if addr.Sym != nil {
		return addr.Sym.Name
	}
	return "<erroneous symbol>"
}

var emptyProg obj.Prog

// getConstantPseudo checks that addr represents a plain constant and returns its value.
func (p *Parser) getConstantPseudo(pseudo string, addr *obj.Addr) int64 {
	if addr.Type != obj.TYPE_MEM || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {