Chloe M.
57 lines
1.0 KiB
C
57 lines
1.0 KiB
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause.
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*
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* Description: Port I/O helpers
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* Author: Chloe M.
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*/
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#ifndef _MACHINE_PIO_H_
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#define _MACHINE_PIO_H_ 1
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#include <stdef.h>
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ALWAYS_INLINE static inline UCHAR
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MdInb(USHORT Port)
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{
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UCHAR result;
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ASMV("in %%dx, %%al" : "=a" (result) : "d" (Port));
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return result;
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}
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ALWAYS_INLINE static inline USHORT
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MdInw(USHORT Port)
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{
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USHORT Val;
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ASMV("inw %w1, %w0" : "=a" (Val) : "Nd" (Port));
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return Val;
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}
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ALWAYS_INLINE static inline ULONG
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MdInl(USHORT Port)
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{
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ULONG Val;
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ASMV("inl %w1, %0" : "=a" (Val) : "Nd" (Port));
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return Val;
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}
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ALWAYS_INLINE static inline VOID
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MdOutb(USHORT Port, UCHAR Val)
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{
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ASMV("out %%al, %%dx" : :"a" (Val), "d" (Port));
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}
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ALWAYS_INLINE static inline VOID
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MdOutw(USHORT Port, USHORT Val)
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{
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ASMV("outw %w0, %w1" : : "a" (Val), "Nd" (Port));
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}
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ALWAYS_INLINE static inline VOID
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MdOutl(USHORT Port, ULONG Val)
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{
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ASMV("outl %0, %w1" : : "a" (Val), "Nd" (Port));
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}
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#endif /* !_MACHINE_PIO_H_ */
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