43 lines
761 B
C
43 lines
761 B
C
#ifndef _SYS_IO_H
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#define _SYS_IO_H
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#include <inttypes.h>
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static inline uint8_t inb(uint16_t p)
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{
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uint8_t v;
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asm volatile ("inb %1,%0":"=a" (v):"Nd"(p));
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return v;
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}
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static inline uint16_t inw(uint16_t p)
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{
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uint16_t v;
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asm volatile ("inw %1,%0":"=a" (v):"Nd"(p));
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return v;
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}
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static inline uint32_t inl(uint16_t p)
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{
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uint32_t v;
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asm volatile ("inl %1,%0":"=a" (v):"Nd"(p));
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return v;
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}
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static inline void outb(uint8_t v, uint16_t p)
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{
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asm volatile ("outb %0,%1"::"a" (v), "Nd"(p));
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}
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static inline void outw(uint16_t v, uint16_t p)
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{
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asm volatile ("outw %0,%1"::"a" (v), "Nd"(p));
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}
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static inline void outl(uint32_t v, uint16_t p)
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{
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asm volatile ("outl %0,%1"::"a" (v), "Nd"(p));
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}
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#endif /* _SYS_IO_H */
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