🆕 实现简单的读取键盘数据的功能

kernel/common/printk.c

@@ -360,7 +360,6 @@ static int vsprintf(char *buf, const char *fmt, va_list args)
                 precision = 3;
             str = write_float_point_num(str, va_arg(args, double), field_width, precision, flags);
 
-            
             break;
 
         //对于不识别的控制符，直接输出
@@ -407,7 +406,6 @@ static char *write_num(char *str, ull num, int base, int field_width, int precis
     // 设置填充元素
     pad = (flags & PAD_ZERO) ? '0' : ' ';
 
-
     sign = 0;
     if (flags & SIGN && num < 0)
     {

kernel/exception/irq.c

@@ -126,6 +126,20 @@ void init_irq()
  */
 void do_IRQ(ul rsp, ul number)
 {
+    unsigned char x;
+    switch (number)
+    {
+    case 0x20:  // 时钟中断信号
+        
+        break;
+    case 0x21:  // 键盘中断
+        
+        x = io_in8(0x60);
+        printk_color(ORANGE, BLACK, "Received key irq, key code:%#018lx\n", x);
+        break;
+    default:
+        break;
+    }
     if(number!=0x20)
     printk_color(ORANGE, BLACK, "Received irq:%#018x\n", number);
 

kernel/main.c

@@ -116,7 +116,6 @@ void Start_Kernel(void)
     test_mm();
 
     //test_printk();
-
     //int t = 1 / 0; // 测试异常处理模块能否正常工作 触发除法错误
     // int t = *(int *)0xffff80000aa00000; // 触发页故障