mouse.asm

来自「是经典的UNIX的部分源代码」· 汇编 代码 · 共 22 行

[BITS 32]

[GLOBAL mouse_asm_handle_for_mouse_interrupt]
[EXTERN mouse_handle_for_mouse_interrupt]

[SECTION .text]

mouse_asm_handle_for_mouse_interrupt:
  pushad
  pushf
  
  call              mouse_handle_for_mouse_interrupt
  
  ;;告诉硬件,中断处理完毕,即发送 EOI 消息
  mov               al , 0x20
  out               0x20 , al 
  out               0xa0 , al
  
  popf
  popad                                                     ;;必须在此处 popad，因为前面发 eoi 消息时修改了 al 的值
  
  iret