40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
#include <stdint.h>
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uint8_t inportb(uint16_t port) {
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uint8_t data;
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asm volatile("inb %1, %0" : "=a"(data) : "dN"(port));
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return data;
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}
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void outportb(uint16_t port, uint8_t data) {
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asm volatile("outb %1, %0" : : "dN"(port), "a"(data));
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}
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uint16_t inportw(uint16_t port) {
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uint16_t data;
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asm volatile("inw %1, %0" : "=a"(data) : "dN"(port));
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return data;
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}
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void outportw(uint16_t port, uint16_t data) {
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asm volatile("outw %1, %0" : : "dN"(port), "a"(data));
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}
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uint32_t inportl(uint16_t port) {
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uint32_t data;
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asm volatile("inl %%dx, %%eax" : "=a"(data) : "dN"(port));
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return data;
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}
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void outportl(uint16_t port, uint32_t data) {
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asm volatile("outl %%eax, %%dx" : : "dN"(port), "a"(data));
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}
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void outportsw(uint16_t port, void *data, uint32_t size) {
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asm volatile("rep outsw" : "+S"(data), "+c"(size) : "d"(port));
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}
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void inportsw(uint16_t port, unsigned char *data, unsigned long size) {
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asm volatile("rep insw" : "+D"(data), "+c"(size) : "d"(port) : "memory");
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}
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