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Kernel: Use rep insw/outsw for IDE transfers.
There are much faster ways to do disk transfers, but I'm not implementing those today. In the meantime, this is slightly nicer. :^)
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37498c1566
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2 changed files with 17 additions and 15 deletions
11
Kernel/IO.h
11
Kernel/IO.h
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@ -25,6 +25,11 @@ inline dword in32(word port)
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return value;
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}
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inline void repeated_in16(word port, byte* buffer, int buffer_size)
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{
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asm volatile("rep insw" : "+D"(buffer), "+c"(buffer_size) : "d"(port) : "memory");
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}
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inline void out8(word port, byte value)
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{
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asm volatile("outb %0, %1"::"a"(value), "Nd"(port));
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@ -39,4 +44,10 @@ inline void out32(word port, dword value)
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{
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asm volatile("outl %0, %1"::"a"(value), "Nd"(port));
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}
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inline void repeated_out16(word port, const byte* data, int data_size)
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{
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asm volatile("rep outsw" : "+S"(data), "+c"(data_size) : "d"(port));
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}
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}
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