mirror of https://github.com/tailix/kernel.git
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#ifndef KERNELMQ_INCLUDED_ASM
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#define KERNELMQ_INCLUDED_ASM 1
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inline static unsigned char inportb(unsigned short port);
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inline static unsigned short inportw(unsigned short port);
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inline static unsigned int inportd(unsigned short port);
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inline static void outportb(unsigned short port, unsigned char value);
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inline static void outportw(unsigned short port, unsigned short value);
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inline static void outportd(unsigned short port, unsigned int value);
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unsigned char inportb(unsigned short port)
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{
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register unsigned char result;
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asm volatile("inb %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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unsigned short inportw(unsigned short port)
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{
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register unsigned short result;
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asm volatile("inw %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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unsigned int inportd(unsigned short port)
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{
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register unsigned int result;
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asm volatile("ind %1, %0" : "=a" (result) : "dN" (port));
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return result;
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}
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void outportb(unsigned short port, unsigned char value)
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{
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asm volatile("outb %1, %0" : : "dN" (port), "a" (value));
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}
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void outportw(unsigned short port, unsigned short value)
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{
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asm volatile("outw %1, %0" : : "dN" (port), "a" (value));
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}
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void outportd(unsigned short port, unsigned int value)
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{
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asm volatile("outd %1, %0" : : "dN" (port), "a" (value));
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}
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#endif
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