105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
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////////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: IoPort.cpp
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//
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// Note:
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//
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#include "hal.h"
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#if SINGULARITY
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///////////////////////////////////////////////////////////// I/O Port Access.
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//
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uint8 Class_Microsoft_Singularity_Io_IoPort::g_HalReadInt8(uint32 port)
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{
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__asm {
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mov eax,0;
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mov edx,port;
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in al,dx;
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}
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}
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uint16 Class_Microsoft_Singularity_Io_IoPort::g_HalReadInt16(uint32 port)
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{
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__asm {
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mov eax,0;
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mov edx,port;
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in ax,dx;
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}
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}
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uint32 Class_Microsoft_Singularity_Io_IoPort::g_HalReadInt32(uint32 port)
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{
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__asm {
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mov edx,port;
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in eax,dx;
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}
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}
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void Class_Microsoft_Singularity_Io_IoPort::g_HalWriteInt8(uint32 port,
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uint8 value)
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{
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__asm {
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mov edx,port;
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mov al,value;
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out dx,al;
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}
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}
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void Class_Microsoft_Singularity_Io_IoPort::g_HalWriteInt16(uint32 port,
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uint16 value)
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{
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__asm {
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mov edx,port;
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mov ax,value;
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out dx,ax;
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}
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}
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void Class_Microsoft_Singularity_Io_IoPort::g_HalWriteInt32(uint32 port,
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uint32 value)
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{
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__asm {
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mov edx,port;
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mov eax,value;
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out dx,eax;
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}
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}
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#if DO_UNSAFE_CODE_IN_IO
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void Class_Microsoft_Singularity_Io_IoPort::g_HalReadFifo16(uint32 port,
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uint16 *buffer,
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uint32 count)
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{
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__asm {
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mov edx,port;
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mov edi,buffer;
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mov ecx,count;
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rep insw;
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}
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}
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void Class_Microsoft_Singularity_Io_IoPort::g_HalWriteFifo16(uint32 port,
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uint16 *buffer,
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uint32 count)
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{
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__asm {
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mov edx,port;
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mov esi,buffer;
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mov ecx,count;
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rep outsw;
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}
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}
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#endif // DO_UNSAFE_CODE_IN_IO
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#endif // SINGULARITY_KERNEL
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//
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///////////////////////////////////////////////////////////////// End of File.
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