?? io.h
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#define outb(value,port) \__asm__ ("outb %%al,%%dx"::"a" (value),"d" (port))#define inb(port) ({ \unsigned char _v; \__asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \_v; \})#define outb_p(value,port) \__asm__ ("outb %%al,%%dx\n" \ "\tjmp 1f\n" \ "1:\tjmp 1f\n" \ "1:"::"a" (value),"d" (port))#define inb_p(port) ({ \unsigned char _v; \__asm__ volatile ("inb %%dx,%%al\n" \ "\tjmp 1f\n" \ "1:\tjmp 1f\n" \ "1:":"=a" (_v):"d" (port)); \_v; \})?? 快捷鍵說明
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