是否有可能使大会自定义中断？ [英] Is it possible to make a custom Interrupt in Assembly?

问题描述

在汇编语言中，我们有DOS中断INT 21H，这不是一个硬件中断。

In Assembly Language we have the DOS interrupt INT 21h, which is not a hardware interrupt.

我想知道是否有可能写我自己的中断并调用它。

I was wondering if it was possible to write my own interrupt and call it.

如果可能的话，请建议链接或方法。

If possible, please suggest links or methods.

推荐答案

是的，你可以创建自己的interrput处理程序，并调用它，只要你想。
您将需要设置中断向量（它开始于0000地址：0000）。指向你自己的中断处理程序

Yes, you can create your own interrput handler and call it whenever you want. You will need to set up the interrupt vector (which starts at address 0000:0000) to point to your own interrupt handler.

指针到每个处理器占用4个字节（偏移和段），所以如果比如你要设置你的INT 22H中断处理程序，你会在位置0000更新interrput载体：0088H指向你的处理程序

The pointer to each handler consumes 4 bytes (offset and segment) so if for example you want to setup your interrupt handler for INT 22h you would update the interrput vector at location 0000:0088h to point to your handler.

Brown的中断列表检查未使用的中断号（至少一个不使用硬件interrput ）。

Check Ralph Brown's interrupt list to check an unused interrupt number (at least one that is not used by a hardware interrput).

下面去的如何设置中断22小时的处理程序的例子：

Here goes an example of how to set up a handler for interrupt 22h:

INITIALIZE: 
      XOR AX,AX
      MOV ES,AX
      CLI ; Disable interrupts, might not be needed if seting up a software-only interrupt
      MOV WORD PTR ES:[136], OFFSET INT22  ; setups offset of handler 22h
      MOV WORD PTR ES:[138], CS            ; Here I'm assuming segment of handler is current CS
      STI ; Reenable interrupts
      ; End of setup


INT22  PROC FAR
       ; Here goes the body of your handler
       IRET
INT22  ENDP

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