void irq_handler(struct regs* r){
printf("irq %d handled", r->call_code);
if(r->call_code < 15 && handler[r->call_code])
{
handler[r->call_code](r);
}
PIC_sendEOI(r->call_code);
}
void interrupt_handler_timer(void){
//static int p=0;
// print_timer("Time");
timer_handler();
//printk("shashank_timer=%d",p);
// p++;
//timer_interrupt_1();
PIC_sendEOI(0x20);
}
void interrupt_handler_keyboard(void){
static int shift = 0;
uint8_t scancode;
uint8_t code;
scancode = inb(0x60);
switch(scancode)
{
case KBD_RIGHTSHIFT:
case KBD_LEFTSHIFT :
shift = 1;
break;
case KBD_RIGHTSHIFT_RELEASE:
case KBD_LEFTSHIFT_RELEASE :
shift = 0;
break;
default:
break;
}
code=scancode_to_char(scancode,shift);
if(code != 0)
{
printy("key pressed=%c ",code);
keycode=code;
//attaching scanf
if(start_buffer==1)
{
if(clean_buffer==1)
{ int i=0;
count=0;
for(i=0;i<512;i++)
{
buffer[i]='\0';
return_buffer[i]='\0';
}
clean_buffer=0;
}
if(code!='\n')
{
return_buffer[count]=code;
buffer[count++]=code;
//countb=count;
flag=1;
}
//printy("%c",code);
if(code=='\n')
{
buffer_complete=1;
}
}
}
PIC_sendEOI(0x20);
}
void do_kb_interupt()
{
char data;
PIC_sendEOI(1);
//outb(0x61, 0x20);
data = inb(KB_DATA);
fifo_put(kbFIFO, offset + data);
//draw_char(0xe0000000, 1024, 15, 0,0, data);
}
void isr_handler(registers_t* regs)
{
if(exception_depth++ >= 3){
printf("Exception depth exceeded 3");
while(1);
}
if((regs->int_no < 32) && (isFatal(regs->int_no))){
terminal_bluescreen();
char* name = interrupt_name(regs->int_no);
printf("\t\t\t\t\t\tSOMETHING JUST WENT VERY WRONG\n\nI'd like to");
printf(" interject for a moment. What you're referring to as:\n\n\t");
printf("Interrupt %d\n\nIs in fact, a fatal exception, ", (int) regs->int_no);
printf("or as I've recently taken to calling it:\n\n");
printf("\t%s with error code %p\n", name, (void *) regs->err_code);
//Halt the machine
while(1);
}
if(regs->int_no >= 32){
//Handle our IRQs
//interrupt numbers 0-31 are reserved by intel, so subtract 32
//to get the isa irq code. 32 is an arbitary number decided in the
//PIC initialization code
int isa_irq = (regs->int_no - 32);
switch(isa_irq){
case 0:
//Programmable interval timer interrupt
break;
case 1:
//Keyboard interrupt
handle_keyboard_interrupt();
break;
}
PIC_sendEOI(regs->int_no);
}else{
//It is an exception we can (and should) handle
switch(regs->int_no){
case 14:
handle_page_fault(regs->err_code);
break;
}
}
exception_depth = 0;
return;
}
void handle_irq_8(){
time ++;
outb(RTC_SELECT_PORT, RTC_REG_C);
inb(RTC_DATA_PORT);
PIC_sendEOI(0x08);
}
