ata_disk_handler

kernel/common/glib.h

@@ -279,6 +279,20 @@ void io_out32(unsigned short port, unsigned int value)
                          : "memory");
 }
 
+/**
+ * @brief 从端口读入n个word到buffer
+ * 
+ */
+#define io_insw(port,buffer,nr)	\
+__asm__ __volatile__("cld;rep;insw;mfence;"::"d"(port),"D"(buffer),"c"(nr):"memory")
+
+/**
+ * @brief 从输出buffer中的n个word到端口
+ * 
+ */
+#define io_outsw(port,buffer,nr)	\
+__asm__ __volatile__("cld;rep;outsw;mfence;"::"d"(port),"S"(buffer),"c"(nr):"memory")
+
 /**
  * @brief 读取rsp寄存器的值（存储了页目录的基地址）
  *