christoph/lecture-operating-system-development
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implement exercise 04 interrupts

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This commit is contained in:
churl
2022-05-14 21:12:32 +02:00
parent deb0ebd8eb
commit 13df44fb6f
8 changed files with 208 additions and 120 deletions
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47
c_os/kernel/interrupts/IntDispatcher.cc
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@ -10,13 +10,11 @@
* *
* Autor: Michael Schoettner, 31.8.2016 *
*****************************************************************************/
#include "kernel/interrupts/IntDispatcher.h"
#include "kernel/CPU.h"
#include "kernel/Globals.h"
#include "kernel/interrupts/IntDispatcher.h"
extern "C" void int_disp (unsigned int slot);
extern "C" void int_disp(unsigned int slot);
/*****************************************************************************
* Prozedur: int_disp *
@ -30,26 +28,25 @@ extern "C" void int_disp (unsigned int slot);
* Parameter: *
* vector: Vektor-Nummer der Unterbrechung *
*****************************************************************************/
void int_disp (unsigned int vector) {
void int_disp(unsigned int vector) {
/* hier muss Code eingefuegt werden */
kout << "Ein Interrupt ist aufgetreten" << slot << endl;
// kout << "Ein Interrupt ist aufgetreten (vector: " << vector << ")" << endl;
intdis.report(vector);
}
/*****************************************************************************
* Konstruktor: IntDispatcher::IntDispatcher *
*---------------------------------------------------------------------------*
* Beschreibung: Initialisierung der ISR map mit einer Default-ISR. *
*****************************************************************************/
IntDispatcher::IntDispatcher () {
for (unsigned int slot=0; slot<size; slot++)
IntDispatcher::IntDispatcher() {
for (unsigned int slot = 0; slot < size; slot++) {
map[slot] = 0;
}
}
/*****************************************************************************
* Methode: IntDispatcher::assign *
*---------------------------------------------------------------------------*
@ -61,12 +58,20 @@ IntDispatcher::IntDispatcher () {
* *
* Rueckgabewert: 0 = Erfolg, -1 = Fehler *
*****************************************************************************/
int IntDispatcher::assign (unsigned int vector, ISR& isr) {
int IntDispatcher::assign(unsigned int vector, ISR& isr) {
/* hier muss Code eingefuegt werden */
}
if (vector >= this->size) {
kout << "Invalid vector number when assigning" << endl;
return -1;
}
this->map[vector] = &isr;
kout << "Registered ISR for vector " << dec << vector << endl;
return 0;
}
/*****************************************************************************
* Methode: IntDispatcher::report *
@ -78,8 +83,22 @@ int IntDispatcher::assign (unsigned int vector, ISR& isr) {
* *
* Rueckgabewert: 0 = ISR wurde aufgerufen, -1 = unbekannte Vektor-Nummer *
*****************************************************************************/
int IntDispatcher::report (unsigned int vector) {
int IntDispatcher::report(unsigned int vector) {
/* hier muss Code eingefuegt werden */
if (vector >= this->size) {
return -1;
}
ISR* isr = this->map[vector];
if (isr == 0) {
kout << "No ISR registered for vector " << vector << endl;
return -1;
}
isr->trigger();
return 0;
}