tplt := int32(rel.Size())
			ctxt.loader.SetPlt(targ, tplt)

			if su == nil {
				su = ctxt.loader.MakeSymbolUpdater(s)
			}
			r.SetSym(rel.Sym())
			r.SetAdd(int64(tplt))

			// jmp *addr
			switch ctxt.Arch.Family {
			default:
				return fmt.Errorf("internal error in windynrelocsym: unsupported arch %v", ctxt.Arch.Family)
			case sys.I386:
				rel.AddUint8(0xff)

)

// EscapeCommFunction constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-escapecommfunction.
const (
	SETXOFF  = 1
	SETXON   = 2
	SETRTS   = 3
	CLRRTS   = 4
	SETDTR   = 5
	CLRDTR   = 6
	SETBREAK = 8
	CLRBREAK = 9
)

// PurgeComm constants. See https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-purgecomm.
const (
	PURGE_TXABORT = 0x0001