32 lines
702 B
C
32 lines
702 B
C
#include <stdint.h>
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uint8_t port_byte_in(uint16_t port) {
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uint8_t result;
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asm("in %%dx, %%al":"=a"(result):"d"(port));
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return result;
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}
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void port_byte_out(uint16_t port,uint8_t data) {
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asm("out %%al, %%dx":: "a"(data),"d"(port));
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}
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uint16_t port_word_in(uint16_t port) {
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uint16_t result;
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asm("in %%dx, %%ax":"=a"(result):"d"(port));
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return result;
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}
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void port_word_out(uint16_t port,uint16_t data) {
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asm("out %%ax, %%dx":: "a" (data), "d" (port));
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}
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uint32_t port_long_in(uint16_t port) {
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uint32_t result;
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asm("inl %%dx, %%eax":"=a"(result):"d"(port));
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return result;
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}
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void port_long_out(uint16_t port,uint32_t data) {
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asm("outl %%eax, %%dx":: "a" (data), "d" (port));
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}
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