READWRITE         = 0x00000004
	PAGE_WRITECOPY         = 0x00000008
	PAGE_EXECUTE           = 0x00000010
	PAGE_EXECUTE_READ      = 0x00000020
	PAGE_EXECUTE_READWRITE = 0x00000040
	PAGE_EXECUTE_WRITECOPY = 0x00000080

	// https://learn.microsoft.com/en-us/windows/win32/memory/creating-a-file-mapping-object#file-mapping-size
	h, err := windows.CreateFileMapping(windows.Handle(f.Fd()), nil, syscall.PAGE_READWRITE, 0, 0, nil)
	if err != nil {
		return Data{}, fmt.Errorf("CreateFileMapping %s: %w", f.Name(), err)
	}
	// the mapping extends from zero to the end of the file mapping

	if err != nil {
		Exitf("resize output file failed: %v", err)
	}

	low, high := uint32(filesize), uint32(filesize>>32)
	fmap, err := syscall.CreateFileMapping(syscall.Handle(out.f.Fd()), nil, syscall.PAGE_READWRITE, high, low, nil)
	if err != nil {
		return err
	}
	defer syscall.CloseHandle(fmap)

	ptr, err := syscall.MapViewOfFile(fmap, syscall.FILE_MAP_READ|syscall.FILE_MAP_WRITE, 0, 0, uintptr(filesize))
	if err != nil {

		}
	}()

	// Create a file mapping object. The object itself is not shared.
	mapObj, err := syscall.CreateFileMapping(
		syscall.Handle(f.Fd()), // fhandle
		nil,                    // sa
		syscall.PAGE_READWRITE, // prot
		0,                      // maxSizeHigh
		0,                      // maxSizeLow
		nil,                    // name
	)
	if err != nil {
		return nil, err
	}

	CREATE_UNICODE_ENVIRONMENT = 0x00000400

	PROCESS_TERMINATE         = 1
	PROCESS_QUERY_INFORMATION = 0x00000400
	SYNCHRONIZE               = 0x00100000

	PAGE_READONLY          = 0x02
	PAGE_READWRITE         = 0x04
	PAGE_WRITECOPY         = 0x08
	PAGE_EXECUTE_READ      = 0x20
	PAGE_EXECUTE_READWRITE = 0x40
	PAGE_EXECUTE_WRITECOPY = 0x80

	FILE_MAP_COPY    = 0x01
	FILE_MAP_WRITE   = 0x02

		{"PACKET_STATISTICS", Const, 0},
		{"PAGE_EXECUTE_READ", Const, 0},
		{"PAGE_EXECUTE_READWRITE", Const, 0},
		{"PAGE_EXECUTE_WRITECOPY", Const, 0},
		{"PAGE_READONLY", Const, 0},
		{"PAGE_READWRITE", Const, 0},
		{"PAGE_WRITECOPY", Const, 0},
		{"PARENB", Const, 0},
		{"PARMRK", Const, 0},
		{"PARODD", Const, 0},
		{"PENDIN", Const, 0},
		{"PFL_HIDDEN", Const, 2},

pkg syscall (windows-386), const PAGE_EXECUTE_READWRITE ideal-int
pkg syscall (windows-386), const PAGE_EXECUTE_WRITECOPY ideal-int
pkg syscall (windows-386), const PAGE_READONLY ideal-int
pkg syscall (windows-386), const PAGE_READWRITE ideal-int
pkg syscall (windows-386), const PAGE_WRITECOPY ideal-int
pkg syscall (windows-386), const PKCS_7_ASN_ENCODING ideal-int
pkg syscall (windows-386), const PROCESS_QUERY_INFORMATION ideal-int

pkg syscall (windows-386), const PAGE_EXECUTE_READWRITE = 64
pkg syscall (windows-386), const PAGE_EXECUTE_WRITECOPY = 128
pkg syscall (windows-386), const PAGE_READONLY = 2
pkg syscall (windows-386), const PAGE_READWRITE = 4
pkg syscall (windows-386), const PAGE_WRITECOPY = 8
pkg syscall (windows-386), const PKCS_7_ASN_ENCODING = 65536
pkg syscall (windows-386), const PROCESS_QUERY_INFORMATION = 1024