path: root/pmint.c

#include <yotk32.h>

typedef struct registers
{
    long ds;
    long edi, esi, ebp, esp, ebx, edx, ecx, eax;
    long int_no, err_code;
    long eip, cs, eflags, useresp, ss;
} registers_t; 


void int_isr_handler(registers_t regs){
    chv_putchar(regs.int_no);
    chv_sync_cursor();
}

void timer_sleep_msg(void){
    static int count = 0;
    count++;
    if(count % 100 == 0){
        putstr("...");
        putint(count / 100);
        chv_sync_cursor();
    }
}

void int_irq_handler(registers_t regs){
    asm(".intel_syntax noprefix\n");

    if(regs.int_no > 31 + 8){  /* Send reset signal to slave PIC (PIC2) */
        asm volatile(
            "mov dx, 0xA0\n"
            "mov al, 0x20\n"
            "out dx, al");
    }

    /* Send reset signal to master PIC (PIC1) */
    asm volatile(
        "mov dx, 0x20\n"
        "mov al, 0x20\n"
        "out dx, al");

    if(regs.int_no == 32){ /* IRQ0 == Timer */
        timer_sleep_msg();
    }
}