keyboard.asm

哈工大的几个人开发的操作系统pyos的部分源码

[BITS 32]
[GLOBAL pyos_asm_interrupt_handle_for_keyboard]
[EXTERN pyos_interrupt_handle_for_keyboard]
[SECTION .text]

pyos_asm_interrupt_handle_for_keyboard:
  ;保护现场
  pushad
  pushfd
  ;调用相应的C++处理函数
  call pyos_interrupt_handle_for_keyboard
  ;恢复现场 
  popfd 
  popad
  ;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
	;返回
  iret