MoOS/port.cpp at master · Antricks/MoOS · GitHub

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#include"port.h"
#include"types.h"
#include"textio.h"
#include"gdt.h"

Port::Port() {
}

Port::Port(uint16_t portnumber) {
this->portnumber = portnumber;
}

Port::~Port() {
}


Port8::Port8() : Port() {}
Port8::Port8(uint16_t portnumber) : Port(portnumber) {}

Port8::~Port8() {
}

voidPort8::write(uint8_t data) {
__asm__volatile("outb %0, %1" : : "a" (data) , "Nd" (this->portnumber));
}

uint8_tPort8::read() {
uint8_t result;
__asm__volatile("inb %1, %0" : "=a" (result) : "Nd" (this->portnumber));
return result;
}


Port8Slow::Port8Slow() : Port8() {}
Port8Slow::Port8Slow(uint16_t portnumber) : Port8(portnumber) {}

Port8Slow::~Port8Slow() {

}

voidPort8Slow::write(uint8_t data) {
__asm__volatile("outb %0, %1\njmp 1f\njmp 1f\n1:" : : "a" (data) , "Nd" (this->portnumber));
}

Port16::Port16() : Port() {}
Port16::Port16(uint16_t portnumber) : Port(portnumber) {}

Port16::~Port16() {

}

voidPort16::write(uint16_t data) {
__asm__volatile("outw %0, %1" : : "a" (data), "Nd" (this->portnumber));
}

uint16_tPort16::read() {
uint16_t result;
__asm__volatile("inw %1, %0" : "=a" (result) : "Nd" (this->portnumber));
return result;
}

Port32::Port32() : Port() {}
Port32::Port32(uint16_t portnumber) : Port(portnumber) {}

Port32::~Port32() {

}

voidPort32::write(uint32_t data) {
__asm__volatile("outl %0, %1" : : "a" (data), "Nd" (this->portnumber));
}

uint32_tPort32::read() {
uint32_t result;
__asm__volatile("inl %1, %0" : "=a" (result) : "Nd" (this->portnumber));
return result;
}