[SOLVED] CS #ifndef THREADS_IO_H

#ifndef THREADS_IO_H
#define THREADS_IO_H

#include
#include

/* Reads and returns a byte from PORT. */
static inline uint8_t
inb(uint16_t port) {
/* See [IA32-v2a] IN. */
uint8_t data;
asm volatile (inb %w1, %b0 : =a (data) : Nd (port));
return data;
}

/* Reads CNT bytes from PORT, one after another, and stores them
into the buffer starting at ADDR. */
static inline void
insb(uint16_t port, void *addr, size_t cnt) {
/* See [IA32-v2a] INS. */
asm volatile (rep insb : +D (addr), +c (cnt) : d (port) : memory);
}

/* Reads and returns 16 bits from PORT. */
static inline uint16_t
inw(uint16_t port) {
uint16_t data;
/* See [IA32-v2a] IN. */
asm volatile (inw %w1, %w0 : =a (data) : Nd (port));
return data;
}

/* Reads CNT 16-bit (halfword) units from PORT, one after
another, and stores them into the buffer starting at ADDR. */
static inline void
insw(uint16_t port, void *addr, size_t cnt) {
/* See [IA32-v2a] INS. */
asm volatile (rep insw : +D (addr), +c (cnt) : d (port) : memory);
}

/* Reads and returns 32 bits from PORT. */
static inline uint32_t
inl(uint16_t port) {
/* See [IA32-v2a] IN. */
uint32_t data;
asm volatile (inl %w1, %0 : =a (data) : Nd (port));
return data;
}

/* Reads CNT 32-bit (word) units from PORT, one after another,
and stores them into the buffer starting at ADDR. */
static inline void
insl(uint16_t port, void *addr, size_t cnt) {
/* See [IA32-v2a] INS. */
asm volatile (rep insl : +D (addr), +c (cnt) : d (port) : memory);
}

/* Writes byte DATA to PORT. */
static inline void
outb(uint16_t port, uint8_t data) {
/* See [IA32-v2b] OUT. */
asm volatile (outb %b0, %w1 : : a (data), Nd (port));
}

/* Writes to PORT each byte of data in the CNT-byte buffer
starting at ADDR. */
static inline void
outsb(uint16_t port, const void *addr, size_t cnt) {
/* See [IA32-v2b] OUTS. */
asm volatile (rep outsb : +S (addr), +c (cnt) : d (port));
}

/* Writes the 16-bit DATA to PORT. */
static inline void
outw(uint16_t port, uint16_t data) {
/* See [IA32-v2b] OUT. */
asm volatile (outw %w0, %w1 : : a (data), Nd (port));
}

/* Writes to PORT each 16-bit unit (halfword) of data in the
CNT-halfword buffer starting at ADDR. */
static inline void
outsw(uint16_t port, const void *addr, size_t cnt) {
/* See [IA32-v2b] OUTS. */
asm volatile (rep outsw : +S (addr), +c (cnt) : d (port));
}

/* Writes the 32-bit DATA to PORT. */
static inline void
outl(uint16_t port, uint32_t data) {
/* See [IA32-v2b] OUT. */
asm volatile (outl %0, %w1 : : a (data), Nd (port));
}

/* Writes to PORT each 32-bit unit (word) of data in the CNT-word
buffer starting at ADDR. */
static inline void
outsl(uint16_t port, const void *addr, size_t cnt) {
/* See [IA32-v2b] OUTS. */
asm volatile (rep outsl : +S (addr), +c (cnt) : d (port));
}

#endif /* threads/io.h */