unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

//使用汇编的函数
function add(x,y: Integer): Integer;
var
  count: Integer;
begin
  asm
    MOV EAX,x      {把 x 值放入寄存器 EAX}
    MOV ECX,y      {把 y 值放入寄存器 ECX}
    ADD EAX,ECX    {把 EAX + ECX 的值放入 EAX}
    MOV count,EAX  {把 EAX 的值给变量 count}
  end;
  Result := count; {返回值}

{asm 中每个语句换行即可分句, 无须 ; 在这里加上也没有问题}
end;


//测试
procedure TForm1.Button1Click(Sender: TObject);
var
  i: Integer;
begin
  i := add(2,4);
  ShowMessage(IntToStr(i)); {6}
end;

end.