#ifndef _IO_H #define _IO_H #include static inline void outb(uint16_t port, uint8_t val) { asm volatile("outb %0, %1" : : "a"(val), "Nd"(port)); } static inline void outw(uint16_t port, uint16_t val) { asm volatile("outw %0, %1" : : "a"(val), "Nd"(port)); } static inline void outl(uint16_t port, uint32_t val) { asm volatile("outl %0, %1" : : "a"(val), "Nd"(port)); } static inline uint8_t inb(uint16_t port) { uint8_t ret; asm volatile("inb %1, %0" : "=a"(ret) : "Nd"(port)); return ret; } static inline uint16_t inw(uint16_t port) { uint16_t ret; asm volatile("inw %1, %0" : "=a"(ret) : "Nd"(port)); return ret; } static inline uint32_t inl(uint16_t port) { uint32_t ret; asm volatile("inl %1, %0" : "=a"(ret) : "Nd"(port)); return ret; } static inline void io_wait() { asm volatile("outb %%al, $0x80" : : "a"(0)); } static inline void cli() { asm volatile("cli"); } static inline void sti() { asm volatile("sti"); } static inline uint64_t rdtsc() { uint64_t ret; asm volatile ( "rdtsc" : "=A"(ret) ); return ret; } #endif